[Git][ghc/ghc][wip/mangoiv/ci-stages] 11 commits: Cmm: print unreachable blocks under -dppr-debug (#27368)
by Magnus (＠MangoIV) 10 Aug '26
by Magnus (＠MangoIV) 10 Aug '26
10 Aug '26
Magnus pushed to branch wip/mangoiv/ci-stages at Glasgow Haskell Compiler / GHC
Commits:
0779e12c by Simon Jakobi at 2026-08-07T12:36:11-04:00
Cmm: print unreachable blocks under -dppr-debug (#27368)
Unreachable blocks linger in a CmmGraph's block map for most of the Cmm
pipeline, but pprCmmGraph only ever printed the blocks reachable from the
entry, so dumps looked consistent while the graph was not. Issues like
#27368 were hard to debug due to this.
pprCmmGraph now appends the stored-but-unreachable blocks under a
"// unreachable blocks:" heading when -dppr-debug is on.
See Note [unreachable blocks] in GHC.Cmm.Pipeline.
Assisted-by: Claude Opus 5
- - - - -
3a0f9a51 by Simon Peyton Jones at 2026-08-07T12:36:54-04:00
Fix three bugs related to required type args and INLINE pragmas
* `GHC.Core.Opt.Arity.mkEtaForAllMCo` got the visibility flags back to front,
leading to a Lint error (#27557)
* The arity in an InlineSaturation is the VisArity not the Arity; the
two can differ when we have "required" type arguments. This made the
INLINE pragma argument counting go wrong in `makeCorePair` (#27590).
* When a simple binding has a type signature, we take special path in `tcPolyCheck`,
leading to an outer `AbsBinds` that has no dictionaries, even when the binding
is in fact overloaded. That confused the inline-arity computation in
`makeCorePair` (#27589).
The latter two are fixed using the new function `GHC.HsToCore.Binds.findSatArity`.
That actually simplifies the API of `makeCorePair`, which is nice.
The first bug is fixed by swapping the visiblity flags in
`GHC.Core.Opt.Arity.mkEtaForAllMCo`
Getting the INLINE behaviour right led to some perf changes:
* Runtime /halved/ on T7954 due to better specialisation
* Compile time increased by 6% in T21839c because a bit more inlining
happened, as it always should have done.
* For some reason compile-time max-bytes-used dropped by 30% on
T27336, but only on one build configuration; and it increased
on LinkableUsage02 by 6% on another configuration
Geometric mean effect on our compile time benchmarks is +0.1%.
Metric Decrease:
T27336
T7954
Metric Increase:
LinkableUsage02
T21839c
- - - - -
4f985108 by Vladislav Zavialov at 2026-08-07T17:49:50-04:00
Discard type arguments in tcPatToExpr (#27440, #27583)
The builder expression of an implicitly bidirectional pattern synonym must not
mention types written in the RHS:
* Invisible type arguments led to a panic (#27440)
* Required type arguments failed with out-of-scope variables (#27583)
Both are now discarded, following the precedent established by pattern
signatures (#9867).
Discarding type arguments takes some care: a type pattern cannot be told from a
value pattern by syntax alone, as the `type` keyword may be omitted. Consider:
data T a b c where
MkT :: forall a. forall b c -> a -> T a b c
pattern P :: x -> T x y z
pattern P x = MkT @a (type b) c x
In P's right-hand side, `@a` and `type b` are clearly type arguments, but what
about `c` and `x`? We can only tell by matching the patterns against MkT's
type. So tcPatToExpr now runs in TcM and matches the arguments against the
constructor's TyVarBinders using zipPatsBndrs, which is made public for this
purpose. The resulting builder is $bP x = MkT _ _ x.
See Note [Discarding types in the builder expression].
Test cases: T27440a T27440b T27440c T27440d T27440e
T27583a T27583b T27583c T27583d T27583e T27583f T27583g
Metric Increase: LinkableUsage02
Metric Decrease: T27336
Assisted-by: Claude Opus 5
- - - - -
eb1dcd4d by sheaf at 2026-08-07T17:50:40-04:00
mkWpFun_FRR: fix ordering of coercion composition
When the subsumption machinery generates an eta-expansion, we must
perform a representation polymorphism check to ensure the lambda binder
it introduces has a fixed runtime representation.
This is done in GHC.Tc.Utils.mkWpFun_FRR.
This check involves composing quite a few coercions, arising from
representation-polymorphism checks on both the actual and expected
argument types. These coercions are then chained using HsWrapper
composition, <.>. The ordering of composition was incorrect, leading to
the Core Lint failure reported in #27639. This commit fixes that.
Fixes #27639
- - - - -
3a552476 by Simon Jakobi at 2026-08-09T15:20:06-04:00
Word64Map: add compareSize
compareSize m c compares the size of a map to an Int, but unlike
compare (size m) c it stops traversing the map once the outcome is
determined.
Based on https://github.com/haskell/containers/pull/1139
Assisted-by: Claude Opus 5
- - - - -
6e2c99d8 by Simon Jakobi at 2026-08-09T15:20:06-04:00
Use a pigeonhole sort for deterministic UniqDFM iteration
Deterministic UniqDFM iteration used a list mergesort, allocating O(n
log n) cons cells and contributing significantly to compiler allocations
(#27459).
Use a pigeonhole sort where appropriate, while retaining the mergesort
fallback. See Note [Sorting a UDFM] and Note [Cost of deterministic
iteration].
The peak_megabytes_allocated increase for LinkableUsage02 is probably
due to GC timing noise. See #27613.
-------------------------
Metric Decrease:
InstanceMatching
InstanceMatching1
ManyAlternatives
T12707
T13379
T13719
T24471
T27336
T5321FD
T5321Fun
T783
Metric Increase 'peak_megabytes_allocated':
LinkableUsage02
-------------------------
Assisted-by: gpt-5.6-sol via Codex CLI
- - - - -
a938ab12 by sheaf at 2026-08-09T15:20:48-04:00
Testsuite: don't measure max residency for T27336
We really care more about total allocations for this test, so this commit
removes the maximum residency measurement.
- - - - -
7d94bb78 by Alan Zimmerman at 2026-08-09T15:21:29-04:00
EPA: Remove LocatedE, replace with LocatedA
This gets rid of one more LocatedXXX occurrence
- - - - -
9e2e3241 by mangoiv at 2026-08-10T11:04:50+02:00
ci: build and test stage
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ef698b27 by mangoiv at 2026-08-10T11:04:51+02:00
chore: reorder packaging and testing stages
- - - - -
4fef4f17 by mangoiv at 2026-08-10T12:05:58+02:00
fixup! ci: build and test stage
- - - - -
92 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- + changelog.d/T27368-ppr-unreachable-cmm-blocks.md
- + changelog.d/T27440
- + changelog.d/T27557
- + changelog.d/T27583
- + changelog.d/T27589
- + changelog.d/T27639
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Data/Word64Map/Internal.hs
- compiler/GHC/Data/Word64Map/Lazy.hs
- compiler/GHC/Data/Word64Map/Strict.hs
- compiler/GHC/Data/Word64Map/Strict/Internal.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Types/Arity.hs
- compiler/GHC/Types/InlinePragma.hs
- compiler/GHC/Types/Unique/DFM.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Unit/Module/Warnings.hs
- docs/users_guide/debugging.rst
- + flake.lock
- + flake.nix
- libraries/base/tests/perf/ElemFusionUnknownList_O1.stderr
- libraries/base/tests/perf/ElemFusionUnknownList_O2.stderr
- testsuite/tests/cmm/should_compile/Makefile
- + testsuite/tests/cmm/should_compile/T27368-ppr-debug.cmm
- + testsuite/tests/cmm/should_compile/T27368-ppr-debug.stdout
- testsuite/tests/cmm/should_compile/all.T
- testsuite/tests/ghc-api/exactprint/T22919.stderr
- testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr
- testsuite/tests/module/mod185.stderr
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/DumpSemis.stderr
- testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/T20718.stderr
- testsuite/tests/parser/should_compile/T20846.stderr
- + testsuite/tests/patsyn/should_compile/T27440a.hs
- + testsuite/tests/patsyn/should_compile/T27440b.hs
- + testsuite/tests/patsyn/should_compile/T27440c.hs
- testsuite/tests/patsyn/should_compile/all.T
- + testsuite/tests/patsyn/should_fail/T27440d.hs
- + testsuite/tests/patsyn/should_fail/T27440d.stderr
- testsuite/tests/patsyn/should_fail/all.T
- testsuite/tests/perf/compiler/all.T
- testsuite/tests/printer/Test20297.stdout
- testsuite/tests/printer/Test24533.stdout
- + testsuite/tests/rep-poly/T27639.hs
- testsuite/tests/rep-poly/all.T
- + testsuite/tests/simplCore/should_compile/T27589.hs
- + testsuite/tests/simplCore/should_compile/T27589.stderr
- + testsuite/tests/simplCore/should_compile/T27590.hs
- + testsuite/tests/simplCore/should_compile/T27590.stderr
- testsuite/tests/simplCore/should_compile/all.T
- + testsuite/tests/typecheck/should_compile/T27557.hs
- testsuite/tests/typecheck/should_compile/all.T
- + testsuite/tests/vdq-rta/should_compile/T27583a.hs
- + testsuite/tests/vdq-rta/should_compile/T27583b.hs
- + testsuite/tests/vdq-rta/should_compile/T27583c.hs
- + testsuite/tests/vdq-rta/should_compile/T27583d.hs
- + testsuite/tests/vdq-rta/should_compile/T27583e.hs
- + testsuite/tests/vdq-rta/should_compile/T27583g.hs
- testsuite/tests/vdq-rta/should_compile/all.T
- + testsuite/tests/vdq-rta/should_fail/T27440e.hs
- + testsuite/tests/vdq-rta/should_fail/T27440e.stderr
- + testsuite/tests/vdq-rta/should_fail/T27583f.hs
- + testsuite/tests/vdq-rta/should_fail/T27583f.stderr
- testsuite/tests/vdq-rta/should_fail/all.T
- utils/check-exact/ExactPrint.hs
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[Git][ghc/ghc][wip/T26548] 458 commits: DmdAnal: Take stable unfoldings into account when determining argument demands
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T26548 at Glasgow Haskell Compiler / GHC
Commits:
870243e4 by Zubin Duggal at 2026-03-12T17:33:28+05:30
DmdAnal: Take stable unfoldings into account when determining argument demands
Previously, demand analysis only looked at the RHS to compute argument demands.
If the optimised RHS discarded uses of an argument that the stable unfolding
still needed, it would be incorrectly marked absent. Worker/wrapper would then
replace it with LitRubbish, and inlining the stable unfolding would use the
rubbish value, causing a segfault.
To fix, we introduce addUnfoldingDemands which analyses the stable unfolding
with dmdAnal and combines its DmdType with the RHS's via the new `maxDmdType`
which combines the demands of the stable unfolding with the rhs, so we can avoid
any situation where we give an absent demand to something which is still used
by the stable unfolding.
Fixes #26416.
- - - - -
669d09f9 by Cheng Shao at 2026-03-13T15:06:07-04:00
hadrian: remove redundant library/rts ways definitions from stock flavours
This patch removes redundant library/rts ways definitions from stock
flavours in hadrian; they can be replaced by applying appropriate
filters on `defaultFlavour`.
- - - - -
a27dc081 by Teo Camarasu at 2026-03-13T15:06:51-04:00
ghc-internal: move bits Weak of finalizer interface to base
We move parts of the Weak finalizer interface to `base` only the parts
that the RTS needs to know about are kept in `ghc-internal`.
This lets us then prune our imports somewhat and get rid of some SOURCE imports.
Resolves #26985
- - - - -
6eef855b by Sylvain Henry at 2026-03-13T15:08:18-04:00
Stg/Unarise: constant-folding during unarisation (#25650)
When building an unboxed sum from a literal argument, mkUbxSum
previously emitted a runtime cast via `case primop [lit] of var -> ...`.
This wrapper prevented GHC from recognising the result as a static
StgRhsCon, causing top-level closures to be allocated as thunks instead
of being statically allocated.
Fix: try to perform the numeric literal cast at compile time using
mkLitNumberWrap (wrapping semantics). If successful, return the cast
literal directly with an identity wrapper (no case expression). The
runtime cast path is kept as fallback for non-literal arguments.
Test: codeGen/should_compile/T25650
- - - - -
905f8723 by Simon Jakobi at 2026-03-13T15:09:09-04:00
Add regression test for #2057
Test that GHC stops after an interface-file error instead of
continuing into the linker.
The test constructs a stale package dependency on purpose. `pkgB` is compiled
against one version of package `A`, then the same unit id is replaced by an
incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`,
finds an unfolding that still mentions the old `A`, and should fail while
loading interfaces.
Closes #2057.
Assisted-by: Codex
- - - - -
a13245a9 by Sylvain Henry at 2026-03-13T15:10:06-04:00
JS: fix recompilation avoidance (#23013)
- we were checking the mtime of the *.jsexe directory, not of a file
- we were not computing the PkgsLoaded at all
- - - - -
07442653 by Cheng Shao at 2026-03-13T15:10:51-04:00
hadrian: bump index state & bootstrap plans
This patch bumps hadrian index state & bootstrap plans:
- The updated index state allows bootstrapping from 9.14 without cabal
allow-newer hacks
- The updated bootstrap plans all contain shake-0.19.9 containing
important bugfix, allowing a subsequent patch to bump shake bound to
ensure the bugfix is included
- ghc 9.14.1 bootstrap plan is added
- - - - -
fdc1dbad by Cheng Shao at 2026-03-13T15:10:51-04:00
ci: add ghc 9.14.1 to bootstrap matrix
This patch adds ghc 9.14.1 to bootstrap matrix, so that we test
bootstrapping from ghc 9.14.1.
- - - - -
91916079 by Sylvain Henry at 2026-03-13T15:11:43-04:00
T17912: wait for opener thread to block before killing it (#24739)
Instead of a fixed 1000ms delay, poll threadStatus until the opener
thread is in BlockedOnForeignCall, ensuring killThread only fires once
the thread is provably inside the blocking open() syscall. This prevents
the test from accidentally passing on Windows due to scheduling races.
- - - - -
baa4ebb4 by Cheng Shao at 2026-03-13T15:12:26-04:00
template-haskell: fix redundant import in Language.Haskell.TH.Quote
This patch fixes a redundant import in `Language.Haskell.TH.Quote`
that causes a ghc build failure when bootstrapping from 9.14 with
validate flavours. Fixes #27014.
- - - - -
02e68a86 by Brandon Simmons at 2026-03-13T15:13:19-04:00
Add a cumulative gc_sync_elapsed_ns counter to GHC.Internal.Stats
This makes it possible to get an accurate view of time spent in sync
phase when using prometheus-style sampling. Previously this was only
available for the most recent GC.
This intentionally leaves GHC.Stats API unchanged since it is marked as
deprecated, and API changes there require CLC approval.
Fixes #26944
- - - - -
a18fa3c1 by Cheng Shao at 2026-03-14T05:12:14-04:00
configure: make $LLVMAS default to $CC when $CcLlvmBackend is YES
This patch changes the $LLVMAS detection logic in configure so that
when it's not manually specified by the user, it defaults to $CC if
$CcLlvmBackend is YES. It's a more sensible default than auto-detected
clang from the environment, especially when cross-compiling, $CC as
the cross target's LLVM assembler is more compatible with the use case
than the system-wide clang. Fixes #26769.
- - - - -
3774086e by Matthew Pickering at 2026-03-14T05:13:00-04:00
exceptions: annotate onException continuation with WhileHandling
Before this patch, an exception thrown in the `onException` handler
would loose track of where the original exception was thrown.
```
import Control.Exception
main :: IO ()
main = failingAction `onException` failingCleanup
where
failingAction = throwIO (ErrorCall "outer failure")
failingCleanup = throwIO (ErrorCall "cleanup failure")
```
would report
```
T28399: Uncaught exception ghc-internal:GHC.Internal.Exception.ErrorCall:
cleanup failure
HasCallStack backtrace:
throwIO, called at T28399.hs:<line>:<column> in <package-id>:Main
```
notice that the "outer failure" exception is not present in the error
message.
With this patch, any exception thrown is in the handler is annotated
with WhileHandling. The resulting message looks like
```
T28399: Uncaught exception ghc-internal:GHC.Internal.Exception.ErrorCall:
cleanup failure
While handling outer failure
HasCallStack backtrace:
throwIO, called at T28399.hs:7:22 in main:Main
```
CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/397
Fixes #26759
- - - - -
63ae8eb3 by Andreas Klebinger at 2026-03-14T05:13:43-04:00
Fix missing profiling header for origin_thunk frame.
Fixes #27007
- - - - -
213d2c0e by Cheng Shao at 2026-03-14T05:14:28-04:00
ci: fix ci-images revision
The current ci-images revision was a commit on the WIP branch of
https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/183, and
it's not on the current ci-images master branch. This patch fixes the
image revision to use the current tip of ci-images master.
- - - - -
fc2b083f by Andreas Klebinger at 2026-03-14T05:15:14-04:00
Revert "hadrian/build-cabal: Better respect and utilize -j"
This reverts commit eab3dbba79650e6046efca79133b4c0a5257613d.
While it's neat this currently isn't well supported on all platforms.
It's time will come, but for now I'm reverting this to avoid issues for
users on slightly unconvential platforms.
This will be tracked at #26977.
- - - - -
12a706cf by Cheng Shao at 2026-03-14T16:37:54-04:00
base: fix redundant imports in GHC.Internal.Weak.Finalize
This patch fixes redundant imports in GHC.Internal.Weak.Finalize that
causes a regression in bootstrapping head from 9.14 with validate
flavours. Fixes #27026.
- - - - -
b5d39cad by Matthew Pickering at 2026-03-14T16:38:37-04:00
Use explicit syntax rather than pure
- - - - -
43638643 by Andreas Klebinger at 2026-03-15T18:15:48-04:00
Configure: Fix check for --target support in stage0 CC
The check FP_PROG_CC_LINKER_TARGET used $CC unconditionally to check for
--target support. However this fails for the stage0 config where the C
compiler used is not $CC but $CC_STAGE0.
Since we already pass the compiler under test into the macro I simply
changed it to use that instead.
Fixes #26999
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18fd0df6 by Simon Hengel at 2026-03-15T18:16:33-04:00
Fix typo in recursive_do.rst
- - - - -
86bd9bfc by fendor at 2026-03-17T23:46:09-04:00
Introduce `-fimport-loaded-targets` GHCi flag
This new flag automatically adds all loaded targets to the GHCi session
by adding an `InteractiveImport` for the loaded targets.
By default, this flag is disabled, as it potentially increases memory-usage.
This interacts with the flag `-fno-load-initial-targets` as follows:
* If no module is loaded, no module is added as an interactive import.
* If a reload loads up to a module, all loaded modules are added as
interactive imports.
* Unloading modules removes them from the interactive context.
Fixes #26866 by rendering the use of a `-ghci-script` to achieve the
same thing redundant.
- - - - -
e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00
ghc-internal: Remove GHC.Internal.Data.Eq
It served no purpose other than being a re-export.
- - - - -
6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00
ghc-internal: Refine GHC.Internal.Base imports
Removed re-exports from GHC.Internal.Base. This reveals some modules
that don't actually use anything *defined* in GHC.Internal.Base, and
that can be pushed down a little in the import graph.
Replaced most imports of GHC.Internal.Base with non-wildcard imports
from modules where the identifiers are actually defined.
Part of #26834
Metric Decrease:
T5321FD
- - - - -
7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00
ci: clone, don't copy when creating the cabal cache
Also removed WINDOWS_HOST variable detected via uname - we now just
check whether the CI job has windows in its name. This works because we
only ever care about it if the respective job is not a cross job. We
also statically detect darwin cross jobs in the same way. We only ever have
darwin -> darwin cross jobs so this is enough to detect the host
reliably.
- - - - -
f8817879 by mangoiv at 2026-03-17T23:48:44-04:00
ci: mark size_hello_artifact fragile on darwin x86
The size of the x86_64 hello artifact is not stable which results in flaky testruns.
Resolves #26814
- - - - -
e34cb6da by Adam Gundry at 2026-03-20T12:20:00-04:00
ghci: Mention active language edition in startup banner
Per GHC proposal 632, this makes the GHCi startup banner include
the active language edition, plus an indication of whether this
was the default (as opposed to being explicitly selected via an
option such as `-XGHC2024`). For example:
```
$ ghci
GHCi, version 9.14.1: https://www.haskell.org/ghc/ :? for help
Using default language edition: GHC2024
ghci>
```
Fixes #26037.
- - - - -
52c3e6ba by sheaf at 2026-03-20T12:21:09-04:00
Improve incomplete record selector warnings
This commit stops GHC from emitting spurious incomplete record selector
warnings for bare selectors/projections such as .fld
There are two places we currently emit incomplete record selector
warnings:
1. In the desugarer, when we see a record selector or an occurrence
of 'getField'. Here, we can use pattern matching information to
ensure we don't give false positives.
2. In the typechecker, which might sometimes give false positives but
can emit warnings in cases that the pattern match checker would
otherwise miss.
This is explained in Note [Detecting incomplete record selectors]
in GHC.HsToCore.Pmc.
Now, we obviously don't want to emit the same error twice, and generally
we prefer (1), as those messages contain fewer false positives. So we
suppress (2) when we are sure we are going to emit (1); the logic for
doing so is in GHC.Tc.Instance.Class.warnIncompleteRecSel,
and works by looking at the CtOrigin.
Now, the issue was that this logic handled explicit record selectors as
well as overloaded record field selectors such as "x.r" (which turns
into a simple GetFieldOrigin CtOrigin), but it didn't properly handle
record projectors like ".fld" or ".fld1.fld2" (which result in other
CtOrigins such as 'RecordFieldProjectionOrigin').
To solve this problem, we re-use the 'isHasFieldOrigin' introduced in
fbdc623a (slightly adjusted).
On the way, we also had to update the desugarer with special handling
for the 'ExpandedThingTc' case in 'ds_app', to make sure that
'ds_app_var' sees all the type arguments to 'getField' in order for it
to indeed emit warnings like in (1).
Fixes #26686
- - - - -
309d7e87 by Cheng Shao at 2026-03-20T12:21:53-04:00
rts: opportunistically grow the MutableByteArray# in-place in resizeMutableByteArray#
Following !15234, this patch improves `resizeMutableByteArray#` memory
efficiency by growing the `MutableByteArray#` in-place if possible,
addressing an old todo comment here. Also adds a new test case
`resizeMutableByteArrayInPlace` that stresses this behavior.
- - - - -
7d4ef162 by Matthew Craven at 2026-03-20T12:22:47-04:00
Change representation of floating point literals
This commit changes the representation of floating point literals
throughough the compiler, in particular in Core and Cmm.
The Rational type is deficient for this purpose, dealing poorly
with NaN, +/-Infinity, and negative zero. Instead, the new module
GHC.Types.Literal.Floating uses the host Float/Double type to represent
NaNs, infinities and negative zero. It also contains a Rational
constructor, for the benefit of -fexcess-precision.
Other changes:
- Remove Note [negative zero] and related code
This also removes the restrictions on constant-folding of division
by zero, and should make any problems with NaN/Infinity more obvious.
- Use -0.0 as the additive identity for Core constant folding rules
for floating-point addition, fixing #21227.
- Manual worker-wrapper for GHC.Float.rationalToDouble. This is
intended to prevent the compiler's WW on this function from
interfering with constant-folding. This change means that we now
avoid allocating a box for the result of a 'realToFrac' call in
T10359.
- Combine floatDecodeOp and doubleDecodeOp.
This change also fixes a bug in doubleDecodeOp wherein it
would incorrectly produce an Int# instead of an Int64#
literal for the mantissa component with 64-bit targets.
- Use Float/Double for assembly immediates, and update the X86 and
PowerPC backends to properly handle special values such as NaN and
infinity.
- Allow 'rational_to' to handle zero denominators, fixing a
TODO in GHC.Core.Opt.ConstantFold.
Fixes #8364 #9811 #18897 #21227
Progress towards #26919
Metric Decrease:
T10359
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
-------------------------
Metric Decrease:
T1969
T5321FD
-------------------------
- - - - -
80e2dd4f by Zubin Duggal at 2026-03-20T12:23:33-04:00
compiler/ffi: Collapse void pointer chains in capi wrappers
New gcc/clang treat -Wincompatible-pointer-types as an error by
default. Since C only allows implicit conversion from void*, not void**,
capi wrappers for functions taking e.g. abstract** would fail to compile
when the Haskell type Ptr (Ptr Abstract) was naively translated to void**.
Collapse nested void pointers to a single void* when the pointee type
has no known C representation.
Fixes #26852
- - - - -
1c50bd7b by Luite Stegeman at 2026-03-20T12:24:37-04:00
Move some functions related to pointer tagging to a separate module
- - - - -
bfd7aafd by Luite Stegeman at 2026-03-20T12:24:37-04:00
Branchless unpacking for enumeration types
Change unpacking for enumeration types to go to Word8#/Word16#/Word#
directly instead of going through an intermediate unboxed sum. This
allows us to do a branchless conversion using DataToTag and TagToEnum.
Fixes #26970
- - - - -
72b20fc0 by Luite Stegeman at 2026-03-20T12:25:30-04:00
bytecode: Carefully SLIDE off the end of a stack chunk
The SLIDE bytecode instruction was not checking for stack chunk
boundaries and could corrupt the stack underflow frame, leading
to crashes.
We add a check to use safe writes if we cross the chunk boundary
and also handle stack underflow if Sp is advanced past the underflow
frame.
fix #27001
- - - - -
2e22b43c by Cheng Shao at 2026-03-20T12:26:14-04:00
ghci: serialize BCOByteArray buffer directly when possible
This patch changes the `Binary` instances of `BCOByteArray` to
directly serialize the underlying buffer when possible, while also
taking into account the issue of host-dependent `Word` width. See
added comments and amended `Note [BCOByteArray serialization]` for
detailed explanation. Closes #27020.
- - - - -
89d9ba37 by Sylvain Henry at 2026-03-20T12:27:34-04:00
JS: replace BigInt with Number arithmetic for 32/64-bit quot/rem (#23597)
Replace BigInt-based implementations of quotWord32, remWord32,
quotRemWord32, quotRem2Word32, quotWord64, remWord64, quotInt64, and
remInt64 with pure Number (double/integer) arithmetic to avoid the
overhead of BigInt promotion.
- - - - -
ae4ddd60 by Sylvain Henry at 2026-03-20T12:28:28-04:00
Core: add constant-folding rules for Addr# eq/ne (#18032)
- - - - -
3e767f98 by Matthew Pickering at 2026-03-20T12:29:11-04:00
Use OsPath rather than FilePath in Downsweep cache
This gets us one step closure to uniformly using `OsPath` in the
compiler.
- - - - -
2c57de29 by Cheng Shao at 2026-03-20T12:29:55-04:00
hadrian: fix ghc-in-ghci flavour stage0 shared libraries
This patch fixes missing stage0 shared libraries in hadrian
ghc-in-ghci flavour, which was accidentally dropped in
669d09f950a6e88b903d9fd8a7571531774d4d5d and resulted in a regression
in HLS support on linux/macos. Fixes #27057.
- - - - -
5b1be555 by Sylvain Henry at 2026-03-20T12:30:48-04:00
JS: install rts/Types.h header file (#27033)
It was an omission, making HsFFI.h not usable with GHC using the JS
backend.
- - - - -
b883f08f by Cheng Shao at 2026-03-20T12:31:33-04:00
hadrian: don't compile RTS with -Winline
This patch removes `-Winline` from cflags when compiling the RTS,
given that:
1. It generates a huge pile of spam and hurts developer experience
2. Whether inlining happens is highly dependent on toolchains,
flavours, etc, and it's not really an issue to fix if inlining
doesn't happen; it's a hint to the C compiler anyway.
Fixes #27060.
- - - - -
333387d6 by Cheng Shao at 2026-03-20T12:31:33-04:00
hadrian: compile libffi-clib with -Wno-deprecated-declarations
This patch adds `-Wno-deprecated-declarations` to cflags of
`libffi-clib`, given that it produces noise at compile-time that
aren't really our issue to fix anyway, it's from vendored libffi
source code.
- - - - -
67c47771 by Rodrigo Mesquita at 2026-03-20T12:32:17-04:00
Expose decodeStackWithIpe from ghc-experimental
This decoding is useful to the debugger and it wasn't originally
exported as an oversight.
- - - - -
18513365 by Matthew Pickering at 2026-03-21T04:43:26-04:00
Add support for custom external interpreter commands
It can be useful for GHC API clients to implement their own external
interpreter commands.
For example, the debugger may want an efficient way to inspect the
stacks of the running threads in the external interpreter.
- - - - -
4636d906 by mangoiv at 2026-03-21T04:44:10-04:00
ci: remove obsolete fallback for old debian and ubuntu versions
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2e3a2805 by mangoiv at 2026-03-21T04:44:10-04:00
ci: drop ubuntu 18 and 20
Ubuntu 18 EOL: May 2023
Ubuntu 20 EOL: May 2025
We should probably not make another major release supporting these platforms.
Also updates the generator script.
Resolves #25876
- - - - -
de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00
rts: fix -Wcompare-distinct-pointer-types errors
This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS
which should have been caught by the `validate` flavour but was
warnings in CI due to the recent `+werror` regression.
- - - - -
b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00
ghc-internal: fix unused imports
This commit fixes unused imports in `ghc-internal` which should have
been caught by the `validate` flavour but was warnings in CI due to
the recent `+werror` regression. Fixes #26987 #27059.
- - - - -
da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00
ghci: fix unused imports
This commit fixes unused imports in `ghci` which should have been
caught by the `validate` flavour but was warnings in CI due to the
recent `+werror` regression. Fixes #26987 #27059.
- - - - -
955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00
compiler: fix unused imports in GHC.Tc.Types.Origin
This commit fixes unused imports in `GHC.Tc.Types.Origin` which should
have been caught by the `validate` flavour but was warnings in CI due
to the recent `+werror` regression. Fixes #27059.
- - - - -
3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00
hadrian: fix missing +werror in validate flavour
This patch fixes missing `+werror` in validate flavour, which was an
oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066.
- - - - -
44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00
ci: bump CACHE_REV and add the missing reminder
This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI
errors due to stale cabal cache on some runners, and also adds a
reminder to remind future maintainers. Fixes #27075.
- - - - -
2a218737 by ARATA Mizuki at 2026-03-23T11:11:39-04:00
Add 128-bit SIMD support to AArch64 NCG
Changes:
- Add `Format` field to vector-capable instructions.
These instructions will emit `vN.4s` (for example) as a operand.
- Additional constructors for `Operand`:
`OpVecLane` represents a vector lane and will be emitted as `vN.<width>[<index>]` (`vN.s[3]` for example).
`OpScalarAsVec` represents a scalar, but printed as a vector lane like `vN.<width>[0]` (`vN.s[0]` for example).
- Integer quot/rem are implemented in C, like x86.
Closes #26536
Metric Increase:
T3294
- - - - -
5d6e2be9 by ARATA Mizuki at 2026-03-23T11:11:39-04:00
AArch64 NCG: Improve code generation for floating-point and vector constants
Some floating-point constants can be directly encoded using the FMOV instruction.
Similarly, a class of vectors with same values can be encoded using FMOV, MOVI, or MVNI.
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c6d262aa by Simon Jakobi at 2026-03-23T11:12:22-04:00
Add regression test for #13729
Closes #13729.
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aa5dfe67 by Sylvain Henry at 2026-03-26T03:48:56-04:00
Check that shift values are valid
In GHC's codebase in non-DEBUG builds we silently substitute shiftL/R
with unsafeShiftL/R for performance reasons. However we were not
checking that the shift value was valid for unsafeShiftL/R, leading to
wrong computations, but only in non-DEBUG builds.
This patch adds the necessary checks and reports an error when a wrong
shift value is passed.
- - - - -
c8a7b588 by Sylvain Henry at 2026-03-26T03:48:56-04:00
Implement basic value range analysis (#25718)
Perform basic value range analysis to try to determine at compile time
the result of the application of some comparison primops (ltWord#, etc.).
This subsumes the built-in rewrite rules used previously to check if one
of the comparison argument was a bound (e.g. (x :: Word8) <= 255 is
always True). Our analysis is more powerful and handles type
conversions: e.g. word8ToWord x <= 255 is now detected as always True too.
We also use value range analysis to filter unreachable alternatives in
case-expressions. To support this, we had to allow case-expressions for
primitive types to not have a DEFAULT alternative (as was assumed before
and checked in Core lint).
- - - - -
a5ec467e by ARATA Mizuki at 2026-03-26T03:49:49-04:00
rts: Align stack to 64-byte boundary in StgRun on x86
When LLVM spills AVX/AVX-512 vector registers to the stack, it requires
32-byte (__m256) or 64-byte (__m512) alignment. If the stack is not
sufficiently aligned, LLVM inserts a realignment prologue that reserves
%rbp as a frame pointer, conflicting with GHC's use of %rbp as an STG
callee-saved register and breaking the tail-call-based calling convention.
Previously, GHC worked around this by lying to LLVM about the stack
alignment and rewriting aligned vector loads/stores (VMOVDQA, VMOVAPS)
to unaligned ones (VMOVDQU, VMOVUPS) in the LLVM Mangler. This had two
problems:
- It did not extend to AVX-512, which requires 64-byte alignment. (#26595)
- When Haskell calls a C function that takes __m256/__m512 arguments on
the stack, the callee requires genuine alignment, which could cause a
segfault. (#26822)
This patch genuinely aligns the stack to 64 bytes in StgRun by saving
the original stack pointer before alignment and restoring it in
StgReturn. We now unconditionally advertise 64-byte stack alignment to
LLVM for all x86 targets, making rewriteAVX in the LLVM Mangler
unnecessary. STG_RUN_STACK_FRAME_SIZE is increased from 48 to 56 bytes
on non-Windows x86-64 to store the saved stack pointer.
Closes #26595 and #26822
Co-Authored-By: Claude Opus 4.5 <noreply(a)anthropic.com>
- - - - -
661da815 by Teo Camarasu at 2026-03-26T03:50:33-04:00
ghc-internal: Float Generics to near top of module graph
We remove GHC.Internal.Generics from the critical path of the
`ghc-internal` module graph. GHC.Internal.Generics used to be in the
middle of the module graph, but now it is nearer the top (built later).
This change thins out the module graph and allows us to get rid of the
ByteOrder hs-boot file.
We implement this by moving Generics instances from the module where the
datatype is defined to the GHC.Internal.Generics module. This trades off
increasing the compiled size of GHC.Internal.Generics with reducing the
dependency footprint of datatype modules.
Not all instances are moved to GHC.Internal.Generics. For instance,
`GHC.Internal.Control.Monad.Fix` keeps its instance as it is one of the
very last modules compiled in `ghc-internal` and so inverting the
relationship here would risk adding GHC.Internal.Generics back onto the
critical path.
We also don't change modules that are re-exported from the `template-haskell` or `ghc-heap`.
This is done to make it easy to eventually move `Generics` to `base`
once something like #26657 is implemented.
Resolves #26930
Metric Decrease:
T21839c
- - - - -
45428f88 by sheaf at 2026-03-26T03:51:31-04:00
Avoid infinite loop in deep subsumption
This commit ensures we only unify after we recur in the deep subsumption
code in the FunTy vs non-FunTy case of GHC.Tc.Utils.Unify.tc_sub_type_deep,
to avoid falling into an infinite loop.
See the new Wrinkle [Avoiding a loop in tc_sub_type_deep] in
Note [FunTy vs non-FunTy case in tc_sub_type_deep] in GHC.Tc.Utils.Unify.
Fixes #26823
Co-authored-by: simonpj <simon.peytonjones(a)gmail.com>
- - - - -
2823b039 by Ian Duncan at 2026-03-26T03:52:21-04:00
AArch64: fix MOVK regUsageOfInstr to mark dst as both read and written
MOVK (move with keep) modifies only a 16-bit slice of the destination
register, so the destination is both read and written. The register
allocator must know this to avoid clobbering live values. Update
regUsageOfInstr to list the destination in both src and dst sets.
No regression test: triggering the misallocation requires specific
register pressure around a MOVK sequence, which is difficult to
reliably provoke from Haskell source.
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57b7878d by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #12002
Closes #12002.
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c8f9df2d by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #12046
Closes #12046.
Co-authored-by: Andreas Klebinger <klebinger.andreas(a)gmx.at>
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615d72ac by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #13180
Closes #13180.
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423eebcf by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #11141
Closes #11141.
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286849a4 by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #11505
Closes #11505.
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7db149d9 by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression perf test for #13820
Closes #13820.
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e73c4adb by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #10381
Closes #10381.
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5ebcfb57 by Benjamin Maurer at 2026-03-26T03:54:02-04:00
Generate assembly on x86 for word2float (#22252)
We used to emit C function call for MO_UF_Conv primitive.
Now emits direct assembly instead.
Co-Authored-By: Sylvain Henry <sylvain(a)haskus.fr>
Co-Authored-By: Claude Sonnet 4.6 <noreply(a)anthropic.com>
- - - - -
5b550754 by Matthew Pickering at 2026-03-26T03:54:51-04:00
rts: forward clone-stack messages after TSO migration
MSG_CLONE_STACK assumed that the target TSO was still owned by the
capability that received the message. This is not always true: the TSO
can migrate before the inbox entry is handled.
When that happened, handleCloneStackMessage could clone a live stack from
the wrong capability and use the wrong capability for allocation and
performTryPutMVar, leading to stack sanity failures such as
checkStackFrame: weird activation record found on stack.
Fix this by passing the current capability into
handleCloneStackMessage, rechecking msg->tso->cap at handling time, and
forwarding the message if the TSO has migrated. Once ownership matches,
use the executing capability consistently for cloneStack, rts_apply, and
performTryPutMVar.
Fixes #27008
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ef0a1bd2 by mangoiv at 2026-03-26T03:55:34-04:00
release tracking: adopt release tracking ticket from #16816
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a7f40fd9 by mangoiv at 2026-03-26T03:55:34-04:00
release tracking: add a release tracking ticket
Brings the information in the release tracking ticket up to date with
https://gitlab.haskell.org/ghc/ghc-hq/-/blob/main/release-management.mkd
Resolves #26691
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161d3285 by Teo Camarasu at 2026-03-26T03:56:18-04:00
Revert "Set default eventlog-flush-interval to 5s"
Flushing the eventlog forces a synchronisation of all the capabilities
and there was a worry that this might lead to a performance cost for
some highly parallel workloads.
This reverts commit 66b96e2a591d8e3d60e74af3671344dfe4061cf2.
- - - - -
36eed985 by Cheng Shao at 2026-03-26T03:57:03-04:00
ghc-boot: move GHC.Data.SmallArray to ghc-boot
This commit moves `GHC.Data.SmallArray` from the `ghc` library to
`ghc-boot`, so that it can be used by `ghci` as well:
- The `Binary` (from `ghc`) instance of `SmallArray` is moved to
`GHC.Utils.Binary`
- Util functions `replicateSmallArrayIO`, `mapSmallArrayIO`,
`mapSmallArrayM_`, `imapSmallArrayM_` , `smallArrayFromList` and
`smallArrayToList` are added
- The `Show` instance is added
- The `Binary` (from `binary`) instance is added
- - - - -
fdf828ae by Cheng Shao at 2026-03-26T03:57:03-04:00
compiler: use `Binary` instance of `BCOByteArray` for bytecode objects
This commit defines `Binary` (from `compiler`) instance of
`BCOByteArray` which serializes the underlying buffer directly, and
uses it directly in bytecode object serialization. Previously we reuse
the `Binary` (from `binary`) instance, and this change allows us to
avoid double-copying via an intermediate `ByteString` when using
`put`/`get` in `binnary`. Also see added comment for explanation.
- - - - -
3bf62d0a by Cheng Shao at 2026-03-26T03:57:03-04:00
ghci: use SmallArray directly in ResolvedBCO
This patch makes ghci use `SmallArray` directly in `ResolvedBCO` when
applicable, making the memory representation more compact and reducing
marshaling overhead. Closes #27058.
- - - - -
3d6492ce by Wen Kokke at 2026-03-26T03:57:53-04:00
Fix race condition between flushEventLog and start/endEventLogging.
This commit changes `flushEventLog` to acquire/release the `state_change` mutex to prevent interleaving with `startEventLogging` and `endEventLogging`. In the current RTS, `flushEventLog` _does not_ acquire this mutex, which may lead to eventlog corruption on the following interleaving:
- `startEventLogging` writes the new `EventLogWriter` to `event_log_writer`.
- `flushEventLog` flushes some events to `event_log_writer`.
- `startEventLogging` writes the eventlog header to `event_log_writer`.
This causes the eventlog to be written out in an unreadable state, with one or more events preceding the eventlog header.
This commit renames the old function to `flushEventLog_` and defines `flushEventLog` simply as:
```c
void flushEventLog(Capability **cap USED_IF_THREADS)
{
ACQUIRE_LOCK(&state_change_mutex);
flushEventLog_(cap);
RELEASE_LOCK(&state_change_mutex);
}
```
The old function is still needed internally within the compilation unit, where it is used in `endEventLogging` in a context where the `state_change` mutex has already been acquired. I've chosen to mark `flushEventLog_` as static and let other uses of `flushEventLog` within the RTS refer to the new version. There is one use in `hs_init_ghc` via `flushTrace`, where the new locking behaviour should be harmless, and one use in `handle_tick`, which I believe was likely vulnerable to the same race condition, so the new locking behaviour is desirable.
I have not added a test. The behaviour is highly non-deterministic and requires a program that concurrently calls `flushEventLog` and `startEventLogging`/`endEventLogging`. I encountered the issue while developing `eventlog-socket` and within that context have verified that my patch likely addresses the issue: a test that used to fail within the first dozen or so runs now has been running on repeat for several hours.
- - - - -
7b9a75f0 by Phil Hazelden at 2026-03-26T03:58:37-04:00
Fix build with werror on glibc 2.43.
We've been defining `_XOPEN_SOURCE` and `_POSIX_C_SOURCE` to the same
values as defined in glibc prior to 2.43. But in 2.43, glibc changes
them to new values, which means we get a warning when redefining them.
By `#undef`ing them first, we no longer get a warning.
Closes #27076.
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fe6e76c5 by Tobias Haslop at 2026-03-26T03:59:30-04:00
Fix broken Haddock link to Bifunctor class in description of Functor class
- - - - -
404b71c1 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Fix assert in Interpreter.c
If we skip exactly the number of words on the stack we end up on
the first word in the next chunk.
- - - - -
a85bd503 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Support arbitrary size unboxed tuples in bytecode
This stores the size (number of words on the stack) of the next
expected tuple in the TSO, ctoi_spill_size field, eliminating
the need of stg_ctoi_tN frames for each size.
Note: On 32 bit platform there is still a bytecode tuple size
limit of 255 words on the stack.
Fixes #26946
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e2209031 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Add specialized frames for small tuples
Small tuples are now returned more efficiently to the interpreter.
They use one less word of stack space and don't need manipulation
of the TSO anymore.
- - - - -
b26bb2ea by VeryMilkyJoe at 2026-03-27T04:41:38-04:00
Remove backwards compatibility pattern synonym `ModLocation`
Fixes #24932
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66e5e324 by Vladislav Zavialov at 2026-03-27T04:42:25-04:00
Extend HsExpr with the StarIsType syntax (#26587, #26967)
This patch allows kinds of the form `k -> *` and `* -> k` to occur in
expression syntax, i.e. to be used as required type arguments.
For example:
{-# LANGUAGE RequiredTypeArguments, StarIsType #-}
x1 = f (* -> * -> *)
x2 = f (forall k. k -> *)
x3 = f ((* -> *) -> Constraint)
Summary of the changes:
* Introduce the HsStar constructor of HsExpr and its extension field XStar.
It is analogous to HsStarTy in HsType.
* Refactor HsStarTy to store the unicode flag as TokStar, defined as
type TokStar = EpUniToken "*" "★" -- similar to TokForall, TokRArrow, etc.
The token is stored in the extension field and replaces the Bool field.
* Extend the `infixexp2` nonterminal to parse `*` as a direct argument of `->`.
This is more limited than the full StarIsType syntax, but has the nice
property of not conflicting with the multiplication operator `a * b`.
Test case: T26967 T26967_tyop
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f8de456f by Sylvain Henry at 2026-03-27T04:43:22-04:00
STM: don't create a transaction in the rhs of catchRetry# (#26028)
We don't need to create a transaction for the rhs of (catchRetry#)
because contrary to the lhs we don't need to abort it on retry. Moreover
it is particularly harmful if we have code such as (#26028):
let cN = readTVar vN >> retry
tree = c1 `orElse` (c2 `orElse` (c3 `orElse` ...))
atomically tree
Because it will stack transactions for the rhss and the read-sets of all
the transactions will be iteratively merged in O(n^2) after the
execution of the most nested retry.
This is the second attempt at implementing this. The first attempt
triggered segfaults (#26291) and has been reverted.
Co-Authored-By: Claude Sonnet 4.6 <noreply(a)anthropic.com>
- - - - -
fcf092dd by Luite Stegeman at 2026-03-27T04:44:17-04:00
Windows: remove StgAsyncIOResult and fix crash/leaks
In stg_block_async{_void}, a stack slot was reserved for
an StgAsyncIOResult. This slot would be filled by the IO
manager upon completion of the async call.
However, if the blocked thread was interrupted by an async
exception, we would end up in an invalid state:
- If the blocked computation was never re-entered, the
StgAsyncIOResult would never be freed.
- If the blocked computation was re-entered, the thread would
find an unitialized stack slot for the StgAsyncIOResult,
leading to a crash reading its fields, or freeing the pointer.
We fix this by removing the StgAsyncIOResult altogether and writing
the result directly to the stack.
Fixes #26341
- - - - -
05094993 by Luite Stegeman at 2026-03-27T04:45:12-04:00
Don't refine DEFAULT alt for unary typeclasses
A non-DEFAULT data alt for a unary typeclass dictionary would
interfere with Unary Class Magic, leading to segfaults.
fixes #27071
- - - - -
4ee260cf by sheaf at 2026-03-27T04:46:06-04:00
Fix several oversights in hsExprType
This commit fixes several oversights in GHC.Hs.Syn.Type.hsExprType:
- The 'RecordCon' case was returning the type of the constructor,
instead of the constructor application. This is fixed by using
'splitFunTys'.
- The 'ExplicitTuple' case failed to take into account tuple sections,
and was also incorrectly handling 1-tuples (e.g. 'Solo') which can
be constructed using Template Haskell.
- The 'NegApp' case was returning the type of the negation operator,
again failing to apply it to the argument. Fixed by using
'funResultTy'.
- The 'HsProc' case was computing the result type of the arrow proc
block, without taking into account the argument type. Fix that by
adding a new field to 'CmdTopTc' that stores the arrow type, so that
we can construct the correct result type `arr a b` for
`proc (pat :: a) -> (cmd :: b)`.
- The 'ArithSeq' and 'NegApp' cases were failing to take into account
the result 'HsWrapper', which could e.g. silently drop casts.
This is fixed by introducing 'syntaxExpr_wrappedFunResTy' which, on
top of taking the result type, applies the result 'HsWrapper'.
These fixes are validated by the new GHC API test T26910.
Fixes #26910
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e97232ce by Hai at 2026-03-27T04:47:04-04:00
Parser.y: avoid looking at token with QualifiedDo
This changes the behavior of 'hintQualifiedDo' so that the supplied
token is not inspected when the QualifiedDo language extension bit is
set.
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9831385b by Vladislav Zavialov at 2026-03-27T17:22:30-04:00
Infix holes in types (#11107)
This patch introduces several improvements that follow naturally from
refactoring HsOpTy to represent the operator as an HsType, aligning it
with the approach taken by OpApp and HsExpr.
User-facing changes:
1. Infix holes (t1 `_` t2) are now permitted in types, following the
precedent set by term-level expressions.
Test case: T11107
2. Error messages for illegal promotion ticks are now reported at more
precise source locations.
Test case: T17865
Internal changes:
* The definition of HsOpTy now mirrors that of OpApp:
| HsOpTy (XOpTy p) (LHsType p) (LHsType p) (LHsType p)
| OpApp (XOpApp p) (LHsExpr p) (LHsExpr p) (LHsExpr p)
This moves us one step closer to unifying HsType and HsExpr.
* Ignoring locations,
the old pattern match (HsOpTy x prom lhs op rhs)
is now written as (HsOpTy x lhs (HsTyVar x' prom op) rhs)
but we also handle (HsOpTy x lhs (HsWildCardTy x') rhs)
Constructors other than HsTyVar and HsWildCardTy never appear
in the operator position.
* The various definitions across the compiler have been updated to work
with the new representation, drawing inspiration from the term-level
pipeline where appropriate. For example,
ppr_infix_ty <=> ppr_infix_expr
get_tyop <=> get_op
lookupTypeFixityRn <=> lookupExprFixityRn
(the latter is factored out from rnExpr)
Test cases: T11107 T17865
- - - - -
5b6757d7 by mangoiv at 2026-03-27T17:23:19-04:00
ci: build i386 non-validate for deb12
This is a small fix that will unlock ghcup metadata to run, i386 debian
12 was missing as a job.
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cf942119 by Cheng Shao at 2026-03-30T15:24:37-04:00
ghc-boot: remove unused SizedSeq instances and functions
This commit removes unused `SizedSeq` instances and functions, only
keeping the bits we need for hpc tick sequence for now.
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22c5b7cc by Cheng Shao at 2026-03-30T15:24:38-04:00
ghci: remove unused GHCi.BinaryArray
This patch removes the unused `GHCi.BinaryArray` module from `ghci`.
Closes #27108.
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77abb4ab by Cheng Shao at 2026-03-30T15:25:21-04:00
testsuite: mark T17912 as fragile on Windows
T17912 is still fragile on Windows, it sometimes unexpectedly pass in
CI. This especially strains our already scarce Windows CI runner
resources. Mark it as fragile on Windows for the time being.
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d741a6cc by Andreas Klebinger at 2026-03-31T04:39:33-04:00
Bump minimum shake version for hadrian.
We also add the shake version we want to stack.yaml
Fixes #26884
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5e556f9e by Vladislav Zavialov at 2026-03-31T04:40:16-04:00
Status check for the HsType~HsExpr refactoring (#25121)
Add a test case to track the status of a refactoring project within GHC
whose goal is to arrive at the following declaration:
type HsType = HsExpr
The rationale for this is to increase code reuse between the term- and
type-level code in the compiler front-end (AST, parser, renamer, type checker).
The status report is saved to testsuite/tests/ghc-api/T25121_status.stdout
and provides useful insights into what needs to happen to make progress on
the ticket.
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acffb1b1 by fendor at 2026-03-31T04:41:02-04:00
Extract Binary instances to `GHC.ByteCode.Binary`
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e2ea8e25 by fendor at 2026-03-31T04:41:02-04:00
Add `seqNonEmpty` for evaluating `NonEmpty a`
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048b00b7 by fendor at 2026-03-31T04:41:02-04:00
Record `LinkableUsage` instead of `Linkable` in `LoaderState`
Retaining a ByteCode `Linkable` after it has been loaded retains its
`UnlinkedBCO`, keeping it alive for the remainder of the program.
This starts accumulating a lot of `UnlinkedBCO` and memory over time.
However, the `Linkable` is merely used to later record its usage in
`mkObjectUsage`, which is used for recompilation checking.
However, this is incorrect, as the interface file and bytecode objects
could be in different states, e.g. the interface changes, but the
bytecode library hasn't changed so we don't need to recompile and vice
versa.
By computing a `Fingerprint` for the `ModuleByteCode`, and recording it
in the `LinkableUsage`, we know precisely whether the `ByteCode` object
on disk is outdated.
Thus, parts of this commit just makes sure that we efficiently compute a
`Fingerprint` for `ModuleByteCode` and store it in the on-disk
representation of `ModuleByteCode`.
We change the `LoaderState` to retain `LinkableUsage`, which is smaller
representation of a `Linkable`. This allows us to free the unneeded
fields of `Linkable` after linking them.
We declare the following memory invariants that this commit implements:
* No `LinkablePart` should be retained from `LoaderState`.
* `Linkable`s should be unloaded after they have been loaded.
These invariants are unfortunately tricky to automatically uphold, so we
are simply documenting our assumptions for now.
We introduce the `linkable-space` test which makes sure that after
loading, no `DotGBC` or `UnlinkedBCO` is retained.
-------------------------
Metric Increase:
MultiLayerModulesTH_OneShot
-------------------------
We allocate a bit more, but the peak number of bytes doesn't change.
While a bit unfortunate, accepting the metric increase.
We add multiple new performance measurements where we were able to
observe the desired memory invariants. Further, we add regression tests
to validate that the recompilation checker behaves more correct than
before.
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2d1c1997 by Simon Jakobi at 2026-03-31T04:41:46-04:00
Eliminate dictionary-passing in ListMap operations
Mark the ListMap helpers 'INLINABLE' so importing modules can specialise
the 'TrieMap (ListMap m)' methods and avoid recursive dictionary-passing.
See Note [Making ListMap operations specialisable].
Fixes #27097
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ed2c6570 by Cheng Shao at 2026-03-31T04:42:33-04:00
testsuite: fix testdir cleanup logic on Windows
testdir cleanup is unreliable on Windows (#13162) and despite existing
hacks in the driver, new failure mode has occurred. This patch makes
it print the warning and carry on when failed to clean up a testdir,
instead of reporting a spurious framework failure. See added comment
for detailed explanation.
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d9388e29 by Simon Jakobi at 2026-03-31T13:14:59-04:00
Add regression test for #18177
Closes #18177.
Assisted-by: Codex
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6a10045c by mangoiv at 2026-03-31T13:15:43-04:00
ci: allow metric decrease for two tests on i386
There has been a nightly failure on i386 due to a compiler runtime
improvement on i386 debian 12. We allow that.
Metric Decrease (test_env='i386-linux-deb12'):
T12707 T8095
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7fbb4fcb by Rodrigo Mesquita at 2026-04-01T12:16:33+00:00
Bump default language edition to GHC2024
As per the accepted ghc-proposal#632
Fixes #26039
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5ae43275 by Peng Fan at 2026-04-01T19:01:06-04:00
NCG/LA64: add cmpxchg and xchg primops
And append some new instructions for LA664 uarch.
Apply fix to cmpxchg-prim by Andreas Klebinger.
Suggestions in https://gitlab.haskell.org/ghc/ghc/-/merge_requests/15515
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8f95534a by Duncan Coutts at 2026-04-01T19:01:52-04:00
Remove signal-based ticker implementations
Fixes issue #27073
All supported platforms should work with the pthreads + nanosleep based
ticker implementation. This avoids all the problems with using signals.
In practice, all supported platforms were probably using the non-signal
tickers already, which is probably why we do not get lots of reports
about deadlocks and other weirdness: we were definately using functions
that are not async signal safe in the tick handler (such as fflush to
flussh the eventlog).
Only Solaris was explicitly using the timer_create ticker impl, and even
Solaris could probably use the pthreads one (if anyone cared: Solaris is
no longer a Teir 3 supported platform).
Plausibly the only supported platform that this will change will be AIX,
which should now use the pthreads impl.
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51b32b0d by Duncan Coutts at 2026-04-01T19:01:52-04:00
Tidy up some timer/ticker comments elsewhere
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7562bcd7 by Duncan Coutts at 2026-04-01T19:01:52-04:00
Remove now-unused install_vtalrm_handler
Support function used by both of the signal-based ticker
implementations.
- - - - -
6da127c7 by Duncan Coutts at 2026-04-01T19:01:52-04:00
No longer probe for timer_create in rts/configure
It was only used by the TimerCreate.c ticker impl.
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3fd490fa by Duncan Coutts at 2026-04-01T19:01:53-04:00
Note that rtsTimerSignal is deprecated.
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63099b0f by Simon Jakobi at 2026-04-01T19:02:39-04:00
Add perf test for #13960
Closes #13960.
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58009c14 by Apoorv Ingle at 2026-04-02T09:51:24+01:00
Streamline expansions using HsExpansion (#25001)
Notes added [Error Context Stack] [Typechecking by expansion: overview]
Notes updated Note [Expanding HsDo with XXExprGhcRn] [tcApp: typechecking applications]
-------------------------
Metric Decrease:
T9020
-------------------------
There are 2 key changes:
1. `HsExpand` datatype mediates between expansions
2. Replace `ErrCtxtM` to a simpler `HsCtxt` that does not depend on a `TidyEnv`
This has some consequences detailed below:
1. `HsExpand` datatype mediates between expansions
* Simplifies the implementations of `tcExpr` to work on `XExpr`
* Removes `VACtxt` (and its associated `VAExpansion` and `VACall`) datatype, it is subsumed by simply a `SrcSpan`.
* Removes the function `addHeadCtxt` as it is now mearly setting a location
* The function `tcValArgs` does its own argument number management
* move `splitHsTypes` out of `tcApp`
* Removes special case of tcBody from `tcLambdaMatches`
* Removes special case of `dsExpr` for `ExpandedThingTc`
* Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr`
* Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span`
* Remove `PopErrCtxt` from `XXExprGhcRn`
* `fun_orig` in tcInstFun depends on the SrcSpan of the head of the application chain (similar to addArgCtxt)
- it references the application chain head if it is user located, or
uses the error context stack as a fallback if it's a generated
location
* Make a new variant `GeneratedSrcSpan` in `SrcSpan` for HIEAst Nodes
- Expressions wrapped around `GeneratedSrcSpan` are ignored and never added to the error context stack
- In Explicit list expansion `fromListN` is wrapped with a `GeneratedSrcSpan` with `GeneratedSrcSpanDetails` field to store the original srcspan
2. Replace `ErrCtxtM` to a simpler `HsCtxt` that does not depend on a `TidyEnv`
* Merge `HsThingRn` to `HsCtxt`
* Landmark Error messages are now just computed on the fly
* Make HsExpandedRn and HsExpandedTc payload a located HsExpr GhcRn
* `HsCtxt` are tidied and zonked at the end right before printing
Co-authored-by: simonpj <simon.peytonjones(a)gmail.com>
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bc4b4487 by Zubin Duggal at 2026-04-03T14:22:27-04:00
driver: recognise .dyn_o as a valid object file to link if passed on the command line.
This allows plugins compiled with this suffix to run.
Fixes #24486
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5ebb9121 by Simon Jakobi at 2026-04-03T14:23:11-04:00
Add regression test for #16145
Closes #16145.
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c1fc1c44 by Simon Peyton Jones at 2026-04-03T19:56:07-04:00
Refactor eta-expansion in Prep
The Prep pass does eta-expansion but I found cases where it was
doing bad things. So I refactored and simplified it quite a bit.
In the new design
* There is no distinction between `rhs` and `body`; in particular,
lambdas can now appear anywhere, rather than just as the RHS of
a let-binding.
* This change led to a significant simplification of Prep, and
a more straightforward explanation of eta-expansion. See the new
Note [Eta expansion]
* The consequences is that CoreToStg needs to handle naked lambdas.
This is very easy; but it does need a unique supply, which forces
some simple refactoring. Having a unique supply to hand is probably
a good thing anyway.
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21beda2c by Simon Peyton Jones at 2026-04-03T19:56:07-04:00
Clarify Note [Interesting dictionary arguments]
Ticket #26831 ended up concluding that the code for
GHC.Core.Opt.Specialise.interestingDict was good, but the
commments were a bit inadequate.
This commit improves the comments slightly.
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3eaac1f2 by Simon Peyton Jones at 2026-04-03T19:56:07-04:00
Make inlining a bit more eager for overloaded functions
If we have
f d = ... (class-op d x y) ...
we should be eager to inline `f`, because that may change the
higher order call (class-op d x y) into a call to a statically
known function.
See the discussion on #26831.
Even though this does a bit /more/ inlining, compile times
decrease by an average of 0.4%.
Compile time changes:
DsIncompleteRecSel3(normal) 431,786,104 -2.2%
ManyAlternatives(normal) 670,883,768 -1.6%
ManyConstructors(normal) 3,758,493,832 -2.6% GOOD
MultilineStringsPerf(normal) 29,900,576 -2.8%
T14052Type(ghci) 1,047,600,848 -1.2%
T17836(normal) 392,852,328 -5.2%
T18478(normal) 442,785,768 -1.4%
T21839c(normal) 341,536,992 -14.1% GOOD
T3064(normal) 174,086,152 +5.3% BAD
T5631(normal) 506,867,800 +1.0%
hard_hole_fits(normal) 209,530,736 -1.3%
info_table_map_perf(normal) 19,523,093,184 -1.2%
parsing001(normal) 377,810,528 -1.1%
pmcOrPats(normal) 60,075,264 -0.5%
geo. mean -0.4%
minimum -14.1%
maximum +5.3%
Runtime changes
haddock.Cabal(normal) 27,351,988,792 -0.7%
haddock.base(normal) 26,997,212,560 -0.6%
haddock.compiler(normal) 219,531,332,960 -1.0%
Metric Decrease:
LinkableUsage01
ManyConstructors
T17949
T21839c
T13035
TcPlugin_RewritePerf
hard_hole_fits
Metric Increase:
T3064
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5cbc2c82 by Matthew Pickering at 2026-04-03T19:57:02-04:00
bytecode: Add magic header/version to bytecode files
In order to avoid confusing errors when using stale interface files (ie
from an older compiler version), we add a simple header/version check
like the one for interface files.
Fixes #27068
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d95a1936 by fendor at 2026-04-03T19:57:02-04:00
Add constants for bytecode in-memory buffer size
Introduce a common constant for the default size of the .gbc and
.bytecodelib binary buffer.
The buffer is by default set to 1 MB.
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b822c30a by mangoiv at 2026-04-03T19:57:49-04:00
testsuite: filter stderr for static001 on darwin
This reactivates the test on x86_64 darwin as this should have been done
long ago and ignores warnings emitted by ranlib on newer version of the
darwin toolchain since they are benign. (no symbols for stub libraries)
Fixes #27116
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28ce1f8a by Andreas Klebinger at 2026-04-03T19:58:44-04:00
Give the Data instance for ModuleName a non-bottom toConstr implementation.
I've also taken the liberty to add Note [Data.Data instances for GHC AST Types]
describing some of the uses of Data.Data I could find.
Fixes #27129
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8ca41ffe by mangoiv at 2026-04-03T19:59:30-04:00
issue template: fix add bug label
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3981db0c by Sylvain Henry at 2026-04-03T20:00:33-04:00
Add more canned GC functions for common register patterns (#27142)
Based on analysis of heap-check sites across the GHC compiler and Cabal,
the following patterns were not covered by existing canned GC functions
but occurred frequently enough to warrant specialisation:
stg_gc_ppppp -- 5 GC pointers
stg_gc_ip -- unboxed word + GC pointer
stg_gc_pi -- GC pointer + unboxed word
stg_gc_ii -- two unboxed words
stg_gc_bpp -- byte (I8) + two GC pointers
Adding these reduces the fraction of heap-check sites falling back to
the generic GC path from ~1.4% to ~0.4% when compiling GHC itself.
Co-Authored-By: Claude Sonnet 4.6 <noreply(a)anthropic.com>
- - - - -
d17d1435 by Matthew Pickering at 2026-04-03T20:01:19-04:00
Make home unit dependencies stored as sets
Co-authored-by: Wolfgang Jeltsch <wolfgang(a)well-typed.com>
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92a97015 by Simon Peyton Jones at 2026-04-05T00:58:57+01:00
Add Invariant (NoTypeShadowing) to Core
This commit addresses #26868, by adding
a new invariant (NoTypeShadowing) to Core.
See Note [No type-shadowing in Core] in GHC.Core
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8b5a5020 by Simon Peyton Jones at 2026-04-05T00:58:57+01:00
Major refactor of free-variable functions
For some time we have had two free-variable mechanims for types:
* The "FV" mechanism, embodied in GHC.Utils.FV, which worked OK, but
was fragile where eta-expansion was concerned.
* The TyCoFolder mechanism, using a one-shot EndoOS accumulator
I finally got tired of this and refactored the whole thing, thereby
addressing #27080. Now we have
* `GHC.Types.Var.FV`, which has a composable free-variable result type,
very much in the spirit of the old `FV`, but much more robust.
(It uses the "one shot trick".)
* GHC.Core.TyCo.FVs now has just one technology for free variables.
All this led to a lot of renaming.
There are couple of error-message changes. The change in T18451
makes an already-poor error message even more mysterious. But
it really needs a separate look.
We also now traverse the AST in a different order leading to a different
but still deterministic order for FVs and test output has been adjusted
accordingly.
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4bf040c6 by sheaf at 2026-04-05T14:56:29-04:00
Add utility pprTrace_ function
This function is useful for quick debugging, as it can be added to a
where clause to pretty-print debugging information:
fooBar x y
| cond = body1
| otherwise = body2
where
!_ = pprTrace_ "fooBar" $
vcat [ text "x:" <+> ppr x
, text "y:" <+> ppr y
, text "cond:" <+> ppr cond
]
- - - - -
502e6ffe by Andrew Lelechenko at 2026-04-07T04:47:21-04:00
base: improve error message for Data.Char.chr
As per https://github.com/haskell/core-libraries-committee/issues/384
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b21bd52e by Simon Peyton Jones at 2026-04-07T04:48:07-04:00
Refactor FunResCtxt a bit
Fixes #27154
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7fe84ea5 by Zubin Duggal at 2026-04-07T19:11:52+05:30
compiler: Warn when -finfo-table-map is used with -fllvm
These are currently not supported together.
Fixes #26435
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4a45a7da by Matthew Pickering at 2026-04-08T04:37:29-04:00
packaging: correctly propagate build/host/target to bindist configure script
At the moment the host and target which we will produce a compiler for
is fixed at the initial configure time. Therefore we need to persist
the choice made at this time into the installation bindist as well so we
look for the right tools, with the right prefixes at install time.
In the future, we want to provide a bit more control about what kind of
bindist we produce so the logic about what the host/target will have to
be written by hadrian rather than persisted by the configure script. In
particular with cross compilers we want to either build a normal stage 2
cross bindist or a stage 3 bindist, which creates a bindist which has a
native compiler for the target platform.
Fixes #21970
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
- - - - -
b0950df6 by Sven Tennie at 2026-04-08T04:37:29-04:00
Cross --host and --target no longer required for cross (#21970)
We set sane defaults in the configure script. Thus, these paramenters
aren't required any longer.
- - - - -
fef35216 by Sven Tennie at 2026-04-08T04:37:30-04:00
ci: Define USER_CONF_CC_OPTS_STAGE2 for aarch64/mingw
ghc-toolchain doesn't see $CONF_CC_OPTS_STAGE2 when the bindist gets
configured. So, the hack to override the compiler gets lost.
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8dd6f453 by Cheng Shao at 2026-04-08T04:38:11-04:00
ghci: use ShortByteString for LookupSymbol/LookupSymbolInDLL/LookupClosure messages
This patch refactors ghci to use `ShortByteString` for
`LookupSymbol`/`LookupSymbolInDLL`/`LookupClosure` messages as the
first part of #27147.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
371ef200 by Cheng Shao at 2026-04-08T04:38:11-04:00
ghci: use ShortByteString for MkCostCentres message
This patch refactors ghci to use `ShortByteString` for `MkCostCentres`
messages as a first part of #27147. This also considerably lowers the
memory overhead of breakpoints when cost center profiling is enabled.
-------------------------
Metric Decrease:
interpreter_steplocal
-------------------------
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
4a122bb6 by Phil Hazelden at 2026-04-08T20:49:42-04:00
Implement modifiers syntax.
The `%m` syntax of linear types is now accepted in more places, to allow
use by future extensions, though so far linear types is still the only
consumer.
This may break existing code where it
* Uses -XLinearTypes.
* Has code of the form `a %m -> b`, where `m` can't be inferred to be
kind Multiplicity.
The code can be fixed either by adding a kind annotation, or by setting
`-XLinearTypes -XNoModifiers`.
Proposal:
https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0370-m…
- - - - -
07267f79 by Zubin Duggal at 2026-04-08T20:50:25-04:00
hadrian: Don't include the package hash in the haddock directory
Since GHC 9.8 and hash_unit_ids, haddock urls have looked like`ghc-9.10.3/doc/html/libraries/base-4.20.2.0-39f9/**/*.html`
The inclusion of the hash makes it hard for downstream non-boot packages to properly link to these files, as the hash is not
part of a standard cabal substitution.
Since we only build one version of each package, we don't need the hash to disambiguate anything, we can just remove it.
Fixes #26635
- - - - -
0a83b95b by ARATA Mizuki at 2026-04-08T20:51:18-04:00
testsuite: Allow multiple ways to be run by setting multiple command-line options
This patch allows multiple `--test-way`s to take effect, like:
$ hadrian/build test --test-way=normal --test-way=llvm
Previously, only one way was run if the test speed was 'normal' or 'fast'.
Closes #26926
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
e841931c by Teo Camarasu at 2026-04-08T20:52:00-04:00
doc: improve eventlog-flush-interval flag documentation
We mention the performance cost and how this flag can be turned off.
Resolves #27056
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e332db25 by Teo Camarasu at 2026-04-08T20:52:01-04:00
docs/user_guide: fix typo
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5b82080a by Simon Jakobi at 2026-04-08T20:52:44-04:00
Fix -dsuppress-uniques for free variables in demand signatures
Before: Str=b{sXyZ->S}
With this patch: Str=b{S}
T13143.stderr is updated accordingly.
Fixes #27106.
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b7a084cc by Simon Jakobi at 2026-04-08T20:53:27-04:00
Documentation fixes for demand signature notation
Fixes #27115.
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59391132 by Simon Jakobi at 2026-04-08T20:54:08-04:00
Use upsert for non-deleting map updates
Some compiler functions were using `alter`, despite never removing
any entries: they only update an existing entry or insert a new one.
These functions are converted to using `upsert`:
alter :: (Maybe a -> Maybe a) -> Key -> Map a -> Map a
upsert :: (Maybe a -> a) -> Key -> Map a -> Map a
`upsert` variants are also added to APIs of the various Word64Map
wrapper types.
The precedent for this `upsert` operation is in the containers library:
see https://github.com/haskell/containers/pull/1145
Metrics: compile_time/bytes allocated
-------------------------------------
geo. mean: -0.1%
minimum: -0.5%
maximum: +0.0%
Resolves #27140.
- - - - -
da7e82f4 by Cheng Shao at 2026-04-08T20:54:49-04:00
testsuite: fix testsuite run for +ipe again
This patch makes the +ipe flavour transformer pass the entire
testsuite again by dropping stdout/stderr checks of certain tests that
are sensitive to stack layout changes with `+ipe`. Related: #26799.
- - - - -
b135a87d by Zubin Duggal at 2026-04-09T19:36:50+05:30
Bump directory submodule to 1.3.11.0 (unreleased)
- - - - -
3a291d07 by Zubin Duggal at 2026-04-09T19:36:50+05:30
Bump file-io submodule to 0.2.0
- - - - -
e0ab606d by Zubin Duggal at 2026-04-10T18:40:20+05:30
Release notes for GHC 10.0
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e08b9b34 by Zubin Duggal at 2026-04-10T18:40:20+05:30
Bump ghc-prim version to 0.14.0
- - - - -
a92aac6e by Zubin Duggal at 2026-04-10T18:40:20+05:30
Bump template-haskell to 2.25.0.0; update submodule exceptions for TH 2.25
- - - - -
f254d9e8 by Zubin Duggal at 2026-04-10T18:40:20+05:30
Bump GHC version to 10.0
- - - - -
6ce0368a by Zubin Duggal at 2026-04-10T18:40:28+05:30
Bump base to 4.23.0.0; update submodules for base 4.24 upper bound
- - - - -
702fb8a5 by Zubin Duggal at 2026-04-10T18:40:28+05:30
Bump GHC version to 10.1; update submodules template-haskell-lift and template-haskell-quasiquoter for ghc-internal 10.200
- - - - -
75df1ca4 by Zubin Duggal at 2026-04-10T18:40:28+05:30
Use changelog.d for release notes (#26002)
GHC now uses a fragment-based changelog workflow using a custom script adapted from https://codeberg.org/fgaz/changelog-d.
Contributors add a file in changelog.d/ for each user-facing change.
At release time, these are assembled into release notes for sphinx (in RST) format, using
the tool.
New hadrian `changelog` target to generate changelogs
CI job to validate changelog entries for MRs unless skipped with ~"no-changelog" label
Teach sphinx about ghc-mr: extlink to link to MRs
Remove `ghc-package-list` from sphinx, and implement it in changelog-d instead (Fixes #26476).
(cherry picked from commit 989c07249978f418dfde1353abfad453f024d61a)
- - - - -
585d7450 by Luite Stegeman at 2026-04-11T02:17:13-04:00
tc: discard warnings in tcUserStmt Plan C
We typecheck let_stmt twice, but we don't want the warnings twice!
see #26233
- - - - -
2df604e9 by Sylvain Henry at 2026-04-11T02:19:30-04:00
Introduce TargetInt to represent target's Int (#15973)
GHC was using host 'Int' in several places to represent values that
live in the target machine's 'Int' type. This is silently wrong when
cross-compiling from a 32-bit host to a 64-bit target: the host Int
is 32 bits while the target Int is 64 bits.
See Note [TargetInt] in GHC.Platform.
Also used the opportunity to make DynTag = Word8.
Fixes #15973
Co-Authored-By: Claude Sonnet 4.6 <noreply(a)anthropic.com>
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d419e972 by Luite Stegeman at 2026-04-13T15:16:04-04:00
Suppress desugaring warnings in the pattern match checker
Avoid duplicating warnings from the actual desugaring pass.
fixes #25996
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c5b80dd0 by Phil de Joux at 2026-04-13T15:16:51-04:00
Typo ~/ghc/arch-os-version/environments
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71462fff by Luite Stegeman at 2026-04-13T15:17:38-04:00
add changelog entry for #26233
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d1ddfd4b by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
Add test for #25636
The existing test behaviour of "T23146_liftedeq" changed because the
simplifier now does a bit more inlining. We can restore the previous bad
behavior by using an OPAQUE pragma.
This test doubles as a test for #25636 when run in ghci, so we add it as
such.
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b9df40ee by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
refactor: protoBCOName is always a Name
Simplifies the code by removing the unnecessary type argument to
ProtoBCO which was always 'Name'
- - - - -
5c2a179e by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
Allocate static constructors for bytecode
This commit adds support for static constructors when compiling and
linking ByteCode objects.
Top-level StgRhsCon get lowered to ProtoStaticCons rather than to
ProtoBCOs. A ProtoStaticCon gets allocated directly as a data con
application on the heap (using the new primop newConApp#).
Previously, we would allocate a ProtoBCO which, when evaluated, would
PACK and return the constructor.
A few more details are given in Note [Static constructors in Bytecode].
Secondly, this commit also fixes issue #25636 which was caused by
linking *unlifted* constructors in BCO instructions as
- (1) a thunk indexing the array of BCOs in a module
- (2) which evaluated to a BCO which still had to be evaluated to
return the unlifted constructor proper.
The (2) issue has been resolved by allocating the static constructors
directly. The (1) issue can be resolved by ensuring that we allocate all
unlifted top-level constructors eagerly, and leave the knot-tying for
the lifted BCOs and top-level constructors only.
The top-level unlifted constructors are never mutually recursive, so we
can allocate them all in one go as long as we do it in topological
order. Lifted fields of unlifted constructors can still be filled by the
knot-tied lifted variables since in those fields it is fine to keep
those thunks. See Note [Tying the knot in createBCOs] for more details.
Fixes #25636
-------------------------
Metric Decrease:
LinkableUsage01
-------------------------
- - - - -
cde47053 by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
Revert "StgToByteCode: Assert that PUSH_G'd values are lifted"
This reverts commit ec26c54d818e0cd328276196930313f66b780905.
Ever since f7a22c0f4e9ae0dc767115d4c53fddbd8372b777, we now do support
and will link top-level unlifted constructors into evaluated and
properly tagged values which we can reference with PUSH_G.
This assertion is no longer true and triggered a failure in T25636
- - - - -
c7a7e5b8 by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
refactor: Tag more remote Ptrs as RemotePtr
Pure refactor which improves the API of
- GHC.ByteCode.Linker
- GHC.Runtime.Interpreter
- GHC.Runtime.Interpreter.Types.SymbolCache
by using `RemotePtr` for more functions which used to return `Ptr`s that
could potentially be in a foreign process. E.g. `lookupIE`,
`lookupStaticPtr`, etc...
- - - - -
fc59494c by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
Add float# and subword tests for #25636
These tests cover that static constructors in bytecode work correctly
for Float# and subword values (Word8#, Word16#)
- - - - -
477f521b by Rodrigo Mesquita at 2026-04-14T18:41:12-04:00
test: Validate topoSort logic in createBCOs
This test validates that the topological sorting and ordering of the
unlifted constructors and lifted constructors in `createBCOs` is
correct.
See `Note [Tying the knot in createBCOs]` for why tying the knot for the
created BCOs is slightly difficult and why the topological sorting is
necessary.
This test fails when `let topoSortedObjs = topSortObjs objs` is
substituted by `let topoSortedObjs = zip [0..] objs`, thus witnessing
the toposort logic is correct and necessary.
The test calls the ghci `createBCOs` directly because it is currently
impossible to construct in Source Haskell a situation where a top-level
static unlifted constructor depends on another (we don't have top-level
unlifted constructors except for nullary constructors like `Leaf ::
(UTree :: UnliftedType)`).
This is another test for fix for #25636
- - - - -
2d9c30be by Simon Jakobi at 2026-04-14T18:42:00-04:00
Improve tests for `elem`
...in order to simplify the work on #27096.
* Improve T17752 by including the Core output in golden files, checking
both -O1 and -O2.
* Add tests for fusion and no-fusion cases.
Fixes #27101.
- - - - -
2dadf3b0 by sheaf at 2026-04-16T13:28:39-04:00
Simplify mkTick
This commit simplifies 'GHC.Core.Utils.mkTick', removing the
accumulating parameter 'rest' which was suspiciously treating a bunch of
different ticks as a group, and moving the group as a whole around the
AST, ignoring that the ticks in the group might have different placement
properties.
The most important change is that we revert the logic (added in 85b0aae2)
that allowed ticks to be placed around coercions, which caused serious
issues (e.g. #27121). It was just a mistake, as it doesn't make sense
to put a tick around a coercion.
Also adds Note [Pushing SCCs inwards] which clarifies the logic for
pushing SCCs into lambdas, constructor applications, and dropping SCCs
around non-function variables (in particular the treatment of splittable
ticks).
A few other changes are also implemented:
- simplify 'can_split' predicate (no functional change)
- combine profiling ticks into one when possible
Fixes #26878, #26941 and #27121
Co-authored-by: simonpj <simon.peytonjones(a)gmail.com>
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a0d6f1f4 by Simon Jakobi at 2026-04-16T13:29:28-04:00
Add regression test for #9074
Closes #9074.
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d178ee89 by Sylvain Henry at 2026-04-16T13:30:25-04:00
Add changelog for #15973
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e8a196c6 by sheaf at 2026-04-16T13:31:19-04:00
Deal with 'noSpec' in 'coreExprToPmLit'
This commit makes two separate changes relating to
'GHC.HsToCore.Pmc.Solver.Types.coreExprAsPmLit':
1. Commit 7124e4ad mistakenly marked deferred errors as non-canonical,
which led to the introduction of 'nospec' wrappers in the
generated Core. This reverts that accident by declaring deferred
errors as being canonical, avoiding spurious 'nospec' wrapping.
2. Look through magic identity-like Ids such as 'nospec', 'inline' and
'lazy' in 'coreExprAsPmLit', just like Core Prep does.
There might genuinely be incoherent evidence, but that shouldn't
obstruct the pattern match checker. See test T27124a.
Fixes #25926 #27124
-------------------------
Metric Decrease:
T3294
-------------------------
- - - - -
8cb99552 by Sylvain Henry at 2026-04-16T19:22:43-04:00
hadrian: warn when package index is missing (#16484)
Since cabal-install 3.0 we can query the path of remote-repo-cache and
check if hackage package index is present.
Fixes #16484
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d6ce7477 by Richard Eisenberg at 2026-04-16T19:23:25-04:00
Teach hadrian to --skip-test.
Fixes #27188.
This adds the --skip-test flag to `hadrian build`, as documented in the
patch.
- - - - -
7666f4a9 by Fendor at 2026-04-17T22:29:51-04:00
Migrate `ghc-pkg` to use `OsPath` and `file-io`
`ghc-pkg` should use UNC paths as much as possible to avoid MAX_PATH
issues on windows.
`file-io` uses UNC Paths by default on windows, ensuring we use the
correct APIs and that we finally are no longer plagued by MAX_PATH
issues in CI and private machines.
On top of it, the higher correctness of `OsPath` is appreciated in this
small codebase. Also, we improve memory usage very slightly, due to the
more efficient memory representation of `OsPath` over `FilePath`
Adds `ghc-pkg` regression test for MAX_PATH on windows
Make sure `ghc-pkg` behaves as expected when long paths (> 255) are
involved on windows.
Let's generate a testcase where we can actually observe that `ghc-pkg`
behaves as epxected.
See the documentation for windows on Maximum Path Length Limitation:
* `https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation`
Adds changelog entry for long path support in ghc-pkg.
- - - - -
78434e8c by Simon Peyton Jones at 2026-04-17T22:30:38-04:00
Kill off the substitution in Lint
Now that we have invariant (NoTypeShadowing) we no longer
need Lint to carry an ambient substitution. This makes it
simpler and faster. A really worthwhile refactor.
There are some knock-on effects
* Linting join points after worker/wrapper. See
Note [Join points and beta redexes]
* Running a type substitution after the desugarer.
See Note [Substituting type-lets] in
the new module GHC.Core.SubstTypeLets
Implements #27078
Most perf tests don't use Lint so we won't see a perf incresae.
But T1969, which uses -O0 and Lint, gets 1.3% worse because it has
to run the SubstTypeLets pass which is a somewhat expensive no-op
Overall though compile-time allocations are down 0.1%.
Metric Increase:
T1969
- - - - -
86ca6c2c by mangoiv at 2026-04-17T22:31:22-04:00
testsuite: inline elemCoreTest
Some weird (probably python scoping) rule caused elemCoreTest, a regex
being out of scope on ubuntu, presumably because of a newer python version.
This patch just inlines the regex, which fixes the issue.
Fixes #27193
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72d6dc74 by aparker at 2026-04-20T20:15:44-04:00
NCG: Implement constant folding for vector simd ops (Issue #25030)
- - - - -
b9cab907 by sheaf at 2026-04-20T20:15:44-04:00
Mark some SIMD tests as broken on i386 optllvm
As seen in #25498, several SIMD tests are broken on i386 in the optllvm
way. This commit marks them as "expect_broken".
- - - - -
76528cc3 by Wolfgang Jeltsch at 2026-04-20T20:16:25-04:00
Move most of the `System.IO` implementation into `base`
This involves a rewrite of the `combine` helper function to avoid the
use of `last`, which would now be flagged as an error.
Metric Decrease:
LinkableUsage01
T3294
Metric Increase:
T12227
T12707
T5642
- - - - -
04d143c0 by Luite Stegeman at 2026-04-21T14:05:33-04:00
rts: add a few missing i386 relocations in the rts linker
- - - - -
014087e7 by Luite Stegeman at 2026-04-21T14:05:34-04:00
CodeOutput: Fix finalizers on multiple platforms
- ELF platforms: emit .fini_array section
- wasm32/Darwin: emit initializer with __cxa_atexit call
- Windows: use -Wl,--whole-archive to prevent dropping finalizer symbols
- rts linker: fix crash/assertion failure unloading objects with finalizers
fixes #27072
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915bba6f by Simon Jakobi at 2026-04-21T14:06:16-04:00
Add regression test for #10531
Closes #10531.
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86a646a6 by Andreas Klebinger at 2026-04-22T13:00:05-04:00
Revert use of generic instances for compiler time perf reasons.
Revert "Derive Semigroup/Monoid for instances believed could be derived in #25871"
This reverts commit 11a04cbb221cc404fe00d65d7c951558ede4caa9.
Revert "add Ghc.Data.Pair deriving"
This reverts commit 15d9ce449e1be8c01b89fd39bdf1e700ea7d1dce.
- - - - -
bc9ee1cf by Wen Kokke at 2026-04-22T13:00:51-04:00
hadrian: Fix docs to remove static flavour
In 638f6548, the static flavour was turned into into the fully_static
flavour transformer. However, this commit did not update flavours.md.
- - - - -
cc9cc6d5 by Cheng Shao at 2026-04-23T09:40:46+00:00
configure: bump LlvmMaxVersion to 23
This patch bumps `LlvmMaxVersion` to 23 to support LLVM 22.x releases.
- - - - -
2ea7ef8e by Cheng Shao at 2026-04-23T09:46:26+00:00
changelog: add llvm 22.x support
- - - - -
5574ee10 by Cheng Shao at 2026-04-24T08:24:30-04:00
compiler: avoid unused temporary `appendFS` operands
This patch fixes unused temporary `appendFS` operands in the codebase
that are retained in the `FastString` table after concatenation.
Rewrite rules are added so that if an operand is
`fsLit`/`mkFastString`, the `appendFS` application is rewritten to
append the `ShortByteString` operands first. The patch also fixes
`sconcat` behavior to align with `mconcat` for the same reason. Fixes #27205.
- - - - -
4ed78760 by mangoiv at 2026-04-24T08:25:13-04:00
contributing: adjust MR template to be less verbose
- MR template only shows text that is relevant for submissiong
- MR template was rewritten so it's readable from a user's and reviewer's
perspective
Resolves #27165
Co-Authored-By: @sheaf
- - - - -
87db83e2 by Cheng Shao at 2026-04-24T14:37:21-04:00
ci: bump freebsd boot ghc to 9.10.3
This commit bumps freebsd boot ghc to 9.10.3 to align with other
platforms and prevent outdated boot libs in boot ghc to block the
freebsd job.
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17e3a0b7 by Cheng Shao at 2026-04-24T14:37:21-04:00
compiler: improve Binary instance of Array
This patch improves the `Binary` instance of `Array`:
- We no longer allocate intermediate lists. When serializing an
`Array`, we iterate over the elements directly; when deserializing
it, we allocate the result `Array` and fill it in a loop.
- Now we only serialize the array bounds tuple; the length field is
not needed.
Closes #27109.
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2d30f7d3 by sheaf at 2026-04-24T14:38:23-04:00
Vendor mini-QuickCheck for testsuite
This commit extracts the vendored QuickCheck implementation from the
foundation testsuite to make it more broadly available in the GHC
testsuite, and makes use of it in the simd006 test (which also used
a vendored QuickCheck implementation).
On the way, we update the linear congruential generator to avoid the
shortcoming of only generating 31 bit large numbers.
Fixes #25990 and #25969.
- - - - -
1350271b by sheaf at 2026-04-27T09:32:53-04:00
Ensure TcM plugins are only initialised once
This commit ensures we keep TcM plugins (typechecker plugins,
defaulting plugins and hole fit plugins) running all the way through
desugaring, instead of stopping them at the end of typechecking.
To do this, the "stop" actions of TcPlugin and DefaultingPlugin are
split into two: one for the "post-typecheck" action, and one for the
final shutdown action (after desugaring).
This allows the plugins to be invoked by the pattern match checker
(during desugaring) without having to be repeatedly re-initialised and
stopped, fixing #26839.
In the process, this commit modifies 'initTc' and 'initTcInteractive',
adding an extra argument that describes whether to start/stop the 'TcM'
plugins.
See Note [Stop TcM plugins after desugaring] for an overview.
- - - - -
42549222 by sheaf at 2026-04-27T09:33:50-04:00
Hadrian: add --keep-response-files
This commit adds a Hadrian flag that allows response files to be
retained. This is useful for debugging a failing Hadrian command line.
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40564e8d by sheaf at 2026-04-27T09:34:46-04:00
hadrian/build-cabal.bat: fix build on Windows
Commit 8cb99552f6 introduced a warning for a missing package index.
However, the logic was faulty on Windows: the piping was broken, and
"remote-repo-cache:" was being interpreted as a (malformed) drive letter,
leading to the error:
The filename, directory name, or volume label syntax is incorrect.
This commit fixes that by using a temporary file instead of piping.
- - - - -
14bc71e4 by Sven Tennie at 2026-04-28T13:22:47-04:00
ghc: Distinguish between having an interpreter and having an internal one
Actually, these are related but different things:
- ghc can run an interpreter (either internal or external)
- ghc is compiled with an internal interpreter
Splitting the logic solves compiler warnings and expresses the intent
better.
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df691563 by Vladislav Zavialov at 2026-04-28T13:23:29-04:00
Refactor HsWildCardTy to use HoleKind (#27111)
The payload of this patch is that the extension fields of HsWildCardTy
and HsHole now match:
type instance XWildCardTy Ghc{Ps,Rn} = HoleKind
type instance XHole Ghc{Ps,Rn} = HoleKind
This is progress towards unification of HsExpr and HsType.
Test case: T25121_status
In addition to that, exact-printing of infix holes is fixed.
Test case: PprInfixHole
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f3485446 by fendor at 2026-04-28T13:24:12-04:00
Expose startupHpc as an rts symbol
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28f07d70 by fendor at 2026-04-28T13:24:12-04:00
Make HPC work with bytecode interpreter
Add support to generate .tix files from bytecode objects and the
bytecode interpreter.
Conceptually, we insert HPC ticks into the bytecode similar to how we insert
breakpoints.
HPC and breakpoints do not share the same tick array but we use a separate
tick-array for hpc/breakpoint ticks during bytecode generation.
We teach the bytecode interpreter to handle hpc ticks.
The implementation is quite trivial, simply increment the counter in the
global hpc_ticks array for the respective module.
This hpc_ticks array is generated as part of the `CStub`, so we can rely
on it existing.
A tricky bit is "registering" a bytecode object for HPC instrumentation.
In the compiled case, this is achieved via CStub and initializer/finalizers
`.init` sections which are called when the executable is run.
After the initializers have been invoked, which is before `hs_init_ghc`,
we then call `startup_hpc` in `hs_init_ghc` iff any modules were "registered"
for hpc instrumentation via `hs_hpc_module`.
Since bytecode objects are loaded after starting up GHCi, this workflow
doesn't work for supporting `hpc` and the `hpc` run-time is never
started, even if a module is added for instrumentation.
We fix this issue by employing the same technique as is for `SptEntry`s:
* We introduce a new field to `CompiledByteCode`, called `ByteCodeHpcInfo`
which contains enough information to call `hs_hpc_module`, allowing us to
register the module for `hpc` instrumentation`.
* After registering the module, we unconditionally call `startupHpc`, to make
sure the .tix file is written.
Calling `startupHpc` multiple times is safe.
Calling `hs_hpc_module` multiple times for the same module is also safe.
If we didn't register the hpc module in this way, evaluating a bytecode object
instrumented with `-fhpc` without registering it in the `hpc` run-time will
simply not generate any `.tix` files for this bytecode object.
However, this shouldn't happen if everything is set up correctly.
Closes #27036
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950879f0 by Vladislav Zavialov at 2026-04-28T13:24:55-04:00
Move NamespaceSpecifier from x-fields into the AST proper (#26678)
This refactoring moves NamespaceSpecifier out of extension fields and into the
AST proper, as it is part of the user-written source, and is not pass-specific.
Summary of changes:
* Move NamespaceSpecifier from GHC/Hs/Basic.hs to Language/Haskell/Syntax/ImpExp.hs
and parameterise it by the compiler pass, creating the necessary extension points
* Move NamespaceSpecifier out of XFixitySig into FixitySig
* Move NamespaceSpecifier out of XIEThingAll (IEThingAllExt) into IEThingAll
* Move NamespaceSpecifier out of XIEWholeNamespace (IEWholeNamespaceExt) into IEWholeNamespace
This is a pure refactoring with no change in behaviour.
- - - - -
9797052b by Simon Peyton Jones at 2026-04-28T13:25:37-04:00
Fix assertion check in checkResultTy
As #27210 shows, the assertion was a little bit too eager.
I refactored a bit by moving some code from GHC.Tc.Gen.App
to GHC.Tc.Utils.Unify; see the new function tcSubTypeApp,
which replaces tcSubTypeDS
- - - - -
9f85f034 by Duncan Coutts at 2026-04-30T04:52:42-04:00
Make cmm 'import "package" name;' syntax use consistent label types
There is a little-used syntactic form in cmm imports:
import "package" foo;
Which means to import foo from the given package (unit id, specified as
a string). This syntax is somewhat reminiscent of GHC's package import
extension.
This syntax form is not used in the rts cmm code, nor any of the boot
libraries. It may not be used at all. Unclear.
Change the kind of CLabel this syntax generates to be consistent with
the others. The other cmm imports use ForeignLabel with
ForeignLabelInExternalPackage. For some reason this form was using
CmmLabel. Change that to also be ForeignLabel but with
ForeignLabelInPackage. This specifies a specific package, rather
than an unnamed external package.
- - - - -
a811f68f by Duncan Coutts at 2026-04-30T04:52:42-04:00
Change default cmm import statements to be internal
Previously a cmm statement like:
import foo;
meant to expect the symbol from a different shared library than the
current one.
Now it means to expect the symbol from the same shared library as the
current one. We'll add explicit syntax to indicate that it's a foreign
import. Most existing uses are in fact intenal (rts to rts), so few
imports will need to be annotated foreign. Examples would include cmm
code in libraries (other than the rts) that need to access RTS APIs.
In practice, this makes no difference whatsoever at the moment on any
platform other than windows (where building Haskell libs as shared libs
does not fully work yet), since the 'labelDynamic' treats all such
labels as foreign, irrespective of the foreign label source.
- - - - -
17fe5d1d by Duncan Coutts at 2026-04-30T04:52:42-04:00
Add cmm import syntax 'import DATA foo;' as better name for CLOSURE
The existing syntax is:
import CLOSURE foo;
The new syntax is
import DATA foo;
This means to interpret the symbol foo as refering to data (i.e. a
global constant or variable) rather than to code (a function). The
historical syntax for this uses CLOSURE, which is rather misleading.
Presumably this was done to avoid introducing new reserved words.
Be less squemish about new reserved words and add DATA and use that.
Keep the existing CLOSURE syntax as an alias for compatibility.
- - - - -
3a530d68 by Duncan Coutts at 2026-04-30T04:52:42-04:00
Add cmm 'import extern name;' syntax
Since the default for cmm imports is now for symbols within the same
shared object, we need a way to indicate we want a symbol from an
external shared object:
import extern foo; -- for a function
import extern DATA foo; -- for data
This adds a new reserved word 'extern'.
We don't expect to have to use this much. Most cmm imports are
intra-DSO.
This makes no difference currently on ELF and MachO platforms, but does
make a difference to the linking conventions on PE (Windows).
In future it's plausible we could take make distinctions on ELF or
MachO, so it's worth trying to get it right. Windows can be the guinea
pig.
- - - - -
2b8e44c7 by Duncan Coutts at 2026-04-30T04:52:42-04:00
Add cmm syntax 'import "package" DATA foo;' for completeness
We already have:
import DATA foo; -- for data imports
import "package" foo; -- for imports from a given unitid
There's no reason not to have both at once:
import "package" DATA foo;
So add that.
- - - - -
ee05e5cc by Duncan Coutts at 2026-04-30T04:52:42-04:00
Improve the commentary for the cmm import grammar.
AFAIK, this is the only place where GHC-style Cmm syntax is documented.
- - - - -
b35946ad by Duncan Coutts at 2026-04-30T04:52:42-04:00
Add a changelog.d entry for the .cmm import syntax changes
- - - - -
d59b7c71 by Wolfgang Jeltsch at 2026-04-30T04:53:25-04:00
Move code that uses `GHC.Internal.Text.Read` into `base`
This contribution serves to remove all dependencies on
`GHC.Internal.Text.Read` from within `ghc-internal`, so that the
implementation of `Text.Read` and ultimately more reading-related code
can be moved to `base` as well.
The following things are moved from `ghc-internal` to `base`:
* I/O-related `Read` instances
* Most of the `Numeric` implementation
* The instance `Read ByteOrder`
* The `parseVersion` operation
* The `readConstr` operation
Metric Increase:
LinkableUsage01
T9198
T12425
T13035
T13820
T18140
- - - - -
5bd6a964 by Rodrigo Mesquita at 2026-04-30T04:54:08-04:00
New rts Message to {set,unset} TSO flags
This commit introduces stg_MSG_SET_TSO_FLAG_info and
stg_MSG_UNSET_TSO_FLAG_info, which allows setting flags of a TSO other
than yourself.
This is especially useful/necessary to set breakpoints and toggle
breakpoints of different threads, which is needed to safely implement
features like pausing, toggling step-out, toggling step-in per thread,
etc.
Fixes #27131
-------------------------
Metric Decrease:
T3294
-------------------------
- - - - -
ce97fd3e by Rodrigo Mesquita at 2026-04-30T04:54:08-04:00
test: Add test setting another TSO's flags
Introduces a test that runs on two capabilities. The main thread running
on Capability 0 sets the flags on a TSO running on Capability 1.
The TSO from Capability 1 itself checks whether its flags were set and
reports that back.
This validates that the RTS messages for setting TSO flags work, even if
it doesn't test a harsher scenario with race conditions to exercise why
the message passing is necessary for safely setting another TSO's flags.
Part of #27131
- - - - -
a4ff6315 by David Eichmann at 2026-04-30T04:54:51-04:00
Hadrian: withResponseFile outputs response file when verbodity is Verbose
At the Verbose verbosity, shake will display full commandlines. With the
use of response files, the full command is hidden. That makes it hard to run
the command manually. This commit outputs the contents of the response
file so that that full command can be recreated and also hints at the
use of the --keep-response-files hadrian flag.
- - - - -
cd732ee3 by Duncan Coutts at 2026-04-30T04:54:51-04:00
Use response files for hadrian linking with ghc (support long command lines)
In future support for windows dynamic linking, we expect long command
lines for linking dll files with ghc. Experiments with dynamic linking the
ghc-internal library yielded a link command well over 32kb. We did not
encounter this before for static libs, since we already use ar's @file
feature (if available, which it is for the llvm toolchain).
Co-authored-by: David Eichmann <davide(a)well-typed.com>
- - - - -
3d41368f by Andreas Klebinger at 2026-04-30T04:55:32-04:00
Split GHC.Driver.Main.hs up into multiple components.
This commit splits GHC.Driver.Main into four components:
* GHC.Driver.Main.Compile
* GHC.Driver.Main.Hsc
* GHC.Driver.Main.Interactive
* GHC.Driver.Main.Passes
We might improve that separation further in the future but this should
hopefully make it easier to reason about and work with this part of the
code.
- - - - -
2128ba85 by Cheng Shao at 2026-04-30T04:56:14-04:00
compiler: avoid unique OccNames for internal Names in bytecode objects
This patch improves bytecode object serialization logic by avoiding
the construction of unique `OccName`s when serializing/deserializing
internal `Name`s. Closes #27213.
-------------------------
Metric Decrease:
LinkableUsage01
-------------------------
- - - - -
e16854c3 by Vladislav Zavialov at 2026-04-30T04:56:57-04:00
Replace GHC 9.16 references with GHC 10.0
- - - - -
39141343 by Alice Rixte at 2026-05-01T14:09:32+02:00
Add Bounded instances for Double, Float, CDouble and CFloat
- - - - -
5c4c3bf4 by Sylvain Henry at 2026-05-02T03:39:28-04:00
testsuite: fix flaky foundation Divisible / mulIntMayOflo# tests (#27222)
Since the LCG was widened to 64 bits and the seed randomised per CI run
(commit 2d30f7d3400 "Vendor mini-QuickCheck for testsuite"), two latent
bugs in the foundation test surface stochastically:
* The Divisible property `(x `div` y) * y + (x `mod` y) == x` raises
ArithException(Overflow) when (a, b) = (minBound, -1) for fixed-width
signed Integral types. Split testNumber/testDivisible into Bounded and
unbounded variants and skip just that one pair, gated by
`(minBound :: a) < 0` so unsigned types lose no coverage.
* The `mulIntMayOflo#` test compared raw Int# bit-for-bit, but the primop
is only specified to return 0/non-zero -- the exact non-zero indicator
legitimately differs between backends and inlining choices. Add a
dedicated `testPrimopMayOflo` helper that only compares zero / non-zero.
Also fix the long-standing typo "Dividible" -> "Divisible" in identifiers.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
e242ce4f by Sylvain Henry at 2026-05-02T03:39:28-04:00
testsuite: catch and display exceptions in MiniQuickCheck
Exceptions raised while evaluating a property are now caught and reported
as a normal failure (with arguments and seed), instead of aborting the
test.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
3b75cccd by fendor at 2026-05-02T03:40:14-04:00
Fix name of Note [Structure of dep_boot_mods]
- - - - -
9a9ae4df by Duncan Coutts at 2026-05-05T14:44:37-04:00
Use __attribute__((dllimport)) for external RTS symbol declarations
This is needed to be hygenic about DLL symbol imports and exports.
The attribute is ignored on platforms other than Windows.
Use of the attribute however means that external data symbols do not
have a compile-time constant address (they are loaded using an
indirection). This means we have to adjust the rtsSyms initial linker
table so that it is a local constant in a function, rather than a global
constant. We now define it within a function that pre-populates the
symbol table with the RTS symbols.
- - - - -
2ad3e01e by Duncan Coutts at 2026-05-05T14:44:37-04:00
Fix the rts linker declarations for a few data symbols
and ensure that the (windows only) rts_IOManagerIsWin32Native data
symbol is marked as externally visible.
- - - - -
8ff4fdb5 by David Eichmann at 2026-05-05T14:44:37-04:00
Hadrian: Disable runtime pseudo relocations for RTS on windows hosts
- - - - -
96974723 by Teo Camarasu at 2026-05-05T14:45:20-04:00
ghci/TH: refactor to use IORef QState
This is a pure refactor and shouldn't modify semantics at all
- - - - -
eff6bfaf by Teo Camarasu at 2026-05-05T14:45:20-04:00
iserv: recover/getQ/putQ should behave same as internal interpreter
The internal and external interpreter should behave the same when
handling `recover`, the exeception recovery method of Q.
In practice, they diverge. In case of failure, the internal interpreter
only restores error message state to before the computation, wheras the
external interperter restores error message state *and* the state of putQ/getQ.
As far as I can tell this is a simple mistake in the implementation.
Note [TH recover with -fexternal-interpreter] describes the correct
behaviour but the implementation doesn't mirror this.
This change restores the correct behaviour by keeping the effects of
putQ in the erroring computation.
This is a breaking change since it modifies the behaviour of programs
that rely on recover ignoring putQ from failling computations when used
with the external interpreter. Although I highly doubt anyone relies on
this behaviour.
This divergence was first introduced in d00c308633fe7d216d31a1087e00e63532d87d6d.
As far as I can tell this was unintentional and tha commit was trying to solve a different bug.
Resolves #27022
- - - - -
1cb1d672 by Wen Kokke at 2026-05-06T09:53:40-04:00
rts: Add dynamic trace flags API
This commit adds an API to the RTS (exposed via Rts.h) that allows users to dynamically change the trace flags.
Prior to this commit, users were able to stop and start the profiling and heap profiling timers (via startProfTimer/stopProfTimer and startHeapProfTimer/stopHeapProfTimer).
This extends that functionality to also cover the core event types.
The getTraceFlag/setTraceFlag functions read and write the values of the trace flag cache, which is allocated by Trace.c, rather than modifying the members of RtsFlags.TraceFlags.
This is done under the assumption that the members of RtsFlags should not be modified after RTS initialisation.
Consequently, if the user modifies the trace flags using setTraceFlag, the object returned by getTraceFlags (from base) will not reflect these changes.
The trace flags are not protected by locks of any sort.
Hence, these functions are not thread-safe.
However, the trace flags are not modified by the RTS after initialisation, only read, so the race conditions introduced by one user modifying them are most likely benign.
This PR also puts the trace flag cache in a single global struct, as opposed to a collection of global variables, and changes the types of the individual flags from uint8_t to bool, as these have the same size on both Clang and GCC and are a better semantic match.
Prior to the change to uint8_t, they had type int, see 42c47cd6.
Even with its deprecation in C23, I don't think there should be any issue depending on stdbool.h.
The TRACE_X macros are redefined to access the global struct, with values cast to const bool to ensure they are read-only.
- - - - -
9d54dc94 by Wen Kokke at 2026-05-06T09:53:40-04:00
rts: Ensure TRACE_X values are used in place of RtsFlags.TraceFlags.X
- - - - -
418d737b by Wen Kokke at 2026-05-06T09:53:40-04:00
rts: Fix nonmoving-GC tracing
The current nonmoving-GC tracing functions were written in a different
style from the other tracing functions. They were directly implemented
as, e.g., a traceConcMarkEnd function that called postConcMarkEnd.
The other tracing functions are implemented as, e.g., traceThreadLabel_,
a function that posts the thread label event, and traceThreadLabel, a
macro that checks whether TRACE_scheduler is set. This commit fixes that
implementation, and ensures that the nonmoving-GC tracing functions only
emit events if nonmoving-GC tracing is enabled.
- - - - -
99f4afa4 by Wen Kokke at 2026-05-06T09:53:40-04:00
rts: Add SymI_HasProto for get/setTraceFlag
- - - - -
7e9eb8b9 by Wen Kokke at 2026-05-06T09:53:40-04:00
rts: Add SymI_HasProto for start/endEventLogging
- - - - -
3a3045fb by Wen Kokke at 2026-05-06T09:53:41-04:00
rts: Add changelog entry
- - - - -
a3b339a4 by Teo Camarasu at 2026-05-06T09:54:25-04:00
interface-stability/base: don't distinguish ws-32
The interface of base is identical when the Word size is 32bits.
Therefore, there is no need to have another file for this case.
So, we delete it.
Step towards: #26752
- - - - -
eb922183 by Duncan Coutts at 2026-05-07T14:28:50+01:00
Add a rts posix FdWakup utility module
This will be used to implement wakeupIOManager for in-RTS I/O managers.
It provides a notification/wakeup mechanism using FDs, suitable for
situations when a thread is blocked on a set of fds anyway. It uses the
classic self-pipe trick, or equivalently eventfd on supported platforms.
This will initially be used to implement prompt interrupt or shutdown of
the posix ticker thread.
- - - - -
01b0e233 by Duncan Coutts at 2026-05-07T14:28:50+01:00
Add prompt shutdown to the pthread ticker implementation.
The Linux timerfd ticker monitors a pipe which is used by exitTicker to
ensure a prompt wakeup and shutdown. The pthread ticker lacked this and
so would only exit at the next ticker wakeup (10ms by default).
This patch adds the same mechanism to the pthread ticker.
This changes the pthread ticker from waiting by using nanosleep() to
waiting using either ppoll() or select(), so that it can wait on both
a time and a file descriptor. On Linux at least, a test program to
compare the timing jitter of these APIs shows that using nanpsleep,
ppoll or select makes no statistical difference to the maximum or
average jitter.
This is a step towards unifying the posix ticker implementations, so
that we can have just one portable one (albeit with some limited cpp).
It is also a step towards using the ticker as part of a more general
implementation of wakeUpRts, since this will require a method to wake
the rts from a signal handler context (ctl-c handler).
- - - - -
bc41d646 by Duncan Coutts at 2026-05-07T14:28:50+01:00
Update ticker header commentary
It was antique and didn't apply even to the previous implementation, and
certainly not to the updated one.
- - - - -
4ed9a386 by Duncan Coutts at 2026-05-07T14:28:50+01:00
Remove the timerfd-based ticker implementation
There does not appear to be any remaining advantage on Linux to using
the timerfd ticker implementation over the portable one (using ppoll on
Linux for precise timing).
The eventfd implementation was originally added at a time when Linux was
still using a signal based implementation. So it made sense at the time.
See (closed) issue #10840.
- - - - -
97504fa6 by Duncan Coutts at 2026-05-07T14:28:50+01:00
Consolidate to a single posix ticker implementation
Previously we had four implementations, two using signals and two using
threads. Having just one should make behaviour more consistent between
platforms, and should make maintenance easier.
- - - - -
1e60023b by Facundo Domínguez at 2026-05-07T18:01:16-04:00
Generalize so_inline to specify which bindings should be preserved
This commit generalizes the so_inline option of the simple optimizer
so we can indicate with a predicate the specific bindings that should
be kept.
This feature is important for the LiquidHaskell plugin, which relies on the
simple optimizer to make core programs easier to read, but needs to preserve
bindings that are relevant for verification.
See https://gitlab.haskell.org/ghc/ghc/-/issues/24386 for the full discussion.
- - - - -
44cf9cd7 by Wolfgang Jeltsch at 2026-05-12T09:48:18-04:00
Move the `Text.Read` implementation into `base`
- - - - -
4ac3f7d6 by Vladislav Zavialov at 2026-05-12T09:49:03-04:00
EPA: Use AnnParen for tuples and sums
Summary of changes
* Do not use AnnParen in XListTy, replace it with EpToken "[" and "]"
* Specialise AnnParen to tuple/sums by dropping the AnnParensSquare
and keeping only AnnParens and AnnParensHash
* Use AnnParen in XExplicitTuple
* Use AnnParen in XExplicitTupleTy
* Use AnnParen in XTuplePat
* Use AnnParen in XExplicitSum (via AnnExplicitSum)
* Use AnnParen in XSumPat (via EpAnnSumPat)
This is a refactoring with no user-facing changes.
- - - - -
1bdcddec by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add minimal dlltool support to ghc-toolchain
The dlltool is a tool that can create dll import libraries from .def
files. These .def files list the exported symbols of dlls. Its somewhat
like gnu linker scripts, but more limited.
We will need dlltool to build the rts and ghc-internal libraries as DLLs
on Windows. The rts and ghc-internal libraries have a recursive
dependency on each other. Import libraries can be used to resolve
recursive dependencies between dlls. We will use an import library for
the rts when linking the ghc-internal library.
- - - - -
f7fc3770 by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add minimal dlltool support into ./configure
Find dlltool, and hopefully support finding it within the bundled llvm
toolchain on windows.
- - - - -
e4e22bfb by Duncan Coutts at 2026-05-12T09:49:48-04:00
Update the default host and target files for dlltool support
- - - - -
5666c8f9 by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add dlltool as a hadrian builder
Optional except on windows.
- - - - -
5e14fe3f by Duncan Coutts at 2026-05-12T09:49:48-04:00
Update and generate libHSghc-internal.def from .def.in file
The only symbol that the rts imports from the ghc-internal package now
is init_ghc_hs_iface. So the rts only needs an import lib that defines
that one symbol.
Also, remove the libHSghc-prim.def because it is redundant. The rts no
longer imports anything from ghc-prim.
Keep libHSffi.def for now. We may yet need it once it is clear how
libffi is going to be built/used for ghc.
- - - - -
3d91e4a6 by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add rule to build libHSghc-internal.dll.a and link into the rts
On windows only, with dynamic linking.
This is needed because on windows, all symbols in dlls must be resolved.
No dangling symbols allowed. References to external symbols must be
explicit. We resolve this with an import library. We create an import
library for ghc-internal, a .dll.a file. This is a static archive
containing .o files that define the symbols we need, and crucially have
".idata" sections that specifies the symbols the dll imports and from
where.
Note that we do not install this libHSghc-internal.dll.a, and it does
not need to list all the symbols exported by that package. We create a
special purpose import lib and only use it when linking the rts dll, so
it only has to list the symbols that the rts uses from ghc-internal
(which is exactly one symbol: init_ghc_hs_iface).
- - - - -
c8dae539 by Alice Rixte at 2026-05-12T09:50:52-04:00
Script for downloading and copying `base-exports` file
- - - - -
5fab2238 by Wolfgang Jeltsch at 2026-05-12T21:24:27+03:00
Introduce a cache of home module name providers
This contribution introduces to the module graph a cache that maps home
module names to sets of units providing them and changes the finder to
use that cache. This is a performance optimization, especially for
multi-home-unit builds.
The particular changes are as follows:
* In `GHC.Unit.Module.Graph`, `ModuleGraph` is extended with a new
field `mg_home_module_name_providers_map`, exposed as
`mgHomeModuleNameProvidersMap`. This is a cache that assigns to each
home module name the set of IDs of home units that define it.
Operations that construct module graphs are updated such that this
cache stays synchronized.
* In `GHC.Unit.Finder`, `findImportedModule` is changed to pull
`mgHomeModuleNameProvidersMap` from `hsc_mod_graph` and pass it to
`findImportedModuleNoHsc`, which now does not search home units in
arbitrary order but prioritizes those units that the cache mentions
as potential providers of the requested module.
In addition, this contribution adds variants of the two multi-component
compiler performance tests that use 100 units instead of 20, because
with just 20 units the benefits from caching of home module name
providers are still negligible.
The following table shows the total time needed for running both
multi-component tests before and after this contribution and with
different numbers of units:
| # of units | Before | After |
|-----------:|-------:|------:|
| 20 | 0:12 | 0:12 |
| 100 | 0:47 | 0:42 |
| 200 | 3:05 | 2:08 |
Note that there seems to be a general overhead of 12 seconds that is not
attributable to the actual tests, so that the real running times should
be 12 seconds smaller than shown above.
Resolves #27055.
Metric Decrease:
MultiComponentModules
MultiComponentModulesRecomp
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
Co-authored-by: Fendor <fendor(a)posteo.de>
- - - - -
38b76b2f by Cheng Shao at 2026-05-13T17:48:48-04:00
testsuite: mark T22159 as fragile
This patch marks T22159 as fragile on Windows for issue described in #27248.
Before we get to the bottom of those failures, this unblocks newer
Windows runners.
- - - - -
50188615 by Ian Duncan at 2026-05-14T13:45:07+02:00
AArch64: use ASR not LSR for MO_U_Shr at W8/W16
The unsigned right shift (MO_U_Shr) for sub-word widths (W8, W16)
with a variable shift amount was emitting ASR (arithmetic/signed shift
right) after zero-extending with UXTB/UXTH. This should be LSR
(logical/unsigned shift right). After zero-extension the upper bits
happen to be 0 so ASR produces the same result, but it is semantically
wrong and would break if the zero-extension were ever optimized away.
Includes assembly output test (grep for lsr) and runtime test
verifying unsigned right shift of Word8 and Word16 values.
- - - - -
28666fbf by Vladislav Zavialov at 2026-05-19T12:44:05-04:00
Add type families: Tuple, Constraints, Tuple#, Sum# (#27179)
These type families map tuples of types to the corresponding Tuple<N>,
Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2:
Tuple (Int, Bool) = Tuple2 Int Bool
Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a)
Tuple# (Int#, Float#) = Tuple2# Int# Float#
Sum# (Int#, Float#) = Sum2# Int# Float#
See GHC Proposal #145 "Non-punning list and tuple syntax".
To make the Sum# instance at N=64 possible, this patch also introduces
the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64.
Metric Increase:
ghc_experimental_dir
- - - - -
41c2448b by Wen Kokke at 2026-05-19T12:44:53-04:00
rts: Add IPE event class for -l
This commit adds a new IPE event class to the -l RTS flag.
Previously, IPE events were enabled unconditionally.
However, the IPE events can easily grow to hundreds or thousands of megabytes.
With the new event class you can pass, e.g., -l-I to disable IPE events.
- - - - -
62536551 by Wen Kokke at 2026-05-19T12:44:53-04:00
ghc-internal: Add TraceFlags.traceIPE
- - - - -
e45312d1 by Wen Kokke at 2026-05-19T12:44:53-04:00
testsuite: Add test for TraceFlags.traceIpe
- - - - -
4768d9aa by Wen Kokke at 2026-05-19T12:44:53-04:00
ghc-internal: Add DebugFlags.ipe
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bc1b5c69 by Wen Kokke at 2026-05-19T12:44:53-04:00
testsuite: Add test for DebugFlags.ipe
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0da1543f by Duncan Coutts at 2026-05-19T12:45:37-04:00
Document removal of the signal-based interval timer
Update mentions within the RTS section of the users guide.
Add a changelog entry.
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b2911514 by Duncan Coutts at 2026-05-19T12:45:37-04:00
Fix section for an recent changelog entry
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d6d76a7a by David Eichmann at 2026-05-19T12:46:19-04:00
ghc-toolchain: implement llvm program versioning logic
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2dd36fa3 by Wolfgang Jeltsch at 2026-05-20T04:49:52-04:00
Turn `Trustworthy` into `Safe` in `base` where possible
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f4399dd1 by Wolfgang Jeltsch at 2026-05-20T04:50:37-04:00
Make the current `base` buildable with GHC 10.0
- - - - -
1a7de232 by Duncan Coutts at 2026-05-20T12:26:25-04:00
Hadrian: remove legacy rts .so symlinks
For compatibility with the old makefile based build system, hadrian had
rules to generate symlinks from unversioned to versioned names for the
rts .so/.dynlib file, like libHSrts-ghcx.y.so -> libHSrts-1.0.3-ghcx.y.so
We no longer need these symlinks since the makefile build system has
been retired some time ago. The need for these symlinks is awkward on
windows where we cannot (in practice) create symlinks. So rather than
make them conditional (non-windows), just remove them entirely.
- - - - -
286f1adf by fendor at 2026-05-20T12:27:09-04:00
Fix regression T27202: `:load` and `:add` work in GHCi
To fix the regression there are conceptually two major things that we
fix:
* We don't remove the `importDirs` from `interactive-session`
* When `:add`ing a module, we don't try to find them via PackageImports
* The PackageImport is wrong as we can't know the package-name at
this stage in ghc/UI.hs
What does it mean to not remove the `importDirs` from
`interactive-session`?
It means that, given some initial `DynFlags`, we will use those
`importDirs` in `interactive-session`.
The initial `DynFlags`, however, depend on how you initialise the GHC
session.
For a simple session, initialised by
ghc -isrc -this-unit-id main
It is simple, just use the `DynFlags` given on the cli.
Thus, `main` and `interactive-session` will have the same `DynFlags`,
except for the `homeUnitId` and `interactive-session` depends on `main`
by construction of the GHCi session.
What about a multiple home unit session, though?
ghc -unit @unit1 -unit @unit2
What are the `DynFlags` in this cli invocation? It shouldn't be either
`@unti1` nor `@unit2`, as the order shouldn't matter or any other
implicit condition.
For consistency, we decide that the initial `DynFlags` are the top
`DynFlags` on the cli, ignoring `-unit` flags.
Thus, in this example, there are no `importsDirs` regardless of what we
might find in `@unit1` and `@unit2`.
But in this invocation:
ghc -isrc -unit @unit1 -unit @unit2
The `interactive-session` will have the `importsDirs` `src`.
Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to
explicitly use `-i` to clear the `importsDirs`, in order to avoid
accidentally adding `src` as an import directory to all other home
units.
This fix has been made possible by the improvements introduced in
!15888, which avoids ambiguity when a home unit shares the `importsDirs`
with the `interactive-session`, on top of being much faster for multiple
home units.
Adds regression tests for T27202 for `:load`ing and `:add`ing modules
that are located in import directories.
- - - - -
728662de by fendor at 2026-05-20T12:27:09-04:00
Use home unit package db stacks in GHCi prompt and session unit
In order to import modules from home unit dependencies (e.g., `Data.Map`),
the ghci prompt unit needs to populate its `UnitState`.
This is tricky to handle correctly, which `PackageDBFlag`s should we use
to populate the `UnitState`?
We decide, the most intuitive solution for users is to depend on all
`PackageDBFlag`s, so that any dependency can be imported in GHCi.
This assumes consistency in the `PackageDBFlag`s, so no two home units
specify `PackageDBFlag`s that are inconsistent with each other.
We could simply concat all the `PackageDBFlag`s of the existing home
units, but later `PackageDBFlag`s shadow earlier ones, leading to the
last processed home units' `PackageDBFlag`s to shadow the earlier ones.
This is hard to fix, we need to give users the capability to provide ghc
options for the ghci prompt home unit.
However, as this is considerably more work, we decided on an
approximation that should work out most of the time.
Package Db stacks in cabal and stack follow a certain structure:
-no-user-package-db > -package-db $cabal-store > -package-db $local-db
The first two arguments are always the same, namely the
`-no-user-package-db` and `-package-db`.
We compute the longest common prefix over all home units, and use that
as the start of the package db stack. Then, over the rest of the
`PackageDBFlag`s, we simply take the union and append them to our
initial stack.
We assume, that the rest of package dbs only defines very few, "local"
units that are usually not shadowing each other.
This allows us to get a relatively consistent package database stack for
the ghci prompt home unit.
Similar reasoning applies to the session unit in order to add modules to
the session and have dependencies available in the module.
We do something similar for `-package` flags, to make sure only the
correct units are actually visible in the ghci session.
This time, we simply take the union of all `PackageFlag`s, allowing us
to import modules from the home unit dependencies.
In the future, it would be beneficial to allow the user to provide the
exact ghc options to control the visibilities. For now, this will have
to do.
- - - - -
740d89a0 by Simon Peyton Jones at 2026-05-20T17:20:44-04:00
Do not use mkCast during typechecking
This commit fixes #27219. The problem was that the typechecker was using
`mkCast`, whose assertion checks legitimately fail when applied to types
that contain unification variables.
- - - - -
a50fdb06 by Simon Peyton Jones at 2026-05-20T17:20:45-04:00
Major refactor of the Simplifier
The main payload of this patch is to refactor the Simplifer to avoid
repeated simplification when using Plan (AFTER) for rule rewrites.
The need for this was shown up by #26989.
See Note [Avoid repeated simplification] in GHC.Core.Opt.Simplify.Iteration.
Related refactoring:
* Refactor the two fields `sc_dup` and `sc_env` in `ApplyToVal` into one, `sc_env`.
Reason: the envt is irrelevant in the "simplified" case, so the data type describes
the possiblitiies much more accurately now.
* Some refactoring in `knownCon` to split off `wrapDataConFloats`.
* Refactor `lookupRule` and its auxiliary functions to return `RuleMatch`,
a new data type. See Note [data RuleMatch] in GHC.Core. Ditto for BuiltinRule.
This RuleMatch returns fragments of the target in rm_args and rm_floats,
leaving `rm_rhs` to be the stuff from the RULE itself.
Doing this has routine consequences in GHC.Core.Opt.ConstantFold. Many changes
there but all routine.
* When doing occurrence analysis on RULEs, make the occ-info on the rule
binders relate just to the RHS, not the LHS. See (OUR1) in
Note Note [OccInfo in unfoldings and rules]
This means that Lint must not complain about the fact that the patterns
in the RULE mentions binders that are marked dead.
See Note [Dead occurrences] in GHC.Core.Lint.
I changed the Core pretty-printer so that it didn't suppress dead binders,
else I can't see those binders in RULEs. That led to quite a lot of testsuite wibbles.
* Refactor FloatBinds, so that it is used both by
`exprIsConApp_mabye` and by `lookupRule`
* Move the definition of FloatBinds out of GHc.Core.Make, into GHC.Core.
* Add FloatTick as an extra constructor.
* Refactor `lookupRule` to use `FloatBinds` instead of `BindWrapper`.
This refactor just shares more code.
(Rename GHC.Core.Opt.FloatOut.FloatBinds to FloatLets, to avoid gratuitious
name clash with GHC.Core.FloatBinds.)
Corecion optimisation
* In simpleOpt, when composing coercions, call new function `optTransCo`.
This is much lighter weight than full blown coercion optimisation.
* Make `GHC.Core.Opt.Arity.pushCoValArg` and `pushCoTyArg` return the
coercionLKind of the coercion. This saves recomputing that coercionLKind
at the key call sites in GHC.Core.Opt.Simplify.Iteration.pushCast.
* Rename `addCoerce` in GHC.Core.Simplify.Iteration to become `pushCast`.
* In the `ApplyToVal` case of `pushCast` we had a very unsavoury call to `simplArg`.
I eliminated it by adding a field `sc_cast` to `ApplyToVal` that records any
pending casts. Much nicer now. See Note [The sc_cast field of ApplyToVal].
* Don't optimise coercions if the type-substitution is empty.
See Note [Optimising coercions] in GHC.Core.Opt.Simplify.Iteration.
The fix for #26838 is dramatic. For the test in perf/compiler/T26839 we have
Compiler allocs: Before: 7,363M
After: 688M
Compile time goes down generally. Here are compiler-alloc changes
over 0.5%:
CoOpt_Read(normal) 729,184,920 -0.7%
CoOpt_Singletons(normal) 666,916,960 -4.6% GOOD
LargeRecord(normal) 1,227,056,876 +1.1%
T12227(normal) 256,827,604 -4.6% GOOD
T12425(optasm) 76,879,410 -0.8%
T12545(normal) 787,826,918 -10.8% GOOD
T12707(normal) 775,186,464 -0.9%
T13253(normal) 318,599,596 -0.8%
T14766(normal) 685,857,320 -1.0%
T15304(normal) 1,123,333,422 -2.2%
T15630(normal) 123,142,330 -2.6%
T15630a(normal) 123,092,100 -2.6%
T15703(normal) 299,751,682 -2.9% GOOD
T17516(normal) 964,072,280 +1.0%
T18223(normal) 367,016,820 -6.2% GOOD
T18730(optasm) 130,643,770 -3.3% GOOD
T20261(normal) 535,608,584 -0.7%
T21839c(normal) 340,340,436 -0.9%
T24984(normal) 85,568,392 -1.9%
T3064(normal) 174,631,992 -1.2%
T3294(normal) 1,215,886,432 -0.7%
T5030(normal) 141,449,704 -17.2% GOOD
T5321Fun(normal) 258,484,744 -1.9%
T8095(normal) 770,532,232 -2.7%
T9630(normal) 858,423,408 -14.5% GOOD
T9872c(normal) 1,591,709,448 +0.7%
info_table_map_perf(normal) 19,700,614,458 -1.3%
geo. mean -0.7%
minimum -17.2%
maximum +1.1%
However, strangely there seems to be a 5.0% increase in CoOpt_Read in
the x86_64-linux-fedora43-validate+debug_info+ubsan job, although
there generally a /decrease/ in this test in other builds. The baseline
value looks strange. Anyway I'll just accept it.
Metric Decrease:
CoOpt_Singletons
T12227
T12545
T12707
T15703
T18223
T18730
T21839c
T5030
T9630
Metric Increase:
CoOpt_Read
- - - - -
834623d4 by Mrjtjmn at 2026-05-20T17:21:41-04:00
users-guide: Fix weird notation in "Summary of stolen syntax"
- - - - -
6f9d7c71 by Markus Läll at 2026-05-21T15:25:34-04:00
Use "grimily" instead of "grimly"
Fixes https://gitlab.haskell.org/ghc/ghc/-/issues/27221
- - - - -
50e999ca by fendor at 2026-05-21T15:26:18-04:00
Speed up 'closure' computation in `ghc-pkg`
Cache the set of already seen `UnitId`s and use `Set` operations to
speed up 'closure' computation.
Further simplify the implementation of 'closure' to account for the
actual usage.
As a consequence, we rename 'closure' to 'brokenPackages' to reflect its
purpose better after the simplification.
- - - - -
7ecc6184 by sheaf at 2026-05-21T15:27:10-04:00
TcMPluginHandling: be more lenient when no plugins
This change ensures that, if a function such as 'typecheckModule' was
invoked with 'NoTcMPlugins', GHC doesn't spuriously complain about TcM
plugins having already been stopped, as there were none to start with.
- - - - -
72c8de5c by Simon Jakobi at 2026-05-23T18:41:42-04:00
Implement List.elem via foldr
...in order to allow specialization to Eq instances.
The implementation of notElem is updated for consistency.`
Corresponding CLC proposal:
https://github.com/haskell/core-libraries-committee/issues/412
Addresses #27096.
- - - - -
3268c610 by Alan Zimmerman at 2026-05-23T18:42:30-04:00
EPA: Fix span for qualified multiline string
Fix the span for a qualified multiline string like
Text."""
I'm a multiline
Text value
!
"""
to extend to the end of the entire string, not just the first line.
Closes #27274
- - - - -
1f096790 by Alan Zimmerman at 2026-05-23T18:43:20-04:00
EPA: Fix exact printing namespace-specified wildcards
Ensures correct printing of imports of the form
import Data.Bool (data True(data ..))
import Data.Bool (data True(type ..))
Closes #27291
- - - - -
56ada7c0 by Mrjtjmn at 2026-05-23T18:44:19-04:00
Fix ambiguous syntax of BangPatterns in users guide
Update documentation for the BangPatterns extension to specify
how surrounding whitespace affects interpretation of `!`.
* Only when there is whitespace before `!` and no whitespace after,
it is recognized as a BangPattern.
* Other cases `⟨varid⟩!⟨varid⟩`, `⟨varid⟩ ! ⟨varid⟩`, `⟨varid⟩! ⟨varid⟩`
are treated as infix operators.
- - - - -
579aa0b7 by Simon Jakobi at 2026-05-25T16:31:26-04:00
Ensure that SetOps.{minusList,unionListsOrd} can be specialized
...by marking them INLINABLE. Haddock allocates 0.1–0.3% less as a
result.
This also removes some redundant constraints on unionListsOrd.
- - - - -
cccf45da by Cheng Shao at 2026-05-25T16:32:13-04:00
wasm: ensure post-linker output is synchronous ESM
This patch fixes wasm backend's post-linker output script to ensure
it's synchronous ESM and doesn't use top-level await, which doesn't
work in ServiceWorkers. Fixes #27257.
- - - - -
8db331a3 by Zubin Duggal at 2026-05-26T04:54:03-04:00
Update to semaphore-compat 2.0.0 using v2 of the protocol
On Linux and other POSIX platforms, GHC's -jsem jobserver client now
speaks v2 of the semaphore-compat protocol, which uses Unix domain
sockets in place of POSIX named semaphores. This avoids the libc-ABI
issues that affected the old implementation. Windows is unaffected
and continues to use the v1 protocol (Win32 named semaphores); its
reported protocol version remains v1.
When GHC receives a -jsem name whose protocol version it does not
support, it emits a -Wsemaphore-version-mismatch warning and falls
back to -j<N> rather than crashing. ghc --info exposes the supported
version in a new "Semaphore version" entry so cabal-install can detect
a mismatch before invoking GHC.
Users on a cabal-install that predates the v2 update will continue to
build successfully on Linux/POSIX, but will lose the cross-process
-jsem coordination and fall back to -j<N> per GHC invocation. Users
must upgrade to a cabal-install that supports protocol v2 to recover
full parallelism.
Also fix a leak in cleanupSem (#27253): cleanupSem used to snapshot
heldTokens and release them before killing the loop, while the loop's
in-flight acquire/release children could still be mutating it.
Cleanup now runs inside the loop's own exit handler, after draining
the active child via a new activeChild TVar, so the snapshot has no
concurrent mutator.
See also:
- GHC proposal amendment: https://github.com/ghc-proposals/ghc-proposals/pull/673
- cabal-install patch: https://github.com/haskell/cabal/pull/11628
- semaphore-compat MR: https://gitlab.haskell.org/ghc/semaphore-compat/-/merge_requests/8
Bump semaphore-compat submodule to 2.0.0
Fixes #25087 and #27253
- - - - -
17be4f1f by Alan Zimmerman at 2026-05-26T04:54:52-04:00
EPA: Record semicolons in HsModifier
Ensure the semi colons are captured in the ParsedSource for code like
%True;; %False;
instance C D
It makes HsModifier (and hence HsModifierOf) LocatedA, so the semi
colons can be recorded as [TrailingAnn]
Also rename pprHsModifiers to pprLHsModifiers to match.
Closes #27294
- - - - -
8f991755 by fendor at 2026-05-26T11:02:52-04:00
Revert prog003 acceptance
We thought the commit 286f1adff3e78d775ff325caff71d0cee25d710b fixed the
test, but due to changes to ghci, modules loaded during the GHCi
session, the test was actually no longer testing what it set out to do,
"fixing" the broken test.
As modules are added to the `interactive-session` home unit, the object code needs
to be compiled with `-this-unit-id interactive-session`, otherwise the
object code won't be used.
Once this has been fixed in the test, the test fails as expected again.
- - - - -
277a3687 by mangoiv at 2026-05-26T11:03:40-04:00
libraries/process: bump submodule to v1.6.29.0
This submodule bump resolves a segfault on macos 15.
Fixes #27144
- - - - -
6779bb0c by mangoiv at 2026-05-26T11:03:40-04:00
libraries/unix: in submodule, don't pick branch 2.7
The 2.7 branch is outdated and the module has been advanced far beyond
it anyway, so remove that line.
- - - - -
4a645683 by Simon Peyton Jones at 2026-05-27T21:41:59-04:00
Trim the continuation in mkDupableContWithDmds
When there are no remaining argument demands, it means the application
is bottoming. In this case, we can trim the continuation to avoid the
panic that was observed in #27261.
See Note [Trimming the continuation for bottoming functions] in
GHC.Core.Opt.Simplify.Iteration.
- - - - -
8ab506ff by Cheng Shao at 2026-05-27T21:42:47-04:00
ghci: fix module name string lifetime in hs_hpc_module invocation
This patch makes hpcAddModule pass a properly malloced module name
string to hs_hpc_module, instead of using useAsCString which causes
use-after-free of module name string. Fixes #27297.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
b0233814 by sheaf at 2026-05-27T21:43:31-04:00
Relax acceptance threshold for T10421
As seen in #27289, the 1% acceptance threshold for this text was
overly narrow, resulting in spurious test failures. This commit widens
the acceptance threshold to 2%. Fixes #27289.
- - - - -
63ce5770 by Luite Stegeman at 2026-05-28T12:23:35-04:00
Fixes for black holes
- suspend duplicate work for eager black holes
- detect eager black holes in checkBlockingQueues
- don't overwrite existing black holes even if they're not
in an eager blackhole frame
- don't deadlock on self when thunk is already blackholed
Fixes #26936
- - - - -
037a80dc by Tom McLaughlin at 2026-05-28T12:24:36-04:00
Event/Windows.hsc: rethrow exceptions in overlapped IO
This prevents the WinIO manager from swallowing exceptions in overlapped IO. It
was added to make WinIO support possible in the `network` library. See
https://gitlab.haskell.org/ghc/ghc/-/issues/27283.
We also bump __IO_MANAGER_WINIO__ to 2 so libraries can gate on this using CPP.
- - - - -
2d53bcdb by Wolfgang Jeltsch at 2026-05-28T12:25:21-04:00
Allow `downsweep` to use nodes of an existing module graph
To this end, `downsweep` has not been able to use the nodes of a module
graph obtained from a previous downsweeping round. In some GHC API
applications, downsweeping is performed somewhat incrementally and
therefore could profit from reusing such existing results. This
contribution makes this possible.
Resolves #27054.
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
- - - - -
f4fbb583 by Simon Jakobi at 2026-05-28T12:26:04-04:00
Add regression test for T11226
Closes #11226.
- - - - -
ed29a5e6 by Sven Tennie at 2026-05-28T17:30:36-04:00
Add optional config setting for LibDir (#19174)
Previously, the `libDir` was derived from `topDir`. This won't work for
inplace stage2 cross-compilers where binaries and libraries are in
different stage dirs (`_build/stage1/` for executables and
`_build/stage2` for libraries).
`LibDir` is set in the inplace `settings` files. For bindists, we
generate a new `settings` file with no `LibDir` entry. GHC then defaults
to use `topDir` as `libDir` again. This keeps the bindist relocatable.
If `LibDir` is a relative path, it is interpreted relatively to
`topDir`.
The global package db is part of the `lib/` folder. If we want to point
for inplace cross-compilers to the succeeding stage's folder, this is
done by setting `LibDir`. Thus, the global package db must be found
relative to `libDir`` (which may default to `topDir` or be set by
`LibDir`).
The complexity of settings becomes scary. So, add a test to ensure
`LibDir` works as expected.
- - - - -
8339cf8f by Sven Tennie at 2026-05-28T17:30:36-04:00
Add Haddock to FileSettings
Helping to understand the fields' meanings without deeper analyses.
- - - - -
4ce251e4 by Sylvain Henry at 2026-05-28T17:31:39-04:00
foundation test: skip signed minBound `quot` (-1) (#27222)
`minBound `quot` (-1)` for fixed-width signed integers is platform
dependent: the mathematical result -minBound is not representable in
the type. On x86, IDIV traps; LLVM's sdiv is undefined behaviour in
this case; on AArch64/RISC-V, SDIV wraps to minBound.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
b8ba7e61 by Simon Jakobi at 2026-05-28T17:32:23-04:00
Prevent dictionary-passing in checkTyEqRhs
...by pre-specializing it to TcM.
Previously, wherever checkTyEqRhs was used in other modules, the
Core showed dictionary passing ($fMonadIOEnv). The added SPECIALIZE
pragma prevents this.
- - - - -
d603477f by David Eichmann at 2026-05-29T13:17:12-04:00
Hadrian: create a ghc-internal .def file per ghc-internal dll
The .def file generated from rts/win32/libHSghc-internal.def.in contains
the name of the ghc-internal dll. The correct dll name differs based
on if the dll is inplace/final and if using the Dynamic way. Previously,
this was not accounted for and inconsistent dlls names where used. That
led to failure when loading dlls at runtime in experiments with windows
dynamic linking.
- - - - -
1fc21753 by Sylvain Henry at 2026-05-29T13:18:14-04:00
ghc-bignum: copy backend interface haddocks to Native backend (#27305)
The haddock comments documenting the BigNat backend interface (function
contracts, expected MutableWordArray# sizes, return-value semantics, etc.)
were attached to the FFI backend module. Copy them to the Native backend
so they remain in tree once the FFI backend is removed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
717059df by Sylvain Henry at 2026-05-29T13:18:14-04:00
ghc-bignum: remove FFI backend (#27305)
The FFI backend of ghc-bignum (now part of ghc-internal) had no known
users and is easy to recreate by relinking ghc-internal with a custom
backend. Remove the backend module, the bignum-ffi cabal flag, and the
ffi option from Hadrian's --bignum selector. The backend interface
documentation now lives in the Native backend module.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
4bb3b1d8 by Sylvain Henry at 2026-05-29T13:18:14-04:00
ghc-bignum: remove Check backend (#27305)
The Check backend of ghc-bignum (now part of ghc-internal) compared the
selected backend's output against the Native backend for validation.
It had no known users. Remove the backend module, the bignum-check
cabal flag, the bignumCheck Hadrian flavour field, and the check-
prefix in Hadrian's --bignum selector.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
6b3044a0 by David Eichmann at 2026-05-30T11:58:48-04:00
Add code comments to allocator code
- - - - -
f4e04210 by Matthew Pickering at 2026-05-30T11:59:34-04:00
hadrian: Refactor system-cxx-std-lib rules
I noticed a few things wrong with the hadrian rules for
`system-cxx-std-lib` rules.
* For `text` there is an ad-hoc check to depend on `system-cxx-std-lib`
outside of `configurePackage`.
* The `system-cxx-std-lib` dependency is not read from cabal files.
* Recache is not called on the packge database after the `.conf` file is
generated, a more natural place for this rule is `registerRules`.
Treating this uniformly like other packages is complicated by it not
having any source code or a cabal file. However we can do a bit better
by reporting the dependency firstly in `PackageData` and then needing
the `.conf` file in the same place as every other package in
`configurePackage`.
This commit increases the `shakeVersion`, to provide backwards
compatibility to previous builds with different PackageData.
Fixes #25303
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
- - - - -
576987d0 by Simon Jakobi at 2026-06-02T04:53:36-04:00
compiler: use nubOrd from containers
Address #27103 by replacing GHC.Utils.Misc.ordNub[On] with
Data.Containers.ListUtils.nubOrd[On].
Note that nubOrd suffers from a small inefficiency, a fix for which
will be included in the next containers release:
https://github.com/haskell/containers/issues/1202
- - - - -
deea53c3 by David Eichmann at 2026-06-02T04:54:22-04:00
Hadrian: disable response files for GHC/Haddock builders on non-Windows
This makes debugging build errors easier on non-windows hosts.
See issue #27230
- - - - -
f2f5c6ba by Nikita Efremov at 2026-06-02T16:04:54+00:00
fix typo : compete with performance, not complete
- - - - -
5524ea0e by Wolfgang Jeltsch at 2026-06-03T08:01:26-04:00
Make the current `base` buildable with GHC 9.14
This comprises the following changes:
* Disable some imports into `GHC.Base` for GHC 9.14
* Disable some imports into `Prelude` for GHC 9.14
* Disable separate `ArrowLoop` import for GHC 9.14
* Disable `GHC.Internal.STM` import for GHC 9.14
* Disable `GHC.Internal.Unicode.Version` import for GHC 9.14
* Disable `GHC.Internal.TH.Monad` import for GHC 9.14
* Add alternative `fixIO` import for GHC 9.14
* Add alternative `unsafeCodeCoerce` import for GHC 9.14
* Disable hiding of imported SIMD operations for GHC 9.14
* Disable use of GHC 9.14’s `printToHandleFinalizerExceptionHandler`
* Enable use of `getFileHash` from `ghc-internal` for GHC 9.14
* Make `thenA` available for GHC 9.14
* Make `thenM` available for GHC 9.14
* Disable translation of `IoManagerFlagPoll` for GHC 9.14
* Add `hGetNewlineMode` for GHC 9.14
- - - - -
d3438055 by Enrico Maria De Angelis at 2026-06-03T08:02:17-04:00
Fix #27067 - Clarify haddocks on `minusNaturalMaybe`
- - - - -
f9bcfac2 by sheaf at 2026-06-03T14:47:19-04:00
Avoid mkTick in Core Prep breaking ANF
As discovered in #27182, mkTick can break ANF. This patch introduces a
variant of mkTick that skips the single optimisation that could break
ANF. This is preferrable over switching to the raw Tick constructor,
as the latter may introduce spurious cost centres in profiling reports.
This is a temporary measure until we more thoroughly refactor how
mkTick works (see #27141).
See Note [mkTick breaks ANF] in GHC.CoreToStg.Prep.
Fixes #27182
- - - - -
cf1fd661 by Artem Pelenitsyn at 2026-06-03T14:48:09-04:00
clarify comment for getSizeofMutableByteArray#: we get the size in bytes, not "elements"
- - - - -
a3b431f3 by David Eichmann at 2026-06-04T10:10:19+00:00
Hadrian: convert env variable ACLOCAL_PATH to unix paths.
Convert ACLOCAL_PATH to a unix style path when invoking autoreconf.
Autoreconf doesn't handle windows paths.
See Note [Autoreconf unix paths from ACLOCAL_PATH].
Fixes #27311
- - - - -
18f6138a by Simon Jakobi at 2026-06-04T20:20:31-04:00
testsuite: Deduplicate --only test names
config.only is assumed to be a set, but supplying --only overwrote it
with the (list) argparse result, which can contain duplicates. When a
test ran, config.only.remove(name) dropped only the first occurrence,
so a duplicated name lingered and was later misreported as a
"test not found" framework failure. Store it as a set instead.
Fixes #27322
Co-Authored-By: Claude Opus 4.7 <noreply(a)anthropic.com>
- - - - -
2f3cc9ff by Simon Jakobi at 2026-06-08T07:55:49-04:00
testsuite: detect fast bignum via ghc-internal, not removed ghc-bignum
The ghc-bignum package was merged into ghc-internal, so the BIGNUM_GMP
probe in test.mk ran `ghc-pkg field ghc-bignum exposed-modules`, which
fails with "cannot find package ghc-bignum". That error went to stderr
and leaked into the captured stderr of every makefile_test, causing
spurious [bad stderr] failures across the suite. The probe also silently
returned empty, so config.have_fast_bignum was wrongly False even on GMP
builds.
Probe ghc-internal's extra-libraries for the gmp library instead: the
GMP backend module is an other-module (not exposed), but GMP_LIBS adds
gmp to extra-libraries only on a GMP build, so this distinguishes the
backends. Redirect stderr to keep any future missing-package error off
the harness's stderr.
This also removes a stale comment as per suggestion from hsyl20.
Co-Authored-By: Claude Opus 4.7 <noreply(a)anthropic.com>
- - - - -
eb3bf6e7 by Alan Zimmerman at 2026-06-08T07:56:32-04:00
EPA: Rename Transform.anchorEof to addModuleCommentOrigDeltas
This now matches what it actually does.
- - - - -
498bb21a by David Eichmann at 2026-06-09T18:02:39-04:00
Hadrian: avoid response files when command line is short enough
This replaces the logic of always using response files on Windows.
With the new condition based on command line lenght, reponse files
can be avoided in many more cases (on windows).
Now that response files are only used in a small number of cases,
response files are always kept and the -r / --keep-response-files
command line options have been removed
The response file paths are nolonger randomized. They are placed in the
`_build/rsp` directory. This ensures they are ignored by git and we
that Hadrian reuses response file paths when rebuilding rather than
leaving stale response files around.
Update user guide putting response files in its own section
- - - - -
87f510a5 by Simon Hengel at 2026-06-09T18:03:25-04:00
Don't use non-breaking spaces
- - - - -
41a19379 by David Eichmann at 2026-06-09T18:04:11-04:00
Hadrian: remove unused wrapper scripts from windows bindist
These wrapper scripts are only installed on non-relocatable builds
which are not generally supported on windows.
- - - - -
ce01ccb6 by sheaf at 2026-06-10T05:08:48-04:00
Don't drop ticks around variables of type `IO ()`
GHC.Core.Utils.mkTick is responsible for placing a tick on a Core
expression. It contains logic for dropping SCCs (non-counting profiling
ticks) around non-function variables, as such variables cannot
meaningfully contribute to profiles. However, the logic for what counts
as a function was incorrect: it used `isFunTy` which returns 'False' for
types such as 'IO ()' where the function arrow is hidden under a
newtype.
We now use 'mightBeFunTy' instead of 'isFunTy'. This ensures we don't
drop ticks in cases we aren't sure.
On the way, we improve the documentation of 'isFunTy', 'isPiTy' and
'mightBeFunTy', and update the latter's implementation to consistently
handle unary classes.
Fixes #27225
-------------------------
Metric Decrease:
T5642
-------------------------
- - - - -
d311c4f1 by Simon Jakobi at 2026-06-10T05:09:32-04:00
testsuite: Add regression test for #4081
Check that a strict constructor field is unboxed once outside an
enclosing loop, not re-inspected each iteration (the float-out
case-floating from 9cb20b488). Uses simonpj's `data T a = T !a` example
from the ticket; T4081.stderr captures the expected Core.
Co-Authored-By: Claude Opus 4.7 <noreply(a)anthropic.com>
- - - - -
333df444 by sheaf at 2026-06-10T05:10:25-04:00
Check for cabal-install >= 3.12 upfront
Starting with commit 8cb99552f607f6bc4000e45ab32532d50c8bb996, Hadrian
requires cabal-install >= 3.12 in order to use the 'cabal path' command
that was introduced in version 3.12, as per
https://github.com/haskell/cabal/blob/a51c4ee1556d816ad86e90db7e6330dd51b0b…
This was not reflected in the Hadrian build script, causing a delayed
build failure instead of enforcing the version requirement upfront,
which this patch does.
Fixes #27317
- - - - -
98c20394 by sheaf at 2026-06-10T05:11:09-04:00
Fix crash in Data.Data instance for HsCtxt
The Data.Data instance for HsCtxt contained an error for the 'toConstr'
method, which could trigger for example when looking at -ddump-tc-ast
traces. Replace it with the 'abstractConstr' pattern used in the rest of
the codebase.
- - - - -
5ac9ce7d by Zubin Duggal at 2026-06-10T21:26:32+05:30
hadrian: Remove old package.conf files when generating new ones
Old package.conf files might exists with different hashes, causing issues like #26661
Fixes #26661
- - - - -
c9015f09 by sheaf at 2026-06-11T12:40:28-04:00
Fix AArch64 clobbering bug for MUL2
On AArch64, the code generator could clobber one of the input operands
when computing the lower bits of a MUL2 operation. This rendered invalid
the subsequent computation of the high bits.
This commit fixes that by using a temporary register. The register
allocator can remove the redundant move in the common case when the
registers do not conflict.
Fixes #27046
- - - - -
7ab90288 by Rodrigo Mesquita at 2026-06-11T12:41:11-04:00
fix: make T27131 less flaky
It seems that T27131 fails flakily in a race where we check the flag
before the capability had the chance to process the mailbox which sets
the flag. This seemingly should only happen if the capability ends up
being the same for setting and checking the flag.
- - - - -
8965cb76 by Marc Scholten at 2026-06-12T04:53:22-04:00
haddock: render modules concurrently
- - - - -
8cc0b64a by Duncan Coutts at 2026-06-12T04:54:06-04:00
Promote HAVE_PREEMPTION from Timer.c to OSThreads.h
We will want to know about HAVE_PREEMPTION in more places.
HAVE_PREEMPTION tells us that we do have OS threads available,
irrespective of whether THREADED is defined. In particular,
HAVE_PREEMPTION is defined on all proper OSs, but not on WASM (and
hyopthetically may not be true on some other platforms like
micro-controllers, RTOSs, VM hypervisors etc).
- - - - -
cce574ed by Duncan Coutts at 2026-06-12T04:54:06-04:00
Define ACQUIRE_LOCK_ALWAYS and friends
Fix issue #27335
Like the atomic _ALWAYS variants, these lock actions are always defined,
rather than being dependent on whether we are in the THREADED case. All
the "normal" LOCK macros are defined to be no-ops when !THREADED.
The use case for the _ALWAYS variants is where we are using OS threads
even in the non-threaded RTS. This includes everything to do with the
timer/ticker thread, which is used in the non-threaded RTS too.
In particular, we will want to use this for eventlog things, because the
timer thread performs eventlogging concurrently with the main
capability, even in the non-threaded RTS.
- - - - -
1f28d1f6 by Duncan Coutts at 2026-06-12T04:54:06-04:00
Use ACQUIRE/RELEASE_LOCK_ALWAYS with eventBufMutex
Even in the non-threaded RTS the eventBufMutex is needed by both the
main capability and the timer/ticker thread, so always use the mutex.
This should fix #25165 which is about the main capability and the timer
thread posting events to the eventlog buffer concurrently and thereby
corrupting the buffer data.
- - - - -
0ff29782 by Duncan Coutts at 2026-06-12T04:54:06-04:00
Expose eventBufMutex in the EventLog interface/header
We will need it in forkProcess to ensure we don't write to the global
eventlog buffer concurrently with trying to flush eventlog buffers and
do the fork().
- - - - -
7a688395 by Duncan Coutts at 2026-06-12T04:54:07-04:00
Split flushAllCapsEventsBufs into safe and unlocked version
Following the convention that unlocked versions have a trailing _
underscore in their name. This one requires the caller to hold the
eventlog global buffer mutex. We will need this in forkProcess.
- - - - -
341ed474 by Duncan Coutts at 2026-06-12T04:54:07-04:00
Remove redundant use of stopTimer in setNumCapabilities
Historically, the comment here was:
We must stop the interval timer while we are changing the
capabilities array lest handle_tick may try to context switch
an old capability. See #17289.
and
We must disable the timer while we do this since the tick handler may
call contextSwitchAllCapabilities, which may see the capabilities array
as we free it.
What this refers to is that historically, when changing the number of
capabilities, the array of capabilities was reallocated to a new size,
allocating new ones and freeing the old ones, thus invalidating all
existing capbility pointers.
Strangely, for good measure the code used to call stopTimer twice (hence
the two similar comments above).
However, since commit a3eccf06292dd666b24606251a52da2b466a9612, the
capabilities array is no longer reallocated. Instead the array is
allcoated once on RTS startup to the maximum size it could ever be
allowed to be, and then capabilities get enabled/disabled at runtime. So
the capability pointers never become invalid anymore. At worst, they may
point to capabilities that are disabled.
Thus we no longer need to stop the timer (twice) while we change the
number of enabled capabilities. This also partially solves issue #27105,
which notes that stopTimer is being used as if it were synchronous, when
it is not. At least for this case, the solution is that stopTimer is not
needed at all!
- - - - -
674858e3 by Duncan Coutts at 2026-06-12T04:54:07-04:00
Remove redundant use of stopTimer in forkProcess
but replace it with taking the eventlog buffer lock during the fork.
Fixes issue #27105
The original reason to block the timer during a fork was that
historically the timer was implemented using a periodic timer signal,
and the signal itself would interrupt the fork system call (returning
EINTR). For large processes (where fork() takes a while) this could
permanently livelock: the timer always would go off before the fork
could complete, which got retried in a loop forever.
The timer is no longer implemented as a unix signal, but uses threads.
Thus the original problem no longer exists. The only remaining reason to
block the timer tick is to prevent actions taken by the tick from
interfering with the delicate process involved in fork (taking a load of
locks and pausing everything).
The only thing we need to do is to prevent the eventlog from being
written to or flushed while the fork is taking place. To achieve this
all we need to do is hold the mutex for the global eventlog buffer.
This removes the last use of stopTimer that expects stopTimer to work
synchronously (which it was not) and thus solves issue #27105. To be
clear, we solve issue #27105 not by making stopTimer synchronous, but by
eliminating the use sites that expected it to be synchronous.
- - - - -
40764930 by sheaf at 2026-06-12T14:54:43-04:00
Add type family performance test for #26426
Some GHC versions produced large numbers of coercions after typechecking
and desugaring when compiling the program in #26426:
Version | Typechecker time | Typechecker allocations | Coercions
-------:|-----------------:|------------------------:|---------:
9.6 | 47 ms | 48 MB | 110k
9.8 | 1000 ms | 486 MB | 10,437k
9.10 | 922 ms | 489 MB | 10,436k
9.12 | 906 ms | 482 MB | 10,437k
9.14 | 63 ms | 55 MB | 333k
10.0 | 47 ms | 64 MB | 35k
The improvement 9.12 -> 9.14 was due to commit 22d11fa818fae2c95c494fc0fac1f8cb4c6e7cb6,
while the improvement 9.14 -> 10.0 was due to commit 0b7df6db9e46df40e86fbff1a66dc10440b99db5.
As the behaviour of GHC seems better than it's ever been on this program,
we declare victory, adding this performance test to ensure we don't
regress on this program.
On the way, we update Note [Combining equalities] in GHC.Tc.SolveR.Equality
with the explanation of the 9.12 -> 9.14 improvement (getting rid of an
exponential blowup in coercion sizes), and we update
Note [Exploiting closed type families] in GHC.Tc.Solver.FunDeps with
the explanation of the 9.14 -> 10.0 improvement (bringing down coercion
size growth from cubic to quadratic).
- - - - -
0f3d0a71 by Zubin Duggal at 2026-06-12T14:55:30-04:00
compiler: mark tool messages as errors/warnings depending on the exit code
Fixes #27370
- - - - -
d9ea2d76 by mangoiv at 2026-06-13T04:41:51-04:00
libraries/process: bump submodule to v1.6.30.0
- bump the submodule to the appropriate tag
- suppress benign warning resulting from the change
- - - - -
6ebaaba3 by David Eichmann at 2026-06-13T04:42:37-04:00
ghc-toolchain: don't throw when candidate executables are not found
Fixes #27369
- - - - -
6c65e1e1 by David Eichmann at 2026-06-13T04:43:23-04:00
CI: lint-changelog checks for no-changelog label in script instead of rules
- - - - -
bab37cc6 by konsumlamm at 2026-06-13T19:10:21+02:00
Implement CLC proposal #378
Add `Data.Double` and `Data.Float` modules
Document that GHC uses IEEE 754
- - - - -
fb5246ad by fendor at 2026-06-15T18:07:23-04:00
Drop `preloadClosure` from `UnitState`
It is always hard-coded to the same value.
Backpack Unit instantiation isn't using it any more.
Allows us to simplify the API and get rid of `improveUnit`.
- - - - -
291ce3aa by ARATA Mizuki at 2026-06-15T18:08:26-04:00
RISC-V NCG: Zero-extend the result of castFloatToWord32
According to the ISA manual, FMV.X.W sign-extends the result.
We need to truncate the result to avoid creating an exotic Word32 value.
Fixes #27300
- - - - -
011be91f by ARATA Mizuki at 2026-06-15T18:08:26-04:00
RISC-V NCG: Treat d28-d31 (ft8-ft11) as caller-saved
According to the calling convention, the registers d28-d31 (ft8-ft11) are caller-saved.
Fixes #27306
- - - - -
e8a54713 by ARATA Mizuki at 2026-06-15T18:08:26-04:00
RISC-V NCG: Set rounding mode when emitting `truncate`
If we omit the rounding mode for `fcvt`, `dyn` will be used.
We do not want that for `truncate`, so we set `rtz`.
In other places, we set `rne` because we do not use the dynamic rounding mode.
Fixes #27303
- - - - -
9438bec7 by Zubin Duggal at 2026-06-15T18:09:11-04:00
rts: fix validate build with gcc 16. `__attribute__((regparm(1)))` is ignored on x86_64 and now
gcc warns that it is ignored:
rts/sm/Evac.h:35:1: error:
error: ‘regparm’ attribute ignored [-Werror=attributes]
See https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=ccead81bbc39668376eb5cf47066a…
Fixes #27366
- - - - -
893e6133 by Andrew Lelechenko at 2026-06-15T23:55:36+01:00
base: more NonEmpty zips
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/409
- - - - -
1314f2fd by David Eichmann at 2026-06-16T05:46:52-04:00
Hadrian: fix ghc-internal .def file name
- - - - -
7f72bcb3 by mangoiv at 2026-06-16T05:47:39-04:00
compiler: ignore camelCase and Eta reduce hlint hints
These do not cohere with the style used in GHC. After disabling them,
hlint lints are much less noisy again.
- - - - -
842bef9f by Alan Zimmerman at 2026-06-16T05:48:25-04:00
EPA: Use standard type family declaration for Anno
- - - - -
f6d30767 by Wolfgang Jeltsch at 2026-06-16T15:32:34-04:00
Fix two issues in the documentation of pipeline interruption
One issue is a typo (“interreuptible”), the other one the lack of an end
of a sentence, which has been reconstructed from the message of
633bbc1fd4762a2bb73ba1c5b9e0c279f1dd3c40, the commit that introduced
said documentation.
- - - - -
a3fa10e0 by Christian Georgii at 2026-06-16T15:33:26-04:00
Find plugins in sibling home units in multiple-home-unit sessions
In a multiple-home-unit session (e.g. `cabal repl --enable-multi-repl` or HLS), enabling a plugin with -fplugin that is defined in (or reexported by) another home unit failed with a "hidden package" error. The plugin module finder only searched the current home unit and the registered external packages, never the sibling home units.
findPluginModuleNoHsc now searches the home units that the current home unit depends on, following module reexports and respecting hidden modules, exactly as ordinary import resolution does in findImportedModuleNoHsc. To avoid two divergent copies of this logic, the shared home-unit search (the current home unit first, then its dependencies in priority order, with the accompanying ordering invariant) is extracted into findHomeModuleAmongDeps, which both findImportedModuleNoHsc and findPluginModuleNoHsc now call.
Add testsuite/tests/driver/multipleHomeUnits/plugin01, which loads a plugin as byte-code from a sibling home unit, and plugin02, in which the consumer enables a plugin reexported by a sibling home unit without depending on the plugin's own home unit directly.
Fixes #27349
- - - - -
d216412b by Ian-Woo Kim at 2026-06-16T20:25:57-04:00
Make the order of usages deterministic
It has been observed that the ordering of usages can be non-determinstic
in parallel builds. Therefore, this contribution introduces sorting of
usages based on a platform- and race-independent sorting criterion.
Resolves #26877.
Co-authored-by: Wolfgang Jeltsch <wolfgang(a)well-typed.com>
- - - - -
8e1cc105 by Wolfgang Jeltsch at 2026-06-16T20:25:57-04:00
Change the descriptions of two existing changelog entries
The descriptions now describe the changes in a user-friendly manner, as
opposed to describing the contributions that led to these changes in a
developer-friendly manner.
- - - - -
636c1c7a by Ian Duncan at 2026-06-16T20:26:50-04:00
AArch64: use SXTH, not SXTW, for W32 signExtendReg
signExtendReg was using SXTH (sign-extend halfword, 16-bit) for
W32-to-W64 sign extension. This should be SXTW (sign-extend word,
32-bit). SXTH only sign-extends the lower 16 bits, producing wrong
results for 32-bit values whose bit 15 differs from bit 31.
Other fixes:
- At sub-W64, code gen for MO_S_Mul2 should use W32 registers for
SMULL source operands as per the ARM spec (SMULL Xd, Wn, Wm),
and not W64.
- Ensure signExtendReg uses the source width for the source operand
in SXTW/SXTH/SXTB instructions. GNU as requires sxtw Xd,Wn (not
sxtw Xd,Xn), while LLVM's integrated assembler on macOS is lenient.
- Fix overflow flag computation for `MO_S_Mul2`. The overflow bit
was exactly inverted for sub-W64 operands.
Fixes #26978 and #27047
- - - - -
b734c75d by Igor Ranieri at 2026-06-16T20:27:32-04:00
haddock: Update CONTRIBUTING with missing step, add missing test
dependency
- - - - -
7fe4f2ec by Luite Stegeman at 2026-06-17T05:35:09-04:00
tag inference: don't confuse functions with their return values
inferTagRhs was mixing up taggedness for closures and return values
for function closures. We really shouldn't assign TagTuple to a
properly tagged function returning a tuple.
We fix this by keeping track of functions (TagFun) separately from
values (TagVal) and keeping track of their return value. TagFun is
also used for join points.
fixes #27005
- - - - -
4671c126 by Sebastian Graf at 2026-06-17T05:35:55-04:00
Seed the simplifier's in-scope set for open expressions
simplifyExpr simplifies expressions typed at the GHCi prompt and the
results of Template Haskell splices. Such an expression may be open: at a
GHCi debugger breakpoint its free variables include RuntimeUnk skolems
standing for as-yet-unknown types.
The simplifier began with an in-scope set holding only the wildcard
binder, so when it instantiated the unsafeCoerce# wrapper that GHCi
builds around a result, it formed a substitution whose range mentioned a
free skolem that was not in scope. That breaks the substitution invariant
and, in a compiler built with assertions, trips substTy's sanity check.
Seed the initial in-scope set with the free variables of the expression.
For a closed expression this adds nothing.
See Note [Seed the in-scope set for open expressions].
Fixes #17833 and its duplicate #21118.
- - - - -
67d41299 by Sebastian Graf at 2026-06-18T05:18:24-04:00
Desugar a `case` scrutinee only once (#27383, #20251)
In `dsExpr` for `HsCase` we desugared the scrutinee /twice/: once to
build the Core `case` itself, and again inside `matchWrapper`, which
re-desugared the source scrutinee (via `addHsScrutTmCs`) purely to
record long-distance information for the pattern-match checker.
For a single `case` that is merely wasteful. But for nested cases it
is catastrophic. Consider
case (case (case e of ... ) of ... ) of ...
Desugaring the outer scrutinee desugars the middle `case` twice, each
of which desugars the inner `case` twice, and so on. The work doubles
at every level, so desugaring takes O(2^n) time in the nesting depth.
That is the blowup reported in #27383; it is also what makes the
machine-generated program in #20251 take an age to compile.
The fix is simple. `matchWrapper` is handed the scrutinee anyway, so
we give it the Core expression we have /already/ desugared, and record
the long-distance term constraint with `addCoreScrutTmCs` instead of
re-desugaring from source. This is just what `matchSinglePatVar`
already does for single-pattern matches.
So:
* `matchWrapper` now takes `Maybe [CoreExpr]` rather than
`Maybe [LHsExpr GhcTc]`.
* The `HsCase` equation of `dsExpr` passes the already-desugared
`core_discrim`; the arrow desugarer passes its match variables.
* `addHsScrutTmCs` had no other use, so it is gone.
Desugaring is now linear in the nesting depth. (The coverage checker
still runs `simpleOptExpr` over each scrutinee, which leaves the total
at O(n^2); that is ample.) The long-distance information itself is
unchanged: the checker sees precisely the Core that backs the
generated code.
Test: deSugar/should_compile/T27383
- - - - -
fa5defde by Rodrigo Mesquita at 2026-06-18T05:19:11-04:00
fix: Save FastStrings in the PMC
There is no point in adding the unique to the occurrence FastString we
create, since it is part of the Id anyway.
Adding it to the FastString, meant each FastString was unique
unnecessarily!
In a separate branch, running the compiler on test `InstanceMatching`
observed 30000 `FastString`s created by this code path.
Plus, `fsLit "pm"` follows the existing pattern in `mkPmId`.
- - - - -
4efb4a66 by Alan Zimmerman at 2026-06-18T14:41:14-04:00
TTG: Add extension points to HsConDetails
Extend HsConDetails as
data HsConDetails p arg rec
= PrefixCon !(XPrefixCon p) [arg] -- C @t1 @t2 p1 p2 p3
| RecCon !(XRecCon p) rec -- C { x = p1, y = p2 }
| InfixCon !(XInfixCon p) arg arg -- p1 `C` p2
| XHsConDetails !(XXHsConDetails p)
type family XPrefixCon p
type family XRecCon p
type family XInfixCon p
type family XXHsConDetails p
- - - - -
c8d27dd4 by Simon Jakobi at 2026-06-18T14:41:59-04:00
CI: quiet submodule clean output in after_script and setup
The clean and cleanup_submodules functions ran 'git submodule foreach
git clean -xdf', flooding the job log with 'Entering ...' and
'Removing ...' lines. Pass --quiet to 'git submodule' and -q to 'git
clean' to drop the success output; errors are still reported.
Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com>
- - - - -
09326ca6 by Matthew Pickering at 2026-06-20T23:41:12+02:00
Add missing req_interp modifier to T18441fail3 and T18441fail19
These tests require the interpreter but they were failing in a different
way with the javascript backend because the interpreter was disabled and
stderr is ignored by the test.
- - - - -
521e55bf by Matthew Pickering at 2026-06-20T23:41:13+02:00
hadrian: Fill in more of the default.host toolchain file
When you are building a cross compiler this file will be used to build
stage1 and it's libraries, so we need enough information here to work
accurately. There is still more work to be done (see for example, word
size is still fixed).
- - - - -
23c9b6c3 by Matthew Pickering at 2026-06-20T23:42:52+02:00
hadrian: Build stage 2 cross compilers
* Most of hadrian is abstracted over the stage in order to remove the
assumption that the target of all stages is the same platform. This
allows the RTS to be built for two different targets for example.
* Abstracts the bindist creation logic to allow building either normal
or cross bindists. Normal bindists use stage 1 libraries and a stage 2
compiler. Cross bindists use stage 2 libararies and a stage 2
compiler.
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
New hadrian target:
* `binary-dist-dir-cross`: Build a cross compiler bindist (compiler =
stage 1, libraries = stage 2)
This commit also contains various changes to make stage2 compilers
feasible.
-------------------------
Metric Decrease:
LinkableUsage02
ManyAlternatives
ManyConstructors
MultiComponentModulesRecomp
MultiLayerModulesRecomp
RecordUpdPerf
T10421
T12150
T12227
T12425
T12707
T13035
T13379
T13820
T15703
T16577
T18140
T18282
T18698a
T18698b
T18923
T1969
T20049
T21839c
T3294
T4801
T5030
T5321FD
T5321Fun
T5631
T5642
T6048
T783
T9020
T9198
T9233
T9630
T9872d
T9961
parsing001
T3064
Metric Increase:
T26989
hard_hole_fits
-------------------------
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
- - - - -
26fed8ab by Matthew Pickering at 2026-06-20T23:42:52+02:00
ci: Test cross bindists
We remove the special logic for testing in-tree cross
compilers and instead test cross compiler bindists, like we do for all
other platforms.
- - - - -
80c8910e by Matthew Pickering at 2026-06-20T23:42:52+02:00
ci: Introduce CROSS_STAGE variable
In preparation for building and testing stage3 bindists we introduce the
CROSS_STAGE variable which is used by a CI job to determine what kind of
bindist the CI job should produce.
At the moment we are only using CROSS_STAGE=2 but in the future we will
have some jobs which set CROSS_STAGE=3 to produce native bindists for a
target, but produced by a cross compiler, which can be tested on by
another CI job on the native platform.
CROSS_STAGE=2: Build a normal cross compiler bindist
CROSS_STAGE=3: Build a stage 3 bindist, one which is a native compiler and library for the target
- - - - -
8215573d by Sven Tennie at 2026-06-20T23:42:52+02:00
ci: Increase timeout for emulators
Test runs with emulators naturally take longer than on native machines.
Generate jobs.yml
- - - - -
5acb7dbc by Matthew Pickering at 2026-06-20T23:42:52+02:00
ci: Javascript don't set CROSS_EMULATOR
There is no CROSS_EMULATOR needed to run javascript binaries, so we
don't set the CROSS_EMULATOR to some dummy value.
- - - - -
48345343 by Sven Tennie at 2026-06-20T23:42:52+02:00
Javascript skip T23697
See #22355 about how HSC2HS and the Javascript target don't play well
together.
- - - - -
5e44fd05 by Sven Tennie at 2026-06-20T23:42:52+02:00
Mark T24602 as fragile
It was skipped before (due to CROSS_EMULATOR being set, which changed
for JS), so we don't make things worse by marking it as fragile.
- - - - -
ab349ec2 by Sven Tennie at 2026-06-20T23:42:52+02:00
Fix T22744 for GHCJS
In fact, this test needs Template Haskell, not necessarily an
interpreter.
- - - - -
c73352d8 by Sven Tennie at 2026-06-20T23:42:52+02:00
haddock-test: fix GHCJS haddock test failures
Add --ghc-pkg-path flag support so haddock test runner can find
cross-prefixed ghc-pkg (e.g. javascript-unknown-ghcjs-ghc-pkg) which
is not on $PATH in cross install directories.
Skip haddockHtmlTest on GHCJS: Threaded.hs uses forkOS in a TH splice,
which GHCJS RTS doesn't support. Mark with js_skip in all.T.
- - - - -
5e814e76 by Andreas Klebinger at 2026-06-22T23:00:24-04:00
compiler: Deduplicate hscTidy
This function was accidentally duplicated during a refactor.
Fixes #27351
- - - - -
473b97eb by sheaf at 2026-06-22T23:01:22-04:00
Avoid mkTick in Core Prep breaking ANF (part II)
Hotfix for 2f9579765f55b3920ceb2e04995ff41a9d0e2d4e fixing a small
oversight in the call to tickTickedExpr from mkTick, in which we
improperly recursively called mkTick without passing on the preserve_anf
flag.
Fixes #27386
- - - - -
9284a1f7 by Simon Hengel at 2026-06-23T05:55:33-04:00
Don't use global variables to address concurrency bugs! (fixes #27234)
This was originally introduce with
88f38b03025386f0f1e8f5861eed67d80495168a to address #17922.
In this specific case a better fix would have been to synchronize on
stderr:
withHandle_ "stderrSupportsAnsiColors" stderr $ \ _ -> do
...
But apparently the dependency on `terminfo` was removed in
32ab07bf3d6ce45e8ea5b55e8095174a6b42a7f0, preventing #17922 in the first
place.
- - - - -
44309cd3 by Alan Zimmerman at 2026-06-23T05:56:20-04:00
EPA: remove LocatedL / SrcSpanAnnL and LocatedLI / SrcSpanAnnLI
This is part of a refactor towards only having LocatedA / SrcSpanAnnA
It removes the stated items, but has to add back one for BooleanFormula,
LocatedBF / SrcSpanAnnBF
This commit also use the HsConDetails RecCon extension point to
capture the braces in a record constructor
- - - - -
2f6a5534 by Simon Jakobi at 2026-06-23T15:46:20+02:00
Add -dstable-core-dump-order for stable Core dump ordering (#27296)
The order of top-level bindings in Core dumps (-ddump-simpl etc.) is the
compiler's Unique-sensitive internal processing order, so an unrelated
upstream change can reorder them and defeat a textual diff of two dumps.
This adds an opt-in flag -dstable-core-dump-order that reorders the
top-level bindings of dumps routed through dumpPassResult into a stable,
Unique-independent order, so two dumps line up across rebuilds. See
Note [Stable Core dump order] in GHC.Core.Ppr for the sort key and its
rationale.
Adds tests T27296 (binders GHC emits in non-source order by default,
asserted to come out stably ordered under the flag) and T27296b (an
untidied -ddump-float-out dump pinning the ordering of the anonymous lvl
floats by literal value).
Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com>
- - - - -
141986e3 by mangoiv at 2026-06-24T15:51:14-04:00
compiler: refactor error reporting code for ExplicitLevelImports
Refactors error reporting code for ExplicitLevelImports to pass in a
RdrName and a GlobalReaderElt to be able to report errors that are
faithful to the source and to more precisely distinguish between names
that are in scope from different qualifications.
Fixes #27385 and #26616
- - - - -
aa7df6b6 by Simon Hengel at 2026-06-24T15:52:18-04:00
Set GHC_VERSION when calling custom pre-processors (see #25952)
(so that pre-processors can emit backwards compatible code)
- - - - -
a9e494f2 by Simon Hengel at 2026-06-24T15:54:08-04:00
Add a flag to control GHCi specific error hints (close #27409)
- - - - -
a805b2a2 by Simon Hengel at 2026-06-24T15:55:20-04:00
Reference correct package in error messages for reexported modules
(fixes #27417)
- - - - -
f235d183 by Simon Jakobi at 2026-06-25T05:51:18-04:00
Add explicit setBit/clearBit/complementBit for instance Bits Integer (#21176)
The default setBit, clearBit, and complementBit methods allocate
intermediate Integers per call. Define them explicitly via the new
integerSetBit[#], integerClearBit[#] and integerComplementBit[#], built
on the BigNat# primitives, which avoid those allocations. Allocation is not
eliminated entirely -- the negative (IN) cases would need in-place mutation,
which is left as future work.
The default methods constant-folded on literal arguments via the
integerOr/integerAnd/integerXor rules, which fold literal Integers of any
size. The explicit functions have no such rule, so they (their Word-argument
wrappers, and the Bits Integer methods) are marked INLINE to expose the
underlying primops to the simplifier; see Note [INLINE for constant folding
of bit operations]. This restores folding only on the small-int (IS) path --
large literal Integers (IP/IN) are no longer constant-folded, a minor
regression for that case. T8832 covers the IS-path folding.
The new golden-output test T21176 checks all three operations against the
default implementations across the sign/size boundaries, recording each
result plus its integerCheck validity. The base and ghc-bignum interface-
stability export goldens gain the new functions.
The main changelog entry lives in changelog.d under a new ghc-internal
section (renamed from ghc-prim).
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/423
Co-Authored-By: Claude Opus 4.7 <noreply(a)anthropic.com>
- - - - -
202ed264 by Marc Scholten at 2026-06-25T05:52:21-04:00
haddock: use Text in documentation pipeline
This patch moves Haddock's documentation pipeline from String to Text
where the data is already textual. It avoids repeated conversions while
keeping the existing decoding behavior for invalid UTF-8 docstring
chunks.
The main changes are:
* Render and carry docstrings as Text in Haddock-facing paths.
* Use the Binary Text instance from GHC.Utils.Binary for Haddock
interface files, and bump the Haddock binary interface version.
* Add a FastString HTML instance so XHTML rendering avoids
intermediate String allocation.
* Keep HsDocStringChunk decoding lenient, matching the previous
unpackHDSC behavior on invalid UTF-8 input.
* Update the xhtml submodule to 3000.4.1.0, which contains the
apostrophe escaping fix used by the Haddock test output.
Co-authored-by: copilot-swe-agent[bot] <198982749%2BCopilot(a)users.noreply.github.com>
Co-authored-by: Claude Opus 4.5 <noreply(a)anthropic.com>
Assisted-by: Codex <codex(a)openai.com>
- - - - -
a72ff58f by mangoiv at 2026-06-25T05:53:07-04:00
compiler: rename ZonkAny to UnusedType and add pretty printing logic
ZonkAny is a hard to understand name for users who do not know how the
compiler works internally. Additionally, it is confusing that ZonkAny,
while being a concrete type *represents* a meta variable, espeically in
the compiler output.
This patch changes the name of ZonkAny to UnusedType which is closer to
its intended semantics and adds special pretty printing logic to display
this type in the same fashion the compiler displays meta variables in
other places, whenever they leak from the implementation to the user.
It also exports the type from ghc-internal:GHC.Internal.Types in order
to expose documentation.
Fixes #27390
Co-Authored-By: Sam Derbyshire <sam.derbyshire(a)gmail.com>
- - - - -
6813f002 by Simon Jakobi at 2026-06-26T04:51:47-04:00
Reg.Linear: drop Platform argument from most FR (FreeRegs) methods
The FR class has one instance per CPU architecture, so any
architecture-constant information its methods derived from the Platform
argument can instead be baked into the instance. This removes the now
needless Platform argument from frAllocateReg, frGetFreeRegs and
frReleaseReg.
frInitFreeRegs keeps its Platform argument: the initial allocatable set is
genuinely platform-dependent, see Note [Aarch64 Register x18 at Darwin and
Windows].
Fixes #26665
Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com>
- - - - -
3b2a9409 by Zubin Duggal at 2026-06-26T04:52:39-04:00
testsuite: Report fragile failures as skipped in JUnit output
- - - - -
27463426 by Rodrigo Mesquita at 2026-06-26T20:54:58-04:00
perf: Share Module in Iface Symbol Table
This commit modifies the structure of the serialized `SymbolTable Name`
to then re-use and share the `Module` (both on disk and in memory) across
all `Name`s from the same module.
The new structure looks like:
<total name count>
$modules.size
for (mod, names) in $modules:
$mod
$names.size
for table_ix, occ in $names
$table_ix
$occ
i.e. we put the module just once, followed by all names in that module.
When deserializing, we deserialize the module just once, and all the
following `Name`s are constructed with a pointer to that same decoded
`Module`.
In `hoogle-test`, we must use `DNameEnv` rather than `Map Name`,
otherwise the output fixities order was susceptible to changes in the
uniques assigned to each Names, which is not stable.
Fixes #27401
-------------------------
Metric Decrease:
InstanceMatching
LinkableUsage01
LinkableUsage02
hard_hole_fits
-------------------------
- - - - -
412f1675 by Simon Hengel at 2026-06-26T20:55:41-04:00
Rename `MCDiagnostic` to `InternalMCDiagnostic`
`MCDiagnostic` is meant to be used for compiler diagnostics.
Any code that creates `MCDiagnostic` directly, without going through
`GHC.Driver.Errors.printMessage`, sidesteps `-fdiagnostics-as-json` (see
e.g. !14616, !14475, !14492 !14548).
To avoid this in the future, this change more narrowly controls who
creates `MCDiagnostic` (see #24113).
- - - - -
6f212121 by Facundo Domínguez at 2026-06-26T20:56:27-04:00
Encapsulate options of occurAnalysePgm in a record
- - - - -
adfbb179 by Facundo Domínguez at 2026-06-26T20:56:27-04:00
Allow to configure the occurrence analyser to retain some dead bindings
This is needed by plugins that are the only consumers of a binding which
is otherwise unused in the program.
See Note [Controlling elimination of dead bindings in occurrence analysis]
added in this commit, or
https://gitlab.haskell.org/ghc/ghc/-/issues/27240 for more discussion.
- - - - -
c745b11f by Copilot at 2026-06-26T20:56:27-04:00
Address documentation feedback
- - - - -
2c2a4a2a by Copilot at 2026-06-26T20:56:27-04:00
Keep the imp_rules parameter of occurPgmAnalysePgm and add occ_opts to OccEnv
- - - - -
e2262b0e by Copilot at 2026-06-26T20:56:27-04:00
Strengthen T27240.hs with a binding that should be removed
- - - - -
5f9d9268 by Copilot at 2026-06-26T20:56:27-04:00
Move the reference #27240 to a related paragraph
- - - - -
d86d2644 by Simon Hengel at 2026-06-26T20:57:10-04:00
Remove deprecated flag `-ddump-json` (see #24113)
This was first deprecated in 9.10.1.
- - - - -
3b15ff03 by Simon Jakobi at 2026-06-27T18:48:34+02:00
Tweak mk_mod_usage_info
* Use O(log n) `elemModuleEnv` instead of O(n) `elem` to filter the
direct imports.
* Use `nonDetModuleEnvKeys` to avoid sorting the ent_map keys twice.
* Prepend the presumably shorter list when creating all_mods with
`(++)`. Actually this eliminates the `(++)` entirely, as it seems to
fuse with the `filter` expression.
As a result there is a tiny speed-up when generating the .hi-files for
modules with many imports.
None of the changes affect compilation determinism as the module list
is explicitly sorted to ensure a canonical order.
- - - - -
2d0fd154 by Alan Zimmerman at 2026-06-29T11:44:00-04:00
EPA: Remove LocatedC / SrcSpanAnnC
This is part of a cleanup of the zoo of
SrcSpanAnnXXX types for exact print annotations.
This one removes SrcSpanAnnC used for storing exact print annotations
for contexts. It replaces it with an explicit `HsContext` data type
that carries the annotations and the context.
So, replace
type HsContext pass = [LHsType pass]
with
type HsContext pass = HsContextDetails pass (LHsType pass)
data HsContextDetails pass arg
= HsContext
{ hsc_ext :: !(XHsContext pass)
, hsc_ctxt :: [arg]
}
| XHsContextDetails !(XXHsContextDetails pass)
We need the parameterised HsContextDetails because it is used both for
HsQual carrying 'LHsExpr p' and "normal" contexts carrying 'LHsType p'.
- - - - -
cca0d589 by Luite Stegeman at 2026-06-30T13:33:40-04:00
rts: handle large AP closures in compacting GC
The function update_fwd_large in the compacting GC could run into
an unexpected object with the following error:
internal error: update_fwd_large: unknown/strange object 24
Closure type 24 is the AP closure, which was not handled in
upd_fwd_large. This patch adds handling them.
fixes #27434
- - - - -
42935858 by Luite Stegeman at 2026-06-30T13:33:40-04:00
testsuite: use compacting_gc way instead of hardcoding +RTS -c
- - - - -
bf7b5ce6 by Alan Zimmerman at 2026-06-30T13:34:23-04:00
EPA: Remove LocatedLW from LStmtLR
HsDo already had its XDo extension point for an
AnnList, which also appeared in LocatedLW.
So we remove the redundant one and use the one inside HsDo
as originally intended.
Also delete LocatedLC/LocatedLS as they were unused
- - - - -
d7cfea49 by Recursion Ninja at 2026-06-30T21:37:12-04:00
Decoupling 'L.H.S' from 'GHC.Types.SourceText'
* Migrated 'IntegralLit' to 'L.H.S.Lit'.
* Migrated 'FractionalLit' to 'L.H.S.Lit'.
* Migrated 'StringLiteral' to 'L.H.S.Lit'.
* Added TTG extension points to the types above.
* Added nice export list to 'GHC.Hs.Lit'.
* Added 'rnOverLitVal' and 'tcOverLitVal' functions to 'GHC.Hs.Lit'.
* Added instance 'Anno (StringLiteral (GhcPass p)) = SrcSpanAnnN'
* Moved [Notes] about 'SourceText' from 'L.H.S.*' to 'GHC.*'.
* Removed all references to 'SourceText' from 'L.H.S'.
* Removed the trailing comma record field from 'StringLiteral'
* Renamed exported functions for nomenclature consistency.
* Deprecated the renamed functions
Fixes #26953
- - - - -
a1f2558b by Recursion Ninja at 2026-06-30T21:37:12-04:00
Monomorphising GHC pass parameters where appropriate
- - - - -
7bf9e3c5 by Teo Camarasu at 2026-06-30T21:38:03-04:00
Make Q abstract
This patch aims to clearly demarcate the internal and external interfaces
of Q.
In the past the `Quasi` typeclass was both part of the external,
public-facing interface, and was used to give the implementation of `Q`.
Now we separate out these two distinct roles. `Quasi` continues to exist
in the public interface, but we introduce a new `MetaHandlers` type,
which is equivalent to `Dict Quasi`.
`Q a` is now defined to be `MetaHandlers -> IO a`, and, crucially,
the constructor and the new `MetaHandlers` type are not exposed from the
public interface.
This gives us the ability to vary the interface on the GHC side without
forcing a breaking change on the `template-haskell` side.
Similarly `template-haskell` has more freedom to change the `Quasi`
typeclass without needing any changes in `lib:ghc`.
Implements https://github.com/ghc-proposals/ghc-proposals/pull/700
Resolves #27341
- - - - -
4262af36 by L0neGamer at 2026-06-30T21:38:56-04:00
generically defines mconcat in terms of internal type's Semigroup instance
add changelog entry
use simpler definition for mconcat
`nonEmpty` isn't available yet; inline branches in case
add test case
fixup generically defines mconcat in terms of internal type's Semigroup instance
add comment on Generically and deriving mishaps
swap mconcat to foldr version
add some strictness testing for mconcat
add to `base` changelog entry
- - - - -
e22ad997 by Cheng Shao at 2026-06-30T21:39:43-04:00
hadrian/rts: fix unregisterised build for gcc 15+
This patch fixes unregisterised build for gcc 15+:
- Pass -optc-Wno-error in hadrian when +werror enables -optc-Werror,
see added comment for details.
- For RTS functions that the codegen would emit calls, ensure their
real prototype is hidden when the header is included in .hc fies
(IN_STG_CODE), and the dummy prototype is provided to match the EFF_
convention.
In the future we should get rid of EFF_ (#14647) and remove these
hacks, but for now this patch makes unregisterised work again on newer
toolchains. Fixes #27404.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
3f00f234 by Cheng Shao at 2026-06-30T21:40:32-04:00
compiler: fix missing handling of CmmUnsafeForeignCall node in LayoutStack
This patch fixes missing handling of `CmmUnsafeForeignCall` middle
node in the `LayoutStack` pass.
Before proc-points splitting, this pass computes liveliness of local
registers, and spills those alive across a Cmm native call onto the
stack. It need to traverse all middle nodes in each block and check
whether a local register is an assignee, if so then the previous
mapping in `sm_regs` is invalidated and needs to be dropped. However,
it didn't handle `CmmUnsafeForeignCall` node which may also assign to
a local register. When proc-points splitting is enabled, this can
produce an invalid basic block that doesn't properly backup the
updated local register to the stack before doing a Cmm call, resulting
in completely invalid runtime behavior.
The patch also adds a `T27447` regression test. With no-TNTC or with
LLVM backend, without the fix the test case would output a stale
0x1111111111111111 value, instead of the expected 0x2222222222222222
output.
Fixes #27447.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
701088db by Ben Gamari at 2026-07-01T10:34:03-04:00
gitlab-ci: Drop vestigial references to make build system
- - - - -
62d54a53 by Ben Gamari at 2026-07-01T10:34:03-04:00
gitlab-ci: Add support for running specifying a job's testsuite ways
- - - - -
7f97ac2c by Ben Gamari at 2026-07-01T10:34:03-04:00
gitlab-ci: Run llvm testsuite ways in llvm jobs
Addresses #25762.
- - - - -
7ea75116 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Add normalise_ddump_deriv setup function
Some tests check the result of -ddump-deriv, which may contain INLINE pragmas depending on optimization flags.
With normalise_ddump_deriv setup function, INLINE pragmas are stripped off.
- - - - -
c7a8199f by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Use -dsuppress-idinfo to make tests more robust
Previously, T18052a and T21755 were failing on 'optasm' and 'optllvm' ways because of visibility of unfoldings.
- - - - -
a12122e5 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Use a trick to keep large objects alive
Previously, T17574 and T19381 were failing on 'optasm' and 'optllvm' ways because of compiler optimizations.
Change them to use NOINLINE to prevent unwanted optimizations.
- - - - -
1a95b327 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Only run T24224 in 'normal' way
This test is a frontend-only one and breaks if optimizations are enabled.
- - - - -
8abea737 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Ignore T18118's stderr
When optimizations are enabled, the compiler emits a warning (You cannot SPECIALISE ...).
The message is not important, so ignore it.
- - - - -
9453a722 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Mark T816 and tc216 broken with optimizations
These tests are about type checking, so we should not care too much if they are broken with optimizations.
See #26952
- - - - -
0aef9ec0 by Ben Gamari at 2026-07-01T10:34:03-04:00
testsuite: ds014 is not longer broken
It now appears to pass in the ways it was marked as broken in.
Closes #14901.
- - - - -
4692d1e4 by Ben Gamari at 2026-07-01T10:34:03-04:00
testsuite: Only run stack cloning tests in the normal way
These are too dependent upon code generation specifics to pass in most
other ways.
- - - - -
c154df26 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Update options_ghc_fbyte-code
The `-fbyte-code` option used to be overriden by `-fllvm` but it is no longer true since !14872 was merged.
I updated the test to accept the new behavior.
Closes #27049
- - - - -
5d8bb7b5 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Only run T22744 in 'normal' way
This test takes a long time on optimized ways.
- - - - -
d1e74c8e by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Disable tests that use -finfo-table-map on llvm ways
Currently, -finfo-table-map does not work with -fllvm. See #26435
- - - - -
3bf38c84 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Don't run T24726 on optimized ways
If optimizations are enabled, the rewrite rule just fires and -drule-check will report nothing.
- - - - -
e4eef116 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Use -fno-unoptimized-core-for-interpreter when running LinkableUsage01/02
Optimizations for the bytecode interpreter are considered experimental, and need a flag to be enabled.
- - - - -
234a9872 by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Suppress unwanted optimizations on T25284
- - - - -
99a2af2f by ARATA Mizuki at 2026-07-01T10:34:03-04:00
testsuite: Don't run stack_big_ret with optimizations
Stack layout may change with optimizations enabled.
- - - - -
04c836df by ARATA Mizuki at 2026-07-01T10:34:04-04:00
testsuite: Mark memo001 broken on optimized ways
See #27396
- - - - -
1a8a24f4 by ARATA Mizuki at 2026-07-01T10:34:04-04:00
testsuite: Mark syn-perf broken on optimized ways
See #27398
- - - - -
40412093 by Duncan Coutts at 2026-07-01T10:34:50-04:00
Add a test for thread scheduler fairness
It also tests that the interval timer and context switching works.
We also test that fairness is lost when the context switching interval
is too coarse for the duration of the test.
We add this test before doing surgery on the interval timer, so we have
decent coverage.
- - - - -
3f34d557 by Duncan Coutts at 2026-07-01T10:34:50-04:00
Make exported stop/startTimer no-ops, and rename internal functions
Specifically, internally rename:
stop/startTimer to pause/unpauseTimer
stop/startTicker to pause/unpauseTicker
and keep stop/startTimer as exported functions, but now as no-ops.
In the past the stop/startTicker actions were used incorrectly as if
they were synchronous, which they are not. See issue #27105. We now
document pause/unpackTicker as being async and not to be used for the
purpose of concurrency safety.
The existing stop/startTimer (note Timer not Ticker, the Timer calls the
Ticker!) are also exported from the RTS as a public API. This was
historically because the ticker used signals and it was important to
suspend the timer signel over a process fork. So these functions were
exported to be used by the process and unix libraries.
We cannot just remove the RTS exports, but we now make them no-ops, and
they can be removed from the process and unix library later. This
was already documented in a changelog.d entry no-more-timer-signal but
due to changes during the MR process the change to make stop/startTicker
into no-ops didn't make it into the earlier MR.
- - - - -
02e84e5f by Duncan Coutts at 2026-07-01T10:34:51-04:00
Make exitTicker/exitTimer unconditionally synchronous
We never use them asynchronously, and we should never need to do so.
And update some related comments.
- - - - -
13db6a72 by Duncan Coutts at 2026-07-01T10:34:51-04:00
posix ticker: update and improve comments on (un)pause and exit
Clarify what is async vs sync.
- - - - -
43d9a07d by Duncan Coutts at 2026-07-01T10:34:51-04:00
posix ticker: split out ppoll/select helper functions
Move the #ifdefs out of the main code body by introducing local helper
functions and types, which themselves have two implementations (with a
common API) based on ppoll or select.
This helps improve clarity/readability.
- - - - -
a5491baa by Duncan Coutts at 2026-07-01T10:34:51-04:00
posix ticker: improve the implementation
The existing implementation supported pausing and exiting, with the
implementation of pausing reling on a mutex and condition variable.
It needed to check the pause and stop shared variables on every
iteration. It relies on ppoll or select, to wait on the timeout and also
wait on an interrupt fd. The interrupt fd was only used for prompt
exit/shutdown, and not for pausing or other notification. The pause only
needed a lock and a memory operation, but the pause was not prompt. The
resume used a lock, and signaling a cond var.
The new implementation uses a somewhat more regular design: every
notification is done by setting a shared variable and
interrupting/notifying the ticker via the fd. The ticker thread does not
need to check any shared variables on normal timer expiry, only when it
recevies notification. This may be a micro-optimisation, but the tick
occurs 100 times a second by default so any improvements in the hot path
are amplified. When the ticker thread does receive notification it can
check the various shared variables and update its local state. The
blocking relies on using ppoll/select but without a timeout. This avoids
the condition var and also allows further notifications when paused
(also used for unpausing).
This design can be extended with further notification types if needed by
using and checking further shared vars (or making existing shared vars
an enum or counter). This may be used in future for additional
notifications to the ticker thread. This will likely be used to proxy
wakeUpRts from a single handler context for example. And this approach,
avoiding mutexes, is compatible with use from signal handlers.
So overall, it's:
* slightly simpler / more regular;
* easier to extend with additional notifications;
* probably slightly more efficient (but a micro-optimisation);
* and supports calling notification from signal handlers
- - - - -
5b20821e by Duncan Coutts at 2026-07-01T10:34:51-04:00
posix ticker: further minor local renaming for code clarity
Improve the clarity with better choice of names for several local vars
and function.
- - - - -
1f3ec5e0 by Duncan Coutts at 2026-07-01T10:34:51-04:00
win32 ticker: split out local helper functions
- - - - -
596e7307 by Duncan Coutts at 2026-07-01T10:34:51-04:00
win32 ticker: provide guarantee about concurrency and idempotency
Use a lock to ensure pause/unpause can be used concurrently. Use a
paused variable, protected by the lock, to ensure that pause and unpause
are both idempotent. This is what the portable API expects.
- - - - -
1870edd7 by Duncan Coutts at 2026-07-01T10:34:51-04:00
win32 ticker: make the initial tick be after one wait interval
There is no need to tick immediately. This is consistent with the
posix implementation.
- - - - -
7c15ab5b by Duncan Coutts at 2026-07-01T10:34:51-04:00
ticker: remove now-unnecessary layer of enable/disable
There was an atomic variable used to block *part* of the actions of the
tick handler. This still did not make stopTimer synchronous, even for
the part of the the handle_tick actions it covered. It also added a more
expensive (sequentuially consistent) atomic operation in the hot path
for the handle_tick action, whereas our new design requires no atomic
ops at all.
Now that we have eliminate the need for synchronous stop/startTicker,
we don't need this not-quite-working-anyway atomic protocol. The new
pause/unpauseTicker is explicitly asynchronous and idempotent.
- - - - -
8585f8cb by Duncan Coutts at 2026-07-01T10:34:51-04:00
ticker: add TODOs about issue #27250: too much being done from handle_tick
The handle_tick should not perform I/O, block, perform long-running
operations or call arbitrary user code. Unfortunately, everything to
do with the eventlog (at the moment) falls into all those categories.
- - - - -
6e381626 by Duncan Coutts at 2026-07-01T22:29:55+01:00
Adjust releaseCapability_ precondition to allow cap->running_task == NULL
There are two use cases for releaseCapability_:
1. The current Task (cap->running_task) releases the Capability.
The Capability is marked free, and if there is any work to do,
an appropriate Task is woken up.
2. There is no current task (cap->task == NULL), and thus the
Capability is idle, and we want to wake up an idle Task to animate
the Capability. This case uses always_wakeup.
Currently, the precondition for releaseCapability_ is
cap->running_task != NULL
and so the 2nd use cases have to set cap->running_task (which is then
immediately overwritten) just to satisfy the precondition. See the
use cases in sendMessage and prodCapability.
So we can relax the precondition to be:
cap->running_task != NULL || always_wakeup
so that in the always_wakeup case, we say it is ok for the
cap->running_task to be NULL.
This lets us simplify sendMessage and prodCapability. In particular it
will allow prodCapability to not need a Task parameter.
The ulterior motive for all this is that I want to be able to call
prodCapability from an OS thread that is not itself a Task, in persuit
of issue #27086: disentangle I/O managers from wakeUpRts. The most
straightforward way to wake the RTS is using prodCapability, but the
context in which we will need to do that are threads that are not Tasks.
- - - - -
89404ebc by Duncan Coutts at 2026-07-01T22:29:55+01:00
prodCapability no longer needs to take a Task param
Now that releaseCapability_ can accept cap->running_task == NULL then it
is no longer necessary for prodCapability to require a Task.
- - - - -
4e60c5f6 by Duncan Coutts at 2026-07-01T22:29:56+01:00
Define prodOneCapability
There was an existing declaration for this in the header file, but no
definition.
Similarly, there is a declaration for prodAllCapabilities but no
definition, and we don't need it, so remove the declaration.
- - - - -
2527026f by Duncan Coutts at 2026-07-01T22:29:56+01:00
Add a wakeUpRtsViaTicker feature to the posix ticker
It proxies a call to wakeUpRts, but crucially, this can be called from
a signal handler context. It will be used for ctl-c handling.
- - - - -
aa5a03a5 by Duncan Coutts at 2026-07-01T22:29:56+01:00
Change how wakeUpRts works
Previously it would call wakeupIOManager to get a capability to wake up
and run. This works but it entangles the I/O managers with unrelated
features: ctl-c handling and idle gc (the two features that use wakeUpRts).
The reason it used wakeupIOManager is that this action is safe to use
from a posix signal handler, since it just posts bytes to a pipe.
Otherwise the more direct approach (used e.g. by sendMessage when the
target capability is idle) is to use releaseCapability. But that uses
condition variables and mutexes, which are not safe to use from within a
signal handler.
So instead of entangling the (multiple) I/O managers with this, we make
wakeUpRts use the direct approach (using prodOneCapability). On win32
the ctl-c console handler can call wakeUpRts directly, since it is
called in a proper thread. On posix, to deal with the signal handler
problem, we make the signal handler ask the ticker thread to proxy the
call to wakeUpRts, since the ticker thread is also a proper thread.
This will allow the I/O managers to no longer be concerned with this.
This is good because there are many I/O managers (and they're
complicated), but there is (on posix) only one ticker implementation. So
this is an overall reduction in coupling and complexity.
Fixes issue #27086
- - - - -
c6d53c16 by sheaf at 2026-07-02T21:35:44-04:00
Test driver: normalise line numbers into libraries
When comparing the stdout of tests that print out callstacks, we can't
rely on the stability of exact line:column spans pointing into libraries
(e.g. ghc-internal), as any change (such as adding a comment) can change
them.
This commit addresses this by normalising away line:column in callstacks,
but only when those point into internal libraries. We don't do this in
general, as the exact span might be important to the test (e.g. for a
span within the test module itself).
Fixes #27387
- - - - -
81ee62e0 by Alan Zimmerman at 2026-07-02T21:36:33-04:00
EPA: Remove LocatedLW from MatchGroup
This is the last usage of LocatedLW / SrcSpanAnnLW
- - - - -
925959db by Recursion Ninja at 2026-07-04T04:14:12-04:00
Decoupling 'L.H.S' from 'GHC.Hs.Doc'
* Migrated 'GHC.Hs.Doc' and 'GHC.Hs.DocString' AST defintions from 'GHC.*' namespace,
to new 'Language.Haskell.Syntax.Doc' module in the 'L.H.S' "namespace."
* Updated 'HsDocString to be TTG-parameterised as 'HsDocString pass'.
* Added 'GHC.Hs.Extension.Pass': splits 'GhcPass'/'Pass' and all 'HsDocString'
TTG instances out of 'GHC.Hs.Extension', which re-exports it unchanged
(this is backwards compatible and prevents the introduction of a boot file).
* Deleted 'GHC.Hs.Doc.hs-boot'; removed all 'L.H.S.*' imports of 'GHC.Hs.Doc'.
* Updated 'GHC.Hs.DocString' to be TTG pass-parameterised throughout; moved
'mkHsDocStringChunk'/'unpackHDSC' here (require 'GHC.Utils.Encoding').
* Split 'GHC.Rename.Doc.rnHsDoc' from 'rnHsDocIdentifiersOnly'.
* Updated parser, renamer, typechecker, HIE, and exact-print for new types.
* Added 'HsDocString' TTG instances for 'DocNameI' to 'Haddock.Types'.
* Killed the last module loop between GHC.* and LHS.*.
- Only edges from LHS.* to GHC.Data.FastString now!
Resolves #26971
- - - - -
b7e24044 by mangoiv at 2026-07-04T04:14:56-04:00
ci: retry fetching test metrics
Retry fetching test metrics to make the CI not fail if the services is
temporarily unavailable
- - - - -
4180af3f by Zubin Duggal at 2026-07-04T04:15:38-04:00
Bump semaphore-compat submodule to 2.0.1
This versions includes some cruicial fixes for darwin
- - - - -
242d4317 by sheaf at 2026-07-04T04:16:19-04:00
Remove outdated comment in GHC.Data.ShortText
There was a long comment in GHC.Data.ShortText about a workaround that
was necessary when bootstrapping with GHC 9.2 and below. The actual
logic has since been dropped, but the comment remained. This commit
removes the vestigial comment.
- - - - -
9b714c4c by Zubin Duggal at 2026-07-05T09:40:36+05:30
CorePrep: Don't speculatively evaluate bindings that we have already discovered to be absent
In #25924, we segfault because speculation forces a projection out of a RUBBISH dictionary
(which we generated because it absent).
Solution: Don't speculate on bindings we already know are absent.
Fixes 25924
- - - - -
4a59b3ee by Zubin Duggal at 2026-07-05T09:40:36+05:30
Don't make absent fillers for terminating types
In #25924 we discovered that we could speculatively evaluate an absent filler
for a dictionary, and project a field (a superclass selector) out of it,
resulting in segfaults.
Solution: Never make an absent filler or rubbish literal for a terminating type
like a dictionary. mkAbsentFiller returns Nothing for isTerminatingType, so
worker/wrapper and the specialiser keep the real argument instead.
Some small metric decreases because we do a little less work in the
simplifier now.
Metric Decrease:
T9872a
T9872b
T9872c
TcPlugin_RewritePerf
- - - - -
383ddcd4 by Alan Zimmerman at 2026-07-06T07:08:16-04:00
EPA: Move the 'where' annotation for PatSynBind
This allows us to move it out of the MatchGroup exact print annotation
too
- - - - -
66d1a5d5 by fendor at 2026-07-07T16:57:56-04:00
Add 'backendInfoTableMapValidity' backend predicate
Check whether the backend supports the `-finfo-table-map` flag and
ignore it otherwise.
Improve by-design documentation of `backendCodeOutput`.
`Backend` is **abstract by design**. Make this clearer in
`backendCodeOutput` which is incorrectly being used as a proxy for
`Backend`.
Instead, define the desired property predicates in GHC.Driver.Backend
In the process, make `backendCodeOutput` total.
- - - - -
74f1071d by fendor at 2026-07-07T16:57:56-04:00
Add failing test for `-finfo-table-map` and bytecode backend
If you compile a module using the bytecode backend, with
-finfo-table-map, then the info table map doesn't get populated for the
module.
This is because the -finfo-table-map code path is implemented mostly in
the StgToCmm phase which isn't run when creating bytecode.
Ticket #27039
- - - - -
28d63bca by mangoiv at 2026-07-07T16:59:16-04:00
ci: don't fail nightly if there have been no changes that night
Fixes #27127
- - - - -
4ebfc478 by Rodrigo Mesquita at 2026-07-08T04:47:53-04:00
ttg: Using ShortText over FastString in the AST
To make the AST independent of GHC, this commit replaces usages of
`FastString` with `HText` in the AST, killing the last edge from
Language.Haskell.* to GHC.* modules.
Even though we /do/ want to use FastStrings in general -- critically in
Names or Ids -- there is no particular reason for the FastStrings that
occur in the AST proper to be FastStrings. Strings in the AST are
typically unique and don't benefit particularly from being interned
FastStrings with Uniques for fast comparison.
`HText` is a type synonym for `ShortText` which uses GHC's Modified
UTF-8 encoding exclusively.
Modified UTF-8 must be used to represent the Haskell AST because the
Haskell Report allows surrogate code points. `Data.Text.Text` functions
use Standard UTF-8 which replace surrogates with a placeholder value,
thus `Data.Text.Text` is unsuitable for AST strings. See the
`Language.Haskell.Syntax.Text` module header for more details.
Final progress towards #21592
Closes #21628
- - - - -
d910b353 by Simon Peyton Jones at 2026-07-08T04:48:36-04:00
Update equality-type documenation in GHC.Builtin.Types.Prim
Fix #27466
- - - - -
b2530542 by Simon Peyton Jones at 2026-07-08T04:48:36-04:00
Honour -dsuppress-coercions in GHC.Core.TyCo.pprCo
Fixes #27467
- - - - -
9a73179a by Facundo Domínguez at 2026-07-08T04:49:26-04:00
Add item to MR checklist asking to squash fixup commits after approval
The checklist has an item that reads
All commits are either individually buildable or squashed.
This item could be checked immediately after sending the merge request
though. If reviewers ask for amends later on, and the author amends
the merge request, there was no item that would remind the contributors
to squash the fixup commits before landing.
This commit adds a new item
After all approvals and before landing: all fixup commits are squashed with their originating commits.
which should be harder to mark as done before approvals have been given.
- - - - -
ed09895d by Andreas Klebinger at 2026-07-08T16:53:27-04:00
Fix a profiling race condition resulting in segfaults.
StgToCmm: Don't assume tagged FUN closures in closureCodeBody.
When entering a closure the self/node pointer might not be tagged in
some situations when a thunk is evaluated by multiple threads.
So we most AND away the tag bits rather than subtracting an expected tag.
Apply.cmm: Fix a race condition occuring when a thunk is mutated during GC.
In stg_ap_0_fast when might need to run GC before entering a thunk. If this happens
another thread or the GC itself might mutate the closure making entering it no longer
valid. We now check for this.
Add test and changelog for #27123 fixes.
- - - - -
67c03eb2 by Cheng Shao at 2026-07-08T16:54:09-04:00
ghc-heap: fix invalid srtlen returned by peekItbl when no-TNTC
This patch fixes the no-TNTC code path of `peekItbl` so that it looks
at the right memory address when reading the `srt` field from the
`StgInfoTable_` struct. Also adds a `T27465` regression test that
reproduces the bug on no-TNTC builds before the fix. Fixes #27465.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
ad45c633 by Simon Peyton Jones at 2026-07-09T10:56:06+01:00
Fix evaluated-ness bug in Simplifier
This fixes #26548, an error which meant that we were failing to
attach evaluated-ness flags to case-alternative-bound variables
- - - - -
681d6b76 by Simon Peyton Jones at 2026-07-09T10:56:06+01:00
Be a little less eager to inline
---> OtherCon [] = TrivArg
OtherCon _ = NonTrivArg
Make inlining a tiny bit more eager
---> OtherCon [] = NonTrivArg
In particular
x = mkSymMCo mco
where mco is evaluated. We want that to inline, especially if the
let is strict. Makes a significant difference in Rewrite.hs,
Test case T9872b
OtherCon [] arguments aren't interesting
---> OtherCon [] = TrivArg
Remove white space
Be a little less keen to inline
This commit changes interestingArg to treat lambda as NonTrivArg
rather than ValueArg. That makes parser combinators a bit less
keen to inline. E.g.
<|> p1 p2 = \x -> case p1 x of
Yes -> ...
No -> ...
If we have a call (<|> arg1 arg2) where arg1 is a parser, and hence
often visibly a lambda, it's no so great to inline <|>, because we
are still stuck on x.
This affects for example T17516
Just an experiment.
- - - - -
460efe6e by Simon Peyton Jones at 2026-07-09T10:56:28+01:00
Wibbles
In particular, a lambda is a value argument in interestingArg
For some reason I had changed this and it made many things worse
This wibble puts it back!
- - - - -
5baf83ea by Simon Peyton Jones at 2026-07-09T10:56:28+01:00
Tracing in SpecConstr only
- - - - -
7117e6eb by Simon Peyton Jones at 2026-07-09T10:56:28+01:00
Lambda arguments are values in interestingArg
This matters a lot!!!
- - - - -
b654439e by Simon Peyton Jones at 2026-07-09T10:56:28+01:00
Make OtherCon unfoldings more eager to inline (again)
New code:
OtherCon [] -> NonTrivArg -- It's evaluated, but that's all we know
OtherCon _ -> ValueArg -- Evaluated and we know it isn't these constructors
-- See (IA2) in Note [Interesting arguments]
Reasons explained in (IA2), in `GHC.Internal.Bignum.Integer`.
Also (for OtherCon []): in the compiler itself
x = mkSymMCo mco
where mco is evaluated. We want mkSymMCo to inline, especially if the
let is strict. Makes a significant difference in Rewrite.hs,
Test case T9872b
- - - - -
2251ee99 by Simon Peyton Jones at 2026-07-09T10:56:29+01:00
Once again try
OtherCon [] -> TrivArg -- It's evaluated, but that's all we know
Reason: much fruitless inlining of maMB in T18140, pushes up
compile times
- - - - -
2239 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/flake.lock
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/issue_templates/default.md
- + .gitlab/issue_templates/release_tracking.md
- .gitlab/jobs.yaml
- .gitlab/merge_request_templates/Default.md
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- .gitlab/test-metrics.sh
- .gitmodules
- boot
- + changelog.d/26616
- + changelog.d/AbstractQ
- + changelog.d/T15973
- + changelog.d/T17833
- + changelog.d/T19174.md
- + changelog.d/T21176
- + changelog.d/T21628
- + changelog.d/T25636
- + changelog.d/T26978
- + changelog.d/T26979
- + changelog.d/T27022
- + changelog.d/T27046
- + changelog.d/T27047
- + changelog.d/T27121.md
- + changelog.d/T27123.md
- + changelog.d/T27124.md
- + changelog.d/T27131
- + changelog.d/T27182.md
- + changelog.d/T27202
- + changelog.d/T27225
- + changelog.d/T27261
- + changelog.d/T27308
- + changelog.d/T27317
- + changelog.d/T27359
- + changelog.d/T27386
- + changelog.d/add_can_drop_to_occurence_analyser
- + changelog.d/binary-array-no-list
- + changelog.d/bump-process
- + changelog.d/bytecode-interpreter-hpc-support
- + changelog.d/changelog-entries
- + changelog.d/cmm-import-syntax-changes
- + changelog.d/config
- + changelog.d/deterministic-usage-order
- + changelog.d/dynamic-trace-flags
- + changelog.d/elem-via-foldr-27096
- + changelog.d/fix-absent-dict-projection
- + changelog.d/fix-blackhole-handling
- + changelog.d/fix-compacting-gc-ap-27434
- + changelog.d/fix-duplicate-pmc-warnings
- + changelog.d/fix-exponential-case-desugar-27383
- + changelog.d/fix-finalizers-27072
- + changelog.d/fix-ghci-duplicate-warnings-26233
- + changelog.d/fix-layout-stack-fcall
- + changelog.d/fix-peekitbl-no-tntc
- + changelog.d/fix-plugin-finder-multi-home-unit.md
- + changelog.d/fix-unreg
- + changelog.d/generically-mconcat
- + changelog.d/ghc-api-epa-parens
- + changelog.d/ghc-api-holes-ast-27111
- + changelog.d/ghc-api-namespace-specifier-26678
- + changelog.d/ghc-pkg-faster-closure
- + changelog.d/ghc-pkg-long-path-support
- + changelog.d/hadrian-response-files.md
- + changelog.d/hadrian-stale-package-confs-26661
- + changelog.d/hadrian-system-cxx-std-lib-25303
- + changelog.d/hadrian-warn-missing-package-index-16484
- + changelog.d/interactive-error-hints
- + changelog.d/ipe-event-class
- + changelog.d/jobserver-leak-fix
- + changelog.d/lib-add-tuple-tyfam-27179
- + changelog.d/libdir-setting
- + changelog.d/llvm-22
- + changelog.d/module-graph-reuse-in-downsweep
- + changelog.d/more-efficient-home-unit-imports-finding
- + changelog.d/no-more-timer-signal
- + changelog.d/pp-set-ghc-version
- + changelog.d/reexported-module-errors
- + changelog.d/remove-bignum-check-backend
- + changelog.d/remove-bignum-ffi-backend
- + changelog.d/remove-ddump-json-flag
- + changelog.d/rts_symlinks.md
- + changelog.d/semaphore-v2
- + changelog.d/simd_constant_folding
- + changelog.d/skip-test
- + changelog.d/so_inline_is_a_predicate
- + changelog.d/stable-core-dump-order-27296
- + changelog.d/stage2-cross-compilers
- + changelog.d/tag-inference-27005
- + changelog.d/tcplugin_init.md
- + changelog.d/tcplugins-pmc.md
- + changelog.d/tool-messages-27370
- + changelog.d/typecheckModule-API.md
- + changelog.d/unused-type
- + changelog.d/wasm-fix-serviceworker
- + changelog.d/windows-rethrow-overlapped-exception
- + changelog.d/withTcPlugins.md
- compiler/.hlint.yaml
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types/Prim.hs
- compiler/GHC/Builtin/Utils.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- + compiler/GHC/ByteCode/Binary.hs
- compiler/GHC/ByteCode/Breakpoints.hs
- compiler/GHC/ByteCode/InfoTable.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- + compiler/GHC/ByteCode/Recomp/Binary.hs
- compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Dataflow/Graph.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Liveness.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Type.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/AArch64/Regs.hs
- compiler/GHC/CmmToAsm/BlockLayout.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/CmmToAsm/LA64/Regs.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/PPC/Regs.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/RV64/Instr.hs
- compiler/GHC/CmmToAsm/RV64/Ppr.hs
- compiler/GHC/CmmToAsm/RV64/Regs.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
- compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
- compiler/GHC/CmmToAsm/Reg/Linear/X86.hs
- compiler/GHC/CmmToAsm/Reg/Linear/X86_64.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToAsm/X86/RegInfo.hs
- compiler/GHC/CmmToAsm/X86/Regs.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Config.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/CmmToLlvm/Mangler.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/Lint.hs
- + compiler/GHC/Core/Lint/SubstTypeLets.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/FloatOut.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- + compiler/GHC/Core/Opt/Range.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Inline.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Opt/WorkWrap.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/RoughMap.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/Tidy.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/TyCon/Env.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/AddImplicitBinds.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/BooleanFormula.hs
- compiler/GHC/Data/FastString.hs
- compiler/GHC/Data/FastString/Env.hs
- compiler/GHC/Data/IOEnv.hs
- compiler/GHC/Data/List/NonEmpty.hs
- compiler/GHC/Data/List/SetOps.hs
- compiler/GHC/Data/Pair.hs
- compiler/GHC/Data/StringBuffer.hs
- compiler/GHC/Data/TrieMap.hs
- compiler/GHC/Data/Word64Map/Internal.hs
- compiler/GHC/Data/Word64Map/Lazy.hs
- compiler/GHC/Data/Word64Map/Strict.hs
- compiler/GHC/Data/Word64Map/Strict/Internal.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config.hs
- compiler/GHC/Driver/Config/CmmToLlvm.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Interpreter.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Hooks.hs
- compiler/GHC/Driver/Main.hs
- + compiler/GHC/Driver/Main/Compile.hs
- compiler/GHC/Driver/Main.hs-boot → compiler/GHC/Driver/Main/Compile.hs-boot
- + compiler/GHC/Driver/Main/Hsc.hs
- + compiler/GHC/Driver/Main/Interactive.hs
- + compiler/GHC/Driver/Main/Passes.hs
- + compiler/GHC/Driver/Main/Passes.hs-boot
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeAction.hs
- compiler/GHC/Driver/MakeSem.hs
- compiler/GHC/Driver/Phases.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Pipeline/Monad.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Driver/Session/Units.hs
- compiler/GHC/Hs.hs
- compiler/GHC/Hs/Basic.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Doc.hs
- − compiler/GHC/Hs/Doc.hs-boot
- compiler/GHC/Hs/DocString.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Expr.hs-boot
- compiler/GHC/Hs/Extension.hs
- + compiler/GHC/Hs/Extension/Pass.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Stats.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Coverage.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Wasm.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match.hs-boot
- compiler/GHC/HsToCore/Match/Constructor.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Types.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Errors.hs
- compiler/GHC/Iface/Errors/Ppr.hs
- compiler/GHC/Iface/Errors/Types.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Types.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Iface/Warnings.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Linker/ByteCode.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Executable.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Linker/Unit.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/HaddockLex.x
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- compiler/GHC/Parser/Types.hs
- compiler/GHC/Platform.hs
- + compiler/GHC/Platform/Tag.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Doc.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Expr.hs-boot
- compiler/GHC/Rename/Fixity.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Lit.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Splice.hs-boot
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Debugger/Breakpoints.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Eval/Types.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Runtime/Interpreter/Types/SymbolCache.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/Constants.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/Debug.hs
- compiler/GHC/Stg/EnforceEpt.hs
- compiler/GHC/Stg/EnforceEpt/Rewrite.hs
- compiler/GHC/Stg/EnforceEpt/TagSig.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/Stg/Lint.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/Closure.hs
- compiler/GHC/StgToCmm/DataCon.hs
- compiler/GHC/StgToCmm/Env.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/Foreign.hs
- compiler/GHC/StgToCmm/Heap.hs
- compiler/GHC/StgToCmm/InfoTableProv.hs
- compiler/GHC/StgToCmm/Layout.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/Prof.hs
- compiler/GHC/StgToCmm/Ticky.hs
- compiler/GHC/StgToCmm/Utils.hs
- compiler/GHC/StgToJS/FFI.hs
- compiler/GHC/StgToJS/Ids.hs
- compiler/GHC/StgToJS/Literal.hs
- compiler/GHC/StgToJS/Prim.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/SysTools/Process.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/SysTools/Terminal.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Deriv/Infer.hs
- compiler/GHC/Tc/Deriv/Utils.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole.hs
- compiler/GHC/Tc/Errors/Hole/FitTypes.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Do.hs
- + compiler/GHC/Tc/Gen/Expand.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Expr.hs-boot
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Match.hs-boot
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Instance/FunDeps.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/FunDeps.hs
- compiler/GHC/Tc/Solver/Rewrite.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/Solver/Types.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Build.hs
- compiler/GHC/Tc/TyCl/Class.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/TyCl/Utils.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/BasicTypes.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/CtLoc.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/LclEnv.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/Origin.hs-boot
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/TcType.hs-boot
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/FieldLabel.hs
- compiler/GHC/Types/ForeignCall.hs
- compiler/GHC/Types/ForeignStubs.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/HpcInfo.hs
- compiler/GHC/Types/Id.hs
- compiler/GHC/Types/Id/Info.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Literal.hs
- + compiler/GHC/Types/Literal/Floating.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Name/Env.hs
- compiler/GHC/Types/Name/Occurrence.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/Name/Set.hs
- compiler/GHC/Types/PkgQual.hs
- compiler/GHC/Types/RepType.hs
- compiler/GHC/Types/SourceError.hs
- compiler/GHC/Types/SourceText.hs
- compiler/GHC/Types/SrcLoc.hs
- compiler/GHC/Types/Tickish.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Types/Unique/DFM.hs
- compiler/GHC/Types/Unique/DSet.hs
- compiler/GHC/Types/Unique/FM.hs
- compiler/GHC/Types/Unique/Supply.hs
- compiler/GHC/Types/Var/Env.hs
- + compiler/GHC/Types/Var/FV.hs
- compiler/GHC/Types/Var/Set.hs
- compiler/GHC/Unit.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Finder/Types.hs
- compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Home/ModInfo.hs
- compiler/GHC/Unit/Info.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/Env.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/Location.hs
- compiler/GHC/Unit/Module/ModGuts.hs
- compiler/GHC/Unit/Module/Status.hs
- compiler/GHC/Unit/Module/Warnings.hs
- compiler/GHC/Unit/State.hs
- + compiler/GHC/Unit/State.hs-boot
- compiler/GHC/Unit/Types.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/EndoOS.hs
- compiler/GHC/Utils/Error.hs
- − compiler/GHC/Utils/FV.hs
- compiler/GHC/Utils/Logger.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/GHC/Utils/Ppr/Colour.hs
- compiler/GHC/Utils/Trace.hs
- compiler/GHC/Wasm/ControlFlow/FromCmm.hs
- compiler/Language/Haskell/Syntax.hs
- compiler/Language/Haskell/Syntax/Basic.hs
- compiler/Language/Haskell/Syntax/Binds.hs
- compiler/Language/Haskell/Syntax/Binds/InlinePragma.hs
- compiler/Language/Haskell/Syntax/Decls.hs
- compiler/Language/Haskell/Syntax/Decls/Foreign.hs
- + compiler/Language/Haskell/Syntax/Doc.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Expr.hs-boot
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- compiler/Language/Haskell/Syntax/Lit.hs
- compiler/Language/Haskell/Syntax/Module/Name.hs
- compiler/Language/Haskell/Syntax/Pat.hs
- + compiler/Language/Haskell/Syntax/Text.hs
- compiler/Language/Haskell/Syntax/Type.hs
- − compiler/Language/Haskell/Syntax/Type.hs-boot
- compiler/ghc.cabal.in
- configure.ac
- distrib/configure.ac.in
- − docs/users_guide/10.0.1-notes.rst
- + docs/users_guide/10.2.1-notes.rst
- − docs/users_guide/9.16.1-notes.rst
- docs/users_guide/bugs.rst
- docs/users_guide/conf.py
- docs/users_guide/debug-info.rst
- docs/users_guide/debugging.rst
- docs/users_guide/extending_ghc.rst
- docs/users_guide/exts/control.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/linear_types.rst
- + docs/users_guide/exts/modifiers.rst
- docs/users_guide/exts/qualified_strings.rst
- docs/users_guide/exts/recursive_do.rst
- docs/users_guide/exts/required_type_arguments.rst
- docs/users_guide/exts/stolen_syntax.rst
- docs/users_guide/exts/syntax.rst
- docs/users_guide/exts/template_haskell.rst
- docs/users_guide/ghc_config.py.in
- − docs/users_guide/ghc_packages.py
- docs/users_guide/ghci.rst
- docs/users_guide/javascript.rst
- docs/users_guide/packages.rst
- docs/users_guide/phases.rst
- docs/users_guide/profiling.rst
- docs/users_guide/release-notes.rst
- docs/users_guide/runtime_control.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/using-warnings.rst
- docs/users_guide/using.rst
- docs/users_guide/utils.py
- ghc/GHC/Driver/Session/Mode.hs
- ghc/GHCi/Leak.hs
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Exception.hs
- ghc/GHCi/UI/Info.hs
- ghc/Main.hs
- ghc/ghc-bin.cabal.in
- hadrian/README.md
- hadrian/bindist/Makefile
- hadrian/bindist/config.mk.in
- hadrian/bootstrap/generate_bootstrap_plans
- hadrian/bootstrap/plan-9_10_1.json
- hadrian/bootstrap/plan-9_10_2.json
- hadrian/bootstrap/plan-9_10_3.json
- hadrian/bootstrap/plan-9_12_1.json
- hadrian/bootstrap/plan-9_12_2.json
- + hadrian/bootstrap/plan-9_14_1.json
- hadrian/bootstrap/plan-bootstrap-9_10_1.json
- hadrian/bootstrap/plan-bootstrap-9_10_2.json
- hadrian/bootstrap/plan-bootstrap-9_10_3.json
- hadrian/bootstrap/plan-bootstrap-9_12_1.json
- hadrian/bootstrap/plan-bootstrap-9_12_2.json
- + hadrian/bootstrap/plan-bootstrap-9_14_1.json
- hadrian/build-cabal
- hadrian/build-cabal.bat
- hadrian/cabal.project
- hadrian/cfg/default.host.target.in
- hadrian/cfg/default.target.in
- + hadrian/cfg/system.config.host.in
- hadrian/cfg/system.config.in
- + hadrian/cfg/system.config.target.in
- hadrian/doc/flavours.md
- hadrian/doc/make.md
- hadrian/doc/testsuite.md
- hadrian/doc/user-settings.md
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- + hadrian/src/BindistConfig.hs
- hadrian/src/Builder.hs
- hadrian/src/CommandLine.hs
- hadrian/src/Context.hs
- hadrian/src/Expression.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/Builder.hs
- hadrian/src/Hadrian/Builder/Ar.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Hadrian/Haskell/Hash.hs
- hadrian/src/Hadrian/Oracles/Path.hs
- hadrian/src/Hadrian/Oracles/TextFile.hs
- hadrian/src/Hadrian/Utilities.hs
- hadrian/src/Main.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Flavour.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/CabalReinstall.hs
- + hadrian/src/Rules/Changelog.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Documentation.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Program.hs
- hadrian/src/Rules/Register.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Common.hs
- hadrian/src/Settings/Builders/Configure.hs
- hadrian/src/Settings/Builders/DeriveConstants.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Builders/SplitSections.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Development.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Performance.hs
- hadrian/src/Settings/Flavours/Quick.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Quickest.hs
- hadrian/src/Settings/Flavours/Validate.hs
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[Git][ghc/ghc][wip/T27212] 22 commits: hadrian: binary-dist-dir should not be the default target
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T27212 at Glasgow Haskell Compiler / GHC
Commits:
2ecabb4f by Zubin Duggal at 2026-07-09T09:23:25-04:00
hadrian: binary-dist-dir should not be the default target
Revert behaviour to pre 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2
In 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2, we applied the following behaviour change:
```
hadrian: Build stage 2 cross compilers
...
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
```
This is a major regression to development experience, a plain hadrian/build
--freeze1 now takes ages because we rebuild all docs (which need to go in the
binary dist dir).
`binary-dist-dir` is the wrong default target for regular GHC development work
Fixes #27445
- - - - -
e16388e3 by Zubin Duggal at 2026-07-09T09:23:25-04:00
.gitignore: Add the hadrian system.config introduced by commit 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2
Since
commit 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2
Author: Matthew Pickering <matthewtpickering(a)gmail.com>
Date: Thu Dec 21 16:17:41 2023 +0000
hadrian: Build stage 2 cross compilers
./configure produces /hadrian/cfg/system.config.{host,target}
Add these to .gitignore
- - - - -
7e8abf41 by Alan Zimmerman at 2026-07-09T09:24:12-04:00
EPA: Replace AnnListItem with simply [TrailingAnn]
Remove the unnecessary wrapper around a single field.
- - - - -
29032f17 by Zubin Duggal at 2026-07-09T09:24:58-04:00
testsuite: Keep real reason for fragile test failures
- - - - -
c34e03a7 by Zubin Duggal at 2026-07-09T09:24:58-04:00
testsuite: Fall back to the failure reason for empty JUnit bodies
- - - - -
409d40f0 by Zubin Duggal at 2026-07-09T09:24:58-04:00
testsuite: Show output diffs in JUnit output
Also refactor compare_outputs to return essentially a `Maybe Diff`
(`CompareOutput`) instead of a bool, but more pythonic. This
allows us to pass the diff through nice.
- - - - -
06fee1ab by Zubin Duggal at 2026-07-09T09:24:58-04:00
perf notes: include stat deviation and acceptance window in notes so they show up in gitlab
- - - - -
57c0f32c by mangoiv at 2026-07-10T11:08:38-04:00
driver: enable -finter-module-far-jumps by default
this fixes a compatibility bug with certain binutils/gcc versions where
we were seeing jump offset overflow errors.
This commit can probably reverted if we stop supporting the problematic
binutils/gcc verions (2.44 and 14.2, respectively)
Reolves #26994
- - - - -
4396a6f2 by Andrea Vezzosi at 2026-07-10T11:09:25-04:00
[Fix #27287] preserve ModBreaks in ModIface
- - - - -
ed261a7e by Cheng Shao at 2026-07-14T17:59:38-04:00
hadrian: fix HLS support
This patch fixes hadrian's HLS support so one can rely on HLS when
working on the hadrian codebase. Fixes #27480.
Not building/linking shared libraries for hadrian is a severely
premature optimization; this top-level setting in `cabal.project` only
affects home packages while the dependencies in the cabal store are
built with vanilla/dynamic anyway, and even adding dynamic builds to
home packages would not be costly due to cabal's usage of
`-dynamic-too`.
- - - - -
eee8ec5b by Cheng Shao at 2026-07-14T18:00:20-04:00
compiler: fix miscompiled %load_relaxed, add missing %store_relaxed
This patch fixes the %load_relaxed cmm primop compilation logic to
correctly use relaxed memory ordering, and adds the missing
%store_relaxed primop. Parsing logic of %load/%store with explicit
ordering is covered in the AtomicFetch test case. Fixes #27483.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
1718230f by Alan Zimmerman at 2026-07-14T18:01:06-04:00
EPA: Keep binds and sigs together in HsValBindsLR
We combine them into a single list for GhcPs, wrapped in the
ValBind data type, which is the bind equivalent of ValD, having
constructors for binds and sigs.
This simplifies exact print processing, especially when using it to
update the contents of local binds, as we no longer need AnnSortKey
BindTag
- - - - -
6bd1ad2a by Andreas Klebinger at 2026-07-14T18:01:49-04:00
Bump nofib submodule to account for MonoLocalBinds.
New versions of GHC enable MonoLocalBinds by default.
This breaks some of the benchmarks. I've fixed this and
this bump pulls in that fix.
- - - - -
7eb0f1c9 by Cheng Shao at 2026-07-14T18:02:31-04:00
testsuite: fix bytecodeIPE test under +ipe flavours
This patch fixes the bytecodeIPE test under +ipe flavours. It used to
fail under +ipe because the RTS is built with IPE info, then
stg_AP_info in RTS carries IPE info, so whereFrom wouldn't return
Nothing. Now the test checks IPE info of a datacon in the ghci-loaded
module which is not affected by whether the RTS is built with IPE info
or not. Fixes #27498.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
ef038aae by cydparser at 2026-07-15T04:35:41-04:00
Reduce bytes allocated for `capabilities` in RTS (fixes #27487)
In rts/Capability.c, `capabilities` is an array of pointers, but it was allocated as if it were an
array of Capability's.
- - - - -
d377e83e by Cheng Shao at 2026-07-15T04:36:27-04:00
rts: fix missing UNTAG in stg_readTVarIOzh
This patch fixes missing UNTAG on the current value closure read from
StgTVar. UNTAG is a no-op when it's stg_TREC_HEADER_info which is word
aligned; it may be a tagged closure, and reading info table from the
tagged address is an unaligned load which may cause issues on
platforms with strict alignment requirements.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
8ed03842 by Cheng Shao at 2026-07-15T04:36:27-04:00
rts: fix missing UNTAG in stg_control0zh_ll
This patch fixes missing UNTAG on the cont closure returned by
captureContinuationAndAbort. In case it's not NULL,
captureContinuationAndAbort returns a tagged StgContinuation closure,
in which case it must be untagged before accessing the
apply_mask_frame field.
In the past it worked out of luck: when apply_mask_frame was NULL then
mask_frame_offset is also 0 so the control flow didn't diverge to a
wrong path. Still, this is horribly wrong and will crash once
StgContinuation struct is refactored and fields are shuffled around.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
5aa7000a by Cheng Shao at 2026-07-15T04:37:08-04:00
compiler: fix redundant AP thunk codegen when not using -ticky-ap-thunk
This patch fixes a double negation confusion in !7525 that results in
some redundant AP thunk code generation when not using
-ticky-ap-thunk. Now, we use `stgToCmmUseStdApThunk` to indicate
whether precomputed AP thunks in the RTS should be used, which
defaults to `True`, unless `-ticky-ap-thunk` is passed.
`-finfo-table-map` now also implies `-ticky-ap-thunk`, since when
doing IPE profiling we want the generated AP thunks to be unique.
Fixes #27502.
-------------------------
Metric Decrease:
T3064
-------------------------
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
d43a7b7a by Brian McKenna at 2026-07-15T20:10:04+02:00
Strip ticks when desugaring bool guards
The special `considerAccessible` pattern was broken when compiling
with debug info. Compiling with debug info wraps expressions with
`SourceNote` ticks, which broke the internals of the
`desugarBoolGuard` function. Ticks are now ignored within this
function.
Fixes #27360
- - - - -
ede4b17b by Ben Gamari at 2026-07-15T22:59:53-04:00
base: Display ExceptionContext in WhileHandling's textual description
As originally-implemented the implementation for
`WhileHandling(displayExceptionAnnotation)` would display the
`ExceptionContext` of the exception which it carries (as this was the
behavior of `displayException`, in terms of which
`displayExceptionAnnotation` was implemented).
However, in 284ffab3 the definition of `SomeException(displayException)`
was changed to exclude the `ExceptionContext`. This means that
`WhileHandling(displayExceptionAnnotation)` fails to describe the
provenance of the exception which it captures, greatly limiting its
utility.
Return the implementation to its originally-specified behavior by
implementing `WhileHandling(displayExceptionAnnotation)` in terms of
`displayExceptionWithInfo`.
Fixes #27456.
- - - - -
f7df964a by Simon Peyton Jones at 2026-07-16T14:44:23+01:00
Use manifestArity in findRhsArity
Addresses #27212
- - - - -
1bcbab87 by Simon Peyton Jones at 2026-07-16T14:44:23+01:00
Wibble errors
- - - - -
117 changed files:
- .gitignore
- + changelog.d/T27360
- + changelog.d/T27456
- + changelog.d/fix-cmm-atomic-load-store
- + changelog.d/fix-use-std-ap-thunk
- + changelog.d/inter-module-far-jumps-aarch64-default
- compiler/GHC/ByteCode/Breakpoints.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main/Compile.hs
- compiler/GHC/Driver/Main/Hsc.hs
- compiler/GHC/Driver/Main/Passes.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- + compiler/GHC/HsToCore/Breakpoints/Types.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Platform/Ways.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/Config.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Unit/Module/ModGuts.hs
- compiler/GHC/Unit/Module/ModIface.hs
- compiler/GHC/Unit/Module/WholeCoreBindings.hs
- compiler/GHC/Utils/Binary.hs
- compiler/Language/Haskell/Syntax/Binds.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/ghc.cabal.in
- docs/users_guide/using-optimisation.rst
- ghc/GHCi/UI.hs
- hadrian/cabal.project
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- libraries/base/changelog.md
- libraries/base/tests/T15349.stderr
- libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs
- libraries/ghc-internal/tests/backtraces/T14532b.stdout
- nofib
- rts/Capability.c
- rts/ContinuationOps.cmm
- rts/PrimOps.cmm
- testsuite/driver/junit.py
- testsuite/driver/perf_notes.py
- testsuite/driver/testglobals.py
- testsuite/driver/testlib.py
- testsuite/driver/testutil.py
- testsuite/tests/arityanal/should_compile/Arity11.stderr
- testsuite/tests/cmm/should_run/AtomicFetch.hs
- testsuite/tests/cmm/should_run/AtomicFetch_cmm.cmm
- testsuite/tests/codeGen/should_run/cgrun025.stderr
- testsuite/tests/count-deps/CountDepsParser.stdout
- testsuite/tests/exceptions/T26759.stderr
- testsuite/tests/ghc-api/T25121_status.stdout
- testsuite/tests/ghc-api/exactprint/T22919.stderr
- testsuite/tests/ghc-api/exactprint/Test20239.stderr
- testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr
- testsuite/tests/ghc-e/should_fail/T18441fail7.stderr
- testsuite/tests/ghci/scripts/bytecodeIPE.hs
- testsuite/tests/ghci/should_run/Makefile
- + testsuite/tests/ghci/should_run/T27287.hs
- + testsuite/tests/ghci/should_run/T27287.stdout
- testsuite/tests/ghci/should_run/all.T
- testsuite/tests/haddock/should_compile_flag_haddock/T17544.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T24221.stderr
- testsuite/tests/mdo/should_fail/mdofail006.stderr
- testsuite/tests/module/mod185.stderr
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/DumpSemis.stderr
- testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/T14189.stderr
- testsuite/tests/parser/should_compile/T15323.stderr
- testsuite/tests/parser/should_compile/T20452.stderr
- testsuite/tests/parser/should_compile/T20718.stderr
- testsuite/tests/parser/should_compile/T20718b.stderr
- testsuite/tests/parser/should_compile/T20846.stderr
- testsuite/tests/parser/should_compile/T23315/T23315.stderr
- + testsuite/tests/pmcheck/should_compile/T27360.hs
- testsuite/tests/pmcheck/should_compile/all.T
- testsuite/tests/printer/AnnotationNoListTuplePuns.stdout
- testsuite/tests/printer/T18791.stderr
- testsuite/tests/printer/Test20297.stdout
- testsuite/tests/printer/Test24533.stdout
- testsuite/tests/runghc/T7859.stderr-mingw32
- testsuite/tests/simplCore/should_compile/DsSpecPragmas.stderr
- testsuite/tests/typecheck/should_compile/T15242.stderr
- testsuite/tests/typecheck/should_compile/all.T
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Utils.hs
The diff was not included because it is too large.
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[Git][ghc/ghc][wip/T22439] 1709 commits: Introduce CapIOManager as the per-cap I/O mangager state
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T22439 at Glasgow Haskell Compiler / GHC
Commits:
8d6aaa49 by Duncan Coutts at 2022-11-22T02:06:16-05:00
Introduce CapIOManager as the per-cap I/O mangager state
Rather than each I/O manager adding things into the Capability structure
ad-hoc, we should have a common CapIOManager iomgr member of the
Capability structure, with a common interface to initialise etc.
The content of the CapIOManager struct will be defined differently for
each I/O manager implementation. Eventually we should be able to have
the CapIOManager be opaque to the rest of the RTS, and known just to the
I/O manager implementation. We plan for that by making the Capability
contain a pointer to the CapIOManager rather than containing the
structure directly.
Initially just move the Unix threaded I/O manager's control FD.
- - - - -
8901285e by Duncan Coutts at 2022-11-22T02:06:17-05:00
Add hook markCapabilityIOManager
To allow I/O managers to have GC roots in the Capability, within the
CapIOManager structure.
Not yet used in this patch.
- - - - -
5cf709c5 by Duncan Coutts at 2022-11-22T02:06:17-05:00
Move APPEND_TO_BLOCKED_QUEUE from cmm to C
The I/O and delay blocking primitives for the non-threaded way
currently access the blocked_queue and sleeping_queue directly.
We want to move where those queues are to make their ownership clearer:
to have them clearly belong to the I/O manager impls rather than to the
scheduler. Ultimately we will want to change their representation too.
It's inconvenient to do that if these queues are accessed directly from
cmm code. So as a first step, replace the APPEND_TO_BLOCKED_QUEUE with a
C version appendToIOBlockedQueue(), and replace the open-coded
sleeping_queue insertion with insertIntoSleepingQueue().
- - - - -
ced9acdb by Duncan Coutts at 2022-11-22T02:06:17-05:00
Move {blocked,sleeping}_queue from scheduler global vars to CapIOManager
The blocked_queue_{hd,tl} and the sleeping_queue are currently
cooperatively managed between the scheduler and (some but not all of)
the non-threaded I/O manager implementations.
They lived as global vars with the scheduler, but are poked by I/O
primops and the I/O manager backends.
This patch is a step on the path towards making the management of I/O or
timer blocking belong to the I/O managers and not the scheduler.
Specifically, this patch moves the {blocked,sleeping}_queue from being
global vars in the scheduler to being members of the CapIOManager struct
within each Capability. They are not yet exclusively used by the I/O
managers: they are still poked from a couple other places, notably in
the scheduler before calling awaitEvent.
- - - - -
0f68919e by Duncan Coutts at 2022-11-22T02:06:17-05:00
Remove the now-unused markScheduler
The global vars {blocked,sleeping}_queue are now in the Capability and
so get marked there via markCapabilityIOManager.
- - - - -
39a91f60 by Duncan Coutts at 2022-11-22T02:06:17-05:00
Move macros for checking for pending IO or timers
from Schedule.h to Schedule.c and IOManager.h
This is just moving, the next step will be to rejig them slightly.
For the non-threaded RTS the scheduler needs to be able to test for
there being pending I/O operation or pending timers. The implementation
of these tests should really be considered to be part of the I/O
managers and not part of the scheduler.
- - - - -
664b034b by Duncan Coutts at 2022-11-22T02:06:17-05:00
Replace EMPTY_{BLOCKED,SLEEPING}_QUEUE macros by function
These are the macros originaly from Scheduler.h, previously moved to
IOManager.h, and now replaced with a single inline function
anyPendingTimeoutsOrIO(). We can use a single function since the two
macros were always checked together.
Note that since anyPendingTimeoutsOrIO is defined for all IO manager
cases, including threaded, we do not need to guard its use by cpp
#if !defined(THREADED_RTS)
- - - - -
32946220 by Duncan Coutts at 2022-11-22T02:06:17-05:00
Expand emptyThreadQueues inline for clarity
It was not really adding anything. The name no longer meant anything
since those I/O and timeout queues do not belong to the scheuler.
In one of the two places it was used, the comments already had to
explain what it did, whereas now the code matches the comment nicely.
- - - - -
9943baf9 by Duncan Coutts at 2022-11-22T02:06:17-05:00
Move the awaitEvent declaration into IOManager.h
And add or adjust comments at the use sites of awaitEvent.
- - - - -
054dcc9d by Duncan Coutts at 2022-11-22T02:06:17-05:00
Pass the Capability *cap explicitly to awaitEvent
It is currently only used in the non-threaded RTS so it works to use
MainCapability, but it's a bit nicer to pass the cap anyway. It's
certainly shorter.
- - - - -
667fe5a4 by Duncan Coutts at 2022-11-22T02:06:17-05:00
Pass the Capability *cap explicitly to appendToIOBlockedQueue
And to insertIntoSleepingQueue. Again, it's a bit cleaner and simpler
though not strictly necessary given that these primops are currently
only used in the non-threaded RTS.
- - - - -
7181b074 by Duncan Coutts at 2022-11-22T02:06:17-05:00
Reveiew feedback: improve one of the TODO comments
The one about the nonsense (const False) test on WinIO for there being any IO
or timers pending, leading to unnecessary complication later in the
scheduler.
- - - - -
e5b68183 by Andreas Klebinger at 2022-11-22T02:06:52-05:00
Optimize getLevity.
Avoid the intermediate data structures allocated by splitTyConApp.
This avoids ~0.5% of allocations for a build using -O2.
Fixes #22254
- - - - -
de5fb348 by Andreas Klebinger at 2022-11-22T02:07:28-05:00
hadrian:Set TNTC when running testsuite.
- - - - -
9d61c182 by Oleg Grenrus at 2022-11-22T15:59:34-05:00
Add unsafePtrEquality# restricted to UnliftedTypes
- - - - -
e817c871 by Jonathan Dowland at 2022-11-22T16:00:14-05:00
utils/unlit: adjust parser to match Report spec
The Haskell 2010 Report says that, for Latex-style Literate format,
"Program code begins on the first line following a line that begins
\begin{code}". (This is unchanged from the 98 Report)
However the unlit.c implementation only matches a line that contains
"\begin{code}" and nothing else. One consequence of this is that one
cannot suffix Latex options to the code environment. I.e., this does
not work:
\begin{code}[label=foo,caption=Foo Code]
Adjust the matcher to conform to the specification from the Report.
The Haskell Wiki currently recommends suffixing a '%' to \begin{code}
in order to deliberately hide a code block from Haskell. This is bad
advice, as it's relying on an implementation quirk rather than specified
behaviour. None-the-less, some people have tried to use it, c.f.
<https://mail.haskell.org/pipermail/haskell-cafe/2009-September/066780.html>
An alternative solution is to define a separate, equivalent Latex
environment to "code", that is functionally identical in Latex but
ignored by unlit. This should not be a burden: users are required to
manually define the code environment anyway, as it is not provided
by the Latex verbatim or lstlistings packages usually used for
presenting code in documents.
Fixes #3549.
- - - - -
0b7fef11 by Teo Camarasu at 2022-11-23T12:44:33-05:00
Fix eventlog all option
Previously it didn't enable/disable nonmoving_gc and ticky event types
Fixes #21813
- - - - -
04d0618c by Arnaud Spiwack at 2022-11-23T12:45:14-05:00
Expand Note [Linear types] with the stance on linting linearity
Per the discussion on #22123
- - - - -
e1538516 by Lawton Nichols at 2022-11-23T12:45:55-05:00
Add documentation on custom Prelude modules (#22228)
Specifically, custom Prelude modules that are named `Prelude`.
- - - - -
b5c71454 by Sylvain Henry at 2022-11-23T12:46:35-05:00
Don't let configure perform trivial substitutions (#21846)
Hadrian now performs substitutions, especially to generate .cabal files
from .cabal.in files. Two benefits:
1. We won't have to re-configure when we modify thing.cabal.in. Hadrian
will take care of this for us.
2. It paves the way to allow the same package to be configured
differently by Hadrian in the same session. This will be useful to
fix #19174: we want to build a stage2 cross-compiler for the host
platform and a stage1 compiler for the cross target platform in the
same Hadrian session.
- - - - -
99aca26b by nineonine at 2022-11-23T12:47:11-05:00
CApiFFI: add ConstPtr for encoding const-qualified pointer return types (#22043)
Previously, when using `capi` calling convention in foreign declarations,
code generator failed to handle const-cualified pointer return types.
This resulted in CC toolchain throwing `-Wincompatible-pointer-types-discards-qualifiers`
warning.
`Foreign.C.Types.ConstPtr` newtype was introduced to handle these cases -
special treatment was put in place to generate appropritetly qualified C
wrapper that no longer triggers the above mentioned warning.
Fixes #22043
- - - - -
040bfdc3 by M Farkas-Dyck at 2022-11-23T21:59:03-05:00
Scrub some no-warning pragmas.
- - - - -
178c1fd8 by Vladislav Zavialov at 2022-11-23T21:59:39-05:00
Check if the SDoc starts with a single quote (#22488)
This patch fixes pretty-printing of character literals
inside promoted lists and tuples.
When we pretty-print a promoted list or tuple whose first element
starts with a single quote, we want to add a space between the opening
bracket and the element:
'[True] -- ok
'[ 'True] -- ok
'['True] -- not ok
If we don't add the space, we accidentally produce a character
literal '['.
Before this patch, pprSpaceIfPromotedTyCon inspected the type as an AST
and tried to guess if it would be rendered with a single quote. However,
it missed the case when the inner type was itself a character literal:
'[ 'x'] -- ok
'['x'] -- not ok
Instead of adding this particular case, I opted for a more future-proof
solution: check the SDoc directly. This way we can detect if the single
quote is actually there instead of trying to predict it from the AST.
The new function is called spaceIfSingleQuote.
- - - - -
11627c42 by Matthew Pickering at 2022-11-23T22:00:15-05:00
notes: Fix references to HPT space leak note
Updating this note was missed when updating the HPT to the HUG.
Fixes #22477
- - - - -
86ff1523 by Andrei Borzenkov at 2022-11-24T17:24:51-05:00
Convert diagnostics in GHC.Rename.Expr to proper TcRnMessage (#20115)
Problem: avoid usage of TcRnMessageUnknown
Solution:
The following `TcRnMessage` messages has been introduced:
TcRnNoRebindableSyntaxRecordDot
TcRnNoFieldPunsRecordDot
TcRnIllegalStaticExpression
TcRnIllegalStaticFormInSplice
TcRnListComprehensionDuplicateBinding
TcRnEmptyStmtsGroup
TcRnLastStmtNotExpr
TcRnUnexpectedStatementInContext
TcRnIllegalTupleSection
TcRnIllegalImplicitParameterBindings
TcRnSectionWithoutParentheses
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
d198a19a by Cheng Shao at 2022-11-24T17:25:29-05:00
rts: fix missing Arena.h symbols in RtsSymbols.c
It was an unfortunate oversight in !8961 and broke devel2 builds.
- - - - -
5943e739 by Andrew Lelechenko at 2022-11-25T04:38:28-05:00
Assorted fixes to avoid Data.List.{head,tail}
- - - - -
1f1b99b8 by sheaf at 2022-11-25T04:38:28-05:00
Review suggestions for assorted fixes to avoid Data.List.{head,tail}
- - - - -
13d627bb by Vladislav Zavialov at 2022-11-25T04:39:04-05:00
Print unticked promoted data constructors (#20531)
Before this patch, GHC unconditionally printed ticks before promoted
data constructors:
ghci> type T = True -- unticked (user-written)
ghci> :kind! T
T :: Bool
= 'True -- ticked (compiler output)
After this patch, GHC prints ticks only when necessary:
ghci> type F = False -- unticked (user-written)
ghci> :kind! F
F :: Bool
= False -- unticked (compiler output)
ghci> data False -- introduce ambiguity
ghci> :kind! F
F :: Bool
= 'False -- ticked by necessity (compiler output)
The old behavior can be enabled by -fprint-redundant-promotion-ticks.
Summary of changes:
* Rename PrintUnqualified to NamePprCtx
* Add QueryPromotionTick to it
* Consult the GlobalRdrEnv to decide whether to print a tick (see mkPromTick)
* Introduce -fprint-redundant-promotion-ticks
Co-authored-by: Artyom Kuznetsov <hi(a)wzrd.ht>
- - - - -
d10dc6bd by Simon Peyton Jones at 2022-11-25T22:31:27+00:00
Fix decomposition of TyConApps
Ticket #22331 showed that we were being too eager to decompose
a Wanted TyConApp, leading to incompleteness in the solver.
To understand all this I ended up doing a substantial rewrite
of the old Note [Decomposing equalities], now reborn as
Note [Decomposing TyConApp equalities]. Plus rewrites of other
related Notes.
The actual fix is very minor and actually simplifies the code: in
`can_decompose` in `GHC.Tc.Solver.Canonical.canTyConApp`, we now call
`noMatchableIrreds`. A closely related refactor: we stop trying to
use the same "no matchable givens" function here as in
`matchClassInst`. Instead split into two much simpler functions.
- - - - -
2da5c38a by Will Hawkins at 2022-11-26T04:05:04-05:00
Redirect output of musttail attribute test
Compilation output from test for support of musttail attribute leaked to
the console.
- - - - -
0eb1c331 by Cheng Shao at 2022-11-28T08:55:53+00:00
Move hs_mulIntMayOflo cbits to ghc-prim
It's only used by wasm NCG at the moment, but ghc-prim is a more
reasonable place for hosting out-of-line primops. Also, we only need a
single version of hs_mulIntMayOflo.
- - - - -
36b53a9d by Cheng Shao at 2022-11-28T09:05:57+00:00
compiler: generate ccalls for clz/ctz/popcnt in wasm NCG
We used to generate a single wasm clz/ctz/popcnt opcode, but it's
wrong when it comes to subwords, so might as well generate ccalls for
them. See #22470 for details.
- - - - -
d4134e92 by Cheng Shao at 2022-11-28T23:48:14-05:00
compiler: remove unused MO_U_MulMayOflo
We actually only emit MO_S_MulMayOflo and never emit MO_U_MulMayOflo anywhere.
- - - - -
8d15eadc by Apoorv Ingle at 2022-11-29T03:09:31-05:00
Killing cc_fundeps, streamlining kind equality orientation, and type equality processing order
Fixes: #217093
Associated to #19415
This change
* Flips the orientation of the the generated kind equality coercion in canEqLHSHetero;
* Removes `cc_fundeps` in CDictCan as the check was incomplete;
* Changes `canDecomposableTyConAppOk` to ensure we process kind equalities before type equalities and avoiding a call to `canEqLHSHetero` while processing wanted TyConApp equalities
* Adds 2 new tests for validating the change
- testsuites/typecheck/should_compile/T21703.hs and
- testsuites/typecheck/should_fail/T19415b.hs (a simpler version of T19415.hs)
* Misc: Due to the change in the equality direction some error messages now have flipped type mismatch errors
* Changes in Notes:
- Note [Fundeps with instances, and equality orientation] supercedes Note [Fundeps with instances]
- Added Note [Kind Equality Orientation] to visualize the kind flipping
- Added Note [Decomposing Dependent TyCons and Processing Wanted Equalties]
- - - - -
646969d4 by Krzysztof Gogolewski at 2022-11-29T03:10:13-05:00
Change printing of sized literals to match the proposal
Literals in Core were printed as e.g. 0xFF#16 :: Int16#.
The proposal 451 now specifies syntax 0xFF#Int16.
This change affects the Core printer only - more to be done later.
Part of #21422.
- - - - -
02e282ec by Simon Peyton Jones at 2022-11-29T03:10:48-05:00
Be a bit more selective about floating bottoming expressions
This MR arranges to float a bottoming expression to the top
only if it escapes a value lambda.
See #22494 and Note [Floating to the top] in SetLevels.
This has a generally beneficial effect in nofib
+-------------------------------++----------+
| ||tsv (rel) |
+===============================++==========+
| imaginary/paraffins || -0.93% |
| imaginary/rfib || -0.05% |
| real/fem || -0.03% |
| real/fluid || -0.01% |
| real/fulsom || +0.05% |
| real/gamteb || -0.27% |
| real/gg || -0.10% |
| real/hidden || -0.01% |
| real/hpg || -0.03% |
| real/scs || -11.13% |
| shootout/k-nucleotide || -0.01% |
| shootout/n-body || -0.08% |
| shootout/reverse-complement || -0.00% |
| shootout/spectral-norm || -0.02% |
| spectral/fibheaps || -0.20% |
| spectral/hartel/fft || -1.04% |
| spectral/hartel/solid || +0.33% |
| spectral/hartel/wave4main || -0.35% |
| spectral/mate || +0.76% |
+===============================++==========+
| geom mean || -0.12% |
The effect on compile time is generally slightly beneficial
Metrics: compile_time/bytes allocated
----------------------------------------------
MultiLayerModulesTH_OneShot(normal) +0.3%
PmSeriesG(normal) -0.2%
PmSeriesT(normal) -0.1%
T10421(normal) -0.1%
T10421a(normal) -0.1%
T10858(normal) -0.1%
T11276(normal) -0.1%
T11303b(normal) -0.2%
T11545(normal) -0.1%
T11822(normal) -0.1%
T12150(optasm) -0.1%
T12234(optasm) -0.3%
T13035(normal) -0.2%
T16190(normal) -0.1%
T16875(normal) -0.4%
T17836b(normal) -0.2%
T17977(normal) -0.2%
T17977b(normal) -0.2%
T18140(normal) -0.1%
T18282(normal) -0.1%
T18304(normal) -0.2%
T18698a(normal) -0.1%
T18923(normal) -0.1%
T20049(normal) -0.1%
T21839r(normal) -0.1%
T5837(normal) -0.4%
T6048(optasm) +3.2% BAD
T9198(normal) -0.2%
T9630(normal) -0.1%
TcPlugin_RewritePerf(normal) -0.4%
hard_hole_fits(normal) -0.1%
geo. mean -0.0%
minimum -0.4%
maximum +3.2%
The T6048 outlier is hard to pin down, but it may be the effect of
reading in more interface files definitions. It's a small program for
which compile time is very short, so I'm not bothered about it.
Metric Increase:
T6048
- - - - -
ab23dc5e by Ben Gamari at 2022-11-29T03:11:25-05:00
testsuite: Mark unpack_sums_6 as fragile due to #22504
This test is explicitly dependent upon runtime, which is generally not
appropriate given that the testsuite is run in parallel and generally
saturates the CPU.
- - - - -
def47dd3 by Ben Gamari at 2022-11-29T03:11:25-05:00
testsuite: Don't use grep -q in unpack_sums_7
`grep -q` closes stdin as soon as it finds the pattern it is looking
for, resulting in #22484.
- - - - -
cc25d52e by Sylvain Henry at 2022-11-29T09:44:31+01:00
Add Javascript backend
Add JS backend adapted from the GHCJS project by Luite Stegeman.
Some features haven't been ported or implemented yet. Tests for these
features have been disabled with an associated gitlab ticket.
Bump array submodule
Work funded by IOG.
Co-authored-by: Jeffrey Young <jeffrey.young(a)iohk.io>
Co-authored-by: Luite Stegeman <stegeman(a)gmail.com>
Co-authored-by: Josh Meredith <joshmeredith2008(a)gmail.com>
- - - - -
68c966cd by sheaf at 2022-11-30T09:31:25-05:00
Fix @since annotations on WithDict and Coercible
Fixes #22453
- - - - -
a3a8e9e9 by Simon Peyton Jones at 2022-11-30T09:32:03-05:00
Be more careful in GHC.Tc.Solver.Interact.solveOneFromTheOther
We were failing to account for the cc_pend_sc flag in this
important function, with the result that we expanded superclasses
forever.
Fixes #22516.
- - - - -
a9d9b8c0 by Simon Peyton Jones at 2022-11-30T09:32:03-05:00
Use mkNakedFunTy in tcPatSynSig
As #22521 showed, in tcPatSynSig we make a "fake type" to
kind-generalise; and that type has unzonked type variables in it. So
we must not use `mkFunTy` (which checks FunTy's invariants) via
`mkPhiTy` when building this type. Instead we need to use
`mkNakedFunTy`.
Easy fix.
- - - - -
31462d98 by Andreas Klebinger at 2022-11-30T14:50:58-05:00
Properly cast values when writing/reading unboxed sums.
Unboxed sums might store a Int8# value as Int64#. This patch
makes sure we keep track of the actual value type.
See Note [Casting slot arguments] for the details.
- - - - -
10a2a7de by Oleg Grenrus at 2022-11-30T14:51:39-05:00
Move Void to GHC.Base...
This change would allow `Void` to be used deeper in module graph.
For example exported from `Prelude` (though that might be already
possible).
Also this change includes a change `stimes @Void _ x = x`,
https://github.com/haskell/core-libraries-committee/issues/95
While the above is not required, maintaining old stimes behavior
would be tricky as `GHC.Base` doesn't know about `Num` or `Integral`,
which would require more hs-boot files.
- - - - -
b4cfa8e2 by Sebastian Graf at 2022-11-30T14:52:24-05:00
DmdAnal: Reflect the `seq` of strict fields of a DataCon worker (#22475)
See the updated `Note [Data-con worker strictness]`
and the new `Note [Demand transformer for data constructors]`.
Fixes #22475.
- - - - -
d87f28d8 by Baldur Blöndal at 2022-11-30T21:16:36+01:00
Make Functor a quantified superclass of Bifunctor.
See https://github.com/haskell/core-libraries-committee/issues/91 for
discussion.
This change relates Bifunctor with Functor by requiring second = fmap.
Moreover this change is a step towards unblocking the major version bump
of bifunctors and profunctors to major version 6. This paves the way to
move the Profunctor class into base. For that Functor first similarly
becomes a superclass of Profunctor in the new major version 6.
- - - - -
72cf4c5d by doyougnu at 2022-12-01T12:36:44-05:00
FastString: SAT bucket_match
Metric Decrease:
MultiLayerModulesTH_OneShot
- - - - -
afc2540d by Simon Peyton Jones at 2022-12-01T12:37:20-05:00
Add a missing varToCoreExpr in etaBodyForJoinPoint
This subtle bug showed up when compiling a library with 9.4.
See #22491. The bug is present in master, but it is hard to
trigger; the new regression test T22491 fails in 9.4.
The fix was easy: just add a missing varToCoreExpr in
etaBodyForJoinPoint.
The fix is definitely right though!
I also did some other minor refatoring:
* Moved the preInlineUnconditionally test in simplExprF1 to
before the call to joinPointBinding_maybe, to avoid fruitless
eta-expansion.
* Added a boolean from_lam flag to simplNonRecE, to avoid two
fruitless tests, and commented it a bit better.
These refactorings seem to save 0.1% on compile-time allocation in
perf/compiler; with a max saving of 1.4% in T9961
Metric Decrease:
T9961
- - - - -
81eeec7f by M Farkas-Dyck at 2022-12-01T12:37:56-05:00
CI: Forbid the fully static build on Alpine to fail.
To do so, we mark some tests broken in this configuration.
- - - - -
c5d1bf29 by Bryan Richter at 2022-12-01T12:37:56-05:00
CI: Remove ARMv7 jobs
These jobs fail (and are allowed to fail) nearly every time.
Soon they won't even be able to run at all, as we won't currently have
runners that can run them.
Fixing the latter problem is tracked in #22409.
I went ahead and removed all settings and configurations.
- - - - -
d82992fd by Bryan Richter at 2022-12-01T12:37:56-05:00
CI: Fix CI lint
Failure was introduced by conflicting changes to gen_ci.hs that did
*not* trigger git conflicts.
- - - - -
ce126993 by Simon Peyton Jones at 2022-12-02T01:22:12-05:00
Refactor TyCon to have a top-level product
This patch changes the representation of TyCon so that it has
a top-level product type, with a field that gives the details
(newtype, type family etc), #22458.
Not much change in allocation, but execution seems to be a bit
faster.
Includes a change to the haddock submodule to adjust for API changes.
- - - - -
74c767df by Matthew Pickering at 2022-12-02T01:22:48-05:00
ApplicativeDo: Set pattern location before running exhaustiveness checker
This improves the error messages of the exhaustiveness checker when
checking statements which have been moved around with ApplicativeDo.
Before:
Test.hs:2:3: warning: [GHC-62161] [-Wincomplete-uni-patterns]
Pattern match(es) are non-exhaustive
In a pattern binding:
Patterns of type ‘Maybe ()’ not matched: Nothing
|
2 | let x = ()
| ^^^^^^^^^^
After:
Test.hs:4:3: warning: [GHC-62161] [-Wincomplete-uni-patterns]
Pattern match(es) are non-exhaustive
In a pattern binding:
Patterns of type ‘Maybe ()’ not matched: Nothing
|
4 | ~(Just res1) <- seq x (pure $ Nothing @())
|
Fixes #22483
- - - - -
85ecc1a0 by Matthew Pickering at 2022-12-02T19:46:43-05:00
Add special case for :Main module in `GHC.IfaceToCore.mk_top_id`
See Note [Root-main Id]
The `:Main` special binding is actually defined in the current module
(hence don't go looking for it externally) but the module name is rOOT_MAIN
rather than the current module so we need this special case.
There was already some similar logic in `GHC.Rename.Env` for
External Core, but now the "External Core" is in interface files it
needs to be moved here instead.
Fixes #22405
- - - - -
108c319f by Krzysztof Gogolewski at 2022-12-02T19:47:18-05:00
Fix linearity checking in Lint
Lint was not able to see that x*y <= x*y, because this inequality
was decomposed to x <= x*y && y <= x*y, but there was no rule
to see that x <= x*y.
Fixes #22546.
- - - - -
bb674262 by Bryan Richter at 2022-12-03T04:38:46-05:00
Mark T16916 fragile
See https://gitlab.haskell.org/ghc/ghc/-/issues/16966
- - - - -
5d267d46 by Vladislav Zavialov at 2022-12-03T04:39:22-05:00
Refactor: FreshOrReuse instead of addTyClTyVarBinds
This is a refactoring that should have no effect on observable behavior.
Prior to this change, GHC.HsToCore.Quote contained a few closely related
functions to process type variable bindings: addSimpleTyVarBinds,
addHsTyVarBinds, addQTyVarBinds, and addTyClTyVarBinds.
We can classify them by their input type and name generation strategy:
Fresh names only Reuse bound names
+---------------------+-------------------+
[Name] | addSimpleTyVarBinds | |
[LHsTyVarBndr flag GhcRn] | addHsTyVarBinds | |
LHsQTyVars GhcRn | addQTyVarBinds | addTyClTyVarBinds |
+---------------------+-------------------+
Note how two functions are missing. Because of this omission, there were
two places where a LHsQTyVars value was constructed just to be able to pass it
to addTyClTyVarBinds:
1. mk_qtvs in addHsOuterFamEqnTyVarBinds -- bad
2. mkHsQTvs in repFamilyDecl -- bad
This prevented me from making other changes to LHsQTyVars, so the main
goal of this refactoring is to get rid of those workarounds.
The most direct solution would be to define the missing functions.
But that would lead to a certain amount of code duplication. To avoid
code duplication, I factored out the name generation strategy into a
function parameter:
data FreshOrReuse
= FreshNamesOnly
| ReuseBoundNames
addSimpleTyVarBinds :: FreshOrReuse -> ...
addHsTyVarBinds :: FreshOrReuse -> ...
addQTyVarBinds :: FreshOrReuse -> ...
- - - - -
c189b831 by Vladislav Zavialov at 2022-12-03T04:39:22-05:00
addHsOuterFamEqnTyVarBinds: use FreshNamesOnly for explicit binders
Consider this example:
[d| instance forall a. C [a] where
type forall b. G [a] b = Proxy b |]
When we process "forall b." in the associated type instance, it is
unambiguously the binding site for "b" and we want a fresh name for it.
Therefore, FreshNamesOnly is more fitting than ReuseBoundNames.
This should not have any observable effect but it avoids pointless
lookups in the MetaEnv.
- - - - -
42512264 by Ross Paterson at 2022-12-03T10:32:45+00:00
Handle type data declarations in Template Haskell quotations and splices (fixes #22500)
This adds a TypeDataD constructor to the Template Haskell Dec type,
and ensures that the constructors it contains go in the TyCls namespace.
- - - - -
1a767fa3 by Vladislav Zavialov at 2022-12-05T05:18:50-05:00
Add BufSpan to EpaLocation (#22319, #22558)
The key part of this patch is the change to mkTokenLocation:
- mkTokenLocation (RealSrcSpan r _) = TokenLoc (EpaSpan r)
+ mkTokenLocation (RealSrcSpan r mb) = TokenLoc (EpaSpan r mb)
mkTokenLocation used to discard the BufSpan, but now it is saved and can
be retrieved from LHsToken or LHsUniToken.
This is made possible by the following change to EpaLocation:
- data EpaLocation = EpaSpan !RealSrcSpan
+ data EpaLocation = EpaSpan !RealSrcSpan !(Strict.Maybe BufSpan)
| ...
The end goal is to make use of the BufSpan in Parser/PostProcess/Haddock.
- - - - -
cd31acad by sheaf at 2022-12-06T15:45:58-05:00
Hadrian: fix ghcDebugAssertions off-by-one error
Commit 6b2f7ffe changed the logic that decided whether to enable debug
assertions. However, it had an off-by-one error, as the stage parameter
to the function inconsistently referred to the stage of the compiler
being used to build or the stage of the compiler we are building.
This patch makes it consistent. Now the parameter always refers to the
the compiler which is being built.
In particular, this patch re-enables
assertions in the stage 2 compiler when building with devel2 flavour,
and disables assertions in the stage 2 compiler when building with
validate flavour.
Some extra performance tests are now run in the "validate" jobs because
the stage2 compiler no longer contains assertions.
-------------------------
Metric Decrease:
CoOpt_Singletons
MultiComponentModules
MultiComponentModulesRecomp
MultiLayerModulesTH_OneShot
T11374
T12227
T12234
T13253-spj
T13701
T14683
T14697
T15703
T17096
T17516
T18304
T18478
T18923
T5030
T9872b
TcPlugin_RewritePerf
Metric Increase:
MultiComponentModules
MultiComponentModulesRecomp
MultiLayerModules
MultiLayerModulesRecomp
MultiLayerModulesTH_Make
T13386
T13719
T3294
T9233
T9675
parsing001
-------------------------
- - - - -
21d66db1 by mrkun at 2022-12-06T15:46:38-05:00
Push DynFlags out of runInstallNameTool
- - - - -
aaaaa79b by mrkun at 2022-12-06T15:46:38-05:00
Push DynFlags out of askOtool
- - - - -
4e28f49e by mrkun at 2022-12-06T15:46:38-05:00
Push DynFlags out of runInjectRPaths
- - - - -
a7422580 by mrkun at 2022-12-06T15:46:38-05:00
Push DynFlags out of Linker.MacOS
- - - - -
e902d771 by Matthew Craven at 2022-12-08T08:30:23-05:00
Fix bounds-checking buglet in Data.Array.Byte
...another manifestation of #20851 which
I unfortunately missed in my first pass.
- - - - -
8d36c0c6 by Gergő Érdi at 2022-12-08T08:31:03-05:00
Remove copy-pasted definitions of `graphFromEdgedVertices*`
- - - - -
c5d8ed3a by Gergő Érdi at 2022-12-08T08:31:03-05:00
Add version of `reachableGraph` that avoids loop for cyclic inputs
by building its result connected component by component
Fixes #22512
- - - - -
90cd5396 by Krzysztof Gogolewski at 2022-12-08T08:31:39-05:00
Mark Type.Reflection.Unsafe as Unsafe
This module can be used to construct ill-formed TypeReps, so it should
be Unsafe.
- - - - -
2057c77d by Ian-Woo Kim at 2022-12-08T08:32:19-05:00
Truncate eventlog event for large payload (#20221)
RTS eventlog events for postCapsetVecEvent are truncated if payload
is larger than EVENT_PAYLOAD_SIZE_MAX
Previously, postCapsetVecEvent records eventlog event with payload
of variable size larger than EVENT_PAYLOAD_SIZE_MAX (2^16) without
any validation, resulting in corrupted data.
For example, this happens when a Haskell binary is invoked with very
long command line arguments exceeding 2^16 bytes (see #20221).
Now we check the size of accumulated payload messages incrementally,
and truncate the message just before the payload size exceeds
EVENT_PAYLOAD_SIZE_MAX. RTS will warn the user with a message showing
how many arguments are truncated.
- - - - -
9ec76f61 by Cheng Shao at 2022-12-08T08:32:59-05:00
hadrian: don't add debug info to non-debug ways of rts
Hadrian used to pass -g when building all ways of rts. It makes output
binaries larger (especially so for wasm backend), and isn't needed by
most users out there, so this patch removes that flag. In case the
debug info is desired, we still pass -g3 when building the debug way,
and there's also the debug_info flavour transformer which ensures -g3
is passed for all rts ways.
- - - - -
7658cdd4 by Krzysztof Gogolewski at 2022-12-08T08:33:36-05:00
Restore show (typeRep @[]) == "[]"
The Show instance for TypeRep [] has changed in 9.5 to output "List"
because the name of the type constructor changed.
This seems to be accidental and is inconsistent with TypeReps of saturated
lists, which are printed as e.g. "[Int]".
For now, I'm restoring the old behavior; in the future,
maybe we should show TypeReps without puns (List, Tuple, Type).
- - - - -
216deefd by Matthew Pickering at 2022-12-08T22:45:27-05:00
Add test for #22162
- - - - -
5d0a311f by Matthew Pickering at 2022-12-08T22:45:27-05:00
ci: Add job to test interface file determinism guarantees
In this job we can run on every commit we add a test which builds the
Cabal library twice and checks that the ABI hash and interface hash is
stable across the two builds.
* We run the test 20 times to try to weed out any race conditions due to
`-j`
* We run the builds in different temporary directories to try to weed
out anything related to build directory affecting ABI or interface
file hash.
Fixes #22180
- - - - -
0a76d7d4 by Matthew Pickering at 2022-12-08T22:45:27-05:00
ci: Add job for testing interface stability across builds
The idea is that both the bindists should product libraries with the
same ABI and interface hash.
So the job checks with ghc-pkg to make sure the computed ABI
is the same.
In future this job can be extended to check for the other facets of
interface determinism.
Fixes #22180
- - - - -
74c9bf91 by Matthew Pickering at 2022-12-08T22:45:27-05:00
backpack: Be more careful when adding together ImportAvails
There was some code in the signature merging logic which added together
the ImportAvails of the signature and the signature which was merged
into it. This had the side-effect of making the merged signature depend
on the signature (via a normal module dependency). The intention was to
propagate orphan instances through the merge but this also messed up
recompilation logic because we shouldn't be attempting to load B.hi when
mergeing it.
The fix is to just combine the part of ImportAvails that we intended to
(transitive info, orphan instances and type family instances) rather
than the whole thing.
- - - - -
d122e022 by Matthew Pickering at 2022-12-08T22:45:27-05:00
Fix mk_mod_usage_info if the interface file is not already loaded
In #22217 it was observed that the order modules are compiled in affects
the contents of an interface file. This was because a module dependended
on another module indirectly, via a re-export but the interface file for
this module was never loaded because the symbol was never used in the
file.
If we decide that we depend on a module then we jolly well ought to
record this fact in the interface file! Otherwise it could lead to very
subtle recompilation bugs if the dependency is not tracked and the
module is updated.
Therefore the best thing to do is just to make sure the file is loaded
by calling the `loadSysInterface` function. This first checks the
caches (like we did before) but then actually goes to find the interface
on disk if it wasn't loaded.
Fixes #22217
- - - - -
ea25088d by lrzlin at 2022-12-08T22:46:06-05:00
Add initial support for LoongArch Architecture.
- - - - -
9eb9d2f4 by Andrew Lelechenko at 2022-12-08T22:46:47-05:00
Update submodule mtl to 2.3.1, parsec to 3.1.15.1, haddock and Cabal to HEAD
- - - - -
08d8fe2a by Andrew Lelechenko at 2022-12-08T22:46:47-05:00
Allow mtl-2.3 in hadrian
- - - - -
3807a46c by Andrew Lelechenko at 2022-12-08T22:46:47-05:00
Support mtl-2.3 in check-exact
- - - - -
ef702a18 by Andrew Lelechenko at 2022-12-08T22:46:47-05:00
Fix tests
- - - - -
3144e8ff by Sebastian Graf at 2022-12-08T22:47:22-05:00
Make (^) INLINE (#22324)
So that we get to cancel away the allocation for the lazily used base.
We can move `powImpl` (which *is* strict in the base) to the top-level
so that we don't duplicate too much code and move the SPECIALISATION
pragmas onto `powImpl`.
The net effect of this change is that `(^)` plays along much better with
inlining thresholds and loopification (#22227), for example in `x2n1`.
Fixes #22324.
- - - - -
1d3a8b8e by Matthew Pickering at 2022-12-08T22:47:59-05:00
Typeable: Fix module locations of some definitions in GHC.Types
There was some confusion in Data.Typeable about which module certain
wired-in things were defined in. Just because something is wired-in
doesn't mean it comes from GHC.Prim, in particular things like LiftedRep
and RuntimeRep are defined in GHC.Types and that's the end of the story.
Things like Int#, Float# etc are defined in GHC.Prim as they have no
Haskell definition site at all so we need to generate type
representations for them (which live in GHC.Types).
Fixes #22510
- - - - -
0f7588b5 by Sebastian Graf at 2022-12-08T22:48:34-05:00
Make `drop` and `dropWhile` fuse (#18964)
I copied the fusion framework we have in place for `take`.
T18964 asserts that we regress neither when fusion fires nor when it doesn't.
Fixes #18964.
- - - - -
26e71562 by Sebastian Graf at 2022-12-08T22:49:10-05:00
Do not strictify a DFun's parameter dictionaries (#22549)
... thus fixing #22549.
The details are in the refurbished and no longer dead
`Note [Do not strictify a DFun's parameter dictionaries]`.
There's a regression test in T22549.
- - - - -
36093407 by John Ericson at 2022-12-08T22:49:45-05:00
Delete `rts/package.conf.in`
It is a relic of the Make build system. The RTS now uses a
`package.conf` file generated the usual way by Cabal.
- - - - -
b0cc2fcf by Krzysztof Gogolewski at 2022-12-08T22:50:21-05:00
Fixes around primitive literals
* The SourceText of primitive characters 'a'# did not include
the #, unlike for other primitive literals 1#, 1##, 1.0#, 1.0##, "a"#.
We can now remove the function pp_st_suffix, which was a hack
to add the # back.
* Negative primitive literals shouldn't use parentheses, as described in
Note [Printing of literals in Core]. Added a testcase to T14681.
- - - - -
aacf616d by Bryan Richter at 2022-12-08T22:50:56-05:00
testsuite: Mark conc024 fragile on Windows
- - - - -
ed239a24 by Ryan Scott at 2022-12-09T09:42:16-05:00
Document TH splices' interaction with INCOHERENT instances
Top-level declaration splices can having surprising interactions with
`INCOHERENT` instances, as observed in #22492. This patch
resolves #22492 by documenting this strange interaction in the GHC User's
Guide.
[ci skip]
- - - - -
1023b432 by Mike Pilgrem at 2022-12-09T09:42:56-05:00
Fix #22300 Document GHC's extensions to valid whitespace
- - - - -
79b0cec0 by Luite Stegeman at 2022-12-09T09:43:38-05:00
Add support for environments that don't have setImmediate
- - - - -
5b007ec5 by Luite Stegeman at 2022-12-09T09:43:38-05:00
Fix bound thread status
- - - - -
65335d10 by Matthew Pickering at 2022-12-09T20:15:45-05:00
Update containers submodule
This contains a fix necessary for the multi-repl to work on GHC's code
base where we try to load containers and template-haskell into the same
session.
- - - - -
4937c0bb by Matthew Pickering at 2022-12-09T20:15:45-05:00
hadrian-multi: Put interface files in separate directories
Before we were putting all the interface files in the same directory
which was leading to collisions if the files were called the same thing.
- - - - -
8acb5b7b by Matthew Pickering at 2022-12-09T20:15:45-05:00
hadrian-toolargs: Add filepath to allowed repl targets
- - - - -
5949d927 by Matthew Pickering at 2022-12-09T20:15:45-05:00
driver: Set correct UnitId when rehydrating modules
We were not setting the UnitId before rehydrating modules which just led
to us attempting to find things in the wrong HPT. The test for this is
the hadrian-multi command (which is now added as a CI job).
Fixes #22222
- - - - -
ab06c0f0 by Matthew Pickering at 2022-12-09T20:15:45-05:00
ci: Add job to test hadrian-multi command
I am not sure this job is good because it requires booting HEAD with
HEAD, but it should be fine.
- - - - -
fac3e568 by Matthew Pickering at 2022-12-09T20:16:20-05:00
hadrian: Update bootstrap plans to 9.2.* series and 9.4.* series.
This updates the build plans for the most recent compiler versions, as
well as fixing the hadrian-bootstrap-gen script to a specific GHC
version.
- - - - -
195b08b4 by Matthew Pickering at 2022-12-09T20:16:20-05:00
ci: Bump boot images to use ghc-9.4.3
Also updates the bootstrap jobs to test booting 9.2 and 9.4.
- - - - -
c658c580 by Matthew Pickering at 2022-12-09T20:16:20-05:00
hlint: Removed redundant UnboxedSums pragmas
UnboxedSums is quite confusingly implied by UnboxedTuples, alas, just
the way it is.
See #22485
- - - - -
b3e98a92 by Oleg Grenrus at 2022-12-11T12:26:17-05:00
Add heqT, a kind-heterogeneous variant of heq
CLC proposal https://github.com/haskell/core-libraries-committee/issues/99
- - - - -
bfd7c1e6 by Andrew Lelechenko at 2022-12-11T12:26:55-05:00
Document that Bifunctor instances for tuples are lawful only up to laziness
- - - - -
5d1a1881 by Bryan Richter at 2022-12-12T16:22:36-05:00
Mark T21336a fragile
- - - - -
c30accc2 by Matthew Pickering at 2022-12-12T16:23:11-05:00
Add test for #21476
This issues seems to have been fixed since the ticket was made, so let's
add a test and move on.
Fixes #21476
- - - - -
e9d74a3e by Sebastian Graf at 2022-12-13T22:18:39-05:00
Respect -XStrict in the pattern-match checker (#21761)
We were missing a call to `decideBangHood` in the pattern-match checker.
There is another call in `matchWrapper.mk_eqn_info` which seems redundant
but really is not; see `Note [Desugaring -XStrict matches in Pmc]`.
Fixes #21761.
- - - - -
884790e2 by Gergő Érdi at 2022-12-13T22:19:14-05:00
Fix loop in the interface representation of some `Unfolding` fields
As discovered in #22272, dehydration of the unfolding info of a
recursive definition used to involve a traversal of the definition
itself, which in turn involves traversing the unfolding info. Hence,
a loop.
Instead, we now store enough data in the interface that we can produce
the unfolding info without this traversal. See Note [Tying the 'CoreUnfolding' knot]
for details.
Fixes #22272
Co-authored-by: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
- - - - -
9f301189 by Alan Zimmerman at 2022-12-13T22:19:50-05:00
EPA: When splitting out header comments, keep ones for first decl
Any comments immediately preceding the first declaration are no longer
kept as header comments, but attach to the first declaration instead.
- - - - -
8b1f1b45 by Sylvain Henry at 2022-12-13T22:20:28-05:00
JS: fix object file name comparison (#22578)
- - - - -
e9e161bb by Bryan Richter at 2022-12-13T22:21:03-05:00
configure: Bump min bootstrap GHC version to 9.2
- - - - -
75855643 by Ben Gamari at 2022-12-15T03:54:02-05:00
hadrian: Don't enable TSAN in stage0 build
- - - - -
da7b51d8 by Ben Gamari at 2022-12-15T03:54:02-05:00
cmm: Introduce blockConcat
- - - - -
34f6b09c by Ben Gamari at 2022-12-15T03:54:02-05:00
cmm: Introduce MemoryOrderings
- - - - -
43beaa7b by Ben Gamari at 2022-12-15T03:54:02-05:00
llvm: Respect memory specified orderings
- - - - -
8faf74fc by Ben Gamari at 2022-12-15T03:54:02-05:00
Codegen/x86: Eliminate barrier for relaxed accesses
- - - - -
6cc3944a by Ben Gamari at 2022-12-15T03:54:02-05:00
cmm/Parser: Reduce some repetition
- - - - -
6c9862c4 by Ben Gamari at 2022-12-15T03:54:02-05:00
cmm/Parser: Add syntax for ordered loads and stores
- - - - -
748490d2 by Ben Gamari at 2022-12-15T03:54:02-05:00
cmm/Parser: Atomic load syntax
Originally I had thought I would just use the `prim` call syntax instead
of introducing new syntax for atomic loads. However, it turns out that
`prim` call syntax tends to make things quite unreadable. This new
syntax seems quite natural.
- - - - -
28c6781a by Ben Gamari at 2022-12-15T03:54:02-05:00
codeGen: Introduce ThreadSanitizer instrumentation
This introduces a new Cmm pass which instruments the program with
ThreadSanitizer annotations, allowing full tracking of mutator memory
accesses via TSAN.
- - - - -
d97aa311 by Ben Gamari at 2022-12-15T03:54:02-05:00
Hadrian: Drop TSAN_ENABLED define from flavour
This is redundant since the TSANUtils.h already defines it.
- - - - -
86974ef1 by Ben Gamari at 2022-12-15T03:54:02-05:00
hadrian: Enable Cmm instrumentation in TSAN flavour
- - - - -
93723290 by Ben Gamari at 2022-12-15T03:54:02-05:00
rts: Ensure that global regs are never passed as fun call args
This is in general unsafe as they may be clobbered if they are mapped to
caller-saved machine registers. See Note [Register parameter passing].
- - - - -
2eb0fb87 by Matthew Pickering at 2022-12-15T03:54:39-05:00
Package Imports: Get candidate packages also from re-exported modules
Previously we were just looking at the direct imports to try and work
out what a package qualifier could apply to but #22333 pointed out we
also needed to look for reexported modules.
Fixes #22333
- - - - -
552b7908 by Ben Gamari at 2022-12-15T03:55:15-05:00
compiler: Ensure that MutVar operations have necessary barriers
Here we add acquire and release barriers in readMutVar# and
writeMutVar#, which are necessary for soundness.
Fixes #22468.
- - - - -
933d61a4 by Simon Peyton Jones at 2022-12-15T03:55:51-05:00
Fix bogus test in Lint
The Lint check for branch compatiblity within an axiom, in
GHC.Core.Lint.compatible_branches was subtly different to the
check made when contructing an axiom, in
GHC.Core.FamInstEnv.compatibleBranches.
The latter is correct, so I killed the former and am now using the
latter.
On the way I did some improvements to pretty-printing and documentation.
- - - - -
03ed0b95 by Ryan Scott at 2022-12-15T03:56:26-05:00
checkValidInst: Don't expand synonyms when splitting sigma types
Previously, the `checkValidInst` function (used when checking that an instance
declaration is headed by an actual type class, not a type synonym) was using
`tcSplitSigmaTy` to split apart the `forall`s and instance context. This is
incorrect, however, as `tcSplitSigmaTy` expands type synonyms, which can cause
instances headed by quantified constraint type synonyms to be accepted
erroneously.
This patch introduces `splitInstTyForValidity`, a variant of `tcSplitSigmaTy`
specialized for validity checking that does _not_ expand type synonyms, and
uses it in `checkValidInst`.
Fixes #22570.
- - - - -
ed056bc3 by Ben Gamari at 2022-12-16T16:12:44-05:00
rts/Messages: Refactor
This doesn't change behavior but makes the code a bit easier to follow.
- - - - -
7356f8e0 by Ben Gamari at 2022-12-16T16:12:44-05:00
rts/ThreadPaused: Ordering fixes
- - - - -
914f0025 by Ben Gamari at 2022-12-16T16:12:44-05:00
eventlog: Silence spurious data race
- - - - -
fbc84244 by Ben Gamari at 2022-12-16T16:12:44-05:00
Introduce SET_INFO_RELEASE for Cmm
- - - - -
821b5472 by Ben Gamari at 2022-12-16T16:12:44-05:00
rts: Use fences instead of explicit barriers
- - - - -
2228c999 by Ben Gamari at 2022-12-16T16:12:44-05:00
rts/stm: Fix memory ordering in readTVarIO#
See #22421.
- - - - -
99269b9f by Ben Gamari at 2022-12-16T16:12:44-05:00
Improve heap memory barrier Note
Also introduce MUT_FIELD marker in Closures.h to document mutable
fields.
- - - - -
70999283 by Ben Gamari at 2022-12-16T16:12:44-05:00
rts: Introduce getNumCapabilities
And ensure accesses to n_capabilities are atomic (although with relaxed
ordering). This is necessary as RTS API callers may concurrently call
into the RTS without holding a capability.
- - - - -
98689f77 by Ben Gamari at 2022-12-16T16:12:44-05:00
ghc: Fix data race in dump file handling
Previously the dump filename cache would use a non-atomic update which
could potentially result in lost dump contents. Note that this is still
a bit racy since the first writer may lag behind a later appending
writer.
- - - - -
605d9547 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Always use atomics for context_switch and interrupt
Since these are modified by the timer handler.
- - - - -
86f20258 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts/Timer: Always use atomic operations
As noted in #22447, the existence of the pthread-based ITimer
implementation means that we cannot assume that the program is
single-threaded.
- - - - -
f8e901dc by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Encapsulate recent_activity access
This makes it easier to ensure that it is accessed using the necessary
atomic operations.
- - - - -
e0affaa9 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Encapsulate access to capabilities array
- - - - -
7ca683e4 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Encapsulate sched_state
- - - - -
1cf13bd0 by Ben Gamari at 2022-12-16T16:12:45-05:00
PrimOps: Fix benign MutVar race
Relaxed ordering is fine here since the later CAS implies a release.
- - - - -
3d2a7e08 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Style fix
- - - - -
82c62074 by Ben Gamari at 2022-12-16T16:12:45-05:00
compiler: Use release store in eager blackholing
- - - - -
eb1a0136 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Fix ordering of makeStableName
- - - - -
ad0e260a by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Use ordered accesses instead of explicit barriers
- - - - -
a3eccf06 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Statically allocate capabilities
This is a rather simplistic way of solving #17289.
- - - - -
287fa3fb by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Ensure that all accesses to pending_sync are atomic
- - - - -
351eae58 by Ben Gamari at 2022-12-16T16:12:45-05:00
rts: Note race with wakeBlockingQueue
- - - - -
5acf33dd by Andrew Lelechenko at 2022-12-16T16:13:22-05:00
Bump submodule directory to 1.3.8.0 and hpc to HEAD
- - - - -
0dd95421 by Andrew Lelechenko at 2022-12-16T16:13:22-05:00
Accept allocations increase on Windows
This is because of `filepath-1.4.100.0` and AFPP, causing increasing round-trips
between lists and ByteArray. See #22625 for discussion.
Metric Increase:
MultiComponentModules
MultiComponentModulesRecomp
MultiLayerModules
MultiLayerModulesRecomp
T10421
T10547
T12150
T12227
T12234
T12425
T13035
T13253
T13253-spj
T13701
T13719
T15703
T16875
T18140
T18282
T18304
T18698a
T18698b
T18923
T20049
T21839c
T21839r
T5837
T6048
T9198
T9961
TcPlugin_RewritePerf
hard_hole_fits
- - - - -
ef9ac9d2 by Cheng Shao at 2022-12-16T16:13:59-05:00
testsuite: Mark T9405 as fragile instead of broken on Windows
It's starting to pass again, and the unexpected pass blocks CI.
- - - - -
1f3abd85 by Cheng Shao at 2022-12-16T21:16:28+00:00
compiler: remove obsolete commented code in wasm NCG
It was just a temporary hack to workaround a bug in the relooper, that
bug has been fixed long before the wasm backend is merged.
- - - - -
e3104eab by Cheng Shao at 2022-12-16T21:16:28+00:00
compiler: add missing export list of GHC.CmmToAsm.Wasm.FromCmm
Also removes some unreachable code here.
- - - - -
1c6930bf by Cheng Shao at 2022-12-16T21:16:28+00:00
compiler: change fallback function signature to Cmm function signature in wasm NCG
In the wasm NCG, when handling a `CLabel` of undefined function
without knowing its function signature, we used to fallback to `() ->
()` which is accepted by `wasm-ld`. This patch changes it to the
signature of Cmm functions, which equally works, but would be required
when we emit tail call instructions.
- - - - -
8a81d9d9 by Cheng Shao at 2022-12-16T21:16:28+00:00
compiler: add optional tail-call support in wasm NCG
When the `-mtail-call` clang flag is passed at configure time, wasm
tail-call extension is enabled, and the wasm NCG will emit
`return_call`/`return_call_indirect` instructions to take advantage of
it and avoid the `StgRun` trampoline overhead.
Closes #22461.
- - - - -
d1431cc0 by Cheng Shao at 2022-12-17T08:07:15-05:00
base: add missing autoconf checks for waitpid/umask
These are not present in wasi-libc. Required for fixing #22589
- - - - -
da3f1e91 by Cheng Shao at 2022-12-17T08:07:51-05:00
compiler: make .wasm the default executable extension on wasm32
Following convention as in other wasm toolchains. Fixes #22594.
- - - - -
ad21f4ef by Cheng Shao at 2022-12-17T08:07:51-05:00
ci: support hello.wasm in ci.sh cross testing logic
- - - - -
6fe2d778 by amesgen at 2022-12-18T19:33:49-05:00
Correct `exitWith` Haddocks
The `IOError`-specific `catch` in the Prelude is long gone.
- - - - -
b3eacd64 by Ben Gamari at 2022-12-18T19:34:24-05:00
rts: Drop racy assertion
0e274c39bf836d5bb846f5fa08649c75f85326ac added an assertion in
`dirty_MUT_VAR` checking that the MUT_VAR being dirtied was clean.
However, this isn't necessarily the case since another thread may have
raced us to dirty the object.
- - - - -
761c1f49 by Ben Gamari at 2022-12-18T19:35:00-05:00
rts/libdw: Silence uninitialized usage warnings
As noted in #22538, previously some GCC versions warned that various
locals in Libdw.c may be used uninitialized. Although this wasn't
strictly true (since they were initialized in an inline assembler block)
we fix this by providing explicit empty initializers.
Fixes #22538
- - - - -
5e047eff by Matthew Pickering at 2022-12-20T15:12:04+00:00
testsuite: Mark T16392 as fragile on windows
See #22649
- - - - -
703a4665 by M Farkas-Dyck at 2022-12-20T21:14:46-05:00
Scrub some partiality in `GHC.Cmm.Info.Build`: `doSRTs` takes a `[(CAFSet, CmmDecl)]` but truly wants a `[(CAFSet, CmmStatics)]`.
- - - - -
9736ab74 by Matthew Pickering at 2022-12-20T21:15:22-05:00
packaging: Fix upload_ghc_libs.py script
This change reflects the changes where .cabal files are now generated by
hadrian rather than ./configure.
Fixes #22518
- - - - -
7c6de18d by Ben Gamari at 2022-12-20T21:15:57-05:00
configure: Drop uses of AC_PROG_CC_C99
As noted in #22566, this macro is deprecated as of autoconf-2.70
`AC_PROG_CC` now sets `ac_cv_prog_cc_c99` itself.
Closes #22566.
- - - - -
36c5d98e by Ben Gamari at 2022-12-20T21:15:57-05:00
configure: Use AS_HELP_STRING instead of AC_HELP_STRING
The latter has been deprecated.
See #22566.
- - - - -
befe6ff8 by Andrew Lelechenko at 2022-12-20T21:16:37-05:00
GHCi.UI: fix various usages of head and tail
- - - - -
666d0ba7 by Andrew Lelechenko at 2022-12-20T21:16:37-05:00
GHCi.UI: avoid head and tail in parseCallEscape and around
- - - - -
5d96fd50 by Andrew Lelechenko at 2022-12-20T21:16:37-05:00
Make GHC.Driver.Main.hscTcRnLookupRdrName to return NonEmpty
- - - - -
3ce2ab94 by Andrew Lelechenko at 2022-12-21T06:17:56-05:00
Allow transformers-0.6 in ghc, ghci, ghc-bin and hadrian
- - - - -
954de93a by Andrew Lelechenko at 2022-12-21T06:17:56-05:00
Update submodule haskeline to HEAD (to allow transformers-0.6)
- - - - -
cefbeec3 by Andrew Lelechenko at 2022-12-21T06:17:56-05:00
Update submodule transformers to 0.6.0.4
- - - - -
b4730b62 by Andrew Lelechenko at 2022-12-21T06:17:56-05:00
Fix tests
T13253 imports MonadTrans, which acquired a quantified constraint in transformers-0.6, thus increase in allocations
Metric Increase:
T13253
- - - - -
0be75261 by Simon Peyton Jones at 2022-12-21T06:18:32-05:00
Abstract over the right free vars
Fix #22459, in two ways:
(1) Make the Specialiser not create a bogus specialisation if
it is presented by strangely polymorphic dictionary.
See Note [Weird special case in SpecDict] in
GHC.Core.Opt.Specialise
(2) Be more careful in abstractFloats
See Note [Which type variables to abstract over]
in GHC.Core.Opt.Simplify.Utils.
So (2) stops creating the excessively polymorphic dictionary in
abstractFloats, while (1) stops crashing if some other pass should
nevertheless create a weirdly polymorphic dictionary.
- - - - -
df7bc6b3 by Ying-Ruei Liang (TheKK) at 2022-12-21T14:31:54-05:00
rts: explicitly store return value of ccall checkClosure to prevent type error (#22617)
- - - - -
e193e537 by Simon Peyton Jones at 2022-12-21T14:32:30-05:00
Fix shadowing lacuna in OccurAnal
Issue #22623 demonstrated another lacuna in the implementation
of wrinkle (BS3) in Note [The binder-swap substitution] in
the occurrence analyser.
I was failing to add TyVar lambda binders using
addInScope/addOneInScope and that led to a totally bogus binder-swap
transformation.
Very easy to fix.
- - - - -
3d55d8ab by Simon Peyton Jones at 2022-12-21T14:32:30-05:00
Fix an assertion check in addToEqualCtList
The old assertion saw that a constraint ct could rewrite itself
(of course it can) and complained (stupid).
Fixes #22645
- - - - -
ceb2e9b9 by Ben Gamari at 2022-12-21T15:26:08-05:00
configure: Bump version to 9.6
- - - - -
fb4d36c4 by Ben Gamari at 2022-12-21T15:27:49-05:00
base: Bump version to 4.18
Requires various submodule bumps.
- - - - -
93ee7e90 by Ben Gamari at 2022-12-21T15:27:49-05:00
ghc-boot: Fix bootstrapping
- - - - -
fc3a2232 by Ben Gamari at 2022-12-22T13:45:06-05:00
Bump GHC version to 9.7
- - - - -
914f7fe3 by Andreas Klebinger at 2022-12-22T23:36:10-05:00
Don't consider large byte arrays/compact regions pinned.
Workaround for #22255 which showed how treating large/compact regions
as pinned could cause segfaults.
- - - - -
32b32d7f by Matthew Pickering at 2022-12-22T23:36:46-05:00
hadrian bindist: Install manpages to share/man/man1/ghc.1
When the installation makefile was copied over the manpages were no
longer installed in the correct place. Now we install it into share/man/man1/ghc.1
as the make build system did.
Fixes #22371
- - - - -
b3ddf803 by Ben Gamari at 2022-12-22T23:37:23-05:00
rts: Drop paths from configure from cabal file
A long time ago we would rely on substitutions from the configure script
to inject paths of the include and library directories of libffi and
libdw. However, now these are instead handled inside Hadrian when
calling Cabal's `configure` (see the uses of `cabalExtraDirs` in
Hadrian's `Settings.Packages.packageArgs`).
While the occurrences in the cabal file were redundant, they did no
harm. However, since b5c714545abc5f75a1ffdcc39b4bfdc7cd5e64b4 they have
no longer been interpolated. @mpickering noticed the suspicious
uninterpolated occurrence of `@FFIIncludeDir@` in #22595,
prompting this commit to finally remove them.
- - - - -
b2c7523d by Ben Gamari at 2022-12-22T23:37:59-05:00
Bump libffi-tarballs submodule
We will now use libffi-3.4.4.
- - - - -
3699a554 by Alan Zimmerman at 2022-12-22T23:38:35-05:00
EPA: Make EOF position part of AnnsModule
Closes #20951
Closes #19697
- - - - -
99757ce8 by Sylvain Henry at 2022-12-22T23:39:13-05:00
JS: fix support for -outputdir (#22641)
The `-outputdir` option wasn't correctly handled with the JS backend
because the same code path was used to handle both objects produced by
the JS backend and foreign .js files. Now we clearly distinguish the
two in the pipeline, fixing the bug.
- - - - -
02ed7d78 by Simon Peyton Jones at 2022-12-22T23:39:49-05:00
Refactor mkRuntimeError
This patch fixes #22634. Because we don't have TYPE/CONSTRAINT
polymorphism, we need two error functions rather than one.
I took the opportunity to rname runtimeError to impossibleError,
to line up with mkImpossibleExpr, and avoid confusion with the
genuine runtime-error-constructing functions.
- - - - -
35267f07 by Ben Gamari at 2022-12-22T23:40:32-05:00
base: Fix event manager shutdown race on non-Linux platforms
During shutdown it's possible that we will attempt to use a closed fd
to wakeup another capability's event manager. On the Linux eventfd path
we were careful to handle this. However on the non-Linux path we failed
to do so. Fix this.
- - - - -
317f45c1 by Simon Peyton Jones at 2022-12-22T23:41:07-05:00
Fix unifier bug: failing to decompose over-saturated type family
This simple patch fixes #22647
- - - - -
14b2e3d3 by Ben Gamari at 2022-12-22T23:41:42-05:00
rts/m32: Fix sanity checking
Previously we would attempt to clear pages which were marked as
read-only. Fix this.
- - - - -
16a1bcd1 by Matthew Pickering at 2022-12-23T09:15:24+00:00
ci: Move wasm pipelines into nightly rather than master
See #22664 for the changes which need to be made to bring one of these
back to the validate pipeline.
- - - - -
18d2acd2 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Fix race in marking of blackholes
We must use an acquire-fence when marking to ensure that the indirectee
is visible.
- - - - -
11241efa by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Fix segment list races
- - - - -
602455c9 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Use atomic when looking at bd->gen
Since it may have been mutated by a moving GC.
- - - - -
9d63b160 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Eliminate race in bump_static_flag
To ensure that we don't race with a mutator entering a new CAF we take
the SM mutex before touching static_flag. The other option here would be
to instead modify newCAF to use a CAS but the present approach is a bit
safer.
- - - - -
26837523 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Ensure that mutable fields have acquire barrier
- - - - -
8093264a by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Fix races in collector status tracking
Mark a number of accesses to do with tracking of the status of the
concurrent collection thread as atomic. No interesting races here,
merely necessary to satisfy TSAN.
- - - - -
387d4fcc by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Make segment state updates atomic
- - - - -
543cae00 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Refactor update remembered set initialization
This avoids a lock inversion between the storage manager mutex and
the stable pointer table mutex by not dropping the SM_MUTEX in
nonmovingCollect. This requires quite a bit of rejiggering but it
does seem like a better strategy.
- - - - -
c9936718 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Ensure that we aren't holding locks when closing them
TSAN complains about this sort of thing.
- - - - -
0cd31f7d by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Make bitmap accesses atomic
This is a benign race on any sensible hard since these are byte
accesses. Nevertheless, atomic accesses are necessary to satisfy
TSAN.
- - - - -
d3fe110a by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Fix benign race in update remembered set check
Relaxed load is fine here since we will take the lock before looking at
the list.
- - - - -
ab6cf893 by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Fix race in shortcutting
We must use an acquire load to read the info table pointer since if we
find an indirection we must be certain that we see the indirectee.
- - - - -
36c9f23c by Ben Gamari at 2022-12-23T19:09:30-05:00
nonmoving: Make free list counter accesses atomic
Since these may race with the allocator(s).
- - - - -
aebef31c by doyougnu at 2022-12-23T19:10:09-05:00
add GHC.Utils.Binary.foldGet' and use for Iface
A minor optimization to remove lazy IO and a lazy accumulator
strictify foldGet'
IFace.Binary: use strict foldGet'
remove superfluous bang
- - - - -
5eb357d9 by Ben Gamari at 2022-12-24T00:41:05-05:00
compiler: Ensure that GHC toolchain is first in search path
As noted in #22561, it is important that GHC's toolchain look
first for its own headers and libraries to ensure that the
system's are not found instead. If this happens things can
break in surprising ways (e.g. see #22561).
- - - - -
cbaebfb9 by Matthew Pickering at 2022-12-24T00:41:40-05:00
head.hackage: Use slow-validate bindist for linting jobs
This enables the SLOW_VALIDATE env var for the linting head.hackage
jobs, namely the jobs enabled manually, by the label or on the nightly
build now use the deb10-numa-slow-validate bindist which has assertions
enabled.
See #22623 for a ticket which was found by using this configuration
already!
The head.hackage jobs triggered by upstream CI are now thusly:
hackage-lint: Can be triggered on any MR, normal validate pipeline or nightly build.
Runs head.hackage with -dlint and a slow-validate bindist
hackage-label-lint: Trigged on MRs with "user-facing" label, runs the slow-validate
head.hackage build with -dlint.
nightly-hackage-lint: Runs automatically on nightly pipelines with slow-validate + dlint config.
nightly-hackage-perf: Runs automaticaly on nightly pipelines with release build and eventlogging enabled.
release-hackage-lint: Runs automatically on release pipelines with -dlint on a release bindist.
- - - - -
f4850f36 by Matthew Pickering at 2022-12-24T00:41:40-05:00
ci: Don't run abi-test-nightly on release jobs
The test is not configured to get the correct dependencies for the
release pipelines (and indeed stops the release pipeline being run at
all)
- - - - -
c264b06b by Matthew Pickering at 2022-12-24T00:41:40-05:00
ci: Run head.hackage jobs on upstream-testing branch rather than master
This change allows less priviledged users to trigger head.hackage jobs
because less permissions are needed to trigger jobs on the
upstream-testing branch, which is not protected.
There is a CI job which updates upstream-testing each hour to the state
of the master branch so it should always be relatively up-to-date.
- - - - -
63b97430 by Ben Gamari at 2022-12-24T00:42:16-05:00
llvmGen: Fix relaxed ordering
Previously I used LLVM's `unordered` ordering for the C11 `relaxed`
ordering. However, this is wrong and should rather use the LLVM
`monotonic` ordering.
Fixes #22640
- - - - -
f42ba88f by Ben Gamari at 2022-12-24T00:42:16-05:00
gitlab-ci: Introduce aarch64-linux-llvm job
This nightly job will ensure that we don't break the LLVM backend on
AArch64/Linux by bootstrapping GHC.
This would have caught #22640.
- - - - -
6d62f6bf by Matthew Pickering at 2022-12-24T00:42:51-05:00
Store RdrName rather than OccName in Holes
In #20472 it was pointed out that you couldn't defer out of scope but
the implementation collapsed a RdrName into an OccName to stuff it into
a Hole. This leads to the error message for a deferred qualified name
dropping the qualification which affects the quality of the error
message.
This commit adds a bit more structure to a hole, so a hole can replace a
RdrName without losing information about what that RdrName was. This is
important when printing error messages.
I also added a test which checks the Template Haskell deferral of out of
scope qualified names works properly.
Fixes #22130
- - - - -
3c3060e4 by Richard Eisenberg at 2022-12-24T17:34:19+00:00
Drop support for kind constraints.
This implements proposal 547 and closes ticket #22298.
See the proposal and ticket for motivation.
Compiler perf improves a bit
Metrics: compile_time/bytes allocated
-------------------------------------
CoOpt_Singletons(normal) -2.4% GOOD
T12545(normal) +1.0%
T13035(normal) -13.5% GOOD
T18478(normal) +0.9%
T9872d(normal) -2.2% GOOD
geo. mean -0.2%
minimum -13.5%
maximum +1.0%
Metric Decrease:
CoOpt_Singletons
T13035
T9872d
- - - - -
6d7d4393 by Ben Gamari at 2022-12-24T21:09:56-05:00
hadrian: Ensure that linker scripts are used when merging objects
In #22527 @rui314 inadvertantly pointed out a glaring bug in Hadrian's
implementation of the object merging rules: unlike the old `make` build
system we utterly failed to pass the needed linker scripts. Fix this.
- - - - -
a5bd0eb8 by Andrew Lelechenko at 2022-12-24T21:10:34-05:00
Document infelicities of instance Ord Double and workarounds
- - - - -
62b9a7b2 by Zubin Duggal at 2023-01-03T12:22:11+00:00
Force the Docs structure to prevent leaks in GHCi with -haddock without -fwrite-interface
Involves adding many new NFData instances.
Without forcing Docs, references to the TcGblEnv for each module are retained
by the Docs structure. Usually these are forced when the ModIface is serialised
but not when we aren't writing the interface.
- - - - -
21bedd84 by Facundo Domínguez at 2023-01-03T23:27:30-05:00
Explain the auxiliary functions of permutations
- - - - -
32255d05 by Matthew Pickering at 2023-01-04T11:58:42+00:00
compiler: Add -f[no-]split-sections flags
Here we add a `-fsplit-sections` flag which may some day replace
`-split-sections`. This has the advantage of automatically providing a
`-fno-split-sections` flag, which is useful for our packaging because we
enable `-split-sections` by default but want to disable it in certain
configurations.
- - - - -
e640940c by Matthew Pickering at 2023-01-04T11:58:42+00:00
hadrian: Fix computation of tables_next_to_code for outOfTreeCompiler
This copy-pasto was introduced in de5fb3489f2a9bd6dc75d0cb8925a27fe9b9084b
- - - - -
15bee123 by Matthew Pickering at 2023-01-04T11:58:42+00:00
hadrian: Add test:all_deps to build just testsuite dependencies
Fixes #22534
- - - - -
fec6638e by Matthew Pickering at 2023-01-04T11:58:42+00:00
hadrian: Add no_split_sections tranformer
This transformer reverts the effect of `split_sections`, which we intend
to use for platforms which don't support split sections.
In order to achieve this we have to modify the implemntation of the
split_sections transformer to store whether we are enabling
split_sections directly in the `Flavour` definition. This is because
otherwise there's no convenient way to turn off split_sections due to
having to pass additional linker scripts when merging objects.
- - - - -
3dc05726 by Matthew Pickering at 2023-01-04T11:58:42+00:00
check-exact: Fix build with -Werror
- - - - -
53a6ae7a by Matthew Pickering at 2023-01-04T11:58:42+00:00
ci: Build all test dependencies with in-tree compiler
This means that these executables will honour flavour transformers such
as "werror".
Fixes #22555
- - - - -
32e264c1 by Matthew Pickering at 2023-01-04T11:58:42+00:00
hadrian: Document using GHC environment variable to select boot compiler
Fixes #22340
- - - - -
be9dd9b0 by Matthew Pickering at 2023-01-04T11:58:42+00:00
packaging: Build perf builds with -split-sections
In 8f71d958 the make build system was made to use split-sections on
linux systems but it appears this logic never made it to hadrian.
There is the split_sections flavour transformer but this doesn't appear
to be used for perf builds on linux.
This is disbled on deb9 and windows due to #21670
Closes #21135
- - - - -
00dc5106 by Matthew Pickering at 2023-01-04T14:32:45-05:00
sphinx: Use modern syntax for extlinks
This fixes the following build error:
```
Command line: /opt/homebrew/opt/sphinx-doc/bin/sphinx-build -b man -d /private/tmp/extra-dir-55768274273/.doctrees-man -n -w /private/tmp/extra-dir-55768274273/.log docs/users_guide /private/tmp/extra-dir-55768274273
===> Command failed with error code: 2
Exception occurred:
File "/opt/homebrew/Cellar/sphinx-doc/6.0.0/libexec/lib/python3.11/site-packages/sphinx/ext/extlinks.py", line 101, in role
title = caption % part
~~~~~~~~^~~~~~
TypeError: not all arguments converted during string formatting
```
I tested on Sphinx-5.1.1 and Sphinx-6.0.0
Thanks for sterni for providing instructions about how to test using
sphinx-6.0.0.
Fixes #22690
- - - - -
541aedcd by Krzysztof Gogolewski at 2023-01-05T10:48:34-05:00
Misc cleanup
- Remove unused uniques and hs-boot declarations
- Fix types of seq and unsafeCoerce#
- Remove FastString/String roundtrip in JS
- Use TTG to enforce totality
- Remove enumeration in Heap/Inspect; the 'otherwise' clause
serves the primitive types well.
- - - - -
22bb8998 by Alan Zimmerman at 2023-01-05T10:49:09-05:00
EPA: Do not collect comments from end of file
In Parser.y semis1 production triggers for the virtual semi at the end
of the file. This is detected by it being zero length.
In this case, do not extend the span being used to gather comments, so
any final comments are allocated at the module level instead.
- - - - -
9e077999 by Vladislav Zavialov at 2023-01-05T23:01:55-05:00
HsToken in TypeArg (#19623)
Updates the haddock submodule.
- - - - -
b2a2db04 by Matthew Pickering at 2023-01-05T23:02:30-05:00
Revert "configure: Drop uses of AC_PROG_CC_C99"
This reverts commit 7c6de18dd3151ead954c210336728e8686c91de6.
Centos7 using a very old version of the toolchain (autotools-2.69) where
the behaviour of these macros has not yet changed. I am reverting this
without haste as it is blocking the 9.6 branch.
Fixes #22704
- - - - -
28f8c0eb by Luite Stegeman at 2023-01-06T18:16:24+09:00
Add support for sized literals in the bytecode interpreter.
The bytecode interpreter only has branching instructions for
word-sized values. These are used for pattern matching.
Branching instructions for other types (e.g. Int16# or Word8#)
weren't needed, since unoptimized Core or STG never requires
branching on types like this.
It's now possible for optimized STG to reach the bytecode
generator (e.g. fat interface files or certain compiler flag
combinations), which requires dealing with various sized
literals in branches.
This patch improves support for generating bytecode from
optimized STG by adding the following new bytecode
instructions:
TESTLT_I64
TESTEQ_I64
TESTLT_I32
TESTEQ_I32
TESTLT_I16
TESTEQ_I16
TESTLT_I8
TESTEQ_I8
TESTLT_W64
TESTEQ_W64
TESTLT_W32
TESTEQ_W32
TESTLT_W16
TESTEQ_W16
TESTLT_W8
TESTEQ_W8
Fixes #21945
- - - - -
ac39e8e9 by Matthew Pickering at 2023-01-06T13:47:00-05:00
Only store Name in FunRhs rather than Id with knot-tied fields
All the issues here have been caused by #18758.
The goal of the ticket is to be able to talk about things like
`LTyClDecl GhcTc`. In the case of HsMatchContext,
the correct "context" is whatever we want, and in fact storing just a
`Name` is sufficient and correct context, even if the rest of the AST is
storing typechecker Ids.
So this reverts (#20415, !5579) which intended to get closed to #18758 but
didn't really and introduced a few subtle bugs.
Printing of an error message in #22695 would just hang, because we would
attempt to print the `Id` in debug mode to assertain whether it was
empty or not. Printing the Name is fine for the error message.
Another consequence is that when `-dppr-debug` was enabled the compiler would
hang because the debug printing of the Id would try and print fields
which were not populated yet.
This also led to 32070e6c2e1b4b7c32530a9566fe14543791f9a6 having to add
a workaround for the `checkArgs` function which was probably a very
similar bug to #22695.
Fixes #22695
- - - - -
c306d939 by Matthew Pickering at 2023-01-06T22:08:53-05:00
ci: Upgrade darwin, windows and freebsd CI to use GHC-9.4.3
Fixes #22599
- - - - -
0db496ff by Matthew Pickering at 2023-01-06T22:08:53-05:00
darwin ci: Explicitly pass desired build triple to configure
On the zw3rk machines for some reason the build machine was inferred to
be arm64. Setting the build triple appropiately resolve this confusion
and we produce x86 binaries.
- - - - -
2459c358 by Ben Gamari at 2023-01-06T22:09:29-05:00
rts: MUT_VAR is not a StgMutArrPtrs
There was previously a comment claiming that the MUT_VAR closure type
had the layout of StgMutArrPtrs.
- - - - -
6206cb92 by Simon Peyton Jones at 2023-01-07T12:14:40-05:00
Make FloatIn robust to shadowing
This MR fixes #22622. See the new
Note [Shadowing and name capture]
I did a bit of refactoring in sepBindsByDropPoint too.
The bug doesn't manifest in HEAD, but it did show up in 9.4,
so we should backport this patch to 9.4
- - - - -
a960ca81 by Matthew Pickering at 2023-01-07T12:15:15-05:00
T10955: Set DYLD_LIBRARY_PATH for darwin
The correct path to direct the dynamic linker on darwin is
DYLD_LIBRARY_PATH rather than LD_LIBRARY_PATH. On recent versions of OSX
using LD_LIBRARY_PATH seems to have stopped working.
For more reading see:
https://stackoverflow.com/questions/3146274/is-it-ok-to-use-dyld-library-pa…
- - - - -
73484710 by Matthew Pickering at 2023-01-07T12:15:15-05:00
Skip T18623 on darwin (to add to the long list of OSs)
On recent versions of OSX, running `ulimit -v` results in
```
ulimit: setrlimit failed: invalid argument
```
Time is too short to work out what random stuff Apple has been doing
with ulimit, so just skip the test like we do for other platforms.
- - - - -
8c0ea25f by Matthew Pickering at 2023-01-07T12:15:15-05:00
Pass -Wl,-no_fixup_chains to ld64 when appropiate
Recent versions of MacOS use a version of ld where `-fixup_chains` is on by default.
This is incompatible with our usage of `-undefined dynamic_lookup`. Therefore we
explicitly disable `fixup-chains` by passing `-no_fixup_chains` to the linker on
darwin. This results in a warning of the form:
ld: warning: -undefined dynamic_lookup may not work with chained fixups
The manual explains the incompatible nature of these two flags:
-undefined treatment
Specifies how undefined symbols are to be treated. Options are: error, warning,
suppress, or dynamic_lookup. The default is error. Note: dynamic_lookup that
depends on lazy binding will not work with chained fixups.
A relevant ticket is #22429
Here are also a few other links which are relevant to the issue:
Official comment: https://developer.apple.com/forums/thread/719961
More relevant links:
https://openradar.appspot.com/radar?id=5536824084660224
https://github.com/python/cpython/issues/97524
Note in release notes: https://developer.apple.com/documentation/xcode-release-notes/xcode-13-rele… e-notes
- - - - -
365b3045 by Matthew Pickering at 2023-01-09T02:36:20-05:00
Disable split sections on aarch64-deb10 build
See #22722
Failure on this job:
https://gitlab.haskell.org/ghc/ghc/-/jobs/1287852
```
Unexpected failures:
/builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T10828.run T10828 [exit code non-0] (ext-interp)
/builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T13123.run T13123 [exit code non-0] (ext-interp)
/builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T20590.run T20590 [exit code non-0] (ext-interp)
Appending 232 stats to file: /builds/ghc/ghc/performance-metrics.tsv
```
```
Compile failed (exit code 1) errors were:
data family D_0 a_1 :: * -> *
data instance D_0 GHC.Types.Int GHC.Types.Bool :: * where
DInt_2 :: D_0 GHC.Types.Int GHC.Types.Bool
data E_3 where MkE_4 :: a_5 -> E_3
data Foo_6 a_7 b_8 where
MkFoo_9, MkFoo'_10 :: a_11 -> Foo_6 a_11 b_12
newtype Bar_13 :: * -> GHC.Types.Bool -> * where
MkBar_14 :: a_15 -> Bar_13 a_15 b_16
data T10828.T (a_0 :: *) where
T10828.MkT :: forall (a_1 :: *) . a_1 -> a_1 -> T10828.T a_1
T10828.MkC :: forall (a_2 :: *) (b_3 :: *) . (GHC.Types.~) a_2
GHC.Types.Int => {T10828.foo :: a_2,
T10828.bar :: b_3} -> T10828.T GHC.Types.Int
T10828.hs:1:1: error: [GHC-87897]
Exception when trying to run compile-time code:
ghc-iserv terminated (-4)
Code: (do TyConI dec <- runQ $ reify (mkName "T")
runIO $ putStrLn (pprint dec) >> hFlush stdout
d <- runQ
$ [d| data T' a :: Type
where
MkT' :: a -> a -> T' a
MkC' :: forall a b. (a ~ Int) => {foo :: a, bar :: b} -> T' Int |]
runIO $ putStrLn (pprint d) >> hFlush stdout
....)
*** unexpected failure for T10828(ext-interp)
=====> 7000 of 9215 [0, 1, 0]
=====> 7000 of 9215 [0, 1, 0]
=====> 7000 of 9215 [0, 1, 0]
=====> 7000 of 9215 [0, 1, 0]
Compile failed (exit code 1) errors were:
T13123.hs:1:1: error: [GHC-87897]
Exception when trying to run compile-time code:
ghc-iserv terminated (-4)
Code: ([d| data GADT
where MkGADT :: forall k proxy (a :: k). proxy a -> GADT |])
*** unexpected failure for T13123(ext-interp)
=====> 7100 of 9215 [0, 2, 0]
=====> 7100 of 9215 [0, 2, 0]
=====> 7200 of 9215 [0, 2, 0]
Compile failed (exit code 1) errors were:
T20590.hs:1:1: error: [GHC-87897]
Exception when trying to run compile-time code:
ghc-iserv terminated (-4)
Code: ([d| data T where MkT :: forall a. a -> T |])
*** unexpected failure for T20590(ext-interp)
```
Looks fairly worrying to me.
- - - - -
965a2735 by Alan Zimmerman at 2023-01-09T02:36:20-05:00
EPA: exact print HsDocTy
To match ghc-exactprint
https://github.com/alanz/ghc-exactprint/pull/121
- - - - -
5d65773e by John Ericson at 2023-01-09T20:39:27-05:00
Remove RTS hack for configuring
See the brand new Note [Undefined symbols in the RTS] for additional
details.
- - - - -
e3fff751 by Sebastian Graf at 2023-01-09T20:40:02-05:00
Handle shadowing in DmdAnal (#22718)
Previously, when we had a shadowing situation like
```hs
f x = ... -- demand signature <1L><1L>
main = ... \f -> f 1 ...
```
we'd happily use the shadowed demand signature at the call site inside the
lambda. Of course, that's wrong and solution is simply to remove the demand
signature from the `AnalEnv` when we enter the lambda.
This patch does so for all binding constructs Core.
In #22718 the issue was caused by LetUp not shadowing away the existing demand
signature for the let binder in the let body. The resulting absent error is
fickle to reproduce; hence no reproduction test case. #17478 would help.
Fixes #22718.
It appears that TcPlugin_Rewrite regresses by ~40% on Darwin. It is likely that
DmdAnal was exploiting ill-scoped analysis results.
Metric increase ['bytes allocated'] (test_env=x86_64-darwin-validate):
TcPlugin_Rewrite
- - - - -
d53f6f4d by Oleg Grenrus at 2023-01-09T21:11:02-05:00
Add safe list indexing operator: !?
With Joachim's amendments.
Implements https://github.com/haskell/core-libraries-committee/issues/110
- - - - -
cfaf1ad7 by Nicolas Trangez at 2023-01-09T21:11:03-05:00
rts, tests: limit thread name length to 15 bytes
On Linux, `pthread_setname_np` (or rather, the kernel) only allows for
thread names up to 16 bytes, including the terminating null byte.
This commit adds a note pointing this out in `createOSThread`, and fixes
up two instances where a thread name of more than 15 characters long was
used (in the RTS, and in a test-case).
Fixes: #22366
Fixes: https://gitlab.haskell.org/ghc/ghc/-/issues/22366
See: https://gitlab.haskell.org/ghc/ghc/-/issues/22366#note_460796
- - - - -
64286132 by Matthew Pickering at 2023-01-09T21:11:03-05:00
Store bootstrap_llvm_target and use it to set LlvmTarget in bindists
This mirrors some existing logic for the bootstrap_target which
influences how TargetPlatform is set.
As described on #21970 not storing this led to `LlvmTarget` being set incorrectly
and hence the wrong `--target` flag being passed to the C compiler.
Towards #21970
- - - - -
4724e8d1 by Matthew Pickering at 2023-01-09T21:11:04-05:00
Check for FP_LD_NO_FIXUP_CHAINS in installation configure script
Otherwise, when installing from a bindist the C flag isn't passed to the
C compiler.
This completes the fix for #22429
- - - - -
2e926b88 by Georgi Lyubenov at 2023-01-09T21:11:07-05:00
Fix outdated link to Happy section on sequences
- - - - -
146a1458 by Matthew Pickering at 2023-01-09T21:11:07-05:00
Revert "NCG(x86): Compile add+shift as lea if possible."
This reverts commit 20457d775885d6c3df020d204da9a7acfb3c2e5a.
See #22666 and #21777
- - - - -
6e6adbe3 by Jade Lovelace at 2023-01-11T00:55:30-05:00
Fix tcPluginRewrite example
- - - - -
faa57138 by Jade Lovelace at 2023-01-11T00:55:31-05:00
fix missing haddock pipe
- - - - -
0470ea7c by Florian Weimer at 2023-01-11T00:56:10-05:00
m4/fp_leading_underscore.m4: Avoid implicit exit function declaration
And switch to a new-style function definition.
Fixes build issues with compilers that do not accept implicit function
declarations.
- - - - -
b2857df4 by HaskellMouse at 2023-01-11T00:56:52-05:00
Added a new warning about compatibility with RequiredTypeArguments
This commit introduces a new warning
that indicates code incompatible with
future extension: RequiredTypeArguments.
Enabling this extension may break some code and the warning
will help to make it compatible in advance.
- - - - -
5f17e21a by Ben Gamari at 2023-01-11T00:57:27-05:00
testsuite: Drop testheapalloced.c
As noted in #22414, this file (which appears to be a benchmark for
characterising the one-step allocator's MBlock cache) is currently
unreferenced. Remove it.
Closes #22414.
- - - - -
bc125775 by Vladislav Zavialov at 2023-01-11T00:58:03-05:00
Introduce the TypeAbstractions language flag
GHC Proposals #448 "Modern scoped type variables"
and #425 "Invisible binders in type declarations"
introduce a new language extension flag: TypeAbstractions.
Part of the functionality guarded by this flag has already been
implemented, namely type abstractions in constructor patterns, but it
was guarded by a combination of TypeApplications and ScopedTypeVariables
instead of a dedicated language extension flag.
This patch does the following:
* introduces a new language extension flag TypeAbstractions
* requires TypeAbstractions for @a-syntax in constructor patterns
instead of TypeApplications and ScopedTypeVariables
* creates a User's Guide page for TypeAbstractions and
moves the "Type Applications in Patterns" section there
To avoid a breaking change, the new flag is implied by
ScopedTypeVariables and is retroactively added to GHC2021.
Metric Decrease:
MultiLayerModulesTH_OneShot
- - - - -
083f7015 by Krzysztof Gogolewski at 2023-01-11T00:58:38-05:00
Misc cleanup
- Remove unused mkWildEvBinder
- Use typeTypeOrConstraint - more symmetric and asserts that
that the type is Type or Constraint
- Fix escape sequences in Python; they raise a deprecation warning
with -Wdefault
- - - - -
aed1974e by Richard Eisenberg at 2023-01-11T08:30:42+00:00
Refactor the treatment of loopy superclass dicts
This patch completely re-engineers how we deal with loopy superclass
dictionaries in instance declarations. It fixes #20666 and #19690
The highlights are
* Recognise that the loopy-superclass business should use precisely
the Paterson conditions. This is much much nicer. See
Note [Recursive superclasses] in GHC.Tc.TyCl.Instance
* With that in mind, define "Paterson-smaller" in
Note [Paterson conditions] in GHC.Tc.Validity, and the new
data type `PatersonSize` in GHC.Tc.Utils.TcType, along with
functions to compute and compare PatsonSizes
* Use the new PatersonSize stuff when solving superclass constraints
See Note [Solving superclass constraints] in GHC.Tc.TyCl.Instance
* In GHC.Tc.Solver.Monad.lookupInInerts, add a missing call to
prohibitedSuperClassSolve. This was the original cause of #20666.
* Treat (TypeError "stuff") as having PatersonSize zero. See
Note [Paterson size for type family applications] in GHC.Tc.Utils.TcType.
* Treat the head of a Wanted quantified constraint in the same way
as the superclass of an instance decl; this is what fixes #19690.
See GHC.Tc.Solver.Canonical Note [Solving a Wanted forall-constraint]
(Thanks to Matthew Craven for this insight.)
This entailed refactoring the GivenSc constructor of CtOrigin a bit,
to say whether it comes from an instance decl or quantified constraint.
* Some refactoring way in which redundant constraints are reported; we
don't want to complain about the extra, apparently-redundant
constraints that we must add to an instance decl because of the
loopy-superclass thing. I moved some work from GHC.Tc.Errors to
GHC.Tc.Solver.
* Add a new section to the user manual to describe the loopy
superclass issue and what rules it follows.
- - - - -
300bcc15 by HaskellMouse at 2023-01-11T13:43:36-05:00
Parse qualified terms in type signatures
This commit allows qualified terms in type
signatures to pass the parser and to be cathced by renamer
with more informative error message. Adds a few tests.
Fixes #21605
- - - - -
964284fc by Simon Peyton Jones at 2023-01-11T13:44:12-05:00
Fix void-arg-adding mechanism for worker/wrapper
As #22725 shows, in worker/wrapper we must add the void argument
/last/, not first. See GHC.Core.Opt.WorkWrap.Utils
Note [Worker/wrapper needs to add void arg last].
That led me to to study GHC.Core.Opt.SpecConstr
Note [SpecConstr needs to add void args first] which suggests the
opposite! And indeed I think it's the other way round for SpecConstr
-- or more precisely the void arg must precede the "extra_bndrs".
That led me to some refactoring of GHC.Core.Opt.SpecConstr.calcSpecInfo.
- - - - -
f7ceafc9 by Krzysztof Gogolewski at 2023-01-11T22:36:59-05:00
Add 'docWithStyle' to improve codegen
This new combinator
docWithStyle :: IsOutput doc => doc -> (PprStyle -> SDoc) -> doc
let us remove the need for code to be polymorphic in HDoc
when not used in code style.
Metric Decrease:
ManyConstructors
T13035
T1969
- - - - -
b3be0d18 by Simon Peyton Jones at 2023-01-11T22:37:35-05:00
Fix finaliseArgBoxities for OPAQUE function
We never do worker wrapper for OPAQUE functions, so we must
zap the unboxing info during strictness analysis.
This patch fixes #22502
- - - - -
db11f358 by Ben Gamari at 2023-01-12T07:49:04-05:00
Revert "rts: Drop racy assertion"
The logic here was inverted. Reverting the commit to avoid confusion
when examining the commit history.
This reverts commit b3eacd64fb36724ed6c5d2d24a81211a161abef1.
- - - - -
3242139f by Ben Gamari at 2023-01-12T07:49:04-05:00
rts: Drop racy assertion
0e274c39bf836d5bb846f5fa08649c75f85326ac added an assertion in
`dirty_MUT_VAR` checking that the MUT_VAR being dirtied was clean.
However, this isn't necessarily the case since another thread may have
raced us to dirty the object.
- - - - -
9ffd5d57 by Ben Gamari at 2023-01-12T07:49:41-05:00
configure: Fix escaping of `$tooldir`
In !9547 I introduced `$tooldir` directories into GHC's default link and
compilation flags to ensure that our C toolchain finds its own headers
and libraries before others on the system. However, the patch was subtly
wrong in the escaping of `$tooldir`. Fix this.
Fixes #22561.
- - - - -
905d0b6e by Sebastian Graf at 2023-01-12T15:51:47-05:00
Fix contification with stable unfoldings (#22428)
Many functions now return a `TailUsageDetails` that adorns a `UsageDetails` with
a `JoinArity` that reflects the number of join point binders around the body
for which the `UsageDetails` was computed. `TailUsageDetails` is now returned by
`occAnalLamTail` as well as `occAnalUnfolding` and `occAnalRules`.
I adjusted `Note [Join points and unfoldings/rules]` and
`Note [Adjusting right-hand sides]` to account for the new machinery.
I also wrote a new `Note [Join arity prediction based on joinRhsArity]`
and refer to it when we combine `TailUsageDetails` for a recursive RHS.
I also renamed
* `occAnalLam` to `occAnalLamTail`
* `adjustRhsUsage` to `adjustTailUsage`
* a few other less important functions
and properly documented the that each call of `occAnalLamTail` must pair up with
`adjustTailUsage`.
I removed `Note [Unfoldings and join points]` because it was redundant with
`Note [Occurrences in stable unfoldings]`.
While in town, I refactored `mkLoopBreakerNodes` so that it returns a condensed
`NodeDetails` called `SimpleNodeDetails`.
Fixes #22428.
The refactoring seems to have quite beneficial effect on ghc/alloc performance:
```
CoOpt_Read(normal) ghc/alloc 784,778,420 768,091,176 -2.1% GOOD
T12150(optasm) ghc/alloc 77,762,270 75,986,720 -2.3% GOOD
T12425(optasm) ghc/alloc 85,740,186 84,641,712 -1.3% GOOD
T13056(optasm) ghc/alloc 306,104,656 299,811,632 -2.1% GOOD
T13253(normal) ghc/alloc 350,233,952 346,004,008 -1.2%
T14683(normal) ghc/alloc 2,800,514,792 2,754,651,360 -1.6%
T15304(normal) ghc/alloc 1,230,883,318 1,215,978,336 -1.2%
T15630(normal) ghc/alloc 153,379,590 151,796,488 -1.0%
T16577(normal) ghc/alloc 7,356,797,056 7,244,194,416 -1.5%
T17516(normal) ghc/alloc 1,718,941,448 1,692,157,288 -1.6%
T19695(normal) ghc/alloc 1,485,794,632 1,458,022,112 -1.9%
T21839c(normal) ghc/alloc 437,562,314 431,295,896 -1.4% GOOD
T21839r(normal) ghc/alloc 446,927,580 440,615,776 -1.4% GOOD
geo. mean -0.6%
minimum -2.4%
maximum -0.0%
```
Metric Decrease:
CoOpt_Read
T10421
T12150
T12425
T13056
T18698a
T18698b
T21839c
T21839r
T9961
- - - - -
a1491c87 by Andreas Klebinger at 2023-01-12T15:52:23-05:00
Only gc sparks locally when we can ensure marking is done.
When performing GC without work stealing there was no guarantee that
spark pruning was happening after marking of the sparks. This could
cause us to GC live sparks under certain circumstances.
Fixes #22528.
- - - - -
8acfe930 by Cheng Shao at 2023-01-12T15:53:00-05:00
Change MSYSTEM to CLANG64 uniformly
- - - - -
73bc162b by M Farkas-Dyck at 2023-01-12T15:53:42-05:00
Make `GHC.Tc.Errors.Reporter` take `NonEmpty ErrorItem` rather than `[ErrorItem]`, which lets us drop some panics.
Also use the `BasicMismatch` constructor rather than `mkBasicMismatchMsg`, which lets us drop the "-Wno-incomplete-record-updates" flag.
- - - - -
1b812b69 by Oleg Grenrus at 2023-01-12T15:54:21-05:00
Fix #22728: Not all diagnostics in safe check are fatal
Also add tests for the issue and -Winferred-safe-imports in general
- - - - -
c79b2b65 by Matthew Pickering at 2023-01-12T15:54:58-05:00
Don't run hadrian-multi on fast-ci label
Fixes #22667
- - - - -
9a3d6add by Andrew Lelechenko at 2023-01-13T00:46:36-05:00
Bump submodule bytestring to 0.11.4.0
Metric Decrease:
T21839c
T21839r
- - - - -
df33c13c by Ben Gamari at 2023-01-13T00:47:12-05:00
gitlab-ci: Bump Darwin bootstrap toolchain
This updates the bootstrap compiler on Darwin from 8.10.7 to 9.2.5,
ensuring that we have the fix for #21964.
- - - - -
756a66ec by Ben Gamari at 2023-01-13T00:47:12-05:00
gitlab-ci: Pass -w to cabal update
Due to cabal#8447, cabal-install 3.8.1.0 requires a compiler to run
`cabal update`.
- - - - -
1142f858 by Cheng Shao at 2023-01-13T11:04:00+00:00
Bump hsc2hs submodule
- - - - -
d4686729 by Cheng Shao at 2023-01-13T11:04:00+00:00
Bump process submodule
- - - - -
84ae6573 by Cheng Shao at 2023-01-13T11:06:58+00:00
ci: Bump DOCKER_REV
- - - - -
d53598c5 by Cheng Shao at 2023-01-13T11:06:58+00:00
ci: enable xz parallel compression for x64 jobs
- - - - -
d31fcbca by Cheng Shao at 2023-01-13T11:06:58+00:00
ci: use in-image emsdk for js jobs
- - - - -
93b9bbc1 by Cheng Shao at 2023-01-13T11:47:17+00:00
ci: improve nix-shell for gen_ci.hs and fix some ghc/hlint warnings
- Add a ghc environment including prebuilt dependencies to the
nix-shell. Get rid of the ad hoc cabal cache and all dependencies
are now downloaded from the nixos binary cache.
- Make gen_ci.hs a cabal package with HLS integration, to make future
hacking of gen_ci.hs easier.
- Fix some ghc/hlint warnings after I got HLS to work.
- For the lint-ci-config job, do a shallow clone to save a few minutes
of unnecessary git checkout time.
- - - - -
8acc56c7 by Cheng Shao at 2023-01-13T11:47:17+00:00
ci: source the toolchain env file in wasm jobs
- - - - -
87194df0 by Cheng Shao at 2023-01-13T11:47:17+00:00
ci: add wasm ci jobs via gen_ci.hs
- There is one regular wasm job run in validate pipelines
- Additionally, int-native/unreg wasm jobs run in nightly/release pipelines
Also, remove the legacy handwritten wasm ci jobs in .gitlab-ci.yml.
- - - - -
b6eb9bcc by Matthew Pickering at 2023-01-13T11:52:16+00:00
wasm ci: Remove wasm release jobs
This removes the wasm release jobs, as we do not yet intend to
distribute these binaries.
- - - - -
496607fd by Simon Peyton Jones at 2023-01-13T16:52:07-05:00
Add a missing checkEscapingKind
Ticket #22743 pointed out that there is a missing check,
for type-inferred bindings, that the inferred type doesn't
have an escaping kind.
The fix is easy.
- - - - -
7a9a1042 by Andreas Klebinger at 2023-01-16T20:48:19-05:00
Separate core inlining logic from `Unfolding` type.
This seems like a good idea either way, but is mostly motivated by a
patch where this avoids a module loop.
- - - - -
33b58f77 by sheaf at 2023-01-16T20:48:57-05:00
Hadrian: generalise &%> to avoid warnings
This patch introduces a more general version of &%> that works
with general traversable shapes, instead of lists. This allows us
to pass along the information that the length of the list of filepaths
passed to the function exactly matches the length of the input list
of filepath patterns, avoiding pattern match warnings.
Fixes #22430
- - - - -
8c7a991c by Andreas Klebinger at 2023-01-16T20:49:34-05:00
Add regression test for #22611.
A case were a function used to fail to specialize, but now does.
- - - - -
6abea760 by Andreas Klebinger at 2023-01-16T20:50:10-05:00
Mark maximumBy/minimumBy as INLINE.
The RHS was too large to inline which often prevented the overhead of the Maybe
from being optimized away. By marking it as INLINE we can eliminate the
overhead of both the maybe and are able to unpack the accumulator when
possible.
Fixes #22609
- - - - -
99d151bb by Matthew Pickering at 2023-01-16T20:50:50-05:00
ci: Bump CACHE_REV so that ghc-9.6 branch and HEAD have different caches
Having the same CACHE_REV on both branches leads to issues where the
darwin toolchain is different on ghc-9.6 and HEAD which leads to long
darwin build times.
In general we should ensure that each branch has a different CACHE_REV.
- - - - -
6a5845fb by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Change owner of files in source-tarball job
This fixes errors of the form:
```
fatal: detected dubious ownership in repository at '/builds/ghc/ghc'
To add an exception for this directory, call:
git config --global --add safe.directory /builds/ghc/ghc
inferred 9.7.20230113
checking for GHC Git commit id... fatal: detected dubious ownership in repository at '/builds/ghc/ghc'
To add an exception for this directory, call:
git config --global --add safe.directory /builds/ghc/ghc
```
- - - - -
4afb952c by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Don't build aarch64-deb10-llvm job on release pipelines
Closes #22721
- - - - -
8039feb9 by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Change owner of files in test-bootstrap job
- - - - -
0b358d0c by Matthew Pickering at 2023-01-16T20:51:25-05:00
rel_eng: Add release engineering scripts into ghc tree
It is better to keep these scripts in the tree as they depend on the CI
configuration and so on. By keeping them in tree we can keep them
up-to-date as the CI config changes and also makes it easier to backport
changes to the release script between release branches in future.
The final motivation is that it makes generating GHCUp metadata
possible.
- - - - -
28cb2ed0 by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Don't use complicated image or clone in not-interruptible job
This job exists only for the meta-reason of not allowing nightly
pipelines to be cancelled. It was taking two minutes to run as in order
to run "true" we would also clone the whole GHC repo.
- - - - -
eeea59bb by Matthew Pickering at 2023-01-16T20:51:26-05:00
Add scripts to generate ghcup metadata on nightly and release pipelines
1. A python script in .gitlab/rel_eng/mk-ghcup-metadata which generates
suitable metadata for consumption by GHCUp for the relevant
pipelines.
- The script generates the metadata just as the ghcup maintainers
want, without taking into account platform/library combinations. It
is updated manually when the mapping changes.
- The script downloads the bindists which ghcup wants to distribute,
calculates the hash and generates the yaml in the correct structure.
- The script is documented in the .gitlab/rel_eng/mk-ghcup-metadata/README.mk file
1a. The script requires us to understand the mapping from platform ->
job. To choose the preferred bindist for each platform the
.gitlab/gen_ci.hs script is modified to allow outputting a metadata
file which answers the question about which job produces the
bindist which we want to distribute to users for a specific
platform.
2. Pipelines to run on nightly and release jobs to generate metadata
- ghcup-metadata-nightly: Generates metadata which points directly to
artifacts in the nightly job.
- ghcup-metadata-release: Generates metadata suitable for inclusion
directly in ghcup by pointing to the downloads folder where the
bindist will be uploaded to.
2a. Trigger jobs which test the generated metadata in the downstream
`ghccup-ci` repo. See that repo for documentation about what is
tested and how but essentially we test in a variety of clean images
that ghcup can download and install the bindists we say exist in our
metadata.
- - - - -
97bd4d8c by Andrew Lelechenko at 2023-01-16T20:52:04-05:00
Bump submodule parsec to 3.1.16.1
- - - - -
97ac8230 by Alan Zimmerman at 2023-01-16T20:52:39-05:00
EPA: Add annotation for 'type' in DataDecl
Closes #22765
- - - - -
dbbab95d by Ben Gamari at 2023-01-17T06:36:06-05:00
compiler: Small optimisation of assertM
In #22739 @AndreasK noticed that assertM performed the action to compute
the asserted predicate regardless of whether DEBUG is enabled. This is
inconsistent with the other assertion operations and general convention.
Fix this.
Closes #22739.
- - - - -
fc02f3bb by Viktor Dukhovni at 2023-01-17T06:36:47-05:00
Avoid unnecessary printf warnings in EventLog.c
Fixes #22778
- - - - -
003b6d44 by Simon Peyton Jones at 2023-01-17T16:33:05-05:00
Document the semantics of pattern bindings a bit better
This MR is in response to the discussion on #22719
- - - - -
f4d50baf by Vladislav Zavialov at 2023-01-17T16:33:41-05:00
Hadrian: fix warnings (#22783)
This change fixes the following warnings when building Hadrian:
src/Hadrian/Expression.hs:38:10: warning: [-Wredundant-constraints]
src/Hadrian/Expression.hs:84:13: warning: [-Wtype-equality-requires-operators]
src/Hadrian/Expression.hs:84:21: warning: [-Wtype-equality-requires-operators]
src/Hadrian/Haskell/Cabal/Parse.hs:67:1: warning: [-Wunused-imports]
- - - - -
06036d93 by Sylvain Henry at 2023-01-18T01:55:10-05:00
testsuite: req_smp --> req_target_smp, req_ghc_smp
See #22630 and !9552
This commit:
- splits req_smp into req_target_smp and req_ghc_smp
- changes the testsuite driver to calculate req_ghc_smp
- changes a handful of tests to use req_target_smp instead of req_smp
- changes a handful of tests to use req_host_smp when needed
The problem:
- the problem this solves is the ambiguity surrounding req_smp
- on master req_smp was used to express the constraint that the program
being compiled supports smp _and_ that the host RTS (i.e., the RTS used
to compile the program) supported smp. Normally that is fine, but in
cross compilation this is not always the case as was discovered in #22630.
The solution:
- Differentiate the two constraints:
- use req_target_smp to say the RTS the compiled program is linked
with (and the platform) supports smp
- use req_host_smp to say the RTS the host is linked with supports smp
WIP: fix req_smp (target vs ghc)
add flag to separate bootstrapper
split req_smp -> req_target_smp and req_ghc_smp
update tests smp flags
cleanup and add some docstrings
only set ghc_with_smp to bootstrapper on S1 or CC
Only set ghc_with_smp to bootstrapperWithSMP of when testing stage 1
and cross compiling
test the RTS in config/ghc not hadrian
re-add ghc_with_smp
fix and align req names
fix T11760 to use req_host_smp
test the rts directly, avoid python 3.5 limitation
test the compiler in a try block
align out of tree and in tree withSMP flags
mark failing tests as host req smp
testsuite: req_host_smp --> req_ghc_smp
Fix ghc vs host, fix ghc_with_smp leftover
- - - - -
ee9b78aa by Krzysztof Gogolewski at 2023-01-18T01:55:45-05:00
Use -Wdefault when running Python testdriver (#22727)
- - - - -
e9c0537c by Vladislav Zavialov at 2023-01-18T01:56:22-05:00
Enable -Wstar-is-type by default (#22759)
Following the plan in GHC Proposal #143 "Remove the * kind syntax",
which states:
In the next release (or 3 years in), enable -fwarn-star-is-type by default.
The "next release" happens to be 9.6.1
I also moved the T21583 test case from should_fail to should_compile,
because the only reason it was failing was -Werror=compat in our test
suite configuration.
- - - - -
4efee43d by Ryan Scott at 2023-01-18T01:56:59-05:00
Add missing parenthesizeHsType in cvtSigTypeKind
We need to ensure that the output of `cvtSigTypeKind` is parenthesized (at
precedence `sigPrec`) so that any type signatures with an outermost, explicit
kind signature can parse correctly.
Fixes #22784.
- - - - -
f891a442 by Ben Gamari at 2023-01-18T07:28:00-05:00
Bump ghc-tarballs to fix #22497
It turns out that gmp 6.2.1 uses the platform-reserved `x18` register on
AArch64/Darwin. This was fixed in upstream changeset 18164:5f32dbc41afc,
which was merged in 2020. Here I backport this patch although I do hope
that a new release is forthcoming soon.
Bumps gmp-tarballs submodule.
Fixes #22497.
- - - - -
b13c6ea5 by Ben Gamari at 2023-01-18T07:28:00-05:00
Bump gmp-tarballs submodule
This backports the upstream fix for CVE-2021-43618, fixing #22789.
- - - - -
c45a5fff by Cheng Shao at 2023-01-18T07:28:37-05:00
Fix typo in recent darwin tests fix
Corrects a typo in !9647. Otherwise T18623 will still fail on darwin
and stall other people's work.
- - - - -
b4c14c4b by Luite Stegeman at 2023-01-18T14:21:42-05:00
Add PrimCallConv support to GHCi
This adds support for calling Cmm code from bytecode using the native
calling convention, allowing modules that use `foreign import prim`
to be loaded and debugged in GHCi.
This patch introduces a new `PRIMCALL` bytecode instruction and
a helper stack frame `stg_primcall`. The code is based on the
existing functionality for dealing with unboxed tuples in bytecode,
which has been generalised to handle arbitrary calls.
Fixes #22051
- - - - -
d0a63ef8 by Adam Gundry at 2023-01-18T14:22:26-05:00
Refactor warning flag parsing to add missing flags
This adds `-Werror=<group>` and `-fwarn-<group>` flags for warning
groups as well as individual warnings. Previously these were defined
on an ad hoc basis so for example we had `-Werror=compat` but not
`-Werror=unused-binds`, whereas we had `-fwarn-unused-binds` but not
`-fwarn-compat`. Fixes #22182.
- - - - -
7ed1b8ef by Adam Gundry at 2023-01-18T14:22:26-05:00
Minor corrections to comments
- - - - -
5389681e by Adam Gundry at 2023-01-18T14:22:26-05:00
Revise warnings documentation in user's guide
- - - - -
ab0d5cda by Adam Gundry at 2023-01-18T14:22:26-05:00
Move documentation of deferred type error flags out of warnings section
- - - - -
eb5a6b91 by John Ericson at 2023-01-18T22:24:10-05:00
Give the RTS it's own configure script
Currently it doesn't do much anything, we are just trying to introduce
it without breaking the build. Later, we will move functionality from
the top-level configure script over to it.
We need to bump Cabal for https://github.com/haskell/cabal/pull/8649; to
facilitate and existing hack of skipping some configure checks for the
RTS we now need to skip just *part* not *all* of the "post configure"
hook, as running the configure script (which we definitely want to do)
is also implemented as part of the "post configure" hook. But doing this
requires exposing functionality that wasn't exposed before.
- - - - -
32ab07bf by Andrew Lelechenko at 2023-01-18T22:24:51-05:00
ghc package does not have to depend on terminfo
- - - - -
981ff7c4 by Andrew Lelechenko at 2023-01-18T22:24:51-05:00
ghc-pkg does not have to depend on terminfo
- - - - -
f058e367 by Ben Gamari at 2023-01-18T22:25:27-05:00
nativeGen/X86: MFENCE is unnecessary for release semantics
In #22764 a user noticed that a program implementing a simple atomic
counter via an STRef regressed significantly due to the introduction of
necessary atomic operations in the MutVar# primops (#22468). This
regression was caused by a bug in the NCG, which emitted an unnecessary
MFENCE instruction for a release-ordered atomic write. MFENCE is rather
only needed to achieve sequentially consistent ordering.
Fixes #22764.
- - - - -
154889db by Ryan Scott at 2023-01-18T22:26:03-05:00
Add regression test for #22151
Issue #22151 was coincidentally fixed in commit
aed1974e92366ab8e117734f308505684f70cddf (`Refactor the treatment of loopy
superclass dicts`). This adds a regression test to ensure that the issue
remains fixed.
Fixes #22151.
- - - - -
14b5982a by Andrei Borzenkov at 2023-01-18T22:26:43-05:00
Fix printing of promoted MkSolo datacon (#22785)
Problem: In 2463df2f, the Solo data constructor was renamed to MkSolo,
and Solo was turned into a pattern synonym for backwards compatibility.
Since pattern synonyms can not be promoted, the old code that pretty-printed
promoted single-element tuples started producing ill-typed code:
t :: Proxy ('Solo Int)
This fails with "Pattern synonym ‘Solo’ used as a type"
The solution is to track the distinction between type constructors and data
constructors more carefully when printing single-element tuples.
- - - - -
1fe806d3 by Cheng Shao at 2023-01-23T04:48:47-05:00
hadrian: add hi_core flavour transformer
The hi_core flavour transformer enables -fwrite-if-simplified-core for
stage1 libraries, which emit core into interface files to make it
possible to restart code generation. Building boot libs with it makes
it easier to use GHC API to prototype experimental backends that needs
core/stg at link time.
- - - - -
317cad26 by Cheng Shao at 2023-01-23T04:48:47-05:00
hadrian: add missing docs for recently added flavour transformers
- - - - -
658f4446 by Ben Gamari at 2023-01-23T04:49:23-05:00
gitlab-ci: Add Rocky8 jobs
Addresses #22268.
- - - - -
a83ec778 by Vladislav Zavialov at 2023-01-23T04:49:58-05:00
Set "since: 9.8" for TypeAbstractions and -Wterm-variable-capture
These flags did not make it into the 9.6 release series,
so the "since" annotations must be corrected.
- - - - -
fec7c2ea by Alan Zimmerman at 2023-01-23T04:50:33-05:00
EPA: Add SourceText to HsOverLabel
To be able to capture string literals with possible escape codes as labels.
Close #22771
- - - - -
3efd1e99 by Ben Gamari at 2023-01-23T04:51:08-05:00
template-haskell: Bump version to 2.20.0.0
Updates `text` and `exceptions` submodules for bounds bumps.
Addresses #22767.
- - - - -
0900b584 by Cheng Shao at 2023-01-23T04:51:45-05:00
hadrian: disable alloca for in-tree GMP on wasm32
When building in-tree GMP for wasm32, disable its alloca usage, since
it may potentially cause stack overflow (e.g. #22602).
- - - - -
db0f1bfd by Cheng Shao at 2023-01-23T04:52:21-05:00
Bump process submodule
Includes a critical fix for wasm32, see
https://github.com/haskell/process/pull/272 for details. Also changes
the existing cross test to include process stuff and avoid future
regression here.
- - - - -
9222b167 by Matthew Pickering at 2023-01-23T04:52:57-05:00
ghcup metadata: Fix subdir for windows bindist
- - - - -
9a9bec57 by Matthew Pickering at 2023-01-23T04:52:57-05:00
ghcup metadata: Remove viPostRemove field from generated metadata
This has been removed from the downstream metadata.
- - - - -
82884ce0 by Simon Peyton Jones at 2023-01-23T04:53:32-05:00
Fix #22742
runtimeRepLevity_maybe was panicing unnecessarily; and
the error printing code made use of the case when it should
return Nothing rather than panicing.
For some bizarre reason perf/compiler/T21839r shows a 10% bump in runtime
peak-megagbytes-used, on a single architecture (alpine). See !9753 for
commentary, but I'm going to accept it.
Metric Increase:
T21839r
- - - - -
2c6deb18 by Bryan Richter at 2023-01-23T14:12:22+02:00
codeowners: Add Ben, Matt, and Bryan to CI
- - - - -
eee3bf05 by Matthew Craven at 2023-01-23T21:46:41-05:00
Do not collect compile-time metrics for T21839r
...the testsuite doesn't handle this properly since it
also collects run-time metrics. Compile-time metrics
for this test are already tracked via T21839c.
Metric Decrease:
T21839r
- - - - -
1d1dd3fb by Matthew Pickering at 2023-01-24T05:37:52-05:00
Fix recompilation checking for multiple home units
The key part of this change is to store a UnitId in the
`UsageHomeModule` and `UsageHomeModuleInterface`.
* Fine-grained dependency tracking is used if the dependency comes from
any home unit.
* We actually look up the right module when checking whether we need to
recompile in the `UsageHomeModuleInterface` case.
These scenarios are both checked by the new tests (
multipleHomeUnits_recomp and multipleHomeUnits_recomp_th )
Fixes #22675
- - - - -
7bfb30f9 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Augment target filepath by working directory when checking if module satisfies target
This fixes a spurious warning in -Wmissing-home-modules.
This is a simple oversight where when looking for the target in the
first place we augment the search by the -working-directory flag but
then fail to do so when checking this warning.
Fixes #22676
- - - - -
69500dd4 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Use NodeKey rather than ModuleName in pruneCache
The `pruneCache` function assumes that the list of `CachedInfo` all have unique `ModuleName`, this is not true:
* In normal compilation, the same module name can appear for a file and it's boot file.
* In multiple home unit compilation the same ModuleName can appear in different units
The fix is to use a `NodeKey` as the actual key for the interfaces which includes `ModuleName`, `IsBoot` and `UnitId`.
Fixes #22677
- - - - -
336b2b1c by Matthew Pickering at 2023-01-24T05:37:52-05:00
Recompilation checking: Don't try to find artefacts for Interactive & hs-boot combo
In interactive mode we don't produce any linkables for hs-boot files. So
we also need to not going looking for them when we check to see if we
have all the right objects needed for recompilation.
Ticket #22669
- - - - -
6469fea7 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Don't write o-boot files in Interactive mode
We should not be producing object files when in interactive mode but we
still produced the dummy o-boot files. These never made it into a
`Linkable` but then confused the recompilation checker.
Fixes #22669
- - - - -
06cc0a95 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Improve driver diagnostic messages by including UnitId in message
Currently the driver diagnostics don't give any indication about which unit they correspond to.
For example `-Wmissing-home-modules` can fire multiple times for each different home unit and gives no indication about which unit it's actually reporting about.
Perhaps a longer term fix is to generalise the providence information away from a SrcSpan so that these kind of whole project errors can be reported with an accurate provenance. For now we can just include the `UnitId` in the error message.
Fixes #22678
- - - - -
4fe9eaff by Matthew Pickering at 2023-01-24T05:37:52-05:00
Key ModSummary cache by UnitId as well as FilePath
Multiple units can refer to the same files without any problem. Just
another assumption which needs to be updated when we may have multiple
home units.
However, there is the invariant that within each unit each file only
maps to one module, so as long as we also key the cache by UnitId then
we are all good.
This led to some confusing behaviour in GHCi when reloading,
multipleHomeUnits_shared distils the essence of what can go wrong.
Fixes #22679
- - - - -
ada29f5c by Matthew Pickering at 2023-01-24T05:37:52-05:00
Finder: Look in current unit before looking in any home package dependencies
In order to preserve existing behaviour it's important to look within the current component before consideirng a module might come from an external component.
This already happened by accident in `downsweep`, (because roots are used to repopulated the cache) but in the `Finder` the logic was the wrong way around.
Fixes #22680
-------------------------
Metric Decrease:
MultiComponentModules
MultiComponentModulesRecomp
-------------------------p
- - - - -
be701cc6 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Debug: Print full NodeKey when pretty printing ModuleGraphNode
This is helpful when debugging multiple component issues.
- - - - -
34d2d463 by Krzysztof Gogolewski at 2023-01-24T05:38:32-05:00
Fix Lint check for duplicate external names
Lint was checking for duplicate external names by calling removeDups,
which needs a comparison function that is passed to Data.List.sortBy.
But the comparison was not a valid ordering - it returned LT
if one of the names was not external.
For example, the previous implementation won't find a duplicate in
[M.x, y, M.x].
Instead, we filter out non-external names before looking for duplicates.
- - - - -
1c050ed2 by Matthew Pickering at 2023-01-24T05:39:08-05:00
Add test for T22671
This was fixed by b13c6ea5
Closes #22671
- - - - -
05e6a2d9 by Tom Ellis at 2023-01-24T12:10:52-05:00
Clarify where `f` is defined
- - - - -
d151546e by Cheng Shao at 2023-01-24T12:11:29-05:00
CmmToC: fix CmmRegOff for 64-bit register on a 32-bit target
We used to print the offset value to a platform word sized integer.
This is incorrect when the offset is negative (e.g. output of cmm
constant folding) and the register is 64-bit but on a 32-bit target,
and may lead to incorrect runtime result (e.g. #22607).
The fix is simple: just treat it as a proper MO_Add, with the correct
width info inferred from the register itself.
Metric Increase:
T12707
T13379
T4801
T5321FD
T5321Fun
- - - - -
e5383a29 by Wander Hillen at 2023-01-24T20:02:26-05:00
Allow waiting for timerfd to be interrupted during rts shutdown
- - - - -
1957eda1 by Ryan Scott at 2023-01-24T20:03:01-05:00
Restore Compose's Read/Show behavior to match Read1/Show1 instances
Fixes #22816.
- - - - -
30972827 by Matthew Pickering at 2023-01-25T03:54:14-05:00
docs: Update INSTALL.md
Removes references to make.
Fixes #22480
- - - - -
bc038c3b by Cheng Shao at 2023-01-25T03:54:50-05:00
compiler: fix handling of MO_F_Neg in wasm NCG
In the wasm NCG, we used to compile MO_F_Neg to 0.0-x. It was an
oversight, there actually exists f32.neg/f64.neg opcodes in the wasm
spec and those should be used instead! The old behavior almost works,
expect when GHC compiles the -0.0 literal, which will incorrectly
become 0.0.
- - - - -
e987e345 by Sylvain Henry at 2023-01-25T14:47:41-05:00
Hadrian: correctly detect AR at-file support
Stage0's ar may not support at-files. Take it into account.
Found while cross-compiling from Darwin to Windows.
- - - - -
48131ee2 by Sylvain Henry at 2023-01-25T14:47:41-05:00
Hadrian: fix Windows cross-compilation
Decision to build either unix or Win32 package must be stage specific
for cross-compilation to be supported.
- - - - -
288fa017 by Sylvain Henry at 2023-01-25T14:47:41-05:00
Fix RTS build on Windows
This change fixes a cross-compilation issue from ArchLinux to Windows
because these symbols weren't found.
- - - - -
2fdf22ae by Sylvain Henry at 2023-01-25T14:47:41-05:00
configure: support "windows" as an OS
- - - - -
13a0566b by Simon Peyton Jones at 2023-01-25T14:48:16-05:00
Fix in-scope set in specImports
Nothing deep here; I had failed to bring some
floated dictionary binders into scope.
Exposed by -fspecialise-aggressively
Fixes #22715.
- - - - -
b7efdb24 by Matthew Pickering at 2023-01-25T14:48:51-05:00
ci: Disable HLint job due to excessive runtime
The HLint jobs takes much longer to run (20 minutes) after "Give the RTS it's own configure script" eb5a6b91
Now the CI job will build the stage0 compiler before it generates the necessary RTS headers.
We either need to:
* Fix the linting rules so they take much less time
* Revert the commit
* Remove the linting of base from the hlint job
* Remove the hlint job
This is highest priority as it is affecting all CI pipelines.
For now I am just disabling the job because there are many more pressing
matters at hand.
Ticket #22830
- - - - -
1bd32a35 by Sylvain Henry at 2023-01-26T12:34:21-05:00
Factorize hptModulesBelow
Create and use moduleGraphModulesBelow in GHC.Unit.Module.Graph that
doesn't need anything from the driver to be used.
- - - - -
1262d3f8 by Matthew Pickering at 2023-01-26T12:34:56-05:00
Store dehydrated data structures in CgModBreaks
This fixes a tricky leak in GHCi where we were retaining old copies of
HscEnvs when reloading. If not all modules were recompiled then these
hydrated fields in break points would retain a reference to the old
HscEnv which could double memory usage.
Fixes #22530
- - - - -
e27eb80c by Matthew Pickering at 2023-01-26T12:34:56-05:00
Force more in NFData Name instance
Doesn't force the lazy `OccName` field (#19619) which is already known
as a really bad source of leaks.
When we slam the hammer storing Names on disk (in interface files or the
like), all this should be forced as otherwise a `Name` can easily retain
an `Id` and hence the entire world.
Fixes #22833
- - - - -
3d004d5a by Matthew Pickering at 2023-01-26T12:34:56-05:00
Force OccName in tidyTopName
This occname has just been derived from an `Id`, so need to force it
promptly so we can release the Id back to the world.
Another symptom of the bug caused by #19619
- - - - -
f2a0fea0 by Matthew Pickering at 2023-01-26T12:34:56-05:00
Strict fields in ModNodeKey (otherwise retains HomeModInfo)
Towards #22530
- - - - -
5640cb1d by Sylvain Henry at 2023-01-26T12:35:36-05:00
Hadrian: fix doc generation
Was missing dependencies on files generated by templates (e.g.
ghc.cabal)
- - - - -
3e827c3f by Richard Eisenberg at 2023-01-26T20:06:53-05:00
Do newtype unwrapping in the canonicaliser and rewriter
See Note [Unwrap newtypes first], which has the details.
Close #22519.
- - - - -
b3ef5c89 by doyougnu at 2023-01-26T20:07:48-05:00
tryFillBuffer: strictify
more speculative bangs
- - - - -
d0d7ba0f by Vladislav Zavialov at 2023-01-26T20:08:25-05:00
base: NoImplicitPrelude in Data.Void and Data.Kind
This change removes an unnecessary dependency on Prelude
from two modules in the base package.
- - - - -
fa1db923 by Matthew Pickering at 2023-01-26T20:09:00-05:00
ci: Add ubuntu18_04 nightly and release jobs
This adds release jobs for ubuntu18_04 which uses glibc 2.27 which is
older than the 2.28 which is used by Rocky8 bindists.
Ticket #22268
- - - - -
807310a1 by Matthew Pickering at 2023-01-26T20:09:00-05:00
rel-eng: Add missing rocky8 bindist
We intend to release rocky8 bindist so the fetching script needs to know
about them.
- - - - -
c7116b10 by Ben Gamari at 2023-01-26T20:09:35-05:00
base: Make changelog proposal references more consistent
Addresses #22773.
- - - - -
6932cfc7 by Sylvain Henry at 2023-01-26T20:10:27-05:00
Fix spurious change from !9568
- - - - -
e480fbc2 by Ben Gamari at 2023-01-27T05:01:24-05:00
rts: Use C11-compliant static assertion syntax
Previously we used `static_assert` which is only available in C23. By
contrast, C11 only provides `_Static_assert`.
Fixes #22777
- - - - -
2648c09c by Andrei Borzenkov at 2023-01-27T05:02:07-05:00
Replace errors from badOrigBinding with new one (#22839)
Problem: in 02279a9c the type-level [] syntax was changed from a built-in name
to an alias for the GHC.Types.List constructor. badOrigBinding assumes that if
a name is not built-in then it must have come from TH quotation, but this is
not necessarily the case with [].
The outdated assumption in badOrigBinding leads to incorrect error messages.
This code:
data []
Fails with "Cannot redefine a Name retrieved by a Template Haskell quote: []"
Unfortunately, there is not enough information in RdrName to directly determine
if the name was constructed via TH or by the parser, so this patch changes the
error message instead.
It unifies TcRnIllegalBindingOfBuiltIn and TcRnNameByTemplateHaskellQuote
into a new error TcRnBindingOfExistingName and changes its wording to avoid
guessing the origin of the name.
- - - - -
545bf8cf by Matthew Pickering at 2023-01-27T14:58:53+00:00
Revert "base: NoImplicitPrelude in Data.Void and Data.Kind"
Fixes CI errors of the form.
```
===> Command failed with error code: 1
ghc: panic! (the 'impossible' happened)
GHC version 9.7.20230127:
lookupGlobal
Failed to load interface for ‘GHC.Num.BigNat’
There are files missing in the ‘ghc-bignum’ package,
try running 'ghc-pkg check'.
Use -v (or `:set -v` in ghci) to see a list of the files searched for.
Call stack:
CallStack (from HasCallStack):
callStackDoc, called at compiler/GHC/Utils/Panic.hs:189:37 in ghc:GHC.Utils.Panic
pprPanic, called at compiler/GHC/Tc/Utils/Env.hs:154:32 in ghc:GHC.Tc.Utils.Env
CallStack (from HasCallStack):
panic, called at compiler/GHC/Utils/Error.hs:454:29 in ghc:GHC.Utils.Error
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug
```
This reverts commit d0d7ba0fb053ebe7f919a5932066fbc776301ccd.
The module now lacks a dependency on GHC.Num.BigNat which it implicitly
depends on. It is causing all CI jobs to fail so we revert without haste
whilst the patch can be fixed.
Fixes #22848
- - - - -
638277ba by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Detect family instance orphans correctly
We were treating a type-family instance as a non-orphan if there
was a type constructor on its /right-hand side/ that was local. Boo!
Utterly wrong. With this patch, we correctly check the /left-hand side/
instead!
Fixes #22717
- - - - -
46a53bb2 by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Report family instance orphans correctly
This fixes the fact that we were not reporting orphan family instances
at all. The fix here is easy, but touches a bit of code. I refactored
the code to be much more similar to the way that class instances are done:
- Add a fi_orphan field to FamInst, like the is_orphan field in ClsInst
- Make newFamInst initialise this field, just like newClsInst
- And make newFamInst report a warning for an orphan, just like newClsInst
- I moved newFamInst from GHC.Tc.Instance.Family to GHC.Tc.Utils.Instantiate,
just like newClsInst.
- I added mkLocalFamInst to FamInstEnv, just like mkLocalClsInst in InstEnv
- TcRnOrphanInstance and SuggestFixOrphanInstance are now parametrised
over class instances vs type/data family instances.
Fixes #19773
- - - - -
faa300fb by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Avoid orphans in STG
This patch removes some orphan instances in the STG namespace
by introducing the GHC.Stg.Lift.Types module, which allows various
type family instances to be moved to GHC.Stg.Syntax, avoiding orphan
instances.
- - - - -
0f25a13b by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Avoid orphans in the parser
This moves Anno instances for PatBuilder from GHC.Parser.PostProcess
to GHC.Parser.Types to avoid orphans.
- - - - -
15750d33 by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Accept an orphan declaration (sadly)
This accepts the orphan type family instance
type instance DsForeignHook = ...
in GHC.HsToCore.Types.
See Note [The Decoupling Abstract Data Hack] in GHC.Driver.Hooks
- - - - -
c9967d13 by Zubin Duggal at 2023-01-27T23:55:31-05:00
bindist configure: Fail if find not found (#22691)
- - - - -
ad8cfed4 by John Ericson at 2023-01-27T23:56:06-05:00
Put hadrian bootstrap plans through `jq`
This makes it possible to review changes with conventional diffing
tools.
- - - - -
d0ddc01b by Ben Gamari at 2023-01-27T23:56:42-05:00
testsuite: Introduce threaded2_sanity way
Incredibly, we previously did not have a single way which would test the
threaded RTS with multiple capabilities and the sanity-checker enabled.
- - - - -
38ad8351 by Ben Gamari at 2023-01-27T23:56:42-05:00
rts: Relax Messages assertion
`doneWithMsgThrowTo` was previously too strict in asserting that the
`Message` is locked. Specifically, it failed to consider that the
`Message` may not be locked if we are deleting all threads during RTS
shutdown.
- - - - -
a9fe81af by Ben Gamari at 2023-01-27T23:56:42-05:00
testsuite: Fix race in UnliftedTVar2
Previously UnliftedTVar2 would fail when run with multiple capabilities
(and possibly even with one capability) as it would assume that
`killThread#` would immediately kill the "increment" thread.
Also, refactor the the executable to now succeed with no output and
fails with an exit code.
- - - - -
8519af60 by Ben Gamari at 2023-01-27T23:56:42-05:00
testsuite: Make listThreads more robust
Previously it was sensitive to the labels of threads which it did not
create (e.g. the IO manager event loop threads). Fix this.
- - - - -
55a81995 by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Fix non-atomic mutation of enabled_capabilities
- - - - -
b5c75f1d by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Fix C++ compilation issues
Make the RTS compilable with a C++ compiler by inserting necessary
casts.
- - - - -
c261b62f by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Fix typo
"tracingAddCapabilities" was mis-named
- - - - -
77fdbd3f by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Drop long-dead fallback definitions for INFINITY & NAN
These are no longer necessary since we now compile as C99.
- - - - -
56c1bd98 by Ben Gamari at 2023-01-28T02:57:59-05:00
Revert "CApiFFI: add ConstPtr for encoding const-qualified pointer return types (#22043)"
This reverts commit 99aca26b652603bc62953157a48e419f737d352d.
- - - - -
b3a3534b by nineonine at 2023-01-28T02:57:59-05:00
CApiFFI: add ConstPtr for encoding const-qualified pointer return types
Previously, when using `capi` calling convention in foreign declarations,
code generator failed to handle const-cualified pointer return types.
This resulted in CC toolchain throwing `-Wincompatible-pointer-types-discards-qualifiers`
warning.
`Foreign.C.Types.ConstPtr` newtype was introduced to handle these cases -
special treatment was put in place to generate appropritetly qualified C
wrapper that no longer triggers the above mentioned warning.
Fixes #22043.
- - - - -
082b7d43 by Oleg Grenrus at 2023-01-28T02:58:38-05:00
Add Foldable1 Solo instance
- - - - -
50b1e2e8 by Andrei Borzenkov at 2023-01-28T02:59:18-05:00
Convert diagnostics in GHC.Rename.Bind to proper TcRnMessage (#20115)
I removed all occurrences of TcRnUnknownMessage in GHC.Rename.Bind
module. Instead, these TcRnMessage messages were introduced:
TcRnMultipleFixityDecls
TcRnIllegalPatternSynonymDecl
TcRnIllegalClassBiding
TcRnOrphanCompletePragma
TcRnEmptyCase
TcRnNonStdGuards
TcRnDuplicateSigDecl
TcRnMisplacedSigDecl
TcRnUnexpectedDefaultSig
TcRnBindInBootFile
TcRnDuplicateMinimalSig
- - - - -
3330b819 by Matthew Pickering at 2023-01-28T02:59:54-05:00
hadrian: Fix library-dirs, dynamic-library-dirs and static-library-dirs in inplace .conf files
Previously we were just throwing away the contents of the library-dirs
fields but really we have to do the same thing as for include-dirs,
relativise the paths into the current working directory and maintain any
extra libraries the user has specified.
Now the relevant section of the rts.conf file looks like:
```
library-dirs:
${pkgroot}/../rts/build
${pkgroot}/../../..//_build/stage1/rts/build
/nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib
/nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib
library-dirs-static:
${pkgroot}/../rts/build
${pkgroot}/../../..//_build/stage1/rts/build
/nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib
/nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib
dynamic-library-dirs:
${pkgroot}/../rts/build
${pkgroot}/../../..//_build/stage1/rts/build
/nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib
/nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib
```
Fixes #22209
- - - - -
c9ad8852 by Andrew Lelechenko at 2023-01-28T03:00:33-05:00
Document differences between Data.{Monoid,Semigroup}.{First,Last}
- - - - -
7e11c6dc by Cheng Shao at 2023-01-28T03:01:09-05:00
compiler: fix subword literal narrowing logic in the wasm NCG
This patch fixes the W8/W16 literal narrowing logic in the wasm NCG,
which used to lower it to something like i32.const -1, without
properly zeroing-out the unused higher bits. Fixes #22608.
- - - - -
6ea2aa02 by Cheng Shao at 2023-01-28T03:01:46-05:00
compiler: fix lowering of CmmBlock in the wasm NCG
The CmmBlock datacon was not handled in lower_CmmLit, since I thought
it would have been eliminated after proc-point splitting. Turns out it
still occurs in very rare occasions, and this patch is needed to fix
T9329 for wasm.
- - - - -
2b62739d by Andrew Lelechenko at 2023-01-28T17:16:11-05:00
Assorted changes to avoid Data.List.{head,tail}
- - - - -
78c07219 by Cheng Shao at 2023-01-28T17:16:48-05:00
compiler: properly handle ForeignHints in the wasm NCG
Properly handle ForeignHints of ccall arguments/return value, insert
sign extends and truncations when handling signed subwords. Fixes #22852.
- - - - -
8bed166b by Ben Gamari at 2023-01-30T05:06:26-05:00
nativeGen: Disable asm-shortcutting on Darwin
Asm-shortcutting may produce relative references to symbols defined in
other compilation units. This is not something that MachO relocations
support (see #21972). For this reason we disable the optimisation on
Darwin. We do so without a warning since this flag is enabled by `-O2`.
Another way to address this issue would be to rather implement a
PLT-relocatable jump-table strategy. However, this would only benefit
Darwin and does not seem worth the effort.
Closes #21972.
- - - - -
da468391 by Cheng Shao at 2023-01-30T05:07:03-05:00
compiler: fix data section alignment in the wasm NCG
Previously we tried to lower the alignment requirement as far as
possible, based on the section kind inferred from the CLabel. For info
tables, .p2align 1 was applied given the GC should only need the
lowest bit to tag forwarding pointers. But this would lead to
unaligned loads/stores, which has a performance penalty even if the
wasm spec permits it. Furthermore, the test suite has shown memory
corruption in a few cases when compacting gc is used.
This patch takes a more conservative approach: all data sections
except C strings align to word size.
- - - - -
08ba8720 by Andreas Klebinger at 2023-01-30T21:18:45-05:00
ghc-the-library: Retain cafs in both static in dynamic builds.
We use keepCAFsForGHCi.c to force -fkeep-cafs behaviour by using a
__attribute__((constructor)) function.
This broke for static builds where the linker discarded the object file
since it was not reverenced from any exported code. We fix this by
asserting that the flag is enabled using a function in the same module
as the constructor. Which causes the object file to be retained by the
linker, which in turn causes the constructor the be run in static builds.
This changes nothing for dynamic builds using the ghc library. But causes
static to also retain CAFs (as we expect them to).
Fixes #22417.
-------------------------
Metric Decrease:
T21839r
-------------------------
- - - - -
20598ef6 by Ryan Scott at 2023-01-30T21:19:20-05:00
Handle `type data` properly in tyThingParent_maybe
Unlike most other data constructors, data constructors declared with `type data`
are represented in `TyThing`s as `ATyCon` rather than `ADataCon`. The `ATyCon`
case in `tyThingParent_maybe` previously did not consider the possibility of
the underlying `TyCon` being a promoted data constructor, which led to the
oddities observed in #22817. This patch adds a dedicated special case in
`tyThingParent_maybe`'s `ATyCon` case for `type data` data constructors to fix
these oddities.
Fixes #22817.
- - - - -
2f145052 by Ryan Scott at 2023-01-30T21:19:56-05:00
Fix two bugs in TypeData TH reification
This patch fixes two issues in the way that `type data` declarations were
reified with Template Haskell:
* `type data` data constructors are now properly reified using `DataConI`.
This is accomplished with a special case in `reifyTyCon`. Fixes #22818.
* `type data` type constructors are now reified in `reifyTyCon` using
`TypeDataD` instead of `DataD`. Fixes #22819.
- - - - -
d0f34f25 by Simon Peyton Jones at 2023-01-30T21:20:35-05:00
Take account of loop breakers in specLookupRule
The key change is that in GHC.Core.Opt.Specialise.specLookupRule
we were using realIdUnfolding, which ignores the loop-breaker
flag. When given a loop breaker, rule matching therefore
looped infinitely -- #22802.
In fixing this I refactored a bit.
* Define GHC.Core.InScopeEnv as a data type, and use it.
(Previously it was a pair: hard to grep for.)
* Put several functions returning an IdUnfoldingFun into
GHC.Types.Id, namely
idUnfolding
alwaysActiveUnfoldingFun,
whenActiveUnfoldingFun,
noUnfoldingFun
and use them. (The are all loop-breaker aware.)
- - - - -
de963cb6 by Matthew Pickering at 2023-01-30T21:21:11-05:00
ci: Remove FreeBSD job from release pipelines
We no longer attempt to build or distribute this release
- - - - -
f26d27ec by Matthew Pickering at 2023-01-30T21:21:11-05:00
rel_eng: Add check to make sure that release jobs are downloaded by fetch-gitlab
This check makes sure that if a job is a prefixed by "release-" then the
script downloads it and understands how to map the job name to the
platform.
- - - - -
7619c0b4 by Matthew Pickering at 2023-01-30T21:21:11-05:00
rel_eng: Fix the name of the ubuntu-* jobs
These were not uploaded for alpha1
Fixes #22844
- - - - -
68eb8877 by Matthew Pickering at 2023-01-30T21:21:11-05:00
gen_ci: Only consider release jobs for job metadata
In particular we do not have a release job for FreeBSD so the generation
of the platform mapping was failing.
- - - - -
b69461a0 by Jason Shipman at 2023-01-30T21:21:50-05:00
User's guide: Clarify overlapping instance candidate elimination
This commit updates the user's guide section on overlapping instance candidate
elimination to use "or" verbiage instead of "either/or" in regards to the
current pair of candidates' being overlappable or overlapping. "Either IX is
overlappable, or IY is overlapping" can cause confusion as it suggests "Either
IX is overlappable, or IY is overlapping, but not both".
This was initially discussed on this Discourse topic:
https://discourse.haskell.org/t/clarification-on-overlapping-instance-candi…
- - - - -
7cbdaad0 by Matthew Pickering at 2023-01-31T07:53:53-05:00
Fixes for cabal-reinstall CI job
* Allow filepath to be reinstalled
* Bump some version bounds to allow newer versions of libraries
* Rework testing logic to avoid "install --lib" and package env files
Fixes #22344
- - - - -
fd8f32bf by Cheng Shao at 2023-01-31T07:54:29-05:00
rts: prevent potential divide-by-zero when tickInterval=0
This patch fixes a few places in RtsFlags.c that may result in
divide-by-zero error when tickInterval=0, which is the default on
wasm. Fixes #22603.
- - - - -
085a6db6 by Joachim Breitner at 2023-01-31T07:55:05-05:00
Update note at beginning of GHC.Builtin.NAmes
some things have been renamed since it was written, it seems.
- - - - -
7716cbe6 by Cheng Shao at 2023-01-31T07:55:41-05:00
testsuite: use tgamma for cg007
gamma is a glibc-only deprecated function, use tgamma instead. It's
required for fixing cg007 when testing the wasm unregisterised
codegen.
- - - - -
19c1fbcd by doyougnu at 2023-01-31T13:08:03-05:00
InfoTableProv: ShortText --> ShortByteString
- - - - -
765fab98 by doyougnu at 2023-01-31T13:08:03-05:00
FastString: add fastStringToShorText
- - - - -
a83c810d by Simon Peyton Jones at 2023-01-31T13:08:38-05:00
Improve exprOkForSpeculation for classops
This patch fixes #22745 and #15205, which are about GHC's
failure to discard unnecessary superclass selections that
yield coercions. See
GHC.Core.Utils Note [exprOkForSpeculation and type classes]
The main changes are:
* Write new Note [NON-BOTTOM_DICTS invariant] in GHC.Core, and
refer to it
* Define new function isTerminatingType, to identify those
guaranteed-terminating dictionary types.
* exprOkForSpeculation has a new (very simple) case for ClassOpId
* ClassOpId has a new field that says if the return type is
an unlifted type, or a terminating type.
This was surprisingly tricky to get right. In particular note
that unlifted types are not terminating types; you can write an
expression of unlifted type, that diverges. Not so for dictionaries
(or, more precisely, for the dictionaries that GHC constructs).
Metric Decrease:
LargeRecord
- - - - -
f83374f8 by Krzysztof Gogolewski at 2023-01-31T13:09:14-05:00
Support "unusable UNPACK pragma" warning with -O0
Fixes #11270
- - - - -
a2d814dc by Ben Gamari at 2023-01-31T13:09:50-05:00
configure: Always create the VERSION file
Teach the `configure` script to create the `VERSION` file.
This will serve as the stable interface to allow the user to determine
the version number of a working tree.
Fixes #22322.
- - - - -
5618fc21 by sheaf at 2023-01-31T15:51:06-05:00
Cmm: track the type of global registers
This patch tracks the type of Cmm global registers. This is needed
in order to lint uses of polymorphic registers, such as SIMD vector
registers that can be used both for floating-point and integer values.
This changes allows us to refactor VanillaReg to not store VGcPtr,
as that information is instead stored in the type of the usage of the
register.
Fixes #22297
- - - - -
78b99430 by sheaf at 2023-01-31T15:51:06-05:00
Revert "Cmm Lint: relax SIMD register assignment check"
This reverts commit 3be48877, which weakened a Cmm Lint check involving
SIMD vectors. Now that we keep track of the type a global register is
used at, we can restore the original stronger check.
- - - - -
be417a47 by Ben Gamari at 2023-01-31T15:51:45-05:00
nativeGen/AArch64: Fix debugging output
Previously various panics would rely on a half-written Show
instance, leading to very unhelpful errors. Fix this.
See #22798.
- - - - -
30989d13 by Ben Gamari at 2023-01-31T15:51:45-05:00
nativeGen: Teach graph-colouring allocator that x18 is unusable
Previously trivColourable for AArch64 claimed that at 18 registers were
trivially-colourable. This is incorrect as x18 is reserved by the platform on
AArch64/Darwin.
See #22798.
- - - - -
7566fd9d by Ben Gamari at 2023-01-31T15:51:45-05:00
nativeGen/AArch64: Fix graph-colouring allocator
Previously various `Instr` queries used by the graph-colouring allocator
failed to handle a few pseudo-instructions. This manifested in compiler
panicks while compiling `SHA`, which uses `-fregs-graph`.
Fixes #22798.
- - - - -
2cb500a5 by Ben Gamari at 2023-01-31T15:51:45-05:00
testsuite: Add regression test for #22798
- - - - -
03d693b2 by Ben Gamari at 2023-01-31T15:52:32-05:00
Revert "Hadrian: fix doc generation"
This is too large of a hammer.
This reverts commit 5640cb1d84d3cce4ce0a9e90d29b2b20d2b38c2f.
- - - - -
f838815c by Ben Gamari at 2023-01-31T15:52:32-05:00
hadrian: Sphinx docs require templated cabal files
The package-version discovery logic in
`doc/users_guide/package_versions.py` uses packages' cabal files to
determine package versions. Teach Sphinx about these dependencies in
cases where the cabal files are generated by templates.
- - - - -
2e48c19a by Ben Gamari at 2023-01-31T15:52:32-05:00
hadrian: Refactor templating logic
This refactors Hadrian's autoconf-style templating logic to be explicit
about which interpolation variables should be substituted in which
files. This clears the way to fix #22714 without incurring rule cycles.
- - - - -
93f0e3c4 by Ben Gamari at 2023-01-31T15:52:33-05:00
hadrian: Substitute LIBRARY_*_VERSION variables
This teaches Hadrian to substitute the `LIBRARY_*_VERSION` variables
in `libraries/prologue.txt`, fixing #22714.
Fixes #22714.
- - - - -
22089f69 by Ben Gamari at 2023-01-31T20:46:27-05:00
Bump transformers submodule to 0.6.0.6
Fixes #22862.
- - - - -
f0eefa3c by Cheng Shao at 2023-01-31T20:47:03-05:00
compiler: properly handle non-word-sized CmmSwitch scrutinees in the wasm NCG
Currently, the wasm NCG has an implicit assumption: all CmmSwitch
scrutinees are 32-bit integers. This is not always true; #22864 is one
counter-example with a 64-bit scrutinee. This patch fixes the logic by
explicitly converting the scrutinee to a word that can be used as a
br_table operand. Fixes #22871. Also includes a regression test.
- - - - -
9f95db54 by Simon Peyton Jones at 2023-02-01T08:55:08+00:00
Improve treatment of type applications in patterns
This patch fixes a subtle bug in the typechecking of type
applications in patterns, e.g.
f (MkT @Int @a x y) = ...
See Note [Type applications in patterns] in GHC.Tc.Gen.Pat.
This fixes #19847, #22383, #19577, #21501
- - - - -
955a99ea by Simon Peyton Jones at 2023-02-01T12:31:23-05:00
Treat existentials correctly in dubiousDataConInstArgTys
Consider (#22849)
data T a where
MkT :: forall k (t::k->*) (ix::k). t ix -> T @k a
Then dubiousDataConInstArgTys MkT [Type, Foo] should return
[Foo (ix::Type)]
NOT [Foo (ix::k)]
A bit of an obscure case, but it's an outright bug, and the fix is easy.
- - - - -
0cc16aaf by Matthew Pickering at 2023-02-01T12:31:58-05:00
Bump supported LLVM range from 10 through 15 to 11 through 16
LLVM 15 turns on the new pass manager by default, which we have yet to
migrate to so for new we pass the `-enable-new-pm-0` flag in our
llvm-passes flag.
LLVM 11 was the first version to support the `-enable-new-pm` flag so we
bump the lowest supported version to 11.
Our CI jobs are using LLVM 12 so they should continue to work despite
this bump to the lower bound.
Fixes #21936
- - - - -
f94f1450 by Matthew Pickering at 2023-02-01T12:31:58-05:00
Bump DOCKER_REV to use alpine image without LLVM installed
alpine_3_12 only supports LLVM 10, which is now outside the supported
version range.
- - - - -
083e26ed by Matthew Pickering at 2023-02-01T17:43:21-05:00
Remove tracing OPTIONS_GHC
These were accidentally left over from !9542
- - - - -
354aa47d by Teo Camarasu at 2023-02-01T17:44:00-05:00
doc: fix gcdetails_block_fragmentation_bytes since annotation
- - - - -
61ce5bf6 by Jaro Reinders at 2023-02-02T00:15:30-05:00
compiler: Implement higher order patterns in the rule matcher
This implements proposal 555 and closes ticket #22465.
See the proposal and ticket for motivation.
The core changes of this patch are in the GHC.Core.Rules.match function
and they are explained in the Note [Matching higher order patterns].
- - - - -
394b91ce by doyougnu at 2023-02-02T00:16:10-05:00
CI: JavaScript backend runs testsuite
This MR runs the testsuite for the JS backend. Note that this is a
temporary solution until !9515 is merged.
Key point: The CI runs hadrian on the built cross compiler _but not_ on
the bindist.
Other Highlights:
- stm submodule gets a bump to mark tests as broken
- several tests are marked as broken or are fixed by adding more
- conditions to their test runner instance.
List of working commit messages:
CI: test cross target _and_ emulator
CI: JS: Try run testsuite with hadrian
JS.CI: cleanup and simplify hadrian invocation
use single bracket, print info
JS CI: remove call to test_compiler from hadrian
don't build haddock
JS: mark more tests as broken
Tracked in https://gitlab.haskell.org/ghc/ghc/-/issues/22576
JS testsuite: don't skip sum_mod test
Its expected to fail, yet we skipped it which automatically makes it
succeed leading to an unexpected success,
JS testsuite: don't mark T12035j as skip
leads to an unexpected pass
JS testsuite: remove broken on T14075
leads to unexpected pass
JS testsuite: mark more tests as broken
JS testsuite: mark T11760 in base as broken
JS testsuite: mark ManyUnbSums broken
submodules: bump process and hpc for JS tests
Both submodules has needed tests skipped or marked broken for th JS
backend. This commit now adds these changes to GHC.
See:
HPC: https://gitlab.haskell.org/hpc/hpc/-/merge_requests/21
Process: https://github.com/haskell/process/pull/268
remove js_broken on now passing tests
separate wasm and js backend ci
test: T11760: add threaded, non-moving only_ways
test: T10296a add req_c
T13894: skip for JS backend
tests: jspace, T22333: mark as js_broken(22573)
test: T22513i mark as req_th
stm submodule: mark stm055, T16707 broken for JS
tests: js_broken(22374) on unpack_sums_6, T12010
dont run diff on JS CI, cleanup
fixup: More CI cleanup
fix: align text to master
fix: align exceptions submodule to master
CI: Bump DOCKER_REV
Bump to ci-images commit that has a deb11 build with node. Required for
!9552
testsuite: mark T22669 as js_skip
See #22669
This test tests that .o-boot files aren't created when run in using the
interpreter backend. Thus this is not relevant for the JS backend.
testsuite: mark T22671 as broken on JS
See #22835
base.testsuite: mark Chan002 fragile for JS
see #22836
revert: submodule process bump
bump stm submodule
New hash includes skips for the JS backend.
testsuite: mark RnPatternSynonymFail broken on JS
Requires TH:
- see !9779
- and #22261
compiler: GHC.hs ifdef import Utils.Panic.Plain
- - - - -
1ffe770c by Cheng Shao at 2023-02-02T09:40:38+00:00
docs: 9.6 release notes for wasm backend
- - - - -
0ada4547 by Matthew Pickering at 2023-02-02T11:39:44-05:00
Disable unfolding sharing for interface files with core definitions
Ticket #22807 pointed out that the RHS sharing was not compatible with
-fignore-interface-pragmas because the flag would remove unfoldings from
identifiers before the `extra-decls` field was populated.
For the 9.6 timescale the only solution is to disable this sharing,
which will make interface files bigger but this is acceptable for the
first release of `-fwrite-if-simplified-core`.
For 9.8 it would be good to fix this by implementing #20056 due to the
large number of other bugs that would fix.
I also improved the error message in tc_iface_binding to avoid the "no match
in record selector" error but it should never happen now as the entire
sharing logic is disabled.
Also added the currently broken test for #22807 which could be fixed by
!6080
Fixes #22807
- - - - -
7e2d3eb5 by lrzlin at 2023-02-03T05:23:27-05:00
Enable tables next to code for LoongArch64
- - - - -
2931712a by Wander Hillen at 2023-02-03T05:24:06-05:00
Move pthread and timerfd ticker implementations to separate files
- - - - -
41c4baf8 by Ben Gamari at 2023-02-03T05:24:44-05:00
base: Fix Note references in GHC.IO.Handle.Types
- - - - -
31358198 by Andrew Lelechenko at 2023-02-03T05:25:22-05:00
Bump submodule containers to 0.6.7
Metric Decrease:
ManyConstructors
T10421
T12425
T12707
T13035
T13379
T15164
T1969
T783
T9198
T9961
WWRec
- - - - -
8feb9301 by Ben Gamari at 2023-02-03T05:25:59-05:00
gitlab-ci: Eliminate redundant ghc --info output
Previously ci.sh would emit the output of `ghc --info` every time it ran
when using the nix toolchain. This produced a significant amount of
noise.
See #22861.
- - - - -
de1d1512 by Ryan Scott at 2023-02-03T14:07:30-05:00
Windows: Remove mingwex dependency
The clang based toolchain uses ucrt as its math library
and so mingwex is no longer needed. In fact using mingwex
will cause incompatibilities as the default routines in both
have differing ULPs and string formatting modifiers.
```
$ LIBRARY_PATH=/mingw64/lib ghc/_build/stage1/bin/ghc Bug.hs -fforce-recomp && ./Bug.exe
[1 of 2] Compiling Main ( Bug.hs, Bug.o )
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `__imp___p__environ'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `__hscore_get_errno'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_ForeignziCziError_errnoToIOError_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziWindows_failIf2_closure'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncodingziCodePageziAPI_mkCodePageEncoding_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncodingziCodePage_currentCodePage_closure'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncoding_getForeignEncoding_closure'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_ForeignziCziString_withCStringLen1_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziHandleziInternals_zdwflushCharReadBuffer_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziHandleziText_hGetBuf1_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziFingerprint_fingerprintString_closure'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_DataziTypeableziInternal_mkTrCon_closure'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziException_errorCallWithCallStackException_closure'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziErr_error_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\template-haskell-2.19.0.0\libHStemplate-haskell-2.19.0.0.a: unknown symbol `base_DataziMaybe_fromJust1_info'
ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\template-haskell-2.19.0.0\libHStemplate-haskell-2.19.0.0.a: unknown symbol `templatezmhaskell_LanguageziHaskellziTHziSyntax_IntPrimL_con_info'
ghc.exe: ^^ Could not load 'templatezmhaskell_LanguageziHaskellziTHziLibziInternal_stringL_closure', dependency unresolved. See top entry above.
<no location info>: error:
GHC.ByteCode.Linker.lookupCE
During interactive linking, GHCi couldn't find the following symbol:
templatezmhaskell_LanguageziHaskellziTHziLibziInternal_stringL_closure
This may be due to you not asking GHCi to load extra object files,
archives or DLLs needed by your current session. Restart GHCi, specifying
the missing library using the -L/path/to/object/dir and -lmissinglibname
flags, or simply by naming the relevant files on the GHCi command line.
Alternatively, this link failure might indicate a bug in GHCi.
If you suspect the latter, please report this as a GHC bug:
https://www.haskell.org/ghc/reportabug
```
- - - - -
48e39195 by Tamar Christina at 2023-02-03T14:07:30-05:00
linker: Fix BFD import libraries
This commit fixes the BFD style import library support in the runtime
linker. This was accidentally broken during the refactoring to clang
and went unnoticed because clang itself is unable to generate the BFD
style import libraries.
With this change we can not link against both GCC or Clang produced
libraries again and intermix code produced by both compilers.
- - - - -
b2bb3e62 by Ben Gamari at 2023-02-03T14:07:30-05:00
Bump Windows toolchain
Updates to LLVM 14, hopefully fixing #21964.
- - - - -
bf3f88a1 by Andreas Klebinger at 2023-02-03T14:08:07-05:00
Fix CallerCC potentially shadowing other cost centres.
Add a CallerCC cost centre flavour for cost centres added by the
CallerCC pass. This avoids potential accidental shadowing between
CCs added by user annotations and ones added by CallerCC.
- - - - -
faea4bcd by j at 2023-02-03T14:08:47-05:00
Disable several ignore-warning flags in genapply.
- - - - -
25537dfd by Ben Gamari at 2023-02-04T04:12:57-05:00
Revert "Use fix-sized bit-fiddling primops for fixed size boxed types"
This reverts commit 4512ad2d6a8e65ea43c86c816411cb13b822f674.
This was never applied to master/9.6 originally.
(cherry picked from commit a44bdc2720015c03d57f470b759ece7fab29a57a)
- - - - -
7612dc71 by Krzysztof Gogolewski at 2023-02-04T04:13:34-05:00
Minor refactor
* Introduce refactorDupsOn f = refactorDups (comparing f)
* Make mkBigTupleCase and coreCaseTuple monadic.
Every call to those functions was preceded by calling newUniqueSupply.
* Use mkUserLocalOrCoVar, which is equivalent to combining
mkLocalIdOrCoVar with mkInternalName.
- - - - -
5a54ac0b by Andrew Lelechenko at 2023-02-04T18:48:32-05:00
Fix colors in emacs terminal
- - - - -
3c0f0c6d by Andrew Lelechenko at 2023-02-04T18:49:11-05:00
base changelog: move entries which were not backported to ghc-9.6 to base-4.19 section
- - - - -
b18fbf52 by Josh Meredith at 2023-02-06T07:47:57+00:00
Update JavaScript fileStat to match Emscripten layout
- - - - -
6636b670 by Sylvain Henry at 2023-02-06T09:43:21-05:00
JS: replace "js" architecture with "javascript"
Despite Cabal supporting any architecture name, `cabal --check` only
supports a few built-in ones. Sadly `cabal --check` is used by Hackage
hence using any non built-in name in a package (e.g. `arch(js)`) is
rejected and the package is prevented from being uploaded on Hackage.
Luckily built-in support for the `javascript` architecture was added for
GHCJS a while ago. In order to allow newer `base` to be uploaded on
Hackage we make the switch from `js` to `javascript` architecture.
Fixes #22740.
Co-authored-by: Ben Gamari <ben(a)smart-cactus.org>
- - - - -
77a8234c by Luite Stegeman at 2023-02-06T09:43:59-05:00
Fix marking async exceptions in the JS backend
Async exceptions are posted as a pair of the exception and
the thread object. This fixes the marking pass to correctly
follow the two elements of the pair.
Potentially fixes #22836
- - - - -
3e09cf82 by Jan Hrček at 2023-02-06T09:44:38-05:00
Remove extraneous word in Roles user guide
- - - - -
b17fb3d9 by sheaf at 2023-02-07T10:51:33-05:00
Don't allow . in overloaded labels
This patch removes . from the list of allowed characters in a non-quoted
overloaded label, as it was realised this steals syntax, e.g. (#.).
Users who want this functionality will have to add quotes around the
label, e.g. `#"17.28"`.
Fixes #22821
- - - - -
5dce04ee by romes at 2023-02-07T10:52:10-05:00
Update kinds in comments in GHC.Core.TyCon
Use `Type` instead of star kind (*)
Fix comment with incorrect kind * to have kind `Constraint`
- - - - -
92916194 by Ben Gamari at 2023-02-07T10:52:48-05:00
Revert "Use fix-sized equality primops for fixed size boxed types"
This reverts commit 024020c38126f3ce326ff56906d53525bc71690c.
This was never applied to master/9.6 originally.
See #20405 for why using these primops is a bad idea.
(cherry picked from commit b1d109ad542e4c37ae5af6ace71baf2cb509d865)
- - - - -
c1670c6b by Sylvain Henry at 2023-02-07T21:25:18-05:00
JS: avoid head/tail and unpackFS
- - - - -
a9912de7 by Krzysztof Gogolewski at 2023-02-07T21:25:53-05:00
testsuite: Fix Python warnings (#22856)
- - - - -
9ee761bf by sheaf at 2023-02-08T14:40:40-05:00
Fix tyvar scoping within class SPECIALISE pragmas
Type variables from class/instance headers scope over class/instance
method type signatures, but DO NOT scope over the type signatures in
SPECIALISE and SPECIALISE instance pragmas.
The logic in GHC.Rename.Bind.rnMethodBinds correctly accounted for
SPECIALISE inline pragmas, but forgot to apply the same treatment
to method SPECIALISE pragmas, which lead to a Core Lint failure with
an out-of-scope type variable. This patch makes sure we apply the same
logic for both cases.
Fixes #22913
- - - - -
7eac2468 by Matthew Pickering at 2023-02-08T14:41:17-05:00
Revert "Don't keep exit join points so much"
This reverts commit caced75765472a1a94453f2e5a439dba0d04a265.
It seems the patch "Don't keep exit join points so much" is causing
wide-spread regressions in the bytestring library benchmarks. If I
revert it then the 9.6 numbers are better on average than 9.4.
See https://gitlab.haskell.org/ghc/ghc/-/issues/22893#note_479525
-------------------------
Metric Decrease:
MultiComponentModules
MultiComponentModulesRecomp
MultiLayerModules
MultiLayerModulesRecomp
MultiLayerModulesTH_Make
T12150
T13386
T13719
T21839c
T3294
parsing001
-------------------------
- - - - -
633f2799 by Cheng Shao at 2023-02-08T18:42:16-05:00
testsuite: remove config.use_threads
This patch simplifies the testsuite driver by removing the use_threads
config field. It's just a degenerate case of threads=1.
- - - - -
ca6673e3 by Cheng Shao at 2023-02-08T18:42:16-05:00
testsuite: use concurrent.futures.ThreadPoolExecutor in the driver
The testsuite driver used to create one thread per test case, and
explicitly use semaphore and locks for rate limiting and
synchronization. This is a bad practice in any language, and
occasionally may result in livelock conditions (e.g. #22889). This
patch uses concurrent.futures.ThreadPoolExecutor for scheduling test
case runs, which is simpler and more robust.
- - - - -
f22cce70 by Alan Zimmerman at 2023-02-08T18:42:51-05:00
EPA: Comment between module and where should be in header comments
Do not apply the heuristic to associate a comment with a prior
declaration for the first declaration in the file.
Closes #22919
- - - - -
d69ecac2 by Josh Meredith at 2023-02-09T03:24:05-05:00
JS generated refs: update testsuite conditions
- - - - -
2ea1a6bc by sheaf at 2023-02-09T03:24:44-05:00
Bump transformers to 0.6.1.0
This allows us to avoid orphans for Foldable1 instances,
fixing #22898.
Updates transformers submodule.
- - - - -
d9d0c28d by konsumlamm at 2023-02-09T14:07:48-05:00
Update `Data.List.singleton` doc comment
- - - - -
fe9cd6ef by Ben Gamari at 2023-02-09T14:08:23-05:00
gitlab-template: Emphasize `user facing` label
My sense is that the current mention of the ~"user facing" label is
overlooked by many MR authors.
Let's move this point up in the list to make it more likely that it is
seen. Also rephrase some of the points.
- - - - -
e45eb828 by Simon Peyton Jones at 2023-02-10T06:51:28-05:00
Refactor the simplifier a bit to fix #22761
The core change in this commit, which fixes #22761, is that
* In a Core rule, ru_rhs is always occ-analysed.
This means adding a couple of calls to occurAnalyseExpr when
building a Rule, in
* GHC.Core.Rules.mkRule
* GHC.Core.Opt.Simplify.Iteration.simplRules
But diagosing the bug made me stare carefully at the code of the
Simplifier, and I ended up doing some only-loosely-related refactoring.
* I think that RULES could be lost because not every code path
did addBndrRules
* The code around lambdas was very convoluted
It's mainly moving deck chairs around, but I like it more now.
- - - - -
11e0cacb by Rebecca Turner at 2023-02-10T06:52:09-05:00
Detect the `mold` linker
Enables support for the `mold` linker by rui314.
- - - - -
59556235 by parsonsmatt at 2023-02-10T09:53:11-05:00
Add Lift instance for Fixed
- - - - -
c44e5f30 by Sylvain Henry at 2023-02-10T09:53:51-05:00
Testsuite: decrease length001 timeout for JS (#22921)
- - - - -
133516af by Zubin Duggal at 2023-02-10T09:54:27-05:00
compiler: Use NamedFieldPuns for `ModIface_` and `ModIfaceBackend` `NFData`
instances
This is a minor refactor that makes it easy to add and remove fields from
`ModIface_` and `ModIfaceBackend`.
Also change the formatting to make it clear exactly which fields are
fully forced with `rnf`
- - - - -
1e9eac1c by Matthew Pickering at 2023-02-13T11:36:41+01:00
Refresh profiling docs
I went through the whole of the profiling docs and tried to amend them
to reflect current best practices and tooling. In particular I removed
some old references to tools such as hp2any and replaced them with
references to eventlog2html.
- - - - -
da208b9a by Matthew Pickering at 2023-02-13T11:36:41+01:00
docs: Add section about profiling and foreign calls
Previously there was no documentation for how foreign calls interacted
with the profiler. This can be quite confusing for users so getting it
into the user guide is the first step to a potentially better solution.
See the ticket for more insightful discussion.
Fixes #21764
- - - - -
081640f1 by Andrew Lelechenko at 2023-02-13T12:51:52-05:00
Document that -fproc-alignment was introduced only in GHC 8.6
- - - - -
16adc349 by Sven Tennie at 2023-02-14T11:26:31-05:00
Add clangd flag to include generated header files
This enables clangd to correctly check C files that import Rts.h.
(The added include directory contains ghcautoconf.h et. al.)
- - - - -
c399ccd9 by amesgen at 2023-02-14T11:27:14-05:00
Mention new `Foreign.Marshal.Pool` implementation in User's Guide
- - - - -
b9282cf7 by Ben Gamari at 2023-02-14T11:27:50-05:00
upload_ghc_libs: More control over which packages to operate on
Here we add a `--skip` flag to `upload_ghc_libs`, making it easier to
limit which packages to upload. This is often necessary when one package
is not uploadable (e.g. see #22740).
- - - - -
aa3a262d by PHO at 2023-02-14T11:28:29-05:00
Assume platforms support rpaths if they use either ELF or Mach-O
Not only Linux, Darwin, and FreeBSD support rpaths. Determine the usability
of rpaths based on the object format, not on OS.
- - - - -
47716024 by PHO at 2023-02-14T11:29:09-05:00
RTS linker: Improve compatibility with NetBSD
1. Hint address to NetBSD mmap(2) has a different semantics from that of
Linux. When a hint address is provided, mmap(2) searches for a free
region at or below the hint but *never* above it. This means we can't
reliably search for free regions incrementally on the userland,
especially when ASLR is enabled. Let the kernel do it for us if we don't
care where the mapped address is going to be.
2. NetBSD not only hates to map pages as rwx, but also disallows to switch
pages from rw- to r-x unless the intention is declared when pages are
initially requested. This means we need a new MemoryAccess mode for
pages that are going to be changed to r-x.
- - - - -
11de324a by Li-yao Xia at 2023-02-14T11:29:49-05:00
base: Move changelog entry to its place
- - - - -
75930424 by Ben Gamari at 2023-02-14T11:30:27-05:00
nativeGen/AArch64: Emit Atomic{Read,Write} inline
Previously the AtomicRead and AtomicWrite operations were emitted as
out-of-line calls. However, these tend to be very important for
performance, especially the RELAXED case (which only exists for
ThreadSanitizer checking).
Fixes #22115.
- - - - -
d6411d6c by Andreas Klebinger at 2023-02-14T11:31:04-05:00
Fix some correctness issues around tag inference when targeting the bytecode generator.
* Let binders are now always assumed untagged for bytecode.
* Imported referenced are now always assumed to be untagged for bytecode.
Fixes #22840
- - - - -
9fb4ca89 by sheaf at 2023-02-14T11:31:49-05:00
Introduce warning for loopy superclass solve
Commit aed1974e completely re-engineered the treatment of loopy
superclass dictionaries in instance declarations. Unfortunately,
it has the potential to break (albeit in a rather minor way) user code.
To alleviate migration concerns, this commit re-introduces the old
behaviour. Any reliance on this old behaviour triggers a warning,
controlled by `-Wloopy-superclass-solve`. The warning text explains
that GHC might produce bottoming evidence, and provides a migration
strategy.
This allows us to provide a graceful migration period, alerting users
when they are relying on this unsound behaviour.
Fixes #22912 #22891 #20666 #22894 #22905
- - - - -
1928c7f3 by Cheng Shao at 2023-02-14T11:32:26-05:00
rts: make it possible to change mblock size on 32-bit targets
The MBLOCK_SHIFT macro must be the single source of truth for defining
the mblock size, and changing it should only affect performance, not
correctness. This patch makes it truly possible to reconfigure mblock
size, at least on 32-bit targets, by fixing places which implicitly
relied on the previous MBLOCK_SHIFT constant. Fixes #22901.
- - - - -
78aa3b39 by Simon Hengel at 2023-02-14T11:33:06-05:00
Update outdated references to notes
- - - - -
e8baecd2 by meooow25 at 2023-02-14T11:33:49-05:00
Documentation: Improve Foldable1 documentation
* Explain foldrMap1, foldlMap1, foldlMap1', and foldrMap1' in greater
detail, the text is mostly adapted from documentation of Foldable.
* Describe foldr1, foldl1, foldl1' and foldr1' in terms of the above
functions instead of redoing the full explanation.
* Small updates to documentation of fold1, foldMap1 and toNonEmpty,
again adapting from Foldable.
* Update the foldMap1 example to lists instead of Sum since this is
recommended for lazy right-associative folds.
Fixes #22847
- - - - -
85a1a575 by romes at 2023-02-14T11:34:25-05:00
fix: Mark ghci Prelude import as implicit
Fixes #22829
In GHCi, we were creating an import declaration for Prelude but we were
not setting it as an implicit declaration. Therefore, ghci's import of
Prelude triggered -Wmissing-import-lists.
Adds regression test T22829 to testsuite
- - - - -
3b019a7a by Cheng Shao at 2023-02-14T11:35:03-05:00
compiler: fix generateCgIPEStub for no-tables-next-to-code builds
generateCgIPEStub already correctly implements the CmmTick finding
logic for when tables-next-to-code is on/off, but it used the wrong
predicate to decide when to switch between the two. Previously it
switches based on whether the codegen is unregisterised, but there do
exist registerised builds that disable tables-next-to-code! This patch
corrects that problem. Fixes #22896.
- - - - -
08c0822c by doyougnu at 2023-02-15T00:16:39-05:00
docs: release notes, user guide: add js backend
Follow up from #21078
- - - - -
79d8fd65 by Bryan Richter at 2023-02-15T00:17:15-05:00
Allow failure in nightly-x86_64-linux-deb10-no_tntc-validate
See #22343
- - - - -
9ca51f9e by Cheng Shao at 2023-02-15T00:17:53-05:00
rts: add the rts_clearMemory function
This patch adds the rts_clearMemory function that does its best to
zero out unused RTS memory for a wasm backend use case. See the
comment above rts_clearMemory() prototype declaration for more
detailed explanation. Closes #22920.
- - - - -
26df73fb by Oleg Grenrus at 2023-02-15T22:20:57-05:00
Add -single-threaded flag to force single threaded rts
This is the small part of implementing
https://github.com/ghc-proposals/ghc-proposals/pull/240
- - - - -
631c6c72 by Cheng Shao at 2023-02-16T06:43:09-05:00
docs: add a section for the wasm backend
Fixes #22658
- - - - -
1878e0bd by Bryan Richter at 2023-02-16T06:43:47-05:00
tests: Mark T12903 fragile everywhere
See #21184
- - - - -
b9420eac by Bryan Richter at 2023-02-16T06:43:47-05:00
Mark all T5435 variants as fragile
See #22970.
- - - - -
df3d94bd by Sylvain Henry at 2023-02-16T06:44:33-05:00
Testsuite: mark T13167 as fragile for JS (#22921)
- - - - -
324e925b by Sylvain Henry at 2023-02-16T06:45:15-05:00
JS: disable debugging info for heap objects
- - - - -
518af814 by Josh Meredith at 2023-02-16T10:16:32-05:00
Factor JS Rts generation for h$c{_,0,1,2} into h$c{n} and improve name caching
- - - - -
34cd308e by Ben Gamari at 2023-02-16T10:17:08-05:00
base: Note move of GHC.Stack.CCS.whereFrom to GHC.InfoProv in changelog
Fixes #22883.
- - - - -
12965aba by Simon Peyton Jones at 2023-02-16T10:17:46-05:00
Narrow the dont-decompose-newtype test
Following #22924 this patch narrows the test that stops
us decomposing newtypes. The key change is the use of
noGivenNewtypeReprEqs in GHC.Tc.Solver.Canonical.canTyConApp.
We went to and fro on the solution, as you can see in #22924.
The result is carefully documented in
Note [Decomoposing newtype equalities]
On the way I had revert most of
commit 3e827c3f74ef76d90d79ab6c4e71aa954a1a6b90
Author: Richard Eisenberg <rae(a)cs.brynmawr.edu>
Date: Mon Dec 5 10:14:02 2022 -0500
Do newtype unwrapping in the canonicaliser and rewriter
See Note [Unwrap newtypes first], which has the details.
It turns out that
(a) 3e827c3f makes GHC behave worse on some recursive newtypes
(see one of the tests on this commit)
(b) the finer-grained test (namely noGivenNewtypeReprEqs) renders
3e827c3f unnecessary
- - - - -
5b038888 by Andrew Lelechenko at 2023-02-16T10:18:24-05:00
Documentation: add an example of SPEC usage
- - - - -
681e0e8c by sheaf at 2023-02-16T14:09:56-05:00
No default finalizer exception handler
Commit cfc8e2e2 introduced a mechanism for handling of exceptions
that occur during Handle finalization, and 372cf730 set the default
handler to print out the error to stderr.
However, #21680 pointed out we might not want to set this by default,
as it might pollute users' terminals with unwanted information.
So, for the time being, the default handler discards the exception.
Fixes #21680
- - - - -
b3ac17ad by Matthew Pickering at 2023-02-16T14:10:31-05:00
unicode: Don't inline bitmap in generalCategory
generalCategory contains a huge literal string but is marked INLINE,
this will duplicate the string into any use site of generalCategory. In
particular generalCategory is used in functions like isSpace and the
literal gets inlined into this function which makes it massive.
https://github.com/haskell/core-libraries-committee/issues/130
Fixes #22949
-------------------------
Metric Decrease:
T4029
T18304
-------------------------
- - - - -
8988eeef by sheaf at 2023-02-16T20:32:27-05:00
Expand synonyms in RoughMap
We were failing to expand type synonyms in the function
GHC.Core.RoughMap.typeToRoughMatchLookupTc, even though the
RoughMap infrastructure crucially relies on type synonym expansion
to work.
This patch adds the missing type-synonym expansion.
Fixes #22985
- - - - -
3dd50e2f by Matthew Pickering at 2023-02-16T20:33:03-05:00
ghcup-metadata: Add test artifact
Add the released testsuite tarball to the generated ghcup metadata.
- - - - -
c6a967d9 by Matthew Pickering at 2023-02-16T20:33:03-05:00
ghcup-metadata: Use Ubuntu and Rocky bindists
Prefer to use the Ubuntu 20.04 and 18.04 binary distributions on Ubuntu
and Linux Mint. Prefer to use the Rocky 8 binary distribution on
unknown distributions.
- - - - -
be0b7209 by Matthew Pickering at 2023-02-17T09:37:16+00:00
Add INLINABLE pragmas to `generic*` functions in Data.OldList
These functions are
* recursive
* overloaded
So it's important to add an `INLINABLE` pragma to each so that they can be
specialised at the use site when the specific numeric type is known.
Adding these pragmas improves the LazyText replicate benchmark (see https://gitlab.haskell.org/ghc/ghc/-/issues/22886#note_481020)
https://github.com/haskell/core-libraries-committee/issues/129
- - - - -
a203ad85 by Sylvain Henry at 2023-02-17T15:59:16-05:00
Merge libiserv with ghci
`libiserv` serves no purpose. As it depends on `ghci` and doesn't have
more dependencies than the `ghci` package, its code could live in the
`ghci` package too.
This commit also moves most of the code from the `iserv` program into
the `ghci` package as well so that it can be reused. This is especially
useful for the implementation of TH for the JS backend (#22261, !9779).
- - - - -
7080a93f by Simon Peyton Jones at 2023-02-20T12:06:32+01:00
Improve GHC.Tc.Gen.App.tcInstFun
It wasn't behaving right when inst_final=False, and the
function had no type variables
f :: Foo => Int
Rather a corner case, but we might as well do it right.
Fixes #22908
Unexpectedly, three test cases (all using :type in GHCi) got
slightly better output as a result:
T17403, T14796, T12447
- - - - -
2592ab69 by Cheng Shao at 2023-02-20T10:35:30-05:00
compiler: fix cost centre profiling breakage in wasm NCG due to incorrect register mapping
The wasm NCG used to map CCCS to a wasm global, based on the
observation that CCCS is a transient register that's already handled
by thread state load/store logic, so it doesn't need to be backed by
the rCCCS field in the register table.
Unfortunately, this is wrong, since even when Cmm execution hasn't
yielded back to the scheduler, the Cmm code may call enterFunCCS,
which does use rCCCS.
This breaks cost centre profiling in a subtle way, resulting in
inaccurate stack traces in some test cases. The fix is simple though:
just remove the CCCS mapping.
- - - - -
26243de1 by Alexis King at 2023-02-20T15:27:17-05:00
Handle top-level Addr# literals in the bytecode compiler
Fixes #22376.
- - - - -
0196cc2b by romes at 2023-02-20T15:27:52-05:00
fix: Explicitly flush stdout on plugin
Because of #20791, the plugins tests often fail. This is a temporary
fix to stop the tests from failing due to unflushed outputs on windows
and the explicit flush should be removed when #20791 is fixed.
- - - - -
4327d635 by Ryan Scott at 2023-02-20T20:44:34-05:00
Don't generate datacon wrappers for `type data` declarations
Data constructor wrappers only make sense for _value_-level data constructors,
but data constructors for `type data` declarations only exist at the _type_
level. This patch does the following:
* The criteria in `GHC.Types.Id.Make.mkDataConRep` for whether a data
constructor receives a wrapper now consider whether or not its parent data
type was declared with `type data`, omitting a wrapper if this is the case.
* Now that `type data` data constructors no longer receive wrappers, there is a
spot of code in `refineDefaultAlt` that panics when it encounters a value
headed by a `type data` type constructor. I've fixed this with a special case
in `refineDefaultAlt` and expanded `Note [Refine DEFAULT case alternatives]`
to explain why we do this.
Fixes #22948.
- - - - -
96dc58b9 by Ryan Scott at 2023-02-20T20:44:35-05:00
Treat type data declarations as empty when checking pattern-matching coverage
The data constructors for a `type data` declaration don't exist at the value
level, so we don't want GHC to warn users to match on them.
Fixes #22964.
- - - - -
ff8e99f6 by Ryan Scott at 2023-02-20T20:44:35-05:00
Disallow `tagToEnum#` on `type data` types
We don't want to allow users to conjure up values of a `type data` type using
`tagToEnum#`, as these simply don't exist at the value level.
- - - - -
8e765aff by Andrew Lelechenko at 2023-02-21T12:03:24-05:00
Bump submodule text to 2.0.2
- - - - -
172ff88f by Georgi Lyubenov at 2023-02-21T18:35:56-05:00
GHC proposal 496 - Nullary record wildcards
This patch implements GHC proposal 496, which allows record wildcards
to be used for nullary constructors, e.g.
data A = MkA1 | MkA2 { fld1 :: Int }
f :: A -> Int
f (MkA1 {..}) = 0
f (MkA2 {..}) = fld1
To achieve this, we add arity information to the record field
environment, so that we can accept a constructor which has no fields
while continuing to reject non-record constructors with more than 1
field. See Note [Nullary constructors and empty record wildcards],
as well as the more general overview in Note [Local constructor info in the renamer],
both in the newly introduced GHC.Types.ConInfo module.
Fixes #22161
- - - - -
f70a0239 by sheaf at 2023-02-21T18:36:35-05:00
ghc-prim: levity-polymorphic array equality ops
This patch changes the pointer-equality comparison operations in
GHC.Prim.PtrEq to work with arrays of unlifted values, e.g.
sameArray# :: forall {l} (a :: TYPE (BoxedRep l)). Array# a -> Array# a -> Int#
Fixes #22976
- - - - -
9296660b by Andreas Klebinger at 2023-02-21T23:58:05-05:00
base: Correct @since annotation for FP<->Integral bit cast operations.
Fixes #22708
- - - - -
f11d9c27 by romes at 2023-02-21T23:58:42-05:00
fix: Update documentation links
Closes #23008
Additionally batches some fixes to pointers to the Note [Wired-in units],
and a typo in said note.
- - - - -
fb60339f by Bryan Richter at 2023-02-23T14:45:17+02:00
Propagate failure if unable to push notes
- - - - -
8e170f86 by Alexis King at 2023-02-23T16:59:22-05:00
rts: Fix `prompt#` when profiling is enabled
This commit also adds a new -Dk RTS option to the debug RTS to assist
debugging continuation captures. Currently, the printed information is
quite minimal, but more can be added in the future if it proves to be
useful when debugging future issues.
fixes #23001
- - - - -
e9e7a00d by sheaf at 2023-02-23T17:00:01-05:00
Explicit migration timeline for loopy SC solving
This patch updates the warning message introduced in commit
9fb4ca89bff9873e5f6a6849fa22a349c94deaae to specify an explicit
migration timeline: GHC will no longer support this constraint solving
mechanism starting from GHC 9.10.
Fixes #22912
- - - - -
4eb9c234 by Sylvain Henry at 2023-02-24T17:27:45-05:00
JS: make some arithmetic primops faster (#22835)
Don't use BigInt for wordAdd2, mulWord32, and timesInt32.
Co-authored-by: Matthew Craven <5086-clyring(a)users.noreply.gitlab.haskell.org>
- - - - -
92e76483 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump terminfo submodule to 0.4.1.6
- - - - -
f229db14 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump unix submodule to 2.8.1.0
- - - - -
47bd48c1 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump deepseq submodule to 1.4.8.1
- - - - -
d2012594 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump directory submodule to 1.3.8.1
- - - - -
df6f70d1 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump process submodule to v1.6.17.0
- - - - -
4c869e48 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump hsc2hs submodule to 0.68.8
- - - - -
81d96642 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump array submodule to 0.5.4.0
- - - - -
6361f771 by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump Cabal submodule to 3.9 pre-release
- - - - -
4085fb6c by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump filepath submodule to 1.4.100.1
- - - - -
2bfad50f by Ben Gamari at 2023-02-24T17:28:20-05:00
Bump haskeline submodule to 0.8.2.1
- - - - -
fdc89a8d by Ben Gamari at 2023-02-24T21:29:32-05:00
gitlab-ci: Run nix-build with -v0
This significantly cuts down on the amount of
noise in the job log.
Addresses #22861.
- - - - -
69fb0b13 by Aaron Allen at 2023-02-24T21:30:10-05:00
Fix ParallelListComp out of scope suggestion
This patch makes it so vars from one block of a parallel list
comprehension are not in scope in a subsequent block during type
checking. This was causing GHC to emit a faulty suggestion when an out
of scope variable shared the occ name of a var from a different block.
Fixes #22940
- - - - -
ece092d0 by Simon Peyton Jones at 2023-02-24T21:30:45-05:00
Fix shadowing bug in prepareAlts
As #23012 showed, GHC.Core.Opt.Simplify.Utils.prepareAlts was
using an OutType to construct an InAlt. When shadowing is in play,
this is outright wrong.
See Note [Shadowing in prepareAlts].
- - - - -
7825fef9 by Sylvain Henry at 2023-02-24T21:31:25-05:00
JS: Store CI perf results (fix #22923)
- - - - -
b56025f4 by Gergő Érdi at 2023-02-27T13:34:22+00:00
Don't specialise incoherent instance applications
Using incoherent instances, there can be situations where two
occurrences of the same overloaded function at the same type use two
different instances (see #22448). For incoherently resolved instances,
we must mark them with `nospec` to avoid the specialiser rewriting one
to the other. This marking is done during the desugaring of the
`WpEvApp` wrapper.
Fixes #22448
Metric Increase:
T15304
- - - - -
d0c7bbed by Tom Ellis at 2023-02-27T20:04:07-05:00
Fix SCC grouping example
- - - - -
f84a8cd4 by Bryan Richter at 2023-02-28T05:58:37-05:00
Mark setnumcapabilities001 fragile
- - - - -
29a04d6e by Bryan Richter at 2023-02-28T05:58:37-05:00
Allow nightly-x86_64-linux-deb10-validate+thread_sanitizer to fail
See #22520
- - - - -
9fa54572 by Cheng Shao at 2023-02-28T05:59:15-05:00
ghc-prim: fix hs_cmpxchg64 function prototype
hs_cmpxchg64 must return a StgWord64, otherwise incorrect runtime
results of 64-bit MO_Cmpxchg will appear in 32-bit unregisterised
builds, which go unnoticed at compile-time due to C implicit casting
in .hc files.
- - - - -
0c200ab7 by Simon Peyton Jones at 2023-02-28T11:10:31-05:00
Account for local rules in specImports
As #23024 showed, in GHC.Core.Opt.Specialise.specImports, we were
generating specialisations (a locally-define function) for imported
functions; and then generating specialisations for those
locally-defined functions. The RULE for the latter should be
attached to the local Id, not put in the rules-for-imported-ids
set.
Fix is easy; similar to what happens in GHC.HsToCore.addExportFlagsAndRules
- - - - -
8b77f9bf by Sylvain Henry at 2023-02-28T11:11:21-05:00
JS: fix for overlap with copyMutableByteArray# (#23033)
The code wasn't taking into account some kind of overlap.
cgrun070 has been extended to test the missing case.
- - - - -
239202a2 by Sylvain Henry at 2023-02-28T11:12:03-05:00
Testsuite: replace some js_skip with req_cmm
req_cmm is more informative than js_skip
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7192ef91 by Simon Peyton Jones at 2023-02-28T18:54:59-05:00
Take more care with unlifted bindings in the specialiser
As #22998 showed, we were floating an unlifted binding to top
level, which breaks a Core invariant.
The fix is easy, albeit a little bit conservative. See
Note [Care with unlifted bindings] in GHC.Core.Opt.Specialise
- - - - -
bb500e2a by Simon Peyton Jones at 2023-02-28T18:55:35-05:00
Account for TYPE vs CONSTRAINT in mkSelCo
As #23018 showed, in mkRuntimeRepCo we need to account for coercions
between TYPE and COERCION.
See Note [mkRuntimeRepCo] in GHC.Core.Coercion.
- - - - -
79ffa170 by Ben Gamari at 2023-03-01T04:17:20-05:00
hadrian: Add dependency from lib/settings to mk/config.mk
In 81975ef375de07a0ea5a69596b2077d7f5959182 we attempted to fix #20253
by adding logic to the bindist Makefile to regenerate the `settings`
file from information gleaned by the bindist `configure` script.
However, this fix had no effect as `lib/settings` is shipped in the
binary distribution (to allow in-place use of the binary distribution).
As `lib/settings` already existed and its rule declared no dependencies,
`make` would fail to use the added rule to regenerate it.
Fix this by explicitly declaring a dependency from `lib/settings` on
`mk/config.mk`.
Fixes #22982.
- - - - -
a2a1a1c0 by Sebastian Graf at 2023-03-01T04:17:56-05:00
Revert the main payload of "Make `drop` and `dropWhile` fuse (#18964)"
This reverts the bits affecting fusion of `drop` and `dropWhile` of commit
0f7588b5df1fc7a58d8202761bf1501447e48914 and keeps just the small refactoring
unifying `flipSeqTake` and `flipSeqScanl'` into `flipSeq`.
It also adds a new test for #23021 (which was the reason for reverting) as
well as adds a clarifying comment to T18964.
Fixes #23021, unfixes #18964.
Metric Increase:
T18964
Metric Decrease:
T18964
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cf118e2f by Simon Peyton Jones at 2023-03-01T04:18:33-05:00
Refine the test for naughty record selectors
The test for naughtiness in record selectors is surprisingly subtle.
See the revised Note [Naughty record selectors] in GHC.Tc.TyCl.Utils.
Fixes #23038.
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86f240ca by romes at 2023-03-01T04:19:10-05:00
fix: Consider strictness annotation in rep_bind
Fixes #23036
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1ed573a5 by Richard Eisenberg at 2023-03-02T22:42:06-05:00
Don't suppress *all* Wanteds
Code in GHC.Tc.Errors.reportWanteds suppresses a Wanted if its
rewriters have unfilled coercion holes; see
Note [Wanteds rewrite Wanteds] in GHC.Tc.Types.Constraint.
But if we thereby suppress *all* errors that's really confusing,
and as #22707 shows, GHC goes on without even realising that the
program is broken. Disaster.
This MR arranges to un-suppress them all if they all get suppressed.
Close #22707
- - - - -
8919f341 by Luite Stegeman at 2023-03-02T22:42:45-05:00
Check for platform support for JavaScript foreign imports
GHC was accepting `foreign import javascript` declarations
on non-JavaScript platforms. This adds a check so that these
are only supported on an platform that supports the JavaScript
calling convention.
Fixes #22774
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db83f8bb by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Statically assert alignment of Capability
In #22965 we noticed that changes in the size of `Capability` can result
in unsound behavior due to the `align` pragma claiming an alignment
which we don't in practice observe. Avoid this by statically asserting
that the size is a multiple of the alignment.
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5f7a4a6d by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Introduce stgMallocAlignedBytes
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8a6f745d by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Correctly align Capability allocations
Previously we failed to tell the C allocator that `Capability`s needed
to be aligned, resulting in #22965.
Fixes #22965.
Fixes #22975.
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5464c73f by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Drop no-alignment special case for Windows
For reasons that aren't clear, we were previously not giving Capability
the same favorable alignment on Windows that we provided on other
platforms. Fix this.
- - - - -
a86aae8b by Matthew Pickering at 2023-03-02T22:43:59-05:00
constant folding: Correct type of decodeDouble_Int64 rule
The first argument is Int64# unconditionally, so we better produce
something of that type. This fixes a core lint error found in the ad
package.
Fixes #23019
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68dd64ff by Zubin Duggal at 2023-03-02T22:44:35-05:00
ncg/aarch64: Handle MULTILINE_COMMENT identically as COMMENTs
Commit 7566fd9de38c67360c090f828923d41587af519c with the fix for #22798 was
incomplete as it failed to handle MULTILINE_COMMENT pseudo-instructions, and
didn't completly fix the compiler panics when compiling with `-fregs-graph`.
Fixes #23002
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2f97c861 by Simon Peyton Jones at 2023-03-02T22:45:11-05:00
Get the right in-scope set in etaBodyForJoinPoint
Fixes #23026
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45af8482 by David Feuer at 2023-03-03T11:40:47-05:00
Export getSolo from Data.Tuple
Proposed in
[CLC proposal #113](https://github.com/haskell/core-libraries-committee/issues/113)
and
[approved by the CLC](https://github.com/haskell/core-libraries-committee/issues/113#issueco…
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0c694895 by David Feuer at 2023-03-03T11:40:47-05:00
Document getSolo
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bd0536af by Simon Peyton Jones at 2023-03-03T11:41:23-05:00
More fixes for `type data` declarations
This MR fixes #23022 and #23023. Specifically
* Beef up Note [Type data declarations] in GHC.Rename.Module,
to make invariant (I1) explicit, and to name the several
wrinkles.
And add references to these specific wrinkles.
* Add a Lint check for invariant (I1) above.
See GHC.Core.Lint.checkTypeDataConOcc
* Disable the `caseRules` for dataToTag# for `type data` values.
See Wrinkle (W2c) in the Note above. Fixes #23023.
* Refine the assertion in dataConRepArgTys, so that it does not
complain about the absence of a wrapper for a `type data` constructor
Fixes #23022.
Acked-by: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
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858f34d5 by Oleg Grenrus at 2023-03-04T01:13:55+02:00
Add decideSymbol, decideChar, decideNat, decTypeRep, decT and hdecT
These all type-level equality decision procedures.
Implementes a CLC proposal https://github.com/haskell/core-libraries-committee/issues/98
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bf43ba92 by Simon Peyton Jones at 2023-03-04T01:18:23-05:00
Add test for T22793
- - - - -
c6e1f3cd by Chris Wendt at 2023-03-04T03:35:18-07:00
Fix typo in docs referring to threadLabel
- - - - -
232cfc24 by Simon Peyton Jones at 2023-03-05T19:57:30-05:00
Add regression test for #22328
- - - - -
5ed77deb by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Enable response files for linker if supported
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1e0f6c89 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Synchronize `configure.ac` and `distrib/configure.ac.in`
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70560952 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Fix `hadrian/bindist/config.mk.in`
… as suggested by @bgamari
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b042b125 by sheaf at 2023-03-06T17:06:50-05:00
Apply 1 suggestion(s) to 1 file(s)
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674b6b81 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Try to create somewhat portable `ld` command
I cannot figure out a good way to generate an `ld` command
that works on both Linux and macOS. Normally you'd use something
like `AC_LINK_IFELSE` for this purpose (I think), but that won't
let us test response file support.
- - - - -
83b0177e by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Quote variables
… as suggested by @bgamari
- - - - -
845f404d by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Fix configure failure on alpine linux
- - - - -
c56a3ae6 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Small fixes to configure script
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cad5c576 by Andrei Borzenkov at 2023-03-06T17:07:33-05:00
Convert diagnostics in GHC.Rename.Module to proper TcRnMessage (#20115)
I've turned almost all occurrences of TcRnUnknownMessage in GHC.Rename.Module
module into a proper TcRnMessage.
Instead, these TcRnMessage messages were introduced:
TcRnIllegalInstanceHeadDecl
TcRnUnexpectedStandaloneDerivingDecl
TcRnUnusedVariableInRuleDecl
TcRnUnexpectedStandaloneKindSig
TcRnIllegalRuleLhs
TcRnBadAssocRhs
TcRnDuplicateRoleAnnot
TcRnDuplicateKindSig
TcRnIllegalDerivStrategy
TcRnIllegalMultipleDerivClauses
TcRnNoDerivStratSpecified
TcRnStupidThetaInGadt
TcRnBadImplicitSplice
TcRnShadowedTyVarNameInFamResult
TcRnIncorrectTyVarOnLhsOfInjCond
TcRnUnknownTyVarsOnRhsOfInjCond
Was introduced one helper type:
RuleLhsErrReason
- - - - -
c6432eac by Apoorv Ingle at 2023-03-06T23:26:12+00:00
Constraint simplification loop now depends on `ExpansionFuel`
instead of a boolean flag for `CDictCan.cc_pend_sc`.
Pending givens get a fuel of 3 while Wanted and quantified constraints get a fuel of 1.
This helps pending given constraints to keep up with pending wanted constraints in case of
`UndecidableSuperClasses` and superclass expansions while simplifying the infered type.
Adds 3 dynamic flags for controlling the fuels for each type of constraints
`-fgivens-expansion-fuel` for givens `-fwanteds-expansion-fuel` for wanteds and `-fqcs-expansion-fuel` for quantified constraints
Fixes #21909
Added Tests T21909, T21909b
Added Note [Expanding Recursive Superclasses and ExpansionFuel]
- - - - -
a5afc8ab by Andrew Lelechenko at 2023-03-06T22:51:01-05:00
Documentation: describe laziness of several function from Data.List
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fa559c28 by Ollie Charles at 2023-03-07T20:56:21+00:00
Add `Data.Functor.unzip`
This function is currently present in `Data.List.NonEmpty`, but `Data.Functor`
is a better home for it. This change was discussed and approved by the CLC
at https://github.com/haskell/core-libraries-committee/issues/88.
- - - - -
2aa07708 by MorrowM at 2023-03-07T21:22:22-05:00
Fix documentation for traceWith and friends
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f3ff7cb1 by David Binder at 2023-03-08T01:24:17-05:00
Remove utils/hpc subdirectory and its contents
- - - - -
cf98e286 by David Binder at 2023-03-08T01:24:17-05:00
Add git submodule for utils/hpc
- - - - -
605fbbb2 by David Binder at 2023-03-08T01:24:18-05:00
Update commit for utils/hpc git submodule
- - - - -
606793d4 by David Binder at 2023-03-08T01:24:18-05:00
Update commit for utils/hpc git submodule
- - - - -
4158722a by Sylvain Henry at 2023-03-08T01:24:58-05:00
linker: fix linking with aligned sections (#23066)
Take section alignment into account instead of assuming 16 bytes (which
is wrong when the section requires 32 bytes, cf #23066).
- - - - -
1e0d8fdb by Greg Steuck at 2023-03-08T08:59:05-05:00
Change hostSupportsRPaths to report False on OpenBSD
OpenBSD does support -rpath but ghc build process relies on some
related features that don't work there. See ghc/ghc#23011
- - - - -
bed3a292 by Alexis King at 2023-03-08T08:59:53-05:00
bytecode: Fix bitmaps for BCOs used to tag tuples and prim call args
fixes #23068
- - - - -
321d46d9 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts: Drop redundant prototype
- - - - -
abb6070f by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Fix style
- - - - -
be278901 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Deduplicate assertion
- - - - -
b9034639 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts: Fix type issues in Sparks.h
Adds explicit casts to satisfy a C++ compiler.
- - - - -
da7b2b94 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts: Use release ordering when storing thread labels
Since this makes the ByteArray# visible from other cores.
- - - - -
5b7f6576 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts/BlockAlloc: Allow disabling of internal assertions
These can be quite expensive and it is sometimes useful to compile a
DEBUG RTS without them.
- - - - -
6283144f by Ben Gamari at 2023-03-08T15:02:30-05:00
rts/Sanity: Mark pinned_object_blocks
- - - - -
9b528404 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts/Sanity: Look at nonmoving saved_filled lists
- - - - -
0edc5438 by Ben Gamari at 2023-03-08T15:02:30-05:00
Evac: Squash data race in eval_selector_chain
- - - - -
7eab831a by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Clarify implementation
This makes the intent of this implementation a bit clearer.
- - - - -
532262b9 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Clarify comment
- - - - -
bd9cd84b by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Add missing no-op in busy-wait loop
- - - - -
c4e6bfc8 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Don't push empty arrays to update remembered set
Previously the write barrier of resizeSmallArray# incorrectly handled
resizing of zero-sized arrays, pushing an invalid pointer to the update
remembered set.
Fixes #22931.
- - - - -
92227b60 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Fix handling of weak pointers
This fixes an interaction between aging and weak pointer handling which
prevented the finalization of some weak pointers. In particular, weak
pointers could have their keys incorrectly marked by the preparatory
collector, preventing their finalization by the subsequent concurrent
collection.
While in the area, we also significantly improve the assertions
regarding weak pointers.
Fixes #22327.
- - - - -
ba7e7972 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Sanity check nonmoving large objects and compacts
- - - - -
71b038a1 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Sanity check mutable list
Assert that entries in the nonmoving generation's generational
remembered set (a.k.a. mutable list) live in nonmoving generation.
- - - - -
99d144d5 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Don't show occupancy if we didn't collect live words
- - - - -
81d6cc55 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Fix tracking of FILLED_SWEEPING segments
Previously we only updated the state of the segment at the head of each
allocator's filled list.
- - - - -
58e53bc4 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Assert state of swept segments
- - - - -
2db92e01 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Handle new closures in nonmovingIsNowAlive
We must conservatively assume that new closures are reachable since we
are not guaranteed to mark such blocks.
- - - - -
e4c3249f by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Don't clobber update rem sets of old capabilities
Previously `storageAddCapabilities` (called by `setNumCapabilities`) would
clobber the update remembered sets of existing capabilities when
increasing the capability count. Fix this by only initializing the
update remembered sets of the newly-created capabilities.
Fixes #22927.
- - - - -
1b069671 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Add missing write barriers in selector optimisation
This fixes the selector optimisation, adding a few write barriers which
are necessary for soundness. See the inline comments for details.
Fixes #22930.
- - - - -
d4032690 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Post-sweep sanity checking
- - - - -
0baa8752 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Avoid n_caps race
- - - - -
5d3232ba by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Don't push if nonmoving collector isn't enabled
- - - - -
0a7eb0aa by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Be more paranoid in segment tracking
Previously we left various segment link pointers dangling. None of this
wrong per se, but it did make it harder than necessary to debug.
- - - - -
7c817c0a by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Sync-phase mark budgeting
Here we significantly improve the bound on sync phase pause times by
imposing a limit on the amount of work that we can perform during the
sync. If we find that we have exceeded our marking budget then we allow
the mutators to resume, return to concurrent marking, and try
synchronizing again later.
Fixes #22929.
- - - - -
ce22a3e2 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Allow pinned gen0 objects to be WEAK keys
- - - - -
78746906 by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Reenable assertion
- - - - -
b500867a by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Move current segment array into Capability
The current segments are conceptually owned by the mutator, not the
collector. Consequently, it was quite tricky to prove that the mutator
would not race with the collect due to this shared state. It turns out
that such races are possible: when resizing the current segment array
we may concurrently try to take a heap census. This will attempt to walk
the current segment array, causing a data race.
Fix this by moving the current segment array into `Capability`, where it
belongs.
Fixes #22926.
- - - - -
56e669c1 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Fix Note references
Some references to Note [Deadlock detection under the non-moving
collector] were missing an article.
- - - - -
4a7650d7 by Ben Gamari at 2023-03-08T15:02:31-05:00
rts/Sanity: Fix block count assertion with non-moving collector
The nonmoving collector does not use `oldest_gen->blocks` to track its
block list. However, it nevertheless updates `oldest_gen->n_blocks` to
ensure that its size is accounted for by the storage manager.
Consequently, we must not attempt to assert consistency between the two.
- - - - -
96a5aaed by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Don't call prepareUnloadCheck
When the nonmoving GC is in use we do not call `checkUnload` (since we
don't unload code) and therefore should not call `prepareUnloadCheck`,
lest we run into assertions.
- - - - -
6c6674ca by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Encapsulate block allocator spinlock
This makes it a bit easier to add instrumentation on this spinlock
while debugging.
- - - - -
e84f7167 by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Skip some tests when sanity checking is enabled
- - - - -
3ae0f368 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Fix unregisterised build
- - - - -
4eb9d06b by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Ensure that sanity checker accounts for saved_filled segments
- - - - -
f0cf384d by Ben Gamari at 2023-03-08T15:02:31-05:00
hadrian: Add +boot_nonmoving_gc flavour transformer
For using GHC bootstrapping to validate the non-moving GC.
- - - - -
581e58ac by Ben Gamari at 2023-03-08T15:02:31-05:00
gitlab-ci: Add job bootstrapping with nonmoving GC
- - - - -
487a8b58 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Move allocator into new source file
- - - - -
8f374139 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Split out nonmovingAllocateGC
- - - - -
662b6166 by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Only run T22795* in the normal way
It doesn't make sense to run these in multiple ways as they merely test
whether `-threaded`/`-single-threaded` flags.
- - - - -
0af21dfa by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Rename clear_segment(_free_blocks)?
To reflect the fact that these are to do with the nonmoving collector,
now since they are exposed no longer static.
- - - - -
7bcb192b by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Fix incorrect STATIC_INLINE
This should be INLINE_HEADER lest we get unused declaration warnings.
- - - - -
f1fd3ffb by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Mark ffi023 as broken due to #23089
- - - - -
a57f12b3 by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Skip T7160 in the nonmoving way
Finalization order is different under the nonmoving collector.
- - - - -
f6f12a36 by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Capture GC configuration in a struct
The number of distinct arguments passed to GarbageCollect was getting a
bit out of hand.
- - - - -
ba73a807 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Non-concurrent collection
- - - - -
7c813d06 by Alexis King at 2023-03-08T15:03:10-05:00
hadrian: Fix flavour compiler stage options off-by-one error
!9193 pointed out that ghcDebugAssertions was supposed to be a predicate
on the stage of the built compiler, but in practice it was a predicate
on the stage of the compiler used to build. Unfortunately, while it
fixed that issue for ghcDebugAssertions, it documented every other
similar option as behaving the same way when in fact they all used the
old behavior.
The new behavior of ghcDebugAssertions seems more intuitive, so this
commit changes the interpretation of every other option to match. It
also improves the enableProfiledGhc and debugGhc flavour transformers by
making them more selective about which stages in which they build
additional library/RTS ways.
- - - - -
f97c7f6d by Luite Stegeman at 2023-03-09T09:52:09-05:00
Delete created temporary subdirectories at end of session.
This patch adds temporary subdirectories to the list of
paths do clean up at the end of the GHC session. This
fixes warnings about non-empty temporary directories.
Fixes #22952
- - - - -
9ea719f2 by Apoorv Ingle at 2023-03-09T09:52:45-05:00
Fixes #19627.
Previously the solver failed with an unhelpful "solver reached too may iterations" error.
With the fix for #21909 in place we no longer have the possibility of generating such an error if we have `-fconstraint-solver-iteration` > `-fgivens-fuel > `-fwanteds-fuel`. This is true by default, and the said fix also gives programmers a knob to control how hard the solver should try before giving up.
This commit adds:
* Reference to ticket #19627 in the Note [Expanding Recursive Superclasses and ExpansionFuel]
* Test `typecheck/should_fail/T19627.hs` for regression purposes
- - - - -
ec2d93eb by Sebastian Graf at 2023-03-10T10:18:54-05:00
DmdAnal: Fix a panic on OPAQUE and trivial/PAP RHS (#22997)
We should not panic in `add_demands` (now `set_lam_dmds`), because that code
path is legimitely taken for OPAQUE PAP bindings, as in T22997.
Fixes #22997.
- - - - -
5b4628ae by Sylvain Henry at 2023-03-10T10:19:34-05:00
JS: remove dead code for old integer-gmp
- - - - -
bab23279 by Josh Meredith at 2023-03-10T23:24:49-05:00
JS: Fix implementation of MK_JSVAL
- - - - -
ec263a59 by Sebastian Graf at 2023-03-10T23:25:25-05:00
Simplify: Move `wantEtaExpansion` before expensive `do_eta_expand` check
There is no need to run arity analysis and what not if we are not in a
Simplifier phase that eta-expands or if we don't want to eta-expand the
expression in the first place.
Purely a refactoring with the goal of improving compiler perf.
- - - - -
047e9d4f by Josh Meredith at 2023-03-13T03:56:03+00:00
JS: fix implementation of forceBool to use JS backend syntax
- - - - -
559a4804 by Sebastian Graf at 2023-03-13T07:31:23-04:00
Simplifier: `countValArgs` should not count Type args (#23102)
I observed miscompilations while working on !10088 caused by this.
Fixes #23102.
Metric Decrease:
T10421
- - - - -
536d1f90 by Matthew Pickering at 2023-03-13T14:04:49+00:00
Bump Win32 to 2.13.4.0
Updates Win32 submodule
- - - - -
ee17001e by Ben Gamari at 2023-03-13T21:18:24-04:00
ghc-bignum: Drop redundant include-dirs field
- - - - -
c9c26cd6 by Teo Camarasu at 2023-03-16T12:17:50-04:00
Fix BCO creation setting caps when -j > -N
* Remove calls to 'setNumCapabilities' in 'createBCOs'
These calls exist to ensure that 'createBCOs' can benefit from
parallelism. But this is not the right place to call
`setNumCapabilities`. Furthermore the logic differs from that in the
driver causing the capability count to be raised and lowered at each TH
call if -j > -N.
* Remove 'BCOOpts'
No longer needed as it was only used to thread the job count down to `createBCOs`
Resolves #23049
- - - - -
5ddbf5ed by Teo Camarasu at 2023-03-16T12:17:50-04:00
Add changelog entry for #23049
- - - - -
6e3ce9a4 by Ben Gamari at 2023-03-16T12:18:26-04:00
configure: Fix FIND_CXX_STD_LIB test on Darwin
Annoyingly, Darwin's <cstddef> includes <version> and APFS is
case-insensitive. Consequently, it will end up #including the
`VERSION` file generated by the `configure` script on the second
and subsequent runs of the `configure` script.
See #23116.
- - - - -
19d6d039 by sheaf at 2023-03-16T21:31:22+01:00
ghci: only keep the GlobalRdrEnv in ModInfo
The datatype GHC.UI.Info.ModInfo used to store a ModuleInfo,
which includes a TypeEnv. This can easily cause space leaks as we
have no way of forcing everything in a type environment.
In GHC, we only use the GlobalRdrEnv, which we can force completely.
So we only store that instead of a fully-fledged ModuleInfo.
- - - - -
73d07c6e by Torsten Schmits at 2023-03-17T14:36:49-04:00
Add structured error messages for GHC.Tc.Utils.Backpack
Tracking ticket: #20119
MR: !10127
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
One occurrence, when handing a nested error from the interface loading
machinery, was omitted. It will be handled by a subsequent changeset
that addresses interface errors.
- - - - -
a13affce by Andrei Borzenkov at 2023-03-21T11:17:17-04:00
Rename () into Unit, (,,...,,) into Tuple<n> (#21294)
This patch implements a part of GHC Proposal #475.
The key change is in GHC.Tuple.Prim:
- data () = ()
- data (a,b) = (a,b)
- data (a,b,c) = (a,b,c)
...
+ data Unit = ()
+ data Tuple2 a b = (a,b)
+ data Tuple3 a b c = (a,b,c)
...
And the rest of the patch makes sure that Unit and Tuple<n>
are pretty-printed as () and (,,...,,) in various contexts.
Updates the haddock submodule.
Co-authored-by: Vladislav Zavialov <vlad.z.4096(a)gmail.com>
- - - - -
23642bf6 by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00
docs: fix some wrongs in the eventlog format documentation
- - - - -
90159773 by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00
docs: explain the BLOCK_MARKER event
- - - - -
ab1c25e8 by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00
docs: add BlockedOnMVarRead thread status in eventlog encodings
- - - - -
898afaef by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00
docs: add TASK_DELETE event in eventlog encodings
- - - - -
bb05b4cc by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00
docs: add WALL_CLOCK_TIME event in eventlog encodings
- - - - -
eeea0343 by Torsten Schmits at 2023-03-21T11:18:34-04:00
Add structured error messages for GHC.Tc.Utils.Env
Tracking ticket: #20119
MR: !10129
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
be1d4be8 by Andrew Lelechenko at 2023-03-21T11:19:13-04:00
Document pdep / pext primops
- - - - -
e8b4aac4 by Alex Mason at 2023-03-21T18:11:04-04:00
Allow LLVM backend to use HDoc for faster file generation.
Also remove the MetaStmt constructor from LlvmStatement and places the annotations into the Store statement.
Includes “Implement a workaround for -no-asm-shortcutting bug“ (https://gitlab.haskell.org/ghc/ghc/-/commit/2fda9e0df886cc551e2cd6b9c2a3841…)
- - - - -
ea24360d by Luite Stegeman at 2023-03-21T18:11:44-04:00
Compute LambdaFormInfo when using JavaScript backend.
CmmCgInfos is needed to write interface files, but the
JavaScript backend does not generate it, causing
"Name without LFInfo" warnings.
This patch adds a conservative but always correct
CmmCgInfos when the JavaScript backend is used.
Fixes #23053
- - - - -
926ad6de by Simon Peyton Jones at 2023-03-22T01:03:08-04:00
Be more careful about quantification
This MR is driven by #23051. It does several things:
* It is guided by the generalisation plan described in #20686.
But it is still far from a complete implementation of that plan.
* Add Note [Inferred type with escaping kind] to GHC.Tc.Gen.Bind.
This explains that we don't (yet, pending #20686) directly
prevent generalising over escaping kinds.
* In `GHC.Tc.Utils.TcMType.defaultTyVar` we default RuntimeRep
and Multiplicity variables, beause we don't want to quantify over
them. We want to do the same for a Concrete tyvar, but there is
nothing sensible to default it to (unless it has kind RuntimeRep,
in which case it'll be caught by an earlier case). So we promote
instead.
* Pure refactoring in GHC.Tc.Solver:
* Rename decideMonoTyVars to decidePromotedTyVars, since that's
what it does.
* Move the actual promotion of the tyvars-to-promote from
`defaultTyVarsAndSimplify` to `decidePromotedTyVars`. This is a
no-op; just tidies up the code. E.g then we don't need to
return the promoted tyvars from `decidePromotedTyVars`.
* A little refactoring in `defaultTyVarsAndSimplify`, but no
change in behaviour.
* When making a TauTv unification variable into a ConcreteTv
(in GHC.Tc.Utils.Concrete.makeTypeConcrete), preserve the occ-name
of the type variable. This just improves error messages.
* Kill off dead code: GHC.Tc.Utils.TcMType.newConcreteHole
- - - - -
0ab0cc11 by Sylvain Henry at 2023-03-22T01:03:48-04:00
Testsuite: use appropriate predicate for ManyUbxSums test (#22576)
- - - - -
048c881e by romes at 2023-03-22T01:04:24-04:00
fix: Incorrect @since annotations in GHC.TypeError
Fixes #23128
- - - - -
a1528b68 by Sylvain Henry at 2023-03-22T01:05:04-04:00
Testsuite: use req_interp predicate for T16318 (#22370)
- - - - -
ad765b6f by Sylvain Henry at 2023-03-22T01:05:04-04:00
Testsuite: use req_interp predicate for T20214
- - - - -
e0b8eaf3 by Simon Peyton Jones at 2023-03-22T09:50:13+00:00
Refactor the constraint solver pipeline
The big change is to put the entire type-equality solver into
GHC.Tc.Solver.Equality, rather than scattering it over Canonical
and Interact. Other changes
* EqCt becomes its own data type, a bit like QCInst. This is
great because EqualCtList is then just [EqCt]
* New module GHC.Tc.Solver.Dict has come of the class-contraint
solver. In due course it will be all. One step at a time.
This MR is intended to have zero change in behaviour: it is a
pure refactor. It opens the way to subsequent tidying up, we
believe.
- - - - -
cedf9a3b by Torsten Schmits at 2023-03-22T15:31:18-04:00
Add structured error messages for GHC.Tc.Utils.TcMType
Tracking ticket: #20119
MR: !10138
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
30d45e97 by Sylvain Henry at 2023-03-22T15:32:01-04:00
Testsuite: use js_skip for T2615 (#22374)
- - - - -
8c98deba by Armando Ramirez at 2023-03-23T09:19:32-04:00
Optimized Foldable methods for Data.Functor.Compose
Explicitly define length, elem, etc. in Foldable instance for Data.Functor.Compose
Implementation of https://github.com/haskell/core-libraries-committee/issues/57
- - - - -
bc066108 by Armando Ramirez at 2023-03-23T09:19:32-04:00
Additional optimized versions
- - - - -
80fce576 by Andrew Lelechenko at 2023-03-23T09:19:32-04:00
Simplify minimum/maximum in instance Foldable (Compose f g)
- - - - -
8cb88a5a by Andrew Lelechenko at 2023-03-23T09:19:32-04:00
Update changelog to mention changes to instance Foldable (Compose f g)
- - - - -
e1c8c41d by Torsten Schmits at 2023-03-23T09:20:13-04:00
Add structured error messages for GHC.Tc.TyCl.PatSyn
Tracking ticket: #20117
MR: !10158
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
f932c589 by Adam Gundry at 2023-03-24T02:36:09-04:00
Allow WARNING pragmas to be controlled with custom categories
Closes #17209. This implements GHC Proposal 541, allowing a WARNING
pragma to be annotated with a category like so:
{-# WARNING in "x-partial" head "This function is undefined on empty lists." #-}
The user can then enable, disable and set the severity of such warnings
using command-line flags `-Wx-partial`, `-Werror=x-partial` and so on. There
is a new warning group `-Wextended-warnings` containing all these warnings.
Warnings without a category are treated as if the category was `deprecations`,
and are (still) controlled by the flags `-Wdeprecations`
and `-Wwarnings-deprecations`.
Updates Haddock submodule.
- - - - -
0426515b by Adam Gundry at 2023-03-24T02:36:09-04:00
Move mention of warning groups change to 9.8.1 release notes
- - - - -
b8d783d2 by Ben Gamari at 2023-03-24T02:36:45-04:00
nativeGen/AArch64: Fix bitmask immediate predicate
Previously the predicate for determining whether a logical instruction
operand could be encoded as a bitmask immediate was far too
conservative. This meant that, e.g., pointer untagged required five
instructions whereas it should only require one.
Fixes #23030.
- - - - -
46120bb6 by Joachim Breitner at 2023-03-24T13:09:43-04:00
User's guide: Improve docs for -Wall
previously it would list the warnings _not_ enabled by -Wall. That’s
unnecessary round-about and was out of date. So let's just name
the relevant warnings (based on `compiler/GHC/Driver/Flags.hs`).
- - - - -
509d1f11 by Ben Gamari at 2023-03-24T13:10:20-04:00
codeGen/tsan: Disable instrumentation of unaligned stores
There is some disagreement regarding the prototype of
`__tsan_unaligned_write` (specifically whether it takes just the written
address, or the address and the value as an argument). Moreover, I have
observed crashes which appear to be due to it. Disable instrumentation
of unaligned stores as a temporary mitigation.
Fixes #23096.
- - - - -
6a73655f by Li-yao Xia at 2023-03-25T00:02:44-04:00
base: Document GHC versions associated with past base versions in the changelog
- - - - -
43bd7694 by Teo Camarasu at 2023-03-25T00:03:24-04:00
Add regression test for #17574
This test currently fails in the nonmoving way
- - - - -
f2d56bf7 by Teo Camarasu at 2023-03-25T00:03:24-04:00
fix: account for large and compact object stats with nonmoving gc
Make sure that we keep track of the size of large and compact objects that have been moved onto the nonmoving heap.
We keep track of their size and add it to the amount of live bytes in nonmoving segments to get the total size of the live nonmoving heap.
Resolves #17574
- - - - -
7131b705 by David Feuer at 2023-03-25T00:04:04-04:00
Modify ThreadId documentation and comments
For a long time, `GHC.Conc.Sync` has said
```haskell
-- ToDo: data ThreadId = ThreadId (Weak ThreadId#)
-- But since ThreadId# is unlifted, the Weak type must use open
-- type variables.
```
We are now actually capable of using `Weak# ThreadId#`, but the
world has moved on. To support the `Show` and `Ord` instances, we'd
need to store the thread ID number in the `ThreadId`. And it seems
very difficult to continue to support `threadStatus` in that regime,
since it needs to be able to explain how threads died. In addition,
garbage collection of weak references can be quite expensive, and it
would be hard to evaluate the cost over he whole ecosystem. As discussed
in
[this CLC issue](https://github.com/haskell/core-libraries-committee/issues/125),
it doesn't seem very likely that we'll actually switch to weak
references here.
- - - - -
c421bbbb by Ben Gamari at 2023-03-25T00:04:41-04:00
rts: Fix barriers of IND and IND_STATIC
Previously IND and IND_STATIC lacked the acquire barriers enjoyed by
BLACKHOLE. As noted in the (now updated) Note [Heap memory barriers],
this barrier is critical to ensure that the indirectee is visible to the
entering core.
Fixes #22872.
- - - - -
62fa7faa by Andrew Lelechenko at 2023-03-25T00:05:22-04:00
Improve documentation of atomicModifyMutVar2#
- - - - -
b2d14d0b by Cheng Shao at 2023-03-25T03:46:43-04:00
rts: use performBlockingMajorGC in hs_perform_gc and fix ffi023
This patch does a few things:
- Add the missing RtsSymbols.c entry of performBlockingMajorGC
- Make hs_perform_gc call performBlockingMajorGC, which restores
previous behavior
- Use hs_perform_gc in ffi023
- Remove rts_clearMemory() call in ffi023, it now works again in some
test ways previously marked as broken. Fixes #23089
- - - - -
d9ae24ad by Cheng Shao at 2023-03-25T03:46:44-04:00
testsuite: add the rts_clearMemory test case
This patch adds a standalone test case for rts_clearMemory that mimics
how it's typically used by wasm backend users and ensures this RTS API
isn't broken by future RTS refactorings. Fixes #23901.
- - - - -
80729d96 by Andrew Lelechenko at 2023-03-25T03:47:22-04:00
Improve documentation for resizing of byte arrays
- - - - -
c6ec4cd1 by Ben Gamari at 2023-03-25T20:23:47-04:00
rts: Don't rely on EXTERN_INLINE for slop-zeroing logic
Previously we relied on calling EXTERN_INLINE functions defined in
ClosureMacros.h from Cmm to zero slop. However, as far as I can tell,
this is no longer safe to do in C99 as EXTERN_INLINE definitions may be emitted
in each compilation unit.
Fix this by explicitly declaring a new set of non-inline functions in
ZeroSlop.c which can be called from Cmm and marking the ClosureMacros.h
definitions as INLINE_HEADER.
In the future we should try to eliminate EXTERN_INLINE.
- - - - -
c32abd4b by Ben Gamari at 2023-03-25T20:23:48-04:00
rts: Fix capability-count check in zeroSlop
Previously `zeroSlop` examined `RtsFlags` to determine whether the
program was single-threaded. This is wrong; a program may be started
with `+RTS -N1` yet the process may later increase the capability count
with `setNumCapabilities`. This lead to quite subtle and rare crashes.
Fixes #23088.
- - - - -
656d4cb3 by Ryan Scott at 2023-03-25T20:24:23-04:00
Add Eq/Ord instances for SSymbol, SChar, and SNat
This implements [CLC proposal #148](https://github.com/haskell/core-libraries-committee/issues/148).
- - - - -
4f93de88 by David Feuer at 2023-03-26T15:33:02-04:00
Update and expand atomic modification Haddocks
* The documentation for `atomicModifyIORef` and `atomicModifyIORef'`
were incomplete, and the documentation for `atomicModifyIORef` was
out of date. Update and expand.
* Remove a useless lazy pattern match in the definition of
`atomicModifyIORef`. The pair it claims to match lazily
was already forced by `atomicModifyIORef2`.
- - - - -
e1fb56b2 by David Feuer at 2023-03-26T15:33:41-04:00
Document the constructor name for lists
Derived `Data` instances use raw infix constructor names when applicable.
The `Data.Data [a]` instance, if derived, would have a constructor name
of `":"`. However, it actually uses constructor name `"(:)"`. Document this
peculiarity.
See https://github.com/haskell/core-libraries-committee/issues/147
- - - - -
c1f755c4 by Simon Peyton Jones at 2023-03-27T22:09:41+01:00
Make exprIsConApp_maybe a bit cleverer
Addresses #23159.
See Note Note [Exploit occ-info in exprIsConApp_maybe]
in GHC.Core.SimpleOpt.
Compile times go down very slightly, but always go down,
never up. Good!
Metrics: compile_time/bytes allocated
------------------------------------------------
CoOpt_Singletons(normal) -1.8%
T15703(normal) -1.2% GOOD
geo. mean -0.1%
minimum -1.8%
maximum +0.0%
Metric Decrease:
CoOpt_Singletons
T15703
- - - - -
76bb4c58 by Ryan Scott at 2023-03-28T08:12:08-04:00
Add COMPLETE pragmas to TypeRep, SSymbol, SChar, and SNat
This implements
[CLC proposal #149](https://github.com/haskell/core-libraries-committee/issues/149).
- - - - -
3f374399 by sheaf at 2023-03-29T13:57:33+02:00
Handle records in the renamer
This patch moves the field-based logic for disambiguating record updates
to the renamer. The type-directed logic, scheduled for removal, remains
in the typechecker.
To do this properly (and fix the myriad of bugs surrounding the treatment
of duplicate record fields), we took the following main steps:
1. Create GREInfo, a renamer-level equivalent to TyThing which stores
information pertinent to the renamer.
This allows us to uniformly treat imported and local Names in the
renamer, as described in Note [GREInfo].
2. Remove GreName. Instead of a GlobalRdrElt storing GreNames, which
distinguished between normal names and field names, we now store
simple Names in GlobalRdrElt, along with the new GREInfo information
which allows us to recover the FieldLabel for record fields.
3. Add namespacing for record fields, within the OccNames themselves.
This allows us to remove the mangling of duplicate field selectors.
This change ensures we don't print mangled names to the user in
error messages, and allows us to handle duplicate record fields
in Template Haskell.
4. Move record disambiguation to the renamer, and operate on the
level of data constructors instead, to handle #21443.
The error message text for ambiguous record updates has also been
changed to reflect that type-directed disambiguation is on the way
out.
(3) means that OccEnv is now a bit more complex: we first key on the
textual name, which gives an inner map keyed on NameSpace:
OccEnv a ~ FastStringEnv (UniqFM NameSpace a)
Note that this change, along with (2), both increase the memory residency
of GlobalRdrEnv = OccEnv [GlobalRdrElt], which causes a few tests to
regress somewhat in compile-time allocation.
Even though (3) simplified a lot of code (in particular the treatment of
field selectors within Template Haskell and in error messages), it came
with one important wrinkle: in the situation of
-- M.hs-boot
module M where { data A; foo :: A -> Int }
-- M.hs
module M where { data A = MkA { foo :: Int } }
we have that M.hs-boot exports a variable foo, which is supposed to match
with the record field foo that M exports. To solve this issue, we add a
new impedance-matching binding to M
foo{var} = foo{fld}
This mimics the logic that existed already for impedance-binding DFunIds,
but getting it right was a bit tricky.
See Note [Record field impedance matching] in GHC.Tc.Module.
We also needed to be careful to avoid introducing space leaks in GHCi.
So we dehydrate the GlobalRdrEnv before storing it anywhere, e.g. in
ModIface. This means stubbing out all the GREInfo fields, with the
function forceGlobalRdrEnv.
When we read it back in, we rehydrate with rehydrateGlobalRdrEnv.
This robustly avoids any space leaks caused by retaining old type
environments.
Fixes #13352 #14848 #17381 #17551 #19664 #21443 #21444 #21720 #21898 #21946 #21959 #22125 #22160 #23010 #23062 #23063
Updates haddock submodule
-------------------------
Metric Increase:
MultiComponentModules
MultiLayerModules
MultiLayerModulesDefsGhci
MultiLayerModulesNoCode
T13701
T14697
hard_hole_fits
-------------------------
- - - - -
4f1940f0 by sheaf at 2023-03-29T13:57:33+02:00
Avoid repeatedly shadowing in shadowNames
This commit refactors GHC.Type.Name.Reader.shadowNames to first
accumulate all the shadowing arising from the introduction of a new
set of GREs, and then applies all the shadowing to the old GlobalRdrEnv
in one go.
- - - - -
d246049c by sheaf at 2023-03-29T13:57:34+02:00
igre_prompt_env: discard "only-qualified" names
We were unnecessarily carrying around names only available qualified
in igre_prompt_env, violating the icReaderEnv invariant.
We now get rid of these, as they aren't needed for the shadowing
computation that igre_prompt_env exists for.
Fixes #23177
-------------------------
Metric Decrease:
T14052
T14052Type
-------------------------
- - - - -
41a572f6 by Matthew Pickering at 2023-03-29T16:17:21-04:00
hadrian: Fix path to HpcParser.y
The source for this project has been moved into a src/ folder so we also
need to update this path.
Fixes #23187
- - - - -
b159e0e9 by doyougnu at 2023-03-30T01:40:08-04:00
js: split JMacro into JS eDSL and JS syntax
This commit:
Splits JExpr and JStat into two nearly identical DSLs:
- GHC.JS.Syntax is the JMacro based DSL without unsaturation, i.e., a
value cannot be unsaturated, or, a value of this DSL is a witness that a
value of GHC.JS.Unsat has been saturated
- GHC.JS.Unsat is the JMacro DSL from GHCJS with Unsaturation.
Then all binary and outputable instances are changed to use
GHC.JS.Syntax.
This moves us closer to closing out #22736 and #22352. See #22736 for
roadmap.
-------------------------
Metric Increase:
CoOpt_Read
LargeRecord
ManyAlternatives
PmSeriesS
PmSeriesT
PmSeriesV
T10421
T10858
T11195
T11374
T11822
T12227
T12707
T13035
T13253
T13253-spj
T13379
T14683
T15164
T15703
T16577
T17096
T17516
T17836
T18140
T18282
T18304
T18478
T18698a
T18698b
T18923
T1969
T19695
T20049
T21839c
T3064
T4801
T5321FD
T5321Fun
T5631
T5642
T783
T9198
T9233
T9630
TcPlugin_RewritePerf
WWRec
-------------------------
- - - - -
f4f1f14f by Sylvain Henry at 2023-03-30T01:40:49-04:00
ghc-heap: remove wrong Addr# coercion (#23181)
Conversion from Addr# to I# isn't correct with the JS backend.
Also used the opportunity to reenable 64-bit Word/Int tests
- - - - -
a5360490 by Ben Gamari at 2023-03-30T01:41:25-04:00
testsuite: Fix racing prints in T21465
As noted in #23155, we previously failed to add flushes necessary to
ensure predictable output.
Fixes #23155.
- - - - -
98b5cf67 by Matthew Pickering at 2023-03-30T09:58:40+01:00
Revert "ghc-heap: remove wrong Addr# coercion (#23181)"
This reverts commit f4f1f14f8009c3c120b8b963ec130cbbc774ec02.
This fails to build with GHC-9.2 as a boot compiler.
See #23195 for tracking this issue.
- - - - -
61a2dfaa by Andrew Lelechenko at 2023-03-30T14:35:57-04:00
Add {-# WARNING #-} to Data.List.{head,tail}
- - - - -
8f15c47c by Andrew Lelechenko at 2023-03-30T14:35:57-04:00
Fixes to accomodate Data.List.{head,tail} with {-# WARNING #-}
- - - - -
7c7dbade by Andrew Lelechenko at 2023-03-30T14:35:57-04:00
Bump submodules
- - - - -
d2d8251b by Andrew Lelechenko at 2023-03-30T14:35:57-04:00
Fix tests
- - - - -
3d38dcb6 by sheaf at 2023-03-30T14:35:57-04:00
Proxies for head and tail: review suggestions
- - - - -
930edcfd by sheaf at 2023-03-30T14:36:33-04:00
docs: move RecordUpd changelog entry to 9.8
This was accidentally included in the 9.6 changelog
instead of the 9.6 changelog.
- - - - -
6f885e65 by sheaf at 2023-03-30T14:37:09-04:00
Add LANGUAGE GADTs to GHC.Rename.Env
We need to enable this extension for the file to compile with ghc 9.2,
as we are pattern matching on a GADT and this required the GADT extension
to be enabled until 9.4.
- - - - -
6d6a37a8 by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: make lint-ci-config job fast again
We don't pin our nixpkgs revision and tracks the default
nixpkgs-unstable channel anyway. Instead of using
haskell.packages.ghc924, we should be using haskell.packages.ghc92 to
maximize the binary cache hit rate and make lint-ci-config job fast
again. Also bumps the nix docker image to the latest revision.
- - - - -
ef1548c4 by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: ensure that all non-i386 pipelines do parallel xz compression
We can safely enable parallel xz compression for non-i386 pipelines.
However, previously we didn't export XZ_OPT, so the xz process won't
see it if XZ_OPT hasn't already been set in the current job.
- - - - -
20432d16 by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: unset CROSS_EMULATOR for js job
- - - - -
4a24dbbe by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: fix lint-testsuite job
The list_broken make target will transitively depend on the
calibrate.out target, which used STAGE1_GHC instead of TEST_HC. It
really should be TEST_HC since that's what get passed in the gitlab CI
config.
- - - - -
cea56ccc by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: use alpine3_17-wasm image for wasm jobs
Bump the ci-images dependency and use the new alpine3_17-wasm docker
image for wasm jobs.
- - - - -
79d0cb32 by Ben Gamari at 2023-03-30T18:43:53+00:00
testsuite/driver: Add basic support for testing cross-compilers
- - - - -
e7392b4e by Ben Gamari at 2023-03-30T18:43:53+00:00
testsuite/driver: Normalize away differences in ghc executable name
- - - - -
ee160d06 by Ben Gamari at 2023-03-30T18:43:53+00:00
hadrian: Pass CROSS_EMULATOR to runtests.py
- - - - -
30c84511 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: don't add optllvm way for wasm32
- - - - -
f1beee36 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: normalize the .wasm extension
- - - - -
a984a103 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: strip the cross ghc prefix in output and error message
- - - - -
f7478d95 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: handle target executable extension
- - - - -
8fe8b653 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: mypy typing error fixes
This patch fixes some mypy typing errors which weren't caught in
previous linting jobs.
- - - - -
0149f32f by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: use context variable instead of thread-local variable
This patch changes a thread-local variable to context variable
instead, which works as intended when the testsuite transitions to use
asyncio & coroutines instead of multi-threading to concurrently run
test cases. Note that this also raises the minimum Python version to
3.7.
- - - - -
ea853ff0 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: asyncify the testsuite driver
This patch refactors the testsuite driver, gets rid of multi-threading
logic for running test cases concurrently, and uses asyncio &
coroutines instead. This is not yak shaving for its own sake; the
previous multi-threading logic is prone to livelock/deadlock
conditions for some reason, even if the total number of threads is
bounded to a thread pool's capacity.
The asyncify change is an internal implementation detail of the
testsuite driver and does not impact most GHC maintainers out there.
The patch does not touch the .T files, test cases can be
added/modified the exact same way as before.
- - - - -
0077cb22 by Matthew Pickering at 2023-03-31T21:28:28-04:00
Add test for T23184
There was an outright bug, which Simon fixed in July 2021, as a little side-fix on a complicated patch:
```
commit 6656f0165a30fc2a22208532ba384fc8e2f11b46
Author: Simon Peyton Jones <simonpj(a)microsoft.com>
Date: Fri Jul 23 23:57:01 2021 +0100
A bunch of changes related to eta reduction
This is a large collection of changes all relating to eta
reduction, originally triggered by #18993, but there followed
a long saga.
Specifics:
...lots of lines omitted...
Other incidental changes
* Fix a fairly long-standing outright bug in the ApplyToVal case of
GHC.Core.Opt.Simplify.mkDupableContWithDmds. I was failing to take the
tail of 'dmds' in the recursive call, which meant the demands were All
Wrong. I have no idea why this has not caused problems before now.
```
Note this "Fix a fairly longstanding outright bug". This is the specific fix
```
@@ -3552,8 +3556,8 @@ mkDupableContWithDmds env dmds
-- let a = ...arg...
-- in [...hole...] a
-- NB: sc_dup /= OkToDup; that is caught earlier by contIsDupable
- do { let (dmd:_) = dmds -- Never fails
- ; (floats1, cont') <- mkDupableContWithDmds env dmds cont
+ do { let (dmd:cont_dmds) = dmds -- Never fails
+ ; (floats1, cont') <- mkDupableContWithDmds env cont_dmds cont
; let env' = env `setInScopeFromF` floats1
; (_, se', arg') <- simplArg env' dup se arg
; (let_floats2, arg'') <- makeTrivial env NotTopLevel dmd (fsLit "karg") arg'
```
Ticket #23184 is a report of the bug that this diff fixes.
- - - - -
62d25071 by mangoiv at 2023-04-01T04:20:01-04:00
[feat] make ($) representation polymorphic
- this change was approved by the CLC in [1] following a CLC proposal [2]
- make ($) representation polymorphic (adjust the type signature)
- change ($) implementation to allow additional polymorphism
- adjust the haddock of ($) to reflect these changes
- add additional documentation to document these changes
- add changelog entry
- adjust tests (move now succeeding tests and adjust stdout of some
tests)
[1] https://github.com/haskell/core-libraries-committee/issues/132#issuecomment…
[2] https://github.com/haskell/core-libraries-committee/issues/132
- - - - -
77c33fb9 by Artem Pelenitsyn at 2023-04-01T04:20:41-04:00
User Guide: update copyright year: 2020->2023
- - - - -
3b5be05a by doyougnu at 2023-04-01T09:42:31-04:00
driver: Unit State Data.Map -> GHC.Unique.UniqMap
In pursuit of #22426. The driver and unit state are major contributors.
This commit also bumps the haddock submodule to reflect the API changes in
UniqMap.
-------------------------
Metric Decrease:
MultiComponentModules
MultiComponentModulesRecomp
T10421
T10547
T12150
T12234
T12425
T13035
T16875
T18140
T18304
T18698a
T18698b
T18923
T20049
T5837
T6048
T9198
-------------------------
- - - - -
a84fba6e by Torsten Schmits at 2023-04-01T09:43:12-04:00
Add structured error messages for GHC.Tc.TyCl
Tracking ticket: #20117
MR: !10183
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
6e2eb275 by doyougnu at 2023-04-01T18:27:56-04:00
JS: Linker: use saturated JExpr
Follow on to MR!10142 in pursuit of #22736
- - - - -
3da69346 by sheaf at 2023-04-01T18:28:37-04:00
Improve haddocks of template-haskell Con datatype
This adds a bit more information, in particular about the lists of
constructors in the GadtC and RecGadtC cases.
- - - - -
3b7bbb39 by sheaf at 2023-04-01T18:28:37-04:00
TH: revert changes to GadtC & RecGadtC
Commit 3f374399 included a breaking-change to the template-haskell
library when it made the GadtC and RecGadtC constructors take non-empty
lists of names. As this has the potential to break many users' packages,
we decided to revert these changes for now.
- - - - -
f60f6110 by Andrew Lelechenko at 2023-04-02T18:59:30-04:00
Rework documentation for data Char
- - - - -
43ebd5dc by Andrew Lelechenko at 2023-04-02T19:00:09-04:00
cmm: implement parsing of MO_AtomicRMW from hand-written CMM files
Fixes #23206
- - - - -
ab9cd52d by Sylvain Henry at 2023-04-03T08:15:21-04:00
ghc-heap: remove wrong Addr# coercion (#23181)
Conversion from Addr# to I# isn't correct with the JS backend.
- - - - -
2b2afff3 by Matthew Pickering at 2023-04-03T08:15:58-04:00
hadrian: Update bootstrap plans for 9.2.6, 9.2.7, 9.4.4, 9.4.5, 9.6.1
Also fixes the ./generate_bootstrap_plans script which was recently
broken
We can hopefully drop the 9.2 plans soon but they still work so kept
them around for now.
- - - - -
c2605e25 by Matthew Pickering at 2023-04-03T08:15:58-04:00
ci: Add job to test 9.6 bootstrapping
- - - - -
53e4d513 by Krzysztof Gogolewski at 2023-04-03T08:16:35-04:00
hadrian: Improve option parsing
Several options in Hadrian had their argument marked as optional
(`OptArg`), but if the argument wasn't there they were just giving an
error. It's more idiomatic to mark the argument as required instead;
the code uses less Maybes, the parser can enforce that the argument
is present, --help gives better output.
- - - - -
a8e36892 by Sylvain Henry at 2023-04-03T08:17:16-04:00
JS: fix issues with FD api support
- Add missing implementations for fcntl_read/write/lock
- Fix fdGetMode
These were found while implementing TH in !9779. These functions must be
used somehow by the external interpreter code.
- - - - -
8b092910 by Haskell-mouse at 2023-04-03T19:31:26-04:00
Convert diagnostics in GHC.Rename.HsType to proper TcRnMessage
I've turned all occurrences of TcRnUnknownMessage in GHC.Rename.HsType
module into a proper TcRnMessage.
Instead, these TcRnMessage messages were introduced:
TcRnDataKindsError
TcRnUnusedQuantifiedTypeVar
TcRnIllegalKindSignature
TcRnUnexpectedPatSigType
TcRnSectionPrecedenceError
TcRnPrecedenceParsingError
TcRnIllegalKind
TcRnNegativeNumTypeLiteral
TcRnUnexpectedKindVar
TcRnBindMultipleVariables
TcRnBindVarAlreadyInScope
- - - - -
220a7a48 by Krzysztof Gogolewski at 2023-04-03T19:32:02-04:00
Fixes around unsafeCoerce#
1. `unsafeCoerce#` was documented in `GHC.Prim`. But since the overhaul
in 74ad75e87317, `unsafeCoerce#` is no longer defined there.
I've combined the documentation in `GHC.Prim` with the `Unsafe.Coerce` module.
2. The documentation of `unsafeCoerce#` stated that you should not
cast a function to an algebraic type, even if you later cast it back
before applying it. But ghci was doing that type of cast, as can be seen
with 'ghci -ddump-ds' and typing 'x = not'. I've changed it to use Any
following the documentation.
- - - - -
9095e297 by Matthew Craven at 2023-04-04T01:04:10-04:00
Add a few more memcpy-ish primops
* copyMutableByteArrayNonOverlapping#
* copyAddrToAddr#
* copyAddrToAddrNonOverlapping#
* setAddrRange#
The implementations of copyBytes, moveBytes, and fillBytes
in base:Foreign.Marshal.Utils now use these new primops,
which can cause us to work a bit harder generating code for them,
resulting in the metric increase in T21839c observed by CI on
some architectures. But in exchange, we get better code!
Metric Increase:
T21839c
- - - - -
f7da530c by Matthew Craven at 2023-04-04T01:04:10-04:00
StgToCmm: Upgrade -fcheck-prim-bounds behavior
Fixes #21054. Additionally, we can now check for range overlap
when generating Cmm for primops that use memcpy internally.
- - - - -
cd00e321 by sheaf at 2023-04-04T01:04:50-04:00
Relax assertion in varToRecFieldOcc
When using Template Haskell, it is possible to re-parent a field OccName
belonging to one data constructor to another data constructor. The
lsp-types package did this in order to "extend" a data constructor
with additional fields.
This ran into an assertion in 'varToRecFieldOcc'. This assertion
can simply be relaxed, as the resulting splices are perfectly sound.
Fixes #23220
- - - - -
eed0d930 by Sylvain Henry at 2023-04-04T11:09:15-04:00
GHCi.RemoteTypes: fix doc and avoid unsafeCoerce (#23201)
- - - - -
071139c3 by Ryan Scott at 2023-04-04T11:09:51-04:00
Make INLINE pragmas for pattern synonyms work with TH
Previously, the code for converting `INLINE <name>` pragmas from TH splices
used `vNameN`, which assumed that `<name>` must live in the variable namespace.
Pattern synonyms, on the other hand, live in the constructor namespace. I've
fixed the issue by switching to `vcNameN` instead, which works for both the
variable and constructor namespaces.
Fixes #23203.
- - - - -
7c16f3be by Krzysztof Gogolewski at 2023-04-04T17:13:00-04:00
Fix unification with oversaturated type families
unify_ty was incorrectly saying that F x y ~ T x are surely apart,
where F x y is an oversaturated type family and T x is a tyconapp.
As a result, the simplifier dropped a live case alternative (#23134).
- - - - -
c165f079 by sheaf at 2023-04-04T17:13:40-04:00
Add testcase for #23192
This issue around solving of constraints arising from superclass
expansion using other constraints also borned from superclass expansion
was the topic of commit aed1974e. That commit made sure we don't emit
a "redundant constraint" warning in a situation in which removing the
constraint would cause errors.
Fixes #23192
- - - - -
d1bb16ed by Ben Gamari at 2023-04-06T03:40:45-04:00
nonmoving: Disable slop-zeroing
As noted in #23170, the nonmoving GC can race with a mutator zeroing the
slop of an updated thunk (in much the same way that two mutators would
race). Consequently, we must disable slop-zeroing when the nonmoving GC
is in use.
Closes #23170
- - - - -
04b80850 by Brandon Chinn at 2023-04-06T03:41:21-04:00
Fix reverse flag for -Wunsupported-llvm-version
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0c990e13 by Pierre Le Marre at 2023-04-06T10:16:29+00:00
Add release note for GHC.Unicode refactor in base-4.18.
Also merge CLC proposal 130 in base-4.19 with CLC proposal 59 in
base-4.18 and add proper release date.
- - - - -
cbbfb283 by Alex Dixon at 2023-04-07T18:27:45-04:00
Improve documentation for ($) (#22963)
- - - - -
5193c2b0 by Alex Dixon at 2023-04-07T18:27:45-04:00
Remove trailing whitespace from ($) commentary
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b384523b by Sebastian Graf at 2023-04-07T18:27:45-04:00
Adjust wording wrt representation polymorphism of ($)
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6a788f0a by Torsten Schmits at 2023-04-07T22:29:28-04:00
Add structured error messages for GHC.Tc.TyCl.Utils
Tracking ticket: #20117
MR: !10251
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
3ba77b36 by sheaf at 2023-04-07T22:30:07-04:00
Renamer: don't call addUsedGRE on an exact Name
When looking up a record field in GHC.Rename.Env.lookupRecFieldOcc,
we could end up calling addUsedGRE on an exact Name, which would then
lead to a panic in the bestImport function: it would be incapable of
processing a GRE which is not local but also not brought into scope
by any imports (as it is referred to by its unique instead).
Fixes #23240
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bc4795d2 by Krzysztof Gogolewski at 2023-04-11T19:24:54-04:00
Add support for -debug in the testsuite
Confusingly, GhcDebugged referred to GhcDebugAssertions.
- - - - -
b7474b57 by Krzysztof Gogolewski at 2023-04-11T19:24:54-04:00
Add missing cases in -Di prettyprinter
Fixes #23142
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6c392616 by Cheng Shao at 2023-04-11T19:25:31-04:00
compiler: make WasmCodeGenM an instance of MonadUnique
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05d26a65 by Cheng Shao at 2023-04-11T19:25:31-04:00
compiler: apply cmm node-splitting for wasm backend
This patch applies cmm node-splitting for wasm32 NCG, which is
required when handling irreducible CFGs. Fixes #23237.
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f1892cc0 by Andrew Lelechenko at 2023-04-11T19:26:09-04:00
Set base 'maintainer' field to CLC
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ecf22da3 by Simon Peyton Jones at 2023-04-11T19:26:45-04:00
Clarify a couple of Notes about 'nospec'
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ebd8918b by Oleg Grenrus at 2023-04-12T12:32:57-04:00
Allow generation of TTH syntax with TH
In other words allow generation of typed splices and brackets with
Untyped Template Haskell.
That is useful in cases where a library is build with TTH in mind,
but we still want to generate some auxiliary declarations,
where TTH cannot help us, but untyped TH can.
Such example is e.g. `staged-sop` which works with TTH,
but we would like to derive `Generic` declarations with TH.
An alternative approach is to use `unsafeCodeCoerce`, but then the
derived `Generic` instances would be type-checked only at use sites,
i.e. much later. Also `-ddump-splices` output is quite ugly:
user-written instances would use TTH brackets, not `unsafeCodeCoerce`.
This commit doesn't allow generating of untyped template splices
and brackets with untyped TH, as I don't know why one would want to do
that (instead of merging the splices, e.g.)
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690d0225 by Rodrigo Mesquita at 2023-04-12T12:33:33-04:00
Add regression test for #23229
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59321879 by Sylvain Henry at 2023-04-13T08:50:33-04:00
Add quotRem rules (#22152)
case quotRemInt# x y of
(# q, _ #) -> body
====>
case quotInt# x y of
q -> body
case quotRemInt# x y of
(# _, r #) -> body
====>
case remInt# x y of
r -> body
- - - - -
4dd02122 by Sylvain Henry at 2023-04-13T08:50:33-04:00
Add quot folding rule (#22152)
(x / l1) / l2
l1 and l2 /= 0
l1*l2 doesn't overflow
==> x / (l1 * l2)
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1148ac72 by Sylvain Henry at 2023-04-13T08:50:33-04:00
Make Int64/Word64 division ok for speculation too.
Only when the divisor is definitely non-zero.
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8af401cc by Sylvain Henry at 2023-04-13T08:50:33-04:00
Make WordQuotRem2Op ok-for-speculation too
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27d2978e by Josh Meredith at 2023-04-13T08:51:09-04:00
Base/JS: GHC.JS.Foreign.Callback module (issue 23126)
* Add the Callback module for "exporting" Haskell functions
to be available to plain JavaScript code
* Fix some primitives defined in GHC.JS.Prim
* Add a JavaScript section to the user guide with instructions
on how to use the JavaScript FFI, building up to using Callbacks
to interact with the browser
* Add tests for the JavaScript FFI and Callbacks
- - - - -
a34aa8da by Adam Sandberg Ericsson at 2023-04-14T04:17:52-04:00
rts: improve memory ordering and add some comments in the StablePtr implementation
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d7a768a4 by Matthew Pickering at 2023-04-14T04:18:28-04:00
docs: Generate docs/index.html with version number
* Generate docs/index.html to include the version of the ghc library
* This also fixes the packageVersions interpolations which were
- Missing an interpolation for `LIBRARY_ghc_VERSION`
- Double quoting the version so that "9.7" was being inserted.
Fixes #23121
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d48fbfea by Simon Peyton Jones at 2023-04-14T04:19:05-04:00
Stop if type constructors have kind errors
Otherwise we get knock-on errors, such as #23252.
This makes GHC fail a bit sooner, and I have not attempted to add
recovery code, to add a fake TyCon place of the erroneous one,
in an attempt to get more type errors in one pass. We could
do that (perhaps) if there was a call for it.
- - - - -
2371d6b2 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Major refactor in the handling of equality constraints
This MR substantially refactors the way in which the constraint
solver deals with equality constraints. The big thing is:
* Intead of a pipeline in which we /first/ canonicalise and /then/
interact (the latter including performing unification) the two steps
are more closely integreated into one. That avoids the current
rather indirect communication between the two steps.
The proximate cause for this refactoring is fixing #22194, which involve
solving [W] alpha[2] ~ Maybe (F beta[4])
by doing this:
alpha[2] := Maybe delta[2]
[W] delta[2] ~ F beta[4]
That is, we don't promote beta[4]! This is very like introducing a cycle
breaker, and was very awkward to do before, but now it is all nice.
See GHC.Tc.Utils.Unify Note [Promotion and level-checking] and
Note [Family applications in canonical constraints].
The big change is this:
* Several canonicalisation checks (occurs-check, cycle-breaking,
checking for concreteness) are combined into one new function:
GHC.Tc.Utils.Unify.checkTyEqRhs
This function is controlled by `TyEqFlags`, which says what to do
for foralls, type families etc.
* `canEqCanLHSFinish` now sees if unification is possible, and if so,
actually does it: see `canEqCanLHSFinish_try_unification`.
There are loads of smaller changes:
* The on-the-fly unifier `GHC.Tc.Utils.Unify.unifyType` has a
cheap-and-cheerful version of `checkTyEqRhs`, called
`simpleUnifyCheck`. If `simpleUnifyCheck` succeeds, it can unify,
otherwise it defers by emitting a constraint. This is simpler than
before.
* I simplified the swapping code in `GHC.Tc.Solver.Equality.canEqCanLHS`.
Especially the nasty stuff involving `swap_for_occurs` and
`canEqTyVarFunEq`. Much nicer now. See
Note [Orienting TyVarLHS/TyFamLHS]
Note [Orienting TyFamLHS/TyFamLHS]
* Added `cteSkolemOccurs`, `cteConcrete`, and `cteCoercionHole` to the
problems that can be discovered by `checkTyEqRhs`.
* I fixed #23199 `pickQuantifiablePreds`, which actually allows GHC to
to accept both cases in #22194 rather than rejecting both.
Yet smaller:
* Added a `synIsConcrete` flag to `SynonymTyCon` (alongside `synIsFamFree`)
to reduce the need for synonym expansion when checking concreteness.
Use it in `isConcreteType`.
* Renamed `isConcrete` to `isConcreteType`
* Defined `GHC.Core.TyCo.FVs.isInjectiveInType` as a more efficient
way to find if a particular type variable is used injectively than
finding all the injective variables. It is called in
`GHC.Tc.Utils.Unify.definitely_poly`, which in turn is used quite a
lot.
* Moved `rewriterView` to `GHC.Core.Type`, so we can use it from the
constraint solver.
Fixes #22194, #23199
Compile times decrease by an average of 0.1%; but there is a 7.4%
drop in compiler allocation on T15703.
Metric Decrease:
T15703
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99b2734b by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Add some documentation about redundant constraints
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3f2d0eb8 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Improve partial signatures
This MR fixes #23223. The changes are in two places:
* GHC.Tc.Bind.checkMonomorphismRestriction
See the new `Note [When the MR applies]`
We now no longer stupidly attempt to apply the MR when the user
specifies a context, e.g. f :: Eq a => _ -> _
* GHC.Tc.Solver.decideQuantification
See rewritten `Note [Constraints in partial type signatures]`
Fixing this bug apparently breaks three tests:
* partial-sigs/should_compile/T11192
* partial-sigs/should_fail/Defaulting1MROff
* partial-sigs/should_fail/T11122
However they are all symptoms of #23232, so I'm marking them as
expect_broken(23232).
I feel happy about this MR. Nice.
- - - - -
23e2a8a0 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Make approximateWC a bit cleverer
This MR fixes #23224: making approximateWC more clever
See the long `Note [ApproximateWC]` in GHC.Tc.Solver
All this is delicate and ad-hoc -- but it /has/ to be: we are
talking about inferring a type for a binding in the presence of
GADTs, type families and whatnot: known difficult territory.
We just try as hard as we can.
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2c040246 by Matthew Pickering at 2023-04-15T00:57:14-04:00
docs: Update template-haskell docs to use Code Q a rather than Q (TExp a)
Since GHC Proposal #195, the type of [|| ... ||] has been Code Q a
rather than Q (TExp a). The documentation in the `template-haskell`
library wasn't updated to reflect this change.
Fixes #23148
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0da18eb7 by Krzysztof Gogolewski at 2023-04-15T14:35:53+02:00
Show an error when we cannot default a concrete tyvar
Fixes #23153
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bad2f8b8 by sheaf at 2023-04-15T15:14:36+02:00
Handle ConcreteTvs in inferResultToType
inferResultToType was discarding the ir_frr information, which meant
some metavariables ended up being MetaTvs instead of ConcreteTvs.
This function now creates new ConcreteTvs as necessary, instead of
always creating MetaTvs.
Fixes #23154
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3b0ea480 by Simon Peyton Jones at 2023-04-16T18:12:20-04:00
Transfer DFunId_ness onto specialised bindings
Whether a binding is a DFunId or not has consequences for the `-fdicts-strict`
flag, essentially if we are doing demand analysis for a DFunId then `-fdicts-strict` does
not apply because the constraint solver can create recursive groups of dictionaries.
In #22549 this was fixed for the "normal" case, see
Note [Do not strictify the argument dictionaries of a dfun].
However the loop still existed if the DFunId was being specialised.
The problem was that the specialiser would specialise a DFunId and
turn it into a VanillaId and so the demand analyser didn't know to
apply special treatment to the binding anymore and the whole recursive
group was optimised to bottom.
The solution is to transfer over the DFunId-ness of the binding in the specialiser so
that the demand analyser knows not to apply the `-fstrict-dicts`.
Fixes #22549
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a1371ebb by Oleg Grenrus at 2023-04-16T18:12:59-04:00
Add import lists to few GHC.Driver.Session imports
Related to https://gitlab.haskell.org/ghc/ghc/-/issues/23261.
There are a lot of GHC.Driver.Session which only use DynFlags,
but not the parsing code.
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51479ceb by Matthew Pickering at 2023-04-17T08:08:48-04:00
Account for special GHC.Prim import in warnUnusedPackages
The GHC.Prim import is treated quite specially primarily because there
isn't an interface file for GHC.Prim. Therefore we record separately in
the ModSummary if it's imported or not so we don't go looking for it.
This logic hasn't made it's way to `-Wunused-packages` so if you
imported GHC.Prim then the warning would complain you didn't use
`-package ghc-prim`.
Fixes #23212
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1532a8b2 by Simon Peyton Jones at 2023-04-17T08:09:24-04:00
Add regression test for #23199
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0158c5f1 by Ryan Scott at 2023-04-17T18:43:27-04:00
validDerivPred: Reject exotic constraints in IrredPreds
This brings the `IrredPred` case in sync with the treatment of `ClassPred`s as
described in `Note [Valid 'deriving' predicate]` in `GHC.Tc.Validity`. Namely,
we should reject `IrredPred`s that are inferred from `deriving` clauses whose
arguments contain other type constructors, as described in `(VD2) Reject exotic
constraints` of that Note. This has the nice property that `deriving` clauses
whose inferred instance context mention `TypeError` will now emit the type
error in the resulting error message, which better matches existing intuitions
about how `TypeError` should work.
While I was in town, I noticed that much of `Note [Valid 'deriving' predicate]`
was duplicated in a separate `Note [Exotic derived instance contexts]` in
`GHC.Tc.Deriv.Infer`. I decided to fold the latter Note into the former so that
there is a single authority on describing the conditions under which an
inferred `deriving` constraint can be considered valid.
This changes the behavior of `deriving` in a way that existing code might
break, so I have made a mention of this in the GHC User's Guide. It seems very,
very unlikely that much code is relying on this strange behavior, however, and
even if there is, there is a clear, backwards-compatible migration path using
`StandaloneDeriving`.
Fixes #22696.
- - - - -
10364818 by Krzysztof Gogolewski at 2023-04-17T18:44:03-04:00
Misc cleanup
- Use dedicated list functions
- Make cloneBndrs and cloneRecIdBndrs monadic
- Fix invalid haddock comments in libraries/base
- - - - -
5e1d33d7 by Matthew Pickering at 2023-04-18T10:31:02-04:00
Convert interface file loading errors into proper diagnostics
This patch converts all the errors to do with loading interface files
into proper structured diagnostics.
* DriverMessage: Sometimes in the driver we attempt to load an interface
file so we embed the IfaceMessage into the DriverMessage.
* TcRnMessage: Most the time we are loading interface files during
typechecking, so we embed the IfaceMessage
This patch also removes the TcRnInterfaceLookupError constructor which
is superceded by the IfaceMessage, which is now structured compared to
just storing an SDoc before.
- - - - -
df1a5811 by sheaf at 2023-04-18T10:31:43-04:00
Don't panic in ltPatersonSize
The function GHC.Tc.Utils.TcType.ltPatersonSize would panic when it
encountered a type family on the RHS, as usually these are not allowed
(type families are not allowed on the RHS of class instances or of
quantified constraints). However, it is possible to still encounter
type families on the RHS after doing a bit of constraint solving, as
seen in test case T23171. This could trigger the panic in the call to
ltPatersonSize in GHC.Tc.Solver.Canonical.mk_strict_superclasses, which
is involved in avoiding loopy superclass constraints.
This patch simply changes ltPatersonSize to return "I don't know, because
there's a type family involved" in these cases.
Fixes #23171
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d442ac05 by Sylvain Henry at 2023-04-19T20:04:35-04:00
JS: fix thread-related primops
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7a96f90b by Bryan Richter at 2023-04-19T20:05:11-04:00
CI: Disable abi-test-nightly
See #23269
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ab6c1d29 by Sylvain Henry at 2023-04-19T20:05:50-04:00
Testsuite: don't use obsolescent egrep (#22351)
Recent egrep displays the following message, breaking golden tests:
egrep: warning: egrep is obsolescent; using grep -E
Switch to using "grep -E" instead
- - - - -
f15b0ce5 by Matthew Pickering at 2023-04-20T11:01:06-04:00
hadrian: Pass haddock file arguments in a response file
In !10119 CI was failing on windows because the command line was too
long. We can mitigate this by passing the file arguments to haddock in a
response file.
We can't easily pass all the arguments in a response file because the
`+RTS` arguments can't be placed in the response file.
Fixes #23273
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7012ec2f by tocic at 2023-04-20T11:01:42-04:00
Fix doc typo in GHC.Read.readList
- - - - -
5c873124 by sheaf at 2023-04-20T18:33:34-04:00
Implement -jsem: parallelism controlled by semaphores
See https://github.com/ghc-proposals/ghc-proposals/pull/540/ for a
complete description for the motivation for this feature.
The `-jsem` option allows a build tool to pass a semaphore to GHC which
GHC can use in order to control how much parallelism it requests.
GHC itself acts as a client in the GHC jobserver protocol.
```
GHC Jobserver Protocol
~~~~~~~~~~~~~~~~~~~~~~
This proposal introduces the GHC Jobserver Protocol. This protocol allows
a server to dynamically invoke many instances of a client process,
while restricting all of those instances to use no more than <n> capabilities.
This is achieved by coordination over a system semaphore (either a POSIX
semaphore [6]_ in the case of Linux and Darwin, or a Win32 semaphore [7]_
in the case of Windows platforms).
There are two kinds of participants in the GHC Jobserver protocol:
- The *jobserver* creates a system semaphore with a certain number of
available tokens.
Each time the jobserver wants to spawn a new jobclient subprocess, it **must**
first acquire a single token from the semaphore, before spawning
the subprocess. This token **must** be released once the subprocess terminates.
Once work is finished, the jobserver **must** destroy the semaphore it created.
- A *jobclient* is a subprocess spawned by the jobserver or another jobclient.
Each jobclient starts with one available token (its *implicit token*,
which was acquired by the parent which spawned it), and can request more
tokens through the Jobserver Protocol by waiting on the semaphore.
Each time a jobclient wants to spawn a new jobclient subprocess, it **must**
pass on a single token to the child jobclient. This token can either be the
jobclient's implicit token, or another token which the jobclient acquired
from the semaphore.
Each jobclient **must** release exactly as many tokens as it has acquired from
the semaphore (this does not include the implicit tokens).
```
Build tools such as cabal act as jobservers in the protocol and are
responsibile for correctly creating, cleaning up and managing the
semaphore.
Adds a new submodule (semaphore-compat) for managing and interacting
with semaphores in a cross-platform way.
Fixes #19349
- - - - -
52d3e9b4 by Ben Gamari at 2023-04-20T18:34:11-04:00
rts: Initialize Array# header in listThreads#
Previously the implementation of listThreads# failed to initialize the
header of the created array, leading to various nastiness.
Fixes #23071
- - - - -
1db30fe1 by Ben Gamari at 2023-04-20T18:34:11-04:00
testsuite: Add test for #23071
- - - - -
dae514f9 by tocic at 2023-04-21T13:31:21-04:00
Fix doc typos in libraries/base/GHC
- - - - -
113e21d7 by Sylvain Henry at 2023-04-21T13:32:01-04:00
Testsuite: replace some js_broken/js_skip predicates with req_c
Using req_c is more precise.
- - - - -
038bb031 by Krzysztof Gogolewski at 2023-04-21T18:03:04-04:00
Minor doc fixes
- Add docs/index.html to .gitignore.
It is created by ./hadrian/build docs, and it was the only file
in Hadrian's templateRules not present in .gitignore.
- Mention that MultiWayIf supports non-boolean guards
- Remove documentation of optdll - removed in 2007, 763daed95
- Fix markdown syntax
- - - - -
e826cdb2 by amesgen at 2023-04-21T18:03:44-04:00
User's guide: DeepSubsumption is implied by Haskell{98,2010}
- - - - -
499a1c20 by PHO at 2023-04-23T13:39:32-04:00
Implement executablePath for Solaris and make getBaseDir less platform-dependent
Use base-4.17 executablePath when possible, and fall back on
getExecutablePath when it's not available. The sole reason why getBaseDir
had #ifdef's was apparently that getExecutablePath wasn't reliable, and we
could reduce the number of CPP conditionals by making use of
executablePath instead.
Also export executablePath on js_HOST_ARCH.
- - - - -
97a6f7bc by tocic at 2023-04-23T13:40:08-04:00
Fix doc typos in libraries/base
- - - - -
787c6e8c by Ben Gamari at 2023-04-24T12:19:06-04:00
testsuite/T20137: Avoid impl.-defined behavior
Previously we would cast pointers to uint64_t. However, implementations
are allowed to either zero- or sign-extend such casts. Instead cast to
uintptr_t to avoid this.
Fixes #23247.
- - - - -
87095f6a by Cheng Shao at 2023-04-24T12:19:44-04:00
rts: always build 64-bit atomic ops
This patch does a few things:
- Always build 64-bit atomic ops in rts/ghc-prim, even on 32-bit
platforms
- Remove legacy "64bit" cabal flag of rts package
- Fix hs_xchg64 function prototype for 32-bit platforms
- Fix AtomicFetch test for wasm32
- - - - -
2685a12d by Cheng Shao at 2023-04-24T12:20:21-04:00
compiler: don't install signal handlers when the host platform doesn't have signals
Previously, large parts of GHC API will transitively invoke
withSignalHandlers, which doesn't work on host platforms without
signal functionality at all (e.g. wasm32-wasi). By making
withSignalHandlers a no-op on those platforms, we can make more parts
of GHC API work out of the box when signals aren't supported.
- - - - -
1338b7a3 by Cheng Shao at 2023-04-24T16:21:30-04:00
hadrian: fix non-ghc program paths passed to testsuite driver when testing cross GHC
- - - - -
1a10f556 by Andrew Lelechenko at 2023-04-24T16:22:09-04:00
Add since pragma to Data.Functor.unzip
- - - - -
0da9e882 by Soham Chowdhury at 2023-04-25T00:15:22-04:00
More informative errors for bad imports (#21826)
- - - - -
ebd5b078 by Josh Meredith at 2023-04-25T00:15:58-04:00
JS/base: provide implementation for mkdir (issue 22374)
- - - - -
8f656188 by Josh Meredith at 2023-04-25T18:12:38-04:00
JS: Fix h$base_access implementation (issue 22576)
- - - - -
74c55712 by Andrei Borzenkov at 2023-04-25T18:13:19-04:00
Give more guarntees about ImplicitParams (#23289)
- Added new section in the GHC user's guide that legends behavior of
nested implicit parameter bindings in these two cases:
let ?f = 1 in let ?f = 2 in ?f
and
data T where MkT :: (?f :: Int) => T
f :: T -> T -> Int
f MkT MkT = ?f
- Added new test case to examine this behavior.
- - - - -
c30ac25f by Sebastian Graf at 2023-04-26T14:50:51-04:00
DmdAnal: Unleash demand signatures of free RULE and unfolding binders (#23208)
In #23208 we observed that the demand signature of a binder occuring in a RULE
wasn't unleashed, leading to a transitively used binder being discarded as
absent. The solution was to use the same code path that we already use for
handling exported bindings.
See the changes to `Note [Absence analysis for stable unfoldings and RULES]`
for more details.
I took the chance to factor out the old notion of a `PlusDmdArg` (a pair of a
`VarEnv Demand` and a `Divergence`) into `DmdEnv`, which fits nicely into our
existing framework. As a result, I had to touch quite a few places in the code.
This refactoring exposed a few small bugs around correct handling of bottoming
demand environments. As a result, some strictness signatures now mention uniques
that weren't there before which caused test output changes to T13143, T19969 and
T22112. But these tests compared whole -ddump-simpl listings which is a very
fragile thing to begin with. I changed what exactly they test for based on the
symptoms in the corresponding issues.
There is a single regression in T18894 because we are more conservative around
stable unfoldings now. Unfortunately it is not easily fixed; let's wait until
there is a concrete motivation before invest more time.
Fixes #23208.
- - - - -
77f506b8 by Josh Meredith at 2023-04-26T14:51:28-04:00
Refactor GenStgRhs to include the Type in both constructors (#23280, #22576, #22364)
Carry the actual type of an expression through the PreStgRhs and into GenStgRhs
for use in later stages. Currently this is used in the JavaScript backend to fix
some tests from the above mentioned issues: EtaExpandLevPoly, RepPolyWrappedVar2,
T13822, T14749.
- - - - -
052e2bb6 by Alan Zimmerman at 2023-04-26T14:52:05-04:00
EPA: Use ExplicitBraces only in HsModule
!9018 brought in exact print annotations in LayoutInfo for open and
close braces at the top level.
But it retained them in the HsModule annotations too.
Remove the originals, so exact printing uses LayoutInfo
- - - - -
d5c4629b by Cheng Shao at 2023-04-27T16:00:35-04:00
ci: update ci.sh to actually run the entire testsuite for wasm backend
For the time being, we still need to use in-tree mode and can't test
the bindist yet.
- - - - -
533d075e by Cheng Shao at 2023-04-27T16:00:35-04:00
ci: additional wasm32 manual jobs in validate pipelines
This patch enables bignum native & unregisterised wasm32 jobs as
manual jobs in validate pipelines, which can be useful to prevent
breakage when working on wasm32 related patches.
- - - - -
b5f00811 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: fix cross prefix stripping
This patch fixes cross prefix stripping in the testsuite driver. The
normalization logic used to only handle prefixes of the triple form
<arch>-<vendor>-<os>, now it's relaxed to allow any number of tokens
in the prefix tuple, so the cross prefix stripping logic would work
when ghc is configured with something like --target=wasm32-wasi.
- - - - -
6f511c36 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: include target exe extension in heap profile filenames
This patch fixes hp2ps related framework failures when testing the
wasm backend by including target exe extension in heap profile
filenames.
- - - - -
e6416b10 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: exclude ghci ways if no rts linker is present
This patch implements logic to automatically exclude ghci ways when
there is no rts linker. It's way better than having to annotate
individual test cases.
- - - - -
791cce64 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: fix permission bits in copy_files
When the testsuite driver copy files instead of symlinking them, it
should also copy the permission bits, otherwise there'll be permission
denied errors. Also, enforce file copying when testing wasm32, since
wasmtime doesn't handle host symlinks quite well
(https://github.com/bytecodealliance/wasmtime/issues/6227)
- - - - -
aa6afe8a by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: add the req_ghc_with_threaded_rts predicate
This patch adds the req_ghc_with_threaded_rts predicate to the
testsuite to assert the platform has threaded RTS, and mark some tests
as req_ghc_with_threaded_rts. Also makes ghc_with_threaded_rts a
config field instead of a global variable.
- - - - -
ce580426 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: add the req_process predicate
This patch adds the req_process predicate to the testsuite to assert
the platform has a process model, also marking tests that involve
spawning processes as req_process. Also bumps hpc & process submodule.
- - - - -
cb933665 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: add the req_host_target_ghc predicate
This patch adds the req_host_target_ghc predicate to the testsuite to
assert the ghc compiler being tested can compile both host/target
code. When testing cross GHCs this is not supported yet, but it may
change in the future.
- - - - -
b174a110 by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: add missing annotations for some tests
This patch adds missing annotations (req_th, req_dynamic_lib_support,
req_rts_linker) to some tests. They were discovered when testing
wasm32, though it's better to be explicit about what features they
require, rather than simply adding when(arch('wasm32'), skip).
- - - - -
bd2bfdec by Cheng Shao at 2023-04-27T16:00:35-04:00
testsuite: wasm32-specific fixes
This patch includes all wasm32-specific testsuite fixes.
- - - - -
4eaf2c2a by Josh Meredith at 2023-04-27T16:01:11-04:00
JS: change GHC.JS.Transform.identsS/E/V to take a saturated IR (#23304)
- - - - -
57277662 by sheaf at 2023-04-29T20:23:06+02:00
Add the Unsatisfiable class
This commit implements GHC proposal #433, adding the Unsatisfiable
class to the GHC.TypeError module. This provides an alternative to
TypeError for which error reporting is more predictable: we report it
when we are reporting unsolved Wanted constraints.
Fixes #14983 #16249 #16906 #18310 #20835
- - - - -
00a8a5ff by Torsten Schmits at 2023-04-30T03:45:09-04:00
Add structured error messages for GHC.Rename.Names
Tracking ticket: #20115
MR: !10336
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
931c8d82 by Ben Orchard at 2023-05-03T20:16:18-04:00
Add sized primitive literal syntax
Adds a new LANGUAGE pragma ExtendedLiterals, which enables defining
unboxed numeric literals such as `0xFF#Word8 :: Word8#`.
Implements GHC proposal 0451:
https://github.com/ghc-proposals/ghc-proposals/blob/b384a538b34f79d18a02014…
Fixes #21422.
Bumps haddock submodule.
Co-authored-by: Krzysztof Gogolewski <krzysztof.gogolewski(a)tweag.io>
- - - - -
f3460845 by Andrew Lelechenko at 2023-05-03T20:16:57-04:00
Document instances of Double
- - - - -
1e9caa1a by Sylvain Henry at 2023-05-03T20:17:37-04:00
Bump Cabal submodule (#22356)
- - - - -
4eafb52a by sheaf at 2023-05-03T20:18:16-04:00
Don't forget to check the parent in an export list
Commit 3f374399 introduced a bug which caused us to forget to include
the parent of an export item of the form T(..) (that is, IEThingAll)
when checking for duplicate exports.
Fixes #23318
- - - - -
8fde4ac8 by amesgen at 2023-05-03T20:18:57-04:00
Fix unlit path in cross bindists
- - - - -
8cc9a534 by Matthew Pickering at 2023-05-04T14:58:14-04:00
hadrian: Flavour: Change args -> extraArgs
Previously in a flavour definition you could override all the flags
which were passed to GHC. This causes issues when needed to compute a
package hash because we need to know what these extra arguments are
going to be before computing the hash. The solution is to modify flavour
so that the arguments you pass here are just extra ones rather than all
the arguments that you need to compile something.
This makes things work more like how cabal.project files work when you
give extra arguments to a package and also means that flavour
transformers correctly affect the hash.
- - - - -
3fdb18f8 by romes at 2023-05-04T14:58:14-04:00
Hardwire a better unit-id for ghc
Previously, the unit-id of ghc-the-library was fixed as `ghc`.
This was done primarily because the compiler must know the unit-id of
some packages (including ghc) a-priori to define wired-in names.
However, as seen in #20742, a reinstallable `ghc` whose unit-id is fixed
to `ghc` might result in subtle bugs when different ghc's interact.
A good example of this is having GHC_A load a plugin compiled by GHC_B,
where GHC_A and GHC_B are linked to ghc-libraries that are ABI
incompatible. Without a distinction between the unit-id of the ghc library
GHC_A is linked against and the ghc library the plugin it is loading was
compiled against, we can't check compatibility.
This patch gives a slightly better unit-id to ghc (ghc-version) by
(1) Not setting -this-unit-id to ghc, but rather to the new unit-id (modulo stage0)
(2) Adding a definition to `GHC.Settings.Config` whose value is the new unit-id.
(2.1) `GHC.Settings.Config` is generated by Hadrian
(2.2) and also by cabal through `compiler/Setup.hs`
This unit-id definition is imported by `GHC.Unit.Types` and used to
set the wired-in unit-id of "ghc", which was previously fixed to "ghc"
The commits following this one will improve the unit-id with a
cabal-style package hash and check compatibility when loading plugins.
Note that we also ensure that ghc's unit key matches unit id both when
hadrian or cabal builds ghc, and in this way we no longer need to add
`ghc` to the WiringMap.
- - - - -
6689c9c6 by romes at 2023-05-04T14:58:14-04:00
Validate compatibility of ghcs when loading plugins
Ensure, when loading plugins, that the ghc the plugin depends on is the
ghc loading the plugin -- otherwise fail to load the plugin.
Progress towards #20742.
- - - - -
db4be339 by romes at 2023-05-04T14:58:14-04:00
Add hashes to unit-ids created by hadrian
This commit adds support for computing an inputs hash for packages
compiled by hadrian. The result is that ABI incompatible packages should
be given different hashes and therefore be distinct in a cabal store.
Hashing is enabled by the `--flag`, and is off by default as the hash
contains a hash of the source files. We enable it when we produce
release builds so that the artifacts we distribute have the right unit
ids.
- - - - -
944a9b94 by Matthew Pickering at 2023-05-04T14:58:14-04:00
Use hash-unit-ids in release jobs
Includes fix upload_ghc_libs glob
- - - - -
116d7312 by Josh Meredith at 2023-05-04T14:58:51-04:00
JS: fix bounds checking (Issue 23123)
* For ByteArray-based bounds-checking, the JavaScript backend must use the
`len` field, instead of the inbuild JavaScript `length` field.
* Range-based operations must also check both the start and end of the range
for bounds
* All indicies are valid for ranges of size zero, since they are essentially no-ops
* For cases of ByteArray accesses (e.g. read as Int), the end index is
(i * sizeof(type) + sizeof(type) - 1), while the previous implementation
uses (i + sizeof(type) - 1). In the Int32 example, this is (i * 4 + 3)
* IndexByteArrayOp_Word8As* primitives use byte array indicies (unlike
the previous point), but now check both start and end indicies
* Byte array copies now check if the arrays are the same by identity and
then if the ranges overlap.
- - - - -
2d5c1dde by Sylvain Henry at 2023-05-04T14:58:51-04:00
Fix remaining issues with bound checking (#23123)
While fixing these I've also changed the way we store addresses into
ByteArray#. Addr# are composed of two parts: a JavaScript array and an
offset (32-bit number).
Suppose we want to store an Addr# in a ByteArray# foo at offset i.
Before this patch, we were storing both fields as a tuple in the "arr"
array field:
foo.arr[i] = [addr_arr, addr_offset];
Now we only store the array part in the "arr" field and the offset
directly in the array:
foo.dv.setInt32(i, addr_offset):
foo.arr[i] = addr_arr;
It avoids wasting space for the tuple.
- - - - -
98c5ee45 by Luite Stegeman at 2023-05-04T14:59:31-04:00
JavaScript: Correct arguments to h$appendToHsStringA
fixes #23278
- - - - -
ca611447 by Josh Meredith at 2023-05-04T15:00:07-04:00
base/encoding: add an allocations performance test (#22946)
- - - - -
e3ddf58d by Krzysztof Gogolewski at 2023-05-04T15:00:44-04:00
linear types: Don't add external names to the usage env
This has no observable effect, but avoids storing useless data.
- - - - -
b3226616 by Andrei Borzenkov at 2023-05-04T15:01:25-04:00
Improved documentation for the Data.OldList.nub function
There was recomentation to use map head . group . sort instead of nub
function, but containers library has more suitable and efficient
analogue
- - - - -
e8b72ff6 by Ryan Scott at 2023-05-04T15:02:02-04:00
Fix type variable substitution in gen_Newtype_fam_insts
Previously, `gen_Newtype_fam_insts` was substituting the type variable binders
of a type family instance using `substTyVars`, which failed to take type
variable dependencies into account. There is similar code in
`GHC.Tc.TyCl.Class.tcATDefault` that _does_ perform this substitution properly,
so this patch:
1. Factors out this code into a top-level `substATBndrs` function, and
2. Uses `substATBndrs` in `gen_Newtype_fam_insts`.
Fixes #23329.
- - - - -
275836d2 by Torsten Schmits at 2023-05-05T08:43:02+00:00
Add structured error messages for GHC.Rename.Utils
Tracking ticket: #20115
MR: !10350
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
983ce558 by Oleg Grenrus at 2023-05-05T13:11:29-04:00
Use TemplateHaskellQuotes in TH.Syntax to construct Names
- - - - -
a5174a59 by Matthew Pickering at 2023-05-05T18:42:31-04:00
driver: Use hooks from plugin_hsc_env
This fixes a bug in oneshot mode where hooks modified in a plugin
wouldn't be used in oneshot mode because we neglected to use the right
hsc_env. This was observed by @csabahruska.
- - - - -
18a7d03d by Aaron Allen at 2023-05-05T18:42:31-04:00
Rework plugin initialisation points
In general this patch pushes plugin initialisation points to earlier in
the pipeline. As plugins can modify the `HscEnv`, it's imperative that
the plugins are initialised as soon as possible and used thereafter.
For example, there are some new tests which modify hsc_logger and other
hooks which failed to fire before (and now do)
One consequence of this change is that the error for specifying the
usage of a HPT plugin from the command line has changed, because it's
now attempted to be loaded at initialisation rather than causing a
cyclic module import.
Closes #21279
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
- - - - -
6e776ed3 by Matthew Pickering at 2023-05-05T18:42:31-04:00
docs: Add Note [Timing of plugin initialization]
- - - - -
e1df8511 by Matthew Pickering at 2023-05-05T18:43:07-04:00
Incrementally update ghcup metadata in ghc/ghcup-metadata
This job paves the way for distributing nightly builds
* A new repo https://gitlab.haskell.org/ghc/ghcup-metadata stores the
metadata on the "updates" branch.
* Each night this metadata is downloaded and the nightly builds are
appended to the end of the metadata.
* The update job only runs on the scheduled nightly pipeline, not just
when NIGHTLY=1.
Things which are not done yet
* Modify the retention policy for nightly jobs
* Think about building release flavour compilers to distribute nightly.
Fixes #23334
- - - - -
8f303d27 by Rodrigo Mesquita at 2023-05-05T22:04:31-04:00
docs: Remove mentions of ArrayArray# from unlifted FFI section
Fixes #23277
- - - - -
994bda56 by Torsten Schmits at 2023-05-05T22:05:12-04:00
Add structured error messages for GHC.Rename.Module
Tracking ticket: #20115
MR: !10361
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
Only addresses the single warning missing from the previous MR.
- - - - -
3e3a6be4 by Ben Gamari at 2023-05-08T12:15:19+00:00
rts: Fix data-race in hs_init_ghc
As noticed by @Terrorjack, `hs_init_ghc` previously used non-atomic
increment/decrement on the RTS's initialization count. This may go wrong
in a multithreaded program which initializes the runtime multiple times.
Closes #22756.
- - - - -
78c8dc50 by Torsten Schmits at 2023-05-08T21:41:51-04:00
Add structured error messages for GHC.IfaceToCore
Tracking ticket: #20114
MR: !10390
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
- - - - -
0e2df4c9 by Bryan Richter at 2023-05-09T12:03:35+03:00
Fix up rules for ghcup-metadata-nightly-push
- - - - -
b970e64f by Ben Gamari at 2023-05-09T08:41:33-04:00
testsuite: Add test for atomicSwapIORef
- - - - -
81cfefd2 by Ben Gamari at 2023-05-09T08:41:53-04:00
compiler: Implement atomicSwapIORef with xchg
As requested by @treeowl in CLC#139.
- - - - -
6b29154d by Ben Gamari at 2023-05-09T08:41:53-04:00
Make atomicSwapMutVar# an inline primop
- - - - -
64064cfe by doyougnu at 2023-05-09T18:40:01-04:00
JS: add GHC.JS.Optimizer, remove RTS.Printer, add Linker.Opt
This MR changes some simple optimizations and is a first step in re-architecting
the JS backend pipeline to add the optimizer. In particular it:
- removes simple peep hole optimizations from `GHC.StgToJS.Printer` and removes that module
- adds module `GHC.JS.Optimizer`
- defines the same peep hole opts that were removed only now they are `Syntax -> Syntax` transformations rather than `Syntax -> JS code` optimizations
- hooks the optimizer into code gen
- adds FuncStat and ForStat constructors to the backend.
Working Ticket:
- #22736
Related MRs:
- MR !10142
- MR !10000
-------------------------
Metric Decrease:
CoOpt_Read
ManyAlternatives
PmSeriesS
PmSeriesT
PmSeriesV
T10421
T12707
T13253
T13253-spj
T15164
T17516
T18140
T18282
T18698a
T18698b
T18923
T1969
T19695
T20049
T3064
T5321FD
T5321Fun
T783
T9198
T9233
T9630
-------------------------
- - - - -
6738c01d by Krzysztof Gogolewski at 2023-05-09T18:40:38-04:00
Add a regression test for #21050
- - - - -
b2cdb7da by Ben Gamari at 2023-05-09T18:41:14-04:00
nonmoving: Account for mutator allocations in bytes_allocated
Previously we failed to account direct mutator allocations into the
nonmoving heap against the mutator's allocation limit and
`cap->total_allocated`. This only manifests during CAF evaluation (since
we allocate the CAF's blackhole directly into the nonmoving heap).
Fixes #23312.
- - - - -
0657b482 by Sven Tennie at 2023-05-09T22:22:42-04:00
Adjust AArch64 stackFrameHeaderSize
The prologue of each stack frame are the saved LR and FP registers, 8
byte each. I.e. the size of the stack frame header is 2 * 8 byte.
- - - - -
7788c09c by konsumlamm at 2023-05-09T22:23:23-04:00
Make `(&)` representation polymorphic in the return type
- - - - -
b3195922 by Ben Gamari at 2023-05-10T05:06:45-04:00
ghc-prim: Generalize keepAlive#/touch# in state token type
Closes #23163.
- - - - -
1e6861dd by Cheng Shao at 2023-05-10T05:07:25-04:00
Bump hsc2hs submodule
Fixes #22981.
- - - - -
0a513952 by Ben Gamari at 2023-05-11T04:10:17-04:00
base: Export GHC.Conc.Sync.fromThreadId
Closes #22706.
- - - - -
29be39ba by Matthew Pickering at 2023-05-11T04:10:54-04:00
Build vanilla alpine bindists
We currently attempt to build and distribute fully static alpine
bindists (ones which could be used on any linux platform) but most
people who use the alpine bindists want to use alpine to build their own
static applications (for which a fully static bindist is not necessary).
We should build and distribute these bindists for these users whilst the
fully-static bindist is still unusable.
Fixes #23349
- - - - -
40c7daed by Simon Peyton Jones at 2023-05-11T04:11:30-04:00
Look both ways when looking for quantified equalities
When looking up (t1 ~# t2) in the quantified constraints,
check both orientations. Forgetting this led to #23333.
- - - - -
c17bb82f by Rodrigo Mesquita at 2023-05-11T04:12:07-04:00
Move "target has RTS linker" out of settings
We move the "target has RTS linker" information out of configure into a
predicate in GHC, and remove this option from the settings file where it
is unnecessary -- it's information statically known from the platform.
Note that previously we would consider `powerpc`s and `s390x`s other
than `powerpc-ibm-aix*` and `s390x-ibm-linux` to have an RTS linker,
but the RTS linker supports neither platform.
Closes #23361
- - - - -
bd0b056e by Krzysztof Gogolewski at 2023-05-11T04:12:44-04:00
Add a test for #17284
Since !10123 we now reject this program.
- - - - -
630b1fea by Andrew Lelechenko at 2023-05-11T04:13:24-04:00
Document unlawfulness of instance Num Fixed
Fixes #22712
- - - - -
87eebf98 by sheaf at 2023-05-11T11:55:22-04:00
Add fused multiply-add instructions
This patch adds eight new primops that fuse a multiplication and an
addition or subtraction:
- `{fmadd,fmsub,fnmadd,fnmsub}{Float,Double}#`
fmadd x y z is x * y + z, computed with a single rounding step.
This patch implements code generation for these primops in the following
backends:
- X86, AArch64 and PowerPC NCG,
- LLVM
- C
WASM uses the C implementation. The primops are unsupported in the
JavaScript backend.
The following constant folding rules are also provided:
- compute a * b + c when a, b, c are all literals,
- x * y + 0 ==> x * y,
- ±1 * y + z ==> z ± y and x * ±1 + z ==> z ± x.
NB: the constant folding rules incorrectly handle signed zero.
This is a known limitation with GHC's floating-point constant folding
rules (#21227), which we hope to resolve in the future.
- - - - -
ad16a066 by Krzysztof Gogolewski at 2023-05-11T11:55:59-04:00
Add a test for #21278
- - - - -
05cea68c by Matthew Pickering at 2023-05-11T11:56:36-04:00
rts: Refine memory retention behaviour to account for pinned/compacted objects
When using the copying collector there is still a lot of data which
isn't copied (such as pinned, compacted, large objects etc). The logic
to decide how much memory to retain didn't take into account that these
wouldn't be copied. Therefore we pessimistically retained 2* the amount
of memory for these blocks even though they wouldn't be copied by the
collector.
The solution is to split up the heap into two parts, the parts which
will be copied and the parts which won't be copied. Then the appropiate
factor is applied to each part individually (2 * for copying and 1.2 *
for not copying).
The T23221 test demonstrates this improvement with a program which first
allocates many unpinned ByteArray# followed by many pinned ByteArray#
and observes the difference in the ultimate memory baseline between the
two.
There are some charts on #23221.
Fixes #23221
- - - - -
1bb24432 by Cheng Shao at 2023-05-11T11:57:15-04:00
hadrian: fix no_dynamic_libs flavour transformer
This patch fixes the no_dynamic_libs flavour transformer and make
fully_static reuse it. Previously building with no_dynamic_libs fails
since ghc program is still dynamic and transitively brings in dyn ways
of rts which are produced by no rules.
- - - - -
0ed493a3 by Josh Meredith at 2023-05-11T23:08:27-04:00
JS: refactor jsSaturate to return a saturated JStat (#23328)
- - - - -
a856d98e by Pierre Le Marre at 2023-05-11T23:09:08-04:00
Doc: Fix out-of-sync using-optimisation page
- Make explicit that default flag values correspond to their -O0 value.
- Fix -fignore-interface-pragmas, -fstg-cse, -fdo-eta-reduction,
-fcross-module-specialise, -fsolve-constant-dicts, -fworker-wrapper.
- - - - -
c176ad18 by sheaf at 2023-05-12T06:10:57-04:00
Don't panic in mkNewTyConRhs
This function could come across invalid newtype constructors, as we
only perform validity checking of newtypes once we are outside the
knot-tied typechecking loop.
This patch changes this function to fake up a stub type in the case of
an invalid newtype, instead of panicking.
This patch also changes "checkNewDataCon" so that it reports as many
errors as possible at once.
Fixes #23308
- - - - -
ab63daac by Krzysztof Gogolewski at 2023-05-12T06:11:38-04:00
Allow Core optimizations when interpreting bytecode
Tracking ticket: #23056
MR: !10399
This adds the flag `-funoptimized-core-for-interpreter`, permitting use
of the `-O` flag to enable optimizations when compiling with the
interpreter backend, like in ghci.
- - - - -
c6cf9433 by Ben Gamari at 2023-05-12T06:12:14-04:00
hadrian: Fix mention of non-existent removeFiles function
Previously Hadrian's bindist Makefile referred to a `removeFiles`
function that was previously defined by the `make` build system. Since
the `make` build system is no longer around, this function is now
undefined. Naturally, make being make, this appears to be silently
ignored instead of producing an error.
Fix this by rewriting it to `rm -f`.
Closes #23373.
- - - - -
eb60ec18 by Andrew Lelechenko at 2023-05-12T06:12:54-04:00
Mention new implementation of GHC.IORef.atomicSwapIORef in the changelog
- - - - -
aa84cff4 by Teo Camarasu at 2023-05-12T19:27:23-04:00
rts: Ensure non-moving gc is not running when pausing
- - - - -
5ad776ab by Teo Camarasu at 2023-05-12T19:27:23-04:00
rts: Teach listAllBlocks about nonmoving heap
List all blocks on the non-moving heap.
Resolves #22627
- - - - -
d683b2e5 by Krzysztof Gogolewski at 2023-05-12T19:28:00-04:00
Fix coercion optimisation for SelCo (#23362)
setNominalRole_maybe is supposed to output a nominal coercion.
In the SelCo case, it was not updating the stored role to Nominal,
causing #23362.
- - - - -
59aa4676 by Alexis King at 2023-05-12T19:28:47-04:00
hadrian: Fix linker script flag for MergeObjects builder
This fixes what appears to have been a typo in !9530. The `-t` flag just
enables tracing on all versions of `ld` I’ve looked at, while `-T` is
used to specify a linker script. It seems that this worked anyway for
some reason on some `ld` implementations (perhaps because they
automatically detect linker scripts), but the missing `-T` argument
causes `gold` to complain.
- - - - -
4bf9fa0f by Adam Gundry at 2023-05-12T23:49:49-04:00
Less coercion optimization for non-newtype axioms
See Note [Push transitivity inside newtype axioms only] for an explanation
of the change here. This change substantially improves the performance of
coercion optimization for programs involving transitive type family reductions.
-------------------------
Metric Decrease:
CoOpt_Singletons
LargeRecord
T12227
T12545
T13386
T15703
T5030
T8095
-------------------------
- - - - -
dc0c9574 by Adam Gundry at 2023-05-12T23:49:49-04:00
Move checkAxInstCo to GHC.Core.Lint
A consequence of the previous change is that checkAxInstCo is no longer
called during coercion optimization, so it can be moved back where it belongs.
Also includes some edits to Note [Conflict checking with AxiomInstCo] as
suggested by @simonpj.
- - - - -
8b9b7dbc by Simon Peyton Jones at 2023-05-12T23:50:25-04:00
Use the eager unifier in the constraint solver
This patch continues the refactoring of the constraint solver
described in #23070.
The Big Deal in this patch is to call the regular, eager unifier from the
constraint solver, when we want to create new equalities. This
replaces the existing, unifyWanted which amounted to
yet-another-unifier, so it reduces duplication of a rather subtle
piece of technology. See
* Note [The eager unifier] in GHC.Tc.Utils.Unify
* GHC.Tc.Solver.Monad.wrapUnifierTcS
I did lots of other refactoring along the way
* I simplified the treatment of right hand sides that contain CoercionHoles.
Now, a constraint that contains a hetero-kind CoercionHole is non-canonical,
and cannot be used for rewriting or unification alike. This required me
to add the ch_hertero_kind flag to CoercionHole, with consequent knock-on
effects. See wrinkle (2) of `Note [Equalities with incompatible kinds]` in
GHC.Tc.Solver.Equality.
* I refactored the StopOrContinue type to add StartAgain, so that after a
fundep improvement (for example) we can simply start the pipeline again.
* I got rid of the unpleasant (and inefficient) rewriterSetFromType/Co functions.
With Richard I concluded that they are never needed.
* I discovered Wrinkle (W1) in Note [Wanteds rewrite Wanteds] in
GHC.Tc.Types.Constraint, and therefore now prioritise non-rewritten equalities.
Quite a few error messages change, I think always for the better.
Compiler runtime stays about the same, with one outlier: a 17% improvement in T17836
Metric Decrease:
T17836
T18223
- - - - -
5cad28e7 by Bartłomiej Cieślar at 2023-05-12T23:51:06-04:00
Cleanup of dynflags override in export renaming
The deprecation warnings are normally emitted whenever the name's GRE is being looked up, which calls the GHC.Rename.Env.addUsedGRE function. We do not want those warnings to be emitted when renaming export lists, so they are artificially turned off by removing all warning categories from DynFlags at the beginning of GHC.Tc.Gen.Export.rnExports. This commit removes that dependency by unifying the function used for GRE lookup in lookup_ie to lookupGreAvailRn and disabling the call to addUsedGRE in said function (the warnings are also disabled in a call to lookupSubBndrOcc_helper in lookupChildrenExport), as per #17957. This commit also changes the setting for whether to warn about deprecated names in addUsedGREs to be an explicit enum instead of a boolean.
- - - - -
d85ed900 by Alexis King at 2023-05-13T08:45:18-04:00
Use a uniform return convention in bytecode for unary results
fixes #22958
- - - - -
8a0d45f7 by Andrew Lelechenko at 2023-05-13T08:45:58-04:00
Add more instances for Compose: Enum, Bounded, Num, Real, Integral
See https://github.com/haskell/core-libraries-committee/issues/160 for discussion
- - - - -
902f0730 by Simon Peyton Jones at 2023-05-13T14:58:34-04:00
Make GHC.Types.Id.Make.shouldUnpackTy a bit more clever
As #23307, GHC.Types.Id.Make.shouldUnpackTy was leaving money on the
table, failing to unpack arguments that are perfectly unpackable.
The fix is pretty easy; see Note [Recursive unboxing]
- - - - -
a5451438 by sheaf at 2023-05-13T14:59:13-04:00
Fix bad multiplicity role in tyConAppFunCo_maybe
The function tyConAppFunCo_maybe produces a multiplicity coercion
for the multiplicity argument of the function arrow, except that
it could be at the wrong role if asked to produce a representational
coercion. We fix this by using the 'funRole' function, which computes
the right roles for arguments to the function arrow TyCon.
Fixes #23386
- - - - -
5b9e9300 by sheaf at 2023-05-15T11:26:59-04:00
Turn "ambiguous import" error into a panic
This error should never occur, as a lookup of a type or data constructor
should never be ambiguous. This is because a single module cannot export
multiple Names with the same OccName, as per item (1) of
Note [Exporting duplicate declarations] in GHC.Tc.Gen.Export.
This code path was intended to handle duplicate record fields, but the
rest of the code had since been refactored to handle those in a
different way.
We also remove the AmbiguousImport constructor of IELookupError, as
it is no longer used.
Fixes #23302
- - - - -
e305e60c by M Farkas-Dyck at 2023-05-15T11:27:41-04:00
Unbreak some tests with latest GNU grep, which now warns about stray '\'.
Confusingly, the testsuite mangled the error to say "stray /".
We also migrate some tests from grep to grep -E, as it seems the author actually wanted an "POSIX extended" (a.k.a. sane) regex.
Background: POSIX specifies 2 "regex" syntaxen: "basic" and "extended". Of these, only "extended" syntax is actually a regular expression. Furthermore, "basic" syntax is inconsistent in its use of the '\' character — sometimes it escapes a regex metacharacter, but sometimes it unescapes it, i.e. it makes an otherwise normal character become a metacharacter. This baffles me and it seems also the authors of these tests. Also, the regex(7) man page (at least on Linux) says "basic" syntax is obsolete. Nearly all modern tools and libraries are consistent in this use of the '\' character (of which many use "extended" syntax by default).
- - - - -
5ae81842 by sheaf at 2023-05-15T14:49:17-04:00
Improve "ambiguous occurrence" error messages
This error was sometimes a bit confusing, especially when data families
were involved. This commit improves the general presentation of the
"ambiguous occurrence" error, and adds a bit of extra context in the
case of data families.
Fixes #23301
- - - - -
2f571afe by Sylvain Henry at 2023-05-15T14:50:07-04:00
Fix GHCJS OS platform (fix #23346)
- - - - -
86aae570 by Oleg Grenrus at 2023-05-15T14:50:43-04:00
Split DynFlags structure into own module
This will allow to make command line parsing to depend on
diagnostic system (which depends on dynflags)
- - - - -
fbe3fe00 by Josh Meredith at 2023-05-15T18:01:43-04:00
Replace the implementation of CodeBuffers with unboxed types
- - - - -
21f3aae7 by Josh Meredith at 2023-05-15T18:01:43-04:00
Use unboxed codebuffers in base
Metric Decrease:
encodingAllocations
- - - - -
18ea2295 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Weak pointer cleanups
Various stylistic cleanups. No functional changes.
- - - - -
c343112f by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Don't force debug output to stderr
Previously `+RTS -Dw -l` would emit debug output to the eventlog while
`+RTS -l -Dw` would emit it to stderr. This was because the parser for
`-D` would unconditionally override the debug output target. Now we
instead only do so if no it is currently `TRACE_NONE`.
- - - - -
a5f5f067 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Forcibly flush eventlog on barf
Previously we would attempt to flush via `endEventLogging` which can
easily deadlock, e.g., if `barf` fails during GC.
Using `flushEventLog` directly may result in slightly less consistent
eventlog output (since we don't take all capabilities before flushing)
but avoids deadlocking.
- - - - -
73b1e87c by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Assert that pointers aren't cleared by -DZ
This turns many segmentation faults into much easier-to-debug assertion
failures by ensuring that LOOKS_LIKE_*_PTR checks recognize bit-patterns
produced by `+RTS -DZ` clearing as invalid pointers.
This is a bit ad-hoc but this is the debug runtime.
- - - - -
37fb61d8 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Introduce printGlobalThreads
- - - - -
451d65a6 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Don't sanity-check StgTSO.global_link
See Note [Avoid dangling global_link pointers].
Fixes #19146.
- - - - -
d69cbd78 by sheaf at 2023-05-15T18:03:00-04:00
Split up tyThingToIfaceDecl from GHC.Iface.Make
This commit moves tyThingToIfaceDecl and coAxiomToIfaceDecl
from GHC.Iface.Make into GHC.Iface.Decl.
This avoids GHC.Types.TyThing.Ppr, which needs tyThingToIfaceDecl,
transitively depending on e.g. GHC.Iface.Load and GHC.Tc.Utils.Monad.
- - - - -
4d29ecdf by sheaf at 2023-05-15T18:03:00-04:00
Migrate errors to diagnostics in GHC.Tc.Module
This commit migrates the errors in GHC.Tc.Module to use the new
diagnostic infrastructure.
It required a significant overhaul of the compatibility checks between
an hs-boot or signature module and its implementation; we now use
a Writer monad to accumulate errors; see the BootMismatch datatype
in GHC.Tc.Errors.Types, with its panoply of subtypes.
For the sake of readability, several local functions inside the
'checkBootTyCon' function were split off into top-level functions.
We split off GHC.Types.HscSource into a "boot or sig" vs "normal hs file"
datatype, as this mirrors the logic in several other places where we
want to treat hs-boot and hsig files in a similar fashion.
This commit also refactors the Backpack checks for type synonyms
implementing abstract data, to correctly reject implementations that
contain qualified or quantified types (this fixes #23342 and #23344).
- - - - -
d986c98e by Rodrigo Mesquita at 2023-05-16T00:14:04-04:00
configure: Drop unused AC_PROG_CPP
In configure, we were calling `AC_PROG_CPP` but never making use of the
$CPP variable it sets or reads.
The issue is $CPP will show up in the --help output of configure,
falsely advertising a configuration option that does nothing.
The reason we don't use the $CPP variable is because HS_CPP_CMD is
expected to be a single command (without flags), but AC_PROG_CPP, when
CPP is unset, will set said variable to something like `/usr/bin/gcc -E`.
Instead, we configure HS_CPP_CMD through $CC.
- - - - -
a8f0435f by Cheng Shao at 2023-05-16T00:14:42-04:00
rts: fix --disable-large-address-space
This patch moves
ACQUIRE_ALLOC_BLOCK_SPIN_LOCK/RELEASE_ALLOC_BLOCK_SPIN_LOCK from
Storage.h to HeapAlloc.h. When --disable-large-address-space is passed
to configure, the code in HeapAlloc.h makes use of these two macros.
Fixes #23385.
- - - - -
bdb93cd2 by Oleg Grenrus at 2023-05-16T07:59:21+03:00
Add -Wmissing-role-annotations
Implements #22702
- - - - -
41ecfc34 by Ben Gamari at 2023-05-16T07:28:15-04:00
base: Export {get,set}ExceptionFinalizer from System.Mem.Weak
As proposed in CLC Proposal #126 [1].
[1]: https://github.com/haskell/core-libraries-committee/issues/126
- - - - -
67330303 by Ben Gamari at 2023-05-16T07:28:16-04:00
base: Introduce printToHandleFinalizerExceptionHandler
- - - - -
5e3f9bb5 by Josh Meredith at 2023-05-16T13:59:22-04:00
JS: Implement h$clock_gettime in the JavaScript RTS (#23360)
- - - - -
90e69d5d by Zubin Duggal at 2023-05-16T14:00:00-04:00
compiler: Use compact representation for SourceText
SourceText is serialized along with INLINE pragmas into interface files. Many of
these SourceTexts are identical, for example "{-# INLINE#". When deserialized,
each such SourceText was previously expanded out into a [Char], which is highly
wasteful of memory, and each such instance of the text would allocate an
independent list with its contents as deserializing breaks any sharing that might
have existed.
Instead, we use a `FastString` to represent these, so that each instance unique
text will be interned and stored in a memory efficient manner.
- - - - -
b70bc690 by Zubin Duggal at 2023-05-16T14:00:00-04:00
compiler: Use compact representation/FastStrings for `SourceNote`s
`SourceNote`s should not be stored as [Char] as this is highly wasteful
and in certain scenarios can be highly duplicated.
Metric Decrease:
hard_hole_fits
- - - - -
6231a126 by Zubin Duggal at 2023-05-16T14:00:00-04:00
compiler: Use compact representation for UsageFile (#22744)
Use FastString to store filepaths in interface files, as this data is
highly redundant so we want to share all instances of filepaths in the
compiler session.
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47a58150 by Zubin Duggal at 2023-05-16T14:00:00-04:00
testsuite: add test for T22744
This test checks for #22744 by compiling 100 modules which each have
a dependency on 1000 distinct external files.
Previously, when loading these interfaces from disk, each individual instance
of a filepath in the interface will would be allocated as an individual object
on the heap, meaning we have heap objects for 100*1000 files, when there are
only 1000 distinct files we care about.
This test checks this by first compiling the module normally, then measuring
the peak memory usage in a no-op recompile, as the recompilation checking will
force the allocation of all these filepaths.
- - - - -
0451bdc9 by Ben Gamari at 2023-05-16T21:31:40-04:00
users guide: Add glossary
Currently this merely explains the meaning of "technology preview" in
the context of released features.
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0ba52e4e by Ben Gamari at 2023-05-16T21:31:40-04:00
Update glossary.rst
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3d23060c by Ben Gamari at 2023-05-16T21:31:40-04:00
Use glossary directive
- - - - -
2972fd66 by Sylvain Henry at 2023-05-16T21:32:20-04:00
JS: fix getpid (fix #23399)
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5fe1d3e6 by Matthew Pickering at 2023-05-17T21:42:00-04:00
Use setSrcSpan rather than setLclEnv in solveForAll
In subsequent MRs (#23409) we want to remove the TcLclEnv argument from
a CtLoc. This MR prepares us for that by removing the one place where
the entire TcLclEnv is used, by using it more precisely to just set the
contexts source location.
Fixes #23390
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385edb65 by Torsten Schmits at 2023-05-17T21:42:40-04:00
Update the users guide paragraph on -O in GHCi
In relation to #23056
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87626ef0 by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Add test for #13660
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9eef53b1 by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Move implementation of GHC.Foreign to GHC.Internal
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174ea2fa by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Introduce {new,with}CStringLen0
These are useful helpers for implementing the internal-NUL code unit
check needed to fix #13660.
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a46ced16 by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Clean up documentation
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b98d99cc by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Ensure that FilePaths don't contain NULs
POSIX filepaths may not contain the NUL octet but previously we did not
reject such paths. This could be exploited by untrusted input to cause
discrepancies between various `FilePath` queries and the opened
filename. For instance, `readFile "hello.so\x00.txt"` would open the
file `"hello.so"` yet `takeFileExtension` would return `".txt"`.
The same argument applies to Windows FilePaths
Fixes #13660.
- - - - -
7ae45459 by Simon Peyton Jones at 2023-05-18T15:19:29-04:00
Allow the demand analyser to unpack tuple and equality dictionaries
Addresses #23398. The demand analyser usually does not unpack class
dictionaries: see Note [Do not unbox class dictionaries] in
GHC.Core.Opt.DmdAnal.
This patch makes an exception for tuple dictionaries and equality
dictionaries, for reasons explained in wrinkles (DNB1) and (DNB2) of
the above Note.
Compile times fall by 0.1% for some reason (max 0.7% on T18698b).
- - - - -
b53a9086 by Greg Steuck at 2023-05-18T15:20:08-04:00
Use a simpler and more portable construct in ld.ldd check
printf '%q\n' is a bash extension which led to incorrectly
failing an ld.lld test on OpenBSD which uses pdksh as /bin/sh
- - - - -
dd5710af by Torsten Schmits at 2023-05-18T15:20:50-04:00
Update the warning about interpreter optimizations
to reflect that they're not incompatible anymore, but guarded by a flag
- - - - -
4f6dd999 by Matthew Pickering at 2023-05-18T15:21:26-04:00
Remove stray dump flags in GHC.Rename.Names
- - - - -
4bca0486 by Oleg Grenrus at 2023-05-19T11:51:33+03:00
Make Warn = Located DriverMessage
This change makes command line argument parsing use diagnostic
framework for producing warnings.
- - - - -
525ed554 by Simon Peyton Jones at 2023-05-19T10:09:15-04:00
Type inference for data family newtype instances
This patch addresses #23408, a tricky case with data family
newtype instances. Consider
type family TF a where TF Char = Bool
data family DF a
newtype instance DF Bool = MkDF Int
and [W] Int ~R# DF (TF a), with a Given (a ~# Char). We must fully
rewrite the Wanted so the tpye family can fire; that wasn't happening.
- - - - -
c6fb6690 by Peter Trommler at 2023-05-20T03:16:08-04:00
testsuite: fix predicate on rdynamic test
Test rdynamic requires dynamic linking support, which is
orthogonal to RTS linker support. Change the predicate accordingly.
Fixes #23316
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735d504e by Matthew Pickering at 2023-05-20T03:16:44-04:00
docs: Use ghc-ticket directive where appropiate in users guide
Using the directive automatically formats and links the ticket
appropiately.
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b56d7379 by Sylvain Henry at 2023-05-22T14:21:22-04:00
NCG: remove useless .align directive (#20758)
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15b93d2f by Simon Peyton Jones at 2023-05-22T14:21:58-04:00
Add test for #23156
This program had exponential typechecking time in GHC 9.4 and 9.6
- - - - -
2b53f206 by Greg Steuck at 2023-05-22T20:23:11-04:00
Revert "Change hostSupportsRPaths to report False on OpenBSD"
This reverts commit 1e0d8fdb55a38ece34fa6cf214e1d2d46f5f5bf2.
- - - - -
882e43b7 by Greg Steuck at 2023-05-22T20:23:11-04:00
Disable T17414 on OpenBSD
Like on other systems it's not guaranteed that there's sufficient
space in /tmp to write 2G out.
- - - - -
9d531f9a by Greg Steuck at 2023-05-22T20:23:11-04:00
Bring back getExecutablePath to getBaseDir on OpenBSD
Fix #18173
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9db0eadd by Krzysztof Gogolewski at 2023-05-22T20:23:47-04:00
Add an error origin for impedance matching (#23427)
- - - - -
33cf4659 by Ben Gamari at 2023-05-23T03:46:20-04:00
testsuite: Add tests for #23146
Both lifted and unlifted variants.
- - - - -
76727617 by Ben Gamari at 2023-05-23T03:46:21-04:00
codeGen: Fix some Haddocks
- - - - -
33a8c348 by Ben Gamari at 2023-05-23T03:46:21-04:00
codeGen: Give proper LFInfo to datacon wrappers
As noted in `Note [Conveying CAF-info and LFInfo between modules]`,
when importing a binding from another module we must ensure that it gets
the appropriate `LambdaFormInfo` if it is in WHNF to ensure that
references to it are tagged correctly.
However, the implementation responsible for doing this,
`GHC.StgToCmm.Closure.mkLFImported`, only dealt with datacon workers and
not wrappers. This lead to the crash of this program in #23146:
module B where
type NP :: [UnliftedType] -> UnliftedType
data NP xs where
UNil :: NP '[]
module A where
import B
fieldsSam :: NP xs -> NP xs -> Bool
fieldsSam UNil UNil = True
x = fieldsSam UNil UNil
Due to its GADT nature, `UNil` produces a trivial wrapper
$WUNil :: NP '[]
$WUNil = UNil @'[] @~(<co:1>)
which is referenced in the RHS of `A.x`. Due to the above-mentioned bug
in `mkLFImported`, the references to `$WUNil` passed to `fieldsSam` were
not tagged. This is problematic as `fieldsSam` expected its arguments to
be tagged as they are unlifted.
The fix is straightforward: extend the logic in `mkLFImported` to cover
(nullary) datacon wrappers as well as workers. This is safe because we
know that the wrapper of a nullary datacon will be in WHNF, even if it
includes equalities evidence (since such equalities are not runtime
relevant).
Thanks to @MangoIV for the great ticket and @alt-romes for his
minimization and help debugging.
Fixes #23146.
- - - - -
2fc18e9e by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
codeGen: Fix LFInfo of imported datacon wrappers
As noted in #23231 and in the previous commit, we were failing to give a
an LFInfo of LFCon to a nullary datacon wrapper from another module,
failing to properly tag pointers which ultimately led to the
segmentation fault in #23146.
On top of the previous commit which now considers wrappers where we
previously only considered workers, we change the order of the guards so
that we check for the arity of the binding before we check whether it is
a constructor. This allows us to
(1) Correctly assign `LFReEntrant` to imported wrappers whose worker was
nullary, which we previously would fail to do
(2) Remove the `isNullaryRepDataCon` predicate:
(a) which was previously wrong, since it considered wrappers whose
workers had zero-width arguments to be non-nullary and would fail to
give `LFCon` to them
(b) is now unnecessary, since arity == 0 guarantees
- that the worker takes no arguments at all
- and the wrapper takes no arguments and its RHS must be an
application of the worker to zero-width-args only.
- we lint these two items with an assertion that the datacon
`hasNoNonZeroWidthArgs`
We also update `isTagged` to use the new logic in determining the
LFInfos of imported Ids.
The creation of LFInfos for imported Ids and this detail are explained
in Note [The LFInfo of Imported Ids].
Note that before the patch to those issues we would already consider these
nullary wrappers to have `LFCon` lambda form info; but failed to re-construct
that information in `mkLFImported`
Closes #23231, #23146
(I've additionally batched some fixes to documentation I found while
investigating this issue)
- - - - -
0598f7f0 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Make LFInfos for DataCons on construction
As a result of the discussion in !10165, we decided to amend the
previous commit which fixed the logic of `mkLFImported` with regard to
datacon workers and wrappers.
Instead of having the logic for the LFInfo of datacons be in
`mkLFImported`, we now construct an LFInfo for all data constructors on
GHC.Types.Id.Make and store it in the `lfInfo` field.
See the new Note [LFInfo of DataCon workers and wrappers] and
ammendments to Note [The LFInfo of Imported Ids]
- - - - -
12294b22 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Update Note [Core letrec invariant]
Authored by @simonpj
- - - - -
e93ab972 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Rename mkLFImported to importedIdLFInfo
The `mkLFImported` sounded too much like a constructor of sorts, when
really it got the `LFInfo` of an imported Id from its `lf_info` field
when this existed, and otherwise returned a conservative estimate of
that imported Id's LFInfo. This in contrast to functions such as
`mkLFReEntrant` which really are about constructing an `LFInfo`.
- - - - -
e54d9259 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Enforce invariant on typePrimRepArgs in the types
As part of the documentation effort in !10165 I came across this
invariant on 'typePrimRepArgs' which is easily expressed at the
type-level through a NonEmpty list.
It allowed us to remove one panic.
- - - - -
b8fe6a0c by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Merge outdated Note [Data con representation] into Note [Data constructor representation]
Introduce new Note [Constructor applications in STG] to better support
the merge, and reference it from the relevant bits in the STG syntax.
- - - - -
e1590ddc by Simon Peyton Jones at 2023-05-23T03:46:57-04:00
Add the SolverStage monad
This refactoring makes a substantial improvement in the
structure of the type-checker's constraint solver: #23070.
Specifically:
* Introduced the SolverStage monad. See GHC.Tc.Solver.Monad
Note [The SolverStage monad]
* Make each solver pipeline (equalities, dictionaries, irreds etc)
deal with updating the inert set, as a separate SolverStage. There
is sometimes special stuff to do, and it means that each full
pipeline can have type SolverStage Void, indicating that they never
return anything.
* Made GHC.Tc.Solver.Equality.zonkEqTypes into a SolverStage. Much nicer.
* Combined the remnants of GHC.Tc.Solver.Canonical and
GHC.Tc.Solver.Interact into a new module GHC.Tc.Solver.Solve.
(Interact and Canonical are removed.)
* Gave the same treatment to dictionary and irred constraints
as I have already done for equality constraints:
* New types (akin to EqCt): IrredCt and DictCt
* Ct is now just a simple sum type
data Ct
= CDictCan DictCt
| CIrredCan IrredCt
| CEqCan EqCt
| CQuantCan QCInst
| CNonCanonical CtEvidence
* inert_dicts can now have the better type DictMap DictCt, instead of
DictMap Ct; and similarly inert_irreds.
* Significantly simplified the treatment of implicit parameters.
Previously we had a number of special cases
* interactGivenIP, an entire function
* special case in maybeKickOut
* special case in findDict, when looking up dictionaries
But actually it's simpler than that. When adding a new Given, implicit
parameter constraint to the InertSet, we just need to kick out any
existing inert constraints that mention that implicit parameter.
The main work is done in GHC.Tc.Solver.InertSet.delIPDict, along with
its auxiliary GHC.Core.Predicate.mentionsIP.
See Note [Shadowing of implicit parameters] in GHC.Tc.Solver.Dict.
* Add a new fast-path in GHC.Tc.Errors.Hole.tcCheckHoleFit.
See Note [Fast path for tcCheckHoleFit]. This is a big win in some cases:
test hard_hole_fits gets nearly 40% faster (at compile time).
* Add a new fast-path for solving /boxed/ equality constraints
(t1 ~ t2). See Note [Solving equality classes] in GHC.Tc.Solver.Dict.
This makes a big difference too: test T17836 compiles 40% faster.
* Implement the PermissivePlan of #23413, which concerns what happens with
insoluble Givens. Our previous treatment was wildly inconsistent as that
ticket pointed out.
A part of this, I simplified GHC.Tc.Validity.checkAmbiguity: now we simply
don't run the ambiguity check at all if -XAllowAmbiguousTypes is on.
Smaller points:
* In `GHC.Tc.Errors.misMatchOrCND` instead of having a special case for
insoluble /occurs/ checks, broaden in to all insouluble constraints.
Just generally better. See Note [Insoluble mis-match] in that module.
As noted above, compile time perf gets better. Here are the changes
over 0.5% on Fedora. (The figures are slightly larger on Windows for
some reason.)
Metrics: compile_time/bytes allocated
-------------------------------------
LargeRecord(normal) -0.9%
MultiLayerModulesTH_OneShot(normal) +0.5%
T11822(normal) -0.6%
T12227(normal) -1.8% GOOD
T12545(normal) -0.5%
T13035(normal) -0.6%
T15703(normal) -1.4% GOOD
T16875(normal) -0.5%
T17836(normal) -40.7% GOOD
T17836b(normal) -12.3% GOOD
T17977b(normal) -0.5%
T5837(normal) -1.1%
T8095(normal) -2.7% GOOD
T9020(optasm) -1.1%
hard_hole_fits(normal) -37.0% GOOD
geo. mean -1.3%
minimum -40.7%
maximum +0.5%
Metric Decrease:
T12227
T15703
T17836
T17836b
T8095
hard_hole_fits
LargeRecord
T9198
T13035
- - - - -
6abf3648 by Simon Peyton Jones at 2023-05-23T03:46:57-04:00
Avoid an assertion failure in abstractFloats
The function GHC.Core.Opt.Simplify.Utils.abstractFloats
was carelessly calling lookupIdSubst_maybe on a CoVar;
but a precondition of the latter is being given an Id.
In fact it's harmless to call it on a CoVar, but still, the
precondition on lookupIdSubst_maybe makes sense, so I added
a test for CoVars.
This avoids a crash in a DEBUG compiler, but otherwise has
no effect. Fixes #23426.
- - - - -
838aaf4b by hainq at 2023-05-24T12:41:19-04:00
Migrate errors in GHC.Tc.Validity
This patch migrates the error messages in GHC.Tc.Validity to use
the new diagnostic infrastructure.
It adds the constructors:
- TcRnSimplifiableConstraint
- TcRnArityMismatch
- TcRnIllegalInstanceDecl, with sub-datatypes for HasField errors
and fundep coverage condition errors.
- - - - -
8539764b by Krzysztof Gogolewski at 2023-05-24T12:41:56-04:00
linear lint: Add missing processing of DEFAULT
In this correct program
f :: a %1 -> a
f x = case x of x { _DEFAULT -> x }
after checking the alternative we weren't popping the case binder 'x'
from the usage environment, which meant that the lambda-bound 'x'
was counted twice: in the scrutinee and (incorrectly) in the alternative.
In fact, we weren't checking the usage of 'x' at all.
Now the code for handling _DEFAULT is similar to the one handling
data constructors.
Fixes #23025.
- - - - -
ae683454 by Matthew Pickering at 2023-05-24T12:42:32-04:00
Remove outdated "Don't check hs-boot type family instances too early" note
This note was introduced in 25b70a29f623 which delayed performing some
consistency checks for type families. However, the change was reverted
later in 6998772043a7f0b0360116eb5ffcbaa5630b21fb but the note was not
removed.
I found it confusing when reading to code to try and work out what
special behaviour there was for hs-boot files (when in-fact there isn't
any).
- - - - -
44af57de by Matthew Pickering at 2023-05-24T12:43:08-04:00
rts: Define ticky macro stubs
These macros have long been undefined which has meant we were missing
reporting these allocations in ticky profiles.
The most critical missing definition was TICK_ALLOC_HEAP_NOCTR which was
missing all the RTS calls to allocate, this leads to a the overall
ALLOC_RTS_tot number to be severaly underreported.
Of particular interest though is the ALLOC_STACK_ctr and ALLOC_STACK_tot
counters which are useful to tracking stack allocations.
Fixes #23421
- - - - -
b2dabe3a by Matthew Pickering at 2023-05-24T12:43:08-04:00
rts: ticky: Rename TICK_ALLOC_HEAP_NOCTR to TICK_ALLOC_RTS
This macro increments the ALLOC_HEAP_tot and ALLOC_HEAP_ctr so it makes
more sense to name it after that rather than the suffix NOCTR, whose
meaning has been lost to the mists of time.
- - - - -
eac4420a by Ben Gamari at 2023-05-24T12:43:45-04:00
users guide: A few small mark-up fixes
- - - - -
a320ca76 by Rodrigo Mesquita at 2023-05-24T12:44:20-04:00
configure: Fix support check for response files.
In failing to escape the '-o' in '-o\nconftest\nconftest.o\n' argument
to printf, the writing of the arguments response file always failed.
The fix is to pass the arguments after `--` so that they are treated
positional arguments rather than flags to printf.
Closes #23435
- - - - -
f21ce0e4 by mangoiv at 2023-05-24T12:45:00-04:00
[feat] add .direnv to the .gitignore file
- - - - -
36d5944d by Andrew Lelechenko at 2023-05-24T20:58:34-04:00
Add Data.List.unsnoc
See https://github.com/haskell/core-libraries-committee/issues/165 for discussion
- - - - -
c0f2f9e3 by Bartłomiej Cieślar at 2023-05-24T20:59:14-04:00
Fix crash in backpack signature merging with -ddump-rn-trace
In some cases, backpack signature merging could crash in addUsedGRE
when -ddump-rn-trace was enabled, as pretty-printing the GREInfo would cause
unavailable interfaces to be loaded.
This commit fixes that issue by not pretty-printing the GREInfo in addUsedGRE
when -ddump-rn-trace is enabled.
Fixes #23424
Signed-off-by: Bartłomiej Cieślar <bcieslar2001(a)gmail.com>
- - - - -
5a07d94a by Krzysztof Gogolewski at 2023-05-25T03:30:20-04:00
Add a regression test for #13981
The panic was fixed by 6998772043a7f0b. Fixes #13981.
- - - - -
182df90e by Krzysztof Gogolewski at 2023-05-25T03:30:57-04:00
Add a test for #23355
It was fixed by !10061, so I'm adding it in the same group.
- - - - -
1b31b039 by uhbif19 at 2023-05-25T12:08:28+02:00
Migrate errors in GHC.Rename.Splice GHC.Rename.Pat
This commit migrates the errors in GHC.Rename.Splice and GHC.Rename.Pat
to use the new diagnostic infrastructure.
- - - - -
56abe494 by sheaf at 2023-05-25T12:09:55+02:00
Common up Template Haskell errors in TcRnMessage
This commit commons up the various Template Haskell errors into a
single constructor, TcRnTHError, of TcRnMessage.
- - - - -
a487ba9e by Krzysztof Gogolewski at 2023-05-25T14:35:56-04:00
Enable ghci tests for unboxed tuples
The tests were originally skipped because ghci used not to support
unboxed tuples/sums.
- - - - -
dc3422d4 by Matthew Pickering at 2023-05-25T18:57:19-04:00
rts: Build ticky GHC with single-threaded RTS
The threaded RTS allows you to use ticky profiling but only for the
counters in the generated code. The counters used in the C portion of
the RTS are disabled. Updating the counters is also racy using the
threaded RTS which can lead to misleading or incorrect ticky results.
Therefore we change the hadrian flavour to build using the
single-threaded RTS (mainly in order to get accurate C code counter
increments)
Fixes #23430
- - - - -
fbc8e04e by sheaf at 2023-05-25T18:58:00-04:00
Propagate long-distance info in generated code
When desugaring generated pattern matches, we skip pattern match checks.
However, this ended up also discarding long-distance information, which
might be needed for user-written sub-expressions.
Example:
```haskell
okay (GADT di) cd =
let sr_field :: ()
sr_field = case getFooBar di of { Foo -> () }
in case cd of { SomeRec _ -> SomeRec sr_field }
```
With sr_field a generated FunBind, we still want to propagate the outer
long-distance information from the GADT pattern match into the checks
for the user-written RHS of sr_field.
Fixes #23445
- - - - -
f8ced241 by Matthew Pickering at 2023-05-26T15:26:21-04:00
Introduce GHCiMessage to wrap GhcMessage
By introducing a wrapped message type we can control how certain
messages are printed in GHCi (to add extra information for example)
- - - - -
58e554c1 by Matthew Pickering at 2023-05-26T15:26:22-04:00
Generalise UnknownDiagnostic to allow embedded diagnostics to access
parent diagnostic options.
* Split default diagnostic options from Diagnostic class into
HasDefaultDiagnosticOpts class.
* Generalise UnknownDiagnostic to allow embedded diagnostics to access
options.
The principle idea here is that when wrapping an error message (such as
GHCMessage to make GHCiMessage) then we need to also be able to lift the
configuration when overriding how messages are printed (see load' for an
example).
- - - - -
b112546a by Matthew Pickering at 2023-05-26T15:26:22-04:00
Allow API users to wrap error messages created during 'load'
This allows API users to configure how messages are rendered when they
are emitted from the load function. For an example see how
'loadWithCache' is used in GHCi.
- - - - -
2e4cf0ee by Matthew Pickering at 2023-05-26T15:26:22-04:00
Abstract cantFindError and turn Opt_BuildingCabal into a print-time option
* cantFindError is abstracted so that the parts which mention specific
things about ghc/ghci are parameters. The intention being that
GHC/GHCi can specify the right values to put here but otherwise
display the same error message.
* The BuildingCabalPackage argument from GenericMissing is removed and
turned into a print-time option. The reason for the error is not
dependent on whether `-fbuilding-cabal-package` is passed, so we don't
want to store that in the error message.
- - - - -
34b44f7d by Matthew Pickering at 2023-05-26T15:26:22-04:00
error messages: Don't display ghci specific hints for missing packages
Tickets like #22884 suggest that it is confusing that GHC used on the
command line can suggest options which only work in GHCi.
This ticket uses the error message infrastructure to override certain
error messages which displayed GHCi specific information so that this
information is only showed when using GHCi.
The main annoyance is that we mostly want to display errors in the same
way as before, but with some additional information. This means that the
error rendering code has to be exported from the Iface/Errors/Ppr.hs
module.
I am unsure about whether the approach taken here is the best or most
maintainable solution.
Fixes #22884
- - - - -
05a1b626 by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Don't override existing metadata if version already exists.
If a nightly pipeline runs twice for some reason for the same version
then we really don't want to override an existing entry with new
bindists. This could cause ABI compatability issues for users or break
ghcup's caching logic.
- - - - -
fcbcb3cc by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Use proper API url for bindist download
Previously we were using links from the web interface, but it's more
robust and future-proof to use the documented links to the artifacts.
https://docs.gitlab.com/ee/api/job_artifacts.html
- - - - -
5b59c8fe by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Set Nightly and LatestNightly tags
The latest nightly release needs the LatestNightly tag, and all other
nightly releases need the Nightly tag. Therefore when the metadata is
updated we need to replace all LatestNightly with Nightly.`
- - - - -
914e1468 by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Download nightly metadata for correct date
The metadata now lives in https://gitlab.haskell.org/ghc/ghcup-metadata
with one metadata file per year. When we update the metadata we download
and update the right file for the current year.
- - - - -
16cf7d2e by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Download metadata and update for correct year
something about pipeline date
- - - - -
14792c4b by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Don't skip CI
On a push we now have a CI job which updates gitlab pages with the
metadata files.
- - - - -
1121bdd8 by Matthew Pickering at 2023-05-26T15:26:59-04:00
ghcup-metadata: Add --date flag to specify the release date
The ghcup-metadata now has a viReleaseDay field which needs to be
populated with the day of the release.
- - - - -
bc478bee by Matthew Pickering at 2023-05-26T15:26:59-04:00
ghcup-metadata: Add dlOutput field
ghcup now requires us to add this field which specifies where it should
download the bindist to. See
https://gitlab.haskell.org/ghc/ghcup-metadata/-/issues/1 for some more
discussion.
- - - - -
2bdbd9da by Josh Meredith at 2023-05-26T15:27:35-04:00
JS: Convert rendering to use HLine instead of SDoc (#22455)
- - - - -
abd9e37c by Norman Ramsey at 2023-05-26T15:28:12-04:00
testsuite: add WasmControlFlow test
This patch adds the WasmControlFlow test to test the wasm backend's
relooper component.
- - - - -
07f858eb by Sylvain Henry at 2023-05-26T15:28:53-04:00
Factorize getLinkDeps
Prepare reuse of getLinkDeps for TH implementation in the JS backend
(cf #22261 and review of !9779).
- - - - -
fad9d092 by Oleg Grenrus at 2023-05-27T13:38:08-04:00
Change GHC.Driver.Session import to .DynFlags
Also move targetPlatform selector
Plenty of GHC needs just DynFlags.
Even more can be made to use .DynFlags if more selectors is migrated.
This is a low hanging fruit.
- - - - -
69fdbece by Alan Zimmerman at 2023-05-27T13:38:45-04:00
EPA: Better fix for #22919
The original fix for #22919 simply removed the ability to match up
prior comments with the first declaration in the file.
Restore it, but add a check that the comment is on a single line, by
ensuring that it comes immediately prior to the next thing (comment or
start of declaration), and that the token preceding it is not on the
same line.
closes #22919
- - - - -
0350b186 by Josh Meredith at 2023-05-29T12:46:27+00:00
Remove JavaScriptFFI from --supported-extensions for non-JS targets (#11214)
- - - - -
b4816919 by Matthew Pickering at 2023-05-30T17:07:43-04:00
testsuite: Pass -kb16k -kc128k for performance tests
Setting a larger stack chunk size gives a greater protection
from stack thrashing (where the repeated overflow/underflow allocates a lot of
stack chunks which sigificantly impact allocations). This
stabilises some tests against differences cause by more things being
pushed onto the stack.
The performance tests are generally testing work done by the compiler,
using allocation as a proxy, so removing/stabilising the allocations due
to the stack gives us more stable tests which are also more sensitive
to actual changes in compiler performance.
The tests which increase are ones where we compile a lot of modules, and
for each module we spawn a thread to compile the module in. Therefore
increasing these numbers has a multiplying effect on these tests because
there are many more stacks which we can increase in size.
The most significant improvements though are cases such as T8095 which
reduce significantly in allocations (30%). This isn't a performance
improvement really but just helps stabilise the test against this
threshold set by the defaults.
Fixes #23439
-------------------------
Metric Decrease:
InstanceMatching
T14683
T8095
T9872b_defer
T9872d
T9961
hie002
T19695
T3064
Metric Increase:
MultiLayerModules
T13701
T14697
-------------------------
- - - - -
6629f1c5 by Ben Gamari at 2023-05-30T17:08:20-04:00
Move via-C flags into GHC
These were previously hardcoded in configure (with no option for
overriding them) and simply passed onto ghc through the settings file.
Since configure already guarantees gcc supports those flags, we simply
move them into GHC.
- - - - -
981e5e11 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00
Allow CPR on unrestricted constructors
Per the new `Note [Linting linearity]`, we want optimisations over
trying to preserve linearity. This will allow CPR to handle `Ur`, in
particular.
- - - - -
bf9344d2 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00
Push coercions across multiplicity boundaries
Per the new `Note [Linting linearity]`, we want optimisations over
trying to preserve linearity. This will avoid preventing inlinings and
reductions and make linear programs more efficient.
- - - - -
d56dd695 by sheaf at 2023-05-31T11:37:12-04:00
Data.Bag: add INLINEABLE to polymorphic functions
This commit allows polymorphic methods in GHC.Data.Bag to be
specialised, avoiding having to pass explicit dictionaries when they
are instantiated with e.g. a known monad.
- - - - -
5366cd35 by sheaf at 2023-05-31T11:37:12-04:00
Split off TcBinderStack into its own module
This commit splits off TcBinderStack into its own module,
to avoid module cycles: we might want to refer to it without also
pulling in the TcM monad.
- - - - -
09d4d307 by sheaf at 2023-05-31T11:37:12-04:00
Split off TcRef into its own module
This helps avoid pull in the full TcM monad when we just want access
to mutable references in the typechecker. This facilitates later patches
which introduce a slimmed down TcM monad for zonking.
- - - - -
88cc19b3 by sheaf at 2023-05-31T11:37:12-04:00
Introduce Codensity monad
The Codensity monad is useful to write state-passing computations in
continuation-passing style, e.g. to implement a State monad as
continuation-passing style over a Reader monad.
- - - - -
f62d8195 by sheaf at 2023-05-31T11:37:12-04:00
Restructure the zonker
This commit splits up the zonker into a few separate components, described
in Note [The structure of the zonker] in `GHC.Tc.Zonk.Type`.
1. `GHC.Tc.Zonk.Monad` introduces a pared-down `TcM` monad, `ZonkM`,
which has enough information for zonking types.
This allows us to refactor `ErrCtxt` to use `ZonkM` instead of `TcM`,
which guarantees we don't throw an error while reporting an error.
2. `GHC.Tc.Zonk.Env` is the new home of `ZonkEnv`, and also defines
two zonking monad transformers, `ZonkT` and `ZonkBndrT`.
`ZonkT` is a reader monad transformer over `ZonkEnv`.
`ZonkBndrT m` is the codensity monad over `ZonkT m`.
`ZonkBndrT` is used for computations that accumulate binders
in the `ZonkEnv`.
3. `GHC.Tc.Zonk.TcType` contains the code for zonking types, for use
in the typechecker. It uses the `ZonkM` monad.
4. `GHC.Tc.Zonk.Type` contains the code for final zonking to `Type`,
which has been refactored to use `ZonkTcM = ZonkT TcM` and
`ZonkBndrTcM = ZonkBndrT TcM`.
Allocations slightly decrease on the whole due to using
continuation-passing style instead of manual state passing of ZonkEnv
in the final zonking to Type.
-------------------------
Metric Decrease:
T4029
T8095
T14766
T15304
hard_hole_fits
RecordUpdPerf
Metric Increase:
T10421
-------------------------
- - - - -
70526f5b by mimi.vx at 2023-05-31T11:37:53-04:00
Update rdt-theme to latest upstream version
Fixes https://gitlab.haskell.org/ghc/ghc/-/issues/23444
- - - - -
f3556d6c by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Restructure IPE buffer layout
Reference ticket #21766
This commit restructures IPE buffer list entries to not contain
references to their corresponding info tables. IPE buffer list nodes now
point to two lists of equal length, one holding the list of info table
pointers and one holding the corresponding entries for each info table.
This will allow the entry data to be compressed without losing the
references to the info tables.
- - - - -
5d1f2411 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add IPE compression to configure
Reference ticket #21766
Adds an `--enable-ipe-data-compreesion` flag to the configure script
which will check for libzstd and set the appropriate flags to allow for
IPE data compression in the compiler
- - - - -
b7a640ac by Finley McIlwaine at 2023-06-01T04:53:12-04:00
IPE data compression
Reference ticket #21766
When IPE data compression is enabled, compress the emitted IPE buffer
entries and decompress them in the RTS.
- - - - -
5aef5658 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix libzstd detection in configure and RTS
Ensure that `HAVE_LIBZSTD` gets defined to either 0 or 1 in all cases
and properly check that before IPE data decompression in the RTS. See
ticket #21766.
- - - - -
69563c97 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add note describing IPE data compression
See ticket #21766
- - - - -
7872e2b6 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix byte order of IPE data, fix IPE tests
Make sure byte order of written IPE buffer entries matches target.
Make sure the IPE-related tests properly access the fields of IPE buffer
entry nodes with the new IPE layout.
This commit also introduces checks to avoid importing modules if IPE
compression is not enabled.
See ticket #21766.
- - - - -
0e85099b by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix IPE data decompression buffer allocation
Capacity of buffers allocated for decompressed IPE data was
incorrect due to a misuse of the `ZSTD_findFrameCompressedSize`
function. Fix by always storing decompressed size of IPE data in IPE
buffer list nodes and using `ZSTD_findFrameCompressedSize` to determine
the size of the compressed data.
See ticket #21766
- - - - -
a0048866 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add optional dependencies to ./configure output
Changes the configure script to indicate whether libnuma, libzstd, or
libdw are being used as dependencies due to their optional features
being enabled.
- - - - -
09d93bd0 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add IPE-enabled builds to CI
- Adds an IPE job to the CI pipeline which is triggered by the ~IPE label
- Introduces CI logic to enable IPE data compression
- Enables uncompressed IPE data on debug CI job
- Regenerates jobs.yaml
MR https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/112 on the
images repository is meant to ensure that the proper images have
libzstd-dev installed.
- - - - -
3ded9a1c by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Update user's guide and release notes, small fixes
Add mention of IPE data compression to user's guide and the release
notes for 9.8.1. Also note the impact compression has on binary size in
both places.
Change IpeBufferListNode compression check so only the value `1`
indicates compression.
See ticket #21766
- - - - -
41b41577 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Remove IPE enabled builds from CI
We don't need to explicitly specify the +ipe transformer to test IPE data
since there are tests which manually enable IPE information. This commit does
leave zstd IPE data compression enabled on the debian CI jobs.
- - - - -
982bef3a by Krzysztof Gogolewski at 2023-06-01T04:53:49-04:00
Fix build with 9.2
GHC.Tc.Zonk.Type uses an equality constraint.
ghc.nix currently provides 9.2.
- - - - -
1c96bc3d by Krzysztof Gogolewski at 2023-06-01T10:56:11-04:00
Output Lint errors to stderr instead of stdout
This is a continuation of 7b095b99, which fixed warnings but not errors.
Refs #13342
- - - - -
8e81f140 by sheaf at 2023-06-01T10:56:51-04:00
Refactor lookupExactOrOrig & friends
This refactors the panoply of renamer lookup functions relating to
lookupExactOrOrig to more graciously handle Exact and Orig names.
In particular, we avoid the situation in which we would add Exact/Orig
GREs to the tcg_used_gres field, which could cause a panic in bestImport
like in #23240.
Fixes #23428
- - - - -
5d415bfd by Krzysztof Gogolewski at 2023-06-01T10:57:31-04:00
Use the one-shot trick for UM and RewriteM functors
As described in Note [The one-shot state monad trick],
we shouldn't use derived Functor instances for monads using
one-shot. This was done for most of them, but UM and RewriteM
were missed.
- - - - -
2c38551e by Krzysztof Gogolewski at 2023-06-01T10:58:08-04:00
Fix testsuite skipping Lint
setTestOpts() is used to modify the test options for an entire .T file,
rather than a single test.
If there was a test using collect_compiler_stats, all of the tests
in the same file had lint disabled.
Fixes #21247
- - - - -
00a1e50b by Krzysztof Gogolewski at 2023-06-01T10:58:44-04:00
Add testcases for already fixed #16432
They were fixed by 40c7daed0.
Fixes #16432
- - - - -
f6e060cc by Krzysztof Gogolewski at 2023-06-02T09:07:25-04:00
cleanup: Remove unused field from SelfBoot
It is no longer needed since Note [Extra dependencies from .hs-boot files]
was deleted in 6998772043.
I've also added tildes to Note headers, otherwise they're not detected
by the linter.
- - - - -
82eacab6 by sheaf at 2023-06-02T09:08:01-04:00
Delete GHC.Tc.Utils.Zonk
This module was split up into GHC.Tc.Zonk.Type and GHC.Tc.Zonk.TcType
in commit f62d8195, but I forgot to delete the original module
- - - - -
4a4eb761 by Ben Gamari at 2023-06-02T23:53:21-04:00
base: Add build-order import of GHC.Types in GHC.IO.Handle.Types
For reasons similar to those described in Note [Depend on
GHC.Num.Integer].
Fixes #23411.
- - - - -
f53ac0ae by Sylvain Henry at 2023-06-02T23:54:01-04:00
JS: fix and enhance non-minimized code generation (#22455)
Flag -ddisable-js-minimizer was producing invalid code. Fix that and
also a few other things to generate nicer JS code for debugging.
The added test checks that we don't regress when using the flag.
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f7744e8e by Andrey Mokhov at 2023-06-03T16:49:44-04:00
[hadrian] Fix multiline synopsis rendering
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b2c745db by Andrew Lelechenko at 2023-06-03T16:50:23-04:00
Elaborate on performance properties of Data.List.++
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7cd8a61e by Matthew Pickering at 2023-06-05T11:46:23+01:00
Big TcLclEnv and CtLoc refactoring
The overall goal of this refactoring is to reduce the dependency
footprint of the parser and syntax tree. Good reasons include:
- Better module graph parallelisability
- Make it easier to migrate error messages without introducing module loops
- Philosophically, there's not reason for the AST to depend on half the
compiler.
One of the key edges which added this dependency was
> GHC.Hs.Expr -> GHC.Tc.Types (TcLclEnv)
As this in turn depending on TcM which depends on HscEnv and so on.
Therefore the goal of this patch is to move `TcLclEnv` out of
`GHC.Tc.Types` so that `GHC.Hs.Expr` can import TcLclEnv without
incurring a huge dependency chain.
The changes in this patch are:
* Move TcLclEnv from GHC.Tc.Types to GHC.Tc.Types.LclEnv
* Create new smaller modules for the types used in TcLclEnv
New Modules:
- GHC.Tc.Types.ErrCtxt
- GHC.Tc.Types.BasicTypes
- GHC.Tc.Types.TH
- GHC.Tc.Types.LclEnv
- GHC.Tc.Types.CtLocEnv
- GHC.Tc.Errors.Types.PromotionErr
Removed Boot File:
- {-# SOURCE #-} GHC.Tc.Types
* Introduce TcLclCtxt, the part of the TcLclEnv which doesn't
participate in restoreLclEnv.
* Replace TcLclEnv in CtLoc with specific CtLocEnv which is defined in
GHC.Tc.Types.CtLocEnv. Use CtLocEnv in Implic and CtLoc to record the
location of the implication and constraint.
By splitting up TcLclEnv from GHC.Tc.Types we allow GHC.Hs.Expr to no
longer depend on the TcM monad and all that entails.
Fixes #23389 #23409
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3d8d39d1 by Matthew Pickering at 2023-06-05T11:46:23+01:00
Remove dependency of GHC.Tc.Utils.TcType on GHC.Driver.Session
This removes the usage of DynFlags from Tc.Utils.TcType so that it no
longer depends on GHC.Driver.Session. In general we don't want anything
which is a dependency of Language.Haskell.Syntax to depend on
GHC.Driver.Session and removing this edge gets us closer to that goal.
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18db5ada by Matthew Pickering at 2023-06-05T11:46:23+01:00
Move isIrrefutableHsPat to GHC.Rename.Utils and rename to isIrrefutableHsPatRn
This removes edge from GHC.Hs.Pat to GHC.Driver.Session, which makes
Language.Haskell.Syntax end up depending on GHC.Driver.Session.
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12919dd5 by Matthew Pickering at 2023-06-05T11:46:23+01:00
Remove dependency of GHC.Tc.Types.Constraint on GHC.Driver.Session
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eb852371 by Matthew Pickering at 2023-06-05T11:46:24+01:00
hole fit plugins: Split definition into own module
The hole fit plugins are defined in terms of TcM, a type we want to
avoid depending on from `GHC.Tc.Errors.Types`. By moving it into its own
module we can remove this dependency. It also simplifies the necessary
boot file.
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9e5246d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00
Move GHC.Core.Opt.CallerCC Types into separate module
This allows `GHC.Driver.DynFlags` to depend on these types without
depending on CoreM and hence the entire simplifier pipeline.
We can also remove a hs-boot file with this change.
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52d6a7d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00
Remove unecessary SOURCE import
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698d160c by Matthew Pickering at 2023-06-05T11:46:24+01:00
testsuite: Accept new output for CountDepsAst and CountDepsParser tests
These are in a separate commit as the improvement to these tests is the
cumulative effect of the previous set of patches rather than just the
responsibility of the last one in the patchset.
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58ccf02e by sheaf at 2023-06-05T16:00:47-04:00
TTG: only allow VarBind at GhcTc
The VarBind constructor of HsBind is only used at the GhcTc stage.
This commit makes that explicit by setting the extension field of
VarBind to be DataConCantHappen at all other stages.
This allows us to delete a dead code path in GHC.HsToCore.Quote.rep_bind,
and remove some panics.
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54b83253 by Matthew Craven at 2023-06-06T12:59:25-04:00
Generate Addr# access ops programmatically
The existing utils/genprimopcode/gen_bytearray_ops.py was
relocated and extended for this purpose. Additionally, hadrian
now knows about this script and uses it when generating primops.txt
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ecadbc7e by Matthew Pickering at 2023-06-06T13:00:01-04:00
ghcup-metadata: Only add Nightly tag when replacing LatestNightly
Previously we were always adding the Nightly tag, but this led to all
the previous builds getting an increasing number of nightly tags over
time. Now we just add it once, when we remove the LatestNightly tag.
- - - - -
4aea0a72 by Vladislav Zavialov at 2023-06-07T12:06:46+02:00
Invisible binders in type declarations (#22560)
This patch implements @k-binders introduced in GHC Proposal #425
and guarded behind the TypeAbstractions extension:
type D :: forall k j. k -> j -> Type
data D @k @j a b = ...
^^ ^^
To represent the new syntax, we modify LHsQTyVars as follows:
- hsq_explicit :: [LHsTyVarBndr () pass]
+ hsq_explicit :: [LHsTyVarBndr (HsBndrVis pass) pass]
HsBndrVis is a new data type that records the distinction between
type variable binders written with and without the @ sign:
data HsBndrVis pass
= HsBndrRequired
| HsBndrInvisible (LHsToken "@" pass)
The rest of the patch updates GHC, template-haskell, and haddock
to handle the new syntax.
Parser:
The PsErrUnexpectedTypeAppInDecl error message is removed.
The syntax it used to reject is now permitted.
Renamer:
The @ sign does not affect the scope of a binder, so the changes to
the renamer are minimal. See rnLHsTyVarBndrVisFlag.
Type checker:
There are three code paths that were updated to deal with the newly
introduced invisible type variable binders:
1. checking SAKS: see kcCheckDeclHeader_sig, matchUpSigWithDecl
2. checking CUSK: see kcCheckDeclHeader_cusk
3. inference: see kcInferDeclHeader, rejectInvisibleBinders
Helper functions bindExplicitTKBndrs_Q_Skol and bindExplicitTKBndrs_Q_Tv
are generalized to work with HsBndrVis.
Updates the haddock submodule.
Metric Increase:
MultiLayerModulesTH_OneShot
Co-authored-by: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
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b7600997 by Josh Meredith at 2023-06-07T13:10:21-04:00
JS: clean up FFI 'fat arrow' calls in base:System.Posix.Internals (#23481)
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e5d3940d by Sebastian Graf at 2023-06-07T18:01:28-04:00
Update CODEOWNERS
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960ef111 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Remove IPE enabled builds from CI"
This reverts commit 41b41577c8a28c236fa37e8f73aa1c6dc368d951.
- - - - -
bad1c8cc by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Update user's guide and release notes, small fixes"
This reverts commit 3ded9a1cd22f9083f31bc2f37ee1b37f9d25dab7.
- - - - -
12726d90 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add IPE-enabled builds to CI"
This reverts commit 09d93bd0305b0f73422ce7edb67168c71d32c15f.
- - - - -
dbdd989d by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add optional dependencies to ./configure output"
This reverts commit a00488665cd890a26a5564a64ba23ff12c9bec58.
- - - - -
240483af by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix IPE data decompression buffer allocation"
This reverts commit 0e85099b9316ee24565084d5586bb7290669b43a.
- - - - -
9b8c7dd8 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix byte order of IPE data, fix IPE tests"
This reverts commit 7872e2b6f08ea40d19a251c4822a384d0b397327.
- - - - -
3364379b by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add note describing IPE data compression"
This reverts commit 69563c97396b8fde91678fae7d2feafb7ab9a8b0.
- - - - -
fda30670 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix libzstd detection in configure and RTS"
This reverts commit 5aef5658ad5fb96bac7719710e0ea008bf7b62e0.
- - - - -
1cbcda9a by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "IPE data compression"
This reverts commit b7a640acf7adc2880e5600d69bcf2918fee85553.
- - - - -
fb5e99aa by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add IPE compression to configure"
This reverts commit 5d1f2411f4becea8650d12d168e989241edee186.
- - - - -
2cdcb3a5 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Restructure IPE buffer layout"
This reverts commit f3556d6cefd3d923b36bfcda0c8185abb1d11a91.
- - - - -
2b0c9f5e by Simon Peyton Jones at 2023-06-08T07:52:34+00:00
Don't report redundant Givens from quantified constraints
This fixes #23323
See (RC4) in Note [Tracking redundant constraints]
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567b32e1 by David Binder at 2023-06-08T18:41:29-04:00
Update the outdated instructions in HACKING.md on how to compile GHC
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2b1a4abe by Ryan Scott at 2023-06-09T07:56:58-04:00
Restore mingwex dependency on Windows
This partially reverts some of the changes in !9475 to make `base` and
`ghc-prim` depend on the `mingwex` library on Windows. It also restores the
RTS's stubs for `mingwex`-specific symbols such as `_lock_file`.
This is done because the C runtime provides `libmingwex` nowadays, and
moreoever, not linking against `mingwex` requires downstream users to link
against it explicitly in difficult-to-predict circumstances. Better to always
link against `mingwex` and prevent users from having to do the guesswork
themselves.
See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10360#note_495873 for
the discussion that led to this.
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28954758 by Ryan Scott at 2023-06-09T07:56:58-04:00
RtsSymbols.c: Remove mingwex symbol stubs
As of !9475, the RTS now links against `ucrt` instead of `msvcrt` on Windows,
which means that the RTS no longer needs to declare stubs for the `__mingw_*`
family of symbols. Let's remove these stubs to avoid confusion.
Fixes #23309.
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3ab0155b by Ryan Scott at 2023-06-09T07:57:35-04:00
Consistently use validity checks for TH conversion of data constructors
We were checking that TH-spliced data declarations do not look like this:
```hs
data D :: Type = MkD Int
```
But we were only doing so for `data` declarations' data constructors, not for
`newtype`s, `data instance`s, or `newtype instance`s. This patch factors out
the necessary validity checks into its own `cvtDataDefnCons` function and uses
it in all of the places where it needs to be.
Fixes #22559.
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a24b83dd by Matthew Pickering at 2023-06-09T15:19:00-04:00
Fix behaviour of -keep-tmp-files when used in OPTIONS_GHC pragma
This fixes the behaviour of -keep-tmp-files when used in an OPTIONS_GHC
pragma for files with module level scope.
Instead of simple not deleting the files, we also need to remove them
from the TmpFs so they are not deleted later on when all the other files
are deleted.
There are additional complications because you also need to remove the
directory where these files live from the TmpFs so we don't try to
delete those later either.
I added two tests.
1. Tests simply that -keep-tmp-files works at all with a single module
and --make mode.
2. The other tests that temporary files are deleted for other modules
which don't enable -keep-tmp-files.
Fixes #23339
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dcf32882 by Matthew Pickering at 2023-06-09T15:19:00-04:00
withDeferredDiagnostics: When debugIsOn, write landmine into IORef to catch use-after-free.
Ticket #23305 reports an error where we were attempting to use the
logger which was created by withDeferredDiagnostics after its scope had
ended.
This problem would have been caught by this patch and a validate build:
```
+*** Exception: Use after free
+CallStack (from HasCallStack):
+ error, called at compiler/GHC/Driver/Make.hs:<line>:<column> in <package-id>:GHC.Driver.Make
```
This general issue is tracked by #20981
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432c736c by Matthew Pickering at 2023-06-09T15:19:00-04:00
Don't return complete HscEnv from upsweep
By returning a complete HscEnv from upsweep the logger (as introduced by
withDeferredDiagnostics) was escaping the scope of
withDeferredDiagnostics and hence we were losing error messages.
This is reminiscent of #20981, which also talks about writing errors
into messages after their scope has ended.
See #23305 for details.
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26013cdc by Alexander McKenna at 2023-06-09T15:19:41-04:00
Dump `SpecConstr` specialisations separately
Introduce a `-ddump-spec-constr` flag which debugs specialisations from
`SpecConstr`. These are no longer shown when you use `-ddump-spec`.
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4639100b by Matthew Pickering at 2023-06-09T18:50:43-04:00
Add role annotations to SNat, SSymbol and SChar
Ticket #23454 explained it was possible to implement unsafeCoerce
because SNat was lacking a role annotation.
As these are supposed to be singleton types but backed by an efficient
representation the correct annotation is nominal to ensure these kinds
of coerces are forbidden.
These annotations were missed from https://github.com/haskell/core-libraries-committee/issues/85
which was implemented in 532de36870ed9e880d5f146a478453701e9db25d.
CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/170
Fixes #23454
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9c0dcff7 by Matthew Pickering at 2023-06-09T18:51:19-04:00
Remove non-existant bytearray-ops.txt.pp file from ghc.cabal.in
This broke the sdist generation.
Fixes #23489
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273ff0c7 by David Binder at 2023-06-09T18:52:00-04:00
Regression test T13438 is no longer marked as "expect_broken" in the testsuite driver.
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b84a2900 by Andrei Borzenkov at 2023-06-10T08:27:28-04:00
Fix -Wterm-variable-capture scope (#23434)
-Wterm-variable-capture wasn't accordant with type variable
scoping in associated types, in type classes. For example,
this code produced the warning:
k = 12
class C k a where
type AT a :: k -> Type
I solved this issue by reusing machinery of newTyVarNameRn function
that is accordand with associated types: it does lookup for each free type
variable when we are in the type class context. And in this patch I
use result of this work to make sure that -Wterm-variable-capture warns
only on implicitly quantified type variables.
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9d1a8d87 by Jorge Mendes at 2023-06-10T08:28:10-04:00
Remove redundant case statement in rts/js/mem.js.
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a1f350e2 by Oleg Grenrus at 2023-06-13T09:42:16-04:00
Change WarningWithFlag to plural WarningWithFlags
Resolves #22825
Now each diagnostic can name multiple different warning flags for its reason.
There is currently one use case: missing signatures.
Currently we need to check which warning flags are enabled when
generating the diagnostic, which is against the declarative nature of
the diagnostic framework.
This patch allows a warning diagnostic to have multiple warning flags,
which makes setup more declarative.
The WarningWithFlag pattern synonym is added for backwards compatibility
The 'msgEnvReason' field is added to MsgEnvelope to store the
`ResolvedDiagnosticReason`, which accounts for the enabled flags, and
then that is used for pretty printing the diagnostic.
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ec01f0ec by Matthew Pickering at 2023-06-13T09:42:59-04:00
Add a test Way for running ghci with Core optimizations
Tracking ticket: #23059
This runs compile_and_run tests with optimised code with bytecode
interpreter
Changed submodules: hpc, process
Co-authored-by: Torsten Schmits <git(a)tryp.io>
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c6741e72 by Rodrigo Mesquita at 2023-06-13T09:43:38-04:00
Configure -Qunused-arguments instead of hardcoding it
When GHC invokes clang, it currently passes -Qunused-arguments to
discard warnings resulting from GHC using multiple options that aren't
used.
In this commit, we configure -Qunused-arguments into the Cc options
instead of checking if the compiler is clang at runtime and hardcoding
the flag into GHC.
This is part of the effort to centralise toolchain information in
toolchain target files at configure time with the end goal of a runtime
retargetable GHC.
This also means we don't need to call getCompilerInfo ever, which
improves performance considerably (see !10589).
Metric Decrease:
PmSeriesG
T10421
T11303b
T12150
T12227
T12234
T12425
T13035
T13253-spj
T13386
T15703
T16875
T17836b
T17977
T17977b
T18140
T18282
T18304
T18698a
T18698b
T18923
T20049
T21839c
T3064
T5030
T5321FD
T5321Fun
T5837
T6048
T9020
T9198
T9872d
T9961
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0128db87 by Victor Cacciari Miraldo at 2023-06-13T09:44:18-04:00
Improve docs for Data.Fixed; adds 'realToFrac' as an option for conversion
between different precisions.
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95b69cfb by Ryan Scott at 2023-06-13T09:44:55-04:00
Add regression test for #23143
!10541, the fix for #23323, also fixes #23143. Let's add a regression test to
ensure that it stays fixed.
Fixes #23143.
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ed2dbdca by Emily Martins at 2023-06-13T09:45:37-04:00
delete GHCi.UI.Tags module and remove remaining references
Co-authored-by: Tilde Rose <t1lde(a)protonmail.com>
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c90d96e4 by Victor Cacciari Miraldo at 2023-06-13T09:46:26-04:00
Add regression test for 17328
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de58080c by Victor Cacciari Miraldo at 2023-06-13T09:46:26-04:00
Skip checking whether constructors are in scope when deriving
newtype instances.
Fixes #17328
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5e3c2b05 by Philip Hazelden at 2023-06-13T09:47:07-04:00
Don't suggest `DeriveAnyClass` when instance can't be derived.
Fixes #19692.
Prototypical cases:
class C1 a where
x1 :: a -> Int
data G1 = G1 deriving C1
class C2 a where
x2 :: a -> Int
x2 _ = 0
data G2 = G2 deriving C2
Both of these used to give this suggestion, but for C1 the suggestion
would have failed (generated code with undefined methods, which compiles
but warns). Now C2 still gives the suggestion but C1 doesn't.
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80a0b099 by David Binder at 2023-06-13T09:47:49-04:00
Add testcase for error GHC-00711 to testsuite
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e4b33a1d by Oleg Grenrus at 2023-06-14T07:01:21-04:00
Add -Wmissing-poly-kind-signatures
Implements #22826
This is a restricted version of -Wmissing-kind-signatures shown only for polykinded types.
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f8395b94 by doyougnu at 2023-06-14T07:02:01-04:00
ci: special case in req_host_target_ghc for JS
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b852a5b6 by Gergő Érdi at 2023-06-14T07:02:42-04:00
When forcing a `ModIface`, force the `MINIMAL` pragmas in class definitions
Fixes #23486
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c29b45ee by Krzysztof Gogolewski at 2023-06-14T07:03:19-04:00
Add a testcase for #20076
Remove 'recursive' in the error message, since the error
can arise without recursion.
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b80ef202 by Krzysztof Gogolewski at 2023-06-14T07:03:56-04:00
Use tcInferFRR to prevent bad generalisation
Fixes #23176
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bd8ef37d by Matthew Pickering at 2023-06-14T07:04:31-04:00
ci: Add dependenices on necessary aarch64 jobs for head.hackage ci
These need to be added since we started testing aarch64 on head.hackage
CI. The jobs will sometimes fail because they will start before the
relevant aarch64 job has finished.
Fixes #23511
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a0c27cee by Vladislav Zavialov at 2023-06-14T07:05:08-04:00
Add standalone kind signatures for Code and TExp
CodeQ and TExpQ already had standalone kind signatures
even before this change:
type TExpQ :: TYPE r -> Kind.Type
type CodeQ :: TYPE r -> Kind.Type
Now Code and TExp have signatures too:
type TExp :: TYPE r -> Kind.Type
type Code :: (Kind.Type -> Kind.Type) -> TYPE r -> Kind.Type
This is a stylistic change.
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e70c1245 by Tom Ellis at 2023-06-14T07:05:48-04:00
Warn that GHC.TypeLits.Internal should not be used
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100650e3 by Tom Ellis at 2023-06-14T07:05:48-04:00
Warn that GHC.TypeNats.Internal should not be used
- - - - -
078250ef by Jacco Krijnen at 2023-06-14T17:17:53-04:00
Add more flags for dumping core passes (#23491)
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1b7604af by Jacco Krijnen at 2023-06-14T17:17:53-04:00
Add tests for dumping flags (#23491)
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42000000 by Sebastian Graf at 2023-06-14T17:18:29-04:00
Provide a demand signature for atomicModifyMutVar.# (#23047)
Fixes #23047
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8f27023b by Ben Gamari at 2023-06-15T03:10:24-04:00
compiler: Cross-reference Note [StgToJS design]
In particular, the numeric representations are quite useful context in a
few places.
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a71b60e9 by Andrei Borzenkov at 2023-06-15T03:11:00-04:00
Implement the -Wimplicit-rhs-quantification warning (#23510)
GHC Proposal #425 "Invisible binders in type declarations" forbids
implicit quantification of type variables that occur free on the
right-hand side of a type synonym but are not mentioned on the left-hand side.
The users are expected to rewrite this using invisible binders:
type T1 :: forall a . Maybe a
type T1 = 'Nothing :: Maybe a -- old
type T1 @a = 'Nothing :: Maybe a -- new
Since the @k-binders are a new feature, we need to wait for three releases
before we require the use of the new syntax. In the meantime, we ought to
provide users with a new warning, -Wimplicit-rhs-quantification, that would
detect when such implicit quantification takes place, and include it in -Wcompat.
- - - - -
0078dd00 by Sven Tennie at 2023-06-15T03:11:36-04:00
Minor refactorings to mkSpillInstr and mkLoadInstr
Better error messages. And, use the existing `off` constant to reduce
duplication.
- - - - -
1792b57a by doyougnu at 2023-06-15T03:12:17-04:00
JS: merge util modules
Merge Core and StgUtil modules for StgToJS pass.
Closes: #23473
- - - - -
469ff08b by Vladislav Zavialov at 2023-06-15T03:12:57-04:00
Check visibility of nested foralls in can_eq_nc (#18863)
Prior to this change, `can_eq_nc` checked the visibility of the
outermost layer of foralls:
forall a. forall b. forall c. phi1
forall x. forall y. forall z. phi2
^^
up to here
Then it delegated the rest of the work to `can_eq_nc_forall`, which
split off all foralls:
forall a. forall b. forall c. phi1
forall x. forall y. forall z. phi2
^^
up to here
This meant that some visibility flags were completely ignored.
We fix this oversight by moving the check to `can_eq_nc_forall`.
- - - - -
59c9065b by Luite Stegeman at 2023-06-15T03:13:37-04:00
JS: use regular mask for blocking IO
Blocking IO used uninterruptibleMask which should make any thread
blocked on IO unreachable by async exceptions (such as those from
timeout). This changes it to a regular mask.
It's important to note that the nodejs runtime does not actually
interrupt the blocking IO when the Haskell thread receives an
async exception, and that file positions may be updated and buffers
may be written after the Haskell thread has already resumed.
Any file descriptor affected by an async exception interruption
should therefore be used with caution.
- - - - -
907c06c3 by Luite Stegeman at 2023-06-15T03:13:37-04:00
JS: nodejs: do not set 'readable' handler on stdin at startup
The Haskell runtime used to install a 'readable' handler on stdin
at startup in nodejs. This would cause the nodejs system to start
buffering the stream, causing data loss if the stdin file
descriptor is passed to another process.
This change delays installation of the 'readable' handler until
the first read of stdin by Haskell code.
- - - - -
a54b40a9 by Luite Stegeman at 2023-06-15T03:13:37-04:00
JS: reserve one more virtual (negative) file descriptor
This is needed for upcoming support of the process package
- - - - -
78cd1132 by Andrei Borzenkov at 2023-06-15T11:16:11+04:00
Report scoped kind variables at the type-checking phase (#16635)
This patch modifies the renamer to respect ScopedTypeVariables in kind
signatures. This means that kind variables bound by the outermost
`forall` now scope over the type:
type F = '[Right @a @() () :: forall a. Either a ()]
-- ^^^^^^^^^^^^^^^ ^^^
-- in scope here bound here
However, any use of such variables is a type error, because we don't
have type-level lambdas to bind them in Core. This is described in the
new Note [Type variable scoping errors during type check] in GHC.Tc.Types.
- - - - -
4a41ba75 by Sylvain Henry at 2023-06-15T18:09:15-04:00
JS: testsuite: use correct ticket number
Replace #22356 with #22349 for these tests because #22356 has been fixed
but now these tests fail because of #22349.
- - - - -
15f150c8 by Sylvain Henry at 2023-06-15T18:09:16-04:00
JS: testsuite: update ticket numbers
- - - - -
08d8e9ef by Sylvain Henry at 2023-06-15T18:09:16-04:00
JS: more triage
- - - - -
e8752e12 by Krzysztof Gogolewski at 2023-06-15T18:09:52-04:00
Fix test T18522-deb-ppr
Fixes #23509
- - - - -
62c56416 by Ben Price at 2023-06-16T05:52:39-04:00
Lint: more details on "Occurrence is GlobalId, but binding is LocalId"
This is helpful when debugging a pass which accidentally shadowed a
binder.
- - - - -
d4c10238 by Ryan Hendrickson at 2023-06-16T05:53:22-04:00
Clean a stray bit of text in user guide
- - - - -
93647b5c by Vladislav Zavialov at 2023-06-16T05:54:02-04:00
testsuite: Add forall visibility test cases
The added tests ensure that the type checker does not confuse
visible and invisible foralls.
VisFlag1: kind-checking type applications and inferred type variable instantiations
VisFlag1_ql: kind-checking Quick Look instantiations
VisFlag2: kind-checking type family instances
VisFlag3: checking kind annotations on type parameters of associated type families
VisFlag4: checking kind annotations on type parameters in type declarations with SAKS
VisFlag5: checking the result kind annotation of data family instances
- - - - -
a5f0c00e by Sylvain Henry at 2023-06-16T12:25:40-04:00
JS: factorize SaneDouble into its own module
Follow-up of b159e0e9 whose ticket is #22736
- - - - -
0baf9e7c by Krzysztof Gogolewski at 2023-06-16T12:26:17-04:00
Add tests for #21973
- - - - -
640ea90e by Diego Diverio at 2023-06-16T23:07:55-04:00
Update documentation for `<**>`
- - - - -
2469a813 by Diego Diverio at 2023-06-16T23:07:55-04:00
Update text
- - - - -
1f515bbb by Diego Diverio at 2023-06-16T23:07:55-04:00
Update examples
- - - - -
7af99a0d by Diego Diverio at 2023-06-16T23:07:55-04:00
Update documentation to actually display code correctly
- - - - -
800aad7e by Andrei Borzenkov at 2023-06-16T23:08:32-04:00
Type/data instances: require that variables on the RHS are mentioned on the LHS (#23512)
GHC Proposal #425 "Invisible binders in type declarations" restricts the
scope of type and data family instances as follows:
In type family and data family instances, require that every variable
mentioned on the RHS must also occur on the LHS.
For example, here are three equivalent type instance definitions accepted before this patch:
type family F1 a :: k
type instance F1 Int = Any :: j -> j
type family F2 a :: k
type instance F2 @(j -> j) Int = Any :: j -> j
type family F3 a :: k
type instance forall j. F3 Int = Any :: j -> j
- In F1, j is implicitly quantified and it occurs only on the RHS;
- In F2, j is implicitly quantified and it occurs both on the LHS and the RHS;
- In F3, j is explicitly quantified.
Now F1 is rejected with an out-of-scope error, while F2 and F3 continue to be accepted.
- - - - -
9132d529 by Sylvain Henry at 2023-06-18T02:50:34-04:00
JS: testsuite: use correct ticket numbers
- - - - -
c3a1274c by Sylvain Henry at 2023-06-18T02:50:34-04:00
JS: don't dump eventlog to stderr by default
Fix T16707
Bump stm submodule
- - - - -
89bb8ad8 by Ryan Hendrickson at 2023-06-18T02:51:14-04:00
Fix TH name lookup for symbolic tycons (#23525)
- - - - -
cb9e1ce4 by Finley McIlwaine at 2023-06-18T21:16:45-06:00
IPE data compression
IPE data resulting from the `-finfo-table-map` flag may now be
compressed by configuring the GHC build with the
`--enable-ipe-data-compression` flag. This results in about a 20%
reduction in the size of IPE-enabled build results.
The compression library, zstd, may optionally be statically linked by
configuring with the `--enabled-static-libzstd` flag (on non-darwin
platforms)
libzstd version 1.4.0 or greater is required.
- - - - -
0cbc3ae0 by Gergő Érdi at 2023-06-19T09:11:38-04:00
Add `IfaceWarnings` to represent the `ModIface`-storable parts
of a `Warnings GhcRn`.
Fixes #23516
- - - - -
3e80c2b4 by Arnaud Spiwack at 2023-06-20T03:19:41-04:00
Avoid desugaring non-recursive lets into recursive lets
This prepares for having linear let expressions in the frontend.
When desugaring lets, SPECIALISE statements create more copies of a
let binding. Because of the rewrite rules attached to the bindings,
there are dependencies between the generated binds.
Before this commit, we simply wrapped all these in a mutually
recursive let block, and left it to the simplified to sort it out.
With this commit: we are careful to generate the bindings in
dependency order, so that we can wrap them in consecutive lets (if the
source is non-recursive).
- - - - -
9fad49e0 by Ben Gamari at 2023-06-20T03:20:19-04:00
rts: Do not call exit() from SIGINT handler
Previously `shutdown_handler` would call `stg_exit` if the scheduler was
Oalready found to be in `SCHED_INTERRUPTING` state (or higher). However,
`stg_exit` is not signal-safe as it calls `exit` (which calls `atexit`
handlers). The only safe thing to do in this situation is to call
`_exit`, which terminates with minimal cleanup.
Fixes #23417.
- - - - -
7485f848 by Andrew Lelechenko at 2023-06-20T03:20:57-04:00
Bump Cabal submodule
This requires changing the recomp007 test because now cabal passes
`this-unit-id` to executable components, and that unit-id contains a
hash which includes the ABI of the dependencies. Therefore changing the
dependencies means that -this-unit-id changes and recompilation is
triggered.
The spririt of the test is to test GHC's recompilation logic assuming
that `-this-unit-id` is constant, so we explicitly pass `-ipid` to
`./configure` rather than letting `Cabal` work it out.
- - - - -
1464a2a8 by mangoiv at 2023-06-20T03:21:34-04:00
[feat] add a hint to `HasField` error message
- add a hint that indicates that the record that the record dot is used
on might just be missing a field
- as the intention of the programmer is not entirely clear, it is only
shown if the type is known
- This addresses in part issue #22382
- - - - -
b65e78dd by Ben Gamari at 2023-06-20T16:56:43-04:00
rts/ipe: Fix unused lock warning
- - - - -
6086effd by Ben Gamari at 2023-06-20T16:56:44-04:00
rts/ProfilerReportJson: Fix memory leak
- - - - -
1e48c434 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Various warnings fixes
- - - - -
471486b9 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix printf format mismatch
- - - - -
80603fb3 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix incorrect #include <sys/poll.h>
According to Alpine's warnings and poll(2), <poll.h> should be
preferred.
- - - - -
ff18e6fd by Ben Gamari at 2023-06-20T16:56:44-04:00
nonmoving: Fix unused definition warrnings
- - - - -
6e7fe8ee by Ben Gamari at 2023-06-20T16:56:44-04:00
Disable futimens on Darwin.
See #22938
- - - - -
b7706508 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix incorrect CPP guard
- - - - -
94f00e9b by Ben Gamari at 2023-06-20T16:56:44-04:00
hadrian: Ensure that -Werror is passed when compiling the RTS.
Previously the `+werror` transformer would only pass `-Werror` to GHC,
which does not ensure that the same is passed to the C compiler when
building the RTS. Arguably this is itself a bug but for now we will just
work around this by passing `-optc-Werror` to GHC.
I tried to enable `-Werror` in all C compilations but the boot libraries
are something of a portability nightmare.
- - - - -
5fb54bf8 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Disable `#pragma GCC`s on clang compilers
Otherwise the build fails due to warnings. See #23530.
- - - - -
cf87f380 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix capitalization of prototype
- - - - -
17f250d7 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix incorrect format specifier
- - - - -
0ff1c501 by Josh Meredith at 2023-06-20T16:57:20-04:00
JS: remove js_broken(22576) in favour of the pre-existing wordsize(32) condition (#22576)
- - - - -
3d1d42b7 by Finley McIlwaine at 2023-06-21T12:04:58-04:00
Memory usage fixes for Haddock
- Do not include `mi_globals` in the `NoBackend` backend. It was only included
for Haddock, but Haddock does not actually need it. This causes a 200MB
reduction in max residency when generating haddocks on the Agda codebase
(roughly 1GB to 800MB).
- Make haddock_{parser,renamer}_perf tests more accurate by forcing docs to
be written to interface files using `-fwrite-interface`
Bumps haddock submodule.
Metric Decrease:
haddock.base
- - - - -
8185b1c2 by Finley McIlwaine at 2023-06-21T12:04:58-04:00
Fix associated data family doc structure items
Associated data families were being given their own export DocStructureItems,
which resulted in them being documented separately from their classes in
haddocks. This commit fixes it.
- - - - -
4d356ea3 by Sylvain Henry at 2023-06-21T12:04:59-04:00
JS: implement TH support
- Add ghc-interp.js bootstrap script for the JS interpreter
- Interactively link and execute iserv code from the ghci package
- Incrementally load and run JS code for splices into the running iserv
Co-authored-by: Luite Stegeman <stegeman(a)gmail.com>
- - - - -
3249cf12 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Don't use getKey
- - - - -
f84ff161 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Stg: return imported FVs
This is used to determine what to link when using the interpreter.
For now it's only used by the JS interpreter but it could easily be used
by the native interpreter too (instead of extracting names from compiled BCOs).
- - - - -
fab2ad23 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Fix some recompilation avoidance tests
- - - - -
a897dc13 by Sylvain Henry at 2023-06-21T12:04:59-04:00
TH_import_loop is now broken as expected
- - - - -
dbb4ad51 by Sylvain Henry at 2023-06-21T12:04:59-04:00
JS: always recompile when TH is enabled (cf #23013)
- - - - -
711b1d24 by Bartłomiej Cieślar at 2023-06-21T12:59:27-04:00
Add support for deprecating exported items (proposal #134)
This is an implementation of the deprecated exports proposal #134.
The proposal introduces an ability to introduce warnings to exports.
This allows for deprecating a name only when it is exported from a specific
module, rather than always depreacting its usage. In this example:
module A ({-# DEPRECATED "do not use" #-} x) where
x = undefined
---
module B where
import A(x)
`x` will emit a warning when it is explicitly imported.
Like the declaration warnings, export warnings are first accumulated within
the `Warnings` struct, then passed into the ModIface, from which they are
then looked up and warned about in the importing module in the `lookup_ie`
helpers of the `filterImports` function (for the explicitly imported names)
and in the `addUsedGRE(s)` functions where they warn about regular usages
of the imported name.
In terms of the AST information, the custom warning is stored in the
extension field of the variants of the `IE` type (see Trees that Grow for
more information).
The commit includes a bump to the haddock submodule added in MR #28
Signed-off-by: Bartłomiej Cieślar <bcieslar2001(a)gmail.com>
- - - - -
c1865854 by Ben Gamari at 2023-06-21T12:59:30-04:00
configure: Bump version to 9.8
Bumps Haddock submodule
- - - - -
4e1de71c by Ben Gamari at 2023-06-21T21:07:48-04:00
configure: Bump version to 9.9
Bumps haddock submodule.
- - - - -
5b6612bc by Ben Gamari at 2023-06-23T03:56:49-04:00
rts: Work around missing prototypes errors
Darwin's toolchain inexpliciably claims that `write_barrier` and friends
have declarations without prototypes, despite the fact that (a) they are
definitions, and (b) the prototypes appear only a few lines above. Work
around this by making the definitions proper prototypes.
- - - - -
43b66a13 by Matthew Pickering at 2023-06-23T03:57:26-04:00
ghcup-metadata: Fix date modifier (M = minutes, m = month)
Fixes #23552
- - - - -
564164ef by Luite Stegeman at 2023-06-24T10:27:29+09:00
Support large stack frames/offsets in GHCi bytecode interpreter
Bytecode instructions like PUSH_L (push a local variable) contain
an operand that refers to the stack slot. Before this patch, the
operand type was SmallOp (Word16), limiting the maximum stack
offset to 65535 words. This could cause compiler panics in some
cases (See #22888).
This patch changes the operand type for stack offsets from
SmallOp to Op, removing the stack offset limit.
Fixes #22888
- - - - -
8d6574bc by Sylvain Henry at 2023-06-26T13:15:06-04:00
JS: support levity-polymorphic datatypes (#22360,#22291)
- thread knowledge about levity into PrimRep instead of panicking
- JS: remove assumption that unlifted heap objects are rts objects (TVar#, etc.)
Doing this also fixes #22291 (test added).
There is a small performance hit (~1% more allocations).
Metric Increase:
T18698a
T18698b
- - - - -
5578bbad by Matthew Pickering at 2023-06-26T13:15:43-04:00
MR Review Template: Mention "Blocked on Review" label
In order to improve our MR review processes we now have the label
"Blocked on Review" which allows people to signal that a MR is waiting
on a review to happen.
See: https://mail.haskell.org/pipermail/ghc-devs/2023-June/021255.html
- - - - -
4427e9cf by Matthew Pickering at 2023-06-26T13:15:43-04:00
Move MR template to Default.md
This makes it more obvious what you have to modify to affect the default
template rather than looking in the project settings.
- - - - -
522bd584 by Arnaud Spiwack at 2023-06-26T13:16:33-04:00
Revert "Avoid desugaring non-recursive lets into recursive lets"
This (temporary) reverts commit 3e80c2b40213bebe302b1bd239af48b33f1b30ef.
Fixes #23550
- - - - -
c59fbb0b by Torsten Schmits at 2023-06-26T19:34:20+02:00
Propagate breakpoint information when inlining across modules
Tracking ticket: #23394
MR: !10448
* Add constructor `IfaceBreakpoint` to `IfaceTickish`
* Store breakpoint data in interface files
* Store `BreakArray` for the breakpoint's module, not the current module, in BCOs
* Store module name in BCOs instead of `Unique`, since the `Unique` from an `Iface` doesn't match the modules in GHCi's
state
* Allocate module name in `ModBreaks`, like `BreakArray`
* Lookup breakpoint by module name in GHCi
* Skip creating breakpoint instructions when no `ModBreaks` are available, rather than injecting `ModBreaks` in the
linker when breakpoints are enabled, and panicking when `ModBreaks` is missing
- - - - -
6f904808 by Greg Steuck at 2023-06-27T16:53:07-04:00
Remove undefined FP_PROG_LD_BUILD_ID from configure.ac's
- - - - -
e89aa072 by Andrei Borzenkov at 2023-06-27T16:53:44-04:00
Remove arity inference in type declarations (#23514)
Arity inference in type declarations was introduced
as a workaround for the lack of @k-binders.
They were added in 4aea0a72040, so I simplified all
of this by simply removing arity inference altogether.
This is part of GHC Proposal #425 "Invisible binders in type
declarations".
- - - - -
459dee1b by Torsten Schmits at 2023-06-27T16:54:20-04:00
Relax defaulting of RuntimeRep/Levity when printing
Fixes #16468
MR: !10702
Only default RuntimeRep to LiftedRep when variables are bound by the toplevel forall
- - - - -
151f8f18 by Torsten Schmits at 2023-06-27T16:54:57-04:00
Remove duplicate link label in linear types docs
- - - - -
ecdc4353 by Rodrigo Mesquita at 2023-06-28T12:24:57-04:00
Stop configuring unused Ld command in `settings`
GHC has no direct dependence on the linker. Rather, we depend upon the C
compiler for linking and an object-merging program (which is typically
`ld`) for production of GHCi objects and merging of C stubs into final
object files.
Despite this, for historical reasons we still recorded information about
the linker into `settings`. Remove these entries from `settings`,
`hadrian/cfg/system.config`, as well as the `configure` logic
responsible for this information.
Closes #23566.
- - - - -
bf9ec3e4 by Bryan Richter at 2023-06-28T12:25:33-04:00
Remove extraneous debug output
- - - - -
7eb68dd6 by Bryan Richter at 2023-06-28T12:25:33-04:00
Work with unset vars in -e mode
- - - - -
49c27936 by Bryan Richter at 2023-06-28T12:25:33-04:00
Pass positional arguments in their positions
By quoting $cmd, the default "bash -i" is a single argument to run, and
no file named "bash -i" actually exists to be run.
- - - - -
887dc4fc by Bryan Richter at 2023-06-28T12:25:33-04:00
Handle unset value in -e context
- - - - -
5ffc7d7b by Rodrigo Mesquita at 2023-06-28T21:07:36-04:00
Configure CPP into settings
There is a distinction to be made between the Haskell Preprocessor and
the C preprocessor. The former is used to preprocess Haskell files,
while the latter is used in C preprocessing such as Cmm files.
In practice, they are both the same program (usually the C compiler) but
invoked with different flags.
Previously we would, at configure time, configure the haskell
preprocessor and save the configuration in the settings file, but,
instead of doing the same for CPP, we had hardcoded in GHC that the CPP
program was either `cc -E` or `cpp`.
This commit fixes that asymmetry by also configuring CPP at configure
time, and tries to make more explicit the difference between HsCpp and
Cpp (see Note [Preprocessing invocations]).
Note that we don't use the standard CPP and CPPFLAGS to configure Cpp,
but instead use the non-standard --with-cpp and --with-cpp-flags.
The reason is that autoconf sets CPP to "$CC -E", whereas we expect the
CPP command to be configured as a standalone executable rather than a
command. These are symmetrical with --with-hs-cpp and
--with-hs-cpp-flags.
Cleanup: Hadrian no longer needs to pass the CPP configuration for CPP
to be C99 compatible through -optP, since we now configure that
into settings.
Closes #23422
- - - - -
5efa9ca5 by Ben Gamari at 2023-06-28T21:08:13-04:00
hadrian: Always canonicalize topDirectory
Hadrian's `topDirectory` is intended to provide an absolute path to the
root of the GHC tree. However, if the tree is reached via a symlink this
One question here is whether the `canonicalizePath` call is expensive
enough to warrant caching. In a quick microbenchmark I observed that
`canonicalizePath "."` takes around 10us per call; this seems
sufficiently low not to worry.
Alternatively, another approach here would have been to rather move the
canonicalization into `m4/fp_find_root.m4`. This would have avoided
repeated canonicalization but sadly path canonicalization is a hard
problem in POSIX shell.
Addresses #22451.
- - - - -
b3e1436f by aadaa_fgtaa at 2023-06-28T21:08:53-04:00
Optimise ELF linker (#23464)
- cache last elements of `relTable`, `relaTable` and `symbolTables` in `ocInit_ELF`
- cache shndx table in ObjectCode
- run `checkProddableBlock` only with debug rts
- - - - -
30525b00 by Ben Gamari at 2023-06-28T21:09:30-04:00
compiler: Introduce MO_{ACQUIRE,RELEASE}_FENCE
- - - - -
b787e259 by Ben Gamari at 2023-06-28T21:09:30-04:00
compiler: Drop MO_WriteBarrier
rts: Drop write_barrier
- - - - -
7550b4a5 by Ben Gamari at 2023-06-28T21:09:30-04:00
rts: Drop load_store_barrier()
This is no longer used.
- - - - -
d5f2875e by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Drop last instances of prim_{write,read}_barrier
- - - - -
965ac2ba by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Eliminate remaining uses of load_load_barrier
- - - - -
0fc5cb97 by Sven Tennie at 2023-06-28T21:09:31-04:00
compiler: Drop MO_ReadBarrier
- - - - -
7a7d326c by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Drop load_load_barrier
This is no longer used.
- - - - -
9f63da66 by Sven Tennie at 2023-06-28T21:09:31-04:00
Delete write_barrier function
- - - - -
bb0ed354 by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Make collectFreshWeakPtrs definition a prototype
x86-64/Darwin's toolchain inexplicably warns that collectFreshWeakPtrs
needs to be a prototype.
- - - - -
ef81a1eb by Sven Tennie at 2023-06-28T21:10:08-04:00
Fix number of free double regs
D1..D4 are defined for aarch64 and thus not free.
- - - - -
c335fb7c by Ryan Scott at 2023-06-28T21:10:44-04:00
Fix typechecking of promoted empty lists
The `'[]` case in `tc_infer_hs_type` is smart enough to handle arity-0 uses of
`'[]` (see the newly added `T23543` test case for an example), but the `'[]`
case in `tc_hs_type` was not. We fix this by changing the `tc_hs_type` case to
invoke `tc_infer_hs_type`, as prescribed in `Note [Future-proofing the type
checker]`.
There are some benign changes to test cases' expected output due to the new
code path using `forall a. [a]` as the kind of `'[]` rather than `[k]`.
Fixes #23543.
- - - - -
fcf310e7 by Rodrigo Mesquita at 2023-06-28T21:11:21-04:00
Configure MergeObjs supports response files rather than Ld
The previous configuration script to test whether Ld supported response
files was
* Incorrect (see #23542)
* Used, in practice, to check if the *merge objects tool* supported
response files.
This commit modifies the macro to run the merge objects tool (rather
than Ld), using a response file, and checking the result with $NM
Fixes #23542
- - - - -
78b2f3cc by Sylvain Henry at 2023-06-28T21:12:02-04:00
JS: fix JS stack printing (#23565)
- - - - -
9f01d14b by Matthew Pickering at 2023-06-29T04:13:41-04:00
Add -fpolymorphic-specialisation flag (off by default at all optimisation levels)
Polymorphic specialisation has led to a number of hard to diagnose
incorrect runtime result bugs (see #23469, #23109, #21229, #23445) so
this commit introduces a flag `-fpolymorhphic-specialisation` which
allows users to turn on this experimental optimisation if they are
willing to buy into things going very wrong.
Ticket #23469
- - - - -
b1e611d5 by Ben Gamari at 2023-06-29T04:14:17-04:00
Rip out runtime linker/compiler checks
We used to choose flags to pass to the toolchain at runtime based on the
platform running GHC, and in this commit we drop all of those runtime
linker checks
Ultimately, this represents a change in policy: We no longer adapt at
runtime to the toolchain being used, but rather make final decisions
about the toolchain used at /configure time/
(we have deleted Note [Run-time linker info] altogether!).
This works towards the goal of having all toolchain configuration logic
living in the same place, which facilities the work towards a
runtime-retargetable GHC (see #19877).
As of this commit, the runtime linker/compiler logic was moved to
autoconf, but soon it, and the rest of the existing toolchain
configuration logic, will live in the standalone ghc-toolchain program
(see !9263)
In particular, what used to be done at runtime is now as follows:
* The flags -Wl,--no-as-needed for needed shared libs are configured
into settings
* The flag -fstack-check is configured into settings
* The check for broken tables-next-to-code was outdated
* We use the configured c compiler by default as the assembler program
* We drop `asmOpts` because we already configure -Qunused-arguments flag
into settings (see !10589)
Fixes #23562
Co-author: Rodrigo Mesquita (@alt-romes)
- - - - -
8b35e8ca by Ben Gamari at 2023-06-29T18:46:12-04:00
Define FFI_GO_CLOSURES
The libffi shipped with Apple's XCode toolchain does not contain a
definition of the FFI_GO_CLOSURES macro, despite containing references
to said macro. Work around this by defining the macro, following the
model of a similar workaround in OpenJDK [1].
[1] https://github.com/openjdk/jdk17u-dev/pull/741/files
- - - - -
d7ef1704 by Ben Gamari at 2023-06-29T18:46:12-04:00
base: Fix incorrect CPP guard
This was guarded on `darwin_HOST_OS` instead of `defined(darwin_HOST_OS)`.
- - - - -
7c7d1f66 by Ben Gamari at 2023-06-29T18:46:48-04:00
rts/Trace: Ensure that debugTrace arguments are used
As debugTrace is a macro we must take care to ensure that
the fact is clear to the compiler lest we see warnings.
- - - - -
cb92051e by Ben Gamari at 2023-06-29T18:46:48-04:00
rts: Various warnings fixes
- - - - -
dec81dd1 by Ben Gamari at 2023-06-29T18:46:48-04:00
hadrian: Ignore warnings in unix and semaphore-compat
- - - - -
d7f6448a by Matthew Pickering at 2023-06-30T12:38:43-04:00
hadrian: Fix dependencies of docs:* rule
For the docs:* rule we need to actually build the package rather than
just the haddocks for the dependent packages. Therefore we depend on the
.conf files of the packages we are trying to build documentation for as
well as the .haddock files.
Fixes #23472
- - - - -
cec90389 by sheaf at 2023-06-30T12:39:27-04:00
Add tests for #22106
Fixes #22106
- - - - -
083794b1 by Torsten Schmits at 2023-07-03T03:27:27-04:00
Add -fbreak-points to control breakpoint insertion
Rather than statically enabling breakpoints only for the interpreter,
this adds a new flag.
Tracking ticket: #23057
MR: !10466
- - - - -
fd8c5769 by Ben Gamari at 2023-07-03T03:28:04-04:00
rts: Ensure that pinned allocations respect block size
Previously, it was possible for pinned, aligned allocation requests to
allocate beyond the end of the pinned accumulator block. Specifically,
we failed to account for the padding needed to achieve the requested
alignment in the "large object" check. With large alignment requests,
this can result in the allocator using the capability's pinned object
accumulator block to service a request which is larger than
`PINNED_EMPTY_SIZE`.
To fix this we reorganize `allocatePinned` to consistently account for
the alignment padding in all large object checks. This is a bit subtle
as we must handle the case of a small allocation request filling the
accumulator block, as well as large requests.
Fixes #23400.
- - - - -
98185d52 by Ben Gamari at 2023-07-03T03:28:05-04:00
testsuite: Add test for #23400
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4aac0540 by Ben Gamari at 2023-07-03T03:28:42-04:00
ghc-heap: Support for BLOCKING_QUEUE closures
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03f941f4 by Ben Bellick at 2023-07-03T03:29:29-04:00
Add some structured diagnostics in Tc/Validity.hs
This addresses the work of ticket #20118
Created the following constructors for TcRnMessage
- TcRnInaccessibleCoAxBranch
- TcRnPatersonCondFailure
- - - - -
6074cc3c by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Add failing test case for #23492
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356a2692 by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Use generated src span for catch-all case of record selector functions
This fixes #23492. The problem was that we used the real source span
of the field declaration for the generated catch-all case in the
selector function, in particular in the generated call to
`recSelError`, which meant it was included in the HIE output. Using
`generatedSrcSpan` instead means that it is not included.
- - - - -
3efe7f39 by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Introduce genLHsApp and genLHsLit helpers in GHC.Rename.Utils
- - - - -
dd782343 by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Construct catch-all default case using helpers
GHC.Rename.Utils concrete helpers instead of wrapGenSpan + HS AST constructors
- - - - -
0e09c38e by Ryan Hendrickson at 2023-07-03T03:30:56-04:00
Add regression test for #23549
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32741743 by Alexis King at 2023-07-03T03:31:36-04:00
perf tests: Increase default stack size for MultiLayerModules
An unhelpfully small stack size appears to have been the real culprit
behind the metric fluctuations in #19293. Debugging metric decreases
triggered by !10729 helped to finally identify the problem.
Metric Decrease:
MultiLayerModules
MultiLayerModulesTH_Make
T13701
T14697
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82ac6bf1 by Bryan Richter at 2023-07-03T03:32:15-04:00
Add missing void prototypes to rts functions
See #23561.
- - - - -
6078b429 by Ben Gamari at 2023-07-03T03:32:51-04:00
gitlab-ci: Refactor compilation of gen_ci
Flakify and document it, making it far less sensitive to the build
environment.
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aa2db0ae by Ben Gamari at 2023-07-03T03:33:29-04:00
testsuite: Update documentation
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924a2362 by Gregory Gerasev at 2023-07-03T03:34:10-04:00
Better error for data deriving of type synonym/family. Closes #23522
- - - - -
4457da2a by Dave Barton at 2023-07-03T03:34:51-04:00
Fix some broken links and typos
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de5830d0 by Ben Gamari at 2023-07-04T22:03:59-04:00
configure: Rip out Solaris dyld check
Solaris 11 was released over a decade ago and, moreover, I doubt we have
any Solaris users
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59c5fe1d by doyougnu at 2023-07-04T22:04:56-04:00
CI: add JS release and debug builds, regen CI jobs
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679bbc97 by Vladislav Zavialov at 2023-07-04T22:05:32-04:00
testsuite: Do not require CUSKs
Numerous tests make use of CUSKs (complete user-supplied kinds),
a legacy feature scheduled for deprecation. In order to proceed
with the said deprecation, the tests have been updated to use SAKS
instead (standalone kind signatures).
This also allows us to remove the Haskell2010 language pragmas that
were added in 115cd3c85a8 to work around the lack of CUSKs in GHC2021.
- - - - -
945d3599 by Ben Gamari at 2023-07-04T22:06:08-04:00
gitlab: Drop backport-for-8.8 MR template
Its usefulness has long passed.
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66c721d3 by Alan Zimmerman at 2023-07-04T22:06:44-04:00
EPA: Simplify GHC/Parser.y comb2
Use the HasLoc instance from Ast.hs to allow comb2 to work with
anything with a SrcSpan
This gets rid of the custom comb2A, comb2Al, comb2N functions, and
removes various reLoc calls.
- - - - -
2be99b7e by Matthew Pickering at 2023-07-04T22:07:21-04:00
Fix deprecation warning when deprecated identifier is from another module
A stray 'Just' was being printed in the deprecation message.
Fixes #23573
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46c9bcd6 by Ben Gamari at 2023-07-04T22:07:58-04:00
rts: Don't rely on initializers for sigaction_t
As noted in #23577, CentOS's ancient toolchain throws spurious
missing-field-initializer warnings.
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ec55035f by Ben Gamari at 2023-07-04T22:07:58-04:00
hadrian: Don't treat -Winline warnings as fatal
Such warnings are highly dependent upon the toolchain, platform, and
build configuration. It's simply too fragile to rely on these.
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3a09b789 by Ben Gamari at 2023-07-04T22:07:58-04:00
hadrian: Only pass -Wno-nonportable-include-path on Darwin
This flag, which was introduced due to #17798, is only understood by
Clang and consequently throws warnings on platforms using gcc. Sadly,
there is no good way to treat such warnings as non-fatal with `-Werror`
so for now we simply make this flag specific to platforms known to use
Clang and case-insensitive filesystems (Darwin and Windows).
See #23577.
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4af7eac2 by Mario Blažević at 2023-07-04T22:08:38-04:00
Fixed ticket #23571, TH.Ppr.pprLit hanging on large numeric literals
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2304c697 by Ben Gamari at 2023-07-04T22:09:15-04:00
compiler: Make OccSet opaque
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cf735db8 by Andrei Borzenkov at 2023-07-04T22:09:51-04:00
Add Note about why we need forall in Code to be on the right
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fb140f82 by Hécate Moonlight at 2023-07-04T22:10:34-04:00
Relax the constraint about the foreign function's calling convention of FinalizerPtr to capi as well as ccall.
- - - - -
9ce44336 by meooow25 at 2023-07-05T11:42:37-04:00
Improve the situation with the stimes cycle
Currently the Semigroup stimes cycle is resolved in GHC.Base by
importing stimes implementations from a hs-boot file. Resolve the cycle
using hs-boot files for required classes (Num, Integral) instead. Now
stimes can be defined directly in GHC.Base, making inlining and
specialization possible.
This leads to some new boot files for `GHC.Num` and `GHC.Real`, the
methods for those are only used to implement `stimes` so it doesn't
appear that these boot files will introduce any new performance traps.
Metric Decrease:
T13386
T8095
Metric Increase:
T13253
T13386
T18698a
T18698b
T19695
T8095
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9edcb1fb by Jaro Reinders at 2023-07-05T11:43:24-04:00
Refactor Unique to be represented by Word64
In #22010 we established that Int was not always sufficient to store all
the uniques we generate during compilation on 32-bit platforms. This
commit addresses that problem by using Word64 instead of Int for
uniques.
The core of the change is in GHC.Core.Types.Unique and
GHC.Core.Types.Unique.Supply. However, the representation of uniques is
used in many other places, so those needed changes too. Additionally, the RTS
has been extended with an atomic_inc64 operation.
One major change from this commit is the introduction of the Word64Set and
Word64Map data types. These are adapted versions of IntSet and IntMap
from the containers package. These are planned to be upstreamed in the
future.
As a natural consequence of these changes, the compiler will be a bit
slower and take more space on 32-bit platforms. Our CI tests indicate
around a 5% residency increase.
Metric Increase:
CoOpt_Read
CoOpt_Singletons
LargeRecord
ManyAlternatives
ManyConstructors
MultiComponentModules
MultiComponentModulesRecomp
MultiLayerModulesTH_OneShot
RecordUpdPerf
T10421
T10547
T12150
T12227
T12234
T12425
T12707
T13035
T13056
T13253
T13253-spj
T13379
T13386
T13719
T14683
T14697
T14766
T15164
T15703
T16577
T16875
T17516
T18140
T18223
T18282
T18304
T18698a
T18698b
T18923
T1969
T19695
T20049
T21839c
T3064
T3294
T4801
T5030
T5321FD
T5321Fun
T5631
T5642
T5837
T6048
T783
T8095
T9020
T9198
T9233
T9630
T9675
T9872a
T9872b
T9872b_defer
T9872c
T9872d
T9961
TcPlugin_RewritePerf
UniqLoop
WWRec
hard_hole_fits
- - - - -
6b9db7d4 by Brandon Chinn at 2023-07-05T11:44:03-04:00
Fix docs for __GLASGOW_HASKELL_FULL_VERSION__ macro
- - - - -
40f4ef7c by Torsten Schmits at 2023-07-05T18:06:19-04:00
Substitute free variables captured by breakpoints in SpecConstr
Fixes #23267
- - - - -
2b55cb5f by sheaf at 2023-07-05T18:07:07-04:00
Reinstate untouchable variable error messages
This extra bit of information was accidentally being discarded after
a refactoring of the way we reported problems when unifying a type
variable with another type. This patch rectifies that.
- - - - -
53ed21c5 by Rodrigo Mesquita at 2023-07-05T18:07:47-04:00
configure: Drop Clang command from settings
Due to 01542cb7227614a93508b97ecad5b16dddeb6486 we no longer use the
`runClang` function, and no longer need to configure into settings the
Clang command. We used to determine options at runtime to pass clang when
it was used as an assembler, but now that we configure at configure time
we no longer need to.
- - - - -
6fdcf969 by Torsten Schmits at 2023-07-06T12:12:09-04:00
Filter out nontrivial substituted expressions in substTickish
Fixes #23272
- - - - -
41968fd6 by Sylvain Henry at 2023-07-06T12:13:02-04:00
JS: testsuite: use req_c predicate instead of js_broken
- - - - -
74a4dd2e by Sylvain Henry at 2023-07-06T12:13:02-04:00
JS: implement some file primitives (lstat,rmdir) (#22374)
- Implement lstat and rmdir.
- Implement base_c_s_is* functions (testing a file type)
- Enable passing tests
- - - - -
7e759914 by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: cleanup utils (#23314)
- Removed unused code
- Don't export unused functions
- Move toTypeList to Closure module
- - - - -
f617655c by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: rename VarType/Vt into JSRep
- - - - -
19216ca5 by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: remove custom PrimRep conversion (#23314)
We use the usual conversion to PrimRep and then we convert these
PrimReps to JSReps.
- - - - -
d3de8668 by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: don't use isRuntimeRepKindedTy in JS FFI
- - - - -
8d1b75cb by Matthew Pickering at 2023-07-07T02:40:15-04:00
ghcup-metadata: Also updates ghcup-nightlies-0.0.7.yaml file
Fixes #23600
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e524fa7f by Matthew Pickering at 2023-07-07T02:40:15-04:00
ghcup-metadata: Use dynamically linked alpine bindists
In theory these will work much better on alpine to allow people to build
statically linked applications there. We don't need to distribute a
statically linked application ourselves in order to allow that.
Fixes #23602
- - - - -
b9e7beb9 by Ben Gamari at 2023-07-07T11:32:22-04:00
Drop circle-ci-job.sh
- - - - -
9955eead by Ben Gamari at 2023-07-07T11:32:22-04:00
testsuite: Allow preservation of unexpected output
Here we introduce a new flag to the testsuite driver,
--unexpected-output-dir=<dir>, which allows the user to ask
the driver to preserve unexpected output from tests. The intent is for
this to be used in CI to allow users to more easily fix unexpected
platform-dependent output.
- - - - -
48f80968 by Ben Gamari at 2023-07-07T11:32:22-04:00
gitlab-ci: Preserve unexpected output
Here we enable use of the testsuite driver's `--unexpected-output-dir`
flag by CI, preserving the result as an artifact for use by users.
- - - - -
76983a0d by Matthew Pickering at 2023-07-07T11:32:58-04:00
driver: Fix -S with .cmm files
There was an oversight in the driver which assumed that you would always
produce a `.o` file when compiling a .cmm file.
Fixes #23610
- - - - -
6df15e93 by Mike Pilgrem at 2023-07-07T11:33:40-04:00
Update Hadrian's stack.yaml
- - - - -
1dff43cf by Ben Gamari at 2023-07-08T05:05:37-04:00
compiler: Rework ShowSome
Previously the field used to filter the sub-declarations to show
was rather ad-hoc and was only able to show at most one sub-declaration.
- - - - -
8165404b by Ben Gamari at 2023-07-08T05:05:37-04:00
testsuite: Add test to catch changes in core libraries
This adds testing infrastructure to ensure that changes in core
libraries (e.g. `base` and `ghc-prim`) are caught in CI.
- - - - -
ec1c32e2 by Melanie Phoenix at 2023-07-08T05:06:14-04:00
Deprecate Data.List.NonEmpty.unzip
- - - - -
5d2442b8 by Ben Gamari at 2023-07-08T05:06:51-04:00
Drop latent mentions of -split-objs
Closes #21134.
- - - - -
a9bc20cb by Oleg Grenrus at 2023-07-08T05:07:31-04:00
Add warn_and_run test kind
This is a compile_and_run variant which also captures the GHC's
stderr. The warn_and_run name is best I can come up with,
as compile_and_run is taken.
This is useful specifically for testing warnings. We want to test that
when warning triggers, and it's not a false positive, i.e. that the
runtime behaviour is indeed "incorrect".
As an example a single test is altered to use warn_and_run
- - - - -
c7026962 by Ben Gamari at 2023-07-08T05:08:11-04:00
configure: Don't use ld.gold on i386
ld.gold appears to produce invalid static constructor tables on i386.
While ideally we would add an autoconf check to check for this
brokenness, sadly such a check isn't easy to compose. Instead to
summarily reject such linkers on i386.
Somewhat hackily closes #23579.
- - - - -
054261dd by Andrew Lelechenko at 2023-07-08T19:32:47-04:00
Add since annotations for Data.Foldable1
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550af505 by Sylvain Henry at 2023-07-08T19:33:28-04:00
JS: support -this-unit-id for programs in the linker (#23613)
- - - - -
d284470a by Andrew Lelechenko at 2023-07-08T19:34:08-04:00
Bump text submodule
- - - - -
8e11630e by jade at 2023-07-10T16:58:40-04:00
Add a hint to enable ExplicitNamespaces for type operator imports (Fixes/Enhances #20007)
As suggested in #20007 and implemented in !8895, trying to import type operators
will suggest a fix to use the 'type' keyword, without considering whether
ExplicitNamespaces is enabled. This patch will query whether ExplicitNamespaces
is enabled and add a hint to suggest enabling ExplicitNamespaces if it isn't enabled,
alongside the suggestion of adding the 'type' keyword.
- - - - -
61b1932e by sheaf at 2023-07-10T16:59:26-04:00
tyThingLocalGREs: include all DataCons for RecFlds
The GREInfo for a record field should include the collection of all
the data constructors of the parent TyCon that have this record field.
This information was being incorrectly computed in the tyThingLocalGREs
function for a DataCon, as we were not taking into account other
DataCons with the same parent TyCon.
Fixes #23546
- - - - -
e6627cbd by Alan Zimmerman at 2023-07-10T17:00:05-04:00
EPA: Simplify GHC/Parser.y comb3
A follow up to !10743
- - - - -
ee20da34 by Andrew Lelechenko at 2023-07-10T17:01:01-04:00
Document that compareByteArrays# is available since ghc-prim-0.5.2.0
- - - - -
4926af7b by Matthew Pickering at 2023-07-10T17:01:38-04:00
Revert "Bump text submodule"
This reverts commit d284470a77042e6bc17bdb0ab0d740011196958a.
This commit requires that we bootstrap with ghc-9.4, which we do not
require until #23195 has been completed.
Subsequently this has broken nighty jobs such as the rocky8 job which in
turn has broken nightly releases.
- - - - -
d1c92bf3 by Ben Gamari at 2023-07-11T08:07:02-04:00
compiler: Fingerprint more code generation flags
Previously our recompilation check was quite inconsistent in its
coverage of non-optimisation code generation flags. Specifically, we
failed to account for most flags that would affect the behavior of
generated code in ways that might affect the result of a program's
execution (e.g. `-feager-blackholing`, `-fstrict-dicts`)
Closes #23369.
- - - - -
eb623149 by Ben Gamari at 2023-07-11T08:07:02-04:00
compiler: Record original thunk info tables on stack
Here we introduce a new code generation option, `-forig-thunk-info`,
which ensures that an `stg_orig_thunk_info` frame is pushed before every
update frame. This can be invaluable when debugging thunk cycles and
similar.
See Note [Original thunk info table frames] for details.
Closes #23255.
- - - - -
4731f44e by Jaro Reinders at 2023-07-11T08:07:40-04:00
Fix wrong MIN_VERSION_GLASGOW_HASKELL macros
I forgot to change these after rebasing.
- - - - -
dd38aca9 by Andreas Schwab at 2023-07-11T13:55:56+00:00
Hadrian: enable GHCi support on riscv64
- - - - -
09a5c6cc by Josh Meredith at 2023-07-12T11:25:13-04:00
JavaScript: support unicode code points > 2^16 in toJSString using String.fromCodePoint (#23628)
- - - - -
29fbbd4e by Matthew Pickering at 2023-07-12T11:25:49-04:00
Remove references to make build system in mk/build.mk
Fixes #23636
- - - - -
630e3026 by sheaf at 2023-07-12T11:26:43-04:00
Valid hole fits: don't panic on a Given
The function GHC.Tc.Errors.validHoleFits would end up panicking when
encountering a Given constraint. To fix this, it suffices to filter out
the Givens before continuing.
Fixes #22684
- - - - -
c39f279b by Matthew Pickering at 2023-07-12T23:18:38-04:00
Use deb10 for i386 bindists
deb9 is now EOL so it's time to upgrade the i386 bindist to use deb10
Fixes #23585
- - - - -
bf9b9de0 by Krzysztof Gogolewski at 2023-07-12T23:19:15-04:00
Fix #23567, a specializer bug
Found by Simon in https://gitlab.haskell.org/ghc/ghc/-/issues/23567#note_507834
The testcase isn't ideal because it doesn't detect the bug in master,
unless doNotUnbox is removed as in
https://gitlab.haskell.org/ghc/ghc/-/issues/23567#note_507692.
But I have confirmed that with that modification, it fails before
and passes afterwards.
- - - - -
84c1a4a2 by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00
Comments
- - - - -
b2846cb5 by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00
updates to comments
- - - - -
2af23f0e by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00
changes
- - - - -
6143838a by sheaf at 2023-07-13T08:02:17-04:00
Fix deprecation of record fields
Commit 3f374399 inadvertently broke the deprecation/warning mechanism
for record fields due to its introduction of record field namespaces.
This patch ensures that, when a top-level deprecation is applied to
an identifier, it applies to all the record fields as well.
This is achieved by refactoring GHC.Rename.Env.lookupLocalTcNames, and
GHC.Rename.Env.lookupBindGroupOcc, to not look up a fixed number of
NameSpaces but to look up all NameSpaces and filter out the irrelevant
ones.
- - - - -
6fd8f566 by sheaf at 2023-07-13T08:02:17-04:00
Introduce greInfo, greParent
These are simple helper functions that wrap the internal
field names gre_info, gre_par.
- - - - -
7f0a86ed by sheaf at 2023-07-13T08:02:17-04:00
Refactor lookupGRE_... functions
This commit consolidates all the logic for looking up something in
the Global Reader Environment into the single function lookupGRE.
This allows us to declaratively specify all the different modes of
looking up in the GlobalRdrEnv, and avoids manually passing around
filtering functions as was the case in e.g. the function
GHC.Rename.Env.lookupSubBndrOcc_helper.
-------------------------
Metric Decrease:
T8095
-------------------------
-------------------------
Metric Increase:
T8095
-------------------------
- - - - -
5e951395 by Rodrigo Mesquita at 2023-07-13T08:02:54-04:00
configure: Drop DllWrap command
We used to configure into settings a DllWrap command for windows
builds and distributions, however, we no longer do, and dllwrap is
effectively unused.
This simplification is motivated in part by the larger
toolchain-selection project (#19877, !9263)
- - - - -
e10556b6 by Teo Camarasu at 2023-07-14T16:28:46-04:00
base: fix haddock syntax in GHC.Profiling
- - - - -
0f3fda81 by Matthew Pickering at 2023-07-14T16:29:23-04:00
Revert "CI: add JS release and debug builds, regen CI jobs"
This reverts commit 59c5fe1d4b624423b1c37891710f2757bb58d6af.
This commit added two duplicate jobs on all validate pipelines, so we
are reverting for now whilst we work out what the best way forward is.
Ticket #23618
- - - - -
54bca324 by Alan Zimmerman at 2023-07-15T03:23:26-04:00
EPA: Simplify GHC/Parser.y sLL
Follow up to !10743
- - - - -
c8863828 by sheaf at 2023-07-15T03:24:06-04:00
Configure: canonicalise PythonCmd on Windows
This change makes PythonCmd resolve to a canonical absolute path on
Windows, which prevents HLS getting confused (now that we have a
build-time dependency on python).
fixes #23652
- - - - -
ca1e636a by Rodrigo Mesquita at 2023-07-15T03:24:42-04:00
Improve Note [Binder-swap during float-out]
- - - - -
cf86f3ec by Matthew Craven at 2023-07-16T01:42:09+02:00
Equality of forall-types is visibility aware
This patch finally (I hope) nails the question of whether
(forall a. ty) and (forall a -> ty)
are `eqType`: they aren't!
There is a long discussion in #22762, plus useful Notes:
* Note [ForAllTy and type equality] in GHC.Core.TyCo.Compare
* Note [Comparing visiblities] in GHC.Core.TyCo.Compare
* Note [ForAllCo] in GHC.Core.TyCo.Rep
It also establishes a helpful new invariant for ForAllCo,
and ForAllTy, when the bound variable is a CoVar:in that
case the visibility must be coreTyLamForAllTyFlag.
All this is well documented in revised Notes.
- - - - -
7f13acbf by Vladislav Zavialov at 2023-07-16T01:56:27-04:00
List and Tuple<n>: update documentation
Add the missing changelog.md entries and @since-annotations.
- - - - -
2afbddb0 by Andrei Borzenkov at 2023-07-16T10:21:24+04:00
Type patterns (#22478, #18986)
Improved name resolution and type checking of type patterns in constructors:
1. HsTyPat: a new dedicated data type that represents type patterns in
HsConPatDetails instead of reusing HsPatSigType
2. rnHsTyPat: a new function that renames a type
pattern and collects its binders into three groups:
- explicitly bound type variables, excluding locally bound
variables
- implicitly bound type variables from kind signatures
(only if ScopedTypeVariables are enabled)
- named wildcards (only from kind signatures)
2a. rnHsPatSigTypeBindingVars: removed in favour of rnHsTyPat
2b. rnImplcitTvBndrs: removed because no longer needed
3. collect_pat: updated to collect type variable binders from type patterns
(this means that types and terms use the same infrastructure to detect
conflicting bindings, unused variables and name shadowing)
3a. CollVarTyVarBinders: a new CollectFlag constructor that enables
collection of type variables
4. tcHsTyPat: a new function that typechecks type patterns, capable of
handling polymorphic kinds.
See Note [Type patterns: binders and unifiers]
Examples of code that is now accepted:
f = \(P @a) -> \(P @a) -> ... -- triggers -Wname-shadowing
g :: forall a. Proxy a -> ...
g (P @a) = ... -- also triggers -Wname-shadowing
h (P @($(TH.varT (TH.mkName "t")))) = ...
-- t is bound at splice time
j (P @(a :: (x,x))) = ... -- (x,x) is no longer rejected
data T where
MkT :: forall (f :: forall k. k -> Type).
f Int -> f Maybe -> T
k :: T -> ()
k (MkT @f (x :: f Int) (y :: f Maybe)) = ()
-- f :: forall k. k -> Type
Examples of code that is rejected with better error messages:
f (Left @a @a _) = ...
-- new message:
-- • Conflicting definitions for ‘a’
-- Bound at: Test.hs:1:11
-- Test.hs:1:14
Examples of code that is now rejected:
{-# OPTIONS_GHC -Werror=unused-matches #-}
f (P @a) = ()
-- Defined but not used: type variable ‘a’
- - - - -
eb1a6ab1 by sheaf at 2023-07-16T09:20:45-04:00
Don't use substTyUnchecked in newMetaTyVar
There were some comments that explained that we needed to use an
unchecked substitution function because of issue #12931, but that
has since been fixed, so we should be able to use substTy instead now.
- - - - -
c7bbad9a by sheaf at 2023-07-17T02:48:19-04:00
rnImports: var shouldn't import NoFldSelectors
In an import declaration such as
import M ( var )
the import of the variable "var" should **not** bring into scope record
fields named "var" which are defined with NoFieldSelectors.
Doing so can cause spurious "unused import" warnings, as reported in
ticket #23557.
Fixes #23557
- - - - -
1af2e773 by sheaf at 2023-07-17T02:48:19-04:00
Suggest similar names in imports
This commit adds similar name suggestions when importing. For example
module A where { spelling = 'o' }
module B where { import B ( speling ) }
will give rise to the error message:
Module ‘A’ does not export ‘speling’.
Suggested fix: Perhaps use ‘spelling’
This also provides hints when users try to import record fields defined
with NoFieldSelectors.
- - - - -
654fdb98 by Alan Zimmerman at 2023-07-17T02:48:55-04:00
EPA: Store leading AnnSemi for decllist in al_rest
This simplifies the markAnnListA implementation in ExactPrint
- - - - -
22565506 by sheaf at 2023-07-17T21:12:59-04:00
base: add COMPLETE pragma to BufferCodec PatSyn
This implements CLC proposal #178, rectifying an oversight in the
implementation of CLC proposal #134 which could lead to spurious
pattern match warnings.
https://github.com/haskell/core-libraries-committee/issues/178
https://github.com/haskell/core-libraries-committee/issues/134
- - - - -
860f6269 by sheaf at 2023-07-17T21:13:00-04:00
exactprint: silence incomplete record update warnings
- - - - -
df706de3 by sheaf at 2023-07-17T21:13:00-04:00
Re-instate -Wincomplete-record-updates
Commit e74fc066 refactored the handling of record updates to use
the HsExpanded mechanism. This meant that the pattern matching inherent
to a record update was considered to be "generated code", and thus we
stopped emitting "incomplete record update" warnings entirely.
This commit changes the "data Origin = Source | Generated" datatype,
adding a field to the Generated constructor to indicate whether we
still want to perform pattern-match checking. We also have to do a bit
of plumbing with HsCase, to record that the HsCase arose from an
HsExpansion of a RecUpd, so that the error message continues to mention
record updates as opposed to a generic "incomplete pattern matches in case"
error.
Finally, this patch also changes the way we handle inaccessible code
warnings. Commit e74fc066 was also a regression in this regard, as we
were emitting "inaccessible code" warnings for case statements spuriously
generated when desugaring a record update (remember: the desugaring mechanism
happens before typechecking; it thus can't take into account e.g. GADT information
in order to decide which constructors to include in the RHS of the desugaring
of the record update).
We fix this by changing the mechanism through which we disable inaccessible
code warnings: we now check whether we are in generated code in
GHC.Tc.Utils.TcMType.newImplication in order to determine whether to
emit inaccessible code warnings.
Fixes #23520
Updates haddock submodule, to avoid incomplete record update warnings
- - - - -
1d05971e by sheaf at 2023-07-17T21:13:00-04:00
Propagate long-distance information in do-notation
The preceding commit re-enabled pattern-match checking inside record
updates. This revealed that #21360 was in fact NOT fixed by e74fc066.
This commit makes sure we correctly propagate long-distance information
in do blocks, e.g. in
```haskell
data T = A { fld :: Int } | B
f :: T -> Maybe T
f r = do
a@A{} <- Just r
Just $ case a of { A _ -> A 9 }
```
we need to propagate the fact that "a" is headed by the constructor "A"
to see that the case expression "case a of { A _ -> A 9 }" cannot fail.
Fixes #21360
- - - - -
bea0e323 by sheaf at 2023-07-17T21:13:00-04:00
Skip PMC for boring patterns
Some patterns introduce no new information to the pattern-match
checker (such as plain variable or wildcard patterns). We can thus
skip doing any pattern-match checking on them when the sole purpose
for doing so was introducing new long-distance information.
See Note [Boring patterns] in GHC.Hs.Pat.
Doing this avoids regressing in performance now that we do additional
pattern-match checking inside do notation.
- - - - -
ddcdd88c by Rodrigo Mesquita at 2023-07-17T21:13:36-04:00
Split GHC.Platform.ArchOS from ghc-boot into ghc-platform
Split off the `GHC.Platform.ArchOS` module from the `ghc-boot` package
into this reinstallable standalone package which abides by the PVP, in
part motivated by the ongoing work on `ghc-toolchain` towards runtime
retargetability.
- - - - -
b55a8ea7 by Sylvain Henry at 2023-07-17T21:14:27-04:00
JS: better implementation for plusWord64 (#23597)
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889c2bbb by sheaf at 2023-07-18T06:37:32-04:00
Do primop rep-poly checks when instantiating
This patch changes how we perform representation-polymorphism checking
for primops (and other wired-in Ids such as coerce).
When instantiating the primop, we check whether each type variable
is required to instantiated to a concrete type, and if so we create a
new concrete metavariable (a ConcreteTv) instead of a simple MetaTv.
(A little subtlety is the need to apply the substitution obtained from
instantiating to the ConcreteTvOrigins, see
Note [substConcreteTvOrigin] in GHC.Tc.Utils.TcMType.)
This allows us to prevent representation-polymorphism in non-argument
position, as that is required for some of these primops.
We can also remove the logic in tcRemainingValArgs, except for
the part concerning representation-polymorphic unlifted newtypes.
The function has been renamed rejectRepPolyNewtypes; all it does now
is reject unsaturated occurrences of representation-polymorphic newtype
constructors when the representation of its argument isn't a concrete
RuntimeRep (i.e. still a PHASE 1 FixedRuntimeRep check).
The Note [Eta-expanding rep-poly unlifted newtypes] in GHC.Tc.Gen.Head
gives more explanation about a possible path to PHASE 2, which would be
in line with the treatment for primops taken in this patch.
We also update the Core Lint check to handle this new framework. This
means Core Lint now checks representation-polymorphism in continuation
position like needed for catch#.
Fixes #21906
-------------------------
Metric Increase:
LargeRecord
-------------------------
- - - - -
00648e5d by Krzysztof Gogolewski at 2023-07-18T06:38:10-04:00
Core Lint: distinguish let and letrec in locations
Lint messages were saying "in the body of letrec" even for non-recursive
let.
I've also renamed BodyOfLetRec to BodyOfLet in stg, since there's no
separate letrec.
- - - - -
787bae96 by Krzysztof Gogolewski at 2023-07-18T06:38:50-04:00
Use extended literals when deriving Show
This implements GHC proposal
https://github.com/ghc-proposals/ghc-proposals/pull/596
Also add support for Int64# and Word64#; see testcase ShowPrim.
- - - - -
257f1567 by Jaro Reinders at 2023-07-18T06:39:29-04:00
Add StgFromCore and StgCodeGen linting
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34d08a20 by Ben Gamari at 2023-07-19T03:33:22-04:00
Reg.Liveness: Strictness
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c5deaa27 by Ben Gamari at 2023-07-19T03:33:22-04:00
Reg.Liveness: Don't repeatedly construct UniqSets
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b947250b by Ben Gamari at 2023-07-19T03:33:22-04:00
compiler/Types: Ensure that fromList-type operations can fuse
In #20740 I noticed that mkUniqSet does not fuse. In practice, allowing
it to do so makes a considerable difference in allocations due to the
backend.
Metric Decrease:
T12707
T13379
T3294
T4801
T5321FD
T5321Fun
T783
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6c88c2ba by Sven Tennie at 2023-07-19T03:33:59-04:00
x86 Codegen: Implement MO_S_MulMayOflo for W16
- - - - -
5f1154e0 by Sven Tennie at 2023-07-19T03:33:59-04:00
x86 CodeGen: MO_S_MulMayOflo better error message for rep > W64
It's useful to see which value made the pattern match fail. (If it ever
occurs.)
- - - - -
e8c9a95f by Sven Tennie at 2023-07-19T03:33:59-04:00
x86 CodeGen: Implement MO_S_MulMayOflo for W8
This case wasn't handled before. But, the test-primops test suite showed
that it actually might appear.
- - - - -
a36f9dc9 by Sven Tennie at 2023-07-19T03:33:59-04:00
Add test for %mulmayoflo primop
The test expects a perfect implementation with no false positives.
- - - - -
38a36248 by Matthew Pickering at 2023-07-19T03:34:36-04:00
lint-ci-config: Generate jobs-metadata.json
We also now save the jobs-metadata.json and jobs.yaml file as artifacts
as:
* It might be useful for someone who is modifying CI to copy jobs.yaml
if they are having trouble regenerating locally.
* jobs-metadata.json is very useful for downstream pipelines to work out
the right job to download.
Fixes #23654
- - - - -
1535a671 by Vladislav Zavialov at 2023-07-19T03:35:12-04:00
Initialize 9.10.1-notes.rst
Create new release notes for the next GHC release (GHC 9.10)
- - - - -
3bd4d5b5 by sheaf at 2023-07-19T03:35:53-04:00
Prioritise Parent when looking up class sub-binder
When we look up children GlobalRdrElts of a given Parent, we sometimes
would rather prioritise those GlobalRdrElts which have the right Parent,
and sometimes prioritise those that have the right NameSpace:
- in export lists, we should prioritise NameSpace
- for class/instance binders, we should prioritise Parent
See Note [childGREPriority] in GHC.Types.Name.Reader.
fixes #23664
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9c8fdda3 by Alan Zimmerman at 2023-07-19T03:36:29-04:00
EPA: Improve annotation management in getMonoBind
Ensure the LHsDecl for a FunBind has the correct leading comments and
trailing annotations.
See the added note for details.
- - - - -
ff884b77 by Matthew Pickering at 2023-07-19T11:42:02+01:00
Remove unused files in .gitlab
These were left over after 6078b429
- - - - -
29ef590c by Matthew Pickering at 2023-07-19T11:42:52+01:00
gen_ci: Add hie.yaml file
This allows you to load `gen_ci.hs` into HLS, and now it is a huge
module, that is quite useful.
- - - - -
808b55cf by Matthew Pickering at 2023-07-19T12:24:41+01:00
ci: Make "fast-ci" the default validate configuration
We are trying out a lighter weight validation pipeline where by default
we just test on 5 platforms:
* x86_64-deb10-slow-validate
* windows
* x86_64-fedora33-release
* aarch64-darwin
* aarch64-linux-deb10
In order to enable the "full" validation pipeline you can apply the
`full-ci` label which will enable all the validation pipelines.
All the validation jobs are still run on a marge batch.
The goal is to reduce the overall CI capacity so that pipelines start
faster for MRs and marge bot batches are faster.
Fixes #23694
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0b23db03 by Alan Zimmerman at 2023-07-20T05:28:47-04:00
EPA: Simplify GHC/Parser.y sL1
This is the next patch in a series simplifying location management in
GHC/Parser.y
This one simplifies sL1, to use the HasLoc instances introduced in
!10743 (closed)
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3ece9856 by Ben Gamari at 2023-07-21T07:30:45-04:00
nativeGen: Explicitly set flags of text sections on Windows
The binutils documentation (for COFF) claims,
> If no flags are specified, the default flags depend upon the section
> name. If the section name is not recognized, the default will be for the
> section to be loaded and writable.
We previously assumed that this would do the right thing for split
sections (e.g. a section named `.text$foo` would be correctly inferred
to be a text section). However, we have observed that this is not the
case (at least under the clang toolchain used on Windows): when
split-sections is enabled, text sections are treated by the assembler as
data (matching the "default" behavior specified by the documentation).
Avoid this by setting section flags explicitly. This should fix split
sections on Windows.
Fixes #22834.
- - - - -
db7f7240 by Ben Gamari at 2023-07-21T07:30:45-04:00
nativeGen: Set explicit section types on all platforms
- - - - -
b444c16f by Finley McIlwaine at 2023-07-21T07:31:28-04:00
Insert documentation into parsed signature modules
Causes haddock comments in signature modules to be properly
inserted into the AST (just as they are for regular modules)
if the `-haddock` flag is given.
Also adds a test that compares `-ddump-parsed-ast` output
for a signature module to prevent further regressions.
Fixes #23315
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c30cea53 by Ben Gamari at 2023-07-21T23:23:49-04:00
primops: Introduce unsafeThawByteArray#
This addresses an odd asymmetry in the ByteArray# primops, which
previously provided unsafeFreezeByteArray# but no corresponding
thaw operation.
Closes #22710
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87f9bd47 by Ben Gamari at 2023-07-21T23:23:49-04:00
testsuite: Elaborate in interface stability README
This discussion didn't make it into the original MR.
- - - - -
e4350b41 by Matthew Pickering at 2023-07-21T23:24:25-04:00
Allow users to override non-essential haddock options in a Flavour
We now supply the non-essential options to haddock using the `extraArgs`
field, which can be specified in a Flavour so that if an advanced user
wants to change how documentation is generated then they can use
something other than the `defaultHaddockExtraArgs`.
This does have the potential to regress some packaging if a user has
overridden `extraArgs` themselves, because now they also need to add
the haddock options to extraArgs. This can easily be done by appending
`defaultHaddockExtraArgs` to their extraArgs invocation but someone
might not notice this behaviour has changed.
In any case, I think passing the non-essential options in this manner is
the right thing to do and matches what we do for the "ghc" builder,
which by default doesn't pass any optmisation levels, and would likewise
be very bad if someone didn't pass suitable `-O` levels for builds.
Fixes #23625
- - - - -
fc186b0c by Ilias Tsitsimpis at 2023-07-21T23:25:03-04:00
ghc-prim: Link against libatomic
Commit b4d39adbb58 made 'hs_cmpxchg64()' available to all architectures.
Unfortunately this made GHC to fail to build on armel, since armel needs
libatomic to support atomic operations on 64-bit word sizes.
Configure libraries/ghc-prim/ghc-prim.cabal to link against libatomic,
the same way as we do in rts/rts.cabal.
- - - - -
4f5538a8 by Matthew Pickering at 2023-07-21T23:25:39-04:00
simplifier: Correct InScopeSet in rule matching
The in-scope set passedto the `exprIsLambda_maybe` call lacked all the
in-scope binders. @simonpj suggests this fix where we augment the
in-scope set with the free variables of expression which fixes this
failure mode in quite a direct way.
Fixes #23630
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5ad8d597 by Krzysztof Gogolewski at 2023-07-21T23:26:17-04:00
Add a test for #23413
It was fixed by commit e1590ddc661d6: Add the SolverStage monad.
- - - - -
7e05f6df by sheaf at 2023-07-21T23:26:56-04:00
Finish migration of diagnostics in GHC.Tc.Validity
This patch finishes migrating the error messages in GHC.Tc.Validity
to use the new diagnostic infrastructure.
It also refactors the error message datatypes for class and family
instances, to common them up under a single datatype as much as possible.
- - - - -
4876fddc by Matthew Pickering at 2023-07-21T23:27:33-04:00
ci: Enable some more jobs to run in a marge batch
In !10907 I made the majority of jobs not run on a validate pipeline but
then forgot to renable a select few jobs on the marge batch MR.
- - - - -
026991d7 by Jens Petersen at 2023-07-21T23:28:13-04:00
user_guide/flags.py: python-3.12 no longer includes distutils
packaging.version seems able to handle this fine
- - - - -
b91bbc2b by Matthew Pickering at 2023-07-21T23:28:50-04:00
ci: Mention ~full-ci label in MR template
We mention that if you need a full validation pipeline then you can
apply the ~full-ci label to your MR in order to test against the full
validation pipeline (like we do for marge).
- - - - -
42b05e9b by sheaf at 2023-07-22T12:36:00-04:00
RTS: declare setKeepCAFs symbol
Commit 08ba8720 failed to declare the dependency of keepCAFsForGHCi on
the symbol setKeepCAFs in the RTS, which led to undefined symbol errors
on Windows, as exhibited by the testcase frontend001.
Thanks to Moritz Angermann and Ryan Scott for the diagnosis and fix.
Fixes #22961
- - - - -
a72015d6 by sheaf at 2023-07-22T12:36:01-04:00
Mark plugins-external as broken on Windows
This test is broken on Windows, so we explicitly mark it as such now
that we stop skipping plugin tests on Windows.
- - - - -
cb9c93d7 by sheaf at 2023-07-22T12:36:01-04:00
Stop marking plugin tests as fragile on Windows
Now that b2bb3e62 has landed we are in a better situation with
regards to plugins on Windows, allowing us to unmark many plugin tests
as fragile.
Fixes #16405
- - - - -
a7349217 by Krzysztof Gogolewski at 2023-07-22T12:36:37-04:00
Misc cleanup
- Remove unused RDR names
- Fix typos in comments
- Deriving: simplify boxConTbl and remove unused litConTbl
- chmod -x GHC/Exts.hs, this seems accidental
- - - - -
33b6850a by Vladislav Zavialov at 2023-07-23T10:27:37-04:00
Visible forall in types of terms: Part 1 (#22326)
This patch implements part 1 of GHC Proposal #281,
introducing explicit `type` patterns and `type` arguments.
Summary of the changes:
1. New extension flag:
RequiredTypeArguments
2. New user-facing syntax:
`type p` patterns (represented by EmbTyPat)
`type e` expressions (represented by HsEmbTy)
3. Functions with required type arguments (visible forall)
can now be defined and applied:
idv :: forall a -> a -> a -- signature (relevant change: checkVdqOK in GHC/Tc/Validity.hs)
idv (type a) (x :: a) = x -- definition (relevant change: tcPats in GHC/Tc/Gen/Pat.hs)
x = idv (type Int) 42 -- usage (relevant change: tcInstFun in GHC/Tc/Gen/App.hs)
4. template-haskell support:
TH.TypeE corresponds to HsEmbTy
TH.TypeP corresponds to EmbTyPat
5. Test cases and a new User's Guide section
Changes *not* included here are the t2t (term-to-type) transformation
and term variable capture; those belong to part 2.
- - - - -
73b5c7ce by sheaf at 2023-07-23T10:28:18-04:00
Add test for #22424
This is a simple Template Haskell test in which we refer to
record selectors by their exact Names, in two different ways.
Fixes #22424
- - - - -
83cbc672 by Ben Gamari at 2023-07-24T07:40:49+00:00
ghc-toolchain: Initial commit
- - - - -
31dcd26c by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00
ghc-toolchain: Toolchain Selection
This commit integrates ghc-toolchain, the brand new way of configuring
toolchains for GHC, with the Hadrian build system, with configure, and
extends and improves the first iteration of ghc-toolchain.
The general overview is
* We introduce a program invoked `ghc-toolchain --triple=...` which, when run,
produces a file with a `Target`. A `GHC.Toolchain.Target.Target`
describes the properties of a target and the toolchain (executables
and configured flags) to produce code for that target
* Hadrian was modified to read Target files, and will both
* Invoke the toolchain configured in the Target file as needed
* Produce a `settings` file for GHC based on the Target file for that stage
* `./configure` will invoke ghc-toolchain to generate target files, but
it will also generate target files based on the flags configure itself
configured (through `.in` files that are substituted)
* By default, the Targets generated by configure are still (for now) the ones used by Hadrian
* But we additionally validate the Target files generated by
ghc-toolchain against the ones generated by configure, to get a head
start on catching configuration bugs before we transition
completely.
* When we make that transition, we will want to drop a lot of the
toolchain configuration logic from configure, but keep it otherwise.
* For each compiler stage we should have 1 target file (up to a stage compiler we can't run in our machine)
* We just have a HOST target file, which we use as the target for stage0
* And a TARGET target file, which we use for stage1 (and later stages, if not cross compiling)
* Note there is no BUILD target file, because we only support cross compilation where BUILD=HOST
* (for more details on cross-compilation see discussion on !9263)
See also
* Note [How we configure the bundled windows toolchain]
* Note [ghc-toolchain consistency checking]
* Note [ghc-toolchain overview]
Ticket: #19877
MR: !9263
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a732b6d3 by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00
Add flag to enable/disable ghc-toolchain based configurations
This flag is disabled by default, and we'll use the
configure-generated-toolchains by default until we remove the toolchain
configuration logic from configure.
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61eea240 by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00
Split ghc-toolchain executable to new packge
In light of #23690, we split the ghc-toolchain executable out of the
library package to be able to ship it in the bindist using Hadrian.
Ideally, we eventually revert this commit.
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38e795ff by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00
Ship ghc-toolchain in the bindist
Add the ghc-toolchain binary to the binary distribution we ship to
users, and teach the bindist configure to use the existing ghc-toolchain.
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32cae784 by Matthew Craven at 2023-07-24T16:48:24-04:00
Kill off gen_bytearray_addr_access_ops.py
The relevant primop descriptions are now
generated directly by genprimopcode.
This makes progress toward fixing #23490, but it is not
a complete fix since there is more than one way in which
cabal-reinstall (hadrian/build build-cabal) is broken.
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02e6a6ce by Matthew Pickering at 2023-07-24T16:49:00-04:00
compiler: Remove unused `containers.h` include
Fixes #23712
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822ef66b by Matthew Pickering at 2023-07-25T08:44:50-04:00
Fix pretty printing of WARNING pragmas
There is still something quite unsavoury going on with WARNING pragma
printing because the printing relies on the fact that for decl
deprecations the SourceText of WarningTxt is empty. However, I let that
lion sleep and just fixed things directly.
Fixes #23465
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e7b38ede by Matthew Pickering at 2023-07-25T08:45:28-04:00
ci-images: Bump to commit which has 9.6 image
The test-bootstrap job has been failing for 9.6 because we accidentally
used a non-master commit.
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bb408936 by Matthew Pickering at 2023-07-25T08:45:28-04:00
Update bootstrap plans for 9.6.2 and 9.4.5
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355e1792 by Alan Zimmerman at 2023-07-26T10:17:32-04:00
EPA: Simplify GHC/Parser.y comb4/comb5
Use the HasLoc instance from Ast.hs to allow comb4/comb5 to work with
anything with a SrcSpan
Also get rid of some more now unnecessary reLoc calls.
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9393df83 by Gavin Zhao at 2023-07-26T10:18:16-04:00
compiler: make -ddump-asm work with wasm backend NCG
Fixes #23503.
Now the `-ddump-asm` flag is respected in the wasm backend
NCG, so developers can directly view the generated ASM instead of
needing to pass `-S` or `-keep-tmp-files` and manually find & open
the assembly file.
Ideally, we should be able to output the assembly files in smaller
chunks like in other NCG backends. This would also make dumping assembly
stats easier. However, this would require a large refactoring, so for
short-term debugging purposes I think the current approach works fine.
Signed-off-by: Gavin Zhao <git(a)gzgz.dev>
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79463036 by Krzysztof Gogolewski at 2023-07-26T10:18:54-04:00
llvm: Restore accidentally deleted code in 0fc5cb97
Fixes #23711
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20db7e26 by Rodrigo Mesquita at 2023-07-26T10:19:33-04:00
configure: Default missing options to False when preparing ghc-toolchain Targets
This commit fixes building ghc with 9.2 as the boostrap compiler.
The ghc-toolchain patch assumed all _STAGE0 options were available, and
forgot to account for this missing information in 9.2.
Ghc 9.2 does not have in settings whether ar supports -l, hence can't
report it with --info (unliked 9.4 upwards).
The fix is to default the missing information (we default "ar supports
-l" and other missing options to False)
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fac9e84e by Naïm Favier at 2023-07-26T10:20:16-04:00
docs: Fix typo
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503fd647 by Bartłomiej Cieślar at 2023-07-26T17:23:10-04:00
This MR is an implementation of the proposal #516.
It adds a warning -Wincomplete-record-selectors for usages of a record
field access function (either a record selector or getField @"rec"),
while trying to silence the warning whenever it can be sure that a constructor
without the record field would not be invoked (which would otherwise cause
the program to fail). For example:
data T = T1 | T2 {x :: Bool}
f a = x a -- this would throw an error
g T1 = True
g a = x a -- this would not throw an error
h :: HasField "x" r Bool => r -> Bool
h = getField @"x"
j :: T -> Bool
j = h -- this would throw an error because of the `HasField`
-- constraint being solved
See the tests DsIncompleteRecSel* and TcIncompleteRecSel for more examples of the warning.
See Note [Detecting incomplete record selectors] in GHC.HsToCore.Expr for implementation details
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af6fdf42 by Arnaud Spiwack at 2023-07-26T17:23:52-04:00
Fix user-facing label in MR template
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5d45b92a by Matthew Pickering at 2023-07-27T05:46:46-04:00
ci: Test bootstrapping configurations with full-ci and on marge batches
There have been two incidents recently where bootstrapping has been
broken by removing support for building with 9.2.*.
The process for bumping the minimum required version starts with bumping
the configure version and then other CI jobs such as the bootstrap jobs
have to be updated. We must not silently bump the minimum required
version.
Now we are running a slimmed down validate pipeline it seems worthwile
to test these bootstrap configurations in the full-ci pipeline.
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25d4fee7 by Matthew Pickering at 2023-07-27T05:46:46-04:00
bootstrap: Remove ghc-9_2_* plans
We are anticipating shortly making it necessary to use ghc-9.4 to boot
the compiler.
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2f66da16 by Matthew Pickering at 2023-07-27T05:46:46-04:00
Update bootstrap plans for ghc-platform and ghc-toolchain dependencies
Fixes #23735
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c8c6eab1 by Matthew Pickering at 2023-07-27T05:46:46-04:00
bootstrap: Disable -selftest flag from bootstrap plans
This saves on building one dependency (QuickCheck) which is unecessary
for bootstrapping.
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a80ca086 by Andrew Lelechenko at 2023-07-27T05:47:26-04:00
Link reference paper and package from System.Mem.{StableName,Weak}
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a5319358 by David Knothe at 2023-07-28T13:13:10-04:00
Update Match Datatype
EquationInfo currently contains a list of the equation's patterns together with a CoreExpr that is to be evaluated after a successful match on this equation.
All the match-functions only operate on the first pattern of an equation - after successfully matching it, match is called recursively on the tail of the pattern list.
We can express this more clearly and make the code a little more elegant by updating the datatype of EquationInfo as follows:
data EquationInfo
= EqnMatch { eqn_pat = Pat GhcTc, eqn_rest = EquationInfo }
| EqnDone { eqn_rhs = MatchResult CoreExpr }
An EquationInfo now explicitly exposes its first pattern which most functions operate on, and exposes the equation that remains after processing the first pattern. An EqnDone signifies an empty equation where the CoreExpr can now be evaluated.
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86ad1af9 by David Binder at 2023-07-28T13:13:53-04:00
Improve documentation for Data.Fixed
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f8fa1d08 by Ben Gamari at 2023-07-28T13:14:31-04:00
ghc-prim: Use C11 atomics
Previously `ghc-prim`'s atomic wrappers used the legacy `__sync_*`
family of C builtins. Here we refactor these to rather use the
appropriate C11 atomic equivalents, allowing us to be more explicit
about the expected ordering semantics.
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0bfc8908 by Finley McIlwaine at 2023-07-28T18:46:26-04:00
Include -haddock in DynFlags fingerprint
The -haddock flag determines whether or not the resulting .hi files
contain haddock documentation strings. If the existing .hi files do
not contain haddock documentation strings and the user requests them,
we should recompile.
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40425c50 by Andreas Klebinger at 2023-07-28T18:47:02-04:00
Aarch64 NCG: Use encoded immediates for literals.
Try to generate
instr x2, <imm>
instead of
mov x1, lit
instr x2, x1
When possible. This get's rid if quite a few redundant
mov instructions.
I believe this causes a metric decrease for LargeRecords as
we reduce register pressure.
-------------------------
Metric Decrease:
LargeRecord
-------------------------
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e9a0fa3f by Andrew Lelechenko at 2023-07-28T18:47:42-04:00
Bump filepath submodule to 1.4.100.4
Resolves #23741
Metric Decrease:
MultiComponentModules
MultiComponentModulesRecomp
MultiLayerModules
MultiLayerModulesRecomp
T10421
T12234
T12425
T13035
T13701
T13719
T16875
T18304
T18698a
T18698b
T21839c
T9198
TcPlugin_RewritePerf
hard_hole_fits
Metric decrease on Windows can be probably attributed to https://github.com/haskell/filepath/pull/183
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ee93edfd by Andrew Lelechenko at 2023-07-28T18:48:21-04:00
Add since pragmas to GHC.IO.Handle.FD
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d0369802 by Simon Peyton Jones at 2023-07-30T09:24:48+01:00
Make the occurrence analyser smarter about join points
This MR addresses #22404. There is a big Note
Note [Occurrence analysis for join points]
that explains it all. Significant changes
* New field occ_join_points in OccEnv
* The NonRec case of occAnalBind splits into two cases:
one for existing join points (which does the special magic for
Note [Occurrence analysis for join points], and one for other
bindings.
* mkOneOcc adds in info from occ_join_points.
* All "bring into scope" activity is centralised in the
new function `addInScope`.
* I made a local data type LocalOcc for use inside the occurrence analyser
It is like OccInfo, but lacks IAmDead and IAmALoopBreaker, which in turn
makes computationns over it simpler and more efficient.
* I found quite a bit of allocation in GHC.Core.Rules.getRules
so I optimised it a bit.
More minor changes
* I found I was using (Maybe Arity) a lot, so I defined a new data
type JoinPointHood and used it everwhere. This touches a lot of
non-occ-anal files, but it makes everything more perspicuous.
* Renamed data constructor WithUsageDetails to WUD, and
WithTailUsageDetails to WTUD
This also fixes #21128, on the way.
--------- Compiler perf -----------
I spent quite a time on performance tuning, so even though it
does more than before, the occurrence analyser runs slightly faster
on average. Here are the compile-time allocation changes over 0.5%
CoOpt_Read(normal) ghc/alloc 766,025,520 754,561,992 -1.5%
CoOpt_Singletons(normal) ghc/alloc 759,436,840 762,925,512 +0.5%
LargeRecord(normal) ghc/alloc 1,814,482,440 1,799,530,456 -0.8%
PmSeriesT(normal) ghc/alloc 68,159,272 67,519,720 -0.9%
T10858(normal) ghc/alloc 120,805,224 118,746,968 -1.7%
T11374(normal) ghc/alloc 164,901,104 164,070,624 -0.5%
T11545(normal) ghc/alloc 79,851,808 78,964,704 -1.1%
T12150(optasm) ghc/alloc 73,903,664 71,237,544 -3.6% GOOD
T12227(normal) ghc/alloc 333,663,200 331,625,864 -0.6%
T12234(optasm) ghc/alloc 52,583,224 52,340,344 -0.5%
T12425(optasm) ghc/alloc 81,943,216 81,566,720 -0.5%
T13056(optasm) ghc/alloc 294,517,928 289,642,512 -1.7%
T13253-spj(normal) ghc/alloc 118,271,264 59,859,040 -49.4% GOOD
T15164(normal) ghc/alloc 1,102,630,352 1,091,841,296 -1.0%
T15304(normal) ghc/alloc 1,196,084,000 1,166,733,000 -2.5%
T15630(normal) ghc/alloc 148,729,632 147,261,064 -1.0%
T15703(normal) ghc/alloc 379,366,664 377,600,008 -0.5%
T16875(normal) ghc/alloc 32,907,120 32,670,976 -0.7%
T17516(normal) ghc/alloc 1,658,001,888 1,627,863,848 -1.8%
T17836(normal) ghc/alloc 395,329,400 393,080,248 -0.6%
T18140(normal) ghc/alloc 71,968,824 73,243,040 +1.8%
T18223(normal) ghc/alloc 456,852,568 453,059,088 -0.8%
T18282(normal) ghc/alloc 129,105,576 131,397,064 +1.8%
T18304(normal) ghc/alloc 71,311,712 70,722,720 -0.8%
T18698a(normal) ghc/alloc 208,795,112 210,102,904 +0.6%
T18698b(normal) ghc/alloc 230,320,736 232,697,976 +1.0% BAD
T19695(normal) ghc/alloc 1,483,648,128 1,504,702,976 +1.4%
T20049(normal) ghc/alloc 85,612,024 85,114,376 -0.6%
T21839c(normal) ghc/alloc 415,080,992 410,906,216 -1.0% GOOD
T4801(normal) ghc/alloc 247,590,920 250,726,272 +1.3%
T6048(optasm) ghc/alloc 95,699,416 95,080,680 -0.6%
T783(normal) ghc/alloc 335,323,384 332,988,120 -0.7%
T9233(normal) ghc/alloc 709,641,224 685,947,008 -3.3% GOOD
T9630(normal) ghc/alloc 965,635,712 948,356,120 -1.8%
T9675(optasm) ghc/alloc 444,604,152 428,987,216 -3.5% GOOD
T9961(normal) ghc/alloc 303,064,592 308,798,800 +1.9% BAD
WWRec(normal) ghc/alloc 503,728,832 498,102,272 -1.1%
geo. mean -1.0%
minimum -49.4%
maximum +1.9%
In fact these figures seem to vary between platforms; generally worse
on i386 for some reason. The Windows numbers vary by 1% espec in
benchmarks where the total allocation is low. But the geom mean stays
solidly negative, which is good. The "increase/decrease" list below
covers all platforms.
The big win on T13253-spj comes because it has a big nest of join
points, each occurring twice in the next one. The new occ-anal takes
only one iteration of the simplifier to do the inlining; the old one
took four. Moreover, we get much smaller code with the new one:
New: Result size of Tidy Core
= {terms: 429, types: 84, coercions: 0, joins: 14/14}
Old: Result size of Tidy Core
= {terms: 2,437, types: 304, coercions: 0, joins: 10/10}
--------- Runtime perf -----------
No significant changes in nofib results, except a 1% reduction in
compiler allocation.
Metric Decrease:
CoOpt_Read
T13253-spj
T9233
T9630
T9675
T12150
T21839c
LargeRecord
MultiComponentModulesRecomp
T10421
T13701
T10421
T13701
T12425
Metric Increase:
T18140
T9961
T18282
T18698a
T18698b
T19695
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42aa7fbd by Julian Ospald at 2023-07-30T17:22:01-04:00
Improve documentation around IOException and ioe_filename
See:
* https://github.com/haskell/core-libraries-committee/issues/189
* https://github.com/haskell/unix/pull/279
* https://github.com/haskell/unix/pull/289
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33598ecb by Sylvain Henry at 2023-08-01T14:45:54-04:00
JS: implement getMonotonicTime (fix #23687)
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d2bedffd by Bartłomiej Cieślar at 2023-08-01T14:46:40-04:00
Implementation of the Deprecated Instances proposal #575
This commit implements the ability to deprecate certain instances,
which causes the compiler to emit the desired deprecation message
whenever they are instantiated. For example:
module A where
class C t where
instance {-# DEPRECATED "dont use" #-} C Int where
module B where
import A
f :: C t => t
f = undefined
g :: Int
g = f -- "dont use" emitted here
The implementation is as follows:
- In the parser, we parse deprecations/warnings attached to instances:
instance {-# DEPRECATED "msg" #-} Show X
deriving instance {-# WARNING "msg2" #-} Eq Y
(Note that non-standalone deriving instance declarations do not support
this mechanism.)
- We store the resulting warning message in `ClsInstDecl` (respectively, `DerivDecl`).
In `GHC.Tc.TyCl.Instance.tcClsInstDecl` (respectively, `GHC.Tc.Deriv.Utils.newDerivClsInst`),
we pass on that information to `ClsInst` (and eventually store it in `IfaceClsInst` too).
- Finally, when we solve a constraint using such an instance, in
`GHC.Tc.Instance.Class.matchInstEnv`, we emit the appropriate warning
that was stored in `ClsInst`.
Note that we only emit a warning when the instance is used in a different module
than it is defined, which keeps the behaviour in line with the deprecation of
top-level identifiers.
Signed-off-by: Bartłomiej Cieślar <bcieslar2001(a)gmail.com>
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d5a65af6 by Ben Gamari at 2023-08-01T14:47:18-04:00
compiler: Style fixes
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7218c80a by Ben Gamari at 2023-08-01T14:47:19-04:00
rts: Fix implicit cast
This ensures that Task.h can be built with a C++ compiler.
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d6d5aafc by Ben Gamari at 2023-08-01T14:47:19-04:00
testsuite: Fix warning in hs_try_putmvar001
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d9eddf7a by Ben Gamari at 2023-08-01T14:47:19-04:00
testsuite: Add AtomicModifyIORef test
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f9eea4ba by Ben Gamari at 2023-08-01T14:47:19-04:00
rts: Introduce NO_WARN macro
This allows fine-grained ignoring of warnings.
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497b24ec by Ben Gamari at 2023-08-01T14:47:19-04:00
rts: Simplify atomicModifyMutVar2# implementation
Previously we would perform a redundant load in the non-threaded RTS in
atomicModifyMutVar2# implementation for the benefit of the non-moving
GC's write barrier. Eliminate this.
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52ee082b by Ben Gamari at 2023-08-01T14:47:19-04:00
rts: Introduce more principled fence operations
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cd3c0377 by Ben Gamari at 2023-08-01T14:47:19-04:00
rts: Introduce SET_INFO_RELAXED
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6df2352a by Ben Gamari at 2023-08-01T14:47:19-04:00
rts: Style fixes
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4ef6f319 by Ben Gamari at 2023-08-01T14:47:19-04:00
codeGen/tsan: Rework handling of spilling
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f9ca7e27 by Ben Gamari at 2023-08-01T14:47:19-04:00
hadrian: More debug information
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df4153ac by Ben Gamari at 2023-08-01T14:47:19-04:00
Improve TSAN documentation
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fecae988 by Ben Gamari at 2023-08-01T14:47:19-04:00
hadrian: More selective TSAN instrumentation
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465a9a0b by Alan Zimmerman at 2023-08-01T14:47:56-04:00
EPA: Provide correct annotation span for ImportDecl
Use the whole declaration, rather than just the span of the 'import'
keyword.
Metric Decrease:
T9961
T5205
Metric Increase:
T13035
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ae63d0fa by Bartłomiej Cieślar at 2023-08-01T14:48:40-04:00
Add cases to T23279: HasField for deprecated record fields
This commit adds additional tests from ticket #23279 to ensure that we don't
regress on reporting deprecated record fields in conjunction with HasField,
either when using overloaded record dot syntax or directly through `getField`.
Fixes #23279
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00fb6e6b by Andreas Klebinger at 2023-08-01T14:49:17-04:00
AArch NCG: Pure refactor
Combine some alternatives. Add some line breaks for overly long lines
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8f3b3b78 by Andreas Klebinger at 2023-08-01T14:49:54-04:00
Aarch ncg: Optimize immediate use for address calculations
When the offset doesn't fit into the immediate we now just reuse the
general getRegister' code path which is well optimized to compute the
offset into a register instead of a special case for CmmRegOff.
This means we generate a lot less code under certain conditions which is
why performance metrics for these improve.
-------------------------
Metric Decrease:
T4801
T5321FD
T5321Fun
-------------------------
- - - - -
74a882dc by MorrowM at 2023-08-02T06:00:03-04:00
Add a RULE to make lookup fuse
See https://github.com/haskell/core-libraries-committee/issues/175
Metric Increase:
T18282
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cca74dab by Ben Gamari at 2023-08-02T06:00:39-04:00
hadrian: Ensure that way-flags are passed to CC
Previously the way-specific compilation flags (e.g. `-DDEBUG`,
`-DTHREADED_RTS`) would not be passed to the CC invocations. This meant
that C dependency files would not correctly reflect
dependencies predicated on the way, resulting in the rather
painful #23554.
Closes #23554.
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622b483c by Jaro Reinders at 2023-08-02T06:01:20-04:00
Native 32-bit Enum Int64/Word64 instances
This commits adds more performant Enum Int64 and Enum Word64 instances
for 32-bit platforms, replacing the Integer-based implementation.
These instances are a copy of the Enum Int and Enum Word instances with
minimal changes to manipulate Int64 and Word64 instead.
On i386 this yields a 1.5x performance increase and for the JavaScript
back end it even yields a 5.6x speedup.
Metric Decrease:
T18964
- - - - -
c8bd7fa4 by Sylvain Henry at 2023-08-02T06:02:03-04:00
JS: fix typos in constants (#23650)
- - - - -
b9d5bfe9 by Josh Meredith at 2023-08-02T06:02:40-04:00
JavaScript: update MK_TUP macros to use current tuple constructors (#23659)
- - - - -
28211215 by Matthew Pickering at 2023-08-02T06:03:19-04:00
ci: Pass -Werror when building hadrian in hadrian-ghc-in-ghci job
Warnings when building Hadrian can end up cluttering the output of HLS,
and we've had bug reports in the past about these warnings when building
Hadrian. It would be nice to turn on -Werror on at least one build of
Hadrian in CI to avoid a patch introducing warnings when building
Hadrian.
Fixes #23638
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aca20a5d by Ben Gamari at 2023-08-02T06:03:55-04:00
codeGen: Ensure that TSAN is aware of writeArray# write barriers
By using a proper release store instead of a fence.
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453c0531 by Ben Gamari at 2023-08-02T06:03:55-04:00
codeGen: Ensure that array reads have necessary barriers
This was the cause of #23541.
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93a0d089 by Arnaud Spiwack at 2023-08-02T06:04:37-04:00
Add test for #23550
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6a2f4a20 by Arnaud Spiwack at 2023-08-02T06:04:37-04:00
Desugar non-recursive lets to non-recursive lets (take 2)
This reverts commit 522bd584f71ddeda21efdf0917606ce3d81ec6cc. And
takes care of the case that I missed in my previous attempt. Namely
the case of an AbsBinds with no type variables and no dictionary
variable.
Ironically, the comment explaining why non-recursive lets were
desugared to recursive lets were pointing specifically at this case
as the reason. I just failed to understand that it was until Simon PJ
pointed it out to me.
See #23550 for more discussion.
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ff81d53f by jade at 2023-08-02T06:05:20-04:00
Expand documentation of List & Data.List
This commit aims to improve the documentation and examples
of symbols exported from Data.List
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fa4e5913 by Jade at 2023-08-02T06:06:03-04:00
Improve documentation of Semigroup & Monoid
This commit aims to improve the documentation of various symbols
exported from Data.Semigroup and Data.Monoid
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e2c91bff by Gergő Érdi at 2023-08-03T02:55:46+01:00
Desugar bindings in the context of their evidence
Closes #23172
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481f4a46 by Gergő Érdi at 2023-08-03T07:48:43+01:00
Add flag to `-f{no-}specialise-incoherents` to enable/disable specialisation of
incoherent instances
Fixes #23287
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d751c583 by Profpatsch at 2023-08-04T12:24:26-04:00
base: Improve String & IsString documentation
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01db1117 by Ben Gamari at 2023-08-04T12:25:02-04:00
rts/win32: Ensure reliability of IO manager shutdown
When the Win32 threaded IO manager shuts down, `ioManagerDie` sends an
`IO_MANAGER_DIE` event to the IO manager thread using the
`io_manager_event` event object. Finally, it will closes the event object,
and invalidate `io_manager_event`.
Previously, `readIOManagerEvent` would see that `io_manager_event` is
invalid and return `0`, suggesting that everything is right with the
world. This meant that if `ioManagerDie` invalidated the handle before
the event manager was blocked on the event we would end up in a
situation where the event manager would never realize it was asked to
shut down.
Fix this by ensuring that `readIOManagerEvent` instead returns
`IO_MANAGER_DIE` when we detect that the event object has been
invalidated by `ioManagerDie`.
Fixes #23691.
- - - - -
fdef003a by Ryan Scott at 2023-08-04T12:25:39-04:00
Look through TH splices in splitHsApps
This modifies `splitHsApps` (a key function used in typechecking function
applications) to look through untyped TH splices and quasiquotes. Not doing so
was the cause of #21077. This builds on !7821 by making `splitHsApps` match on
`HsUntypedSpliceTop`, which contains the `ThModFinalizers` that must be run as
part of invoking the TH splice. See the new `Note [Looking through Template
Haskell splices in splitHsApps]` in `GHC.Tc.Gen.Head`.
Along the way, I needed to make the type of `splitHsApps.set` slightly more
general to accommodate the fact that the location attached to a quasiquote is
a `SrcAnn NoEpAnns` rather than a `SrcSpanAnnA`.
Fixes #21077.
- - - - -
e77a0b41 by Ben Gamari at 2023-08-04T12:26:15-04:00
Bump deepseq submodule to 1.5.
And bump bounds
(cherry picked from commit 1228d3a4a08d30eaf0138a52d1be25b38339ef0b)
- - - - -
cebb5819 by Ben Gamari at 2023-08-04T12:26:15-04:00
configure: Bump minimal boot GHC version to 9.4
(cherry picked from commit d3ffdaf9137705894d15ccc3feff569d64163e8e)
- - - - -
83766dbf by Ben Gamari at 2023-08-04T12:26:15-04:00
template-haskell: Bump version to 2.21.0.0
Bumps exceptions submodule.
(cherry picked from commit bf57fc9aea1196f97f5adb72c8b56434ca4b87cb)
- - - - -
1211112a by Ben Gamari at 2023-08-04T12:26:15-04:00
base: Bump version to 4.19
Updates all boot library submodules.
(cherry picked from commit 433d99a3c24a55b14ec09099395e9b9641430143)
- - - - -
3ab5efd9 by Ben Gamari at 2023-08-04T12:26:15-04:00
testsuite: Normalise versions more aggressively
In backpack hashes can contain `+` characters.
(cherry picked from commit 024861af51aee807d800e01e122897166a65ea93)
- - - - -
d52be957 by Ben Gamari at 2023-08-04T12:26:15-04:00
testsuite: Declare bkpcabal08 as fragile
Due to spurious output changes described in #23648.
(cherry picked from commit c046a2382420f2be2c4a657c56f8d95f914ea47b)
- - - - -
e75a58d1 by Ben Gamari at 2023-08-04T12:26:15-04:00
gitlab-ci: Only mark linker_unload_native as broken in static jobs
This test passes on dynamically-linked Alpine.
(cherry picked from commit f356a7e8ec8ec3d6b2b30fd175598b9b80065d87)
- - - - -
8b176514 by Ben Gamari at 2023-08-04T12:26:15-04:00
testsuite: Update base-exports
- - - - -
4b647936 by Ben Gamari at 2023-08-04T12:26:15-04:00
testsuite/interface-stability: normalise versions
This eliminates spurious changes from version bumps.
- - - - -
0eb54c05 by Ben Gamari at 2023-08-04T12:26:51-04:00
linker/PEi386: Don't sign-extend symbol section number
Previously we incorrectly interpreted PE section numbers as signed
values. However, this isn't the case; rather, it's an unsigned 16-bit number
with a few special bit-patterns (0xffff and 0xfffe). This resulted in #22941
as the linker would conclude that the sections were invalid.
Fixing this required quite a bit of refactoring.
Closes #22941.
- - - - -
fd7ce39c by Ben Gamari at 2023-08-04T12:27:28-04:00
testsuite: Mark MulMayOflo_full as broken rather than skipping
To ensure that we don't accidentally fix it.
See #23742.
- - - - -
824092f2 by Ben Gamari at 2023-08-04T12:27:28-04:00
nativeGen/AArch64: Fix sign extension in MulMayOflo
Previously the 32-bit implementations of MulMayOflo would use the
a non-sensical sign-extension mode. Rewrite these to reflect what gcc 11
produces. Also similarly rework the 16- and 8-bit cases.
This now passes the MulMayOflo tests in ghc/test-primops> in all four
widths, including the precision tests.
Fixes #23721.
- - - - -
1b15dbc4 by Jan Hrček at 2023-08-04T12:28:08-04:00
Fix haddock markup in code example for coerce
- - - - -
46fd8ced by Vladislav Zavialov at 2023-08-04T12:28:44-04:00
Fix (~) and (@) infix operators in TH splices (#23748)
8168b42a "Whitespace-sensitive bang patterns" allows GHC to accept
the following infix operators:
a ~ b = ()
a @ b = ()
But not if TH is used to generate those declarations:
$([d| a ~ b = ()
a @ b = ()
|])
-- Test.hs:5:2: error: [GHC-55017]
-- Illegal variable name: ‘~’
-- When splicing a TH declaration: (~_0) a_1 b_2 = GHC.Tuple.Prim.()
This is easily fixed by modifying `reservedOps` in GHC.Utils.Lexeme
- - - - -
a1899d8f by Aaron Allen at 2023-08-04T12:29:24-04:00
[#23663] Show Flag Suggestions in GHCi
Makes suggestions when using `:set` in GHCi with a misspelled flag. This
mirrors how invalid flags are handled when passed to GHC directly. Logic
for producing flag suggestions was moved to GHC.Driver.Sesssion so it
can be shared.
resolves #23663
- - - - -
03f2debd by Rodrigo Mesquita at 2023-08-04T12:30:00-04:00
Improve ghc-toolchain validation configure warning
Fixes the layout of the ghc-toolchain validation warning produced by
configure.
- - - - -
de25487d by Alan Zimmerman at 2023-08-04T12:30:36-04:00
EPA make getLocA a synonym for getHasLoc
This is basically a no-op change, but allows us to make future changes
that can rely on the HasLoc instances
And I presume this means we can use more precise functions based on
class resolution, so the Windows CI build reports
Metric Decrease:
T12234
T13035
- - - - -
3ac423b9 by Ben Gamari at 2023-08-04T12:31:13-04:00
ghc-platform: Add upper bound on base
Hackage upload requires this.
- - - - -
8ba20b21 by Matthew Craven at 2023-08-04T17:22:59-04:00
Adjust and clarify handling of primop effects
Fixes #17900; fixes #20195.
The existing "can_fail" and "has_side_effects" primop attributes
that previously governed this were used in inconsistent and
confusingly-documented ways, especially with regard to raising
exceptions. This patch replaces them with a single "effect"
attribute, which has four possible values: NoEffect, CanFail,
ThrowsException, and ReadWriteEffect. These are described in
Note [Classifying primop effects].
A substantial amount of related documentation has been re-drafted
for clarity and accuracy.
In the process of making this attribute format change for literally
every primop, several existing mis-classifications were detected and
corrected. One of these mis-classifications was tagToEnum#, which
is now considered CanFail; this particular fix is known to cause a
regression in performance for derived Enum instances. (See #23782.)
Fixing this is left as future work.
New primop attributes "cheap" and "work_free" were also added,
and used in the corresponding parts of GHC.Core.Utils.
In view of their actual meaning and uses, `primOpOkForSideEffects`
and `exprOkForSideEffects` have been renamed to `primOpOkToDiscard`
and `exprOkToDiscard`, respectively.
Metric Increase:
T21839c
- - - - -
41bf2c09 by sheaf at 2023-08-04T17:23:42-04:00
Update inert_solved_dicts for ImplicitParams
When adding an implicit parameter dictionary to the inert set, we must
make sure that it replaces any previous implicit parameter dictionaries
that overlap, in order to get the appropriate shadowing behaviour, as in
let ?x = 1 in let ?x = 2 in ?x
We were already doing this for inert_cans, but we weren't doing the same
thing for inert_solved_dicts, which lead to the bug reported in #23761.
The fix is thus to make sure that, when handling an implicit parameter
dictionary in updInertDicts, we update **both** inert_cans and
inert_solved_dicts to ensure a new implicit parameter dictionary
correctly shadows old ones.
Fixes #23761
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43578d60 by Matthew Craven at 2023-08-05T01:05:36-04:00
Bump bytestring submodule to 0.11.5.1
- - - - -
91353622 by Ben Gamari at 2023-08-05T01:06:13-04:00
Initial commit of Note [Thunks, blackholes, and indirections]
This Note attempts to summarize the treatment of thunks, thunk update,
and indirections.
This fell out of work on #23185.
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8d686854 by sheaf at 2023-08-05T01:06:54-04:00
Remove zonk in tcVTA
This removes the zonk in GHC.Tc.Gen.App.tc_inst_forall_arg and its
accompanying Note [Visible type application zonk]. Indeed, this zonk
is no longer necessary, as we no longer maintain the invariant that
types are well-kinded without zonking; only that typeKind does not
crash; see Note [The Purely Kinded Type Invariant (PKTI)].
This commit removes this zonking step (as well as a secondary zonk),
and replaces the aforementioned Note with the explanatory
Note [Type application substitution], which justifies why the
substitution performed in tc_inst_forall_arg remains valid without
this zonking step.
Fixes #23661
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19dea673 by Ben Gamari at 2023-08-05T01:07:30-04:00
Bump nofib submodule
Ensuring that nofib can be build using the same range of bootstrap
compilers as GHC itself.
- - - - -
aa07402e by Luite Stegeman at 2023-08-05T23:15:55+09:00
JS: Improve compatibility with recent emsdk
The JavaScript code in libraries/base/jsbits/base.js had some
hardcoded offsets for fields in structs, because we expected
the layout of the data structures to remain unchanged. Emsdk
3.1.42 changed the layout of the stat struct, breaking this
assumption, and causing code in .hsc files accessing the
stat struct to fail.
This patch improves compatibility with recent emsdk by
removing the assumption that data layouts stay unchanged:
1. offsets of fields in structs used by JavaScript code are
now computed by the configure script, so both the .js and
.hsc files will automatically use the new layout if anything
changes.
2. the distrib/configure script checks that the emsdk version
on a user's system is the same version that a bindist was
booted with, to avoid data layout inconsistencies
See #23641
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b938950d by Luite Stegeman at 2023-08-07T06:27:51-04:00
JS: Fix missing local variable declarations
This fixes some missing local variable declarations that were
found by running the testsuite in strict mode.
Fixes #23775
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6c0e2247 by sheaf at 2023-08-07T13:31:21-04:00
Update Haddock submodule to fix #23368
This submodule update adds the following three commits:
bbf1c8ae - Check for puns
0550694e - Remove fake exports for (~), List, and Tuple<n>
5877bceb - Fix pretty-printing of Solo and MkSolo
These commits fix the issues with Haddock HTML rendering reported in
ticket #23368.
Fixes #23368
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5b5be3ea by Matthew Pickering at 2023-08-07T13:32:00-04:00
Revert "Bump bytestring submodule to 0.11.5.1"
This reverts commit 43578d60bfc478e7277dcd892463cec305400025.
Fixes #23789
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01961be3 by Ben Gamari at 2023-08-08T02:47:14-04:00
configure: Derive library version from ghc-prim.cabal.in
Since ghc-prim.cabal is now generated by Hadrian, we cannot depend upon
it.
Closes #23726.
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3b373838 by Ryan Scott at 2023-08-08T02:47:49-04:00
tcExpr: Push expected types for untyped TH splices inwards
In !10911, I deleted a `tcExpr` case for `HsUntypedSplice` in favor of a much
simpler case that simply delegates to `tcApp`. Although this passed the test
suite at the time, this was actually an error, as the previous `tcExpr` case
was critically pushing the expected type inwards. This actually matters for
programs like the one in #23796, which GHC would not accept with type inference
alone—we need full-blown type _checking_ to accept these.
I have added back the previous `tcExpr` case for `HsUntypedSplice` and now
explain why we have two different `HsUntypedSplice` cases (one in `tcExpr` and
another in `splitHsApps`) in `Note [Looking through Template Haskell splices in
splitHsApps]` in `GHC.Tc.Gen.Head`.
Fixes #23796.
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0ef1d8ae by sheaf at 2023-08-08T21:26:51-04:00
Compute all emitted diagnostic codes
This commit introduces in GHC.Types.Error.Codes the function
constructorCodes :: forall diag. (...) => Map DiagnosticCode String
which computes a collection of all the diagnostic codes that correspond
to a particular type. In particular, we can compute the collection of
all diagnostic codes emitted by GHC using the invocation
constructorCodes @GhcMessage
We then make use of this functionality in the new "codes" test which
checks consistency and coverage of GHC diagnostic codes.
It performs three checks:
- check 1: all non-outdated GhcDiagnosticCode equations
are statically used.
- check 2: all outdated GhcDiagnosticCode equations
are statically unused.
- check 3: all statically used diagnostic codes are covered by
the testsuite (modulo accepted exceptions).
- - - - -
4bc7b1e5 by Fraser Tweedale at 2023-08-08T21:27:32-04:00
numberToRangedRational: fix edge cases for exp ≈ (maxBound :: Int)
Currently a negative exponent less than `minBound :: Int` results in
Infinity, which is very surprising and obviously wrong.
```
λ> read "1e-9223372036854775808" :: Double
0.0
λ> read "1e-9223372036854775809" :: Double
Infinity
```
There is a further edge case where the exponent can overflow when
increased by the number of tens places in the integer part, or
underflow when decreased by the number of leading zeros in the
fractional part if the integer part is zero:
```
λ> read "10e9223372036854775807" :: Double
0.0
λ> read "0.01e-9223372036854775808" :: Double
Infinity
```
To resolve both of these issues, perform all arithmetic and
comparisons involving the exponent in type `Integer`. This approach
also eliminates the need to explicitly check the exponent against
`maxBound :: Int` and `minBound :: Int`, because the allowed range
of the exponent (i.e. the result of `floatRange` for the target
floating point type) is certainly within those bounds.
This change implements CLC proposal 192:
https://github.com/haskell/core-libraries-committee/issues/192
- - - - -
6eab07b2 by Alan Zimmerman at 2023-08-08T21:28:10-04:00
EPA: Remove Location from WarningTxt source
This is not needed.
- - - - -
1a98d673 by Sebastian Graf at 2023-08-09T16:24:29-04:00
Cleanup a TODO introduced in 1f94e0f7
The change must have slipped through review of !4412
- - - - -
2274abc8 by Sebastian Graf at 2023-08-09T16:24:29-04:00
More explicit strictness in GHC.Real
- - - - -
ce8aa54c by Sebastian Graf at 2023-08-09T16:24:30-04:00
exprIsTrivial: Factor out shared implementation
The duplication between `exprIsTrivial` and `getIdFromTrivialExpr_maybe` has
been bugging me for a long time.
This patch introduces an inlinable worker function `trivial_expr_fold` acting
as the single, shared decision procedure of triviality. It "returns" a
Church-encoded `Maybe (Maybe Id)`, so when it is inlined, it fuses to similar
code as before.
(Better code, even, in the case of `getIdFromTrivialExpr` which presently
allocates a `Just` constructor that cancels away after this patch.)
- - - - -
d004a36d by Sebastian Graf at 2023-08-09T16:24:30-04:00
Simplify: Simplification of arguments in a single function
The Simplifier had a function `simplArg` that wasn't called in `rebuildCall`,
which seems to be the main way to simplify args. Hence I consolidated the code
path to call `simplArg`, too, renaming to `simplLazyArg`.
- - - - -
8c73505e by Sebastian Graf at 2023-08-09T16:24:30-04:00
Core.Ppr: Omit case binder for empty case alternatives
A minor improvement to pretty-printing
- - - - -
d8d993f1 by Sebastian Graf at 2023-08-09T16:24:30-04:00
Disable tests RepPolyWrappedVar2 and RepPolyUnsafeCoerce1 in JS backend
... because those coerce between incompatible/unknown PrimReps.
- - - - -
f06e87e4 by Sebastian Graf at 2023-08-09T16:24:30-04:00
Inlining literals into boring contexts is OK
- - - - -
4a6b7c87 by Sebastian Graf at 2023-08-09T16:24:30-04:00
Clarify floating of unsafeEqualityProofs (#23754)
- - - - -
b0f4752e by Sebastian Graf at 2023-08-09T16:24:30-04:00
Kill SetLevel.notWorthFloating.is_triv (#23270)
We have had it since b84ba676034, when it operated on annotated expressions.
Nowadays it operates on vanilla `CoreExpr` though, so we should just call
`exprIsTrivial`; thus handling empty cases and string literals correctly.
- - - - -
7e0c8b3b by Sebastian Graf at 2023-08-09T16:24:30-04:00
ANFise string literal arguments (#23270)
This instates the invariant that a trivial CoreExpr translates to an atomic
StgExpr. Nice.
Annoyingly, in -O0 we sometimes generate
```
foo = case "blah"# of sat { __DEFAULT -> unpackCString# sat }
```
which makes it a bit harder to spot that we can emit a standard
`stg_unpack_cstring` thunk.
Fixes #23270.
- - - - -
357f2738 by Sebastian Graf at 2023-08-09T16:24:30-04:00
Deactivate -fcatch-nonexhaustive-cases in ghc-bignum (#23345)
- - - - -
59202c80 by Sebastian Graf at 2023-08-09T16:24:30-04:00
CorePrep: Eliminate EmptyCase and unsafeEqualityProof in CoreToStg instead
We eliminate EmptyCase by way of `coreToStg (Case e _ _ []) = coreToStg e` now.
The main reason is that it plays far better in conjunction with eta expansion
(as we aim to do for arguments in CorePrep, #23083), because we can discard
any arguments, `(case e of {}) eta == case e of {}`, whereas in `(e |> co) eta`
it's impossible to discard the argument.
We do also give the same treatment to unsafeCoerce proofs and treat them as
trivial iff their RHS is trivial.
It is also both much simpler to describe than the previous mechanism of emitting
an unsafe coercion and simpler to implement, removing quite a bit of commentary
and `CorePrepProv`.
In the ghc/alloc perf test `LargeRecord`, we introduce an additional Simplifier
iteration due to #17910. E.g., FloatOut produces a binding
```
lvl_s6uK [Occ=Once1] :: GHC.Types.Int
[LclId]
lvl_s6uK = GHC.Types.I# 2#
lvl_s6uL [Occ=Once1] :: GHC.Types.Any
[LclId]
lvl_s6uL
= case Unsafe.Coerce.unsafeEqualityProof ... of
{ Unsafe.Coerce.UnsafeRefl v2_i6tr -> lvl_s6uK `cast` (... v2_i6tr ...)
}
```
That occurs once and hence is pre-inlined unconditionally in the next Simplifier
pass. It's non-trivial to find a way around that, but not really harmful
otherwise. Hence we accept a 1.2% increase on some architectures.
Metric Increase:
LargeRecord
- - - - -
00d31188 by Sebastian Graf at 2023-08-09T16:24:30-04:00
CorePrep: Eta expand arguments (#23083)
Previously, we'd only eta expand let bindings and lambdas,
now we'll also eta expand arguments such as in T23083:
```hs
g f h = f (h `seq` (h $))
```
Unless `-fpedantic-bottoms` is set, we'll now transform to
```hs
g f h = f (\eta -> h eta)
```
in CorePrep.
See the new `Note [Eta expansion of arguments in CorePrep]` for the details.
We only do this optimisation with -O2 because we saw 2-3% ghc/alloc regressions
in T4801 and T5321FD.
Fixes #23083.
- - - - -
bf885d7a by Matthew Craven at 2023-08-09T16:25:07-04:00
Bump bytestring submodule to 0.11.5, again
Fixes #23789.
The bytestring commit used here is unreleased;
a release can be made when necessary.
- - - - -
7acbf0fd by Sven Tennie at 2023-08-10T19:17:11-04:00
Serialize CmmRetInfo in .rodata
The handling of case was missing.
- - - - -
0c3136f2 by Sven Tennie at 2023-08-10T19:17:11-04:00
Reference StgRetFun payload by its struct field address
This is easier to grasp than relative pointer offsets.
- - - - -
f68ff313 by Sven Tennie at 2023-08-10T19:17:11-04:00
Better variable name: u -> frame
The 'u' was likely introduced by copy'n'paste.
- - - - -
0131bb7f by Sven Tennie at 2023-08-10T19:17:11-04:00
Make checkSTACK() public
Such that it can also be used in tests.
- - - - -
7b6e1e53 by Sven Tennie at 2023-08-10T19:17:11-04:00
Publish stack related fields in DerivedConstants.h
These will be used in ghc-heap to decode these parts of the stack.
- - - - -
907ed054 by Sven Tennie at 2023-08-10T19:17:11-04:00
ghc-heap: Decode StgStack and its stack frames
Previously, ghc-heap could only decode heap closures.
The approach is explained in detail in note
[Decoding the stack].
- - - - -
6beb6ac2 by Sven Tennie at 2023-08-10T19:17:11-04:00
Remove RetFunType from RetFun stack frame representation
It's a technical detail. The single usage is replaced by a predicate.
- - - - -
006bb4f3 by Sven Tennie at 2023-08-10T19:17:11-04:00
Better parameter name
The call-site uses the term "offset", too.
- - - - -
d4c2c1af by Sven Tennie at 2023-08-10T19:17:11-04:00
Make closure boxing pure
There seems to be no need to do something complicated. However, the
strictness of the closure pointer matters, otherwise a thunk gets
decoded.
- - - - -
8d8426c9 by Sven Tennie at 2023-08-10T19:17:11-04:00
Document entertainGC in test
It wasn't obvious why it's there and what its role is.
Also, increase the "entertainment level" a bit.
I checked in STG and Cmm dumps that this really generates closures (and
is not e.g. constant folded away.)
- - - - -
cc52c358 by Finley McIlwaine at 2023-08-10T19:17:47-04:00
Add -dipe-stats flag
This is useful for seeing which info tables have information.
- - - - -
261c4acb by Finley McIlwaine at 2023-08-10T19:17:47-04:00
Add -finfo-table-map-with-fallback -finfo-table-map-with-stack
The -fno-info-table-map-with-stack flag omits STACK info tables from the info
table map, and the -fno-info-table-map-with-fallback flag omits info tables
with defaulted source locations from the map. In a test on the Agda codebase
the build results were about 7% smaller when both of those types of tables
were omitted.
Adds a test that verifies that passing each combination of these flags
results in the correct output for -dipe-stats, which is disabled for the js
backend since profiling is not implemented.
This commit also refactors a lot of the logic around extracting info tables
from the Cmm results and building the info table map.
This commit also fixes some issues in the users guide rst source to fix
warnings that were noticed while debugging the documentation for these flags.
Fixes #23702
- - - - -
d7047e0d by Jaro Reinders at 2023-08-14T04:41:42-04:00
Add changelog entry for specialised Enum Int64/Word64 instances
- - - - -
52f5e8fb by cydparser at 2023-08-14T04:42:20-04:00
Fix -ddump-to-file and -ddump-timings interaction (#20316)
- - - - -
1274c5d6 by cydparser at 2023-08-14T04:42:20-04:00
Update release notes (#20316)
- - - - -
8e699b23 by Matthew Pickering at 2023-08-14T10:44:47-04:00
base: Add changelog entry for CLC #188
This proposal modified the implementations of copyBytes, moveBytes and
fillBytes (as detailed in the proposal)
https://github.com/haskell/core-libraries-committee/issues/188
- - - - -
026f040a by Matthew Pickering at 2023-08-14T10:45:23-04:00
packaging: Build manpage in separate directory to other documentation
We were installing two copies of the manpage:
* One useless one in the `share/doc` folder, because we copy the doc/
folder into share/
* The one we deliberately installed into `share/man` etc
The solution is to build the manpage into the `manpage` directory when
building the bindist, and then just install it separately.
Fixes #23707
- - - - -
524c60c8 by Bartłomiej Cieślar at 2023-08-14T13:46:33-04:00
Report deprecated fields bound by record wildcards when used
This commit ensures that we emit the appropriate warnings when
a deprecated record field bound by a record wildcard is used.
For example:
module A where
data Foo = Foo {x :: Int, y :: Bool, z :: Char}
{-# DEPRECATED x "Don't use x" #-}
{-# WARNING y "Don't use y" #-}
module B where
import A
foo (Foo {..}) = x
This will cause us to emit a "Don't use x" warning, with location the
location of the record wildcard. Note that we don't warn about `y`,
because it is unused in the RHS of `foo`.
Fixes #23382
- - - - -
d6130065 by Matthew Pickering at 2023-08-14T13:47:11-04:00
Add zstd suffix to jobs which rely on zstd
This was causing some confusion as the job was named simply
"x86_64-linux-deb10-validate", which implies a standard configuration
rather than any dependency on libzstd.
- - - - -
e24e44fc by Matthew Pickering at 2023-08-14T13:47:11-04:00
ci: Always run project-version job
This is needed for the downstream test-primops pipeline to workout what
the version of a bindist produced by a pipeline is.
- - - - -
f17b9d62 by Matthew Pickering at 2023-08-14T13:47:11-04:00
gen_ci: Rework how jobs-metadata.json is generated
* We now represent a job group a triple of Maybes, which makes it easier
to work out when jobs are enabled/disabled on certain pipelines.
```
data JobGroup a = StandardTriple { v :: Maybe (NamedJob a)
, n :: Maybe (NamedJob a)
, r :: Maybe (NamedJob a) }
```
* `jobs-metadata.json` generation is reworked using the following
algorithm.
- For each pipeline type, find all the platforms we are doing builds
for.
- Select one build per platform
- Zip together the results
This way we can choose different pipelines for validate/nightly/release
which makes the metadata also useful for validate pipelines. This
feature is used by the test-primops downstream CI in order to select the
right bindist for testing validate pipelines.
This makes it easier to inspect which jobs are going to be enabled on a
particular pipeline.
- - - - -
f9a5563d by Matthew Pickering at 2023-08-14T13:47:11-04:00
gen_ci: Rules rework
In particular we now distinguish between whether we are dealing with a
Nightly/Release pipeline (which labels don't matter for) and a validate
pipeline where labels do matter.
The overall goal here is to allow a disjunction of labels for validate
pipelines, for example,
> Run a job if we have the full-ci label or test-primops label
Therefore the "ValidateOnly" rules are treated as a set of disjunctions
rather than conjunctions like before.
What this means in particular is that if we want to ONLY run a job if a
label is set, for example, "FreeBSD" label then we have to override the
whole label set.
Fixes #23772
- - - - -
d54b0c1d by Matthew Pickering at 2023-08-14T13:47:11-04:00
ci: set -e for lint-ci-config scripts
- - - - -
994a9b35 by Matthew Pickering at 2023-08-14T13:47:11-04:00
ci: Fix job metadata generation
- - - - -
e194ed2b by Ben Gamari at 2023-08-15T00:58:09-04:00
users-guide: Note that GHC2021 doesn't include ExplicitNamespaces
As noted in #23801.
- - - - -
d814bda9 by Ben Gamari at 2023-08-15T05:43:53-04:00
users-guide: Support both distutils and packaging
As noted in #23818, some old distributions (e.g. Debian 9) only include
`distutils` while newer distributions only include `packaging`.
Fixes #23818.
- - - - -
1726db3f by Ben Gamari at 2023-08-15T05:43:53-04:00
users-guide: Ensure extlinks is compatible with Sphinx <4
The semantics of the `extlinks` attribute annoyingly changed in Sphinx
4. Reflect this in our configuration. See #22690.
Fixes #23807.
- - - - -
173338cf by Matthew Pickering at 2023-08-15T22:00:24-04:00
ci: Run full-ci on master and release branches
Fixes #23737
- - - - -
bdab6898 by Andrew Lelechenko at 2023-08-15T22:01:03-04:00
Add @since pragmas for Data.Ord.clamp and GHC.Float.clamp
- - - - -
662d351b by Matthew Pickering at 2023-08-16T09:35:04-04:00
ghc-toolchain: Match CPP args with configure script
At the moment we need ghc-toolchain to precisely match the output as
provided by the normal configure script. The normal configure script
(FP_HSCPP_CMD_WITH_ARGS) branches on whether we are using clang or gcc
so we match that logic exactly in ghc-toolchain.
The old implementation (which checks if certain flags are supported) is
better but for now we have to match to catch any potential errors in the
configuration.
Ticket: #23720
- - - - -
09c6759e by Matthew Pickering at 2023-08-16T09:35:04-04:00
configure: Fix `-Wl,--no-as-needed` check
The check was failing because the args supplied by $$1 were quoted which
failed because then the C compiler thought they were an input file.
Fixes #23720
- - - - -
2129678b by Matthew Pickering at 2023-08-16T09:35:04-04:00
configure: Add flag which turns ghc-toolchain check into error
We want to catch these errors in CI, but first we need to a flag which
turns this check into an error.
- - - - -
6e2aa8e0 by Matthew Pickering at 2023-08-16T09:35:04-04:00
ci: Enable --enable-strict-ghc-toolchain-check for all CI jobs
This will cause any CI job to fail if we have a mismatch between what
ghc-toolchain reports and what ./configure natively reports. Fixing
these kinds of issues is highest priority for 9.10 release.
- - - - -
12d39e24 by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00
Pass user-specified options to ghc-toolchain
The current user interface to configuring target toolchains is `./configure`.
In !9263 we added a new tool to configure target toolchains called
`ghc-toolchain`, but the blessed way of creating these toolchains is
still through configure.
However, we were not passing the user-specified options given with the
`./configure` invocation to the ghc-toolchain tool.
This commit remedies that by storing the user options and environment
variables in USER_* variables, which then get passed to GHC-toolchain.
The exception to the rule is the windows bundled toolchain, which
overrides the USER_* variables with whatever flags the windows bundled
toolchain requires to work.
We consider the bundled toolchain to be effectively the user specifying
options, since the actual user delegated that configuration work.
Closes #23678
- - - - -
f7b3c3a0 by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00
ghc-toolchain: Parse javascript and ghcjs as a Arch and OS
- - - - -
8a0ae4ee by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00
ghc-toolchain: Fix ranlib option
- - - - -
31e9ec96 by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00
Check Link Works with -Werror
- - - - -
bc1998b3 by Matthew Pickering at 2023-08-16T09:35:04-04:00
Only check for no_compact_unwind support on darwin
While writing ghc-toolchain we noticed that the
FP_PROG_LD_NO_COMPACT_UNWIND check is subtly wrong. Specifically, we
pass -Wl,-no_compact_unwind to cc. However, ld.gold interprets this as
-n o_compact_unwind, which is a valid argument.
Fixes #23676
- - - - -
0283f36e by Matthew Pickering at 2023-08-16T09:35:04-04:00
Add some javascript special cases to ghc-toolchain
On javascript there isn't a choice of toolchain but some of the
configure checks were not accurately providing the correct answer.
1. The linker was reported as gnu LD because the --version output
mentioned gnu LD.
2. The --target flag makes no sense on javascript but it was just
ignored by the linker, so we add a special case to stop ghc-toolchain
thinking that emcc supports --target when used as a linker.
- - - - -
a48ec5f8 by Matthew Pickering at 2023-08-16T09:35:04-04:00
check for emcc in gnu_LD check
- - - - -
50df2e69 by Matthew Pickering at 2023-08-16T09:35:04-04:00
Add ldOverrideWhitelist to only default to ldOverride on windows/linux
On some platforms - ie darwin, javascript etc we really do not want to
allow the user to use any linker other than the default one as this
leads to all kinds of bugs. Therefore it is a bit more prudant to add a
whitelist which specifies on which platforms it might be possible to use
a different linker.
- - - - -
a669a39c by Matthew Pickering at 2023-08-16T09:35:04-04:00
Fix plaform glob in FPTOOLS_SET_C_LD_FLAGS
A normal triple may look like
x86_64-unknown-linux
but when cross-compiling you get $target set to a quad such as..
aarch64-unknown-linux-gnu
Which should also match this check.
- - - - -
c52b6769 by Matthew Pickering at 2023-08-16T09:35:04-04:00
ghc-toolchain: Pass ld-override onto ghc-toolchain
- - - - -
039b484f by Matthew Pickering at 2023-08-16T09:35:04-04:00
ld override: Make whitelist override user given option
- - - - -
d2b63cbc by Matthew Pickering at 2023-08-16T09:35:05-04:00
ghc-toolchain: Add format mode to normalise differences before diffing.
The "format" mode takes an "--input" and "--ouput" target file and
formats it.
This is intended to be useful on windows where the
configure/ghc-toolchain target files can't be diffed very easily because
the path separators are different.
- - - - -
f2b39e4a by Matthew Pickering at 2023-08-16T09:35:05-04:00
ghc-toolchain: Bump ci-images commit to get new ghc-wasm-meta
We needed to remove -Wno-unused-command-line-argument from the arguments
passed in order for the configure check to report correctly.
See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10976#note_516335
- - - - -
92103830 by Matthew Pickering at 2023-08-16T09:35:05-04:00
configure: MergeObjsCmd - distinguish between empty string and unset variable
If `MergeObjsCmd` is explicitly set to the empty string then we should
assume that MergeObjs is just not supported.
This is especially important for windows where we set MergeObjsCmd to ""
in m4/fp_setup_windows_toolchain.m4.
- - - - -
3500bb2c by Matthew Pickering at 2023-08-16T09:35:05-04:00
configure: Add proper check to see if object merging works
- - - - -
08c9a014 by Matthew Pickering at 2023-08-16T09:35:05-04:00
ghc-toolchain: If MergeObjsCmd is not set, replace setting with Nothing
If the user explicitly chooses to not set a MergeObjsCmd then it is
correct to use Nothing for tgtMergeObjs field in the Target file.
- - - - -
c9071d94 by Matthew Pickering at 2023-08-16T09:35:05-04:00
HsCppArgs: Augment the HsCppOptions
This is important when we pass -I when setting up the windows toolchain.
- - - - -
294a6d80 by Matthew Pickering at 2023-08-16T09:35:05-04:00
Set USER_CPP_ARGS when setting up windows toolchain
- - - - -
bde4b5d4 by Rodrigo Mesquita at 2023-08-16T09:35:05-04:00
Improve handling of Cc as a fallback
- - - - -
f4c1c3a3 by Rodrigo Mesquita at 2023-08-16T09:35:05-04:00
ghc-toolchain: Configure Cpp and HsCpp correctly when user specifies flags
In ghc-toolchain, we were only /not/ configuring required flags when the
user specified any flags at all for the of the HsCpp and Cpp tools.
Otherwise, the linker takes into consideration the user specified flags
to determine whether to search for a better linker implementation, but
already configured the remaining GHC and platform-specific flags
regardless of the user options.
Other Tools consider the user options as a baseline for further
configuration (see `findProgram`), so #23689 is not applicable.
Closes #23689
- - - - -
bfe4ffac by Matthew Pickering at 2023-08-16T09:35:05-04:00
CPP_ARGS: Put new options after user specified options
This matches up with the behaviour of ghc-toolchain, so that the output
of both matches.
- - - - -
a6828173 by Gergő Érdi at 2023-08-16T09:35:41-04:00
If a defaulting plugin made progress, re-zonk wanteds before built-in defaulting
Fixes #23821.
- - - - -
e2b38115 by Sylvain Henry at 2023-08-17T07:54:06-04:00
JS: implement openat(AT_FDCWD...) (#23697)
Use `openSync` to implement `openat(AT_FDCWD...)`.
- - - - -
a975c663 by sheaf at 2023-08-17T07:54:47-04:00
Use unsatisfiable for missing methods w/ defaults
When a class instance has an Unsatisfiable constraint in its context
and the user has not explicitly provided an implementation of a method,
we now always provide a RHS of the form `unsatisfiable @msg`, even
if the method has a default definition available. This ensures that,
when deferring type errors, users get the appropriate error message
instead of a possible runtime loop, if class default methods were
defined recursively.
Fixes #23816
- - - - -
45ca51e5 by Ben Gamari at 2023-08-17T15:16:41-04:00
ghc-internal: Initial commit of the skeleton
- - - - -
88bbf8c5 by Ben Gamari at 2023-08-17T15:16:41-04:00
ghc-experimental: Initial commit
- - - - -
664468c0 by Ben Gamari at 2023-08-17T15:17:17-04:00
testsuite/cloneStackLib: Fix incorrect format specifiers
- - - - -
eaa835bb by Ben Gamari at 2023-08-17T15:17:17-04:00
rts/ipe: Fix const-correctness of IpeBufferListNode
Both info tables and the string table should be `const`
- - - - -
78f6f6fd by Ben Gamari at 2023-08-17T15:17:17-04:00
nonmoving: Drop dead debugging utilities
These are largely superceded by support in the ghc-utils GDB extension.
- - - - -
3f6e8f42 by Ben Gamari at 2023-08-17T15:17:17-04:00
nonmoving: Refactor management of mark thread
Here we refactor that treatment of the worker thread used by the
nonmoving GC for concurrent marking, avoiding creating a new thread with
every major GC cycle. As well, the new scheme is considerably easier to
reason about, consolidating all state in one place, accessed via a small
set of accessors with clear semantics.
- - - - -
88c32b7d by Ben Gamari at 2023-08-17T15:17:17-04:00
testsuite: Skip T23221 in nonmoving GC ways
This test is very dependent upon GC behavior.
- - - - -
381cfaed by Ben Gamari at 2023-08-17T15:17:17-04:00
ghc-heap: Don't expose stack dirty and marking fields
These are GC metadata and are not relevant to the end-user. Moreover,
they are unstable which makes ghc-heap harder to test than necessary.
- - - - -
16828ca5 by Luite Stegeman at 2023-08-21T18:42:53-04:00
bump process submodule to include macOS fix and JS support
- - - - -
b4d5f6ed by Matthew Pickering at 2023-08-21T18:43:29-04:00
ci: Add support for triggering test-primops pipelines
This commit adds 4 ways to trigger testing with test-primops.
1. Applying the ~test-primops label to a validate pipeline.
2. A manually triggered job on a validate pipeline
3. A nightly pipeline job
4. A release pipeline job
Fixes #23695
- - - - -
32c50daa by Matthew Pickering at 2023-08-21T18:43:29-04:00
Add test-primops label support
The test-primops CI job requires some additional builds in the
validation pipeline, so we make sure to enable these jobs when
test-primops label is set.
- - - - -
73ca8340 by Matthew Pickering at 2023-08-21T18:43:29-04:00
Revert "Aarch ncg: Optimize immediate use for address calculations"
This reverts commit 8f3b3b78a8cce3bd463ed175ee933c2aabffc631.
See #23793
- - - - -
5546ad9e by Matthew Pickering at 2023-08-21T18:43:29-04:00
Revert "AArch NCG: Pure refactor"
This reverts commit 00fb6e6b06598752414a0b9a92840fb6ca61338d.
See #23793
- - - - -
02dfcdc2 by Matthew Pickering at 2023-08-21T18:43:29-04:00
Revert "Aarch64 NCG: Use encoded immediates for literals."
This reverts commit 40425c5021a9d8eb5e1c1046e2d5fa0a2918f96c.
See #23793
-------------------------
Metric Increase:
T4801
T5321FD
T5321Fun
-------------------------
- - - - -
7be4a272 by Matthew Pickering at 2023-08-22T08:55:20+01:00
ci: Remove manually triggered test-ci job
This doesn't work on slimmed down pipelines as the needed jobs don't
exist.
If you want to run test-primops then apply the label.
- - - - -
76a4d11b by Jaro Reinders at 2023-08-22T08:08:13-04:00
Remove Ptr example from roles docs
- - - - -
069729d3 by Bryan Richter at 2023-08-22T08:08:49-04:00
Guard against duplicate pipelines in forks
- - - - -
f861423b by Rune K. Svendsen at 2023-08-22T08:09:35-04:00
dump-decls: fix "Ambiguous module name"-error
Fixes errors of the following kind, which happen when dump-decls is run on a package that contains a module name that clashes with that of another package.
```
dump-decls: <no location info>: error:
Ambiguous module name `System.Console.ANSI.Types':
it was found in multiple packages:
ansi-terminal-0.11.4 ansi-terminal-types-0.11.5
```
- - - - -
edd8bc43 by Krzysztof Gogolewski at 2023-08-22T12:31:20-04:00
Fix MultiWayIf linearity checking (#23814)
Co-authored-by: Thomas BAGREL <thomas.bagrel(a)tweag.io>
- - - - -
4ba088d1 by konsumlamm at 2023-08-22T12:32:02-04:00
Update `Control.Concurrent.*` documentation
- - - - -
015886ec by ARATA Mizuki at 2023-08-22T15:13:13-04:00
Support 128-bit SIMD on AArch64 via LLVM backend
- - - - -
52a6d868 by Krzysztof Gogolewski at 2023-08-22T15:13:51-04:00
Testsuite cleanup
- Remove misleading help text in perf_notes, ways are not metrics
- Remove no_print_summary - this was used for Phabricator
- In linters tests, run 'git ls-files' just once.
Previously, it was called on each has_ls_files()
- Add ghc-prim.cabal to gitignore, noticed in #23726
- Remove ghc-prim.cabal, it was accidentally committed in 524c60c8cd
- - - - -
ab40aa52 by Alan Zimmerman at 2023-08-22T15:14:28-04:00
EPA: Use Introduce [DeclTag] in AnnSortKey
The AnnSortKey is used to keep track of the order of declarations for
printing when the container has split them apart.
This applies to HsValBinds and ClassDecl, ClsInstDecl.
When making modifications to the list of declarations, the new order
must be captured for when it must be printed. For each list of
declarations (binds and sigs for a HsValBind) we can just store the
list in order.
To recreate the list when printing, we must merge them, and this is
what the AnnSortKey records. It used to be indexed by SrcSpan, we now
simply index by a marker as to which list to take the next item from.
- - - - -
e7db36c1 by sheaf at 2023-08-23T08:41:28-04:00
Don't attempt pattern synonym error recovery
This commit gets rid of the pattern synonym error recovery mechanism
(recoverPSB). The rationale is that the fake pattern synonym binding
that the recovery mechanism introduced could lead to undesirable
knock-on errors, and it isn't really feasible to conjure up a
satisfactory binding as pattern synonyms can be used both in expressions
and patterns.
See Note [Pattern synonym error recovery] in GHC.Tc.TyCl.PatSyn.
It isn't such a big deal to eagerly fail compilation on a pattern synonym
that doesn't typecheck anyway.
Fixes #23467
- - - - -
6ccd9d65 by Ben Gamari at 2023-08-23T08:42:05-04:00
base: Don't use Data.ByteString.Internals.memcpy
This function is now deprecated from `bytestring`. Use
`Foreign.Marshal.Utils.copyBytes` instead.
Fixes #23880.
- - - - -
0bfa0031 by Matthew Pickering at 2023-08-23T13:43:48-04:00
hadrian: Uniformly pass buildOptions to all builders in runBuilder
In Builder.hs, runBuilderWith mostly ignores the buildOptions in BuildInfo.
This leads to hard to diagnose bugs as any build options you pass with
runBuilderWithCmdOptions are ignored for many builders.
Solution: Uniformly pass buildOptions to the invocation of cmd.
Fixes #23845
- - - - -
9cac8f11 by Matthew Pickering at 2023-08-23T13:43:48-04:00
Abstract windows toolchain setup
This commit splits up the windows toolchain setup logic into two
functions.
* FP_INSTALL_WINDOWS_TOOLCHAIN - deals with downloading the toolchain if
it isn't already downloaded
* FP_SETUP_WINDOWS_TOOLCHAIN - sets the environment variables to point
to the correct place
FP_SETUP_WINDOWS_TOOLCHAIN is abstracted from the location of the mingw
toolchain and also the eventual location where we will install the
toolchain in the installed bindist.
This is the first step towards #23608
- - - - -
6c043187 by Matthew Pickering at 2023-08-23T13:43:48-04:00
Generate build.mk for bindists
The config.mk.in script was relying on some variables which were
supposed to be set by build.mk but therefore never were when used to
install a bindist.
Specifically
* BUILD_PROF_LIBS to determine whether we had profiled libraries or not
* DYNAMIC_GHC_PROGRAMS to determine whether we had shared libraries or
not
Not only were these never set but also not really accurate because you
could have shared libaries but still statically linked ghc executable.
In addition variables like GhcLibWays were just never used, so those
have been deleted from the script.
Now instead we generate a build.mk file which just directly specifies
which RtsWays we have supplied in the bindist and whether we have
DYNAMIC_GHC_PROGRAMS.
- - - - -
fe23629b by Matthew Pickering at 2023-08-23T13:43:48-04:00
hadrian: Add reloc-binary-dist-* targets
This adds a command line option to build a "relocatable" bindist.
The bindist is created by first creating a normal bindist and then
installing it using the `RelocatableBuild=YES` option. This creates a
bindist without any wrapper scripts pointing to the libdir.
The motivation for this feature is that we want to ship relocatable
bindists on windows and this method is more uniform than the ad-hoc
method which lead to bugs such as #23608 and #23476
The relocatable bindist can be built with the "reloc-binary-dist" target
and supports the same suffixes as the normal "binary-dist" command to
specify the compression style.
- - - - -
41cbaf44 by Matthew Pickering at 2023-08-23T13:43:48-04:00
packaging: Fix installation scripts on windows/RelocatableBuild case
This includes quite a lot of small fixes which fix the installation
makefile to work on windows properly. This also required fixing the
RelocatableBuild variable which seemed to have been broken for a long
while.
Sam helped me a lot writing this patch by providing a windows machine to
test the changes. Without him it would have taken ages to tweak
everything.
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
03474456 by Matthew Pickering at 2023-08-23T13:43:48-04:00
ci: Build relocatable bindist on windows
We now build the relocatable bindist target on windows, which means we
test and distribute the new method of creating a relocatable bindist.
- - - - -
d0b48113 by Matthew Pickering at 2023-08-23T13:43:48-04:00
hadrian: Add error when trying to build binary-dist target on windows
The binary dist produced by `binary-dist` target doesn't work on windows
because of the wrapper script the makefile installs. In order to not
surprise any packagers we just give an error if someone tries to build
the old binary-dist target rather than the reloc-binary-dist target.
- - - - -
7cbf9361 by Matthew Pickering at 2023-08-23T13:43:48-04:00
hadrian: Remove query' logic to use tooldir
- - - - -
03fad42e by Matthew Pickering at 2023-08-23T13:43:48-04:00
configure: Set WindresCmd directly and removed unused variables
For some reason there was an indirection via the Windres variable before
setting WindresCmd. That indirection led to #23855.
I then also noticed that these other variables were just not used
anywhere when trying to work out what the correct condition was for this
bit of the configure script.
- - - - -
c82770f5 by sheaf at 2023-08-23T13:43:48-04:00
Apply shellcheck suggestion to SUBST_TOOLDIR
- - - - -
896e35e5 by sheaf at 2023-08-23T13:44:34-04:00
Compute hints from TcSolverReportMsg
This commit changes how hints are handled in conjunction with
constraint solver report messages.
Instead of storing `[GhcHint]` in the TcRnSolverReport error constructor,
we compute the hints depending on the underlying TcSolverReportMsg.
This disentangles the logic and makes it easier to add new hints for
certain errors.
- - - - -
a05cdaf0 by Alexander Esgen at 2023-08-23T13:45:16-04:00
users-guide: remove note about fatal Haddock parse failures
- - - - -
4908d798 by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Introduce Data.Enum
- - - - -
f59707c7 by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Add export list to GHC.Num.Integer
- - - - -
b1054053 by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Add export list to GHC.Num
- - - - -
6baa481d by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Add export list to GHC.Num.Natural
- - - - -
2ac15233 by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Add export list to GHC.Float
- - - - -
f3c489de by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Add export list to GHC.Real
- - - - -
94f59eaa by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Eliminate module reexport in GHC.Exception
The metric increase here isn't strictly due to this commit but it's a
rather small, incidental change.
Metric Increase:
T8095
T13386
Metric Decrease:
T8095
T13386
T18304
- - - - -
be1fc7df by Ben Gamari at 2023-08-23T17:36:41-04:00
base: Add disclaimers in internal modules
To warn users that these modules are internal and their interfaces may
change with little warning.
As proposed in Core Libraries Committee #146 [CLC146].
[CLC146]: https://github.com/haskell/core-libraries-committee/issues/146
- - - - -
0326f3f4 by sheaf at 2023-08-23T17:37:29-04:00
Bump Cabal submodule
We need to bump the Cabal submodule to include commit ec75950
which fixes an issue with a dodgy import Rep(..) which relied
on GHC bug #23570
- - - - -
0504cd08 by Facundo Domínguez at 2023-08-23T17:38:11-04:00
Fix typos in the documentation of Data.OldList.permutations
- - - - -
1420b8cb by Antoine Leblanc at 2023-08-24T16:18:17-04:00
Be more eager in TyCon boot validity checking
This commit performs boot-file consistency checking for TyCons into
checkValidTyCl. This ensures that we eagerly catch any mismatches,
which prevents the compiler from seeing these inconsistencies and
panicking as a result.
See Note [TyCon boot consistency checking] in GHC.Tc.TyCl.
Fixes #16127
- - - - -
d99c816f by Finley McIlwaine at 2023-08-24T16:18:55-04:00
Refactor estimation of stack info table provenance
This commit greatly refactors the way we compute estimated provenance for stack
info tables. Previously, this process was done using an entirely separate traversal
of the whole Cmm code stream to build the map from info tables to source locations.
The separate traversal is now fused with the Cmm code generation pipeline in
GHC.Driver.Main.
This results in very significant code generation speed ups when -finfo-table-map is
enabled. In testing, this patch reduces code generation times by almost 30% with
-finfo-table-map and -O0, and 60% with -finfo-table-map and -O1 or -O2 .
Fixes #23103
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d3e0124c by Finley McIlwaine at 2023-08-24T16:18:55-04:00
Add a test checking overhead of -finfo-table-map
We want to make sure we don't end up with poor codegen performance resulting from
-finfo-table-map again as in #23103. This test adds a performance test tracking
total allocations while compiling ExactPrint with -finfo-table-map.
- - - - -
fcfc1777 by Ben Gamari at 2023-08-25T10:58:16-04:00
llvmGen: Add export list to GHC.Llvm.MetaData
- - - - -
5880fff6 by Ben Gamari at 2023-08-25T10:58:16-04:00
llvmGen: Allow LlvmLits in MetaExprs
This omission appears to be an oversight.
- - - - -
86ce92a2 by Ben Gamari at 2023-08-25T10:58:16-04:00
compiler: Move platform feature predicates to GHC.Driver.DynFlags
These are useful in `GHC.Driver.Config.*`.
- - - - -
a6a38742 by Ben Gamari at 2023-08-25T10:58:16-04:00
llvmGen: Introduce infrastructure for module flag metadata
- - - - -
e9af2cf3 by Ben Gamari at 2023-08-25T10:58:16-04:00
llvmGen: Don't pass stack alignment via command line
As of https://reviews.llvm.org/D103048 LLVM no longer supports the
`-stack-alignment=...` flag. Instead this information is passed via a
module flag metadata node.
This requires dropping support for LLVM 11 and 12.
Fixes #23870
- - - - -
a936f244 by Alan Zimmerman at 2023-08-25T10:58:56-04:00
EPA: Keep track of "in" token for WarningTxt category
A warning can now be written with a category, e.g.
{-# WARNInG in "x-c" e "d" #-}
Keep track of the location of the 'in' keyword and string, as well as
the original SourceText of the label, in case it uses character escapes.
- - - - -
3df8a653 by Matthew Pickering at 2023-08-25T17:42:18-04:00
Remove redundant import in InfoTableProv
The copyBytes function is provided by the import of Foreign.
Fixes #23889
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d6f807ec by Ben Gamari at 2023-08-25T17:42:54-04:00
gitlab/issue-template: Mention report-a-bug
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50b9f75d by Artin Ghasivand at 2023-08-26T20:02:50+03:30
Added StandaloneKindSignature examples to replace CUSKs ones
- - - - -
2f6309a4 by Vladislav Zavialov at 2023-08-27T03:47:37-04:00
Remove outdated CPP in compiler/* and template-haskell/*
The boot compiler was bumped to 9.4 in cebb5819b43.
There is no point supporting older GHC versions with CPP.
- - - - -
5248fdf7 by Zubin Duggal at 2023-08-28T15:01:09+05:30
testsuite: Add regression test for #23861
Simon says this was fixed by
commit 8d68685468d0b6e922332a3ee8c7541efbe46137
Author: sheaf <sam.derbyshire(a)gmail.com>
Date: Fri Aug 4 15:28:45 2023 +0200
Remove zonk in tcVTA
- - - - -
b6903f4d by Zubin Duggal at 2023-08-28T12:33:58-04:00
testsuite: Add regression test for #23864
Simon says this was fixed by
commit 59202c800f2c97c16906120ab2561f6e1556e4af
Author: Sebastian Graf <sebastian.graf(a)kit.edu>
Date: Fri Mar 31 17:35:22 2023 +0200
CorePrep: Eliminate EmptyCase and unsafeEqualityProof in CoreToStg instead
We eliminate EmptyCase by way of `coreToStg (Case e _ _ []) = coreToStg e` now.
The main reason is that it plays far better in conjunction with eta expansion
(as we aim to do for arguments in CorePrep, #23083), because we can discard
any arguments, `(case e of {}) eta == case e of {}`, whereas in `(e |> co) eta`
it's impossible to discard the argument.
- - - - -
9eecdf33 by sheaf at 2023-08-28T18:54:06+00:00
Remove ScopedTypeVariables => TypeAbstractions
This commit implements [amendment 604](https://github.com/ghc-proposals/ghc-proposals/pull/604/)
to [GHC proposal 448](https://github.com/ghc-proposals/ghc-proposals/pull/448)
by removing the implication of language extensions
ScopedTypeVariables => TypeAbstractions
To limit breakage, we now allow type arguments in constructor patterns
when both ScopedTypeVariables and TypeApplications are enabled, but
we emit a warning notifying the user that this is deprecated behaviour
that will go away starting in GHC 9.12.
Fixes #23776
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fadd5b4d by sheaf at 2023-08-28T18:54:06+00:00
.stderr: ScopedTypeVariables =/> TypeAbstractions
This commit accepts testsuite changes for the changes in the previous
commit, which mean that TypeAbstractions is no longer implied by
ScopedTypeVariables.
- - - - -
4f5fb500 by Greg Steuck at 2023-08-29T07:55:13-04:00
Repair `codes` test on OpenBSD by explicitly requesting extended RE
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6bbde581 by Vasily Sterekhov at 2023-08-29T12:06:58-04:00
Add test for #23540
`T23540.hs` makes use of `explainEv` from `HieQueries.hs`, so
`explainEv` has been moved to `TestUtils.hs`.
- - - - -
257bb3bd by Vasily Sterekhov at 2023-08-29T12:06:58-04:00
Add test for #23120
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4f192947 by Vasily Sterekhov at 2023-08-29T12:06:58-04:00
Make some evidence uses reachable by toHie
Resolves #23540, #23120
This adds spans to certain expressions in the typechecker and renamer,
and lets 'toHie' make use of those spans. Therefore the relevant
evidence uses for the following syntax will now show up under the
expected nodes in 'HieAst's:
- Overloaded literals ('IsString', 'Num', 'Fractional')
- Natural patterns and N+k patterns ('Eq', 'Ord', and instances from the
overloaded literals being matched on)
- Arithmetic sequences ('Enum')
- Monadic bind statements ('Monad')
- Monadic body statements ('Monad', 'Alternative')
- ApplicativeDo ('Applicative', 'Functor')
- Overloaded lists ('IsList')
Also see Note [Source locations for implicit function calls]
In the process of handling overloaded lists I added an extra 'SrcSpan'
field to 'VAExpansion' - this allows us to more accurately reconstruct
the locations from the renamer in 'rebuildHsApps'. This also happens to
fix #23120.
See the additions to Note [Looking through HsExpanded]
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fe9fcf9d by Sylvain Henry at 2023-08-29T12:07:50-04:00
ghc-heap: rename C file (fix #23898)
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b60d6576 by Krzysztof Gogolewski at 2023-08-29T12:08:29-04:00
Misc cleanup
- Builtin.PrimOps: ReturnsAlg was used only for unboxed tuples.
Rename to ReturnsTuple.
- Builtin.Utils: use SDoc for a panic message.
The comment about <<details unavailable>> was obsoleted by e8d356773b56.
- TagCheck: fix wrong logic. It was zipping a list 'args' with its
version 'args_cmm' after filtering.
- Core.Type: remove an outdated 1999 comment about unlifted polymorphic types
- hadrian: remove leftover debugging print
- - - - -
3054fd6d by Krzysztof Gogolewski at 2023-08-29T12:09:08-04:00
Add a regression test for #23903
The bug has been fixed by commit bad2f8b8aa8424.
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21584b12 by Ben Gamari at 2023-08-29T19:52:02-04:00
README: Refer to ghc-hq repository for contributor and governance information
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e542d590 by sheaf at 2023-08-29T19:52:40-04:00
Export setInertSet from GHC.Tc.Solver.Monad
We used to export getTcSInerts and setTcSInerts from GHC.Tc.Solver.Monad.
These got renamed to getInertSet/setInertSet in e1590ddc. That commit also removed
the export of setInertSet, but that function is useful for the GHC API.
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694ec5b1 by sheaf at 2023-08-30T10:18:32-04:00
Don't bundle children for non-parent Avails
We used to bundle all children of the parent Avail with things that
aren't the parent, e.g. with
class C a where
type T a
meth :: ..
we would bundle the whole Avail (C, T, meth) with all of C, T and meth,
instead of only with C.
Avoiding this fixes #23570
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d926380d by Krzysztof Gogolewski at 2023-08-30T10:19:08-04:00
Fix typos
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d07080d2 by Josh Meredith at 2023-08-30T19:42:32-04:00
JS: Implement missing C functions `rename`, `realpath`, and `getcwd` (#23806)
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e2940272 by David Binder at 2023-08-30T19:43:08-04:00
Bump submodules of hpc and hpc-bin to version 0.7.0.0
hpc 0.7.0.0 dropped SafeHaskell safety guarantees in order to simplify
compatibility with newer versions of the directory package which
dropped all SafeHaskell guarantees.
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5d56d05c by David Binder at 2023-08-30T19:43:08-04:00
Bump hpc bound in ghc.cabal.in
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99fff496 by Dominik Schrempf at 2023-08-31T00:04:46-04:00
ghc classes documentation: rm redundant comment
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fe021bab by Dominik Schrempf at 2023-08-31T00:04:46-04:00
prelude documentation: various nits
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48c84547 by Dominik Schrempf at 2023-08-31T00:04:46-04:00
integer documentation: minor corrections
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20cd12f4 by Dominik Schrempf at 2023-08-31T00:04:46-04:00
real documentation: nits
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dd39bdc0 by sheaf at 2023-08-31T00:05:27-04:00
Add a test for #21765
This issue (of reporting a constraint as being redundant even though
removing it causes typechecking to fail) was fixed in aed1974e.
This commit simply adds a regression test.
Fixes #21765
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f1ec3628 by Andrew Lelechenko at 2023-08-31T23:53:30-04:00
Export foldl' from Prelude and bump submodules
See https://github.com/haskell/core-libraries-committee/issues/167 for discussion
Metric Decrease:
T8095
T13386
Metric Increase:
T13386
T8095
T8095 ghc/alloc decreased on x86_64, but increased on aarch64.
T13386 ghc/alloc decreased on x86_64-windows, but increased on other platforms.
Neither has anything to do with `foldl'`, so I conclude that both are flaky.
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3181b97d by Gergő Érdi at 2023-08-31T23:54:06-04:00
Allow cross-tyvar defaulting proposals from plugins
Fixes #23832.
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e4af506e by Sebastian Graf at 2023-09-01T14:29:12-04:00
Clarify Note [GlobalId/LocalId] after CorePrep (#23797)
Fixes #23797.
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ac29787c by Sylvain Henry at 2023-09-01T14:30:02-04:00
Fix warning with UNPACK on sum type (#23921)
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9765ac7b by Zubin Duggal at 2023-09-05T00:37:45-04:00
hadrian: track python dependencies in doc rules
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1578215f by sheaf at 2023-09-05T00:38:26-04:00
Bump Haddock to fix #23616
This commit updates the Haddock submodule to include
the fix to #23616.
Fixes #23616
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5a2fe35a by David Binder at 2023-09-05T00:39:07-04:00
Fix example in GHC user guide in SafeHaskell section
The example given in the SafeHaskell section uses an implementation of
Monad which no longer works. This MR removes the non-canonical return
instance and adds the necessary instances of Functor and Applicative.
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291d81ae by Matthew Pickering at 2023-09-05T14:03:10-04:00
driver: Check transitive closure of haskell package dependencies when deciding whether to relink
We were previously just checking whether direct package dependencies had
been modified. This caused issues when compiling without optimisations
as we wouldn't relink the direct dependency if one of its dependenices
changed.
Fixes #23724
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35da0775 by Krzysztof Gogolewski at 2023-09-05T14:03:47-04:00
Re-export GHC.Utils.Panic.Plain from GHC.Utils.Panic
Fixes #23930
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3930d793 by Jaro Reinders at 2023-09-06T18:42:55-04:00
Make STG rewriter produce updatable closures
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0104221a by Krzysztof Gogolewski at 2023-09-06T18:43:32-04:00
configure: update message to use hadrian (#22616)
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b34f8586 by Alan Zimmerman at 2023-09-07T10:58:38-04:00
EPA: Incorrect locations for UserTyVar with '@'
In T13343.hs, the location for the @ is not within the span of the
surrounding UserTyVar.
type Bad @v = (forall (v1 :: RuntimeRep) (a1 :: TYPE v). a1) :: TYPE v
Widen it so it is captured.
Closes #23887
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8046f020 by Finley McIlwaine at 2023-09-07T10:59:15-04:00
Bump haddock submodule to fix #23920
Removes the fake export of `FUN` from Prelude. Fixes #23920.
Bumps haddock submodule.
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e0aa8c6e by Krzysztof Gogolewski at 2023-09-07T11:00:03-04:00
Fix wrong role in mkSelCo_maybe
In the Lint failure in #23938, we start with a coercion Refl :: T a ~R T a,
and call mkSelCo (SelTyCon 1 nominal) Refl.
The function incorrectly returned Refl :: a ~R a. The returned role
should be nominal, according to the SelCo rule:
co : (T s1..sn) ~r0 (T t1..tn)
r = tyConRole tc r0 i
----------------------------------
SelCo (SelTyCon i r) : si ~r ti
In this test case, r is nominal while r0 is representational.
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1d92f2df by Gergő Érdi at 2023-09-08T04:04:30-04:00
If we have multiple defaulting plugins, then we should zonk in between them
after any defaulting has taken place, to avoid a defaulting plugin seeing
a metavariable that has already been filled.
Fixes #23821.
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eaee4d29 by Gergő Érdi at 2023-09-08T04:04:30-04:00
Improvements to the documentation of defaulting plugins
Based on @simonpj's draft and comments in !11117
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ede3df27 by Alan Zimmerman at 2023-09-08T04:05:06-04:00
EPA: Incorrect span for LWarnDec GhcPs
The code (from T23465.hs)
{-# WARNInG in "x-c" e "d" #-}
e = e
gives an incorrect span for the LWarnDecl GhcPs
Closes #23892
It also fixes the Test23465/Test23464 mixup
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a0ccef7a by Krzysztof Gogolewski at 2023-09-08T04:05:42-04:00
Valid hole fits: don't suggest unsafeCoerce (#17940)
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88b942c4 by Oleg Grenrus at 2023-09-08T19:58:42-04:00
Add warning for badly staged types.
Resolves #23829.
The stage violation results in out-of-bound names in splices.
Technically this is an error, but someone might rely on this!?
Internal changes:
- we now track stages for TyVars.
- thLevel (RunSplice _) = 0, instead of panic, as reifyInstances does
in fact rename its argument type, and it can contain variables.
- - - - -
9861f787 by Ben Gamari at 2023-09-08T19:59:19-04:00
rts: Fix invalid symbol type
I suspect this code is dead since we haven't observed this failing
despite the obviously incorrect macro name.
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03ed6a9a by Ben Gamari at 2023-09-08T19:59:19-04:00
testsuite: Add simple test exercising C11 atomics in GHCi
See #22012.
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1aa5733a by Ben Gamari at 2023-09-08T19:59:19-04:00
rts/RtsSymbols: Add AArch64 outline atomic operations
Fixes #22012 by adding the symbols described in
https://github.com/llvm/llvm-project/blob/main/llvm/docs/Atomics.rst#libcal….
Ultimately this would be better addressed by #22011, but this is a first
step in the right direction and fixes the immediate symptom.
Note that we dropped the `__arch64_cas16` operations as these provided
by all platforms's compilers. Also, we don't link directly against the
libgcc/compiler-rt definitions but rather provide our own wrappers to
work around broken toolchains (e.g. https://bugs.gentoo.org/868018)
Generated via https://gitlab.haskell.org/ghc/ghc/-/snippets/5733.
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8f7d3041 by Matthew Pickering at 2023-09-08T19:59:55-04:00
ci: Build debian12 and fedora38 bindists
This adds builds for the latest releases for fedora and debian
We build these bindists in nightly and release pipelines.
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a1f0d55c by Felix Leitz at 2023-09-08T20:00:37-04:00
Fix documentation around extension implication for MultiParamTypeClasses/ConstrainedClassMethods.
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98166389 by Teo Camarasu at 2023-09-12T04:30:54-04:00
docs: move -xn flag beside --nonmoving-gc
It makes sense to have these beside each other as they are aliases.
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f367835c by Teo Camarasu at 2023-09-12T04:30:55-04:00
nonmoving: introduce a family of dense allocators
Supplement the existing power 2 sized nonmoving allocators with a family
of dense allocators up to a configurable threshold.
This should reduce waste from rounding up block sizes while keeping the
amount of allocator sizes manageable.
This patch:
- Adds a new configuration option `--nonmoving-dense-allocator-count`
to control the amount of these new dense allocators.
- Adds some constants to `NonmovingAllocator` in order to keep
marking fast with the new allocators.
Resolves #23340
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2b07bf2e by Teo Camarasu at 2023-09-12T04:30:55-04:00
Add changelog entry for #23340
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f96fe681 by sheaf at 2023-09-12T04:31:44-04:00
Use printGhciException in run{Stmt, Decls}
When evaluating statements in GHCi, we need to use printGhciException
instead of the printException function that GHC provides in order to
get the appropriate error messages that are customised for ghci use.
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d09b932b by psilospore at 2023-09-12T04:31:44-04:00
T23686: Suggest how to enable Language Extension when in ghci
Fixes #23686
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da30f0be by Matthew Craven at 2023-09-12T04:32:24-04:00
Unarise: Split Rubbish literals in function args
Fixes #23914. Also adds a check to STG lint that
these args are properly unary or nullary after unarisation
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261b6747 by Matthew Pickering at 2023-09-12T04:33:04-04:00
darwin: Bump MAXOSX_DEPLOYMENT_TARGET to 10.13
This bumps the minumum supported version to 10.13 (High Sierra) which is
6 years old at this point.
Fixes #22938
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f418f919 by Mario Blažević at 2023-09-12T04:33:45-04:00
Fix TH pretty-printing of nested GADTs, issue #23937
This commit fixes `Language.Haskell.TH.Ppr.pprint` so that it correctly
pretty-prints GADTs declarations contained within data family instances.
Fixes #23937
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d7a64753 by John Ericson at 2023-09-12T04:34:20-04:00
Put hadrian non-bootstrap plans through `jq`
This makes it possible to review changes with conventional diffing
tools.
This is picking up where ad8cfed4195b1bbfc15b841f010e75e71f63157d left
off.
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ff0a709a by Sylvain Henry at 2023-09-12T08:46:28-04:00
JS: fix some tests
- Tests using Setup programs need to pass --with-hc-pkg
- Several other fixes
See https://gitlab.haskell.org/ghc/ghc/-/wikis/javascript-backend/bug_triage
for the current status
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fc86f0e7 by Krzysztof Gogolewski at 2023-09-12T08:47:04-04:00
Fix in-scope set assertion failure (#23918)
Patch by Simon
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21a906c2 by Matthew Pickering at 2023-09-12T17:21:04+02:00
Add -Winconsistent-flags warning
The warning fires when inconsistent command line flags are passed.
For example:
* -dynamic-too and -dynamic
* -dynamic-too on windows
* -O and --interactive
* etc
This is on by default and allows users to control whether the warning is
displayed and whether it should be an error or not.
Fixes #22572
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dfc4f426 by Krzysztof Gogolewski at 2023-09-12T20:31:35-04:00
Avoid serializing BCOs with the internal interpreter
Refs #23919
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9217950b by Finley McIlwaine at 2023-09-13T08:06:03-04:00
Fix numa auto configure
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98e7c1cf by Simon Peyton Jones at 2023-09-13T08:06:40-04:00
Add -fno-cse to T15426 and T18964
This -fno-cse change is to avoid these performance tests depending on
flukey CSE stuff. Each contains several independent tests, and we don't
want them to interact.
See #23925.
By killing CSE we expect a 400% increase in T15426, and 100% in T18964.
Metric Increase:
T15426
T18964
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236a134e by Simon Peyton Jones at 2023-09-13T08:06:40-04:00
Tiny refactor
canEtaReduceToArity was only called internally, and always with
two arguments equal to zero. This patch just specialises the
function, and renames it to cantEtaReduceFun.
No change in behaviour.
- - - - -
56b403c9 by Ben Gamari at 2023-09-13T19:21:36-04:00
spec-constr: Lift argument limit for SPEC-marked functions
When the user adds a SPEC argument to a function, they are informing us
that they expect the function to be specialised. However, previously
this instruction could be preempted by the specialised-argument limit
(sc_max_args). Fix this.
This fixes #14003.
- - - - -
6840012e by Simon Peyton Jones at 2023-09-13T19:22:13-04:00
Fix eta reduction
Issue #23922 showed that GHC was bogusly eta-reducing a join point.
We should never eta-reduce (\x -> j x) to j, if j is a join point.
It is extremly difficult to trigger this bug. It took me 45 mins of
trying to make a small tests case, here immortalised as T23922a.
- - - - -
e5c00092 by Andreas Klebinger at 2023-09-14T08:57:43-04:00
Profiling: Properly escape characters when using `-pj`.
There are some ways in which unusual characters like quotes or others
can make it into cost centre names. So properly escape these.
Fixes #23924
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ec490578 by Ellie Hermaszewska at 2023-09-14T08:58:24-04:00
Use clearer example variable names for bool eliminator
- - - - -
5126a2fe by Sylvain Henry at 2023-09-15T11:18:02-04:00
Add missing int64/word64-to-double/float rules (#23907)
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/203
- - - - -
566ef411 by Mario Blažević at 2023-09-15T11:18:43-04:00
Fix and test TH pretty-printing of type operator role declarations
This commit fixes and tests `Language.Haskell.TH.Ppr.pprint` so that it
correctly pretty-prints `type role` declarations for operator names.
Fixes #23954
- - - - -
8e05c54a by Simon Peyton Jones at 2023-09-16T01:42:33-04:00
Use correct FunTyFlag in adjustJoinPointType
As the Lint error in #23952 showed, the function adjustJoinPointType
was failing to adjust the FunTyFlag when adjusting the type.
I don't think this caused the seg-fault reported in the ticket,
but it is definitely. This patch fixes it.
It is tricky to come up a small test case; Krzysztof came up with
this one, but it only triggers a failure in GHC 9.6.
- - - - -
778c84b6 by Pierre Le Marre at 2023-09-16T01:43:15-04:00
Update to Unicode 15.1.0
See: https://www.unicode.org/versions/Unicode15.1.0/
- - - - -
f9d79a6c by Alan Zimmerman at 2023-09-18T00:00:14-04:00
EPA: track unicode version for unrestrictedFunTyCon
Closes #23885
Updates haddock submodule
- - - - -
9374f116 by Andrew Lelechenko at 2023-09-18T00:00:54-04:00
Bump parsec submodule to allow text-2.1 and bytestring-0.12
- - - - -
7ca0240e by Ben Gamari at 2023-09-18T15:16:48-04:00
base: Advertise linear time of readFloat
As noted in #23538, `readFloat` has runtime that scales nonlinearly in
the size of its input. Consequently, its use on untrusted input can
be exploited as a denial-of-service vector. Point this out and suggest
use of `read` instead.
See #23538.
- - - - -
f3f58f13 by Simon Peyton Jones at 2023-09-18T15:17:24-04:00
Remove dead code GHC.CoreToStg.Prep.canFloat
This function never fires, so we can delete it: #23965.
- - - - -
ccab5b15 by Ben Gamari at 2023-09-18T15:18:02-04:00
base/changelog: Move fix for #23907 to 9.8.1 section
Since the fix was backported to 9.8.1
- - - - -
51b57d65 by Matthew Pickering at 2023-09-19T08:44:31-04:00
Add aarch64 alpine bindist
This is dynamically linked and makes creating statically linked
executables more straightforward.
Fixes #23482
- - - - -
02c87213 by Matthew Pickering at 2023-09-19T08:44:31-04:00
Add aarch64-deb11 bindist
This adds a debian 11 release job for aarch64.
Fixes #22005
- - - - -
8b61dfd6 by Alexis King at 2023-09-19T08:45:13-04:00
Don’t store the async exception masking state in CATCH frames
- - - - -
86d2971e by doyougnu at 2023-09-19T19:08:19-04:00
compiler,ghci: error codes link to HF error index
closes: #23259
- adds -fprint-error-index-links={auto|always|never} flag
- - - - -
5f826c18 by sheaf at 2023-09-19T19:09:03-04:00
Pass quantified tyvars in tcDefaultAssocDecl
This commit passes the correct set of quantified type variables written
by the user in associated type default declarations for validity
checking. This ensures that validity checking of associated type defaults
mirrors that of standalone type family instances.
Fixes #23768 (see testcase T23734 in subsequent commit)
- - - - -
aba18424 by sheaf at 2023-09-19T19:09:03-04:00
Avoid panic in mkGADTVars
This commit avoids panicking in mkGADTVars when we encounter
a type variable as in #23784 that is bound by a user-written
forall but not actually used.
Fixes #23784
- - - - -
a525a92a by sheaf at 2023-09-19T19:09:03-04:00
Adjust reporting of unused tyvars in data FamInsts
This commit adjusts the validity checking of data family
instances to improve the reporting of unused type variables.
See Note [Out of scope tvs in data family instances] in GHC.Tc.Validity.
The problem was that, in a situation such as
data family D :: Type
data instance forall (d :: Type). D = MkD
the RHS passed to 'checkFamPatBinders' would be the TyCon app
R:D d
which mentions the type variable 'd' quantified in the user-written
forall. Thus, when computing the set of unused type variables in
the RHS of the data family instance, we would find that 'd' is used,
and report a strange error message that would say that 'd' is not
bound on the LHS.
To fix this, we special-case the data-family instance case,
manually extracting all the type variables that appear in the
arguments of all the data constructores of the data family instance.
Fixes #23778
- - - - -
28dd52ee by sheaf at 2023-09-19T19:09:03-04:00
Unused tyvars in FamInst: only report user tyvars
This commit changes how we perform some validity checking for
coercion axioms to mirror how we handle default declarations for
associated type families. This allows us to keep track of whether
type variables in type and data family instances were user-written
or not, in order to only report the user-written ones in
"unused type variable" error messages.
Consider for example:
{-# LANGUAGE PolyKinds #-}
type family F
type instance forall a. F = ()
In this case, we get two quantified type variables,
(k :: Type) and (a :: k); the second being user-written, but the first
is introduced by the typechecker. We should only report 'a' as being
unused, as the user has no idea what 'k' is.
Fixes #23734
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1eed645c by sheaf at 2023-09-19T19:09:03-04:00
Validity: refactor treatment of data families
This commit refactors the reporting of unused type variables in type
and data family instances to be more principled. This avoids ad-hoc
logic in the treatment of data family instances.
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35bc506b by John Ericson at 2023-09-19T19:09:40-04:00
Remove `ghc-cabal`
It is dead code since the Make build system was removed.
I tried to go over every match of `git grep -i ghc-cabal` to find other
stray bits. Some of those might be workarounds that can be further
removed.
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665ca116 by John Paul Adrian Glaubitz at 2023-09-19T19:10:39-04:00
Re-add unregisterised build support for sparc and sparc64
Closes #23959
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142f8740 by Matthew Pickering at 2023-09-19T19:11:16-04:00
Bump ci-images to use updated version of Alex
Fixes #23977
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fa977034 by John Ericson at 2023-09-21T12:55:25-04:00
Use Cabal 3.10 for Hadrian
We need the newer version for `CABAL_FLAG_*` env vars for #17191.
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a5d22cab by John Ericson at 2023-09-21T12:55:25-04:00
hadrian: `need` any `configure` script we will call
When the script is changed, we should reconfigure.
- - - - -
db882b57 by John Ericson at 2023-09-21T12:55:25-04:00
hadrian: Make it easier to debug Cabal configure
Right now, output is squashed. This make per-package configure scripts
extremely hard to maintain, because we get vague "library is missing"
errors when the actually probably is usually completely unrelated except
for also involving the C/C++ toolchain.
(I can always pass `-VVV` to Hadrian locally, but these errors are
subtle and I often cannot reproduce them locally!)
`--disable-option-checking` was added back in
75c6e0684dda585c37b4ac254cd7a13537a59a91 but seems to be a bit overkill;
if other flags are passed that are not recognized behind the two from
Cabal mentioned in the former comment, we *do* want to know about it.
- - - - -
7ed65f5a by John Ericson at 2023-09-21T12:55:25-04:00
hadrian: Increase verbosity of certain cabal commands
This is a hack to get around the cabal function we're calling
*decreasing* the verbosity it passes to another function, which is the
stuff we often actually care about. Sigh.
Keeping this a separate commit so if this makes things too verbose it is
easy to revert.
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a4fde569 by John Ericson at 2023-09-21T12:55:25-04:00
rts: Move most external symbols logic to the configure script
This is much more terse because we are programmatically handling the
leading underscore.
`findPtr` however is still handled in the Cabal file because we need a
newer Cabal to pass flags to the configure script automatically.
Co-Authored-By: Ben Gamari <ben(a)well-typed.com>
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56cc85fb by Andrew Lelechenko at 2023-09-21T12:56:21-04:00
Bump Cabal submodule to allow text-2.1 and bytestring-0.12
- - - - -
0cd6148c by Matthew Pickering at 2023-09-21T12:56:21-04:00
hadrian: Generate Distribution/Fields/Lexer.x before creating a source-dist
- - - - -
b10ba6a3 by Andrew Lelechenko at 2023-09-21T12:56:21-04:00
Bump hadrian's index-state to upgrade alex at least to 3.2.7.3
- - - - -
11ecc37b by Luite Stegeman at 2023-09-21T12:57:03-04:00
JS: correct file size and times
Programs produced by the JavaScript backend were returning
incorrect file sizes and modification times, causing cabal
related tests to fail.
This fixes the problem and adds an additional test that verifies
basic file information operations.
fixes #23980
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b35fd2cd by Ben Gamari at 2023-09-21T12:57:39-04:00
gitlab-ci: Drop libiserv from upload_ghc_libs
libiserv has been merged into the ghci package.
- - - - -
37ad04e8 by Ben Gamari at 2023-09-21T12:58:15-04:00
testsuite: Fix Windows line endings
- - - - -
5795b365 by Ben Gamari at 2023-09-21T12:58:15-04:00
testsuite: Use makefile_test
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15118740 by Ben Gamari at 2023-09-21T12:58:55-04:00
system-cxx-std-lib: Add license and description
- - - - -
0208f1d5 by Ben Gamari at 2023-09-21T12:59:33-04:00
gitlab/issue-templates: Rename bug.md -> default.md
So that it is visible by default.
- - - - -
23cc3f21 by Andrew Lelechenko at 2023-09-21T20:18:11+01:00
Bump submodule text to 2.1
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b8e4fe23 by Andrew Lelechenko at 2023-09-22T20:05:05-04:00
Bump submodule unix to 2.8.2.1
- - - - -
54b2016e by John Ericson at 2023-09-23T11:40:41-04:00
Move lib{numa,dw} defines to RTS configure
Clean up the m4 to handle the auto case always and be more consistent.
Also simplify the CPP --- we should always have both headers if we are
using libnuma.
"side effects" (AC_DEFINE, and AC_SUBST) are removed from the macros to
better separate searching from actions taken based on search results.
This might seem overkill now, but will make shuffling logic between
configure scripts easier later.
The macro comments are converted from `dnl` to `#` following the
recomendation in
https://www.gnu.org/software/autoconf/manual/autoconf-2.71/html_node/Macro-…
- - - - -
d51b601b by John Ericson at 2023-09-23T11:40:50-04:00
Shuffle libzstd configuring between scripts
Like the prior commit for libdw and libnuma, `AC_DEFINE` to RTS
configure, `AC_SUBST` goes to the top-level configure script, and the
documentation of the m4 macro is improved.
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d1425af0 by John Ericson at 2023-09-23T11:41:03-04:00
Move `FP_ARM_OUTLINE_ATOMICS` to RTS configure
It is just `AC_DEFINE` it belongs there instead.
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18de37e4 by John Ericson at 2023-09-23T11:41:03-04:00
Move mmap in the runtime linker check to the RTS configure
`AC_DEFINE` should go there instead.
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74132c2b by Andrew Lelechenko at 2023-09-25T21:56:54-04:00
Elaborate comment on GHC_NO_UNICODE
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de142aa2 by Ben Gamari at 2023-09-26T15:25:03-04:00
gitlab-ci: Mark T22012 as broken on CentOS 7
Due to #23979.
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6a896ce8 by Teo Camarasu at 2023-09-26T15:25:39-04:00
hadrian: better error for failing to find file's dependencies
Resolves #24004
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d697a6c2 by Stefan Holdermans at 2023-09-26T20:58:37+00:00
Refactor uses of `partitionEithers . map`
This patch changes occurences of the idiom
`partitionEithers (map f xs)` by the simpler form
`partitionWith f xs` where `partitionWith` is the utility function
defined in `GHC.Utils.Misc`.
Resolves: #23953
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8a2968b7 by Stefan Holdermans at 2023-09-26T20:58:37+00:00
Refactor uses of `partitionEithers <$> mapM f xs`
This patch changes occurences of the idiom
`partitionEithers <$> mapM f xs` by the simpler form
`partitionWithM f xs` where `partitionWithM` is a utility function
newly added to `GHC.Utils.Misc`.
- - - - -
6a27eb97 by Stefan Holdermans at 2023-09-26T20:58:37+00:00
Mark `GHC.Utils.Misc.partitionWithM` as inlineable
This patch adds an `INLINEABLE` pragma for `partitionWithM` to ensure
that the right-hand side of the definition of this function remains
available for specialisation at call sites.
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f1e5245a by David Binder at 2023-09-27T01:19:00-04:00
Add RTS option to supress tix file
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1f43124f by David Binder at 2023-09-27T01:19:00-04:00
Add expected output to testsuite in test interface-stability/base-exports
- - - - -
b9d2c354 by David Binder at 2023-09-27T01:19:00-04:00
Expose HpcFlags and getHpcFlags from GHC.RTS.Flags
- - - - -
345675c6 by David Binder at 2023-09-27T01:19:00-04:00
Fix expected output of interface-stability test
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146e1c39 by David Binder at 2023-09-27T01:19:00-04:00
Implement getHpcFlags
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61ba8e20 by David Binder at 2023-09-27T01:19:00-04:00
Add section in user guide
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ea05f890 by David Binder at 2023-09-27T01:19:01-04:00
Rename --emit-tix-file to --write-tix-file
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cabce2ce by David Binder at 2023-09-27T01:19:01-04:00
Update the golden files for interface stability
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1dbdb9d0 by Krzysztof Gogolewski at 2023-09-27T01:19:37-04:00
Refactor: introduce stgArgRep
The function 'stgArgType' returns the type in STG. But this violates
the abstraction: in STG we're supposed to operate on PrimReps.
This introduces
stgArgRep ty = typePrimRep (stgArgType ty)
stgArgRep1 ty = typePrimRep1 (stgArgType ty)
stgArgRep_maybe ty = typePrimRep_maybe (stgArgType ty)
stgArgType is still directly used for unboxed tuples (should be fixable), FFI
and in ticky.
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b02f8042 by Mario Blažević at 2023-09-27T17:33:28-04:00
Fix TH pretty-printer's parenthesization
This PR Fixes `Language.Haskell.TH.Ppr.pprint` so it correctly emits parentheses where needed.
Fixes #23962, #23968, #23971, and #23986
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79104334 by Krzysztof Gogolewski at 2023-09-27T17:34:04-04:00
Add a testcase for #17564
The code in the ticket relied on the behaviour of Derived constraints.
Derived constraints were removed in GHC 9.4 and now the code works
as expected.
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d7a80143 by sheaf at 2023-09-28T03:25:53-04:00
lint-codes: add new modes of operation
This commit adds two new modes of operation to the lint-codes
utility:
list - list all statically used diagnostic codes
outdated - list all outdated diagnostic codes
The previous behaviour is now:
test - test consistency and coverage of diagnostic codes
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477d223c by sheaf at 2023-09-28T03:25:53-04:00
lint codes: avoid using git-grep
We manually traverse through the filesystem to find the diagnostic codes
embedded in .stdout and .stderr files, to avoid any issues with old
versions of grep.
Fixes #23843
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a38ae69a by sheaf at 2023-09-28T03:25:53-04:00
lint-codes: add Hadrian targets
This commit adds new Hadrian targets:
codes, codes:used - list all used diagnostic codes
codes:outdated - list outdated diagnostic codes
This allows users to easily query GHC for used and outdated
diagnostic codes, e.g.
hadrian/build -j --flavour=<..> codes
will list all used diagnostic codes in the command line by running
the lint-codes utility in the "list codes" mode of operation.
The diagnostic code consistency and coverage test is still run as usual,
through the testsuite:
hadrian/build test --only="codes"
- - - - -
9cdd629b by Ben Gamari at 2023-09-28T03:26:29-04:00
hadrian: Install LICENSE files in bindists
Fixes #23548.
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b8ebf876 by Matthew Craven at 2023-09-28T03:27:05-04:00
Fix visibility when eta-reducing a type lambda
Fixes #24014.
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d3874407 by Torsten Schmits at 2023-09-30T16:08:10-04:00
Fix several mistakes around free variables in iface breakpoints
Fixes #23612 , #23607, #23998 and #23666.
MR: !11026
The fingerprinting logic in `Iface.Recomp` failed lookups when processing decls containing breakpoints for two reasons:
* IfaceBreakpoint created binders for free variables instead of expressions
* When collecting free names for the dependency analysis for fingerprinting, breakpoint FVs were skipped
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ef5342cd by Simon Peyton Jones at 2023-09-30T16:08:48-04:00
Refactor to combine HsLam and HsLamCase
This MR is pure refactoring (#23916):
* Combine `HsLam` and `HsLamCase`
* Combine `HsCmdLam` and `HsCmdLamCase`
This just arranges to treat uniformly
\x -> e
\case pi -> ei
\cases pis -> ie
In the exising code base the first is treated differently
to the latter two.
No change in behaviour.
More specifics:
* Combine `HsLam` and `HsLamCase` (constructors of `Language.Haskell.Syntax.Expr.HsExpr`) into one data construtor covering
* Lambda
* `\case`
* `\cases`
* The new `HsLam` has an argument of type `HsLamVariant` to distinguish the three cases.
* Similarly, combine `HsCmdLam` and `HsCmdLamCase` (constructors of `Language.Haskell.Syntax.Expr.HsCmd` ) into one.
* Similarly, combine `mkHsLamPV` and `mkHsLamCasePV` (methods of class `DisambECP`) into one. (Thank you Alan Zimmerman.)
* Similarly, combine `LambdaExpr` and `LamCaseAlt` (constructors of `Language.Haskell.Syntax.Expr.HsMatchContext`) into one: `LamAlt` with a `HsLamVariant` argument.
* Similarly, combine `KappaExpr` and `ArrowLamCaseAlt` (constructors of `Language.Haskell.Syntax.Expr.HsArrowMatchContext`) into one: `ArrowLamAlt` with a `HsLamVariant` argument.
* Similarly, combine `PsErrLambdaInPat` and `PsErrLambdaCaseInPat` (constructors of `GHC.Parser.Errors.Ppr.PsError`) into one.
* Similarly, combine `PsErrLambdaInPat` and `PsErrLambdaCaseInPat` (constructors of `GHC.Parser.Errors.Ppr.PsError`) into one.
* In the same `PsError` data type, combine `PsErrLambdaCmdInFunAppCmd` and `PsErrLambdaCaseCmdInFunAppCmd` into one.
* In the same `PsError` data tpye, combine `PsErrLambdaInFunAppExpr` and `PsErrLambdaCaseInFunAppExpr` into one.
p* Smilarly combine `ExpectedFunTyLam` and `ExpectedFunTyLamCase` (constructors of `GHC.Tc.Types.Origin.ExpectedFunTyOrigin`) into one.
Phew!
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b048bea0 by Andreas Klebinger at 2023-09-30T16:09:24-04:00
Arm: Make ppr methods easier to use by not requiring NCGConfig
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2adc0508 by Andreas Klebinger at 2023-09-30T16:09:24-04:00
AArch64: Fix broken conditional jumps for offsets >= 1MB
Rewrite conditional jump instructions with offsets >= 1MB to use unconditional jumps
to avoid overflowing the immediate.
Fixes #23746
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1424f790 by Alan Zimmerman at 2023-09-30T16:10:00-04:00
EPA: Replace Monoid with NoAnn
We currently use the Monoid class as a constraint on Exact Print
Annotation functions, so we can use mempty. But this leads to
requiring Semigroup instances too, which do not always make sense.
Instead, introduce a class NoAnn, with a function noAnn analogous to
mempty.
Closes #20372
Updates haddock submodule
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c1a3ecde by Ben Gamari at 2023-09-30T16:10:36-04:00
users-guide: Refactor handling of :base-ref: et al.
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bc204783 by Richard Eisenberg at 2023-10-02T14:50:52+02:00
Simplify and correct nasty case in coercion opt
This fixes #21062.
No test case, because triggering this code seems challenging.
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9c9ca67e by Andrew Lelechenko at 2023-10-04T05:42:28-04:00
Bump bytestring submodule to 0.12.0.2
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4e46dc2b by Andrew Lelechenko at 2023-10-04T05:42:28-04:00
Inline bucket_match
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f6b2751f by Ben Gamari at 2023-10-04T05:43:05-04:00
configure: Fix #21712 again
This is a bit of a shot in the dark to fix #24033, which appears to be
another instance of #21712. For some reason the ld-override logic
*still* appears to be active on Darwin targets (or at least one).
Consequently, on misconfigured systems we may choose a non-`ld64`
linker.
It's a bit unclear exactly what happened in #24033 but ultimately the
check added for #21712 was not quite right, checking for the
`ghc_host_os` (the value of which depends upon the bootstrap compiler)
instead of the target platform. Fix this.
Fixes #24033.
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2f0a101d by Krzysztof Gogolewski at 2023-10-04T05:43:42-04:00
Add a regression test for #24029
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8cee3fd7 by sheaf at 2023-10-04T05:44:22-04:00
Fix non-symbolic children lookup of fixity decl
The fix for #23664 did not correctly account for non-symbolic names
when looking up children of a given parent. This one-line fix changes
that.
Fixes #24037
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a4785b33 by Cheng Shao at 2023-10-04T05:44:59-04:00
rts: fix incorrect ticket reference
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e037f459 by Ben Gamari at 2023-10-04T05:45:35-04:00
users-guide: Fix discussion of -Wpartial-fields
* fix a few typos
* add a new example showing when the warning fires
* clarify the existing example
* point out -Wincomplete-record-selects
Fixes #24049.
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8ff3134e by Matthew Pickering at 2023-10-05T05:34:58-04:00
Revert "Pass preprocessor options to C compiler when building foreign C files (#16737)"
This reverts commit 1c18d3b41f897f34a93669edaebe6069f319f9e2.
`-optP` should pass options to the preprocessor, that might be a very
different program to the C compiler, so passing the options to the C
compiler is likely to result in `-optP` being useless.
Fixes #17185 and #21291
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8f6010b9 by Ben Gamari at 2023-10-05T05:35:36-04:00
rts/nonmoving: Fix on LLP64 platforms
Previously `NONMOVING_SEGMENT_MASK` and friends were defined with the `UL`
size suffix. However, this is wrong on LLP64 platforms like Windows,
where `long` is 32-bits.
Fixes #23003.
Fixes #24042.
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f20d02f8 by Andreas Klebinger at 2023-10-05T05:36:14-04:00
Fix isAArch64Bitmask for 32bit immediates.
Fixes #23802
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63afb701 by Bryan Richter at 2023-10-05T05:36:49-04:00
Work around perf note fetch failure
Addresses #24055.
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242102f4 by Krzysztof Gogolewski at 2023-10-05T05:37:26-04:00
Add a test for #21348
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7d390bce by Rewbert at 2023-10-05T05:38:08-04:00
Fixes #24046
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032ba96d by Simon Peyton Jones at 2023-10-05T13:05:26+01:00
Improve the Lint checking for empty cases
- - - - -
477c4921 by Simon Peyton Jones at 2023-10-05T13:06:54+01:00
Wibble
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06080bb0 by Simon Peyton Jones at 2023-10-05T13:06:54+01:00
Add missing import to T22439
- - - - -
4520 changed files:
- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- − .gitlab/circle-ci-job.sh
- .gitlab/darwin/nix/sources.json
- .gitlab/darwin/toolchain.nix
- + .gitlab/generate-ci/LICENSE
- + .gitlab/generate-ci/README.mkd
- + .gitlab/generate-ci/flake.lock
- + .gitlab/generate-ci/flake.nix
- .gitlab/gen_ci.hs → .gitlab/generate-ci/gen_ci.hs
- + .gitlab/generate-ci/generate-ci.cabal
- + .gitlab/generate-ci/generate-job-metadata
- + .gitlab/generate-ci/generate-jobs
- + .gitlab/generate-ci/hie.yaml
- − .gitlab/generate_jobs
- .gitlab/hello.hs
- .gitlab/issue_templates/bug.md → .gitlab/issue_templates/default.md
- .gitlab/jobs.yaml
- .gitlab/merge_request_templates/merge-request.md → .gitlab/merge_request_templates/Default.md
- − .gitlab/merge_request_templates/backport-for-8.8.md
- + .gitlab/rel_eng/default.nix
- + .gitlab/rel_eng/fetch-gitlab-artifacts/.gitignore
- + .gitlab/rel_eng/fetch-gitlab-artifacts/README.mkd
- + .gitlab/rel_eng/fetch-gitlab-artifacts/default.nix
- + .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- + .gitlab/rel_eng/fetch-gitlab-artifacts/setup.py
- + .gitlab/rel_eng/mk-ghcup-metadata/.gitignore
- + .gitlab/rel_eng/mk-ghcup-metadata/README.mkd
- + .gitlab/rel_eng/mk-ghcup-metadata/default.nix
- + .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- + .gitlab/rel_eng/mk-ghcup-metadata/setup.py
- + .gitlab/rel_eng/nix/sources.json
- + .gitlab/rel_eng/nix/sources.nix
- + .gitlab/rel_eng/upload.sh
- .gitlab/upload_ghc_libs.py → .gitlab/rel_eng/upload_ghc_libs.py
- .gitlab/test-metrics.sh
- .gitmodules
- CODEOWNERS
- HACKING.md
- INSTALL.md
- README.md
- boot
- cabal.project-reinstall
- compile_flags.txt
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- + compiler/GHC/Builtin/PrimOps/Casts.hs
- compiler/GHC/Builtin/PrimOps/Ids.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types.hs-boot
- compiler/GHC/Builtin/Types/Literals.hs
- compiler/GHC/Builtin/Types/Prim.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/Uniques.hs-boot
- compiler/GHC/Builtin/Utils.hs
- − compiler/GHC/Builtin/bytearray-ops.txt.pp
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CallConv.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Config.hs
- compiler/GHC/Cmm/ContFlowOpt.hs
- compiler/GHC/Cmm/Dataflow/Block.hs
- compiler/GHC/Cmm/Dataflow/Collections.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/Dominators.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Graph.hs
- compiler/GHC/Cmm/Info.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/LRegSet.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/ProcPoint.hs
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/Sink.hs
- + compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/Cmm/Type.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Cond.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/BlockLayout.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/CFG/Dominators.hs
- compiler/GHC/CmmToAsm/Dwarf.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/Monad.hs
- compiler/GHC/CmmToAsm/PIC.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Instr.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Graph.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
- compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- compiler/GHC/CmmToAsm/Reg/Target.hs
- compiler/GHC/CmmToAsm/Wasm.hs
- compiler/GHC/CmmToAsm/Wasm/Asm.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/Wasm/Types.hs
- compiler/GHC/CmmToAsm/Wasm/Utils.hs
- compiler/GHC/CmmToAsm/X86.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToAsm/X86/Regs.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Config.hs
- compiler/GHC/CmmToLlvm/Mangler.hs
- compiler/GHC/CmmToLlvm/Ppr.hs
- compiler/GHC/CmmToLlvm/Regs.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Class.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion.hs-boot
- compiler/GHC/Core/Coercion/Axiom.hs
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/ConLike.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/FamInstEnv.hs
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/LateCC.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Map/Expr.hs
- compiler/GHC/Core/Map/Type.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CSE.hs
- compiler/GHC/Core/Opt/CallerCC.hs
- − compiler/GHC/Core/Opt/CallerCC.hs-boot
- + compiler/GHC/Core/Opt/CallerCC/Types.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Exitify.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/FloatOut.hs
- compiler/GHC/Core/Opt/LiberateCase.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- + compiler/GHC/Core/Opt/Simplify/Inline.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Monad.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Opt/WorkWrap.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Reduction.hs
- compiler/GHC/Core/RoughMap.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/Seq.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Stats.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/Tidy.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/FVs.hs
- + compiler/GHC/Core/TyCo/FVs.hs-boot
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Rep.hs-boot
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/TyCon/Env.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Type.hs-boot
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/UsageEnv.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/Bag.hs
- compiler/GHC/Data/BooleanFormula.hs
- compiler/GHC/Data/EnumSet.hs
- compiler/GHC/Data/FastString.hs
- compiler/GHC/Data/FastString/Env.hs
- compiler/GHC/Data/Graph/Collapse.hs
- compiler/GHC/Data/Graph/Directed.hs
- compiler/GHC/Data/Graph/Inductive/PatriciaTree.hs
- compiler/GHC/Data/Graph/UnVar.hs
- compiler/GHC/Data/IOEnv.hs
- compiler/GHC/Data/List/SetOps.hs
- compiler/GHC/Data/Maybe.hs
- compiler/GHC/Data/OrdList.hs
- compiler/GHC/Data/Unboxed.hs
- + compiler/GHC/Data/Word64Map.hs
- + compiler/GHC/Data/Word64Map/Internal.hs
- + compiler/GHC/Data/Word64Map/Lazy.hs
- + compiler/GHC/Data/Word64Map/Strict.hs
- + compiler/GHC/Data/Word64Map/Strict/Internal.hs
- + compiler/GHC/Data/Word64Set.hs
- + compiler/GHC/Data/Word64Set/Internal.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Backend/Internal.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/CmdLine.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config.hs
- compiler/GHC/Driver/Config/Cmm.hs
- compiler/GHC/Driver/Config/Cmm/Parser.hs
- compiler/GHC/Driver/Config/CmmToAsm.hs
- compiler/GHC/Driver/Config/CmmToLlvm.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Core/Lint/Interactive.hs
- compiler/GHC/Driver/Config/Core/Opt/Arity.hs
- compiler/GHC/Driver/Config/Core/Opt/LiberateCase.hs
- compiler/GHC/Driver/Config/Core/Opt/Simplify.hs
- compiler/GHC/Driver/Config/Core/Opt/WorkWrap.hs
- compiler/GHC/Driver/Config/Core/Rules.hs
- compiler/GHC/Driver/Config/CoreToStg.hs
- compiler/GHC/Driver/Config/CoreToStg/Prep.hs
- compiler/GHC/Driver/Config/Diagnostic.hs
- compiler/GHC/Driver/Config/Finder.hs
- compiler/GHC/Driver/Config/HsToCore.hs
- compiler/GHC/Driver/Config/HsToCore/Ticks.hs
- + compiler/GHC/Driver/Config/Linker.hs
- compiler/GHC/Driver/Config/Logger.hs
- compiler/GHC/Driver/Config/Stg/Debug.hs
- compiler/GHC/Driver/Config/Stg/Lift.hs
- compiler/GHC/Driver/Config/Stg/Pipeline.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- + compiler/GHC/Driver/Config/StgToJS.hs
- compiler/GHC/Driver/Config/Tidy.hs
- + compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/GenerateCgIPEStub.hs
- compiler/GHC/Driver/Hooks.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- + compiler/GHC/Driver/MakeSem.hs
- compiler/GHC/Driver/Monad.hs
- compiler/GHC/Driver/Phases.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Pipeline/LogQueue.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Ppr.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Doc.hs
- compiler/GHC/Hs/DocString.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Binds.hs-boot
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/Call.hs
- compiler/GHC/HsToCore/Foreign/Decl.hs
- + compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Utils.hs
- compiler/GHC/HsToCore/GuardedRHSs.hs
- compiler/GHC/HsToCore/ListComp.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match.hs-boot
- compiler/GHC/HsToCore/Match/Constructor.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Check.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Ppr.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Types.hs
- compiler/GHC/HsToCore/Pmc/Utils.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Types.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/HsToCore/Utils.hs
- compiler/GHC/Iface/Binary.hs
- + compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Errors.hs
- + compiler/GHC/Iface/Errors/Ppr.hs
- + compiler/GHC/Iface/Errors/Types.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Binary.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Flags.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Tidy/StaticPtrTable.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Iface/Type.hs-boot
- compiler/GHC/IfaceToCore.hs
- + compiler/GHC/JS/Make.hs
- + compiler/GHC/JS/Optimizer.hs
- + compiler/GHC/JS/Ppr.hs
- + compiler/GHC/JS/Syntax.hs
- + compiler/GHC/JS/Transform.hs
- + compiler/GHC/JS/Unsat/Syntax.hs
- + compiler/GHC/Linker/Config.hs
- + compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Dynamic.hs
- compiler/GHC/Linker/ExtraObj.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/MacOS.hs
- compiler/GHC/Linker/Static.hs
- compiler/GHC/Linker/Static/Utils.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Llvm.hs
- compiler/GHC/Llvm/MetaData.hs
- compiler/GHC/Llvm/Ppr.hs
- compiler/GHC/Llvm/Syntax.hs
- compiler/GHC/Llvm/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/HaddockLex.x
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/Types.hs
- compiler/GHC/Platform.hs
- + compiler/GHC/Platform/LoongArch64.hs
- compiler/GHC/Platform/Regs.hs
- compiler/GHC/Plugins.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Doc.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Expr.hs-boot
- compiler/GHC/Rename/Fixity.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Splice.hs-boot
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Context.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Heap/Layout.hs
- compiler/GHC/Runtime/Interpreter.hs
- + compiler/GHC/Runtime/Interpreter/JS.hs
- + compiler/GHC/Runtime/Interpreter/Process.hs
- compiler/GHC/Runtime/Interpreter/Types.hs
- compiler/GHC/Runtime/Loader.hs
- + compiler/GHC/Runtime/Utils.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/Constants.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/BcPrep.hs
- compiler/GHC/Stg/CSE.hs
- compiler/GHC/Stg/Debug.hs
- compiler/GHC/Stg/FVs.hs
- compiler/GHC/Stg/InferTags.hs
- compiler/GHC/Stg/InferTags/Rewrite.hs
- compiler/GHC/Stg/InferTags/TagSig.hs
- compiler/GHC/Stg/InferTags/Types.hs
- compiler/GHC/Stg/Lift.hs
- compiler/GHC/Stg/Lift/Analysis.hs
- compiler/GHC/Stg/Lift/Monad.hs
- + compiler/GHC/Stg/Lift/Types.hs
- compiler/GHC/Stg/Lint.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/Stg/Stats.hs
- compiler/GHC/Stg/Syntax.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/Stg/Utils.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm.hs
- compiler/GHC/StgToCmm/ArgRep.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/CgUtils.hs
- compiler/GHC/StgToCmm/Closure.hs
- compiler/GHC/StgToCmm/Config.hs
- compiler/GHC/StgToCmm/DataCon.hs
- compiler/GHC/StgToCmm/Env.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/ExtCode.hs
- compiler/GHC/StgToCmm/Foreign.hs
- compiler/GHC/StgToCmm/Heap.hs
- compiler/GHC/StgToCmm/InfoTableProv.hs
- compiler/GHC/StgToCmm/Layout.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Monad.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/Prof.hs
- compiler/GHC/StgToCmm/TagCheck.hs
- compiler/GHC/StgToCmm/Ticky.hs
- compiler/GHC/StgToCmm/Types.hs
- compiler/GHC/StgToCmm/Utils.hs
- + compiler/GHC/StgToJS.hs
- + compiler/GHC/StgToJS/Apply.hs
- + compiler/GHC/StgToJS/Arg.hs
- + compiler/GHC/StgToJS/Closure.hs
- + compiler/GHC/StgToJS/CodeGen.hs
- + compiler/GHC/StgToJS/DataCon.hs
- + compiler/GHC/StgToJS/Deps.hs
- + compiler/GHC/StgToJS/Expr.hs
- + compiler/GHC/StgToJS/ExprCtx.hs
- + compiler/GHC/StgToJS/FFI.hs
- + compiler/GHC/StgToJS/Heap.hs
- + compiler/GHC/StgToJS/Ids.hs
- + compiler/GHC/StgToJS/Linker/Linker.hs
- + compiler/GHC/StgToJS/Linker/Opt.hs
- + compiler/GHC/StgToJS/Linker/Types.hs
- + compiler/GHC/StgToJS/Linker/Utils.hs
- + compiler/GHC/StgToJS/Literal.hs
- + compiler/GHC/StgToJS/Monad.hs
- + compiler/GHC/StgToJS/Object.hs
- + compiler/GHC/StgToJS/Prim.hs
- + compiler/GHC/StgToJS/Profiling.hs
- + compiler/GHC/StgToJS/Regs.hs
- + compiler/GHC/StgToJS/Rts/Rts.hs
- + compiler/GHC/StgToJS/Rts/Types.hs
- + compiler/GHC/StgToJS/Sinker.hs
- + compiler/GHC/StgToJS/Stack.hs
- + compiler/GHC/StgToJS/StaticPtr.hs
- + compiler/GHC/StgToJS/Symbols.hs
- + compiler/GHC/StgToJS/Types.hs
- + compiler/GHC/StgToJS/Utils.hs
- compiler/GHC/SysTools.hs
- compiler/GHC/SysTools/Cpp.hs
- − compiler/GHC/SysTools/Info.hs
- compiler/GHC/SysTools/Process.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/SysTools/Terminal.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Deriv/Infer.hs
- compiler/GHC/Tc/Deriv/Utils.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole.hs
- compiler/GHC/Tc/Errors/Hole.hs-boot
- compiler/GHC/Tc/Errors/Hole/FitTypes.hs
- − compiler/GHC/Tc/Errors/Hole/FitTypes.hs-boot
- + compiler/GHC/Tc/Errors/Hole/Plugin.hs
- + compiler/GHC/Tc/Errors/Hole/Plugin.hs-boot
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- + compiler/GHC/Tc/Errors/Types/PromotionErr.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Match.hs-boot
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Rule.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Instance/FunDeps.hs
- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Module.hs-boot
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Interact.hs → compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Canonical.hs → compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- + compiler/GHC/Tc/Solver/Irred.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Rewrite.hs
- + compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/Solver/Types.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Build.hs
- compiler/GHC/Tc/TyCl/Class.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/TyCl/Utils.hs
- compiler/GHC/Tc/Types.hs
- − compiler/GHC/Tc/Types.hs-boot
- + compiler/GHC/Tc/Types/BasicTypes.hs
- compiler/GHC/Tc/Types/Constraint.hs
- + compiler/GHC/Tc/Types/CtLocEnv.hs
- + compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/EvTerm.hs
- compiler/GHC/Tc/Types/Evidence.hs
- + compiler/GHC/Tc/Types/LclEnv.hs
- + compiler/GHC/Tc/Types/LclEnv.hs-boot
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/Origin.hs-boot
- + compiler/GHC/Tc/Types/TH.hs
- + compiler/GHC/Tc/Types/TcRef.hs
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Env.hs
- − compiler/GHC/Tc/Utils/Env.hs-boot
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
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- testsuite/tests/wcompat-warnings/Template.hs
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- testsuite/timeout/Makefile
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- utils/check-exact/Transform.hs
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- utils/deriveConstants/Main.hs
- + utils/dump-decls/Main.hs
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- utils/ghc-pkg/Main.hs
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- utils/haddock
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- − utils/hpc/HpcFlags.hs
- − utils/hpc/HpcLexer.hs
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- utils/hsc2hs
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- utils/iserv/src/Main.hs
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- utils/remote-iserv/remote-iserv.cabal.in
- utils/unlit/unlit.c
The diff was not included because it is too large.
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[Git][ghc/ghc][wip/T22423] 31 commits: Document NcgImpl methods
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T22423 at Glasgow Haskell Compiler / GHC
Commits:
b2682534 by Rodrigo Mesquita at 2024-05-10T01:47:51-04:00
Document NcgImpl methods
Fixes #19914
- - - - -
4d3acbcf by Zejun Wu at 2024-05-10T01:48:28-04:00
Make renamer to be more flexible with parens in the LHS of the rules
We used to reject LHS like `(f a) b` in RULES and requires it to be written as
`f a b`. It will be handy to allow both as the expression may be more
readable with extra parens in some cases when infix operator is involved.
Espceially when TemplateHaskell is used, extra parens may be added out of
user's control and result in "valid" rules being rejected and there
are not always ways to workaround it.
Fixes #24621
- - - - -
ab840ce6 by Ben Gamari at 2024-05-10T01:49:04-04:00
IPE: Eliminate dependency on Read
Instead of encoding the closure type as decimal string we now simply
represent it as an integer, eliminating the need for `Read` in
`GHC.Internal.InfoProv.Types.peekInfoProv`.
Closes #24504.
-------------------------
Metric Decrease:
T24602_perf_size
size_hello_artifact
-------------------------
- - - - -
a9979f55 by Cheng Shao at 2024-05-10T01:49:43-04:00
testsuite: fix testwsdeque with recent clang
This patch fixes compilation of testwsdeque.c with recent versions of
clang, which will fail with the error below:
```
testwsdeque.c:95:33: error:
warning: format specifies type 'long' but the argument has type 'void *' [-Wformat]
95 | barf("FAIL: %ld %d %d", p, n, val);
| ~~~ ^
testwsdeque.c:95:39: error:
warning: format specifies type 'int' but the argument has type 'StgWord' (aka 'unsigned long') [-Wformat]
95 | barf("FAIL: %ld %d %d", p, n, val);
| ~~ ^~~
| %lu
testwsdeque.c:133:42: error:
error: incompatible function pointer types passing 'void (void *)' to parameter of type 'OSThreadProc *' (aka 'void *(*)(void *)') [-Wincompatible-function-pointer-types]
133 | createOSThread(&ids[n], "thief", thief, (void*)(StgWord)n);
| ^~~~~
/workspace/ghc/_build/stage1/lib/../lib/x86_64-linux-ghc-9.11.20240502/rts-1.0.2/include/rts/OSThreads.h:193:51: error:
note: passing argument to parameter 'startProc' here
193 | OSThreadProc *startProc, void *param);
| ^
2 warnings and 1 error generated.
```
- - - - -
c2b33fc9 by Rodrigo Mesquita at 2024-05-10T01:50:20-04:00
Rename pre-processor invocation args
Small clean up. Uses proper names for the various groups of arguments
that make up the pre-processor invocation.
- - - - -
2b1af08b by Cheng Shao at 2024-05-10T01:50:55-04:00
ghc-heap: fix typo in ghc-heap cbits
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fc2d6de1 by Jade at 2024-05-10T21:07:16-04:00
Improve performance of Data.List.sort(By)
This patch improves the algorithm to sort lists in base.
It does so using two strategies:
1) Use a four-way-merge instead of the 'default' two-way-merge.
This is able to save comparisons and allocations.
2) Use `(>) a b` over `compare a b == GT` and allow inlining and specialization.
This mainly benefits types with a fast (>).
Note that this *may* break instances with a *malformed* Ord instance
where `a > b` is *not* equal to `compare a b == GT`.
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/236
Fixes #24280
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
T10421
T13719
T15164
T18698a
T18698b
T1969
T9872a
T9961
T18730
WWRec
T12425
T15703
-------------------------
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1012e8aa by Matthew Pickering at 2024-05-10T21:07:52-04:00
Revert "ghcup-metadata: Drop output_name field"
This reverts commit ecbf22a6ac397a791204590f94c0afa82e29e79f.
This breaks the ghcup metadata generation on the nightly jobs.
- - - - -
daff1e30 by Jannis at 2024-05-12T13:38:35-04:00
Division by constants optimization
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413217ba by Andreas Klebinger at 2024-05-12T13:39:11-04:00
Tidy: Add flag to expose unfoldings if they take dictionary arguments.
Add the flag `-fexpose-overloaded-unfoldings` to be able to control this
behaviour.
For ghc's boot libraries file size grew by less than 1% when it was
enabled. However I refrained from enabling it by default for now.
I've also added a section on specialization more broadly to the users
guide.
-------------------------
Metric Decrease:
MultiLayerModulesTH_OneShot
Metric Increase:
T12425
T13386
hard_hole_fits
-------------------------
- - - - -
c5d89412 by Zubin Duggal at 2024-05-13T22:19:53-04:00
Don't store a GlobalRdrEnv in `mi_globals` for GHCi.
GHCi only needs the `mi_globals` field for modules imported with
:module +*SomeModule.
It uses this field to make the top level environment in `SomeModule` available
to the repl.
By default, only the first target in the command line parameters is
"star" loaded into GHCi. Other modules have to be manually "star" loaded
into the repl.
Storing the top level GlobalRdrEnv for each module is very wasteful, especially
given that we will most likely never need most of these environments.
Instead we store only the information needed to reconstruct the top level environment
in a module, which is the `IfaceTopEnv` data structure, consisting of all import statements
as well as all top level symbols defined in the module (not taking export lists into account)
When a particular module is "star-loaded" into GHCi (as the first commandline target, or via
an explicit `:module +*SomeModule`, we reconstruct the top level environment on demand using
the `IfaceTopEnv`.
- - - - -
d65bf4a2 by Fendor at 2024-05-13T22:20:30-04:00
Add perf regression test for `-fwrite-if-simplified-core`
- - - - -
2c0f8ddb by Andrei Borzenkov at 2024-05-13T22:21:07-04:00
Improve pattern to type pattern transformation (23739)
`pat_to_type_pat` function now can handle more patterns:
- TuplePat
- ListPat
- LitPat
- NPat
- ConPat
Allowing these new constructors in type patterns significantly
increases possible shapes of type patterns without `type` keyword.
This patch also changes how lookups in `lookupOccRnConstr` are
performed, because we need to fall back into
types when we didn't find a constructor on data level to perform
`ConPat` to type transformation properly.
- - - - -
be514bb4 by Cheng Shao at 2024-05-13T22:21:43-04:00
hadrian: fix hadrian building with ghc-9.10.1
- - - - -
ad38e954 by Cheng Shao at 2024-05-13T22:21:43-04:00
linters: fix lint-whitespace compilation with ghc-9.10.1
- - - - -
a593f284 by Andreas Klebinger at 2024-05-15T07:32:10-04:00
Expand the `inline` rule to look through casts/ticks.
Fixes #24808
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b1e0c313 by Cheng Shao at 2024-05-15T07:32:46-04:00
testsuite: bump PartialDownSweep timeout to 5x on wasm32
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b2227487 by Fendor at 2024-05-15T17:14:06-04:00
Add Eq and Ord instance to `IfaceType`
We add an `Ord` instance so that we can store `IfaceType` in a
`Data.Map` container.
This is required to deduplicate `IfaceType` while writing `.hi` files to
disk. Deduplication has many beneficial consequences to both file size
and memory usage, as the deduplication enables implicit sharing of
values.
See issue #24540 for more motivation.
The `Ord` instance would be unnecessary if we used a `TrieMap` instead
of `Data.Map` for the deduplication process. While in theory this is
clerarly the better option, experiments on the agda code base showed
that a `TrieMap` implementation has worse run-time performance
characteristics.
To the change itself, we mostly derive `Eq` and `Ord`. This requires us
to change occurrences of `FastString` with `LexicalFastString`, since
`FastString` has no `Ord` instance.
We change the definition of `IfLclName` to a newtype of
`LexicalFastString`, to make such changes in the future easier.
Bump haddock submodule for IfLclName changes
- - - - -
d368f9a6 by Fendor at 2024-05-15T17:14:06-04:00
Move out LiteralMap to avoid cyclic module dependencies
- - - - -
2fcc09fd by Fendor at 2024-05-15T17:14:06-04:00
Add deduplication table for `IfaceType`
The type `IfaceType` is a highly redundant, tree-like data structure.
While benchmarking, we realised that the high redundancy of `IfaceType`
causes high memory consumption in GHCi sessions when byte code is
embedded into the `.hi` file via `-fwrite-if-simplified-core` or
`-fbyte-code-and-object-code`.
Loading such `.hi` files from disk introduces many duplicates of
memory expensive values in `IfaceType`, such as `IfaceTyCon`,
`IfaceTyConApp`, `IA_Arg` and many more.
We improve the memory behaviour of GHCi by adding an additional
deduplication table for `IfaceType` to the serialisation of `ModIface`,
similar to how we deduplicate `Name`s and `FastString`s.
When reading the interface file back, the table allows us to automatically
share identical values of `IfaceType`.
To provide some numbers, we evaluated this patch on the agda code base.
We loaded the full library from the `.hi` files, which contained the
embedded core expressions (`-fwrite-if-simplified-core`).
Before this patch:
* Load time: 11.7 s, 2.5 GB maximum residency.
After this patch:
* Load time: 7.3 s, 1.7 GB maximum residency.
This deduplication has the beneficial side effect to additionally reduce
the size of the on-disk interface files tremendously.
For example, on agda, we reduce the size of `.hi` files (with
`-fwrite-if-simplified-core`):
* Before: 101 MB on disk
* Now: 24 MB on disk
This has even a beneficial side effect on the cabal store. We reduce the
size of the store on disk:
* Before: 341 MB on disk
* Now: 310 MB on disk
Note, none of the dependencies have been compiled with
`-fwrite-if-simplified-core`, but `IfaceType` occurs in multiple
locations in a `ModIface`.
We also add IfaceType deduplication table to .hie serialisation and
refactor .hie file serialisation to use the same infrastrucutre as
`putWithTables`.
Bump haddock submodule to accomodate for changes to the deduplication
table layout and binary interface.
- - - - -
36aa7cf1 by Fendor at 2024-05-15T17:14:06-04:00
Add run-time configurability of `.hi` file compression
Introduce the flag `-fwrite-if-compression=<n>` which allows to
configure the compression level of writing .hi files.
The motivation is that some deduplication operations are too expensive
for the average use case. Hence, we introduce multiple compression
levels with variable impact on performance, but still reduce the
memory residency and `.hi` file size on disk considerably.
We introduce three compression levels:
* `1`: `Normal` mode. This is the least amount of compression.
It deduplicates only `Name` and `FastString`s, and is naturally the
fastest compression mode.
* `2`: `Safe` mode. It has a noticeable impact on .hi file size and is
marginally slower than `Normal` mode. In general, it should be safe to
always use `Safe` mode.
* `3`: `Full` deduplication mode. Deduplicate as much as we can,
resulting in minimal .hi files, but at the cost of additional
compilation time.
Reading .hi files doesn't need to know the initial compression level,
and can always deserialise a `ModIface`, as we write out a byte that
indicates the next value has been deduplicated.
This allows users to experiment with different compression levels for
packages, without recompilation of dependencies.
Note, the deduplication also has an additional side effect of reduced
memory consumption to implicit sharing of deduplicated elements.
See https://gitlab.haskell.org/ghc/ghc/-/issues/24540 for example where
that matters.
-------------------------
Metric Decrease:
MultiLayerModulesDefsGhciWithCore
T16875
T21839c
T24471
hard_hole_fits
libdir
-------------------------
- - - - -
1e63a6fb by Matthew Pickering at 2024-05-15T17:14:07-04:00
Introduce regression tests for `.hi` file sizes
Add regression tests to track how `-fwrite-if-compression` levels affect
the size of `.hi` files.
- - - - -
639d742b by M Farkas-Dyck at 2024-05-15T17:14:49-04:00
TTG: ApplicativeStatement exist only in Rn and Tc
Co-Authored-By: romes <rodrigo.m.mesquita(a)gmail.com>
- - - - -
aa7b336b by Jade at 2024-05-15T23:06:17-04:00
Documentation: Improve documentation for symbols exported from System.IO
- - - - -
c561de8f by Jade at 2024-05-15T23:06:54-04:00
Improve suggestions for language extensions
- When suggesting Language extensions, also suggest Extensions which imply them
- Suggest ExplicitForAll and GADTSyntax instead of more specific
extensions
- Rephrase suggestion to include the term 'Extension'
- Also moves some flag specific definitions out of Session.hs into
Flags.hs (#24478)
Fixes: #24477
Fixes: #24448
Fixes: #10893
- - - - -
4c7ae2a1 by Andreas Klebinger at 2024-05-15T23:07:30-04:00
Testsuite: Check if llvm assembler is available for have_llvm
- - - - -
bc672166 by Torsten Schmits at 2024-05-15T23:08:06-04:00
refactor quadratic search in warnMissingHomeModules
- - - - -
7875e8cb by Torsten Schmits at 2024-05-15T23:08:06-04:00
add test that runs MakeDepend on thousands of modules
- - - - -
f35d2520 by Simon Peyton Jones at 2024-05-16T13:38:31+01:00
Solve #22423 by inlining only values in callSiteInline
Needs a proper commit message ... this is just to try it out.
- - - - -
dd9a709c by Simon Peyton Jones at 2024-05-16T13:38:31+01:00
Refine exprIsWorkFree
This makes it a bit less eager to inline multi-branch cases.
- - - - -
d06c60ec by Simon Peyton Jones at 2024-05-16T13:38:31+01:00
Wibble
- - - - -
415 changed files:
- .gitlab/ci.sh
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- compiler/GHC.hs
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/Config.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
- compiler/GHC/CmmToAsm/Monad.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Map/Expr.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/Simplify/Inline.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/Data/FastString.hs
- compiler/GHC/Data/TrieMap.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Config/Cmm.hs
- compiler/GHC/Driver/Config/Tidy.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/GuardedRHSs.hs
- compiler/GHC/HsToCore/ListComp.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Binary.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Binary.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Stg/CSE.hs
- compiler/GHC/StgToCmm/InfoTableProv.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToJS/Object.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Do.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/PkgQual.hs
- compiler/GHC/Types/Unique/Set.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Unit/Module/ModIface.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- compiler/Language/Haskell/Syntax/Type.hs
- compiler/Language/Haskell/Syntax/Type.hs-boot
- docs/users_guide/9.12.1-notes.rst
- docs/users_guide/hints.rst
- docs/users_guide/using-optimisation.rst
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Info.hs
- ghc/GHCi/UI/Monad.hs
- hadrian/cabal.project
- hadrian/hadrian.cabal
- hadrian/src/Settings/Builders/RunTest.hs
- libraries/base/changelog.md
- libraries/base/src/GHC/IO/Handle.hs
- libraries/base/src/GHC/IO/StdHandles.hs
- libraries/base/src/System/IO.hs
- libraries/ghc-heap/cbits/Stack.cmm
- libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
- libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs
- libraries/ghc-internal/src/GHC/Internal/IO/Handle/Text.hs
- libraries/ghc-internal/src/GHC/Internal/IO/Handle/Types.hs
- libraries/ghc-internal/src/GHC/Internal/IO/StdHandles.hs
- libraries/ghc-internal/src/GHC/Internal/InfoProv/Types.hsc
- libraries/ghc-internal/src/GHC/Internal/System/IO.hs
- linters/lint-whitespace/lint-whitespace.cabal
- rts/IPE.c
- rts/Trace.c
- rts/eventlog/EventLog.c
- rts/include/rts/Constants.h
- rts/include/rts/IPE.h
- testsuite/driver/testlib.py
- testsuite/tests/dependent/should_fail/T15215.stderr
- testsuite/tests/dependent/should_fail/T15859.stderr
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- testsuite/tests/gadt/gadtSyntaxFail003.stderr
- testsuite/tests/generics/T10604/T10604_no_PolyKinds.stderr
- testsuite/tests/generics/T5462No1.stderr
- testsuite/tests/ghc-api/downsweep/all.T
- testsuite/tests/ghci/prog006/prog006.stderr
- testsuite/tests/ghci/prog011/prog011.stderr
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- testsuite/tests/ghci/scripts/ghci057.stderr
- testsuite/tests/ghci/should_run/T10857a.stdout
- testsuite/tests/ghci/should_run/T15806.stderr
- + testsuite/tests/iface/IfaceSharingIfaceType.hs
- + testsuite/tests/iface/IfaceSharingName.hs
- + testsuite/tests/iface/Lib.hs
- + testsuite/tests/iface/Makefile
- + testsuite/tests/iface/all.T
- + testsuite/tests/iface/if_faststring.hs
- + testsuite/tests/iface/if_ifacetype.hs
- + testsuite/tests/iface/if_name.hs
- testsuite/tests/indexed-types/should_fail/BadFamInstDecl.stderr
- testsuite/tests/indexed-types/should_fail/NotRelaxedExamples.stderr
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- testsuite/tests/indexed-types/should_fail/T15172.stderr
- testsuite/tests/indexed-types/should_fail/TyFamUndec.stderr
- + testsuite/tests/lib/base/Sort.hs
- + testsuite/tests/lib/base/Sort.stdout
- testsuite/tests/lib/base/all.T
- testsuite/tests/linear/should_fail/LinearNoExt.stderr
- testsuite/tests/linear/should_fail/LinearNoExtU.stderr
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- + testsuite/tests/numeric/should_run/div01.hs
- + testsuite/tests/numeric/should_run/div01.stdout
- + testsuite/tests/numeric/should_run/div01.stdout-ws-32
- testsuite/tests/numeric/should_run/mul2.hs
- testsuite/tests/numeric/should_run/mul2.stdout
- testsuite/tests/numeric/should_run/mul2.stdout-ws-32
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- + testsuite/tests/perf/compiler/large-project/all.T
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- testsuite/tests/typecheck/should_fail/tcfail027.stderr
- testsuite/tests/typecheck/should_fail/tcfail044.stderr
- testsuite/tests/typecheck/should_fail/tcfail047.stderr
- testsuite/tests/typecheck/should_fail/tcfail079.stderr
- testsuite/tests/typecheck/should_fail/tcfail094.stderr
- testsuite/tests/typecheck/should_fail/tcfail108.stderr
- testsuite/tests/typecheck/should_fail/tcfail117.stderr
- testsuite/tests/typecheck/should_fail/tcfail127.stderr
- testsuite/tests/typecheck/should_fail/tcfail139.stderr
- testsuite/tests/typecheck/should_fail/tcfail150.stderr
- testsuite/tests/typecheck/should_fail/tcfail154.stderr
- testsuite/tests/typecheck/should_fail/tcfail157.stderr
- testsuite/tests/typecheck/should_fail/tcfail166.stderr
- testsuite/tests/typecheck/should_fail/tcfail173.stderr
- testsuite/tests/typecheck/should_fail/tcfail183.stderr
- testsuite/tests/typecheck/should_fail/tcfail184.stderr
- testsuite/tests/typecheck/should_fail/tcfail196.stderr
- testsuite/tests/typecheck/should_fail/tcfail197.stderr
- testsuite/tests/typecheck/should_fail/tcfail209.stderr
- testsuite/tests/typecheck/should_fail/tcfail209a.stderr
- testsuite/tests/typecheck/should_fail/tcfail213.stderr
- testsuite/tests/typecheck/should_fail/tcfail214.stderr
- testsuite/tests/typecheck/should_fail/tcfail216.stderr
- testsuite/tests/typecheck/should_fail/tcfail217.stderr
- testsuite/tests/vdq-rta/should_fail/T22326_fail_ext1.stderr
- testsuite/tests/vdq-rta/should_fail/T22326_fail_ext2.stderr
- testsuite/tests/warnings/should_compile/T18862a.stderr
- testsuite/tests/warnings/should_fail/T24396c.stderr
- testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr
- utils/check-exact/ExactPrint.hs
- utils/dump-decls/Main.hs
- utils/haddock
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[Git][ghc/ghc][wip/T21608] 798 commits: Allow `let` just before pure/return in ApplicativeDo
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T21608 at Glasgow Haskell Compiler / GHC
Commits:
e2ae9518 by Ziyang Liu at 2022-05-06T19:22:22-04:00
Allow `let` just before pure/return in ApplicativeDo
The following is currently rejected:
```haskell
-- F is an Applicative but not a Monad
x :: F (Int, Int)
x = do
a <- pure 0
let b = 1
pure (a, b)
```
This has bitten me multiple times. This MR contains a simple fix:
only allow a "let only" segment to be merged with the next (and not
the previous) segment. As a result, when the last one or more
statements before pure/return are `LetStmt`s, there will be one
more segment containing only those `LetStmt`s.
Note that if the `let` statement mentions a name bound previously, then
the program is still rejected, for example
```haskell
x = do
a <- pure 0
let b = a + 1
pure (a, b)
```
or the example in #18559. To support this would require a more
complex approach, but this is IME much less common than the
previous case.
- - - - -
0415449a by Matthew Pickering at 2022-05-06T19:22:58-04:00
template-haskell: Fix representation of OPAQUE pragmas
There is a mis-match between the TH representation of OPAQUE pragmas and
GHC's internal representation due to how OPAQUE pragmas disallow phase
annotations. It seemed most in keeping to just fix the wired in name
issue by adding a special case to the desugaring of INLINE pragmas
rather than making TH/GHC agree with how the representation should look.
Fixes #21463
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4de887e2 by Simon Peyton Jones at 2022-05-06T19:23:34-04:00
Comments only: Note [AppCtxt]
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6e69964d by Matthew Pickering at 2022-05-06T19:24:10-04:00
Fix name of windows release bindist in doc-tarball job
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ced4689e by Matthew Pickering at 2022-05-06T19:24:46-04:00
ci: Generate source-tarball in release jobs
We need to distribute the source tarball so we should generate it in the
CI pipeline.
- - - - -
3c91de21 by Rob at 2022-05-08T13:40:53+02:00
Change Specialise to use OrdList.
Fixes #21362
Metric Decrease:
T16875
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67072c31 by Simon Jakobi at 2022-05-08T12:23:43-04:00
Tweak GHC.CmmToAsm.CFG.delEdge
mapAdjust is more efficient than mapAlter.
- - - - -
374554bb by Teo Camarasu at 2022-05-09T16:24:37-04:00
Respect -po when heap profiling (#21446)
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1ea414b6 by Teo Camarasu at 2022-05-09T16:24:37-04:00
add test case for #21446
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c7902078 by Jens Petersen at 2022-05-09T16:25:17-04:00
avoid hadrian/bindist/Makefile install_docs error when --docs=none
When docs are disabled the bindist does not have docs/ and hence docs-utils/ is not generated.
Here we just test that docs-utils exists before attempting to install prologue.txt and gen_contents_index
to avoid the error:
/usr/bin/install: cannot stat 'docs-utils/prologue.txt': No such file or directory
make: *** [Makefile:195: install_docs] Error 1
- - - - -
158bd659 by Hécate Moonlight at 2022-05-09T16:25:56-04:00
Correct base's changelog for 4.16.1.0
This commit reaffects the new Ix instances of the foreign integral
types from base 4.17 to 4.16.1.0
closes #21529
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a4fbb589 by Sylvain Henry at 2022-05-09T16:26:36-04:00
STG: only print cost-center if asked to
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50347ded by Gergő Érdi at 2022-05-10T11:43:33+00:00
Improve "Glomming" note
Add a paragraph that clarifies that `occurAnalysePgm` finding out-of-order
references, and thus needing to glom, is not a cause for concern when its
root cause is rewrite rules.
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df2e3373 by Eric Lindblad at 2022-05-10T20:45:41-04:00
update INSTALL
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dcac3833 by Matthew Pickering at 2022-05-10T20:46:16-04:00
driver: Make -no-keep-o-files -no-keep-hi-files work in --make mode
It seems like it was just an oversight to use the incorrect DynFlags
(global rather than local) when implementing these two options. Using
the local flags allows users to request these intermediate files get
cleaned up, which works fine in --make mode because
1. Interface files are stored in memory
2. Object files are only cleaned at the end of session (after link)
Fixes #21349
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35da81f8 by Ben Gamari at 2022-05-10T20:46:52-04:00
configure: Check for ffi.h
As noted in #21485, we checked for ffi.h yet then failed to throw an
error if it is missing.
Fixes #21485.
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bdc99cc2 by Simon Peyton Jones at 2022-05-10T20:47:28-04:00
Check for uninferrable variables in tcInferPatSynDecl
This fixes #21479
See Note [Unquantified tyvars in a pattern synonym]
While doing this, I found that some error messages pointed at the
pattern synonym /name/, rather than the /declaration/ so I widened the
SrcSpan to encompass the declaration.
- - - - -
142a73d9 by Matthew Pickering at 2022-05-10T20:48:04-04:00
hadrian: Fix split-sections transformer
The splitSections transformer has been broken since -dynamic-too support
was implemented in hadrian. This is because we actually build the
dynamic way when building the dynamic way, so the predicate would always
fail.
The fix is to just always pass `split-sections` even if it doesn't do
anything for a particular way.
Fixes #21138
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699f5935 by Matthew Pickering at 2022-05-10T20:48:04-04:00
packaging: Build perf builds with -split-sections
In 8f71d958 the make build system was made to use split-sections on
linux systems but it appears this logic never made it to hadrian.
There is the split_sections flavour transformer but this doesn't appear
to be used for perf builds on linux.
Closes #21135
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21feece2 by Simon Peyton Jones at 2022-05-10T20:48:39-04:00
Use the wrapper for an unlifted binding
We assumed the wrapper for an unlifted binding is the identity,
but as #21516 showed, that is no always true.
Solution is simple: use it.
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68d1ea5f by Matthew Pickering at 2022-05-10T20:49:15-04:00
docs: Fix path to GHC API docs in index.html
In the make bindists we generate documentation in docs/ghc-<VER> but the
hadrian bindists generate docs/ghc/ so the path to the GHC API docs was
wrong in the index.html file.
Rather than make the hadrian and make bindists the same it was easier to
assume that if you're using the mkDocs script that you're using hadrian
bindists.
Fixes #21509
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9d8f44a9 by Matthew Pickering at 2022-05-10T20:49:51-04:00
hadrian: Don't pass -j to haddock
This has high potential for oversubcribing as many haddock jobs can be
spawned in parralel which will each request the given number of
capabilities.
Once -jsem is implemented (#19416, !5176) we can expose that haddock via
haddock and use that to pass a semaphore.
Ticket #21136
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fec3e7aa by Matthew Pickering at 2022-05-10T20:50:27-04:00
hadrian: Only copy and install libffi headers when using in-tree libffi
When passed `--use-system-libffi` then we shouldn't copy and install the
headers from the system package. Instead the headers are expected to be
available as a runtime dependency on the users system.
Fixes #21485 #21487
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5b791ed3 by mikael at 2022-05-11T08:22:13-04:00
FIND_LLVM_PROG: Recognize llvm suffix used by FreeBSD, ie llc10.
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8500206e by ARATA Mizuki at 2022-05-11T08:22:57-04:00
Make floating-point abs IEEE 754 compliant
The old code used by via-C backend didn't handle the sign bit of NaN.
See #21043.
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4a4c77ed by Alan Zimmerman at 2022-05-11T08:23:33-04:00
EPA: do statement with leading semicolon has wrong anchor
The code
do; a <- doAsync; b
Generated an incorrect Anchor for the statement list that starts after
the first semicolon.
This commit fixes it.
Closes #20256
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e3ca8dac by Simon Peyton Jones at 2022-05-11T08:24:08-04:00
Specialiser: saturate DFuns correctly
Ticket #21489 showed that the saturation mechanism for
DFuns (see Note Specialising DFuns) should use both
UnspecType and UnspecArg.
We weren't doing that; but this MR fixes that problem.
No test case because it's hard to tickle, but it showed up in
Gergo's work with GHC-as-a-library.
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fcc7dc4c by Ben Gamari at 2022-05-11T20:05:41-04:00
gitlab-ci: Check for dynamic msys2 dependencies
Both #20878 and #21196 were caused by unwanted dynamic dependencies
being introduced by boot libraries. Ensure that we catch this in CI by
attempting to run GHC in an environment with a minimal PATH.
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3c998f0d by Matthew Pickering at 2022-05-11T20:06:16-04:00
Add back Debian9 CI jobs
We still build Deb9 bindists for now due to Ubuntu 18 and Linux Mint 19
not being at EOL until April 2023 and they still need tinfo5.
Fixes #21469
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dea9a3d9 by Ben Gamari at 2022-05-11T20:06:51-04:00
rts: Drop setExecutable
Since f6e366c058b136f0789a42222b8189510a3693d1 setExecutable has been
dead code. Drop it.
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32cdf62d by Simon Peyton Jones at 2022-05-11T20:07:27-04:00
Add a missing guard in GHC.HsToCore.Utils.is_flat_prod_pat
This missing guard gave rise to #21519.
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2c00a8d0 by Matthew Pickering at 2022-05-11T20:08:02-04:00
Add mention of -hi to RTS --help
Fixes #21546
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a2dcad4e by Andre Marianiello at 2022-05-12T02:15:48+00:00
Decouple dynflags in Cmm parser (related to #17957)
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3a022baa by Andre Marianiello at 2022-05-12T02:15:48+00:00
Remove Module argument from initCmmParserConfig
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2fc8d76b by Andre Marianiello at 2022-05-12T02:15:48+00:00
Move CmmParserConfig and PDConfig into GHC.Cmm.Parser.Config
- - - - -
b8c5ffab by Andre Marianiello at 2022-05-12T18:13:55-04:00
Decouple dynflags in GHC.Core.Opt.Arity (related to #17957)
Metric Decrease:
T16875
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3bf938b6 by sheaf at 2022-05-12T18:14:34-04:00
Update extending_ghc for TcPlugin changes
The documentation still mentioned Derived constraints and
an outdated datatype TcPluginResult.
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668a9ef4 by jackohughes at 2022-05-13T12:10:34-04:00
Fix printing of brackets in multiplicities (#20315)
Change mulArrow to allow for printing of correct application precedence
where necessary and update callers of mulArrow to reflect this.
As part of this, move mulArrow from GHC/Utils/Outputtable to GHC/Iface/Type.
Fixes #20315
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30b8b7f1 by Ben Gamari at 2022-05-13T12:11:09-04:00
rts: Add debug output on ocResolve failure
This makes it easier to see how resolution failures nest.
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53b3fa1c by Ben Gamari at 2022-05-13T12:11:09-04:00
rts/PEi386: Fix handling of weak symbols
Previously we would flag the symbol as weak but failed
to set its address, which must be computed from an "auxiliary"
symbol entry the follows the weak symbol.
Fixes #21556.
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5678f017 by Ben Gamari at 2022-05-13T12:11:09-04:00
testsuite: Add tests for #21556
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49af0e52 by Ben Gamari at 2022-05-13T22:23:26-04:00
Re-export augment and build from GHC.List
Resolves https://gitlab.haskell.org/ghc/ghc/-/issues/19127
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aed356e1 by Simon Peyton Jones at 2022-05-13T22:24:02-04:00
Comments only around HsWrapper
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27b90409 by Ben Gamari at 2022-05-16T08:30:44-04:00
hadrian: Introduce linting flavour transformer (+lint)
The linting flavour enables -dlint uniformly across anything build by
the stage1 compiler.
-dcmm-lint is not currently enabled because it fails on i386 (see #21563)
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3f316776 by Matthew Pickering at 2022-05-16T08:30:44-04:00
hadrian: Uniformly enable -dlint with enableLinting transformer
This fixes some bugs where
* -dcore-lint was being passed when building stage1 libraries with the
boot compiler
* -dcore-lint was not being passed when building executables.
Fixes #20135
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3d74cfca by Andreas Klebinger at 2022-05-16T08:31:20-04:00
Make closure macros EXTERN_INLINE to make debugging easier
Implements #21424.
The RTS macros get_itbl and friends are extremely helpful during debugging.
However only a select few of those were available in the compiled RTS as actual symbols
as the rest were INLINE macros.
This commit marks all of them as EXTERN_INLINE. This will still inline them at use sites
but allow us to use their compiled counterparts during debugging.
This allows us to use things like `p get_fun_itbl(ptr)` in the gdb shell
since `get_fun_itbl` will now be available as symbol!
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93153aab by Matthew Pickering at 2022-05-16T08:31:55-04:00
packaging: Introduce CI job for generating hackage documentation
This adds a CI job (hackage-doc-tarball) which generates the necessary
tarballs for uploading libraries and documentation to hackage. The
release script knows to download this folder and the upload script will
also upload the release to hackage as part of the release.
The `ghc_upload_libs` script is moved from ghc-utils into .gitlab/ghc_upload_libs
There are two modes, preparation and upload.
* The `prepare` mode takes a link to a bindist and creates a folder containing the
source and doc tarballs ready to upload to hackage.
* The `upload` mode takes the folder created by prepare and performs the upload to
hackage.
Fixes #21493
Related to #21512
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65d31d05 by Simon Peyton Jones at 2022-05-16T15:32:50-04:00
Add arity to the INLINE pragmas for pattern synonyms
The lack of INLNE arity was exposed by #21531. The fix is
simple enough, if a bit clumsy.
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43c018aa by Krzysztof Gogolewski at 2022-05-16T15:33:25-04:00
Misc cleanup
- Remove groupWithName (unused)
- Use the RuntimeRepType synonym where possible
- Replace getUniqueM + mkSysLocalOrCoVar with mkSysLocalOrCoVarM
No functional changes.
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8dfea078 by Pavol Vargovcik at 2022-05-16T15:34:04-04:00
TcPlugin: access to irreducible givens + fix passed ev_binds_var
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fb579e15 by Ben Gamari at 2022-05-17T00:25:02-04:00
driver: Introduce pgmcxx
Here we introduce proper support for compilation of C++ objects. This
includes:
* logic in `configure` to detect the C++ toolchain and propagating this
information into the `settings` file
* logic in the driver to use the C++ toolchain when compiling C++
sources
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43628ed4 by Ben Gamari at 2022-05-17T00:25:02-04:00
testsuite: Build T20918 with HC, not CXX
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0ef249aa by Ben Gamari at 2022-05-17T00:25:02-04:00
Introduce package to capture dependency on C++ stdlib
Here we introduce a new "virtual" package into the initial package
database, `system-cxx-std-lib`. This gives users a convenient, platform
agnostic way to link against C++ libraries, addressing #20010.
Fixes #20010.
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03efe283 by Ben Gamari at 2022-05-17T00:25:02-04:00
testsuite: Add tests for system-cxx-std-lib package
Test that we can successfully link against C++ code both in GHCi and
batch compilation.
See #20010
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5f6527e0 by nineonine at 2022-05-17T00:25:38-04:00
OverloadedRecordFields: mention parent name in 'ambiguous occurrence' error for better disambiguation (#17420)
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eccdb208 by Simon Peyton Jones at 2022-05-17T07:16:39-04:00
Adjust flags for pprTrace
We were using defaultSDocContext for pprTrace, which suppresses
lots of useful infomation. This small MR adds
GHC.Utils.Outputable.traceSDocContext
and uses it for pprTrace and pprTraceUserWarning.
traceSDocContext is a global, and hence not influenced by flags,
but that seems unavoidable. But I made the sdocPprDebug bit
controlled by unsafeHasPprDebug, since we have the latter for
exactly this purpose.
Fixes #21569
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d2284c4c by Simon Peyton Jones at 2022-05-17T07:17:15-04:00
Fix bad interaction between withDict and the Specialiser
This MR fixes a bad bug, where the withDict was inlined too
vigorously, which in turn made the type-class Specialiser generate
a bogus specialisation, because it saw the same overloaded function
applied to two /different/ dictionaries.
Solution: inline `withDict` later. See (WD8) of Note [withDict]
in GHC.HsToCore.Expr
See #21575, which is fixed by this change.
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70f52443 by Matthew Pickering at 2022-05-17T07:17:50-04:00
Bump time submodule to 1.12.2
This bumps the time submodule to the 1.12.2 release.
Fixes #21571
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2343457d by Vladislav Zavialov at 2022-05-17T07:18:26-04:00
Remove unused test files (#21582)
Those files were moved to the perf/ subtree in 11c9a469, and then
accidentally reintroduced in 680ef2c8.
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cb52b4ae by Ben Gamari at 2022-05-17T16:00:14-04:00
CafAnal: Improve code clarity
Here we implement a few measures to improve the clarity of the CAF
analysis implementation. Specifically:
* Use CafInfo instead of Bool since the former is more descriptive
* Rename CAFLabel to CAFfyLabel, since not all CAFfyLabels are in fact
CAFs
* Add numerous comments
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b048a9f4 by Ben Gamari at 2022-05-17T16:00:14-04:00
codeGen: Ensure that static datacon apps are included in SRTs
When generating an SRT for a recursive group, GHC.Cmm.Info.Build.oneSRT
filters out recursive references, as described in Note [recursive SRTs].
However, doing so for static functions would be unsound, for the reason
described in Note [Invalid optimisation: shortcutting].
However, the same argument applies to static data constructor
applications, as we discovered in #20959. Fix this by ensuring that
static data constructor applications are included in recursive SRTs.
The approach here is not entirely satisfactory, but it is a starting
point.
Fixes #20959.
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0e2d16eb by Matthew Pickering at 2022-05-17T16:00:50-04:00
Add test for #21558
This is now fixed on master and 9.2 branch.
Closes #21558
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ef3c8d9e by Sylvain Henry at 2022-05-17T20:22:02-04:00
Don't store LlvmConfig into DynFlags
LlvmConfig contains information read from llvm-passes and llvm-targets
files in GHC's top directory. Reading these files is done only when
needed (i.e. when the LLVM backend is used) and cached for the whole
compiler session. This patch changes the way this is done:
- Split LlvmConfig into LlvmConfig and LlvmConfigCache
- Store LlvmConfigCache in HscEnv instead of DynFlags: there is no
good reason to store it in DynFlags. As it is fixed per session, we
store it in the session state instead (HscEnv).
- Initializing LlvmConfigCache required some changes to driver functions
such as newHscEnv. I've used the opportunity to untangle initHscEnv
from initGhcMonad (in top-level GHC module) and to move it to
GHC.Driver.Main, close to newHscEnv.
- I've also made `cmmPipeline` independent of HscEnv in order to remove
the call to newHscEnv in regalloc_unit_tests.
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828fbd8a by Andreas Klebinger at 2022-05-17T20:22:38-04:00
Give all EXTERN_INLINE closure macros prototypes
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cfc8e2e2 by Ben Gamari at 2022-05-19T04:57:51-04:00
base: Introduce [sg]etFinalizerExceptionHandler
This introduces a global hook which is called when an exception is
thrown during finalization.
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372cf730 by Ben Gamari at 2022-05-19T04:57:51-04:00
base: Throw exceptions raised while closing finalized Handles
Fixes #21336.
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3dd2f944 by Ben Gamari at 2022-05-19T04:57:51-04:00
testsuite: Add tests for #21336
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297156e0 by Matthew Pickering at 2022-05-19T04:58:27-04:00
Add release flavour and use it for the release jobs
The release flavour is essentially the same as the perf flavour
currently but also enables `-haddock`. I have hopefully updated all the
relevant places where the `-perf` flavour was hardcoded.
Fixes #21486
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a05b6293 by Matthew Pickering at 2022-05-19T04:58:27-04:00
ci: Don't build sphinx documentation on centos
The centos docker image lacks the sphinx builder so we disable building
sphinx docs for these jobs.
Fixes #21580
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209d7c69 by Matthew Pickering at 2022-05-19T04:58:27-04:00
ci: Use correct syntax when args list is empty
This seems to fail on the ancient version of bash present on CentOS
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02d16334 by Matthew Pickering at 2022-05-19T04:59:03-04:00
hadrian: Don't attempt to build dynamic profiling libraries
We only support building static profiling libraries, the transformer was
requesting things like a dynamic, threaded, debug, profiling RTS, which
we have never produced nor distributed.
Fixes #21567
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35bdab1c by Ben Gamari at 2022-05-19T04:59:39-04:00
configure: Check CC_STAGE0 for --target support
We previously only checked the stage 1/2 compiler
for --target support. We got away with this for quite a while but it
eventually caught up with us in #21579, where `bytestring`'s new NEON
implementation was unbuildable on Darwin due to Rosetta's seemingly
random logic for determining which executable image to execute. This
lead to a confusing failure to build `bytestring`'s cbits, when `clang`
tried to compile NEON builtins while targetting x86-64.
Fix this by checking CC_STAGE0 for --target support.
Fixes #21579.
- - - - -
0ccca94b by Norman Ramsey at 2022-05-20T05:32:32-04:00
add dominator analysis of `CmmGraph`
This commit adds module `GHC.Cmm.Dominators`, which provides a wrapper
around two existing algorithms in GHC: the Lengauer-Tarjan dominator
analysis from the X86 back end and the reverse postorder ordering from
the Cmm Dataflow framework. Issue #20726 proposes that we evaluate
some alternatives for dominator analysis, but for the time being, the
best path forward is simply to use the existing analysis on
`CmmGraph`s.
This commit addresses a bullet in #21200.
- - - - -
54f0b578 by Norman Ramsey at 2022-05-20T05:32:32-04:00
add dominator-tree function
- - - - -
05ed917b by Norman Ramsey at 2022-05-20T05:32:32-04:00
add HasDebugCallStack; remove unneeded extensions
- - - - -
0b848136 by Andreas Klebinger at 2022-05-20T05:32:32-04:00
document fields of `DominatorSet`
- - - - -
8a26e8d6 by Ben Gamari at 2022-05-20T05:33:08-04:00
nonmoving: Fix documentation of GC statistics fields
These were previously incorrect.
Fixes #21553.
- - - - -
c1e24e61 by Matthew Pickering at 2022-05-20T05:33:44-04:00
Remove pprTrace from pushCoercionIntoLambda (#21555)
This firstly caused spurious output to be emitted (as evidenced by
#21555) but even worse caused a massive coercion to be attempted to be
printed (> 200k terms) which would invariably eats up all the memory of
your computer.
The good news is that removing this trace allows the program to compile
to completion, the bad news is that the program exhibits a core lint
error (on 9.0.2) but not any other releases it seems.
Fixes #21577 and #21555
- - - - -
a36d12ee by Zubin Duggal at 2022-05-20T10:44:35-04:00
docs: Fix LlvmVersion in manpage (#21280)
- - - - -
36b8a57c by Matthew Pickering at 2022-05-20T10:45:10-04:00
validate: Use $make rather than make
In the validate script we are careful to use the $make variable as this
stores whether we are using gmake, make, quiet mode etc. There was just
this one place where we failed to use it.
Fixes #21598
- - - - -
4aa3c5bd by Norman Ramsey at 2022-05-21T03:11:04+00:00
Change `Backend` type and remove direct dependencies
With this change, `Backend` becomes an abstract type
(there are no more exposed value constructors).
Decisions that were formerly made by asking "is the
current back end equal to (or different from) this named value
constructor?" are now made by interrogating the back end about
its properties, which are functions exported by `GHC.Driver.Backend`.
There is a description of how to migrate code using `Backend` in the
user guide.
Clients using the GHC API can find a backdoor to access the Backend
datatype in GHC.Driver.Backend.Internal.
Bumps haddock submodule.
Fixes #20927
- - - - -
ecf5f363 by Julian Ospald at 2022-05-21T12:51:16-04:00
Respect DESTDIR in hadrian bindist Makefile, fixes #19646
- - - - -
7edd991e by Julian Ospald at 2022-05-21T12:51:16-04:00
Test DESTDIR in test_hadrian()
- - - - -
ea895b94 by Matthew Pickering at 2022-05-22T21:57:47-04:00
Consider the stage of typeable evidence when checking stage restriction
We were considering all Typeable evidence to be "BuiltinInstance"s which
meant the stage restriction was going unchecked. In-fact, typeable has
evidence and so we need to apply the stage restriction.
This is
complicated by the fact we don't generate typeable evidence and the
corresponding DFunIds until after typechecking is concluded so we
introcue a new `InstanceWhat` constructor, BuiltinTypeableInstance which
records whether the evidence is going to be local or not.
Fixes #21547
- - - - -
ffbe28e5 by Dominik Peteler at 2022-05-22T21:58:23-04:00
Modularize GHC.Core.Opt.LiberateCase
Progress towards #17957
- - - - -
bc723ac2 by Simon Peyton Jones at 2022-05-23T17:09:34+01:00
Improve FloatOut and SpecConstr
This patch addresses a relatively obscure situation that arose
when chasing perf regressions in !7847, which itself is fixing
It does two things:
* SpecConstr can specialise on ($df d1 d2) dictionary arguments
* FloatOut no longer checks argument strictness
See Note [Specialising on dictionaries] in GHC.Core.Opt.SpecConstr.
A test case is difficult to construct, but it makes a big difference
in nofib/real/eff/VSM, at least when we have the patch for #21286
installed. (The latter stops worker/wrapper for dictionary arguments).
There is a spectacular, but slightly illusory, improvement in
runtime perf on T15426. I have documented the specifics in
T15426 itself.
Metric Decrease:
T15426
- - - - -
1a4195b0 by John Ericson at 2022-05-23T17:33:59-04:00
Make debug a `Bool` not an `Int` in `StgToCmmConfig`
We don't need any more resolution than this.
Rename the field to `stgToCmmEmitDebugInfo` to indicate it is no longer
conveying any "level" information.
- - - - -
e9fff12b by Alan Zimmerman at 2022-05-23T21:04:49-04:00
EPA : Remove duplicate comments in DataFamInstD
The code
data instance Method PGMigration = MigrationQuery Query
-- ^ Run a query against the database
| MigrationCode (Connection -> IO (Either String ()))
-- ^ Run any arbitrary IO code
Resulted in two instances of the "-- ^ Run a query against the database"
comment appearing in the Exact Print Annotations when it was parsed.
Ensure only one is kept.
Closes #20239
- - - - -
e2520df3 by Alan Zimmerman at 2022-05-23T21:05:27-04:00
EPA: Comment Order Reversed
Make sure comments captured in the exact print annotations are in
order of increasing location
Closes #20718
- - - - -
4b45fd72 by Teo Camarasu at 2022-05-24T10:49:13-04:00
Add test for T21455
- - - - -
e2cd1d43 by Teo Camarasu at 2022-05-24T10:49:13-04:00
Allow passing -po outside profiling way
Resolves #21455
- - - - -
3b8c413a by Greg Steuck at 2022-05-24T10:49:52-04:00
Fix haddock_*_perf tests on non-GNU-grep systems
Using regexp pattern requires `egrep` and straight up `+`. The
haddock_parser_perf and haddock_renamer_perf tests now pass on
OpenBSD. They previously incorrectly parsed the files and awk
complained about invalid syntax.
- - - - -
1db877a3 by Ben Gamari at 2022-05-24T10:50:28-04:00
hadrian/bindist: Drop redundant include of install.mk
`install.mk` is already included by `config.mk`. Moreover, `install.mk`
depends upon `config.mk` to set `RelocatableBuild`, making this first
include incorrect.
- - - - -
f485d267 by Greg Steuck at 2022-05-24T10:51:08-04:00
Remove -z wxneeded for OpenBSD
With all the recent W^X fixes in the loader this workaround is not
necessary any longer. I verified that the only tests failing for me on
OpenBSD 7.1-current are the same (libc++ related) before and after
this commit (with --fast).
- - - - -
7c51177d by Andreas Klebinger at 2022-05-24T22:13:19-04:00
Use UnionListsOrd instead of UnionLists in most places.
This should get rid of most, if not all "Overlong lists" errors and fix #20016
- - - - -
81b3741f by Andreas Klebinger at 2022-05-24T22:13:55-04:00
Fix #21563 by using Word64 for 64bit shift code.
We use the 64bit shifts only on 64bit platforms. But we
compile the code always so compiling it on 32bit caused a
lint error. So use Word64 instead.
- - - - -
2c25fff6 by Zubin Duggal at 2022-05-24T22:14:30-04:00
Fix compilation with -haddock on GHC <= 8.10
-haddock on GHC < 9.0 is quite fragile and can result in obtuse parse errors
when it encounters invalid haddock syntax.
This has started to affect users since 297156e0b8053a28a860e7a18e1816207a59547b
enabled -haddock by default on many flavours.
Furthermore, since we don't test bootstrapping with 8.10 on CI, this problem
managed to slip throught the cracks.
- - - - -
cfb9faff by sheaf at 2022-05-24T22:15:12-04:00
Hadrian: don't add "lib" for relocatable builds
The conditional in hadrian/bindist/Makefile depended on the target OS,
but it makes more sense to use whether we are using a relocatable build.
(Currently this only gets set to true on Windows, but this ensures
that the logic stays correctly coupled.)
- - - - -
9973c016 by Andre Marianiello at 2022-05-25T01:36:09-04:00
Remove HscEnv from GHC.HsToCore.Usage (related to #17957)
Metric Decrease:
T16875
- - - - -
2ff18e39 by sheaf at 2022-05-25T01:36:48-04:00
SimpleOpt: beta-reduce through casts
The simple optimiser would sometimes fail to
beta-reduce a lambda when there were casts
in between the lambda and its arguments.
This can cause problems because we rely on
representation-polymorphic lambdas getting
beta-reduced away (for example, those
that arise from newtype constructors with
representation-polymorphic arguments, with
UnliftedNewtypes).
- - - - -
e74fc066 by CarrieMY at 2022-05-25T16:43:03+02:00
Desugar RecordUpd in `tcExpr`
This patch typechecks record updates by desugaring them inside
the typechecker using the HsExpansion mechanism, and then typechecking
this desugared result.
Example:
data T p q = T1 { x :: Int, y :: Bool, z :: Char }
| T2 { v :: Char }
| T3 { x :: Int }
| T4 { p :: Float, y :: Bool, x :: Int }
| T5
The record update `e { x=e1, y=e2 }` desugars as follows
e { x=e1, y=e2 }
===>
let { x' = e1; y' = e2 } in
case e of
T1 _ _ z -> T1 x' y' z
T4 p _ _ -> T4 p y' x'
The desugared expression is put into an HsExpansion, and we typecheck
that.
The full details are given in Note [Record Updates] in GHC.Tc.Gen.Expr.
Fixes #2595 #3632 #10808 #10856 #16501 #18311 #18802 #21158 #21289
Updates haddock submodule
- - - - -
2b8bdab8 by Eric Lindblad at 2022-05-26T03:21:58-04:00
update README
- - - - -
3d7e7e84 by BinderDavid at 2022-05-26T03:22:38-04:00
Replace dead link in Haddock documentation of Control.Monad.Fail (fixes #21602)
- - - - -
ee61c7f9 by John Ericson at 2022-05-26T03:23:13-04:00
Add Haddocks for `WwOpts`
- - - - -
da5ccf0e by Dominik Peteler at 2022-05-26T03:23:13-04:00
Avoid global compiler state for `GHC.Core.Opt.WorkWrap`
Progress towards #17957
- - - - -
3bd975b4 by sheaf at 2022-05-26T03:23:52-04:00
Optimiser: avoid introducing bad rep-poly
The functions `pushCoValArg` and `pushCoercionIntoLambda` could
introduce bad representation-polymorphism. Example:
type RR :: RuntimeRep
type family RR where { RR = IntRep }
type F :: TYPE RR
type family F where { F = Int# }
co = GRefl F (TYPE RR[0])
:: (F :: TYPE RR)
~# (F |> TYPE RR[0] :: TYPE IntRep)
f :: F -> ()
`pushCoValArg` would transform the unproblematic application
(f |> (co -> <()>)) (arg :: F |> TYPE RR[0])
into an application in which the argument does not have a fixed
`RuntimeRep`:
f ((arg |> sym co) :: (F :: TYPE RR))
- - - - -
b22979fb by Fraser Tweedale at 2022-05-26T06:14:51-04:00
executablePath test: fix file extension treatment
The executablePath test strips the file extension (if any) when
comparing the query result with the expected value. This is to
handle platforms where GHC adds a file extension to the output
program file (e.g. .exe on Windows).
After the initial check, the file gets deleted (if supported).
However, it tries to delete the *stripped* filename, which is
incorrect. The test currently passes only because Windows does not
allow deleting the program while any process created from it is
alive.
Make the test program correct in general by deleting the
*non-stripped* executable filename.
- - - - -
afde4276 by Fraser Tweedale at 2022-05-26T06:14:51-04:00
fix executablePath test for NetBSD
executablePath support for NetBSD was added in
a172be07e3dce758a2325104a3a37fc8b1d20c9c, but the test was not
updated.
Update the test so that it works for NetBSD. This requires handling
some quirks:
- The result of getExecutablePath could include "./" segments.
Therefore use System.FilePath.equalFilePath to compare paths.
- The sysctl(2) call returns the original executable name even after
it was deleted. Add `canQueryAfterDelete :: [FilePath]` and
adjust expectations for the post-delete query accordingly.
Also add a note to the `executablePath` haddock to advise that
NetBSD behaves differently from other OSes when the file has been
deleted.
Also accept a decrease in memory usage for T16875. On Windows, the
metric is -2.2% of baseline, just outside the allowed ±2%. I don't
see how this commit could have influenced this metric, so I suppose
it's something in the CI environment.
Metric Decrease:
T16875
- - - - -
d0e4355a by John Ericson at 2022-05-26T06:15:30-04:00
Factor out `initArityOps` to `GHC.Driver.Config.*` module
We want `DynFlags` only mentioned in `GHC.Driver`.
- - - - -
44bb7111 by romes at 2022-05-26T16:27:57+00:00
TTG: Move MatchGroup Origin field and MatchGroupTc to GHC.Hs
- - - - -
88e58600 by sheaf at 2022-05-26T17:38:43-04:00
Add tests for eta-expansion of data constructors
This patch adds several tests relating to the eta-expansion of
data constructors, including UnliftedNewtypes and DataTypeContexts.
- - - - -
d87530bb by Richard Eisenberg at 2022-05-26T23:20:14-04:00
Generalize breakTyVarCycle to work with TyFamLHS
The function breakTyVarCycle_maybe has been installed
in a dark corner of GHC to catch some gremlins (a.k.a.
occurs-check failures) who lurk
there. But it previously only caught gremlins of the
form (a ~ ... F a ...), where some of our intrepid users
have spawned gremlins of the form (G a ~ ... F (G a) ...).
This commit improves breakTyVarCycle_maybe (and renames
it to breakTyEqCycle_maybe) to catch the new gremlins.
Happily, the change is remarkably small.
The gory details are in Note [Type equality cycles].
Test cases: typecheck/should_compile/{T21515,T21473}.
- - - - -
ed37027f by Hécate Moonlight at 2022-05-26T23:20:52-04:00
[base] Fix the links in the Data.Data module
fix #21658
fix #21657
fix #21657
- - - - -
3bd7d5d6 by Krzysztof Gogolewski at 2022-05-27T16:44:48+02:00
Use a class to check validity of withDict
This moves handling of the magic 'withDict' function from the desugarer
to the typechecker. Details in Note [withDict].
I've extracted a part of T16646Fail to a separate file T16646Fail2,
because the new error in 'reify' hides the errors from 'f' and 'g'.
WithDict now works with casts, this fixes #21328.
Part of #19915
- - - - -
b54f6c4f by sheaf at 2022-05-28T21:00:09-04:00
Fix FreeVars computation for mdo
Commit acb188e0 introduced a regression in the computation of free
variables in mdo statements, as the logic in
GHC.Rename.Expr.segmentRecStmts was slightly different depending on
whether the recursive do block corresponded to an mdo statement or
a rec statment.
This patch restores the previous computation for mdo blocks.
Fixes #21654
- - - - -
0704295c by Matthew Pickering at 2022-05-28T21:00:45-04:00
T16875: Stabilise (temporarily) by increasing acceptance threshold
The theory is that on windows there is some difference in the
environment between pipelines on master and merge requests which affects
all tests equally but because T16875 barely allocates anything it is the
test which is affected the most.
See #21557
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6341c8ed by Matthew Pickering at 2022-05-28T21:01:20-04:00
make: Fix make maintainer-clean deleting a file tracked by source control
Fixes #21659
- - - - -
fbf2f254 by Andrew Lelechenko at 2022-05-28T21:01:58-04:00
Expand documentation of hIsTerminalDevice
- - - - -
0092c67c by Teo Camarasu at 2022-05-29T12:25:39+00:00
export IsList from GHC.IsList
it is still re-exported from GHC.Exts
- - - - -
91396327 by Sylvain Henry at 2022-05-30T09:40:55-04:00
MachO linker: fix handling of ARM64_RELOC_SUBTRACTOR
ARM64_RELOC_SUBTRACTOR relocations are paired with an
AMR64_RELOC_UNSIGNED relocation to implement: addend + sym1 - sym2
The linker was doing it in two steps, basically:
*addend <- *addend - sym2
*addend <- *addend + sym1
The first operation was likely to overflow. For example when the
relocation target was 32-bit and both sym1/sym2 were 64-bit addresses.
With the small memory model, (sym1-sym2) would fit in 32 bits but
(*addend-sym2) may not.
Now the linker does it in one step:
*addend <- *addend + sym1 - sym2
- - - - -
acc26806 by Sylvain Henry at 2022-05-30T09:40:55-04:00
Some fixes to SRT documentation
- reordered the 3 SRT implementation cases from the most general to the
most specific one:
USE_SRT_POINTER -> USE_SRT_OFFSET -> USE_INLINE_SRT_FIELD
- added requirements for each
- found and documented a confusion about "SRT inlining" not supported
with MachO. (It is fixed in the following commit)
- - - - -
5878f439 by Sylvain Henry at 2022-05-30T09:40:55-04:00
Enable USE_INLINE_SRT_FIELD on ARM64
It was previously disabled because of:
- a confusion about "SRT inlining" (see removed comment in this commit)
- a linker bug (overflow) in the handling of ARM64_RELOC_SUBTRACTOR
relocation: fixed by a previous commit.
- - - - -
59bd6159 by Matthew Pickering at 2022-05-30T09:41:39-04:00
ci: Make sure to exit promptly if `make install` fails.
Due to the vageries of bash, you have to explicitly handle the failure
and exit when in a function.
This failed to exit promptly when !8247 was failing.
See #21358 for the general issue
- - - - -
5a5a28da by Sylvain Henry at 2022-05-30T09:42:23-04:00
Split GHC.HsToCore.Foreign.Decl
This is preliminary work for JavaScript support. It's better to put the
code handling the desugaring of Prim, C and JavaScript declarations into
separate modules.
- - - - -
6f5ff4fa by Sylvain Henry at 2022-05-30T09:43:05-04:00
Bump hadrian to LTS-19.8 (GHC 9.0.2)
- - - - -
f2e70707 by Sylvain Henry at 2022-05-30T09:43:05-04:00
Hadrian: remove unused code
- - - - -
2f215b9f by Simon Peyton Jones at 2022-05-30T13:44:14-04:00
Eta reduction with casted function
We want to be able to eta-reduce
\x y. ((f x) |> co) y
by pushing 'co' inwards. A very small change accommodates this
See Note [Eta reduction with casted function]
- - - - -
f4f6a87a by Simon Peyton Jones at 2022-05-30T13:44:14-04:00
Do arity trimming at bindings, rather than in exprArity
Sometimes there are very large casts, and coercionRKind
can be slow.
- - - - -
610a2b83 by Simon Peyton Jones at 2022-05-30T13:44:14-04:00
Make findRhsArity take RecFlag
This avoids a fixpoint iteration for the common case of
non-recursive bindings.
- - - - -
80ba50c7 by Simon Peyton Jones at 2022-05-30T13:44:14-04:00
Comments and white space
- - - - -
0079171b by Simon Peyton Jones at 2022-05-30T13:44:14-04:00
Make PrimOpId record levity
This patch concerns #20155, part (1)
The general idea is that since primops have curried bindings
(currently in PrimOpWrappers.hs) we don't need to eta-expand
them. But we /do/ need to eta-expand the levity-polymorphic ones,
because they /don't/ have bindings.
This patch makes a start in that direction, by identifying the
levity-polymophic primops in the PrimOpId IdDetails constructor.
For the moment, I'm still eta-expanding all primops (by saying
that hasNoBinding returns True for all primops), because of the
bug reported in #20155. But I hope that before long we can
tidy that up too, and remove the TEMPORARILY stuff in hasNoBinding.
- - - - -
6656f016 by Simon Peyton Jones at 2022-05-30T13:44:14-04:00
A bunch of changes related to eta reduction
This is a large collection of changes all relating to eta
reduction, originally triggered by #18993, but there followed
a long saga.
Specifics:
* Move state-hack stuff from GHC.Types.Id (where it never belonged)
to GHC.Core.Opt.Arity (which seems much more appropriate).
* Add a crucial mkCast in the Cast case of
GHC.Core.Opt.Arity.eta_expand; helps with T18223
* Add clarifying notes about eta-reducing to PAPs.
See Note [Do not eta reduce PAPs]
* I moved tryEtaReduce from GHC.Core.Utils to GHC.Core.Opt.Arity,
where it properly belongs. See Note [Eta reduce PAPs]
* In GHC.Core.Opt.Simplify.Utils.tryEtaExpandRhs, pull out the code for
when eta-expansion is wanted, to make wantEtaExpansion, and all that
same function in GHC.Core.Opt.Simplify.simplStableUnfolding. It was
previously inconsistent, but it's doing the same thing.
* I did a substantial refactor of ArityType; see Note [ArityType].
This allowed me to do away with the somewhat mysterious takeOneShots;
more generally it allows arityType to describe the function, leaving
its clients to decide how to use that information.
I made ArityType abstract, so that clients have to use functions
to access it.
* Make GHC.Core.Opt.Simplify.Utils.rebuildLam (was stupidly called
mkLam before) aware of the floats that the simplifier builds up, so
that it can still do eta-reduction even if there are some floats.
(Previously that would not happen.) That means passing the floats
to rebuildLam, and an extra check when eta-reducting (etaFloatOk).
* In GHC.Core.Opt.Simplify.Utils.tryEtaExpandRhs, make use of call-info
in the idDemandInfo of the binder, as well as the CallArity info. The
occurrence analyser did this but we were failing to take advantage here.
In the end I moved the heavy lifting to GHC.Core.Opt.Arity.findRhsArity;
see Note [Combining arityType with demand info], and functions
idDemandOneShots and combineWithDemandOneShots.
(These changes partly drove my refactoring of ArityType.)
* In GHC.Core.Opt.Arity.findRhsArity
* I'm now taking account of the demand on the binder to give
extra one-shot info. E.g. if the fn is always called with two
args, we can give better one-shot info on the binders
than if we just look at the RHS.
* Don't do any fixpointing in the non-recursive
case -- simple short cut.
* Trim arity inside the loop. See Note [Trim arity inside the loop]
* Make SimpleOpt respect the eta-reduction flag
(Some associated refactoring here.)
* I made the CallCtxt which the Simplifier uses distinguish between
recursive and non-recursive right-hand sides.
data CallCtxt = ... | RhsCtxt RecFlag | ...
It affects only one thing:
- We call an RHS context interesting only if it is non-recursive
see Note [RHS of lets] in GHC.Core.Unfold
* Remove eta-reduction in GHC.CoreToStg.Prep, a welcome simplification.
See Note [No eta reduction needed in rhsToBody] in GHC.CoreToStg.Prep.
Other incidental changes
* Fix a fairly long-standing outright bug in the ApplyToVal case of
GHC.Core.Opt.Simplify.mkDupableContWithDmds. I was failing to take the
tail of 'dmds' in the recursive call, which meant the demands were All
Wrong. I have no idea why this has not caused problems before now.
* Delete dead function GHC.Core.Opt.Simplify.Utils.contIsRhsOrArg
Metrics: compile_time/bytes allocated
Test Metric Baseline New value Change
---------------------------------------------------------------------------------------
MultiLayerModulesTH_OneShot(normal) ghc/alloc 2,743,297,692 2,619,762,992 -4.5% GOOD
T18223(normal) ghc/alloc 1,103,161,360 972,415,992 -11.9% GOOD
T3064(normal) ghc/alloc 201,222,500 184,085,360 -8.5% GOOD
T8095(normal) ghc/alloc 3,216,292,528 3,254,416,960 +1.2%
T9630(normal) ghc/alloc 1,514,131,032 1,557,719,312 +2.9% BAD
parsing001(normal) ghc/alloc 530,409,812 525,077,696 -1.0%
geo. mean -0.1%
Nofib:
Program Size Allocs Runtime Elapsed TotalMem
--------------------------------------------------------------------------------
banner +0.0% +0.4% -8.9% -8.7% 0.0%
exact-reals +0.0% -7.4% -36.3% -37.4% 0.0%
fannkuch-redux +0.0% -0.1% -1.0% -1.0% 0.0%
fft2 -0.1% -0.2% -17.8% -19.2% 0.0%
fluid +0.0% -1.3% -2.1% -2.1% 0.0%
gg -0.0% +2.2% -0.2% -0.1% 0.0%
spectral-norm +0.1% -0.2% 0.0% 0.0% 0.0%
tak +0.0% -0.3% -9.8% -9.8% 0.0%
x2n1 +0.0% -0.2% -3.2% -3.2% 0.0%
--------------------------------------------------------------------------------
Min -3.5% -7.4% -58.7% -59.9% 0.0%
Max +0.1% +2.2% +32.9% +32.9% 0.0%
Geometric Mean -0.0% -0.1% -14.2% -14.8% -0.0%
Metric Decrease:
MultiLayerModulesTH_OneShot
T18223
T3064
T15185
T14766
Metric Increase:
T9630
- - - - -
cac8c7bb by Matthew Pickering at 2022-05-30T13:44:50-04:00
hadrian: Fix building from source-dist without alex/happy
This fixes two bugs which were adding dependencies on alex/happy when
building from a source dist.
* When we try to pass `--with-alex` and `--with-happy` to cabal when
configuring but the builders are not set. This is fixed by making them
optional.
* When we configure, cabal requires alex/happy because of the
build-tool-depends fields. These are now made optional with a cabal
flag (build-tool-depends) for compiler/hpc-bin/genprimopcode.
Fixes #21627
- - - - -
a96dccfe by Matthew Pickering at 2022-05-30T13:44:50-04:00
ci: Test the bootstrap without ALEX/HAPPY on path
- - - - -
0e5bb3a8 by Matthew Pickering at 2022-05-30T13:44:50-04:00
ci: Test bootstrapping in release jobs
- - - - -
d8901469 by Matthew Pickering at 2022-05-30T13:44:50-04:00
ci: Allow testing bootstrapping on MRs using the "test-bootstrap" label
- - - - -
18326ad2 by Matthew Pickering at 2022-05-30T13:45:25-04:00
rts: Remove explicit timescale for deprecating -h flag
We originally planned to remove the flag in 9.4 but there's actually no
great rush to do so and it's probably less confusing (forever) to keep
the message around suggesting an explicit profiling option.
Fixes #21545
- - - - -
eaaa1389 by Matthew Pickering at 2022-05-30T13:46:01-04:00
Enable -dlint in hadrian lint transformer
Now #21563 is fixed we can properly enable `-dlint` in CI rather than a
subset of the flags.
- - - - -
0544f114 by Ben Gamari at 2022-05-30T19:16:55-04:00
upload-ghc-libs: Allow candidate-only upload
- - - - -
83467435 by Sylvain Henry at 2022-05-30T19:17:35-04:00
Avoid using DynFlags in GHC.Linker.Unit (#17957)
- - - - -
5c4421b1 by Matthew Pickering at 2022-05-31T08:35:17-04:00
hadrian: Introduce new package database for executables needed to build stage0
These executables (such as hsc2hs) are built using the boot compiler and
crucially, most libraries from the global package database.
We also move other build-time executables to be built in this stage such
as linters which also cleans up which libraries end up in the global
package database. This allows us to remove hacks where linters-common is
removed from the package database when a bindist is created.
This fixes issues caused by infinite recursion due to bytestring adding
a dependency on template-haskell.
Fixes #21634
- - - - -
0dafd3e7 by Matthew Pickering at 2022-05-31T08:35:17-04:00
Build stage1 with -V as well
This helps tracing errors which happen when building stage1
- - - - -
15d42a7a by Matthew Pickering at 2022-05-31T08:35:52-04:00
Revert "packaging: Build perf builds with -split-sections"
This reverts commit 699f593532a3cd5ca1c2fab6e6e4ce9d53be2c1f.
Split sections causes segfaults in profiling way with old toolchains
(deb9) and on windows (#21670)
Fixes #21670
- - - - -
d4c71f09 by John Ericson at 2022-05-31T16:26:28+00:00
Purge `DynFlags` and `HscEnv` from some `GHC.Core` modules where it's not too hard
Progress towards #17957
Because of `CoreM`, I did not move the `DynFlags` and `HscEnv` to other
modules as thoroughly as I usually do. This does mean that risk of
`DynFlags` "creeping back in" is higher than it usually is.
After we do the same process to the other Core passes, and then figure
out what we want to do about `CoreM`, we can finish the job started
here.
That is a good deal more work, however, so it certainly makes sense to
land this now.
- - - - -
a720322f by romes at 2022-06-01T07:44:44-04:00
Restore Note [Quasi-quote overview]
- - - - -
392ce3fc by romes at 2022-06-01T07:44:44-04:00
Move UntypedSpliceFlavour from L.H.S to GHC.Hs
UntypedSpliceFlavour was only used in the client-specific `GHC.Hs.Expr`
but was defined in the client-independent L.H.S.Expr.
- - - - -
7975202b by romes at 2022-06-01T07:44:44-04:00
TTG: Rework and improve splices
This commit redefines the structure of Splices in the AST.
We get rid of `HsSplice` which used to represent typed and untyped
splices, quasi quotes, and the result of splicing either an expression,
a type or a pattern.
Instead we have `HsUntypedSplice` which models an untyped splice or a
quasi quoter, which works in practice just like untyped splices.
The `HsExpr` constructor `HsSpliceE` which used to be constructed with
an `HsSplice` is split into `HsTypedSplice` and `HsUntypedSplice`. The
former is directly constructed with an `HsExpr` and the latter now takes
an `HsUntypedSplice`.
Both `HsType` and `Pat` constructors `HsSpliceTy` and `SplicePat` now
take an `HsUntypedSplice` instead of a `HsSplice` (remember only
/untyped splices/ can be spliced as types or patterns).
The result of splicing an expression, type, or pattern is now
comfortably stored in the extension fields `XSpliceTy`, `XSplicePat`,
`XUntypedSplice` as, respectively, `HsUntypedSpliceResult (HsType
GhcRn)`, `HsUntypedSpliceResult (Pat GhcRn)`, and `HsUntypedSpliceResult
(HsExpr GhcRn)`
Overall the TTG extension points are now better used to
make invalid states unrepresentable and model the progression between
stages better.
See Note [Lifecycle of an untyped splice, and PendingRnSplice]
and Note [Lifecycle of an typed splice, and PendingTcSplice] for more
details.
Updates haddock submodule
Fixes #21263
-------------------------
Metric Decrease:
hard_hole_fits
-------------------------
- - - - -
320270c2 by Matthew Pickering at 2022-06-01T07:44:44-04:00
Add test for #21619
Fixes #21619
- - - - -
ef7ddd73 by Pierre Le Marre at 2022-06-01T07:44:47-04:00
Pure Haskell implementation of GHC.Unicode
Switch to a pure Haskell implementation of base:GHC.Unicode, based on the implementation of the package unicode-data (https://github.com/composewell/unicode-data/)
Approved by CLC as per https://github.com/haskell/core-libraries-committee/issues/59#issuecomment-….
- Remove current Unicode cbits.
- Add generator for Unicode property files from Unicode Character Database.
- Generate internal modules.
- Update GHC.Unicode.
- Add unicode003 test for general categories and case mappings.
- Add Python scripts to check 'base' Unicode tests outputs and characters properties.
Fixes #21375
-------------------------
Metric Decrease:
T16875
Metric Increase:
T4029
T18304
haddock.base
-------------------------
- - - - -
514a6a28 by Eric Lindblad at 2022-06-01T07:44:51-04:00
typos
- - - - -
9004be3c by Matthew Pickering at 2022-06-01T07:44:52-04:00
source-dist: Copy in files created by ./boot
Since we started producing source dists with hadrian we stopped copying
in the files created by ./boot which adds a dependency on python3 and
autoreconf. This adds back in the files which were created by running
configure.
Fixes #21673 #21672 and #21626
- - - - -
a12a3cab by Matthew Pickering at 2022-06-01T07:44:52-04:00
ci: Don't try to run ./boot when testing bootstrap of source dist
- - - - -
e07f9059 by Shlomo Shuck at 2022-06-01T07:44:55-04:00
Language.Haskell.Syntax: Fix docs for PromotedConsT etc.
Fixes ghc/ghc#21675.
- - - - -
87295e6d by Ben Gamari at 2022-06-01T07:44:56-04:00
Bump bytestring, process, and text submodules
Metric Decrease:
T5631
Metric Increase:
T18223
(cherry picked from commit 55fcee30cb3281a66f792e8673967d64619643af)
- - - - -
24b5bb61 by Ben Gamari at 2022-06-01T07:44:56-04:00
Bump Cabal submodule
To current `master`.
(cherry picked from commit fbb59c212415188486aafd970eafef170516356a)
- - - - -
5433a35e by Matthew Pickering at 2022-06-01T22:26:30-04:00
hadrian/tool-args: Write output to intermediate file rather than via stdout
This allows us to see the output of hadrian while it is doing the setup.
- - - - -
468f919b by Matthew Pickering at 2022-06-01T22:27:10-04:00
Make -fcompact-unwind the default
This is a follow-up to !7247 (closed) making the inclusion of compact unwinding
sections the default.
Also a slight refactoring/simplification of the flag handling to add
-fno-compact-unwind.
- - - - -
819fdc61 by Zubin Duggal at 2022-06-01T22:27:47-04:00
hadrian bootstrap: add plans for 9.0.2 and 9.2.3
- - - - -
9fa790b4 by Zubin Duggal at 2022-06-01T22:27:47-04:00
ci: Add matrix for bootstrap sources
- - - - -
ce9f986b by John Ericson at 2022-06-02T15:42:59+00:00
HsToCore.Coverage: Improve haddocks
- - - - -
f065804e by John Ericson at 2022-06-02T15:42:59+00:00
Hoist auto `mkModBreaks` and `writeMixEntries` conditions to caller
No need to inline traversing a maybe for `mkModBreaks`. And better to
make each function do one thing and let the caller deside when than
scatter the decision making and make the caller seem more imperative.
- - - - -
d550d907 by John Ericson at 2022-06-02T15:42:59+00:00
Rename `HsToCore.{Coverage -> Ticks}`
The old name made it confusing why disabling HPC didn't disable the
entire pass. The name makes it clear --- there are other reasons to add
ticks in addition.
- - - - -
6520da95 by John Ericson at 2022-06-02T15:42:59+00:00
Split out `GHC.HsToCore.{Breakpoints,Coverage}` and use `SizedSeq`
As proposed in
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7508#note_432877 and
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7508#note_434676,
`GHC.HsToCore.Ticks` is about ticks, breakpoints are separate and
backend-specific (only for the bytecode interpreter), and mix entry
writing is just for HPC.
With this split we separate out those interpreter- and HPC-specific
its, and keep the main `GHC.HsToCore.Ticks` agnostic.
Also, instead of passing the reversed list and count around, we use
`SizedSeq` which abstracts over the algorithm. This is much nicer to
avoid noise and prevents bugs.
(The bugs are not just hypothetical! I missed up the reverses on an
earlier draft of this commit.)
- - - - -
1838c3d8 by Sylvain Henry at 2022-06-02T15:43:14+00:00
GHC.HsToCore.Breakpoints: Slightly improve perf
We have the length already, so we might as well use that rather than
O(n) recomputing it.
- - - - -
5a3fdcfd by John Ericson at 2022-06-02T15:43:59+00:00
HsToCore.Coverage: Purge DynFlags
Finishes what !7467 (closed) started.
Progress towards #17957
- - - - -
9ce9ea50 by HaskellMouse at 2022-06-06T09:50:00-04:00
Deprecate TypeInType extension
This commit fixes #20312
It deprecates "TypeInType" extension
according to the following proposal:
https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0083-n…
It has been already implemented.
The migration strategy:
1. Disable TypeInType
2. Enable both DataKinds and PolyKinds extensions
Metric Decrease:
T16875
- - - - -
f2e037fd by Aaron Allen at 2022-06-06T09:50:39-04:00
Diagnostics conversions, part 6 (#20116)
Replaces uses of `TcRnUnknownMessage` with proper diagnostics
constructors in `GHC.Tc.Gen.Match`, `GHC.Tc.Gen.Pat`, and
`GHC.Tc.Gen.Sig`.
- - - - -
04209f2a by Simon Peyton Jones at 2022-06-06T09:51:15-04:00
Ensure floated dictionaries are in scope (again)
In the Specialiser, we missed one more call to
bringFloatedDictsIntoScope (see #21391).
This omission led to #21689. The problem is that the call
to `rewriteClassOps` needs to have in scope any dictionaries
floated out of the arguments we have just specialised.
Easy fix.
- - - - -
a7fece19 by John Ericson at 2022-06-07T05:04:22+00:00
Don't print the number of deps in count-deps tests
It is redundant information and a source of needless version control
conflicts when multiple MRs are changing the deps list.
Just printing the list and not also its length is fine.
- - - - -
a1651a3a by John Ericson at 2022-06-07T05:06:38+00:00
Core.Lint: Reduce `DynFlags` and `HscEnv`
Co-Authored-By: Andre Marianiello <andremarianiello(a)users.noreply.github.com>
- - - - -
56ebf9a5 by Andreas Klebinger at 2022-06-09T09:11:43-04:00
Fix a CSE shadowing bug.
We used to process the rhs of non-recursive bindings and their body
using the same env. If we had something like
let x = ... x ...
this caused trouble because the two xs refer to different binders
but we would substitute both for a new binder x2 causing out of scope
errors.
We now simply use two different envs for the rhs and body in cse_bind.
It's all explained in the Note [Separate envs for let rhs and body]
Fixes #21685
- - - - -
28880828 by sheaf at 2022-06-09T09:12:19-04:00
Typecheck remaining ValArgs in rebuildHsApps
This patch refactors hasFixedRuntimeRep_remainingValArgs, renaming it
to tcRemainingValArgs. The logic is moved to rebuildHsApps, which
ensures consistent behaviour across tcApp and quickLookArg1/tcEValArg.
This patch also refactors the treatment of stupid theta for data
constructors, changing the place we drop stupid theta arguments
from dsConLike to mkDataConRep (now the datacon wrapper drops these
arguments).
We decided not to implement PHASE 2 of the FixedRuntimeRep plan for
these remaining ValArgs. Future directions are outlined on the wiki:
https://gitlab.haskell.org/ghc/ghc/-/wikis/Remaining-ValArgs
Fixes #21544 and #21650
- - - - -
1fbba97b by Matthew Pickering at 2022-06-09T09:12:54-04:00
Add test for T21682
Fixes #21682
- - - - -
8727be73 by Andreas Klebinger at 2022-06-09T09:13:29-04:00
Document dataToTag# primop
- - - - -
7eab75bb by uhbif19 at 2022-06-09T20:22:47+03:00
Remove TcRnUnknownMessage usage from GHC.Rename.Env #20115
- - - - -
46d2fc65 by uhbif19 at 2022-06-09T20:24:40+03:00
Fix TcRnPragmaWarning meaning
- - - - -
69e72ecd by Matthew Pickering at 2022-06-09T19:07:01-04:00
getProcessCPUTime: Fix the getrusage fallback to account for system CPU time
clock_gettime reports the combined total or user AND system time so in
order to replicate it with getrusage we need to add both system and user
time together.
See https://stackoverflow.com/questions/7622371/getrusage-vs-clock-gettime
Some sample measurements when building Cabal with this patch
t1: rusage
t2: clock_gettime
t1: 62347518000; t2: 62347520873
t1: 62395687000; t2: 62395690171
t1: 62432435000; t2: 62432437313
t1: 62478489000; t2: 62478492465
t1: 62514990000; t2: 62514992534
t1: 62515479000; t2: 62515480327
t1: 62515485000; t2: 62515486344
Fixes #21656
- - - - -
722814ba by Yiyun Liu at 2022-06-10T21:23:03-04:00
Use <br> instead of newline character
- - - - -
dc202080 by Matthew Craven at 2022-06-13T14:07:12-04:00
Use (fixed_lev = True) in mkDataTyConRhs
- - - - -
ad70c621 by Matthew Pickering at 2022-06-14T08:40:53-04:00
hadrian: Fix testing stage1 compiler
There were various issues with testing the stage1 compiler..
1. The wrapper was not being built
2. The wrapper was picking up the stage0 package database and trying to
load prelude from that.
3. The wrappers never worked on windows so just don't support that for
now.
Fixes #21072
- - - - -
ac83899d by Ben Gamari at 2022-06-14T08:41:30-04:00
validate: Ensure that $make variable is set
Currently the `$make` variable is used without being set in `validate`'s
Hadrian path, which uses make to install the binary distribution. Fix
this.
Fixes #21687.
- - - - -
59bc6008 by John Ericson at 2022-06-15T18:05:35+00:00
CoreToStg.Prep: Get rid of `DynFlags` and `HscEnv`
The call sites in `Driver.Main` are duplicative, but this is good,
because the next step is to remove `InteractiveContext` from `Core.Lint`
into `Core.Lint.Interactive`.
Also further clean up `Core.Lint` to use a better configuration record
than the one we initially added.
- - - - -
aa9d9381 by Ben Gamari at 2022-06-15T20:33:04-04:00
hadrian: Run xattr -rc . on bindist tarball
Fixes #21506.
- - - - -
cdc75a1f by Ben Gamari at 2022-06-15T20:33:04-04:00
configure: Hide spurious warning from ld
Previously the check_for_gold_t22266 configure check could result in
spurious warnings coming from the linker being blurted to stderr.
Suppress these by piping stderr to /dev/null.
- - - - -
e128b7b8 by Ben Gamari at 2022-06-15T20:33:40-04:00
cmm: Add surface syntax for MO_MulMayOflo
- - - - -
bde65ea9 by Ben Gamari at 2022-06-15T20:34:16-04:00
configure: Don't attempt to override linker on Darwin
Configure's --enable-ld-override functionality is intended to ensure
that we don't rely on ld.bfd, which tends to be slow and buggy, on
Linux and Windows. However, on Darwin the lack of sensible package
management makes it extremely easy for users to have awkward mixtures of
toolchain components from, e.g., XCode, the Apple Command-Line Tools
package, and homebrew. This leads to extremely confusing problems
like #21712.
Here we avoid this by simply giving up on linker selection on Darwin
altogether. This isn't so bad since the Apple ld64 linker has decent
performance and AFAICT fairly reliable.
Closes #21712.
- - - - -
25b510c3 by Torsten Schmits at 2022-06-16T12:37:45-04:00
replace quadratic nub to fight byte code gen perf explosion
Despite this code having been present in the core-to-bytecode
implementation, I have observed it in the wild starting with 9.2,
causing enormous slowdown in certain situations.
My test case produces the following profiles:
Before:
```
total time = 559.77 secs (559766 ticks @ 1000 us, 1 processor)
total alloc = 513,985,665,640 bytes (excludes profiling overheads)
COST CENTRE MODULE SRC %time %alloc ticks bytes
elem_by Data.OldList libraries/base/Data/OldList.hs:429:1-7 67.6 92.9 378282 477447404296
eqInt GHC.Classes libraries/ghc-prim/GHC/Classes.hs:275:8-14 12.4 0.0 69333 32
$c>>= GHC.Data.IOEnv <no location info> 6.9 0.6 38475 3020371232
```
After:
```
total time = 89.83 secs (89833 ticks @ 1000 us, 1 processor)
total alloc = 39,365,306,360 bytes (excludes profiling overheads)
COST CENTRE MODULE SRC %time %alloc ticks bytes
$c>>= GHC.Data.IOEnv <no location info> 43.6 7.7 39156 3020403424
doCase GHC.StgToByteCode compiler/GHC/StgToByteCode.hs:(805,1)-(1054,53) 2.5 7.4 2246 2920777088
```
- - - - -
aa7e1f20 by Matthew Pickering at 2022-06-16T12:38:21-04:00
hadrian: Don't install `include/` directory in bindist.
The install_includes for the RTS package used to be put in the top-level
./include folder but this would lead to confusing things happening if
you installed multiple GHC versions side-by-side.
We don't need this folder anymore because install-includes
is honoured properly by cabal and the relevant header files already
copied in by the cabal installation process.
If you want to depend on the header files for the RTS in a Haskell
project then you just have to depend on the `rts` package and the
correct include directories will be provided for you.
If you want to depend on the header files in a standard C project then
you should query ghc-pkg to get the right paths.
```
ghc-pkg field rts include-dirs --simple-output
```
Fixes #21609
- - - - -
03172116 by Bryan Richter at 2022-06-16T12:38:57-04:00
Enable eventlogs on nightly perf job
- - - - -
ecbf8685 by Hécate Moonlight at 2022-06-16T16:30:00-04:00
Repair dead link in TH haddocks
Closes #21724
- - - - -
99ff3818 by sheaf at 2022-06-16T16:30:39-04:00
Hadrian: allow configuring Hsc2Hs
This patch adds the ability to pass options to Hsc2Hs as Hadrian
key/value settings, in the same way as cabal configure options,
using the syntax:
*.*.hsc2hs.run.opts += ...
- - - - -
9c575f24 by sheaf at 2022-06-16T16:30:39-04:00
Hadrian bootstrap: look up hsc2hs
Hadrian bootstrapping looks up where to find ghc_pkg, but the same
logic was not in place for hsc2hs which meant we could fail to
find the appropriate hsc2hs executabe when bootstrapping Hadrian.
This patch adds that missing logic.
- - - - -
229d741f by Ben Gamari at 2022-06-18T10:42:54-04:00
ghc-heap: Add (broken) test for #21622
- - - - -
cadd7753 by Ben Gamari at 2022-06-18T10:42:54-04:00
ghc-heap: Don't Box NULL pointers
Previously we could construct a `Box` of a NULL pointer from the `link`
field of `StgWeak`. Now we take care to avoid ever introducing such
pointers in `collect_pointers` and ensure that the `link` field is
represented as a `Maybe` in the `Closure` type.
Fixes #21622
- - - - -
31c214cc by Tamar Christina at 2022-06-18T10:43:34-04:00
winio: Add support to console handles to handleToHANDLE
- - - - -
711cb417 by Ben Gamari at 2022-06-18T10:44:11-04:00
CmmToAsm/AArch64: Add SMUL[LH] instructions
These will be needed to fix #21624.
- - - - -
d05d90d2 by Ben Gamari at 2022-06-18T10:44:11-04:00
CmmToAsm/AArch64: Fix syntax of OpRegShift operands
Previously this produced invalid assembly containing a redundant comma.
- - - - -
a1e1d8ee by Ben Gamari at 2022-06-18T10:44:11-04:00
ncg/aarch64: Fix implementation of IntMulMayOflo
The code generated for IntMulMayOflo was previously wrong as it
depended upon the overflow flag, which the AArch64 MUL instruction does
not set. Fix this.
Fixes #21624.
- - - - -
26745006 by Ben Gamari at 2022-06-18T10:44:11-04:00
testsuite: Add test for #21624
Ensuring that mulIntMayOflo# behaves as expected.
- - - - -
94f2e92a by Sebastian Graf at 2022-06-20T09:40:58+02:00
CprAnal: Set signatures of DFuns to top
The recursive DFun in the reproducer for #20836 also triggered a bug in CprAnal
that is observable in a debug build. The CPR signature of a recursive DFunId
was never updated and hence the optimistic arity 0 bottom signature triggered a
mismatch with the arity 1 of the binding in WorkWrap. We never miscompiled any
code because WW doesn't exploit bottom CPR signatures.
- - - - -
b570da84 by Sebastian Graf at 2022-06-20T09:43:29+02:00
CorePrep: Don't speculatively evaluate recursive calls (#20836)
In #20836 we have optimised a terminating program into an endless loop,
because we speculated the self-recursive call of a recursive DFun.
Now we track the set of enclosing recursive binders in CorePrep to prevent
speculation of such self-recursive calls.
See the updates to Note [Speculative evaluation] for details.
Fixes #20836.
- - - - -
49fb2f9b by Sebastian Graf at 2022-06-20T09:43:32+02:00
Simplify: Take care with eta reduction in recursive RHSs (#21652)
Similar to the fix to #20836 in CorePrep, we now track the set of enclosing
recursive binders in the SimplEnv and SimpleOptEnv.
See Note [Eta reduction in recursive RHSs] for details.
I also updated Note [Arity robustness] with the insights Simon and I had in a
call discussing the issue.
Fixes #21652.
Unfortunately, we get a 5% ghc/alloc regression in T16577. That is due to
additional eta reduction in GHC.Read.choose1 and the resulting ANF-isation
of a large list literal at the top-level that didn't happen before (presumably
because it was too interesting to float to the top-level). There's not much we
can do about that.
Metric Increase:
T16577
- - - - -
2563b95c by Sebastian Graf at 2022-06-20T09:45:09+02:00
Ignore .hie-bios
- - - - -
e4e44d8d by Simon Peyton Jones at 2022-06-20T12:31:45-04:00
Instantiate top level foralls in partial type signatures
The main fix for #21667 is the new call to tcInstTypeBnders
in tcHsPartialSigType. It was really a simple omission before.
I also moved the decision about whether we need to apply the
Monomorphism Restriction, from `decideGeneralisationPlan` to
`tcPolyInfer`. That removes a flag from the InferGen constructor,
which is good.
But more importantly, it allows the new function,
checkMonomorphismRestriction
called from `tcPolyInfer`, to "see" the `Types` involved rather than
the `HsTypes`. And that in turn matters because we invoke the MR for
partial signatures if none of the partial signatures in the group have
any overloading context; and we can't answer that question for HsTypes.
See Note [Partial type signatures and the monomorphism restriction]
in GHC.Tc.Gen.Bind.
This latter is really a pre-existing bug.
- - - - -
262a9f93 by Winston Hartnett at 2022-06-20T12:32:23-04:00
Make Outputable instance for InlineSig print the InlineSpec
Fix ghc/ghc#21739
Squash fix ghc/ghc#21739
- - - - -
b5590fff by Matthew Pickering at 2022-06-20T12:32:59-04:00
Add NO_BOOT to hackage_doc_tarball job
We were attempting to boot a src-tarball which doesn't work as ./boot is
not included in the source tarball. This slipped through as the job is
only run on nightly.
- - - - -
d24afd9d by Vladislav Zavialov at 2022-06-20T17:34:44-04:00
HsToken for @-patterns and TypeApplications (#19623)
One more step towards the new design of EPA.
- - - - -
159b7628 by Tamar Christina at 2022-06-20T17:35:23-04:00
linker: only keep rtl exception tables if they have been relocated
- - - - -
da5ff105 by Andreas Klebinger at 2022-06-21T17:04:12+02:00
Ticky:Make json info a separate field.
- - - - -
1a4ce4b2 by Matthew Pickering at 2022-06-22T09:49:22+01:00
Revert "Ticky:Make json info a separate field."
This reverts commit da5ff10503e683e2148c62e36f8fe2f819328862.
This was pushed directly without review.
- - - - -
f89bf85f by Vanessa McHale at 2022-06-22T08:21:32-04:00
Flags to disable local let-floating; -flocal-float-out, -flocal-float-out-top-level CLI flags
These flags affect the behaviour of local let floating.
If `-flocal-float-out` is disabled (the default) then we disable all
local floating.
```
…(let x = let y = e in (a,b) in body)...
===>
…(let y = e; x = (a,b) in body)...
```
Further to this, top-level local floating can be disabled on it's own by
passing -fno-local-float-out-top-level.
```
x = let y = e in (a,b)
===>
y = e; x = (a,b)
```
Note that this is only about local floating, ie, floating two adjacent
lets past each other and doesn't say anything about the global floating
pass which is controlled by `-fno-float`.
Fixes #13663
- - - - -
4ccefc6e by Matthew Craven at 2022-06-22T08:22:12-04:00
Check for Int overflows in Data.Array.Byte
- - - - -
2004e3c8 by Matthew Craven at 2022-06-22T08:22:12-04:00
Add a basic test for ByteArray's Monoid instance
- - - - -
fb36770c by Matthew Craven at 2022-06-22T08:22:12-04:00
Rename `copyByteArray` to `unsafeCopyByteArray`
- - - - -
ecc9aedc by Ben Gamari at 2022-06-22T08:22:48-04:00
testsuite: Add test for #21719
Happily, this has been fixed since 9.2.
- - - - -
19606c42 by Brandon Chinn at 2022-06-22T08:23:28-04:00
Use lookupNameCache instead of lookupOrigIO
- - - - -
4c9dfd69 by Brandon Chinn at 2022-06-22T08:23:28-04:00
Break out thNameToGhcNameIO (ref. #21730)
- - - - -
eb4fb849 by Michael Peyton Jones at 2022-06-22T08:24:07-04:00
Add laws for 'toInteger' and 'toRational'
CLC discussion here:
https://github.com/haskell/core-libraries-committee/issues/58
- - - - -
c1a950c1 by Alexander Esgen at 2022-06-22T12:36:13+00:00
Correct documentation of defaults of the `-V` RTS option
- - - - -
b7b7d90d by Matthew Pickering at 2022-06-22T21:58:12-04:00
Transcribe discussion from #21483 into a Note
In #21483 I had a discussion with Simon Marlow about the memory
retention behaviour of -Fd. I have just transcribed that conversation
here as it elucidates the potentially subtle assumptions which led to
the design of the memory retention behaviours of -Fd.
Fixes #21483
- - - - -
980d1954 by Ben Gamari at 2022-06-22T21:58:48-04:00
eventlog: Don't leave dangling pointers hanging around
Previously we failed to reset pointers to various eventlog buffers to
NULL after freeing them. In principle we shouldn't look at them after
they are freed but nevertheless it is good practice to set them to a
well-defined value.
- - - - -
575ec846 by Eric Lindblad at 2022-06-22T21:59:28-04:00
runhaskell
- - - - -
e6a69337 by Artem Pelenitsyn at 2022-06-22T22:00:07-04:00
re-export GHC.Natural.minusNaturalMaybe from Numeric.Natural
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/45
- - - - -
5d45aa97 by Gergő Érdi at 2022-06-22T22:00:46-04:00
When specialising, look through floatable ticks.
Fixes #21697.
- - - - -
531205ac by Andreas Klebinger at 2022-06-22T22:01:22-04:00
TagCheck.hs: Properly check if arguments are boxed types.
For one by mistake I had been checking against the kind of runtime rep
instead of the boxity.
This uncovered another bug, namely that we tried to generate the
checking code before we had associated the function arguments with
a register, so this could never have worked to begin with.
This fixes #21729 and both of the above issues.
- - - - -
c7f9f6b5 by Gleb Popov at 2022-06-22T22:02:00-04:00
Use correct arch for the FreeBSD triple in gen-data-layout.sh
Downstream bug for reference: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261798
Relevant upstream issue: #15718
- - - - -
75f0091b by Andreas Klebinger at 2022-06-22T22:02:35-04:00
Bump nofib submodule.
Allows the shake runner to build with 9.2.3 among other things.
Fixes #21772
- - - - -
0aa0ce69 by Ben Gamari at 2022-06-27T08:01:03-04:00
Bump ghc-prim and base versions
To 0.9.0 and 4.17.0 respectively.
Bumps array, deepseq, directory, filepath, haskeline, hpc, parsec, stm,
terminfo, text, unix, haddock, and hsc2hs submodules.
(cherry picked from commit ba47b95122b7b336ce1cc00896a47b584ad24095)
- - - - -
4713abc2 by Ben Gamari at 2022-06-27T08:01:03-04:00
testsuite: Use normalise_version more consistently
Previously several tests' output were unnecessarily dependent on version
numbers, particularly of `base`. Fix this.
- - - - -
d7b0642b by Matthew Pickering at 2022-06-27T08:01:03-04:00
linters: Fix lint-submodule-refs when crashing trying to find plausible branches
- - - - -
38378be3 by Andreas Klebinger at 2022-06-27T08:01:39-04:00
hadrian: Improve haddocks for ghcDebugAssertions
- - - - -
ac7a7fc8 by Andreas Klebinger at 2022-06-27T08:01:39-04:00
Don't mark lambda binders as OtherCon
We used to put OtherCon unfoldings on lambda binders of workers
and sometimes also join points/specializations with with the
assumption that since the wrapper would force these arguments
once we execute the RHS they would indeed be in WHNF.
This was wrong for reasons detailed in #21472. So now we purge
evaluated unfoldings from *all* lambda binders.
This fixes #21472, but at the cost of sometimes not using as efficient a
calling convention. It can also change inlining behaviour as some
occurances will no longer look like value arguments when they did
before.
As consequence we also change how we compute CBV information for
arguments slightly. We now *always* determine the CBV convention
for arguments during tidy. Earlier in the pipeline we merely mark
functions as candidates for having their arguments treated as CBV.
As before the process is described in the relevant notes:
Note [CBV Function Ids]
Note [Attaching CBV Marks to ids]
Note [Never put `OtherCon` unfoldigns on lambda binders]
-------------------------
Metric Decrease:
T12425
T13035
T18223
T18223
T18923
MultiLayerModulesTH_OneShot
Metric Increase:
WWRec
-------------------------
- - - - -
06cf6f4a by Tony Zorman at 2022-06-27T08:02:18-04:00
Add suggestions for unrecognised pragmas (#21589)
In case of a misspelled pragma, offer possible corrections as to what
the user could have meant.
Fixes: https://gitlab.haskell.org/ghc/ghc/-/issues/21589
- - - - -
3fbab757 by Greg Steuck at 2022-06-27T08:02:56-04:00
Remove the traces of i386-*-openbsd, long live amd64
OpenBSD will not ship any ghc packages on i386 starting with 7.2
release. This means there will not be a bootstrap compiler easily
available. The last available binaries are ghc-8.10.6 which is
already not supported as bootstrap for HEAD.
See here for more information:
https://marc.info/?l=openbsd-ports&m=165060700222580&w=2
- - - - -
58530271 by Andrew Lelechenko at 2022-06-27T08:03:34-04:00
Add Foldable1 and Bifoldable1 type classes
Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/9
Instances roughly follow
https://hackage.haskell.org/package/semigroupoids-5.3.7/docs/Data-Semigroup…
but the API of `Foldable1` was expanded in comparison to `semigroupoids`.
Compatibility shim is available from https://github.com/phadej/foldable1 (to be released).
Closes #13573.
- - - - -
a51f4ecc by Naomi Liu at 2022-06-27T08:04:13-04:00
add levity polymorphism to addrToAny#
- - - - -
f4edcdc4 by Naomi Liu at 2022-06-27T08:04:13-04:00
add tests for addrToAny# levity
- - - - -
07016fc9 by Matthew Pickering at 2022-06-27T08:04:49-04:00
hadrian: Update main README page
This README had some quite out-of-date content about the build system so
I did a complete pass deleting old material. I also made the section
about flavours more prominent and mentioned flavour transformers.
- - - - -
79ae2d89 by Ben Gamari at 2022-06-27T08:05:24-04:00
testsuite: Hide output from test compilations with verbosity==2
Previously the output from test compilations used to determine whether,
e.g., profiling libraries are available was shown with verbosity
levels >= 2. However, the default level is 2, meaning that most users
were often spammed with confusing errors. Fix this by bumping the
verbosity threshold for this output to >=3.
Fixes #21760.
- - - - -
995ea44d by Ben Gamari at 2022-06-27T08:06:00-04:00
configure: Only probe for LD in FIND_LD
Since 6be2c5a7e9187fc14d51e1ec32ca235143bb0d8b we would probe for LD
rather early in `configure`. However, it turns out that this breaks
`configure`'s `ld`-override logic, which assumes that `LD` was set by
the user and aborts.
Fixes #21778.
- - - - -
b43d140b by Sergei Trofimovich at 2022-06-27T08:06:39-04:00
`.hs-boot` make rules: add missing order-only dependency on target directory
Noticed missing target directory dependency as a build failure in
`make --shuffle` mode (added in https://savannah.gnu.org/bugs/index.php?62100)
"cp" libraries/base/./GHC/Stack/CCS.hs-boot libraries/base/dist-install/build/GHC/Stack/CCS.hs-boot
cp: cannot create regular file 'libraries/base/dist-install/build/GHC/Stack/CCS.hs-boot': No such file or directory
libraries/haskeline/ghc.mk:4: libraries/haskeline/dist-install/build/.depend-v-p-dyn.haskell: No such file or directory
make[1]: *** [libraries/base/ghc.mk:4: libraries/base/dist-install/build/GHC/Stack/CCS.hs-boot] Error 1 shuffle=1656129254
make: *** [Makefile:128: all] Error 2 shuffle=1656129254
Note that `cp` complains about inability to create target file.
The change adds order-only dependency on a target directory (similar to
the rest of rules in that file).
The bug is lurking there since 2009 commit 34cc75e1a (`GHC new build
system megapatch`.) where upfront directory creation was never added to
`.hs-boot` files.
- - - - -
57a5f88c by Ben Gamari at 2022-06-28T03:24:24-04:00
Mark AArch64/Darwin as requiring sign-extension
Apple's AArch64 ABI requires that the caller sign-extend small integer
arguments. Set platformCConvNeedsExtension to reflect this fact.
Fixes #21773.
- - - - -
df762ae9 by Ben Gamari at 2022-06-28T03:24:24-04:00
-ddump-llvm shouldn't imply -fllvm
Previously -ddump-llvm would change the backend used, which contrasts
with all other dump flags. This is quite surprising and cost me quite
a bit of time. Dump flags should not change compiler behavior.
Fixes #21776.
- - - - -
70f0c1f8 by Ben Gamari at 2022-06-28T03:24:24-04:00
CmmToAsm/AArch64: Re-format argument handling logic
Previously there were very long, hard to parse lines. Fix this.
- - - - -
696d64c3 by Ben Gamari at 2022-06-28T03:24:24-04:00
CmmToAsm/AArch64: Sign-extend narrow C arguments
The AArch64/Darwin ABI requires that function arguments narrower
than 32-bits must be sign-extended by the caller. We neglected to
do this, resulting in #20735.
Fixes #20735.
- - - - -
c006ac0d by Ben Gamari at 2022-06-28T03:24:24-04:00
testsuite: Add test for #20735
- - - - -
16b9100c by Ben Gamari at 2022-06-28T03:24:59-04:00
integer-gmp: Fix cabal file
Evidently fields may not come after sections in a cabal file.
- - - - -
03cc5d02 by Sergei Trofimovich at 2022-06-28T15:20:45-04:00
ghc.mk: fix 'make install' (`mk/system-cxx-std-lib-1.0.conf.install` does not exist)
before the change `make install` was failing as:
```
"mv" "/<<NIX>>/ghc-9.3.20220406/lib/ghc-9.5.20220625/bin/ghc-stage2" "/<<NIX>>/ghc-9.3.20220406/lib/ghc-9.5.20220625/bin/ghc"
make[1]: *** No rule to make target 'mk/system-cxx-std-lib-1.0.conf.install', needed by 'install_packages'. Stop.
```
I think it's a recent regression caused by 0ef249aa where `system-cxx-std-lib-1.0.conf`
is created (somewhat manually), but not the .install varianlt of it.
The fix is to consistently use `mk/system-cxx-std-lib-1.0.conf` everywhere.
Closes: https://gitlab.haskell.org/ghc/ghc/-/issues/21784
- - - - -
eecab8f9 by Simon Peyton Jones at 2022-06-28T15:21:21-04:00
Comments only, about join points
This MR just adds some documentation about why casts
destroy join points, following #21716.
- - - - -
251471e7 by Matthew Pickering at 2022-06-28T19:02:41-04:00
Cleanup BuiltInSyntax vs UserSyntax
There was some confusion about whether FUN/TYPE/One/Many should be
BuiltInSyntax or UserSyntax. The answer is certainly UserSyntax as
BuiltInSyntax is for things which are directly constructed by the parser
rather than going through normal renaming channels.
I fixed all the obviously wrong places I could find and added a test for
the original bug which was caused by this (#21752)
Fixes #21752 #20695 #18302
- - - - -
0e22f16c by Ben Gamari at 2022-06-28T19:03:16-04:00
template-haskell: Bump version to 2.19.0.0
Bumps text and exceptions submodules due to bounds.
- - - - -
bbe6f10e by Emily Bourke at 2022-06-29T08:23:13+00:00
Tiny tweak to `IOPort#` documentation
The exclamation mark and bracket don’t seem to make sense here. I’ve
looked through the history, and I don’t think they’re deliberate – possibly
a copy-and-paste error.
- - - - -
70e47489 by Dominik Peteler at 2022-06-29T19:26:31-04:00
Remove `CoreOccurAnal` constructor of the `CoreToDo` type
It was dead code since the last occurence in an expression context got
removed in 71916e1c018dded2e68d6769a2dbb8777da12664.
- - - - -
d0722170 by nineonine at 2022-07-01T08:15:56-04:00
Fix panic with UnliftedFFITypes+CApiFFI (#14624)
When declaring foreign import using CAPI calling convention, using
unlifted unboxed types would result in compiler panic. There was
an attempt to fix the situation in #9274, however it only addressed
some of the ByteArray cases.
This patch fixes other missed cases for all prims that may be used
as basic foreign types.
- - - - -
eb043148 by Douglas Wilson at 2022-07-01T08:16:32-04:00
rts: gc stats: account properly for copied bytes in sequential collections
We were not updating the [copied,any_work,scav_find_work, max_n_todo_overflow]
counters during sequential collections. As well, we were double counting for
parallel collections.
To fix this we add an `else` clause to the `if (is_par_gc())`.
The par_* counters do not need to be updated in the sequential case
because they must be 0.
- - - - -
f95edea9 by Matthew Pickering at 2022-07-01T19:21:55-04:00
desugar: Look through ticks when warning about possible literal overflow
Enabling `-fhpc` or `-finfo-table-map` would case a tick to end up
between the appliation of `neg` to its argument. This defeated the
special logic which looks for `NegApp ... (HsOverLit` to warn about
possible overflow if a user writes a negative literal (without out
NegativeLiterals) in their code.
Fixes #21701
- - - - -
f25c8d03 by Matthew Pickering at 2022-07-01T19:22:31-04:00
ci: Fix definition of slow-validate flavour (so that -dlint) is passed
In this embarassing sequence of events we were running slow-validate
without -dlint.
- - - - -
bf7991b0 by Mike Pilgrem at 2022-07-02T10:12:04-04:00
Identify the extistence of the `runhaskell` command and that it is equivalent to the `runghc` command. Add an entry to the index for `runhaskell`. See https://gitlab.haskell.org/ghc/ghc/-/issues/21411
- - - - -
9e79f6d0 by Simon Jakobi at 2022-07-02T10:12:39-04:00
Data.Foldable1: Remove references to Foldable-specific note
...as discussed in
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/8495#note_439455.
- - - - -
3a8970ac by romes at 2022-07-03T14:11:31-04:00
TTG: Move HsModule to L.H.S
Move the definition of HsModule defined in GHC.Hs to
Language.Haskell.Syntax with an added TTG parameter and corresponding
extension fields.
This is progress towards having the haskell-syntax package, as described
in #21592
- - - - -
f9f80995 by romes at 2022-07-03T14:11:31-04:00
TTG: Move ImpExp client-independent bits to L.H.S.ImpExp
Move the GHC-independent definitions from GHC.Hs.ImpExp to
Language.Haskell.Syntax.ImpExp with the required TTG extension fields
such as to keep the AST independent from GHC.
This is progress towards having the haskell-syntax package, as described
in #21592
Bumps haddock submodule
- - - - -
c43dbac0 by romes at 2022-07-03T14:11:31-04:00
Refactor ModuleName to L.H.S.Module.Name
ModuleName used to live in GHC.Unit.Module.Name. In this commit, the
definition of ModuleName and its associated functions are moved to
Language.Haskell.Syntax.Module.Name according to the current plan
towards making the AST GHC-independent.
The instances for ModuleName for Outputable, Uniquable and Binary were
moved to the module in which the class is defined because these instances
depend on GHC.
The instance of Eq for ModuleName is slightly changed to no longer
depend on unique explicitly and instead uses FastString's instance of
Eq.
- - - - -
2635c6f2 by konsumlamm at 2022-07-03T14:12:11-04:00
Expand `Ord` instance for `Down`
Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/23#issuecomment-…
- - - - -
36fba0df by Anselm Schüler at 2022-07-04T05:06:42+00:00
Add applyWhen to Data.Function per CLC prop
Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/71#issuecomment-…
- - - - -
3b13aab1 by Matthew Pickering at 2022-07-04T15:15:00-04:00
hadrian: Don't read package environments in ghc-stage1 wrapper
The stage1 compiler may be on the brink of existence and not have even a
working base library. You may have installed packages globally with a
similar stage2 compiler which will then lead to arguments such as
--show-iface not even working because you are passing too many package
flags. The solution is simple, don't read these implicit files.
Fixes #21803
- - - - -
aba482ea by Andreas Klebinger at 2022-07-04T17:55:55-04:00
Ticky:Make json info a separate field.
Fixes #21233
- - - - -
74f3867d by Matthew Pickering at 2022-07-04T17:56:30-04:00
Add docs:<pkg> command to hadrian to build docs for just one package
- - - - -
418afaf1 by Matthew Pickering at 2022-07-04T17:56:30-04:00
upload-docs: propagate publish correctly in upload_sdist
- - - - -
ed793d7a by Matthew Pickering at 2022-07-04T17:56:30-04:00
docs-upload: Fix upload script when no packages are listed
- - - - -
d002c6e0 by Matthew Pickering at 2022-07-04T17:56:30-04:00
hadrian: Add --haddock-base-url option for specifying base-url when generating docs
The motiviation for this flag is to be able to produce documentation
which is suitable for uploading for hackage, ie, the cross-package links
work correctly.
There are basically three values you want to set this to:
* off - default, base_url = ../%pkg% which works for local browsing
* on - no argument , base_url = https:://hackage.haskell.org/package/%pkg%/docs - for hackage docs upload
* on - argument, for example, base_url = http://localhost:8080/package/%pkg%/docs for testing the documentation.
The `%pkg%` string is a template variable which is replaced with the
package identifier for the relevant package.
This is one step towards fixing #21749
- - - - -
41eb749a by Matthew Pickering at 2022-07-04T17:56:31-04:00
Add nightly job for generating docs suitable for hackage upload
- - - - -
620ee7ed by Matthew Pickering at 2022-07-04T17:57:05-04:00
ghci: Support :set prompt in multi repl
This adds supports for various :set commands apart from `:set <FLAG>` in
multi repl, this includes `:set prompt` and so-on.
Fixes #21796
- - - - -
b151b65e by Matthew Pickering at 2022-07-05T16:32:31-04:00
Vendor filepath inside template-haskell
Adding filepath as a dependency of template-haskell means that it can't
be reinstalled if any build-plan depends on template-haskell.
This is a temporary solution for the 9.4 release.
A longer term solution is to split-up the template-haskell package into
the wired-in part and a non-wired-in part which can be reinstalled. This
was deemed quite risky on the 9.4 release timescale.
Fixes #21738
- - - - -
c9347ecf by John Ericson at 2022-07-05T16:33:07-04:00
Factor fields of `CoreDoSimplify` into separate data type
This avoids some partiality. The work @mmhat is doing cleaning up and
modularizing `Core.Opt` will build on this nicely.
- - - - -
d0e74992 by Eric Lindblad at 2022-07-06T01:35:48-04:00
https urls
- - - - -
803e965c by Eric Lindblad at 2022-07-06T01:35:48-04:00
options and typos
- - - - -
5519baa5 by Eric Lindblad at 2022-07-06T01:35:48-04:00
grammar
- - - - -
4ddc1d3e by Eric Lindblad at 2022-07-06T01:35:48-04:00
sources
- - - - -
c95c2026 by Matthew Pickering at 2022-07-06T01:35:48-04:00
Fix lint warnings in bootstrap.py
- - - - -
86ced2ad by romes at 2022-07-06T01:36:23-04:00
Restore Eq instance of ImportDeclQualifiedStyle
Fixes #21819
- - - - -
3547e264 by romes at 2022-07-06T13:50:27-04:00
Prune L.H.S modules of GHC dependencies
Move around datatypes, functions and instances that are GHC-specific out
of the `Language.Haskell.Syntax.*` modules to reduce the GHC
dependencies in them -- progressing towards #21592
Creates a module `Language.Haskell.Syntax.Basic` to hold basic
definitions required by the other L.H.S modules (and don't belong in any
of them)
- - - - -
e4eea07b by romes at 2022-07-06T13:50:27-04:00
TTG: Move CoreTickish out of LHS.Binds
Remove the `[CoreTickish]` fields from datatype `HsBindLR idL idR` and
move them to the extension point instance, according to the plan
outlined in #21592 to separate the base AST from the GHC specific bits.
- - - - -
acc1816b by romes at 2022-07-06T13:50:27-04:00
TTG for ForeignImport/Export
Add a TTG parameter to both `ForeignImport` and `ForeignExport` and,
according to #21592, move the GHC-specific bits in them and in the other
AST data types related to foreign imports and exports to the TTG
extension point.
- - - - -
371c5ecf by romes at 2022-07-06T13:50:27-04:00
TTG for HsTyLit
Add TTG parameter to `HsTyLit` to move the GHC-specific `SourceText`
fields to the extension point and out of the base AST.
Progress towards #21592
- - - - -
fd379d1b by romes at 2022-07-06T13:50:27-04:00
Remove many GHC dependencies from L.H.S
Continue to prune the `Language.Haskell.Syntax.*` modules out of GHC
imports according to the plan in the linked issue.
Moves more GHC-specific declarations to `GHC.*` and brings more required
GHC-independent declarations to `Language.Haskell.Syntax.*` (extending
e.g. `Language.Haskell.Syntax.Basic`).
Progress towards #21592
Bump haddock submodule for !8308
-------------------------
Metric Decrease:
hard_hole_fits
-------------------------
- - - - -
c5415bc5 by Alan Zimmerman at 2022-07-06T13:50:27-04:00
Fix exact printing of the HsRule name
Prior to this branch, the HsRule name was
XRec pass (SourceText,RuleName)
and there is an ExactPrint instance for (SourceText, RuleName).
The SourceText has moved to a different location, so synthesise the
original to trigger the correct instance when printing.
We need both the SourceText and RuleName when exact printing, as it is
possible to have a NoSourceText variant, in which case we fall back to
the FastString.
- - - - -
665fa5a7 by Matthew Pickering at 2022-07-06T13:51:03-04:00
driver: Fix issue with module loops and multiple home units
We were attempting to rehydrate all dependencies of a particular module,
but we actually only needed to rehydrate those of the current package
(as those are the ones participating in the loop).
This fixes loading GHC into a multi-unit session.
Fixes #21814
- - - - -
bbcaba6a by Andreas Klebinger at 2022-07-06T13:51:39-04:00
Remove a bogus #define from ClosureMacros.h
- - - - -
fa59223b by Tamar Christina at 2022-07-07T23:23:57-04:00
winio: make consoleReadNonBlocking not wait for any events at all.
- - - - -
42c917df by Adam Sandberg Ericsson at 2022-07-07T23:24:34-04:00
rts: allow NULL to be used as an invalid StgStablePtr
- - - - -
3739e565 by Andreas Schwab at 2022-07-07T23:25:10-04:00
RTS: Add stack marker to StgCRunAsm.S
Every object file must be properly marked for non-executable stack, even if it
contains no code.
- - - - -
a889bc05 by Ben Gamari at 2022-07-07T23:25:45-04:00
Bump unix submodule
Adds `config.sub` to unix's `.gitignore`, fixing #19574.
- - - - -
3609a478 by Matthew Pickering at 2022-07-09T11:11:58-04:00
ghci: Fix most calls to isLoaded to work in multi-mode
The most egrarious thing this fixes is the report about the total number
of loaded modules after starting a session.
Ticket #20889
- - - - -
fc183c90 by Matthew Pickering at 2022-07-09T11:11:58-04:00
Enable :edit command in ghci multi-mode.
This works after the last change to isLoaded.
Ticket #20888
- - - - -
46050534 by Simon Peyton Jones at 2022-07-09T11:12:34-04:00
Fix a scoping bug in the Specialiser
In the call to `specLookupRule` in `already_covered`, in `specCalls`,
we need an in-scope set that includes the free vars of the arguments.
But we simply were not guaranteeing that: did not include the
`rule_bndrs`.
Easily fixed. I'm not sure how how this bug has lain for quite
so long without biting us.
Fixes #21828.
- - - - -
6e8d9056 by Simon Peyton Jones at 2022-07-12T13:26:52+00:00
Edit Note [idArity varies independently of dmdTypeDepth]
...and refer to it in GHC.Core.Lint.lintLetBind.
Fixes #21452
- - - - -
89ba4655 by Simon Peyton Jones at 2022-07-12T13:26:52+00:00
Tiny documentation wibbles (comments only)
- - - - -
61a46c6d by Eric Lindblad at 2022-07-13T08:28:29-04:00
fix readme
- - - - -
61babb5e by Eric Lindblad at 2022-07-13T08:28:29-04:00
fix bootstrap
- - - - -
8b417ad5 by Eric Lindblad at 2022-07-13T08:28:29-04:00
tarball
- - - - -
e9d9f078 by Zubin Duggal at 2022-07-13T14:00:18-04:00
hie-files: Fix scopes for deriving clauses and instance signatures (#18425)
- - - - -
c4989131 by Zubin Duggal at 2022-07-13T14:00:18-04:00
hie-files: Record location of filled in default method bindings
This is useful for hie files to reconstruct the evidence that default methods
depend on.
- - - - -
9c52e7fc by Zubin Duggal at 2022-07-13T14:00:18-04:00
testsuite: Factor out common parts from hiefile tests
- - - - -
6a9e4493 by sheaf at 2022-07-13T14:00:56-04:00
Hadrian: update documentation of settings
The documentation for key-value settings was a bit out of date.
This patch updates it to account for `cabal.configure.opts` and
`hsc2hs.run.opts`.
The user-settings document was also re-arranged, to make the key-value
settings more prominent (as it doesn't involve changing the Hadrian
source code, and thus doesn't require any recompilation of Hadrian).
- - - - -
a2f142f8 by Zubin Duggal at 2022-07-13T20:43:32-04:00
Fix potential space leak that arise from ModuleGraphs retaining references
to previous ModuleGraphs, in particular the lazy `mg_non_boot` field.
This manifests in `extendMG`.
Solution: Delete `mg_non_boot` as it is only used for `mgLookupModule`, which
is only called in two places in the compiler, and should only be called at most
once for every home unit:
GHC.Driver.Make:
mainModuleSrcPath :: Maybe String
mainModuleSrcPath = do
ms <- mgLookupModule mod_graph (mainModIs hue)
ml_hs_file (ms_location ms)
GHCI.UI:
listModuleLine modl line = do
graph <- GHC.getModuleGraph
let this = GHC.mgLookupModule graph modl
Instead `mgLookupModule` can be a linear function that looks through the entire
list of `ModuleGraphNodes`
Fixes #21816
- - - - -
dcf8b30a by Ben Gamari at 2022-07-13T20:44:08-04:00
rts: Fix AdjustorPool bitmap manipulation
Previously the implementation of bitmap_first_unset assumed that
`__builtin_clz` would accept `uint8_t` however it apparently rather
extends its argument to `unsigned int`.
To fix this we simply revert to a naive implementation since handling
the various corner cases with `clz` is quite tricky. This should be
fine given that AdjustorPool isn't particularly hot. Ideally we would
have a single, optimised bitmap implementation in the RTS but I'll leave
this for future work.
Fixes #21838.
- - - - -
ad8f3e15 by Luite Stegeman at 2022-07-16T07:20:36-04:00
Change GHCi bytecode return convention for unlifted datatypes.
This changes the bytecode return convention for unlifted
algebraic datatypes to be the same as for lifted
types, i.e. ENTER/PUSH_ALTS instead of
RETURN_UNLIFTED/PUSH_ALTS_UNLIFTED
Fixes #20849
- - - - -
5434d1a3 by Colten Webb at 2022-07-16T07:21:15-04:00
Compute record-dot-syntax types
Ensures type information for record-dot-syntax
is included in HieASTs. See #21797
- - - - -
89d169ec by Colten Webb at 2022-07-16T07:21:15-04:00
Add record-dot-syntax test
- - - - -
4beb9f3c by Ben Gamari at 2022-07-16T07:21:51-04:00
Document RuntimeRep polymorphism limitations of catch#, et al
As noted in #21868, several primops accepting continuations producing
RuntimeRep-polymorphic results aren't nearly as polymorphic as their
types suggest. Document this limitation and adapt the `UnliftedWeakPtr`
test to avoid breaking this limitation in `keepAlive#`.
- - - - -
4ef1c65d by Ben Gamari at 2022-07-16T07:21:51-04:00
Make keepAlive# out-of-line
This is a naive approach to fixing the unsoundness noticed in #21708.
Specifically, we remove the lowering of `keepAlive#` via CorePrep and
instead turn it into an out-of-line primop.
This is simple, inefficient (since the continuation must now be heap
allocated), but good enough for 9.4.1. We will revisit this
(particiularly via #16098) in a future release.
Metric Increase:
T4978
T7257
T9203
- - - - -
1bbff35d by Greg Steuck at 2022-07-16T07:22:29-04:00
Suppress extra output from configure check for c++ libraries
- - - - -
3acbd7ad by Ben Gamari at 2022-07-16T07:23:04-04:00
rel-notes: Drop mention of #21745 fix
Since we have backported the fix to 9.4.1.
- - - - -
b27c2774 by Dominik Peteler at 2022-07-16T07:23:43-04:00
Align the behaviour of `dopt` and `log_dopt`
Before the behaviour of `dopt` and `logHasDumpFlag` (and the underlying
function `log_dopt`) were different as the latter did not take the
verbosity level into account. This led to problems during the
refactoring as we cannot simply replace calls to `dopt` with calls to
`logHasDumpFlag`.
In addition to that a subtle bug in the GHC module was fixed:
`setSessionDynFlags` did not update the logger and as a consequence the
verbosity value of the logger was not set appropriately.
Fixes #21861
- - - - -
28347d71 by Douglas Wilson at 2022-07-16T13:25:06-04:00
rts: forkOn context switches the target capability
Fixes #21824
- - - - -
f1c44991 by Ben Gamari at 2022-07-16T13:25:41-04:00
cmm: Eliminate orphan Outputable instances
Here we reorganize `GHC.Cmm` to eliminate the orphan `Outputable` and
`OutputableP` instances for the Cmm AST. This makes it significantly
easier to use the Cmm pretty-printers in tracing output without
incurring module import cycles.
- - - - -
f2e5e763 by Ben Gamari at 2022-07-16T13:25:41-04:00
cmm: Move toBlockList to GHC.Cmm
- - - - -
fa092745 by Ben Gamari at 2022-07-16T13:25:41-04:00
compiler: Add haddock sections to GHC.Utils.Panic
- - - - -
097759f9 by Ben Gamari at 2022-07-16T13:26:17-04:00
configure: Don't override Windows CXXFLAGS
At some point we used the clang distribution from msys2's `MINGW64`
environment for our Windows toolchain. This defaulted to using libgcc
and libstdc++ for its runtime library. However, we found for a variety
of reasons that compiler-rt, libunwind, and libc++ were more reliable,
consequently we explicitly overrode the CXXFLAGS to use these.
However, since then we have switched to use the `CLANG64` packaging,
which default to these already. Consequently we can drop these
arguments, silencing some redundant argument warnings from clang.
Fixes #21669.
- - - - -
e38a2684 by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/Elf: Check that there are no NULL ctors
- - - - -
616365b0 by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/Elf: Introduce support for invoking finalizers on unload
Addresses #20494.
- - - - -
cdd3be20 by Ben Gamari at 2022-07-16T23:50:36-04:00
testsuite: Add T20494
- - - - -
03c69d8d by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/PEi386: Rename finit field to fini
fini is short for "finalizer", which does not contain a "t".
- - - - -
033580bc by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/PEi386: Refactor handling of oc->info
Previously we would free oc->info after running initializers. However,
we can't do this is we want to also run finalizers.
Moreover, freeing oc->info so early was wrong for another reason:
we will need it in order to unregister the exception tables (see the
call to `RtlDeleteFunctionTable`).
In service of #20494.
- - - - -
f17912e4 by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/PEi386: Add finalization support
This implements #20494 for the PEi386 linker.
Happily, this also appears to fix `T9405`, resolving #21361.
- - - - -
2cd75550 by Ben Gamari at 2022-07-16T23:50:36-04:00
Loader: Implement gnu-style -l:$path syntax
Gnu ld allows `-l` to be passed an absolute file path,
signalled by a `:` prefix. Implement this in the GHC's
loader search logic.
- - - - -
5781a360 by Ben Gamari at 2022-07-16T23:50:36-04:00
Statically-link against libc++ on Windows
Unfortunately on Windows we have no RPATH-like facility, making dynamic
linking extremely fragile. Since we cannot assume that the user will
add their GHC installation to `$PATH` (and therefore their DLL
search path) we cannot assume that the loader will be able to locate our
`libc++.dll`. To avoid this, we instead statically link against `libc++.a` on
Windows.
Fixes #21435.
- - - - -
8e2e883b by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/PEi386: Ensure that all .ctors/.dtors sections are run
It turns out that PE objects may have multiple `.ctors`/`.dtors`
sections but the RTS linker had assumed that there was only one. Fix
this.
Fixes #21618.
- - - - -
fba04387 by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/PEi386: Respect dtor/ctor priority
Previously we would run constructors and destructors in arbitrary order
despite explicit priorities.
Fixes #21847.
- - - - -
1001952f by Ben Gamari at 2022-07-16T23:50:36-04:00
testsuite: Add test for #21618 and #21847
- - - - -
6f3816af by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/PEi386: Fix exception unwind unregistration
RtlDeleteFunctionTable expects a pointer to the .pdata section
yet we passed it the .xdata section.
Happily, this fixes #21354.
- - - - -
d9bff44c by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/MachO: Drop dead code
- - - - -
d161e6bc by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/MachO: Use section flags to identify initializers
- - - - -
fbb17110 by Ben Gamari at 2022-07-16T23:50:36-04:00
rts/linker/MachO: Introduce finalizer support
- - - - -
5b0ed8a8 by Ben Gamari at 2022-07-16T23:50:37-04:00
testsuite: Use system-cxx-std-lib instead of config.stdcxx_impl
- - - - -
6c476e1a by Ben Gamari at 2022-07-16T23:50:37-04:00
rts/linker/Elf: Work around GCC 6 init/fini behavior
It appears that GCC 6t (at least on i386) fails to give
init_array/fini_array sections the correct SHT_INIT_ARRAY/SHT_FINI_ARRAY
section types, instead marking them as SHT_PROGBITS. This caused T20494
to fail on Debian.
- - - - -
5f8203b8 by Ben Gamari at 2022-07-16T23:50:37-04:00
testsuite: Mark T13366Cxx as unbroken on Darwin
- - - - -
1fd2f851 by Ben Gamari at 2022-07-16T23:50:37-04:00
rts/linker: Fix resolution of __dso_handle on Darwin
Darwin expects a leading underscore.
- - - - -
a2dc00f3 by Ben Gamari at 2022-07-16T23:50:37-04:00
rts/linker: Clean up section kinds
- - - - -
aeb1a7c3 by Ben Gamari at 2022-07-16T23:50:37-04:00
rts/linker: Ensure that __cxa_finalize is called on code unload
- - - - -
028f081e by Ben Gamari at 2022-07-16T23:51:12-04:00
testsuite: Fix T11829 on Centos 7
It appears that Centos 7 has a more strict C++ compiler than most
distributions since std::runtime_error is defined in <stdexcept> rather
than <exception>. In T11829 we mistakenly imported the latter.
- - - - -
a10584e8 by Ben Gamari at 2022-07-17T22:30:32-04:00
hadrian: Rename documentation directories for consistency with make
* Rename `docs` to `doc`
* Place pdf documentation in `doc/` instead of `doc/pdfs/`
Fixes #21164.
- - - - -
b27c5947 by Anselm Schüler at 2022-07-17T22:31:11-04:00
Fix incorrect proof of applyWhen’s properties
- - - - -
eb031a5b by Matthew Pickering at 2022-07-18T08:04:47-04:00
hadrian: Add multi:<pkg> and multi targets for starting a multi-repl
This patch adds support to hadrian for starting a multi-repl containing
all the packages which stage0 can build. In particular, there is the new
user-facing command:
```
./hadrian/ghci-multi
```
which when executed will start a multi-repl containing the `ghc` package
and all it's dependencies.
This is implemented by two new hadrian targets:
```
./hadrian/build multi:<pkg>
```
Construct the arguments for a multi-repl session where the top-level
package is <pkg>. For example, `./hadrian/ghci-multi` is implemented
using `multi:ghc` target.
There is also the `multi` command which constructs a repl for everything
in stage0 which we can build.
- - - - -
19e7cac9 by Eric Lindblad at 2022-07-18T08:05:27-04:00
changelog typo
- - - - -
af6731a4 by Eric Lindblad at 2022-07-18T08:05:27-04:00
typos
- - - - -
415468fe by Simon Peyton Jones at 2022-07-18T16:36:54-04:00
Refactor SpecConstr to use treat bindings uniformly
This patch, provoked by #21457, simplifies SpecConstr by treating
top-level and nested bindings uniformly (see the new scBind).
* Eliminates the mysterious scTopBindEnv
* Refactors scBind to handle top-level and nested definitions
uniformly.
* But, for now at least, continues the status quo of not doing
SpecConstr for top-level non-recursive bindings. (In contrast
we do specialise nested non-recursive bindings, although the
original paper did not; see Note [Local let bindings].)
I tried the effect of specialising top-level non-recursive
bindings (which is now dead easy to switch on, unlike before)
but found some regressions, so I backed off. See !8135.
It's a pure refactoring. I think it'll do a better job in a few
cases, but there is no regression test.
- - - - -
d4d3fe6e by Andreas Klebinger at 2022-07-18T16:37:29-04:00
Rule matching: Don't compute the FVs if we don't look at them.
- - - - -
5f907371 by Simon Peyton Jones at 2022-07-18T16:38:04-04:00
White space only in FamInstEnv
- - - - -
ae3b3b62 by Simon Peyton Jones at 2022-07-18T16:38:04-04:00
Make transferPolyIdInfo work for CPR
I don't know why this hasn't bitten us before, but it was plain wrong.
- - - - -
9bdfdd98 by Simon Peyton Jones at 2022-07-18T16:38:04-04:00
Inline mapAccumLM
This function is called in inner loops in the compiler, and it's
overloaded and higher order. Best just to inline it.
This popped up when I was looking at something else. I think
perhaps GHC is delicately balanced on the cusp of inlining this
automatically.
- - - - -
d0b806ff by Simon Peyton Jones at 2022-07-18T16:38:04-04:00
Make SetLevels honour floatConsts
This fix, in the definition of profitableFloat,
is just for consistency. `floatConsts` should
do what it says!
I don't think it'll affect anything much, though.
- - - - -
d1c25a48 by Simon Peyton Jones at 2022-07-18T16:38:04-04:00
Refactor wantToUnboxArg a bit
* Rename GHC.Core.Opt.WorkWrap.Utils.wantToUnboxArg to canUnboxArg
and similarly wantToUnboxResult to canUnboxResult.
* Add GHC.Core.Opt.DmdAnal.wantToUnboxArg as a wrapper for
the (new) GHC.Core.Opt.WorkWrap.Utils.canUnboxArg,
avoiding some yukky duplication.
I decided it was clearer to give it a new data type for its
return type, because I nedeed the FD_RecBox case which was not
otherwise readiliy expressible.
* Add dcpc_args to WorkWrap.Utils.DataConPatContext for the payload
* Get rid of the Unlift constructor of UnboxingDecision, eliminate
two panics, and two arguments to canUnboxArg (new name). Much
nicer now.
- - - - -
6d8a715e by Teo Camarasu at 2022-07-18T16:38:44-04:00
Allow running memInventory when the concurrent nonmoving gc is enabled
If the nonmoving gc is enabled and we are using a threaded RTS,
we now try to grab the collector mutex to avoid memInventory and
the collection racing.
Before memInventory was disabled.
- - - - -
aa75bbde by Ben Gamari at 2022-07-18T16:39:20-04:00
gitignore: don't ignore all aclocal.m4 files
While GHC's own aclocal.m4 is generated by the aclocal tool, other
packages' aclocal.m4 are committed in the repository. Previously
`.gitignore` included an entry which covered *any* file named
`aclocal.m4`, which lead to quite some confusion (e.g. see #21740).
Fix this by modifying GHC's `.gitignore` to only cover GHC's own
`aclocal.m4`.
- - - - -
4b98c5ce by Boris Lykah at 2022-07-19T02:34:12-04:00
Add mapAccumM, forAccumM to Data.Traversable
Approved by Core Libraries Committee in
https://github.com/haskell/core-libraries-committee/issues/65#issuecomment-…
- - - - -
bd92182c by Ben Gamari at 2022-07-19T02:34:47-04:00
configure: Use AC_PATH_TOOL to detect tools
Previously we used AC_PATH_PROG which, as noted by #21601, does not
look for tools with a target prefix,
breaking cross-compilation.
Fixes #21601.
- - - - -
e8c07aa9 by Matthew Pickering at 2022-07-19T10:07:53-04:00
driver: Fix implementation of -S
We were failing to stop before running the assembler so the object file
was also created.
Fixes #21869
- - - - -
e2f0094c by Ben Gamari at 2022-07-19T10:08:28-04:00
rts/ProfHeap: Ensure new Censuses are zeroed
When growing the Census array ProfHeap previously neglected to
zero the new part of the array. Consequently `freeEra` would attempt to
free random words that often looked suspiciously like pointers.
Fixes #21880.
- - - - -
81d65f7f by sheaf at 2022-07-21T15:37:22+02:00
Make withDict opaque to the specialiser
As pointed out in #21575, it is not sufficient to set withDict to inline
after the typeclass specialiser, because we might inline withDict in one
module and then import it in another, and we run into the same problem.
This means we could still end up with incorrect runtime results because
the typeclass specialiser would assume that distinct typeclass evidence
terms at the same type are equal, when this is not necessarily the case
when using withDict.
Instead, this patch introduces a new magicId, 'nospec', which is only
inlined in CorePrep. We make use of it in the definition of withDict
to ensure that the typeclass specialiser does not common up distinct
typeclass evidence terms.
Fixes #21575
- - - - -
9a3e1f31 by Dominik Peteler at 2022-07-22T08:18:40-04:00
Refactored Simplify pass
* Removed references to driver from GHC.Core.LateCC, GHC.Core.Simplify
namespace and GHC.Core.Opt.Stats.
Also removed services from configuration records.
* Renamed GHC.Core.Opt.Simplify to GHC.Core.Opt.Simplify.Iteration.
* Inlined `simplifyPgm` and renamed `simplifyPgmIO` to `simplifyPgm`
and moved the Simplify driver to GHC.Core.Opt.Simplify.
* Moved `SimplMode` and `FloatEnable` to GHC.Core.Opt.Simplify.Env.
* Added a configuration record `TopEnvConfig` for the `SimplTopEnv` environment
in GHC.Core.Opt.Simplify.Monad.
* Added `SimplifyOpts` and `SimplifyExprOpts`. Provide initialization functions
for those in a new module GHC.Driver.Config.Core.Opt.Simplify.
Also added initialization functions for `SimplMode` to that module.
* Moved `CoreToDo` and friends to a new module GHC.Core.Pipeline.Types
and the counting types and functions (`SimplCount` and `Tick`) to new
module GHC.Core.Opt.Stats.
* Added getter functions for the fields of `SimplMode`. The pedantic bottoms
option and the platform are retrieved from the ArityOpts and RuleOpts and the
getter functions allow us to retrieve values from `SpecEnv` without the
knowledge where the data is stored exactly.
* Moved the coercion optimization options from the top environment to
`SimplMode`. This way the values left in the top environment are those
dealing with monadic functionality, namely logging, IO related stuff and
counting. Added a note "The environments of the Simplify pass".
* Removed `CoreToDo` from GHC.Core.Lint and GHC.CoreToStg.Prep and got rid of
`CoreDoSimplify`. Pass `SimplifyOpts` in the `CoreToDo` type instead.
* Prep work before removing `InteractiveContext` from `HscEnv`.
- - - - -
2c5991cc by Simon Peyton Jones at 2022-07-22T08:18:41-04:00
Make the specialiser deal better with specialised methods
This patch fixes #21848, by being more careful to update unfoldings
in the type-class specialiser.
See the new Note [Update unfolding after specialisation]
Now that we are being so much more careful about unfoldings,
it turned out that I could dispense with se_interesting, and
all its tricky corners. Hooray. This fixes #21368.
- - - - -
ae166635 by Ben Gamari at 2022-07-22T08:18:41-04:00
ghc-boot: Clean up UTF-8 codecs
In preparation for moving the UTF-8 codecs into `base`:
* Move them to GHC.Utils.Encoding.UTF8
* Make names more consistent
* Add some Haddocks
- - - - -
e8ac91db by Ben Gamari at 2022-07-22T08:18:41-04:00
base: Introduce GHC.Encoding.UTF8
Here we copy a subset of the UTF-8 implementation living in `ghc-boot`
into `base`, with the intent of dropping the former in the future. For
this reason, the `ghc-boot` copy is now CPP-guarded on
`MIN_VERSION_base(4,18,0)`.
Naturally, we can't copy *all* of the functions defined by `ghc-boot` as
some depend upon `bytestring`; we rather just copy those which only
depend upon `base` and `ghc-prim`.
Further consolidation?
----------------------
Currently GHC ships with at least five UTF-8 implementations:
* the implementation used by GHC in `ghc-boot:GHC.Utils.Encoding`; this
can be used at a number of types including `Addr#`, `ByteArray#`,
`ForeignPtr`, `Ptr`, `ShortByteString`, and `ByteString`. Most of this
can be removed in GHC 9.6+2, when the copies in `base` will become
available to `ghc-boot`.
* the copy of the `ghc-boot` definition now exported by
`base:GHC.Encoding.UTF8`. This can be used at `Addr#`, `Ptr`,
`ByteArray#`, and `ForeignPtr`
* the decoder used by `unpackCStringUtf8#` in `ghc-prim:GHC.CString`;
this is specialised at `Addr#`.
* the codec used by the IO subsystem in `base:GHC.IO.Encoding.UTF8`;
this is specialised at `Addr#` but, unlike the above, supports
recovery in the presence of partial codepoints (since in IO contexts
codepoints may be broken across buffers)
* the implementation provided by the `text` library
This does seem a tad silly. On the other hand, these implementations
*do* materially differ from one another (e.g. in the types they support,
the detail in errors they can report, and the ability to recover from
partial codepoints). Consequently, it's quite unclear that further
consolidate would be worthwhile.
- - - - -
f9ad8025 by Ben Gamari at 2022-07-22T08:18:41-04:00
Add a Note summarising GHC's UTF-8 implementations
GHC has a somewhat dizzying array of UTF-8 implementations. This note
describes why this is the case.
- - - - -
72dfad3d by Ben Gamari at 2022-07-22T08:18:42-04:00
upload_ghc_libs: Fix path to documentation
The documentation was moved in a10584e8df9b346cecf700b23187044742ce0b35
but this one occurrence was note updated.
Finally closes #21164.
- - - - -
a8b150e7 by sheaf at 2022-07-22T08:18:44-04:00
Add test for #21871
This adds a test for #21871, which was fixed by the No Skolem Info
rework (MR !7105).
Fixes #21871
- - - - -
6379f942 by sheaf at 2022-07-22T08:18:46-04:00
Add test for #21360
The way record updates are typechecked/desugared changed in MR !7981.
Because we desugar in the typechecker to a simple case expression, the
pattern match checker becomes able to spot the long-distance information
and avoid emitting an incorrect pattern match warning.
Fixes #21360
- - - - -
ce0cd12c by sheaf at 2022-07-22T08:18:47-04:00
Hadrian: don't try to build "unix" on Windows
- - - - -
dc27e15a by Simon Peyton Jones at 2022-07-25T09:42:01-04:00
Implement DeepSubsumption
This MR adds the language extension -XDeepSubsumption, implementing
GHC proposal #511. This change mitigates the impact of GHC proposal
The changes are highly localised, by design. See Note [Deep subsumption]
in GHC.Tc.Utils.Unify.
The main changes are:
* Add -XDeepSubsumption, which is on by default in Haskell98 and Haskell2010,
but off in Haskell2021.
-XDeepSubsumption largely restores the behaviour before the "simple subsumption" change.
-XDeepSubsumpition has a similar flavour as -XNoMonoLocalBinds:
it makes type inference more complicated and less predictable, but it
may be convenient in practice.
* The main changes are in:
* GHC.Tc.Utils.Unify.tcSubType, which does deep susumption and eta-expanansion
* GHC.Tc.Utils.Unify.tcSkolemiseET, which does deep skolemisation
* In GHC.Tc.Gen.App.tcApp we call tcSubTypeNC to match the result
type. Without deep subsumption, unifyExpectedType would be sufficent.
See Note [Deep subsumption] in GHC.Tc.Utils.Unify.
* There are no changes to Quick Look at all.
* The type of `withDict` becomes ambiguous; so add -XAllowAmbiguousTypes to
GHC.Magic.Dict
* I fixed a small but egregious bug in GHC.Core.FVs.varTypeTyCoFVs, where
we'd forgotten to take the free vars of the multiplicity of an Id.
* I also had to fix tcSplitNestedSigmaTys
When I did the shallow-subsumption patch
commit 2b792facab46f7cdd09d12e79499f4e0dcd4293f
Date: Sun Feb 2 18:23:11 2020 +0000
Simple subsumption
I changed tcSplitNestedSigmaTys to not look through function arrows
any more. But that was actually an un-forced change. This function
is used only in
* Improving error messages in GHC.Tc.Gen.Head.addFunResCtxt
* Validity checking for default methods: GHC.Tc.TyCl.checkValidClass
* A couple of calls in the GHCi debugger: GHC.Runtime.Heap.Inspect
All to do with validity checking and error messages. Acutally its
fine to look under function arrows here, and quite useful a test
DeepSubsumption05 (a test motivated by a build failure in the
`lens` package) shows.
The fix is easy. I added Note [tcSplitNestedSigmaTys].
- - - - -
e31ead39 by Matthew Pickering at 2022-07-25T09:42:01-04:00
Add tests that -XHaskell98 and -XHaskell2010 enable DeepSubsumption
- - - - -
67189985 by Matthew Pickering at 2022-07-25T09:42:01-04:00
Add DeepSubsumption08
- - - - -
5e93a952 by Simon Peyton Jones at 2022-07-25T09:42:01-04:00
Fix the interaction of operator sections and deep subsumption
Fixes DeepSubsumption08
- - - - -
918620d9 by Zubin Duggal at 2022-07-25T09:42:01-04:00
Add DeepSubsumption09
- - - - -
2a773259 by Gabriella Gonzalez at 2022-07-25T09:42:40-04:00
Default implementation for mempty/(<>)
Approved by: https://github.com/haskell/core-libraries-committee/issues/61
This adds a default implementation for `mempty` and `(<>)` along
with a matching `MINIMAL` pragma so that `Semigroup` and `Monoid`
instances can be defined in terms of `sconcat` / `mconcat`.
The description for each class has also been updated to include the
equivalent set of laws for the `sconcat`-only / `mconcat`-only
instances.
- - - - -
73836fc8 by Bryan Richter at 2022-07-25T09:43:16-04:00
ci: Disable (broken) perf-nofib
See #21859
- - - - -
c24ca5c3 by sheaf at 2022-07-25T09:43:58-04:00
Docs: clarify ConstraintKinds infelicity
GHC doesn't consistently require the ConstraintKinds extension to
be enabled, as it allows programs such as type families returning
a constraint without this extension.
MR !7784 fixes this infelicity, but breaking user programs was deemed
to not be worth it, so we document it instead.
Fixes #21061.
- - - - -
5f2fbd5e by Simon Peyton Jones at 2022-07-25T09:44:34-04:00
More improvements to worker/wrapper
This patch fixes #21888, and simplifies finaliseArgBoxities
by eliminating the (recently introduced) data type FinalDecision.
A delicate interaction meant that this patch
commit d1c25a48154236861a413e058ea38d1b8320273f
Date: Tue Jul 12 16:33:46 2022 +0100
Refactor wantToUnboxArg a bit
make worker/wrapper go into an infinite loop. This patch
fixes it by narrowing the handling of case (B) of
Note [Boxity for bottoming functions], to deal only the
arguemnts that are type variables. Only then do we drop
the trimBoxity call, which is what caused the bug.
I also
* Added documentation of case (B), which was previously
completely un-mentioned. And a regression test,
T21888a, to test it.
* Made unboxDeeplyDmd stop at lazy demands. It's rare anyway
for a bottoming function to have a lazy argument (mainly when
the data type is recursive and then we don't want to unbox
deeply). Plus there is Note [No lazy, Unboxed demands in
demand signature]
* Refactored the Case equation for dmdAnal a bit, to do less
redundant pattern matching.
- - - - -
b77d95f8 by Simon Peyton Jones at 2022-07-25T09:45:09-04:00
Fix a small buglet in tryEtaReduce
Gergo points out (#21801) that GHC.Core.Opt.Arity.tryEtaReduce was
making an ill-formed cast. It didn't matter, because the subsequent
guard discarded it; but still worth fixing. Spurious warnings are
distracting.
- - - - -
3bbde957 by Zubin Duggal at 2022-07-25T09:45:45-04:00
Fix #21889, GHCi misbehaves with Ctrl-C on Windows
On Windows, we create multiple levels of wrappers for GHCi which ultimately
execute ghc --interactive. In order to handle console events properly, each of
these wrappers must call FreeConsole() in order to hand off event processing to
the child process. See #14150.
In addition to this, FreeConsole must only be called from interactive processes (#13411).
This commit makes two changes to fix this situation:
1. The hadrian wrappers generated using `hadrian/bindist/cwrappers/version-wrapper.c` call `FreeConsole`
if the CPP flag INTERACTIVE_PROCESS is set, which is set when we are generating a wrapper for GHCi.
2. The GHCi wrapper in `driver/ghci/` calls the `ghc-$VER.exe` executable which is not wrapped rather
than calling `ghc.exe` is is wrapped on windows (and usually non-interactive, so can't call `FreeConsole`:
Before:
ghci-$VER.exe calls ghci.exe which calls ghc.exe which calls ghc-$VER.exe
After:
ghci-$VER.exe calls ghci.exe which calls ghc-$VER.exe
- - - - -
79f1b021 by Simon Jakobi at 2022-07-25T09:46:21-04:00
docs: Fix documentation of \cases
Fixes #21902.
- - - - -
e4bf9592 by sternenseemann at 2022-07-25T09:47:01-04:00
ghc-cabal: allow Cabal 3.8 to unbreak make build
When bootstrapping GHC 9.4.*, the build will fail when configuring
ghc-cabal as part of the make based build system due to this upper
bound, as Cabal has been updated to a 3.8 release.
Reference #21914, see especially
https://gitlab.haskell.org/ghc/ghc/-/issues/21914#note_444699
- - - - -
726d938e by Simon Peyton Jones at 2022-07-25T14:38:14-04:00
Fix isEvaldUnfolding and isValueUnfolding
This fixes (1) in #21831. Easy, obviously correct.
- - - - -
5d26c321 by Simon Peyton Jones at 2022-07-25T14:38:14-04:00
Switch off eta-expansion in rules and unfoldings
I think this change will make little difference except to reduce
clutter. But that's it -- if it causes problems we can switch it
on again.
- - - - -
d4fe2f4e by Simon Peyton Jones at 2022-07-25T14:38:14-04:00
Teach SpecConstr about typeDeterminesValue
This patch addresses #21831, point 2. See
Note [generaliseDictPats] in SpecConstr
I took the opportunity to refactor the construction of specialisation
rules a bit, so that the rule name says what type we are specialising
at.
Surprisingly, there's a 20% decrease in compile time for test
perf/compiler/T18223. I took a look at it, and the code size seems the
same throughout. I did a quick ticky profile which seemed to show a
bit less substitution going on. Hmm. Maybe it's the "don't do
eta-expansion in stable unfoldings" patch, which is part of the
same MR as this patch.
Anyway, since it's a move in the right direction, I didn't think it
was worth looking into further.
Metric Decrease:
T18223
- - - - -
65f7838a by Simon Peyton Jones at 2022-07-25T14:38:14-04:00
Add a 'notes' file in testsuite/tests/perf/compiler
This file is just a place to accumlate notes about particular
benchmarks, so that I don't keep re-inventing the wheel.
- - - - -
61faff40 by Simon Peyton Jones at 2022-07-25T14:38:50-04:00
Get the in-scope set right in FamInstEnv.injectiveBranches
There was an assert error, as Gergo pointed out in #21896.
I fixed this by adding an InScopeSet argument to tcUnifyTyWithTFs.
And also to GHC.Core.Unify.niFixTCvSubst.
I also took the opportunity to get a couple more InScopeSets right,
and to change some substTyUnchecked into substTy.
This MR touches a lot of other files, but only because I also took the
opportunity to introduce mkInScopeSetList, and use it.
- - - - -
4a7256a7 by Cheng Shao at 2022-07-25T20:41:55+00:00
Add location to cc phase
- - - - -
96811ba4 by Cheng Shao at 2022-07-25T20:41:55+00:00
Avoid as pipeline when compiling c
- - - - -
2869b66d by Cheng Shao at 2022-07-25T20:42:20+00:00
testsuite: Skip test cases involving -S when testing unregisterised GHC
We no longer generate .s files anyway.
Metric Decrease:
MultiLayerModules
T10421
T13035
T13701
T14697
T16875
T18140
T18304
T18923
T9198
- - - - -
82a0991a by Ben Gamari at 2022-07-25T23:32:05-04:00
testsuite: introduce nonmoving_thread_sanity way
(cherry picked from commit 19f8fce3659de3d72046bea9c61d1a82904bc4ae)
- - - - -
4b087973 by Ben Gamari at 2022-07-25T23:32:06-04:00
rts/nonmoving: Track segment state
It can often be useful during debugging to be able to determine the
state of a nonmoving segment. Introduce some state, enabled by DEBUG, to
track this.
(cherry picked from commit 40e797ef591ae3122ccc98ab0cc3cfcf9d17bd7f)
- - - - -
54a5c32d by Ben Gamari at 2022-07-25T23:32:06-04:00
rts/nonmoving: Don't scavenge objects which weren't evacuated
This fixes a rather subtle bug in the logic responsible for scavenging
objects evacuated to the non-moving generation. In particular, objects
can be allocated into the non-moving generation by two ways:
a. evacuation out of from-space by the garbage collector
b. direct allocation by the mutator
Like all evacuation, objects moved by (a) must be scavenged, since they
may contain references to other objects located in from-space. To
accomplish this we have the following scheme:
* each nonmoving segment's block descriptor has a scan pointer which
points to the first object which has yet to be scavenged
* the GC tracks a set of "todo" segments which have pending scavenging
work
* to scavenge a segment, we scavenge each of the unmarked blocks
between the scan pointer and segment's `next_free` pointer.
We skip marked blocks since we know the allocator wouldn't have
allocated into marked blocks (since they contain presumably live
data).
We can stop at `next_free` since, by
definition, the GC could not have evacuated any objects to blocks
above `next_free` (otherwise `next_free wouldn't be the first free
block).
However, this neglected to consider objects allocated by path (b).
In short, the problem is that objects directly allocated by the mutator
may become unreachable (but not swept, since the containing segment is
not yet full), at which point they may contain references to swept objects.
Specifically, we observed this in #21885 in the following way:
1. the mutator (specifically in #21885, a `lockCAF`) allocates an object
(specifically a blackhole, which here we will call `blkh`; see Note
[Static objects under the nonmoving collector] for the reason why) on
the non-moving heap. The bitmap of the allocated block remains 0
(since allocation doesn't affect the bitmap) and the containing
segment's (which we will call `blkh_seg`) `next_free` is advanced.
2. We enter the blackhole, evaluating the blackhole to produce a result
(specificaly a cons cell) in the nursery
3. The blackhole gets updated into an indirection pointing to the cons
cell; it is pushed to the generational remembered set
4. we perform a GC, the cons cell is evacuated into the nonmoving heap
(into segment `cons_seg`)
5. the cons cell is marked
6. the GC concludes
7. the CAF and blackhole become unreachable
8. `cons_seg` is filled
9. we start another GC; the cons cell is swept
10. we start a new GC
11. something is evacuated into `blkh_seg`, adding it to the "todo" list
12. we attempt to scavenge `blkh_seg` (namely, all unmarked blocks
between `scan` and `next_free`, which includes `blkh`). We attempt to
evacuate `blkh`'s indirectee, which is the previously-swept cons cell.
This is unsafe, since the indirectee is no longer a valid heap
object.
The problem here was that the scavenging logic *assumed* that (a) was
the only source of allocations into the non-moving heap and therefore
*all* unmarked blocks between `scan` and `next_free` were evacuated.
However, due to (b) this is not true.
The solution is to ensure that that the scanned region only encompasses
the region of objects allocated during evacuation. We do this by
updating `scan` as we push the segment to the todo-segment list to
point to the block which was evacuated into.
Doing this required changing the nonmoving scavenging implementation's
update of the `scan` pointer to bump it *once*, instead of after
scavenging each block as was done previously. This is because we may end
up evacuating into the segment being scavenged as we scavenge it. This
was quite tricky to discover but the result is quite simple,
demonstrating yet again that global mutable state should be used
exceedingly sparingly.
Fixes #21885
(cherry picked from commit 0b27ea23efcb08639309293faf13fdfef03f1060)
- - - - -
25c24535 by Ben Gamari at 2022-07-25T23:32:06-04:00
testsuite: Skip a few tests as in the nonmoving collector
Residency monitoring under the non-moving collector is quite
conservative (e.g. the reported value is larger than reality) since
otherwise we would need to block on concurrent collection. Skip a few
tests that are sensitive to residency.
(cherry picked from commit 6880e4fbf728c04e8ce83e725bfc028fcb18cd70)
- - - - -
42147534 by sternenseemann at 2022-07-26T16:26:53-04:00
hadrian: add flag disabling selftest rules which require QuickCheck
The hadrian executable depends on QuickCheck for building, meaning this
library (and its dependencies) will need to be built for bootstrapping
GHC in the future. Building QuickCheck, however, can require
TemplateHaskell. When building a statically linking GHC toolchain,
TemplateHaskell can be tricky to get to work, and cross-compiling
TemplateHaskell doesn't work at all without -fexternal-interpreter,
so QuickCheck introduces an element of fragility to GHC's bootstrap.
Since the selftest rules are the only part of hadrian that need
QuickCheck, we can easily eliminate this bootstrap dependency when
required by introducing a `selftest` flag guarding the rules' inclusion.
Closes #8699.
- - - - -
9ea29d47 by Simon Peyton Jones at 2022-07-26T16:27:28-04:00
Regression test for #21848
- - - - -
ef30e215 by Matthew Pickering at 2022-07-28T13:56:59-04:00
driver: Don't create LinkNodes when -no-link is enabled
Fixes #21866
- - - - -
fc23b5ed by sheaf at 2022-07-28T13:57:38-04:00
Docs: fix mistaken claim about kind signatures
This patch fixes #21806 by rectifying an incorrect claim about
the usage of kind variables in the header of a data declaration with
a standalone kind signature.
It also adds some clarifications about the number of parameters expected
in GADT declarations and in type family declarations.
- - - - -
2df92ee1 by Matthew Pickering at 2022-08-02T05:20:01-04:00
testsuite: Correctly set withNativeCodeGen
Fixes #21918
- - - - -
f2912143 by Matthew Pickering at 2022-08-02T05:20:45-04:00
Fix since annotations in GHC.Stack.CloneStack
Fixes #21894
- - - - -
aeb8497d by Andreas Klebinger at 2022-08-02T19:26:51-04:00
Add -dsuppress-coercion-types to make coercions even smaller.
Instead of `` `cast` <Co:11> :: (Some -> Really -> Large Type)``
simply print `` `cast` <Co:11> :: ... ``
- - - - -
97655ad8 by sheaf at 2022-08-02T19:27:29-04:00
User's guide: fix typo in hasfield.rst
Fixes #21950
- - - - -
35aef18d by Yiyun Liu at 2022-08-04T02:55:07-04:00
Remove TCvSubst and use Subst for both term and type-level subst
This patch removes the TCvSubst data type and instead uses Subst as
the environment for both term and type level substitution. This
change is partially motivated by the existential type proposal,
which will introduce types that contain expressions and therefore
forces us to carry around an "IdSubstEnv" even when substituting for
types. It also reduces the amount of code because "Subst" and
"TCvSubst" share a lot of common operations. There isn't any
noticeable impact on performance (geo. mean for ghc/alloc is around
0.0% but we have -94 loc and one less data type to worry abount).
Currently, the "TCvSubst" data type for substitution on types is
identical to the "Subst" data type except the former doesn't store
"IdSubstEnv". Using "Subst" for type-level substitution means there
will be a redundant field stored in the data type. However, in cases
where the substitution starts from the expression, using "Subst" for
type-level substitution saves us from having to project "Subst" into a
"TCvSubst". This probably explains why the allocation is mostly even
despite the redundant field.
The patch deletes "TCvSubst" and moves "Subst" and its relevant
functions from "GHC.Core.Subst" into "GHC.Core.TyCo.Subst".
Substitution on expressions is still defined in "GHC.Core.Subst" so we
don't have to expose the definition of "Expr" in the hs-boot file that
"GHC.Core.TyCo.Subst" must import to refer to "IdSubstEnv" (whose
codomain is "CoreExpr"). Most functions named fooTCvSubst are renamed
into fooSubst with a few exceptions (e.g. "isEmptyTCvSubst" is a
distinct function from "isEmptySubst"; the former ignores the
emptiness of "IdSubstEnv"). These exceptions mainly exist for
performance reasons and will go away when "Expr" and "Type" are
mutually recursively defined (we won't be able to take those
shortcuts if we can't make the assumption that expressions don't
appear in types).
- - - - -
b99819bd by Krzysztof Gogolewski at 2022-08-04T02:55:43-04:00
Fix TH + defer-type-errors interaction (#21920)
Previously, we had to disable defer-type-errors in splices because of #7276.
But this fix is no longer necessary, the test T7276 no longer segfaults
and is now correctly deferred.
- - - - -
fb529cae by Andreas Klebinger at 2022-08-04T13:57:25-04:00
Add a note about about W/W for unlifting strict arguments
This fixes #21236.
- - - - -
fffc75a9 by Matthew Pickering at 2022-08-04T13:58:01-04:00
Force safeInferred to avoid retaining extra copy of DynFlags
This will only have a (very) modest impact on memory but we don't want
to retain old copies of DynFlags hanging around so best to force this
value.
- - - - -
0f43837f by Matthew Pickering at 2022-08-04T13:58:01-04:00
Force name selectors to ensure no reference to Ids enter the NameCache
I observed some unforced thunks in the NameCache which were retaining a
whole Id, which ends up retaining a Type.. which ends up retaining old
copies of HscEnv containing stale HomeModInfo.
- - - - -
0b1f5fd1 by Matthew Pickering at 2022-08-04T13:58:01-04:00
Fix leaks in --make mode when there are module loops
This patch fixes quite a tricky leak where we would end up retaining
stale ModDetails due to rehydrating modules against non-finalised
interfaces.
== Loops with multiple boot files
It is possible for a module graph to have a loop (SCC, when ignoring boot files)
which requires multiple boot files to break. In this case we must perform the
necessary hydration steps before and after compiling modules which have boot files
which are described above for corectness but also perform an additional hydration step
at the end of the SCC to remove space leaks.
Consider the following example:
┌───────┐ ┌───────┐
│ │ │ │
│ A │ │ B │
│ │ │ │
└─────┬─┘ └───┬───┘
│ │
┌────▼─────────▼──┐
│ │
│ C │
└────┬─────────┬──┘
│ │
┌────▼──┐ ┌───▼───┐
│ │ │ │
│ A-boot│ │ B-boot│
│ │ │ │
└───────┘ └───────┘
A, B and C live together in a SCC. Say we compile the modules in order
A-boot, B-boot, C, A, B then when we compile A we will perform the hydration steps
(because A has a boot file). Therefore C will be hydrated relative to A, and the
ModDetails for A will reference C/A. Then when B is compiled C will be rehydrated again,
and so B will reference C/A,B, its interface will be hydrated relative to both A and B.
Now there is a space leak because say C is a very big module, there are now two different copies of
ModDetails kept alive by modules A and B.
The way to avoid this space leak is to rehydrate an entire SCC together at the
end of compilation so that all the ModDetails point to interfaces for .hs files.
In this example, when we hydrate A, B and C together then both A and B will refer to
C/A,B.
See #21900 for some more discussion.
-------------------------------------------------------
In addition to this simple case, there is also the potential for a leak
during parallel upsweep which is also fixed by this patch. Transcibed is
Note [ModuleNameSet, efficiency and space leaks]
Note [ModuleNameSet, efficiency and space leaks]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
During unsweep the results of compiling modules are placed into a MVar, to find
the environment the module needs to compile itself in the MVar is consulted and
the HomeUnitGraph is set accordingly. The reason we do this is that precisely tracking
module dependencies and recreating the HUG from scratch each time is very expensive.
In serial mode (-j1), this all works out fine because a module can only be compiled after
its dependencies have finished compiling and not interleaved with compiling module loops.
Therefore when we create the finalised or no loop interfaces, the HUG only contains
finalised interfaces.
In parallel mode, we have to be more careful because the HUG variable can contain
non-finalised interfaces which have been started by another thread. In order to avoid
a space leak where a finalised interface is compiled against a HPT which contains a
non-finalised interface we have to restrict the HUG to only the visible modules.
The visible modules is recording in the ModuleNameSet, this is propagated upwards
whilst compiling and explains which transitive modules are visible from a certain point.
This set is then used to restrict the HUG before the module is compiled to only
the visible modules and thus avoiding this tricky space leak.
Efficiency of the ModuleNameSet is of utmost importance because a union occurs for
each edge in the module graph. Therefore the set is represented directly as an IntSet
which provides suitable performance, even using a UniqSet (which is backed by an IntMap) is
too slow. The crucial test of performance here is the time taken to a do a no-op build in --make mode.
See test "jspace" for an example which used to trigger this problem.
Fixes #21900
- - - - -
1d94a59f by Matthew Pickering at 2022-08-04T13:58:01-04:00
Store interfaces in ModIfaceCache more directly
I realised hydration was completely irrelavant for this cache because
the ModDetails are pruned from the result. So now it simplifies things a
lot to just store the ModIface and Linkable, which we can put into the
cache straight away rather than wait for the final version of a
HomeModInfo to appear.
- - - - -
6c7cd50f by Cheng Shao at 2022-08-04T23:01:45-04:00
cmm: Remove unused ReadOnlyData16
We don't actually emit rodata16 sections anywhere.
- - - - -
16333ad7 by Andreas Klebinger at 2022-08-04T23:02:20-04:00
findExternalRules: Don't needlessly traverse the list of rules.
- - - - -
52c15674 by Krzysztof Gogolewski at 2022-08-05T12:47:05-04:00
Remove backported items from 9.6 release notes
They have been backported to 9.4 in commits 5423d84bd9a28f,
13c81cb6be95c5, 67ccbd6b2d4b9b.
- - - - -
78d232f5 by Matthew Pickering at 2022-08-05T12:47:40-04:00
ci: Fix pages job
The job has been failing because we don't bundle haddock docs anymore in
the docs dist created by hadrian.
Fixes #21789
- - - - -
037bc9c9 by Ben Gamari at 2022-08-05T22:00:29-04:00
codeGen/X86: Don't clobber switch variable in switch generation
Previously ce8745952f99174ad9d3bdc7697fd086b47cdfb5 assumed that it was
safe to clobber the switch variable when generating code for a jump
table since we were at the end of a block. However, this assumption is
wrong; the register could be live in the jump target.
Fixes #21968.
- - - - -
50c8e1c5 by Matthew Pickering at 2022-08-05T22:01:04-04:00
Fix equality operator in jspace test
- - - - -
e9c77a22 by Andreas Klebinger at 2022-08-06T06:13:17-04:00
Improve BUILD_PAP comments
- - - - -
41234147 by Andreas Klebinger at 2022-08-06T06:13:17-04:00
Make dropTail comment a haddock comment
- - - - -
ff11d579 by Andreas Klebinger at 2022-08-06T06:13:17-04:00
Add one more sanity check in stg_restore_cccs
- - - - -
1f6c56ae by Andreas Klebinger at 2022-08-06T06:13:17-04:00
StgToCmm: Fix isSimpleScrut when profiling is enabled.
When profiling is enabled we must enter functions that might represent
thunks in order for their sccs to show up in the profile.
We might allocate even if the function is already evaluated in this
case. So we can't consider any potential function thunk to be a simple
scrut when profiling.
Not doing so caused profiled binaries to segfault.
- - - - -
fab0ee93 by Andreas Klebinger at 2022-08-06T06:13:17-04:00
Change `-fprof-late` to insert cost centres after unfolding creation.
The former behaviour of adding cost centres after optimization but
before unfoldings are created is not available via the flag
`prof-late-inline` instead.
I also reduced the overhead of -fprof-late* by pushing the cost centres
into lambdas. This means the cost centres will only account for
execution of functions and not their partial application.
Further I made LATE_CC cost centres it's own CC flavour so they now
won't clash with user defined ones if a user uses the same string for
a custom scc.
LateCC: Don't put cost centres inside constructor workers.
With -fprof-late they are rarely useful as the worker is usually
inlined. Even if the worker is not inlined or we use -fprof-late-linline
they are generally not helpful but bloat compile and run time
significantly. So we just don't add sccs inside constructor workers.
-------------------------
Metric Decrease:
T13701
-------------------------
- - - - -
f8bec4e3 by Ben Gamari at 2022-08-06T06:13:53-04:00
gitlab-ci: Fix hadrian bootstrapping of release pipelines
Previously we would attempt to test hadrian bootstrapping in the
`validate` build flavour. However, `ci.sh` refuses to run validation
builds during release pipelines, resulting in job failures. Fix this by
testing bootstrapping in the `release` flavour during release pipelines.
We also attempted to record perf notes for these builds, which is
redundant work and undesirable now since we no longer build in a
consistent flavour.
- - - - -
c0348865 by Ben Gamari at 2022-08-06T11:45:17-04:00
compiler: Eliminate two uses of foldr in favor of foldl'
These two uses constructed maps, which is a case where foldl' is
generally more efficient since we avoid constructing an intermediate
O(n)-depth stack.
- - - - -
d2e4e123 by Ben Gamari at 2022-08-06T11:45:17-04:00
rts: Fix code style
- - - - -
57f530d3 by Ben Gamari at 2022-08-06T11:45:17-04:00
genprimopcode: Drop ArrayArray# references
As ArrayArray# no longer exists
- - - - -
7267cd52 by Ben Gamari at 2022-08-06T11:45:17-04:00
base: Organize Haddocks in GHC.Conc.Sync
- - - - -
aa818a9f by Ben Gamari at 2022-08-06T11:48:50-04:00
Add primop to list threads
A user came to #ghc yesterday wondering how best to check whether they
were leaking threads. We ended up using the eventlog but it seems to me
like it would be generally useful if Haskell programs could query their
own threads.
- - - - -
6d1700b6 by Ben Gamari at 2022-08-06T11:51:35-04:00
rts: Move thread labels into TSO
This eliminates the thread label HashTable and instead tracks this
information in the TSO, allowing us to use proper StgArrBytes arrays for
backing the label and greatly simplifying management of object lifetimes
when we expose them to the user with the coming `threadLabel#` primop.
- - - - -
1472044b by Ben Gamari at 2022-08-06T11:54:52-04:00
Add a primop to query the label of a thread
- - - - -
43f2b271 by Ben Gamari at 2022-08-06T11:55:14-04:00
base: Share finalization thread label
For efficiency's sake we float the thread label assigned to the
finalization thread to the top-level, ensuring that we only need to
encode the label once.
- - - - -
1d63b4fb by Ben Gamari at 2022-08-06T11:57:11-04:00
users-guide: Add release notes entry for thread introspection support
- - - - -
09bca1de by Ben Gamari at 2022-08-07T01:19:35-04:00
hadrian: Fix binary distribution install attributes
Previously we would use plain `cp` to install various parts of the
binary distribution. However, `cp`'s behavior w.r.t. file attributes is
quite unclear; for this reason it is much better to rather use
`install`.
Fixes #21965.
- - - - -
2b8ea16d by Ben Gamari at 2022-08-07T01:19:35-04:00
hadrian: Fix installation of system-cxx-std-lib package conf
- - - - -
7b514848 by Ben Gamari at 2022-08-07T01:20:10-04:00
gitlab-ci: Bump Docker images
To give the ARMv7 job access to lld, fixing #21875.
- - - - -
afa584a3 by Ben Gamari at 2022-08-07T05:08:52-04:00
hadrian: Don't use mk/config.mk.in
Ultimately we want to drop mk/config.mk so here I extract the bits
needed by the Hadrian bindist installation logic into a Hadrian-specific
file. While doing this I fixed binary distribution installation, #21901.
- - - - -
b9bb45d7 by Ben Gamari at 2022-08-07T05:08:52-04:00
hadrian: Fix naming of cross-compiler wrappers
- - - - -
78d04cfa by Ben Gamari at 2022-08-07T11:44:58-04:00
hadrian: Extend xattr Darwin hack to cover /lib
As noted in #21506, it is now necessary to remove extended attributes
from `/lib` as well as `/bin` to avoid SIP issues on Darwin.
Fixes #21506.
- - - - -
20457d77 by Andreas Klebinger at 2022-08-08T14:42:26+02:00
NCG(x86): Compile add+shift as lea if possible.
- - - - -
742292e4 by Andreas Klebinger at 2022-08-08T16:46:37-04:00
dataToTag#: Skip runtime tag check if argument is infered tagged
This addresses one part of #21710.
- - - - -
1504a93e by Cheng Shao at 2022-08-08T16:47:14-04:00
rts: remove redundant stg_traceCcszh
This out-of-line primop has no Haskell wrapper and hasn't been used
anywhere in the tree. Furthermore, the code gets in the way of !7632, so
it should be garbage collected.
- - - - -
a52de3cb by Andreas Klebinger at 2022-08-08T16:47:50-04:00
Document a divergence from the report in parsing function lhss.
GHC is happy to parse `(f) x y = x + y` when it should be a parse error
based on the Haskell report. Seems harmless enough so we won't fix it
but it's documented now.
Fixes #19788
- - - - -
5765e133 by Ben Gamari at 2022-08-08T16:48:25-04:00
gitlab-ci: Add release job for aarch64/debian 11
- - - - -
5b26f324 by Ben Gamari at 2022-08-08T19:39:20-04:00
gitlab-ci: Introduce validation job for aarch64 cross-compilation
Begins to address #11958.
- - - - -
e866625c by Ben Gamari at 2022-08-08T19:39:20-04:00
Bump process submodule
- - - - -
ae707762 by Ben Gamari at 2022-08-08T19:39:20-04:00
gitlab-ci: Add basic support for cross-compiler testiing
Here we add a simple qemu-based test for cross-compilers.
- - - - -
50912d68 by Ben Gamari at 2022-08-08T19:39:57-04:00
rts: Ensure that Array# card arrays are initialized
In #19143 I noticed that newArray# failed to initialize the card table
of newly-allocated arrays. However, embarrassingly, I then only fixed
the issue in newArrayArray# and, in so doing, introduced the potential
for an integer underflow on zero-length arrays (#21962).
Here I fix the issue in newArray#, this time ensuring that we do not
underflow in pathological cases.
Fixes #19143.
- - - - -
e5ceff56 by Ben Gamari at 2022-08-08T19:39:57-04:00
testsuite: Add test for #21962
- - - - -
c1c08bd8 by Ben Gamari at 2022-08-09T02:31:14-04:00
gitlab-ci: Don't use coreutils on Darwin
In general we want to ensure that the tested environment is as similar
as possible to the environment the user will use. In the case of Darwin,
this means we want to use the system's BSD command-line utilities, not
coreutils.
This would have caught #21974.
- - - - -
1c582f44 by Ben Gamari at 2022-08-09T02:31:14-04:00
hadrian: Fix bindist installation on Darwin
It turns out that `cp -P` on Darwin does not always copy a symlink as
a symlink. In order to get these semantics one must pass `-RP`. It's not
entirely clear whether this is valid under POSIX, but it is nevertheless
what Apple does.
- - - - -
681aa076 by Ben Gamari at 2022-08-09T02:31:49-04:00
hadrian: Fix access mode of installed package registration files
Previously hadrian's bindist Makefile would modify package
registrations placed by `install` via a shell pipeline and `mv`.
However, the use of `mv` means that if umask is set then the user may
otherwise end up with package registrations which are inaccessible.
Fix this by ensuring that the mode is 0644.
- - - - -
e9dfd26a by Krzysztof Gogolewski at 2022-08-09T02:32:24-04:00
Cleanups around pretty-printing
* Remove hack when printing OccNames. No longer needed since e3dcc0d5
* Remove unused `pprCmms` and `instance Outputable Instr`
* Simplify `pprCLabel` (no need to pass platform)
* Remove evil `Show`/`Eq` instances for `SDoc`. They were needed by
ImmLit, but that can take just a String instead.
* Remove instance `Outputable CLabel` - proper output of labels
needs a platform, and is done by the `OutputableP` instance
- - - - -
66d2e927 by Ben Gamari at 2022-08-09T13:46:48-04:00
rts/linker: Resolve iconv_* on FreeBSD
FreeBSD's libiconv includes an implementation of the
iconv_* functions in libc. Unfortunately these can
only be resolved using dlvsym, which is how the RTS linker
usually resolves such functions. To fix this we include an ad-hoc
special case for iconv_*.
Fixes #20354.
- - - - -
5d66a0ce by Ben Gamari at 2022-08-09T13:46:48-04:00
system-cxx-std-lib: Add support for FreeBSD libcxxrt
- - - - -
ea90e61d by Ben Gamari at 2022-08-09T13:46:48-04:00
gitlab-ci: Bump to use freebsd13 runners
- - - - -
d71a2051 by sheaf at 2022-08-09T13:47:28-04:00
Fix size_up_alloc to account for UnliftedDatatypes
The size_up_alloc function mistakenly considered any type that isn't
lifted to not allocate anything, which is wrong. What we want instead
is to check the type isn't boxed. This accounts for (BoxedRep Unlifted).
Fixes #21939
- - - - -
76b52cf0 by Douglas Wilson at 2022-08-10T06:01:53-04:00
testsuite: 21651 add test for closeFdWith + setNumCapabilities
This bug does not affect windows, which does not use the
base module GHC.Event.Thread.
- - - - -
7589ee72 by Douglas Wilson at 2022-08-10T06:01:53-04:00
base: Fix races in IOManager (setNumCapabilities,closeFdWith)
Fix for #21651
Fixes three bugs:
- writes to eventManager should be atomic. It is accessed concurrently by ioManagerCapabilitiesChanged and closeFdWith.
- The race in closeFdWith described in the ticket.
- A race in getSystemEventManager where it accesses the 'IOArray' in
'eventManager' before 'ioManagerCapabilitiesChanged' has written to
'eventManager', causing an Array Index exception. The fix here is to
'yield' and retry.
- - - - -
dc76439d by Trevis Elser at 2022-08-10T06:02:28-04:00
Updates language extension documentation
Adding a 'Status' field with a few values:
- Deprecated
- Experimental
- InternalUseOnly
- Noting if included in 'GHC2021', 'Haskell2010' or 'Haskell98'
Those values are pulled from the existing descriptions or elsewhere in
the documentation.
While at it, include the :implied by: where appropriate, to provide
more detail.
Fixes #21475
- - - - -
823fe5b5 by Jens Petersen at 2022-08-10T06:03:07-04:00
hadrian RunRest: add type signature for stageNumber
avoids warning seen on 9.4.1:
src/Settings/Builders/RunTest.hs:264:53: warning: [-Wtype-defaults]
• Defaulting the following constraints to type ‘Integer’
(Show a0)
arising from a use of ‘show’
at src/Settings/Builders/RunTest.hs:264:53-84
(Num a0)
arising from a use of ‘stageNumber’
at src/Settings/Builders/RunTest.hs:264:59-83
• In the second argument of ‘(++)’, namely
‘show (stageNumber (C.stage ctx))’
In the second argument of ‘($)’, namely
‘"config.stage=" ++ show (stageNumber (C.stage ctx))’
In the expression:
arg $ "config.stage=" ++ show (stageNumber (C.stage ctx))
|
264 | , arg "-e", arg $ "config.stage=" ++ show (stageNumber (C.stage ctx))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
compilation tested locally
- - - - -
f95bbdca by Sylvain Henry at 2022-08-10T09:44:46-04:00
Add support for external static plugins (#20964)
This patch adds a new command-line flag:
-fplugin-library=<file-path>;<unit-id>;<module>;<args>
used like this:
-fplugin-library=path/to/plugin.so;package-123;Plugin.Module;["Argument","List"]
It allows a plugin to be loaded directly from a shared library. With
this approach, GHC doesn't compile anything for the plugin and doesn't
load any .hi file for the plugin and its dependencies. As such GHC
doesn't need to support two environments (one for plugins, one for
target code), which was the more ambitious approach tracked in #14335.
Fix #20964
Co-authored-by: Josh Meredith <joshmeredith2008(a)gmail.com>
- - - - -
5bc489ca by Ben Gamari at 2022-08-10T09:45:22-04:00
gitlab-ci: Fix ARMv7 build
It appears that the CI refactoring carried out in
5ff690b8474c74e9c968ef31e568c1ad0fe719a1 failed to carry over some
critical configuration: setting the build/host/target platforms and
forcing use of a non-broken linker.
- - - - -
596db9a5 by Ben Gamari at 2022-08-10T09:45:22-04:00
gitlab-ci: Run ARMv7 jobs when ~ARM label is used
- - - - -
7cabea7c by Ben Gamari at 2022-08-10T15:37:58-04:00
hadrian: Don't attempt to install documentation if doc/ doesn't exist
Previously we would attempt to install documentation even if the `doc`
directory doesn't exist (e.g. due to `--docs=none`). This would result
in the surprising side-effect of the entire contents of the bindist
being installed in the destination documentation directory. Fix this.
Fixes #21976.
- - - - -
67575f20 by normalcoder at 2022-08-10T15:38:34-04:00
ncg/aarch64: Don't use x18 register on AArch64/Darwin
Apple's ABI documentation [1] says: "The platforms reserve register x18.
Don’t use this register." While this wasn't problematic in previous
Darwin releases, macOS 13 appears to start zeroing this register
periodically. See #21964.
[1] https://developer.apple.com/documentation/xcode/writing-arm64-code-for-appl…
- - - - -
45eb4cbe by Andreas Klebinger at 2022-08-10T22:41:12-04:00
Note [Trimming auto-rules]: State that this improves compiler perf.
- - - - -
5c24b1b3 by Andrew Lelechenko at 2022-08-10T22:41:50-04:00
Document that threadDelay / timeout are susceptible to overflows on 32-bit machines
- - - - -
ff67c79e by Alan Zimmerman at 2022-08-11T16:19:57-04:00
EPA: DotFieldOcc does not have exact print annotations
For the code
{-# LANGUAGE OverloadedRecordUpdate #-}
operatorUpdate f = f{(+) = 1}
There are no exact print annotations for the parens around the +
symbol, nor does normal ppr print them.
This MR fixes that.
Closes #21805
Updates haddock submodule
- - - - -
dca43a04 by Matthew Pickering at 2022-08-11T16:20:33-04:00
Revert "gitlab-ci: Add release job for aarch64/debian 11"
This reverts commit 5765e13370634979eb6a0d9f67aa9afa797bee46.
The job was not tested before being merged and fails CI
(https://gitlab.haskell.org/ghc/ghc/-/jobs/1139392)
Ticket #22005
- - - - -
ffc9116e by Eric Lindblad at 2022-08-16T09:01:26-04:00
typo
- - - - -
cd6f5bfd by Ben Gamari at 2022-08-16T09:02:02-04:00
CmmToLlvm: Don't aliasify builtin LLVM variables
Our aliasification logic would previously turn builtin LLVM variables
into aliases, which apparently confuses LLVM. This manifested in
initializers failing to be emitted, resulting in many profiling failures
with the LLVM backend.
Fixes #22019.
- - - - -
dc7da356 by Bryan Richter at 2022-08-16T09:02:38-04:00
run_ci: remove monoidal-containers
Fixes #21492
MonoidalMap is inlined and used to implement Variables, as before.
The top-level value "jobs" is reimplemented as a regular Map, since it
doesn't use the monoidal union anyway.
- - - - -
64110544 by Cheng Shao at 2022-08-16T09:03:15-04:00
CmmToAsm/AArch64: correct a typo
- - - - -
f6a5524a by Andreas Klebinger at 2022-08-16T14:34:11-04:00
Fix #21979 - compact-share failing with -O
I don't have good reason to believe the optimization level should affect
if sharing works or not here. So limit the test to the normal way.
- - - - -
68154a9d by Ben Gamari at 2022-08-16T14:34:47-04:00
users-guide: Fix reference to dead llvm-version substitution
Fixes #22052.
- - - - -
28c60d26 by Ben Gamari at 2022-08-16T14:34:47-04:00
users-guide: Fix incorrect reference to `:extension: role
- - - - -
71102c8f by Ben Gamari at 2022-08-16T14:34:47-04:00
users-guide: Add :ghc-flag: reference
- - - - -
385f420b by Ben Gamari at 2022-08-16T14:34:47-04:00
hadrian: Place manpage in docroot
This relocates it from docs/ to doc/
- - - - -
84598f2e by Ben Gamari at 2022-08-16T14:34:47-04:00
Bump haddock submodule
Includes merge of `main` into `ghc-head` as well as some Haddock users
guide fixes.
- - - - -
59ce787c by Ben Gamari at 2022-08-16T14:34:47-04:00
base: Add changelog entries from ghc-9.2
Closes #21922.
- - - - -
a14e6ae3 by Ben Gamari at 2022-08-16T14:34:47-04:00
relnotes: Add "included libraries" section
As noted in #21988, some users rely on this.
- - - - -
a4212edc by Ben Gamari at 2022-08-16T14:34:47-04:00
users-guide: Rephrase the rewrite rule documentation
Previously the wording was a tad unclear. Fix this.
Closes #21114.
- - - - -
3e493dfd by Peter Becich at 2022-08-17T08:43:21+01:00
Implement Response File support for HPC
This is an improvement to HPC authored by Richard Wallace
(https://github.com/purefn) and myself. I have received permission from
him to attempt to upstream it. This improvement was originally
implemented as a patch to HPC via input-output-hk/haskell.nix:
https://github.com/input-output-hk/haskell.nix/pull/1464
Paraphrasing Richard, HPC currently requires all inputs as command line arguments.
With large projects this can result in an argument list too long error.
I have only seen this error in Nix, but I assume it can occur is a plain Unix environment.
This MR adds the standard response file syntax support to HPC. For
example you can now pass a file to the command line which contains the
arguments.
```
hpc @response_file_1 @response_file_2 ...
The contents of a Response File must have this format:
COMMAND ...
example:
report my_library.tix --include=ModuleA --include=ModuleB
```
Updates hpc submodule
Co-authored-by: Richard Wallace <rwallace(a)thewallacepack.net>
Fixes #22050
- - - - -
436867d6 by Matthew Pickering at 2022-08-18T09:24:08-04:00
ghc-heap: Fix decoding of TSO closures
An extra field was added to the TSO structure in 6d1700b6 but the
decoding logic in ghc-heap was not updated for this new field.
Fixes #22046
- - - - -
a740a4c5 by Matthew Pickering at 2022-08-18T09:24:44-04:00
driver: Honour -x option
The -x option is used to manually specify which phase a file should be
started to be compiled from (even if it lacks the correct extension). I
just failed to implement this when refactoring the driver.
In particular Cabal calls GHC with `-E -cpp -x hs Foo.cpphs` to
preprocess source files using GHC.
I added a test to exercise this case.
Fixes #22044
- - - - -
e293029d by Simon Peyton Jones at 2022-08-18T09:25:19-04:00
Be more careful in chooseInferredQuantifiers
This fixes #22065. We were failing to retain a quantifier that
was mentioned in the kind of another retained quantifier.
Easy to fix.
- - - - -
714c936f by Bryan Richter at 2022-08-18T18:37:21-04:00
testsuite: Add test for #21583
- - - - -
989b844d by Ben Gamari at 2022-08-18T18:37:57-04:00
compiler: Drop --build-id=none hack
Since 2011 the object-joining implementation has had a hack to pass
`--build-id=none` to `ld` when supported, seemingly to work around a
linker bug. This hack is now unnecessary and may break downstream users
who expect objects to have valid build-ids. Remove it.
Closes #22060.
- - - - -
519c712e by Matthew Pickering at 2022-08-19T00:09:11-04:00
Make ru_fn field strict to avoid retaining Ids
It's better to perform this projection from Id to Name strictly so we
don't retain an old Id (hence IdInfo, hence Unfolding, hence everything
etc)
- - - - -
7dda04b0 by Matthew Pickering at 2022-08-19T00:09:11-04:00
Force `getOccFS bndr` to avoid retaining reference to Bndr.
This is another symptom of #19619
- - - - -
4303acba by Matthew Pickering at 2022-08-19T00:09:11-04:00
Force unfoldings when they are cleaned-up in Tidy and CorePrep
If these thunks are not forced then the entire unfolding for the binding
is live throughout the whole of CodeGen despite the fact it should have
been discarded.
Fixes #22071
- - - - -
2361b3bc by Matthew Pickering at 2022-08-19T00:09:47-04:00
haddock docs: Fix links from identifiers to dependent packages
When implementing the base_url changes I made the pretty bad mistake of
zipping together two lists which were in different orders. The simpler
thing to do is just modify `haddockDependencies` to also return the
package identifier so that everything stays in sync.
Fixes #22001
- - - - -
9a7e2ea1 by Matthew Pickering at 2022-08-19T00:10:23-04:00
Revert "Refactor SpecConstr to use treat bindings uniformly"
This reverts commit 415468fef8a3e9181b7eca86de0e05c0cce31729.
This refactoring introduced quite a severe residency regression (900MB
live from 650MB live when compiling mmark), see #21993 for a reproducer
and more discussion.
Ticket #21993
- - - - -
9789e845 by Zachary Wood at 2022-08-19T14:17:28-04:00
tc: warn about lazy annotations on unlifted arguments (fixes #21951)
- - - - -
e5567289 by Andreas Klebinger at 2022-08-19T14:18:03-04:00
Fix #22048 where we failed to drop rules for -fomit-interface-pragmas.
Now we also filter the local rules (again) which fixes the issue.
- - - - -
51ffd009 by Swann Moreau at 2022-08-19T18:29:21-04:00
Print constraints in quotes (#21167)
This patch improves the uniformity of error message formatting by
printing constraints in quotes, as we do for types.
Fix #21167
- - - - -
ab3e0f5a by Sasha Bogicevic at 2022-08-19T18:29:57-04:00
19217 Implicitly quantify type variables in :kind command
- - - - -
9939e95f by MorrowM at 2022-08-21T16:51:38-04:00
Recognize file-header pragmas in GHCi (#21507)
- - - - -
fb7c2d99 by Matthew Pickering at 2022-08-21T16:52:13-04:00
hadrian: Fix bootstrapping with ghc-9.4
The error was that we were trying to link together
containers from boot package library (which depends template-haskell in boot package library)
template-haskell from in-tree package database
So the fix is to build containers in stage0 (and link against template-haskell built in stage0).
Fixes #21981
- - - - -
b946232c by Mario Blažević at 2022-08-22T22:06:21-04:00
Added pprType with precedence argument, as a prerequisite to fix issues #21723 and #21942.
* refines the precedence levels, adding `qualPrec` and `funPrec` to better control parenthesization
* `pprParendType`, `pprFunArgType`, and `instance Ppr Type` all just call `pprType` with proper precedence
* `ParensT` constructor is now always printed parenthesized
* adds the precedence argument to `pprTyApp` as well, as it needs to keep track and pass it down
* using `>=` instead of former `>` to match the Core type printing logic
* some test outputs have changed, losing extraneous parentheses
- - - - -
fe4ff0f7 by Mario Blažević at 2022-08-22T22:06:21-04:00
Fix and test for issue #21723
- - - - -
33968354 by Mario Blažević at 2022-08-22T22:06:21-04:00
Test for issue #21942
- - - - -
c9655251 by Mario Blažević at 2022-08-22T22:06:21-04:00
Updated the changelog
- - - - -
80102356 by Ben Gamari at 2022-08-22T22:06:57-04:00
hadrian: Don't duplicate binaries on installation
Previously we used `install` on symbolic links, which ended up
copying the target file rather than installing a symbolic link.
Fixes #22062.
- - - - -
b929063e by Matthew Farkas-Dyck at 2022-08-24T02:37:01-04:00
Unbreak Haddock comments in `GHC.Core.Opt.WorkWrap.Utils`.
Closes #22092.
- - - - -
112e4f9c by Cheng Shao at 2022-08-24T02:37:38-04:00
driver: don't actually merge objects when ar -L works
- - - - -
a9f0e68e by Ben Gamari at 2022-08-24T02:38:13-04:00
rts: Consistently use MiB in stats output
Previously we would say `MB` even where we
meant `MiB`.
- - - - -
a90298cc by Simon Peyton Jones at 2022-08-25T08:38:16+01:00
Fix arityType: -fpedantic-bottoms, join points, etc
This MR fixes #21694, #21755. It also makes sure that #21948 and
fix to #21694.
* For #21694 the underlying problem was that we were calling arityType
on an expression that had free join points. This is a Bad Bad Idea.
See Note [No free join points in arityType].
* To make "no free join points in arityType" work out I had to avoid
trying to use eta-expansion for runRW#. This entailed a few changes
in the Simplifier's treatment of runRW#. See
GHC.Core.Opt.Simplify.Iteration Note [No eta-expansion in runRW#]
* I also made andArityType work correctly with -fpedantic-bottoms;
see Note [Combining case branches: andWithTail].
* Rewrote Note [Combining case branches: optimistic one-shot-ness]
* arityType previously treated join points differently to other
let-bindings. This patch makes them unform; arityType analyses
the RHS of all bindings to get its ArityType, and extends am_sigs.
I realised that, now we have am_sigs giving the ArityType for
let-bound Ids, we don't need the (pre-dating) special code in
arityType for join points. But instead we need to extend the env for
Rec bindings, which weren't doing before. More uniform now. See
Note [arityType for let-bindings].
This meant we could get rid of ae_joins, and in fact get rid of
EtaExpandArity altogether. Simpler.
* And finally, it was the strange treatment of join-point Ids in
arityType (involving a fake ABot type) that led to a serious bug:
#21755. Fixed by this refactoring, which treats them uniformly;
but without breaking #18328.
In fact, the arity for recursive join bindings is pretty tricky;
see the long Note [Arity for recursive join bindings]
in GHC.Core.Opt.Simplify.Utils. That led to more refactoring,
including deciding that an Id could have an Arity that is bigger
than its JoinArity; see Note [Invariants on join points], item
2(b) in GHC.Core
* Make sure that the "demand threshold" for join points in DmdAnal
is no bigger than the join-arity. In GHC.Core.Opt.DmdAnal see
Note [Demand signatures are computed for a threshold arity based on idArity]
* I moved GHC.Core.Utils.exprIsDeadEnd into GHC.Core.Opt.Arity,
where it more properly belongs.
* Remove an old, redundant hack in FloatOut. The old Note was
Note [Bottoming floats: eta expansion] in GHC.Core.Opt.SetLevels.
Compile time improves very slightly on average:
Metrics: compile_time/bytes allocated
---------------------------------------------------------------------------------------
T18223(normal) ghc/alloc 725,808,720 747,839,216 +3.0% BAD
T6048(optasm) ghc/alloc 105,006,104 101,599,472 -3.2% GOOD
geo. mean -0.2%
minimum -3.2%
maximum +3.0%
For some reason Windows was better
T10421(normal) ghc/alloc 125,888,360 124,129,168 -1.4% GOOD
T18140(normal) ghc/alloc 85,974,520 83,884,224 -2.4% GOOD
T18698b(normal) ghc/alloc 236,764,568 234,077,288 -1.1% GOOD
T18923(normal) ghc/alloc 75,660,528 73,994,512 -2.2% GOOD
T6048(optasm) ghc/alloc 112,232,512 108,182,520 -3.6% GOOD
geo. mean -0.6%
I had a quick look at T18223 but it is knee deep in coercions and
the size of everything looks similar before and after. I decided
to accept that 3% increase in exchange for goodness elsewhere.
Metric Decrease:
T10421
T18140
T18698b
T18923
T6048
Metric Increase:
T18223
- - - - -
909edcfc by Ben Gamari at 2022-08-25T10:03:34-04:00
upload_ghc_libs: Add means of passing Hackage credentials
- - - - -
28402eed by M Farkas-Dyck at 2022-08-25T10:04:17-04:00
Scrub some partiality in `CommonBlockElim`.
- - - - -
54affbfa by Ben Gamari at 2022-08-25T20:05:31-04:00
hadrian: Fix whitespace
Previously this region of Settings.Packages was incorrectly indented.
- - - - -
c4bba0f0 by Ben Gamari at 2022-08-25T20:05:31-04:00
validate: Drop --legacy flag
In preparation for removal of the legacy `make`-based build system.
- - - - -
822b0302 by Ben Gamari at 2022-08-25T20:05:31-04:00
gitlab-ci: Drop make build validation jobs
In preparation for removal of the `make`-based build system
- - - - -
6fd9b0a1 by Ben Gamari at 2022-08-25T20:05:31-04:00
Drop make build system
Here we at long last remove the `make`-based build system, it having
been replaced with the Shake-based Hadrian build system. Users are
encouraged to refer to the documentation in `hadrian/doc` and this [1]
blog post for details on using Hadrian.
Closes #17527.
[1] https://www.haskell.org/ghc/blog/20220805-make-to-hadrian.html
- - - - -
dbb004b0 by Ben Gamari at 2022-08-25T20:05:31-04:00
Remove testsuite/tests/perf/haddock/.gitignore
As noted in #16802, this is no longer needed.
Closes #16802.
- - - - -
fe9d824d by Ben Gamari at 2022-08-25T20:05:31-04:00
Drop hc-build script
This has not worked for many, many years and relied on the now-removed
`make`-based build system.
- - - - -
659502bc by Ben Gamari at 2022-08-25T20:05:31-04:00
Drop mkdirhier
This is only used by nofib's dead `dist` target
- - - - -
4a426924 by Ben Gamari at 2022-08-25T20:05:31-04:00
Drop mk/{build,install,config}.mk.in
- - - - -
46924b75 by Ben Gamari at 2022-08-25T20:05:31-04:00
compiler: Drop comment references to make
- - - - -
d387f687 by Harry Garrood at 2022-08-25T20:06:10-04:00
Add inits1 and tails1 to Data.List.NonEmpty
See https://github.com/haskell/core-libraries-committee/issues/67
- - - - -
8603c921 by Harry Garrood at 2022-08-25T20:06:10-04:00
Add since annotations and changelog entries
- - - - -
6b47aa1c by Krzysztof Gogolewski at 2022-08-25T20:06:46-04:00
Fix redundant import
This fixes a build error on x86_64-linux-alpine3_12-validate.
See the function 'loadExternalPlugins' defined in this file.
- - - - -
4786acf7 by sheaf at 2022-08-26T15:05:23-04:00
Pmc: consider any 2 dicts of the same type equal
This patch massages the keys used in the `TmOracle` `CoreMap` to ensure
that dictionaries of coherent classes give the same key.
That is, whenever we have an expression we want to insert or lookup in
the `TmOracle` `CoreMap`, we first replace any dictionary
`$dict_abcd :: ct` with a value of the form `error @ct`.
This allows us to common-up view pattern functions with required
constraints whose arguments differed only in the uniques of the
dictionaries they were provided, thus fixing #21662.
This is a rather ad-hoc change to the keys used in the
`TmOracle` `CoreMap`. In the long run, we would probably want to use
a different representation for the keys instead of simply using
`CoreExpr` as-is. This more ambitious plan is outlined in #19272.
Fixes #21662
Updates unix submodule
- - - - -
f5e0f086 by Krzysztof Gogolewski at 2022-08-26T15:06:01-04:00
Remove label style from printing context
Previously, the SDocContext used for code generation contained
information whether the labels should use Asm or C style.
However, at every individual call site, this is known statically.
This removes the parameter to 'PprCode' and replaces every 'pdoc'
used to print a label in code style with 'pprCLabel' or 'pprAsmLabel'.
The OutputableP instance is now used only for dumps.
The output of T15155 changes, it now uses the Asm style
(which is faithful to what actually happens).
- - - - -
1007829b by Cheng Shao at 2022-08-26T15:06:40-04:00
boot: cleanup legacy args
Cleanup legacy boot script args, following removal of the legacy make
build system.
- - - - -
95fe09da by Simon Peyton Jones at 2022-08-27T00:29:02-04:00
Improve SpecConstr for evals
As #21763 showed, we were over-specialising in some cases, when
the function involved was doing a simple 'eval', but not taking
the value apart, or branching on it.
This MR fixes the problem. See Note [Do not specialise evals].
Nofib barely budges, except that spectral/cichelli allocates about
3% less.
Compiler bytes-allocated improves a bit
geo. mean -0.1%
minimum -0.5%
maximum +0.0%
The -0.5% is on T11303b, for what it's worth.
- - - - -
565a8ec8 by Matthew Pickering at 2022-08-27T00:29:39-04:00
Revert "Revert "Refactor SpecConstr to use treat bindings uniformly""
This reverts commit 851d8dd89a7955864b66a3da8b25f1dd88a503f8.
This commit was originally reverted due to an increase in space usage.
This was diagnosed as because the SCE increased in size and that was
being retained by another leak. See #22102
- - - - -
82ce1654 by Matthew Pickering at 2022-08-27T00:29:39-04:00
Avoid retaining bindings via ModGuts held on the stack
It's better to overwrite the bindings fields of the ModGuts before
starting an iteration as then all the old bindings can be collected as
soon as the simplifier has processed them. Otherwise we end up with the
old bindings being alive until right at the end of the simplifier pass
as the mg_binds field is only modified right at the end.
- - - - -
64779dcd by Matthew Pickering at 2022-08-27T00:29:39-04:00
Force imposs_deflt_cons in filterAlts
This fixes a pretty serious space leak as the forced thunk would retain
`Alt b` values which would then contain reference to a lot of old
bindings and other simplifier gunk.
The OtherCon unfolding was not forced on subsequent simplifier runs so
more and more old stuff would be retained until the end of
simplification.
Fixing this has a drastic effect on maximum residency for the mmark
package which goes from
```
45,005,401,056 bytes allocated in the heap
17,227,721,856 bytes copied during GC
818,281,720 bytes maximum residency (33 sample(s))
9,659,144 bytes maximum slop
2245 MiB total memory in use (0 MB lost due to fragmentation)
```
to
```
45,039,453,304 bytes allocated in the heap
13,128,181,400 bytes copied during GC
331,546,608 bytes maximum residency (40 sample(s))
7,471,120 bytes maximum slop
916 MiB total memory in use (0 MB lost due to fragmentation)
```
See #21993 for some more discussion.
- - - - -
a3b23a33 by Matthew Pickering at 2022-08-27T00:29:39-04:00
Use Solo to avoid retaining the SCE but to avoid performing the substitution
The use of Solo here allows us to force the selection into the SCE to obtain
the Subst but without forcing the substitution to be applied. The resulting thunk
is placed into a lazy field which is rarely forced, so forcing it regresses
peformance.
- - - - -
161a6f1f by Simon Peyton Jones at 2022-08-27T00:30:14-04:00
Fix a nasty loop in Tidy
As the remarkably-simple #22112 showed, we were making a black hole
in the unfolding of a self-recursive binding. Boo!
It's a bit tricky. Documented in GHC.Iface.Tidy,
Note [tidyTopUnfolding: avoiding black holes]
- - - - -
68e6786f by Giles Anderson at 2022-08-29T00:01:35+02:00
Use TcRnDiagnostic in GHC.Tc.TyCl.Class (#20117)
The following `TcRnDiagnostic` messages have been introduced:
TcRnIllegalHsigDefaultMethods
TcRnBadGenericMethod
TcRnWarningMinimalDefIncomplete
TcRnDefaultMethodForPragmaLacksBinding
TcRnIgnoreSpecialisePragmaOnDefMethod
TcRnBadMethodErr
TcRnNoExplicitAssocTypeOrDefaultDeclaration
- - - - -
cbe51ac5 by Simon Peyton Jones at 2022-08-29T04:18:57-04:00
Fix a bug in anyInRnEnvR
This bug was a subtle error in anyInRnEnvR, introduced by
commit d4d3fe6e02c0eb2117dbbc9df72ae394edf50f06
Author: Andreas Klebinger <klebinger.andreas(a)gmx.at>
Date: Sat Jul 9 01:19:52 2022 +0200
Rule matching: Don't compute the FVs if we don't look at them.
The net result was #22028, where a rewrite rule would wrongly
match on a lambda.
The fix to that function is easy.
- - - - -
0154bc80 by sheaf at 2022-08-30T06:05:41-04:00
Various Hadrian bootstrapping fixes
- Don't always produce a distribution archive (#21629)
- Use correct executable names for ghc-pkg and hsc2hs on windows
(we were missing the .exe file extension)
- Fix a bug where we weren't using the right archive format on Windows
when unpacking the bootstrap sources.
Fixes #21629
- - - - -
451b1d90 by Matthew Pickering at 2022-08-30T06:06:16-04:00
ci: Attempt using normal submodule cloning strategy
We do not use any recursively cloned submodules, and this protects us
from flaky upstream remotes.
Fixes #22121
- - - - -
9d5ad7c4 by Pi Delport at 2022-08-30T22:40:46+00:00
Fix typo in Any docs: stray "--"
- - - - -
3a002632 by Pi Delport at 2022-08-30T22:40:46+00:00
Fix typo in Any docs: syntatic -> syntactic
- - - - -
7f490b13 by Simon Peyton Jones at 2022-08-31T03:53:54-04:00
Add a missing trimArityType
This buglet was exposed by #22114, a consequence of my earlier
refactoring of arity for join points.
- - - - -
e6fc820f by Ben Gamari at 2022-08-31T13:16:01+01:00
Bump binary submodule to 0.8.9.1
- - - - -
4c1e7b22 by Ben Gamari at 2022-08-31T13:16:01+01:00
Bump stm submodule to 2.5.1.0
- - - - -
837472b4 by Ben Gamari at 2022-08-31T13:16:01+01:00
users-guide: Document system-cxx-std-lib
- - - - -
f7a9947a by Douglas Wilson at 2022-08-31T13:16:01+01:00
Update submodule containers to 0.6.6
- - - - -
4ab1c2ca by Douglas Wilson at 2022-08-31T13:16:02+01:00
Update submodule process to 1.6.15.0
- - - - -
1309ea1e by Ben Gamari at 2022-08-31T13:16:02+01:00
Bump directory submodule to 1.3.7.1
- - - - -
7962a33a by Douglas Wilson at 2022-08-31T13:16:02+01:00
Bump text submodule to 2.0.1
- - - - -
fd8d80c3 by Ben Gamari at 2022-08-31T13:26:52+01:00
Bump deepseq submodule to 1.4.8.0
- - - - -
a9baafac by Ben Gamari at 2022-08-31T13:26:52+01:00
Add dates to base, ghc-prim changelogs
- - - - -
2cee323c by Ben Gamari at 2022-08-31T13:26:52+01:00
Update autoconf scripts
Scripts taken from autoconf 02ba26b218d3d3db6c56e014655faf463cefa983
- - - - -
e62705ff by Ben Gamari at 2022-08-31T13:26:53+01:00
Bump bytestring submodule to 0.11.3.1
- - - - -
f7b4dcbd by Douglas Wilson at 2022-08-31T13:26:53+01:00
Update submodule Cabal to tag Cabal-v3.8.1.0
closes #21931
- - - - -
e8eaf807 by Matthew Pickering at 2022-08-31T18:27:57-04:00
Refine in-tree compiler args for --test-compiler=stage1
Some of the logic to calculate in-tree arguments was not correct for the
stage1 compiler. Namely we were not correctly reporting whether we were
building static or dynamic executables and whether debug assertions were
enabled.
Fixes #22096
- - - - -
6b2f7ffe by Matthew Pickering at 2022-08-31T18:27:57-04:00
Make ghcDebugAssertions into a Stage predicate (Stage -> Bool)
We also care whether we have debug assertions enabled for a stage one
compiler, but the way which we turned on the assertions was quite
different from the stage2 compiler. This makes the logic for turning on
consistent across both and has the advantage of being able to correct
determine in in-tree args whether a flavour enables assertions or not.
Ticket #22096
- - - - -
15111af6 by Zubin Duggal at 2022-09-01T01:18:50-04:00
Add regression test for #21550
This was fixed by ca90ffa321a31842a32be1b5b6e26743cd677ec5
"Use local instances with least superclass depth"
- - - - -
7d3a055d by Krzysztof Gogolewski at 2022-09-01T01:19:26-04:00
Minor cleanup
- Remove mkHeteroCoercionType, sdocImpredicativeTypes, isStateType (unused),
isCoVar_maybe (duplicated by getCoVar_maybe)
- Replace a few occurrences of voidPrimId with (# #).
void# is a deprecated synonym for the unboxed tuple.
- Use showSDoc in :show linker.
This makes it consistent with the other :show commands
- - - - -
31a8989a by Tommy Bidne at 2022-09-01T12:01:20-04:00
Change Ord defaults per CLC proposal
Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/24#issuecomment-…
- - - - -
7f527f01 by Matthew Pickering at 2022-09-01T12:01:56-04:00
Fix bootstrap with ghc-9.0
It turns out Solo is a very recent addition to base, so for older GHC
versions we just defined it inline here the one place we use it in the
compiler.
- - - - -
d2be80fd by Sebastian Graf at 2022-09-05T23:12:14-04:00
DmdAnal: Don't panic in addCaseBndrDmd (#22039)
Rather conservatively return Top.
See Note [Untyped demand on case-alternative binders].
I also factored `addCaseBndrDmd` into two separate functions `scrutSubDmd` and
`fieldBndrDmds`.
Fixes #22039.
- - - - -
25f68ace by Ben Gamari at 2022-09-05T23:12:50-04:00
gitlab-ci: Ensure that ghc derivation is in scope
Previously the lint-ci job attempted to use cabal-install (specifically
`cabal update`) without a GHC in PATH. However, cabal-install-3.8
appears to want GHC, even for `cabal update`.
- - - - -
f37b621f by sheaf at 2022-09-06T11:51:53+00:00
Update instances.rst, clarifying InstanceSigs
Fixes #22103
- - - - -
d4f908f7 by Jan Hrček at 2022-09-06T15:36:58-04:00
Fix :add docs in user guide
- - - - -
808bb793 by Cheng Shao at 2022-09-06T15:37:35-04:00
ci: remove unused build_make/test_make in ci script
- - - - -
d0a2efb2 by Eric Lindblad at 2022-09-07T16:42:45-04:00
typo
- - - - -
fac0098b by Eric Lindblad at 2022-09-07T16:42:45-04:00
typos
- - - - -
a581186f by Eric Lindblad at 2022-09-07T16:42:45-04:00
whitespace
- - - - -
04a738cb by Cheng Shao at 2022-09-07T16:43:22-04:00
CmmToAsm: remove unused ModLocation from NatM_State
- - - - -
ee1cfaa9 by Krzysztof Gogolewski at 2022-09-07T16:43:58-04:00
Minor SDoc cleanup
Change calls to renderWithContext with showSDocOneLine; it's more
efficient and explanatory.
Remove polyPatSig (unused)
- - - - -
7918265d by Krzysztof Gogolewski at 2022-09-07T16:43:58-04:00
Remove Outputable Char instance
Use 'text' instead of 'ppr'.
Using 'ppr' on the list "hello" rendered as "h,e,l,l,o".
- - - - -
77209ab3 by Georgi Lyubenov at 2022-09-08T17:14:36+03:00
Export liftA2 from Prelude
Changes:
In order to be warning free and compatible, we hide Applicative(..)
from Prelude in a few places and instead import it directly from
Control.Applicative.
Please see the migration guide at
https://github.com/haskell/core-libraries-committee/blob/main/guides/export…
for more details.
This means that Applicative is now exported in its entirety from
Prelude.
Motivation:
This change is motivated by a few things:
* liftA2 is an often used function, even more so than (<*>) for some
people.
* When implementing Applicative, the compiler will prompt you for either
an implementation of (<*>) or of liftA2, but trying to use the latter
ends with an error, without further imports. This could be confusing
for newbies.
* For teaching, it is often times easier to introduce liftA2 first,
as it is a natural generalisation of fmap.
* This change seems to have been unanimously and enthusiastically
accepted by the CLC members, possibly indicating a lot of love for it.
* This change causes very limited breakage, see the linked issue below
for an investigation on this.
See https://github.com/haskell/core-libraries-committee/issues/50
for the surrounding discussion and more details.
- - - - -
442a94e8 by Georgi Lyubenov at 2022-09-08T17:14:36+03:00
Add changelog entry for liftA2 export from Prelude
- - - - -
fb968680 by Georgi Lyubenov at 2022-09-08T17:14:36+03:00
Bump submodule containers to one with liftA2 warnings fixed
- - - - -
f54ff818 by Georgi Lyubenov at 2022-09-08T17:14:36+03:00
Bump submodule Cabal to one with liftA2 warnings fixed
- - - - -
a4b34808 by Georgi Lyubenov at 2022-09-08T17:14:36+03:00
Isolate some Applicative hidings to GHC.Prelude
By reexporting the entirety of Applicative from GHC.Prelude, we can save
ourselves some `hiding` and importing of `Applicative` in consumers of GHC.Prelude.
This also has the benefit of isolating this type of change to
GHC.Prelude, so that people in the future don't have to think about it.
- - - - -
9c4ea90c by Cheng Shao at 2022-09-08T17:49:47-04:00
CmmToC: enable 64-bit CallishMachOp on 32-bit targets
Normally, the unregisterised builds avoid generating 64-bit
CallishMachOp in StgToCmm, so CmmToC doesn't support these. However,
there do exist cases where we'd like to invoke cmmToC for other cmm
inputs which may contain such CallishMachOps, and it's a rather low
effort to add support for these since they only require calling into
existing ghc-prim cbits.
- - - - -
04062510 by Alexis King at 2022-09-11T11:30:32+02:00
Add native delimited continuations to the RTS
This patch implements GHC proposal 313, "Delimited continuation
primops", by adding native support for delimited continuations to the
GHC RTS.
All things considered, the patch is relatively small. It almost
exclusively consists of changes to the RTS; the compiler itself is
essentially unaffected. The primops come with fairly extensive Haddock
documentation, and an overview of the implementation strategy is given
in the Notes in rts/Continuation.c.
This first stab at the implementation prioritizes simplicity over
performance. Most notably, every continuation is always stored as a
single, contiguous chunk of stack. If one of these chunks is
particularly large, it can result in poor performance, as the current
implementation does not attempt to cleverly squeeze a subset of the
stack frames into the existing stack: it must fit all at once. If this
proves to be a performance issue in practice, a cleverer strategy would
be a worthwhile target for future improvements.
- - - - -
ee471dfb by Cheng Shao at 2022-09-12T07:07:33-04:00
rts: fix missing dirty_MVAR argument in stg_writeIOPortzh
- - - - -
a5f9c35f by Cheng Shao at 2022-09-12T13:29:05-04:00
ci: enable parallel compression for xz
- - - - -
3a815f30 by Ryan Scott at 2022-09-12T13:29:41-04:00
Windows: Always define _UCRT when compiling C code
As seen in #22159, this is required to ensure correct behavior when MinGW-w64
headers are in the `C_INCLUDE_PATH`.
Fixes #22159.
- - - - -
65a0bd69 by sheaf at 2022-09-13T10:27:52-04:00
Add diagnostic codes
This MR adds diagnostic codes, assigning unique numeric codes to
error and warnings, e.g.
error: [GHC-53633]
Pattern match is redundant
This is achieved as follows:
- a type family GhcDiagnosticCode that gives the diagnostic code
for each diagnostic constructor,
- a type family ConRecursInto that specifies whether to recur into
an argument of the constructor to obtain a more fine-grained code
(e.g. different error codes for different 'deriving' errors),
- generics machinery to generate the value-level function assigning
each diagnostic its error code; see Note [Diagnostic codes using generics]
in GHC.Types.Error.Codes.
The upshot is that, to add a new diagnostic code, contributors only need
to modify the two type families mentioned above. All logic relating to
diagnostic codes is thus contained to the GHC.Types.Error.Codes module,
with no code duplication.
This MR also refactors error message datatypes a bit, ensuring we can
derive Generic for them, and cleans up the logic around constraint
solver reports by splitting up 'TcSolverReportInfo' into separate
datatypes (see #20772).
Fixes #21684
- - - - -
362cca13 by sheaf at 2022-09-13T10:27:53-04:00
Diagnostic codes: acccept test changes
The testsuite output now contains diagnostic codes, so many tests need
to be updated at once.
We decided it was best to keep the diagnostic codes in the testsuite
output, so that contributors don't inadvertently make changes to the
diagnostic codes.
- - - - -
08f6730c by Adam Gundry at 2022-09-13T10:28:29-04:00
Allow imports to reference multiple fields with the same name (#21625)
If a module `M` exports two fields `f` (using DuplicateRecordFields), we can
still accept
import M (f)
import M hiding (f)
and treat `f` as referencing both of them. This was accepted in GHC 9.0, but gave
rise to an ambiguity error in GHC 9.2. See #21625.
This patch also documents this behaviour in the user's guide, and updates the
test for #16745 which is now treated differently.
- - - - -
c14370d7 by Cheng Shao at 2022-09-13T10:29:07-04:00
ci: remove unused appveyor config
- - - - -
dc6af9ed by Cheng Shao at 2022-09-13T10:29:45-04:00
compiler: remove unused lazy state monad
- - - - -
646d15ad by Eric Lindblad at 2022-09-14T03:13:56-04:00
Fix typos
This fixes various typos and spelling mistakes
in the compiler.
Fixes #21891
- - - - -
7d7e71b0 by Matthew Pickering at 2022-09-14T03:14:32-04:00
hadrian: Bump index state
This bumps the index state so a build plan can also be found when
booting with 9.4.
Fixes #22165
- - - - -
98b62871 by Matthew Pickering at 2022-09-14T17:17:04-04:00
hadrian: Use a stamp file to record when a package is built in a certain way
Before this patch which library ways we had built wasn't recorded
directly. So you would run into issues if you build the .conf file with
some library ways before switching the library ways which you wanted to
build.
Now there is one stamp file for each way, so in order to build a
specific way you can need that specific stamp file rather than going
indirectly via the .conf file.
- - - - -
b42cedbe by Matthew Pickering at 2022-09-14T17:17:04-04:00
hadrian: Inplace/Final package databases
There are now two different package databases per stage. An inplace
package database contains .conf files which point directly into the
build directories. The final package database contains .conf files which
point into the installed locations. The inplace .conf files are created
before any building happens and have fake ABI hash values. The final
.conf files are created after a package finished building and contains
the proper ABI has.
The motivation for this is to make the dependency structure more
fine-grained when building modules. Now a module depends just depends
directly on M.o from package p rather than the .conf file depend on the
.conf file for package p. So when all of a modules direct dependencies
have finished building we can start building it rather than waiting for
the whole package to finish.
The secondary motivation is that the multi-repl doesn't need to build
everything before starting the multi-repl session. We can just configure
the inplace package-db and use that in order to start the repl.
- - - - -
6515c32b by Matthew Pickering at 2022-09-14T17:17:04-04:00
hadrian: Add some more packages to multi-cradle
The main improvement here is to pass `-this-unit-id` for executables so
that they can be added to the multi-cradle if desired as well as normal
library packages.
- - - - -
e470e91f by Matthew Pickering at 2022-09-14T17:17:04-04:00
hadrian: Need builders needed by Cabal Configure in parallel
Because of the use of withStaged (which needs the necessary builder)
when configuring a package, the builds of stage1:exe:ghc-bin and
stage1:exe:ghc-pkg where being linearised when building a specific
target like `binary-dist-dir`.
Thankfully the fix is quite local, to supply all the `withStaged`
arguments together so the needs can be batched together and hence
performed in parallel.
Fixes #22093
- - - - -
c4438347 by Matthew Pickering at 2022-09-14T17:17:04-04:00
Remove stage1:exe:ghc-bin pre-build from CI script
CI builds stage1:exe:ghc-bin before the binary-dist target which
introduces some quite bad linearisation (see #22093) because we don't
build stage1 compiler in parallel with anything. Then when the
binary-dist target is started we have to build stage1:exe:ghc-pkg before
doing anything.
Fixes #22094
- - - - -
71d8db86 by Matthew Pickering at 2022-09-14T17:17:04-04:00
hadrian: Add extra implicit dependencies from DeriveLift
ghc -M should know that modules which use DeriveLift (or
TemplateHaskellQuotes) need TH.Lib.Internal but until it does, we have
to add these extra edges manually or the modules will be compiled before
TH.Lib.Internal is compiled which leads to a desugarer error.
- - - - -
43e574f0 by Greg Steuck at 2022-09-14T17:17:43-04:00
Repair c++ probing on OpenBSD
Failure without this change:
```
checking C++ standard library flavour... libc++
checking for linkage against 'c++ c++abi'... failed
checking for linkage against 'c++ cxxrt'... failed
configure: error: Failed to find C++ standard library
```
- - - - -
534b39ee by Douglas Wilson at 2022-09-14T17:18:21-04:00
libraries: template-haskell: vendor filepath differently
Vendoring with ../ in hs-source-dirs prevents upload to hackage.
(cherry picked from commit 1446be7586ba70f9136496f9b67f792955447842)
- - - - -
bdd61cd6 by M Farkas-Dyck at 2022-09-14T22:39:34-04:00
Unbreak Hadrian with Cabal 3.8.
- - - - -
df04d6ec by Krzysztof Gogolewski at 2022-09-14T22:40:09-04:00
Fix typos
- - - - -
d6ea8356 by Andreas Klebinger at 2022-09-15T10:12:41+02:00
Tag inference: Fix #21954 by retaining tagsigs of vars in function position.
For an expression like:
case x of y
Con z -> z
If we also retain the tag sig for z we can generate code to immediately return
it rather than calling out to stg_ap_0_fast.
- - - - -
7cce7007 by Andreas Klebinger at 2022-09-15T10:12:42+02:00
Stg.InferTags.Rewrite - Avoid some thunks.
- - - - -
88c4cbdb by Cheng Shao at 2022-09-16T13:57:56-04:00
hadrian: enable -fprof-late only for profiling ways
- - - - -
d7235831 by Cheng Shao at 2022-09-16T13:57:56-04:00
hadrian: add late_ccs flavour transformer
- - - - -
ce203753 by Cheng Shao at 2022-09-16T13:58:34-04:00
configure: remove unused program checks
- - - - -
9b4c1056 by Pierre Le Marre at 2022-09-16T13:59:16-04:00
Update to Unicode 15.0
- - - - -
c6e9b89a by Andrew Lelechenko at 2022-09-16T13:59:55-04:00
Avoid partial head and tail in ghc-heap; replace with total pattern-matching
- - - - -
616afde3 by Cheng Shao at 2022-09-16T14:00:33-04:00
hadrian: relax Cabal upper bound to allow building with Cabal-3.8
A follow up of !8910.
- - - - -
df35d994 by Alexis King at 2022-09-16T14:01:11-04:00
Add links to the continuations haddocks in the docs for each primop
fixes #22176
- - - - -
383f7549 by Matthew Pickering at 2022-09-16T21:42:10-04:00
-Wunused-pattern-binds: Recurse into patterns to check whether there's a splice
See the examples in #22057 which show we have to traverse deeply into a
pattern to determine whether it contains a splice or not. The original
implementation pointed this out but deemed this very shallow traversal
"too expensive".
Fixes #22057
I also fixed an oversight in !7821 which meant we lost a warning which
was present in 9.2.2.
Fixes #22067
- - - - -
5031bf49 by sheaf at 2022-09-16T21:42:49-04:00
Hadrian: Don't try to build terminfo on Windows
Commit b42cedbe introduced a dependency on terminfo on Windows,
but that package isn't available on Windows.
- - - - -
c9afe221 by M Farkas-Dyck at 2022-09-17T06:44:47-04:00
Clean up some. In particular:
• Delete some dead code, largely under `GHC.Utils`.
• Clean up a few definitions in `GHC.Utils.(Misc, Monad)`.
• Clean up `GHC.Types.SrcLoc`.
• Derive stock `Functor, Foldable, Traversable` for more types.
• Derive more instances for newtypes.
Bump haddock submodule.
- - - - -
85431ac3 by Cheng Shao at 2022-09-17T06:45:25-04:00
driver: pass original Cmm filename in ModLocation
When compiling Cmm, the ml_hs_file field is used to indicate Cmm
filename when later generating DWARF information. We should pass the
original filename here, otherwise for preprocessed Cmm files, the
filename will be a temporary filename which is confusing.
- - - - -
63aa0069 by Cheng Shao at 2022-09-17T06:46:04-04:00
rts: remove legacy logging cabal flag
- - - - -
bd0f4184 by Cheng Shao at 2022-09-17T06:46:04-04:00
rts: make threaded ways optional
For certain targets (e.g. wasm32-wasi), the threaded rts is known not to
work. This patch adds a "threaded" cabal flag to rts to make threaded
rts ways optional. Hadrian enables this flag iff the flavour rtsWays
contains threaded ways.
- - - - -
8a666ad2 by Ryan Scott at 2022-09-18T08:00:44-04:00
DeriveFunctor: Check for last type variables using dataConUnivTyVars
Previously, derived instances of `Functor` (as well as the related classes
`Foldable`, `Traversable`, and `Generic1`) would determine which constraints to
infer by checking for fields that contain the last type variable. The problem
was that this last type variable was taken from `tyConTyVars`. For GADTs, the
type variables in each data constructor are _not_ the same type variables as
in `tyConTyVars`, leading to #22167.
This fixes the issue by instead checking for the last type variable using
`dataConUnivTyVars`. (This is very similar in spirit to the fix for #21185,
which also replaced an errant use of `tyConTyVars` with type variables from
each data constructor.)
Fixes #22167.
- - - - -
78037167 by Vladislav Zavialov at 2022-09-18T08:01:20-04:00
Lexer: pass updated buffer to actions (#22201)
In the lexer, predicates have the following type:
{ ... } :: user -- predicate state
-> AlexInput -- input stream before the token
-> Int -- length of the token
-> AlexInput -- input stream after the token
-> Bool -- True <=> accept the token
This is documented in the Alex manual.
There is access to the input stream both before and after the token.
But when the time comes to construct the token, GHC passes only the
initial string buffer to the lexer action. This patch fixes it:
- type Action = PsSpan -> StringBuffer -> Int -> P (PsLocated Token)
+ type Action = PsSpan -> StringBuffer -> Int -> StringBuffer -> P (PsLocated Token)
Now lexer actions have access to the string buffer both before and after
the token, just like the predicates. It's just a matter of passing an
additional function parameter throughout the lexer.
- - - - -
75746594 by Vladislav Zavialov at 2022-09-18T08:01:20-04:00
Lexer: define varsym without predicates (#22201)
Before this patch, the varsym lexing rules were defined as follows:
<0> {
@varsym / { precededByClosingToken `alexAndPred` followedByOpeningToken } { varsym_tight_infix }
@varsym / { followedByOpeningToken } { varsym_prefix }
@varsym / { precededByClosingToken } { varsym_suffix }
@varsym { varsym_loose_infix }
}
Unfortunately, this meant that the predicates 'precededByClosingToken' and
'followedByOpeningToken' were recomputed several times before we could figure
out the whitespace context.
With this patch, we check for whitespace context directly in the lexer
action:
<0> {
@varsym { with_op_ws varsym }
}
The checking for opening/closing tokens happens in 'with_op_ws' now,
which is part of the lexer action rather than the lexer predicate.
- - - - -
c1f81b38 by Matthew Farkas-Dyck at 2022-09-19T09:07:05-04:00
Scrub partiality about `NewOrData`.
Rather than a list of constructors and a `NewOrData` flag, we define `data DataDefnCons a = NewTypeCon a | DataTypeCons [a]`, which enforces a newtype to have exactly one constructor.
Closes #22070.
Bump haddock submodule.
- - - - -
1e1ed8c5 by Cheng Shao at 2022-09-19T09:07:43-04:00
CmmToC: emit __builtin_unreachable() after noreturn ccalls
Emit a __builtin_unreachable() call after a foreign call marked as
CmmNeverReturns. This is crucial to generate correctly typed code for
wasm; as for other archs, this is also beneficial for the C compiler
optimizations.
- - - - -
19f45a25 by Jan Hrček at 2022-09-20T03:49:29-04:00
Document :unadd GHCi command in user guide
- - - - -
545ff490 by sheaf at 2022-09-20T03:50:06-04:00
Hadrian: merge archives even in stage 0
We now always merge .a archives when ar supports -L.
This change is necessary in order to bootstrap GHC using GHC 9.4
on Windows, as nested archives aren't supported.
Not doing so triggered bug #21990 when trying to use the Win32
package, with errors such as:
Not a x86_64 PE+ file.
Unknown COFF 4 type in getHeaderInfo.
ld.lld: error: undefined symbol: Win32zm2zi12zi0zi0_SystemziWin32ziConsoleziCtrlHandler_withConsoleCtrlHandler1_info
We have to be careful about which ar is meant: in stage 0, the check
should be done on the system ar (system-ar in system.config).
- - - - -
59fe128c by Vladislav Zavialov at 2022-09-20T03:50:42-04:00
Fix -Woperator-whitespace for consym (part of #19372)
Due to an oversight, the initial specification and implementation of
-Woperator-whitespace focused on varsym exclusively and completely
ignored consym.
This meant that expressions such as "x+ y" would produce a warning,
while "x:+ y" would not.
The specification was corrected in ghc-proposals pull request #404,
and this patch updates the implementation accordingly.
Regression test included.
- - - - -
c4c2cca0 by John Ericson at 2022-09-20T13:11:49-04:00
Add `Eq` and `Ord` instances for `Generically1`
These are needed so the subsequent commit overhauling the `*1` classes
type-checks.
- - - - -
7beb356e by John Ericson at 2022-09-20T13:11:50-04:00
Relax instances for Functor combinators; put superclass on Class1 and Class2 to make non-breaking
This change is approved by the Core Libraries commitee in
https://github.com/haskell/core-libraries-committee/issues/10
The first change makes the `Eq`, `Ord`, `Show`, and `Read` instances for
`Sum`, `Product`, and `Compose` match those for `:+:`, `:*:`, and `:.:`.
These have the proper flexible contexts that are exactly what the
instance needs:
For example, instead of
```haskell
instance (Eq1 f, Eq1 g, Eq a) => Eq (Compose f g a) where
(==) = eq1
```
we do
```haskell
deriving instance Eq (f (g a)) => Eq (Compose f g a)
```
But, that change alone is rather breaking, because until now `Eq (f a)`
and `Eq1 f` (and respectively the other classes and their `*1`
equivalents too) are *incomparable* constraints. This has always been an
annoyance of working with the `*1` classes, and now it would rear it's
head one last time as an pesky migration.
Instead, we give the `*1` classes superclasses, like so:
```haskell
(forall a. Eq a => Eq (f a)) => Eq1 f
```
along with some laws that canonicity is preserved, like:
```haskell
liftEq (==) = (==)
```
and likewise for `*2` classes:
```haskell
(forall a. Eq a => Eq1 (f a)) => Eq2 f
```
and laws:
```haskell
liftEq2 (==) = liftEq1
```
The `*1` classes also have default methods using the `*2` classes where
possible.
What this means, as explained in the docs, is that `*1` classes really
are generations of the regular classes, indicating that the methods can
be split into a canonical lifting combined with a canonical inner, with
the super class "witnessing" the laws[1] in a fashion.
Circling back to the pragmatics of migrating, note that the superclass
means evidence for the old `Sum`, `Product`, and `Compose` instances is
(more than) sufficient, so breakage is less likely --- as long no
instances are "missing", existing polymorphic code will continue to
work.
Breakage can occur when a datatype implements the `*1` class but not the
corresponding regular class, but this is almost certainly an oversight.
For example, containers made that mistake for `Tree` and `Ord`, which I
fixed in https://github.com/haskell/containers/pull/761, but fixing the
issue by adding `Ord1` was extremely *un*controversial.
`Generically1` was also missing `Eq`, `Ord`, `Read,` and `Show`
instances. It is unlikely this would have been caught without
implementing this change.
-----
[1]: In fact, someday, when the laws are part of the language and not
only documentation, we might be able to drop the superclass field of the
dictionary by using the laws to recover the superclass in an
instance-agnostic manner, e.g. with a *non*-overloaded function with
type:
```haskell
DictEq1 f -> DictEq a -> DictEq (f a)
```
But I don't wish to get into optomizations now, just demonstrate the
close relationship between the law and the superclass.
Bump haddock submodule because of test output changing.
- - - - -
6a8c6b5e by Tom Ellis at 2022-09-20T13:12:27-04:00
Add notes to ghc-prim Haddocks that users should not import it
- - - - -
ee9d0f5c by matoro at 2022-09-20T13:13:06-04:00
docs: clarify that LLVM codegen is not available in unregisterised mode
The current docs are misleading and suggest that it is possible to use
LLVM codegen from an unregisterised build. This is not the case;
attempting to pass `-fllvm` to an unregisterised build warns:
```
when making flags consistent: warning:
Target platform uses unregisterised ABI, so compiling via C
```
and uses the C codegen anyway.
- - - - -
854224ed by Nicolas Trangez at 2022-09-20T20:14:29-04:00
rts: remove copy-paste error from `cabal.rts.in`
This was, likely accidentally, introduced in 4bf542bf1c.
See: 4bf542bf1cdf2fa468457fc0af21333478293476
- - - - -
c8ae3add by Matthew Pickering at 2022-09-20T20:15:04-04:00
hadrian: Add extra_dependencies edges for all different ways
The hack to add extra dependencies needed by DeriveLift extension missed
the cases for profiles and dynamic ways. For the profiled way this leads
to errors like:
```
GHC error in desugarer lookup in Data.IntSet.Internal:
Failed to load interface for ‘Language.Haskell.TH.Lib.Internal’
Perhaps you haven't installed the profiling libraries for package ‘template-haskell’?
Use -v (or `:set -v` in ghci) to see a list of the files searched for.
ghc: panic! (the 'impossible' happened)
GHC version 9.5.20220916:
initDs
```
Therefore the fix is to add these extra edges in.
Fixes #22197
- - - - -
a971657d by Mon Aaraj at 2022-09-21T06:41:24+03:00
users-guide: fix incorrect ghcappdata folder for unix and windows
- - - - -
06ccad0d by sheaf at 2022-09-21T08:28:49-04:00
Don't use isUnliftedType in isTagged
The function GHC.Stg.InferTags.Rewrite.isTagged can be given
the Id of a join point, which might be representation polymorphic.
This would cause the call to isUnliftedType to crash. It's better
to use typeLevity_maybe instead.
Fixes #22212
- - - - -
c0ba775d by Teo Camarasu at 2022-09-21T14:30:37-04:00
Add fragmentation statistic to GHC.Stats
Implements #21537
- - - - -
2463df2f by Torsten Schmits at 2022-09-21T14:31:24-04:00
Rename Solo[constructor] to MkSolo
Part of proposal 475 (https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0475-t…)
Moves all tuples to GHC.Tuple.Prim
Updates ghc-prim version (and bumps bounds in dependents)
updates haddock submodule
updates deepseq submodule
updates text submodule
- - - - -
9034fada by Matthew Pickering at 2022-09-22T09:25:29-04:00
Update filepath to filepath-1.4.100.0
Updates submodule
* Always rely on vendored filepath
* filepath must be built as stage0 dependency because it uses
template-haskell.
Towards #22098
- - - - -
615e2278 by Krzysztof Gogolewski at 2022-09-22T09:26:05-04:00
Minor refactor around Outputable
* Replace 'text . show' and 'ppr' with 'int'.
* Remove Outputable.hs-boot, no longer needed
* Use pprWithCommas
* Factor out instructions in AArch64 codegen
- - - - -
aeafdba5 by Sebastian Graf at 2022-09-27T15:14:54+02:00
Demand: Clear distinction between Call SubDmd and eval Dmd (#21717)
In #21717 we saw a reportedly unsound strictness signature due to an unsound
definition of plusSubDmd on Calls. This patch contains a description and the fix
to the unsoundness as outlined in `Note [Call SubDemand vs. evaluation Demand]`.
This fix means we also get rid of the special handling of `-fpedantic-bottoms`
in eta-reduction. Thanks to less strict and actually sound strictness results,
we will no longer eta-reduce the problematic cases in the first place, even
without `-fpedantic-bottoms`.
So fixing the unsoundness also makes our eta-reduction code simpler with less
hacks to explain. But there is another, more unfortunate side-effect:
We *unfix* #21085, but fortunately we have a new fix ready:
See `Note [mkCall and plusSubDmd]`.
There's another change:
I decided to make `Note [SubDemand denotes at least one evaluation]` a lot
simpler by using `plusSubDmd` (instead of `lubPlusSubDmd`) even if both argument
demands are lazy. That leads to less precise results, but in turn rids ourselves
from the need for 4 different `OpMode`s and the complication of
`Note [Manual specialisation of lub*Dmd/plus*Dmd]`. The result is simpler code
that is in line with the paper draft on Demand Analysis.
I left the abandoned idea in `Note [Unrealised opportunity in plusDmd]` for
posterity. The fallout in terms of regressions is negligible, as the testsuite
and NoFib shows.
```
Program Allocs Instrs
--------------------------------------------------------------------------------
hidden +0.2% -0.2%
linear -0.0% -0.7%
--------------------------------------------------------------------------------
Min -0.0% -0.7%
Max +0.2% +0.0%
Geometric Mean +0.0% -0.0%
```
Fixes #21717.
- - - - -
9b1595c8 by Ross Paterson at 2022-09-27T14:12:01-04:00
implement proposal 106 (Define Kinds Without Promotion) (fixes #6024)
includes corresponding changes to haddock submodule
- - - - -
c2d73cb4 by Andreas Klebinger at 2022-09-28T15:07:30-04:00
Apply some tricks to speed up core lint.
Below are the noteworthy changes and if given their impact on compiler
allocations for a type heavy module:
* Use the oneShot trick on LintM
* Use a unboxed tuple for the result of LintM: ~6% reduction
* Avoid a thunk for the result of typeKind in lintType: ~5% reduction
* lint_app: Don't allocate the error msg in the hot code path: ~4%
reduction
* lint_app: Eagerly force the in scope set: ~4%
* nonDetCmpType: Try to short cut using reallyUnsafePtrEquality#: ~2%
* lintM: Use a unboxed maybe for the `a` result: ~12%
* lint_app: make go_app tail recursive to avoid allocating the go function
as heap closure: ~7%
* expandSynTyCon_maybe: Use a specialized data type
For a less type heavy module like nofib/spectral/simple compiled with
-O -dcore-lint allocations went down by ~24% and compile time by ~9%.
-------------------------
Metric Decrease:
T1969
-------------------------
- - - - -
b74b6191 by sheaf at 2022-09-28T15:08:10-04:00
matchLocalInst: do domination analysis
When multiple Given quantified constraints match a Wanted, and there is
a quantified constraint that dominates all others, we now pick it
to solve the Wanted.
See Note [Use only the best matching quantified constraint].
For example:
[G] d1: forall a b. ( Eq a, Num b, C a b ) => D a b
[G] d2: forall a . C a Int => D a Int
[W] {w}: D a Int
When solving the Wanted, we find that both Givens match, but we pick
the second, because it has a weaker precondition, C a Int, compared
to (Eq a, Num Int, C a Int). We thus say that d2 dominates d1;
see Note [When does a quantified instance dominate another?].
This domination test is done purely in terms of superclass expansion,
in the function GHC.Tc.Solver.Interact.impliedBySCs. We don't attempt
to do a full round of constraint solving; this simple check suffices
for now.
Fixes #22216 and #22223
- - - - -
2a53ac18 by Simon Peyton Jones at 2022-09-28T17:49:09-04:00
Improve aggressive specialisation
This patch fixes #21286, by not unboxing dictionaries in
worker/wrapper (ever). The main payload is tiny:
* In `GHC.Core.Opt.DmdAnal.finaliseArgBoxities`, do not unbox
dictionaries in `get_dmd`. See Note [Do not unbox class dictionaries]
in that module
* I also found that imported wrappers were being fruitlessly
specialised, so I fixed that too, in canSpecImport.
See Note [Specialising imported functions] point (2).
In doing due diligence in the testsuite I fixed a number of
other things:
* Improve Note [Specialising unfoldings] in GHC.Core.Unfold.Make,
and Note [Inline specialisations] in GHC.Core.Opt.Specialise,
and remove duplication between the two. The new Note describes
how we specialise functions with an INLINABLE pragma.
And simplify the defn of `spec_unf` in `GHC.Core.Opt.Specialise.specCalls`.
* Improve Note [Worker/wrapper for INLINABLE functions] in
GHC.Core.Opt.WorkWrap.
And (critially) make an actual change which is to propagate the
user-written pragma from the original function to the wrapper; see
`mkStrWrapperInlinePrag`.
* Write new Note [Specialising imported functions] in
GHC.Core.Opt.Specialise
All this has a big effect on some compile times. This is
compiler/perf, showing only changes over 1%:
Metrics: compile_time/bytes allocated
-------------------------------------
LargeRecord(normal) -50.2% GOOD
ManyConstructors(normal) +1.0%
MultiLayerModulesTH_OneShot(normal) +2.6%
PmSeriesG(normal) -1.1%
T10547(normal) -1.2%
T11195(normal) -1.2%
T11276(normal) -1.0%
T11303b(normal) -1.6%
T11545(normal) -1.4%
T11822(normal) -1.3%
T12150(optasm) -1.0%
T12234(optasm) -1.2%
T13056(optasm) -9.3% GOOD
T13253(normal) -3.8% GOOD
T15164(normal) -3.6% GOOD
T16190(normal) -2.1%
T16577(normal) -2.8% GOOD
T16875(normal) -1.6%
T17836(normal) +2.2%
T17977b(normal) -1.0%
T18223(normal) -33.3% GOOD
T18282(normal) -3.4% GOOD
T18304(normal) -1.4%
T18698a(normal) -1.4% GOOD
T18698b(normal) -1.3% GOOD
T19695(normal) -2.5% GOOD
T5837(normal) -2.3%
T9630(normal) -33.0% GOOD
WWRec(normal) -9.7% GOOD
hard_hole_fits(normal) -2.1% GOOD
hie002(normal) +1.6%
geo. mean -2.2%
minimum -50.2%
maximum +2.6%
I diligently investigated some of the big drops.
* Caused by not doing w/w for dictionaries:
T13056, T15164, WWRec, T18223
* Caused by not fruitlessly specialising wrappers
LargeRecord, T9630
For runtimes, here is perf/should+_run:
Metrics: runtime/bytes allocated
--------------------------------
T12990(normal) -3.8%
T5205(normal) -1.3%
T9203(normal) -10.7% GOOD
haddock.Cabal(normal) +0.1%
haddock.base(normal) -1.1%
haddock.compiler(normal) -0.3%
lazy-bs-alloc(normal) -0.2%
------------------------------------------
geo. mean -0.3%
minimum -10.7%
maximum +0.1%
I did not investigate exactly what happens in T9203.
Nofib is a wash:
+-------------------------------++--+-----------+-----------+
| || | tsv (rel) | std. err. |
+===============================++==+===========+===========+
| real/anna || | -0.13% | 0.0% |
| real/fem || | +0.13% | 0.0% |
| real/fulsom || | -0.16% | 0.0% |
| real/lift || | -1.55% | 0.0% |
| real/reptile || | -0.11% | 0.0% |
| real/smallpt || | +0.51% | 0.0% |
| spectral/constraints || | +0.20% | 0.0% |
| spectral/dom-lt || | +1.80% | 0.0% |
| spectral/expert || | +0.33% | 0.0% |
+===============================++==+===========+===========+
| geom mean || | | |
+-------------------------------++--+-----------+-----------+
I spent quite some time investigating dom-lt, but it's pretty
complicated. See my note on !7847. Conclusion: it's just a delicate
inlining interaction, and we have plenty of those.
Metric Decrease:
LargeRecord
T13056
T13253
T15164
T16577
T18223
T18282
T18698a
T18698b
T19695
T9630
WWRec
hard_hole_fits
T9203
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addeefc0 by Simon Peyton Jones at 2022-09-28T17:49:09-04:00
Refactor UnfoldingSource and IfaceUnfolding
I finally got tired of the way that IfaceUnfolding reflected
a previous structure of unfoldings, not the current one. This
MR refactors UnfoldingSource and IfaceUnfolding to be simpler
and more consistent.
It's largely just a refactor, but in UnfoldingSource (which moves
to GHC.Types.Basic, since it is now used in IfaceSyn too), I
distinguish between /user-specified/ and /system-generated/ stable
unfoldings.
data UnfoldingSource
= VanillaSrc
| StableUserSrc -- From a user-specified pragma
| StableSystemSrc -- From a system-generated unfolding
| CompulsorySrc
This has a minor effect in CSE (see the use of isisStableUserUnfolding
in GHC.Core.Opt.CSE), which I tripped over when working on
specialisation, but it seems like a Good Thing to know anyway.
- - - - -
7be6f9a4 by Simon Peyton Jones at 2022-09-28T17:49:09-04:00
INLINE/INLINEABLE pragmas in Foreign.Marshal.Array
Foreign.Marshal.Array contains many small functions, all of which are
overloaded, and which are critical for performance. Yet none of them
had pragmas, so it was a fluke whether or not they got inlined.
This patch makes them all either INLINE (small ones) or
INLINEABLE and hence specialisable (larger ones).
See Note [Specialising array operations] in that module.
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b0c89dfa by Jade Lovelace at 2022-09-28T17:49:49-04:00
Export OnOff from GHC.Driver.Session
I was working on fixing an issue where HLS was trying to pass its
DynFlags to HLint, but didn't pass any of the disabled language
extensions, which HLint would then assume are on because of their
default values.
Currently it's not possible to get any of the "No" flags because the
`DynFlags.extensions` field can't really be used since it is [OnOff
Extension] and OnOff is not exported.
So let's export it.
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2f050687 by Andrew Lelechenko at 2022-09-28T17:50:28-04:00
Avoid Data.List.group; prefer Data.List.NonEmpty.group
This allows to avoid further partiality, e. g., map head . group is
replaced by map NE.head . NE.group, and there are less panic calls.
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bc0020fa by M Farkas-Dyck at 2022-09-28T22:51:59-04:00
Clean up `findWiredInUnit`. In particular, avoid `head`.
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6a2eec98 by Andrew Lelechenko at 2022-09-28T22:52:38-04:00
Eliminate headFS, use unconsFS instead
A small step towards #22185 to avoid partial functions + safe implementation
of `startsWithUnderscore`.
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5a535172 by Sebastian Graf at 2022-09-29T17:04:20+02:00
Demand: Format Call SubDemands `Cn(sd)` as `C(n,sd)` (#22231)
Justification in #22231. Short form: In a demand like `1C1(C1(L))`
it was too easy to confuse which `1` belongs to which `C`. Now
that should be more obvious.
Fixes #22231
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ea0083bf by Bryan Richter at 2022-09-29T15:48:38-04:00
Revert "ci: enable parallel compression for xz"
Combined wxth XZ_OPT=9, this blew the memory capacity of CI runners.
This reverts commit a5f9c35f5831ef5108e87813a96eac62803852ab.
- - - - -
f5e8f493 by Sebastian Graf at 2022-09-30T18:42:13+02:00
Boxity: Don't update Boxity unless worker/wrapper follows (#21754)
A small refactoring in our Core Opt pipeline and some new functions for
transfering argument boxities from one signature to another to facilitate
`Note [Don't change boxity without worker/wrapper]`.
Fixes #21754.
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4baf7b1c by M Farkas-Dyck at 2022-09-30T17:45:47-04:00
Scrub various partiality involving empty lists.
Avoids some uses of `head` and `tail`, and some panics when an argument is null.
- - - - -
95ead839 by Alexis King at 2022-10-01T00:37:43-04:00
Fix a bug in continuation capture across multiple stack chunks
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22096652 by Andrew Lelechenko at 2022-10-01T00:38:22-04:00
Enforce internal invariant of OrdList and fix bugs in viewCons / viewSnoc
`viewCons` used to ignore `Many` constructor completely, returning `VNothing`.
`viewSnoc` violated internal invariant of `Many` being a non-empty list.
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48ab9ca5 by Nicolas Trangez at 2022-10-04T20:34:10-04:00
chore: extend `.editorconfig` for C files
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b8df5c72 by Brandon Chinn at 2022-10-04T20:34:46-04:00
Fix docs for pattern synonyms
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463ffe02 by Oleg Grenrus at 2022-10-04T20:35:24-04:00
Use sameByteArray# in sameByteArray
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fbe1e86e by Pierre Le Marre at 2022-10-05T15:58:43+02:00
Minor fixes following Unicode 15.0.0 update
- Fix changelog for Unicode 15.0.0
- Fix the checksums of the downloaded Unicode files, in base's tool: "ucd2haskell".
- - - - -
8a31d02e by Cheng Shao at 2022-10-05T20:40:41-04:00
rts: don't enforce aligned((8)) on 32-bit targets
We simply need to align to the word size for pointer tagging to work. On
32-bit targets, aligned((8)) is wasteful.
- - - - -
532de368 by Ryan Scott at 2022-10-06T07:45:46-04:00
Export symbolSing, SSymbol, and friends (CLC#85)
This implements this Core Libraries Proposal:
https://github.com/haskell/core-libraries-committee/issues/85
In particular, it:
1. Exposes the `symbolSing` method of `KnownSymbol`,
2. Exports the abstract `SSymbol` type used in `symbolSing`, and
3. Defines an API for interacting with `SSymbol`.
This also makes corresponding changes for `natSing`/`KnownNat`/`SNat` and
`charSing`/`KnownChar`/`SChar`. This fixes #15183 and addresses part (2)
of #21568.
- - - - -
d83a92e6 by sheaf at 2022-10-07T07:36:30-04:00
Remove mention of make from README.md
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945e8e49 by Andrew Lelechenko at 2022-10-10T17:13:31-04:00
Add a newline before since pragma in Data.Array.Byte
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44fcdb04 by Vladislav Zavialov at 2022-10-10T17:14:06-04:00
Parser/PostProcess: rename failOp* functions
There are three functions named failOp* in the parser:
failOpNotEnabledImportQualifiedPost
failOpImportQualifiedTwice
failOpFewArgs
Only the last one has anything to do with operators. The other two
were named this way either by mistake or due to a misunderstanding of
what "op" stands for. This small patch corrects this.
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96d32ff2 by Simon Peyton Jones at 2022-10-10T22:30:21+01:00
Make rewrite rules "win" over inlining
If a rewrite rule and a rewrite rule compete in the simplifier, this
patch makes sure that the rewrite rule "win". That is, in general
a bit fragile, but it's a huge help when making specialisation work
reliably, as #21851 and #22097 showed.
The change is fairly straightforwad, and documented in
Note [Rewrite rules and inlining]
in GHC.Core.Opt.Simplify.Iteration.
Compile-times change, up and down a bit -- in some cases because
we get better specialisation. But the payoff (more reliable
specialisation) is large.
Metrics: compile_time/bytes allocated
-----------------------------------------------
T10421(normal) +3.7% BAD
T10421a(normal) +5.5%
T13253(normal) +1.3%
T14052(ghci) +1.8%
T15304(normal) -1.4%
T16577(normal) +3.1% BAD
T17516(normal) +2.3%
T17836(normal) -1.9%
T18223(normal) -1.8%
T8095(normal) -1.3%
T9961(normal) +2.5% BAD
geo. mean +0.0%
minimum -1.9%
maximum +5.5%
Nofib results are (bytes allocated)
+-------------------------------++----------+
| ||tsv (rel) |
+===============================++==========+
| imaginary/paraffins || +0.27% |
| imaginary/rfib || -0.04% |
| real/anna || +0.02% |
| real/fem || -0.04% |
| real/fluid || +1.68% |
| real/gamteb || -0.34% |
| real/gg || +1.54% |
| real/hidden || -0.01% |
| real/hpg || -0.03% |
| real/infer || -0.03% |
| real/prolog || +0.02% |
| real/veritas || -0.47% |
| shootout/fannkuch-redux || -0.03% |
| shootout/k-nucleotide || -0.02% |
| shootout/n-body || -0.06% |
| shootout/spectral-norm || -0.01% |
| spectral/cryptarithm2 || +1.25% |
| spectral/fibheaps || +18.33% |
| spectral/last-piece || -0.34% |
+===============================++==========+
| geom mean || +0.17% |
There are extensive notes in !8897 about the regressions.
Briefly
* fibheaps: there was a very delicately balanced inlining that
tipped over the wrong way after this change.
* cryptarithm2 and paraffins are caused by #22274, which is
a separate issue really. (I.e. the right fix is *not* to
make inlining "win" over rules.)
So I'm accepting these changes
Metric Increase:
T10421
T16577
T9961
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ed4b5885 by Joachim Breitner at 2022-10-10T23:16:11-04:00
Utils.JSON: do not escapeJsonString in ToJson String instance
as `escapeJsonString` is used in `renderJSON`, so the `JSString`
constructor is meant to carry the unescaped string.
- - - - -
fbb88740 by Matthew Pickering at 2022-10-11T12:48:45-04:00
Tidy implicit binds
We want to put implicit binds into fat interface files, so the easiest
thing to do seems to be to treat them uniformly with other binders.
- - - - -
e058b138 by Matthew Pickering at 2022-10-11T12:48:45-04:00
Interface Files with Core Definitions
This commit adds three new flags
* -fwrite-if-simplified-core: Writes the whole core program into an interface
file
* -fbyte-code-and-object-code: Generate both byte code and object code
when compiling a file
* -fprefer-byte-code: Prefer to use byte-code if it's available when
running TH splices.
The goal for including the core bindings in an interface file is to be able to restart the compiler pipeline
at the point just after simplification and before code generation. Once compilation is
restarted then code can be created for the byte code backend.
This can significantly speed up
start-times for projects in GHCi. HLS already implements its own version of these extended interface
files for this reason.
Preferring to use byte-code means that we can avoid some potentially
expensive code generation steps (see #21700)
* Producing object code is much slower than producing bytecode, and normally you
need to compile with `-dynamic-too` to produce code in the static and dynamic way, the
dynamic way just for Template Haskell execution when using a dynamically linked compiler.
* Linking many large object files, which happens once per splice, can be quite
expensive compared to linking bytecode.
And you can get GHC to compile the necessary byte code so
`-fprefer-byte-code` has access to it by using
`-fbyte-code-and-object-code`.
Fixes #21067
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9789ea8e by Matthew Pickering at 2022-10-11T12:48:45-04:00
Teach -fno-code about -fprefer-byte-code
This patch teachs the code generation logic of -fno-code about
-fprefer-byte-code, so that if we need to generate code for a module
which prefers byte code, then we generate byte code rather than object
code.
We keep track separately which modules need object code and which byte
code and then enable the relevant code generation for each. Typically
the option will be enabled globally so one of these sets should be empty
and we will just turn on byte code or object code generation.
We also fix the bug where we would generate code for a module which
enables Template Haskell despite the fact it was unecessary.
Fixes #22016
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caced757 by Simon Peyton Jones at 2022-10-11T12:49:21-04:00
Don't keep exit join points so much
We were religiously keeping exit join points throughout, which
had some bad effects (#21148, #22084).
This MR does two things:
* Arranges that exit join points are inhibited from inlining
only in /one/ Simplifier pass (right after Exitification).
See Note [Be selective about not-inlining exit join points]
in GHC.Core.Opt.Exitify
It's not a big deal, but it shaves 0.1% off compile times.
* Inline used-once non-recursive join points very aggressively
Given join j x = rhs in
joinrec k y = ....j x....
where this is the only occurrence of `j`, we want to inline `j`.
(Unless sm_keep_exits is on.)
See Note [Inline used-once non-recursive join points] in
GHC.Core.Opt.Simplify.Utils
This is just a tidy-up really. It doesn't change allocation, but
getting rid of a binding is always good.
Very effect on nofib -- some up and down.
- - - - -
284cf387 by Simon Peyton Jones at 2022-10-11T12:49:21-04:00
Make SpecConstr bale out less often
When doing performance debugging on #22084 / !8901, I found that the
algorithm in SpecConstr.decreaseSpecCount was so aggressive that if
there were /more/ specialisations available for an outer function,
that could more or less kill off specialisation for an /inner/
function. (An example was in nofib/spectral/fibheaps.)
This patch makes it a bit more aggressive, by dividing by 2, rather
than by the number of outer specialisations.
This makes the program bigger, temporarily:
T19695(normal) ghc/alloc +11.3% BAD
because we get more specialisation. But lots of other programs
compile a bit faster and the geometric mean in perf/compiler
is 0.0%.
Metric Increase:
T19695
- - - - -
66af1399 by Cheng Shao at 2022-10-11T12:49:59-04:00
CmmToC: emit explicit tail calls when the C compiler supports it
Clang 13+ supports annotating a return statement using the musttail
attribute, which guarantees that it lowers to a tail call if compilation
succeeds.
This patch takes advantage of that feature for the unregisterised code
generator. The configure script tests availability of the musttail
attribute, if it's available, the Cmm tail calls will become C tail
calls that avoids the mini interpreter trampoline overhead. Nothing is
affected if the musttail attribute is not supported.
Clang documentation:
https://clang.llvm.org/docs/AttributeReference.html#musttail
- - - - -
7f0decd5 by Matthew Pickering at 2022-10-11T12:50:40-04:00
Don't include BufPos in interface files
Ticket #22162 pointed out that the build directory was leaking into the
ABI hash of a module because the BufPos depended on the location of the
build tree.
BufPos is only used in GHC.Parser.PostProcess.Haddock, and the
information doesn't need to be propagated outside the context of a
module.
Fixes #22162
- - - - -
dce9f320 by Cheng Shao at 2022-10-11T12:51:19-04:00
CLabel: fix isInfoTableLabel
isInfoTableLabel does not take Cmm info table into account. This patch is required for data section layout of wasm32 NCG to work.
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da679f2e by Andrew Lelechenko at 2022-10-11T18:02:59-04:00
Extend documentation for Data.List, mostly wrt infinite lists
- - - - -
9c099387 by jwaldmann at 2022-10-11T18:02:59-04:00
Expand comment for Data.List.permutations
- - - - -
d3863cb7 by Andrew Lelechenko at 2022-10-11T18:03:37-04:00
ByteArray# is unlifted, not unboxed
- - - - -
f6260e8b by Ben Gamari at 2022-10-11T23:45:10-04:00
rts: Add missing declaration of stg_noDuplicate
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69ccec2c by Ben Gamari at 2022-10-11T23:45:10-04:00
base: Move CString, CStringLen to GHC.Foreign
- - - - -
f6e8feb4 by Ben Gamari at 2022-10-11T23:45:10-04:00
base: Move IPE helpers to GHC.InfoProv
- - - - -
866c736e by Ben Gamari at 2022-10-11T23:45:10-04:00
rts: Refactor IPE tracing support
- - - - -
6b0d2022 by Ben Gamari at 2022-10-11T23:45:10-04:00
Refactor IPE initialization
Here we refactor the representation of info table provenance information
in object code to significantly reduce its size and link-time impact.
Specifically, we deduplicate strings and represent them as 32-bit
offsets into a common string table.
In addition, we rework the registration logic to eliminate allocation
from the registration path, which is run from a static initializer where
things like allocation are technically undefined behavior (although it
did previously seem to work). For similar reasons we eliminate lock
usage from registration path, instead relying on atomic CAS.
Closes #22077.
- - - - -
9b572d54 by Ben Gamari at 2022-10-11T23:45:10-04:00
Separate IPE source file from span
The source file name can very often be shared across many IPE entries
whereas the source coordinates are generally unique. Separate the two to
exploit sharing of the former.
- - - - -
27978ceb by Krzysztof Gogolewski at 2022-10-11T23:45:46-04:00
Make Cmm Lint messages use dump style
Lint errors indicate an internal error in GHC, so it makes sense to use
it instead of the user style. This is consistent with Core Lint and STG Lint:
https://gitlab.haskell.org/ghc/ghc/-/blob/22096652/compiler/GHC/Core/Lint.h…
https://gitlab.haskell.org/ghc/ghc/-/blob/22096652/compiler/GHC/Stg/Lint.hs…
Fixes #22218.
- - - - -
64a390d9 by Bryan Richter at 2022-10-12T09:52:51+03:00
Mark T7919 as fragile
On x86_64-linux, T7919 timed out ~30 times during July 2022.
And again ~30 times in September 2022.
- - - - -
481467a5 by Ben Gamari at 2022-10-12T08:08:37-04:00
rts: Don't hint inlining of appendToRunQueue
These hints have resulted in compile-time warnings due to failed
inlinings for quite some time. Moreover, it's quite unlikely that
inlining them is all that beneficial given that they are rather sizeable
functions.
Resolves #22280.
- - - - -
81915089 by Curran McConnell at 2022-10-12T16:32:26-04:00
remove name shadowing
- - - - -
626652f7 by Tamar Christina at 2022-10-12T16:33:13-04:00
winio: do not re-translate input when handle is uncooked
- - - - -
5172789a by Charles Taylor at 2022-10-12T16:33:57-04:00
Unrestricted OverloadedLabels (#11671)
Implements GHC proposal:
https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0170-u…
- - - - -
ce293908 by Andreas Klebinger at 2022-10-13T05:58:19-04:00
Add a perf test for the generics code pattern from #21839.
This code showed a strong shift between compile time (got worse) and
run time (got a lot better) recently which is perfectly acceptable.
However it wasn't clear why the compile time regression was happening
initially so I'm adding this test to make it easier to track such changes
in the future.
- - - - -
78ab7afe by Ben Gamari at 2022-10-13T05:58:56-04:00
rts/linker: Consolidate initializer/finalizer handling
Here we extend our treatment of initializer/finalizer priorities to
include ELF and in so doing refactor things to share the implementation
with PEi386. As well, I fix a subtle misconception of the ordering
behavior for `.ctors`.
Fixes #21847.
- - - - -
44692713 by Ben Gamari at 2022-10-13T05:58:56-04:00
rts/linker: Add support for .fini sections
- - - - -
beebf546 by Simon Hengel at 2022-10-13T05:59:37-04:00
Update phases.rst
(the name of the original source file is $1, not $2)
- - - - -
eda6c05e by Finley McIlwaine at 2022-10-13T06:00:17-04:00
Clearer error msg for newtype GADTs with defaulted kind
When a newtype introduces GADT eq_specs due to a defaulted
RuntimeRep, we detect this and print the error message with
explicit kinds.
This also refactors newtype type checking to use the new
diagnostic infra.
Fixes #21447
- - - - -
43ab435a by Pierre Le Marre at 2022-10-14T07:45:43-04:00
Add standard Unicode case predicates isUpperCase and isLowerCase.
These predicates use the standard Unicode case properties and are more intuitive than isUpper and isLower.
Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/90#issuecomment-….
Fixes #14589
- - - - -
aec5a443 by Andrew Lelechenko at 2022-10-14T07:46:21-04:00
Add type signatures in where-clause of Data.List.permutations
The type of interleave' is very much revealing, otherwise it's extremely tough to decipher.
- - - - -
ee0deb80 by Ben Gamari at 2022-10-14T18:29:20-04:00
rts: Use pthread_setname_np correctly on Darwin
As noted in #22206, pthread_setname_np on Darwin only supports
setting the name of the calling thread. Consequently we must introduce
a trampoline which first sets the thread name before entering the thread
entrypoint.
- - - - -
8eff62a4 by Ben Gamari at 2022-10-14T18:29:57-04:00
testsuite: Add test for #22282
This will complement mpickering's more general port of foundation's
numerical testsuite, providing a test for the specific case found
in #22282.
- - - - -
62a55001 by Ben Gamari at 2022-10-14T18:29:57-04:00
ncg/aarch64: Fix sub-word sign extension yet again
In adc7f108141a973b6dcb02a7836eed65d61230e8 we fixed a number of issues
to do with sign extension in the AArch64 NCG found by ghc/test-primops>.
However, this patch made a critical error, assuming that getSomeReg
would allocate a fresh register for the result of its evaluation.
However, this is not the case as `getSomeReg (CmmReg r) == r`.
Consequently, any mutation of the register returned by `getSomeReg` may
have unwanted side-effects on other expressions also mentioning `r`. In
the fix listed above, this manifested as the registers containing the
operands of binary arithmetic operations being incorrectly
sign-extended. This resulted in #22282.
Sadly, the rather simple structure of the tests generated
by `test-primops` meant that this particular case was not exercised.
Even more surprisingly, none of our testsuite caught this case.
Here we fix this by ensuring that intermediate sign extension is
performed in a fresh register.
Fixes #22282.
- - - - -
54e41b16 by Teo Camarasu at 2022-10-15T18:09:24+01:00
rts: ensure we are below maxHeapSize after returning megablocks
When the heap is heavily block fragmented the live byte size might be
low while the memory usage is high. We want to ensure that heap overflow
triggers in these cases.
We do so by checking that we can return enough megablocks to
under maxHeapSize at the end of GC.
- - - - -
29bb90db by Teo Camarasu at 2022-10-15T18:09:24+01:00
rts: trigger a major collection if megablock usage exceeds maxHeapSize
When the heap is suffering from block fragmentation, live bytes might be
low while megablock usage is high.
If megablock usage exceeds maxHeapSize, we want to trigger a major GC to
try to recover some memory otherwise we will die from a heapOverflow at
the end of the GC.
Fixes #21927
- - - - -
4a4641ca by Teo Camarasu at 2022-10-15T18:11:29+01:00
Add realease note for #21927
- - - - -
c1e5719a by Sebastian Graf at 2022-10-17T11:58:46-04:00
DmdAnal: Look through unfoldings of DataCon wrappers (#22241)
Previously, the demand signature we computed upfront for a DataCon wrapper
lacked boxity information and was much less precise than the demand transformer
for the DataCon worker.
In this patch we adopt the solution to look through unfoldings of DataCon
wrappers during Demand Analysis, but still attach a demand signature for other
passes such as the Simplifier.
See `Note [DmdAnal for DataCon wrappers]` for more details.
Fixes #22241.
- - - - -
8c72411d by Gergő Érdi at 2022-10-17T19:20:04-04:00
Add `Enum (Down a)` instance that swaps `succ` and `pred`
See https://github.com/haskell/core-libraries-committee/issues/51 for
discussion. The key points driving the implementation are the following
two ideas:
* For the `Int` type, `comparing (complement @Int)` behaves exactly as
an order-swapping `compare @Int`.
* `enumFrom @(Down a)` can be implemented in terms of `enumFromThen @a`,
if only the corner case of starting at the very end is handled specially
- - - - -
d80ad2f4 by Alan Zimmerman at 2022-10-17T19:20:40-04:00
Update the check-exact infrastructure to match ghc-exactprint
GHC tests the exact print annotations using the contents of
utils/check-exact.
The same functionality is provided via
https://github.com/alanz/ghc-exactprint
The latter was updated to ensure it works with all of the files on
hackage when 9.2 was released, as well as updated to ensure users of
the library could work properly (apply-refact, retrie, etc).
This commit brings the changes from ghc-exactprint into
GHC/utils/check-exact, adapting for the changes to master.
Once it lands, it will form the basis for the 9.4 version of
ghc-exactprint.
See also discussion around this process at #21355
- - - - -
08ab5419 by Andreas Klebinger at 2022-10-17T19:21:15-04:00
Avoid allocating intermediate lists for non recursive bindings.
We do so by having an explicit folding function that doesn't need to
allocate intermediate lists first.
Fixes #22196
- - - - -
ff6275ef by Andreas Klebinger at 2022-10-17T19:21:52-04:00
Testsuite: Add a new tables_next_to_code predicate.
And use it to avoid T21710a failing on non-tntc archs.
Fixes #22169
- - - - -
abb82f38 by Eric Lindblad at 2022-10-17T19:22:33-04:00
example rewrite
- - - - -
39beb801 by Eric Lindblad at 2022-10-17T19:22:33-04:00
remove redirect
- - - - -
0d9fb651 by Eric Lindblad at 2022-10-17T19:22:33-04:00
use heredoc
- - - - -
0fa2d185 by Matthew Pickering at 2022-10-17T19:23:10-04:00
testsuite: Fix typo when setting llvm_ways
Since 2014 llvm_ways has been set to [] so none of the tests which use
only_ways(llvm_ways) have worked as expected.
Hopefully the tests still pass with this typo fix!
- - - - -
ced664a2 by Krzysztof Gogolewski at 2022-10-17T19:23:10-04:00
Fix T15155l not getting -fllvm
- - - - -
0ac60423 by Andreas Klebinger at 2022-10-18T03:34:47-04:00
Fix GHCis interaction with tag inference.
I had assumed that wrappers were not inlined in interactive mode.
Meaning we would always execute the compiled wrapper which properly
takes care of upholding the strict field invariant.
This turned out to be wrong. So instead we now run tag inference even
when we generate bytecode. In that case only for correctness not
performance reasons although it will be still beneficial for runtime
in some cases.
I further fixed a bug where GHCi didn't tag nullary constructors
properly when used as arguments. Which caused segfaults when calling
into compiled functions which expect the strict field invariant to
be upheld.
Fixes #22042 and #21083
-------------------------
Metric Increase:
T4801
Metric Decrease:
T13035
-------------------------
- - - - -
9ecd1ac0 by M Farkas-Dyck at 2022-10-18T03:35:38-04:00
Make `Functor` a superclass of `TrieMap`, which lets us derive the `map` functions.
- - - - -
f60244d7 by Ben Gamari at 2022-10-18T03:36:15-04:00
configure: Bump minimum bootstrap GHC version
Fixes #22245
- - - - -
ba4bd4a4 by Matthew Pickering at 2022-10-18T03:36:55-04:00
Build System: Remove out-of-date comment about make build system
Both make and hadrian interleave compilation of modules of different
modules and don't respect the package boundaries. Therefore I just
remove this comment which points out this "difference".
Fixes #22253
- - - - -
e1bbd368 by Matthew Pickering at 2022-10-18T16:15:49+02:00
Allow configuration of error message printing
This MR implements the idea of #21731 that the printing of a diagnostic
method should be configurable at the printing time.
The interface of the `Diagnostic` class is modified from:
```
class Diagnostic a where
diagnosticMessage :: a -> DecoratedSDoc
diagnosticReason :: a -> DiagnosticReason
diagnosticHints :: a -> [GhcHint]
```
to
```
class Diagnostic a where
type DiagnosticOpts a
defaultDiagnosticOpts :: DiagnosticOpts a
diagnosticMessage :: DiagnosticOpts a -> a -> DecoratedSDoc
diagnosticReason :: a -> DiagnosticReason
diagnosticHints :: a -> [GhcHint]
```
and so each `Diagnostic` can implement their own configuration record
which can then be supplied by a client in order to dictate how to print
out the error message.
At the moment this only allows us to implement #21722 nicely but in
future it is more natural to separate the configuration of how much
information we put into an error message and how much we decide to print
out of it.
Updates Haddock submodule
- - - - -
99dc3e3d by Matthew Pickering at 2022-10-18T16:15:53+02:00
Add -fsuppress-error-contexts to disable printing error contexts in errors
In many development environments, the source span is the primary means
of seeing what an error message relates to, and the In the expression:
and In an equation for: clauses are not particularly relevant. However,
they can grow to be quite long, which can make the message itself both
feel overwhelming and interact badly with limited-space areas.
It's simple to implement this flag so we might as well do it and give
the user control about how they see their messages.
Fixes #21722
- - - - -
5b3a992f by Dai at 2022-10-19T10:45:45-04:00
Add VecSlot for unboxed sums of SIMD vectors
This patch adds the missing `VecRep` case to `primRepSlot` function and
all the necessary machinery to carry this new `VecSlot` through code
generation. This allows programs involving unboxed sums of SIMD vectors
to be written and compiled.
Fixes #22187
- - - - -
6d7d9181 by sheaf at 2022-10-19T10:45:45-04:00
Remove SIMD conversions
This patch makes it so that packing/unpacking SIMD
vectors always uses the right sized types, e.g.
unpacking a Word16X4# will give a tuple of Word16#s.
As a result, we can get rid of the conversion instructions
that were previously required.
Fixes #22296
- - - - -
3be48877 by sheaf at 2022-10-19T10:45:45-04:00
Cmm Lint: relax SIMD register assignment check
As noted in #22297, SIMD vector registers can be used
to store different kinds of values, e.g. xmm1 can be used
both to store integer and floating point values.
The Cmm type system doesn't properly account for this, so
we weaken the Cmm register assignment lint check to only
compare widths when comparing a vector type with its
allocated vector register.
- - - - -
f7b7a312 by sheaf at 2022-10-19T10:45:45-04:00
Disable some SIMD tests on non-X86 architectures
- - - - -
83638dce by M Farkas-Dyck at 2022-10-19T10:46:29-04:00
Scrub various partiality involving lists (again).
Lets us avoid some use of `head` and `tail`, and some panics.
- - - - -
c3732c62 by M Farkas-Dyck at 2022-10-19T10:47:13-04:00
Enforce invariant of `ListBag` constructor.
- - - - -
488d3631 by Andrew Lelechenko at 2022-10-19T10:47:52-04:00
More precise types for fields of OverlappingInstances and UnsafeOverlap in TcSolverReportMsg
It's clear from asserts in `GHC.Tc.Errors` that `overlappingInstances_matches`
and `unsafeOverlapped` are supposed to be non-empty, and `unsafeOverlap_matches`
contains a single instance, but these invariants are immediately lost afterwards
and not encoded in types. This patch enforces the invariants by pattern matching
and makes types more precise, avoiding asserts and partial functions such as `head`.
- - - - -
607ce263 by sheaf at 2022-10-19T10:47:52-04:00
Rename unsafeOverlap_matches -> unsafeOverlap_match in UnsafeOverlap
- - - - -
1fab9598 by Matthew Pickering at 2022-10-19T10:48:29-04:00
Add SpliceTypes test for hie files
This test checks that typed splices and quotes get the right type
information when used in hiefiles.
See #21619
- - - - -
a8b52786 by Jan Hrček at 2022-10-19T10:49:09-04:00
Small language fixes in 'Using GHC'
- - - - -
1dab1167 by Gergő Érdi at 2022-10-19T10:49:51-04:00
Fix typo in `Opt_WriteIfSimplifiedCore`'s name
- - - - -
b17cfc9c by sheaf at 2022-10-19T10:50:37-04:00
TyEq:N assertion: only for saturated applications
The assertion that checked TyEq:N in canEqCanLHSFinish incorrectly
triggered in the case of an unsaturated newtype TyCon heading the RHS,
even though we can't unwrap such an application. Now, we only trigger
an assertion failure in case of a saturated application of a newtype
TyCon.
Fixes #22310
- - - - -
ff6f2228 by M Farkas-Dyck at 2022-10-20T16:15:51-04:00
CoreToStg: purge `DynFlags`.
- - - - -
1ebd521f by Matthew Pickering at 2022-10-20T16:16:27-04:00
ci: Make fat014 test robust
For some reason I implemented this as a makefile test rather than a
ghci_script test. Hopefully making it a ghci_script test makes it more
robust.
Fixes #22313
- - - - -
8cd6f435 by Curran McConnell at 2022-10-21T02:58:01-04:00
remove a no-warn directive from GHC.Cmm.ContFlowOpt
This patch is motivated by the desire to remove the {-# OPTIONS_GHC
-fno-warn-incomplete-patterns #-} directive at the top of
GHC.Cmm.ContFlowOpt. (Based on the text in this coding standards doc, I
understand it's a goal of the project to remove such directives.) I
chose this task because I'm a new contributor to GHC, and it seemed like
a good way to get acquainted with the patching process.
In order to address the warning that arose when I removed the no-warn
directive, I added a case to removeUnreachableBlocksProc to handle the
CmmData constructor. Clearly, since this partial function has not been
erroring out in the wild, its inputs are always in practice wrapped by
the CmmProc constructor. Therefore the CmmData case is handled by a
precise panic (which is an improvement over the partial pattern match
from before).
- - - - -
a2af7c4c by Nicolas Trangez at 2022-10-21T02:58:39-04:00
build: get rid of `HAVE_TIME_H`
As advertized by `autoreconf`:
> All current systems provide time.h; it need not be checked for.
Hence, remove the check for it in `configure.ac` and remove conditional
inclusion of the header in `HAVE_TIME_H` blocks where applicable.
The `time.h` header was being included in various source files without a
`HAVE_TIME_H` guard already anyway.
- - - - -
25cdc630 by Nicolas Trangez at 2022-10-21T02:58:39-04:00
rts: remove use of `TIME_WITH_SYS_TIME`
`autoreconf` will insert an `m4_warning` when the obsolescent
`AC_HEADER_TIME` macro is used:
> Update your code to rely only on HAVE_SYS_TIME_H,
> then remove this warning and the obsolete code below it.
> All current systems provide time.h; it need not be checked for.
> Not all systems provide sys/time.h, but those that do, all allow
> you to include it and time.h simultaneously.
Presence of `sys/time.h` was already checked in an earlier
`AC_CHECK_HEADERS` invocation, so `AC_HEADER_TIME` can be dropped and
guards relying on `TIME_WITH_SYS_TIME` can be reworked to
(unconditionally) include `time.h` and include `sys/time.h` based on
`HAVE_SYS_TIME_H`.
Note the documentation of `AC_HEADER_TIME` in (at least) Autoconf 2.67
says
> This macro is obsolescent, as current systems can include both files
> when they exist. New programs need not use this macro.
- - - - -
1fe7921c by Eric Lindblad at 2022-10-21T02:59:21-04:00
runhaskell
- - - - -
e3b3986e by David Feuer at 2022-10-21T03:00:00-04:00
Document how to quote certain names with spaces
Quoting a name for Template Haskell is a bit tricky if the second
character of that name is a single quote. The User's Guide falsely
claimed that it was impossible. Document how to do it.
Fixes #22236
- - - - -
0eba81e8 by Krzysztof Gogolewski at 2022-10-21T03:00:00-04:00
Fix syntax
- - - - -
a4dbd102 by Ben Gamari at 2022-10-21T09:11:12-04:00
Fix manifest filename when writing Windows .rc files
As noted in #12971, we previously used `show` which resulted in
inappropriate escaping of non-ASCII characters.
- - - - -
30f0d9a9 by Ben Gamari at 2022-10-21T09:11:12-04:00
Write response files in UTF-8 on Windows
This reverts the workaround introduced in
f63c8ef33ec9666688163abe4ccf2d6c0428a7e7, which taught our response file
logic to write response files with the `latin1` encoding to workaround
`gcc`'s lacking Unicode support. This is now no longer necessary (and in
fact actively unhelpful) since we rather use Clang.
- - - - -
b8304648 by Matthew Farkas-Dyck at 2022-10-21T09:11:56-04:00
Scrub some partiality in `GHC.Core.Opt.Simplify.Utils`.
- - - - -
09ec7de2 by Teo Camarasu at 2022-10-21T13:23:07-04:00
template-haskell: Improve documentation of strictness annotation types
Before it was undocumentated that DecidedLazy can be returned by
reifyConStrictness for strict fields. This can happen when a field has
an unlifted type or its the single field of a newtype constructor.
Fixes #21380
- - - - -
88172069 by M Farkas-Dyck at 2022-10-21T13:23:51-04:00
Delete `eqExpr`, since GHC 9.4 has been released.
- - - - -
86e6549e by Ömer Sinan Ağacan at 2022-10-22T07:41:30-04:00
Introduce a standard thunk for allocating strings
Currently for a top-level closure in the form
hey = unpackCString# x
we generate code like this:
Main.hey_entry() // [R1]
{ info_tbls: [(c2T4,
label: Main.hey_info
rep: HeapRep static { Thunk }
srt: Nothing)]
stack_info: arg_space: 8 updfr_space: Just 8
}
{offset
c2T4: // global
_rqm::P64 = R1;
if ((Sp + 8) - 24 < SpLim) (likely: False) goto c2T5; else goto c2T6;
c2T5: // global
R1 = _rqm::P64;
call (stg_gc_enter_1)(R1) args: 8, res: 0, upd: 8;
c2T6: // global
(_c2T1::I64) = call "ccall" arg hints: [PtrHint,
PtrHint] result hints: [PtrHint] newCAF(BaseReg, _rqm::P64);
if (_c2T1::I64 == 0) goto c2T3; else goto c2T2;
c2T3: // global
call (I64[_rqm::P64])() args: 8, res: 0, upd: 8;
c2T2: // global
I64[Sp - 16] = stg_bh_upd_frame_info;
I64[Sp - 8] = _c2T1::I64;
R2 = hey1_r2Gg_bytes;
Sp = Sp - 16;
call GHC.CString.unpackCString#_info(R2) args: 24, res: 0, upd: 24;
}
}
This code is generated for every string literal. Only difference between
top-level closures like this is the argument for the bytes of the string
(hey1_r2Gg_bytes in the code above).
With this patch we introduce a standard thunk in the RTS, called
stg_MK_STRING_info, that does what `unpackCString# x` does, except it
gets the bytes address from the payload. Using this, for the closure
above, we generate this:
Main.hey_closure" {
Main.hey_closure:
const stg_MK_STRING_info;
const 0; // padding for indirectee
const 0; // static link
const 0; // saved info
const hey1_r1Gg_bytes; // the payload
}
This is much smaller in code.
Metric Decrease:
T10421
T11195
T12150
T12425
T16577
T18282
T18698a
T18698b
Co-Authored By: Ben Gamari <ben(a)well-typed.com>
- - - - -
1937016b by Andreas Klebinger at 2022-10-22T07:42:06-04:00
hadrian: Improve error for wrong key/value errors.
- - - - -
11fe42d8 by Vladislav Zavialov at 2022-10-23T00:11:50+03:00
Class layout info (#19623)
Updates the haddock submodule.
- - - - -
f0a90c11 by Sven Tennie at 2022-10-24T00:12:51-04:00
Pin used way for test cloneMyStack (#21977)
cloneMyStack checks the order of closures on the cloned stack. This may
change for different ways. Thus we limit this test to one way (normal).
- - - - -
0614e74d by Aaron Allen at 2022-10-24T17:11:21+02:00
Convert Diagnostics in GHC.Tc.Gen.Splice (#20116)
Replaces uses of `TcRnUnknownMessage` in `GHC.Tc.Gen.Splice` with
structured diagnostics.
closes #20116
- - - - -
8d2dbe2d by Andreas Klebinger at 2022-10-24T15:59:41-04:00
Improve stg lint for unboxed sums.
It now properly lints cases where sums end up distributed
over multiple args after unarise.
Fixes #22026.
- - - - -
41406da5 by Simon Peyton Jones at 2022-10-25T18:07:03-04:00
Fix binder-swap bug
This patch fixes #21229 properly, by avoiding doing a
binder-swap on dictionary Ids. This is pretty subtle, and explained
in Note [Care with binder-swap on dictionaries].
Test is already in simplCore/should_run/T21229
This allows us to restore a feature to the specialiser that we had
to revert: see Note [Specialising polymorphic dictionaries].
(This is done in a separate patch.)
I also modularised things, using a new function scrutBinderSwap_maybe
in all the places where we are (effectively) doing a binder-swap,
notably
* Simplify.Iteration.addAltUnfoldings
* SpecConstr.extendCaseBndrs
In Simplify.Iteration.addAltUnfoldings I also eliminated a guard
Many <- idMult case_bndr
because we concluded, in #22123, that it was doing no good.
- - - - -
5a997e16 by Simon Peyton Jones at 2022-10-25T18:07:03-04:00
Make the specialiser handle polymorphic specialisation
Ticket #13873 unexpectedly showed that a SPECIALISE pragma made a
program run (a lot) slower, because less specialisation took place
overall. It turned out that the specialiser was missing opportunities
because of quantified type variables.
It was quite easy to fix. The story is given in
Note [Specialising polymorphic dictionaries]
Two other minor fixes in the specialiser
* There is no benefit in specialising data constructor /wrappers/.
(They can appear overloaded because they are given a dictionary
to store in the constructor.) Small guard in canSpecImport.
* There was a buglet in the UnspecArg case of specHeader, in the
case where there is a dead binder. We need a LitRubbish filler
for the specUnfolding stuff. I expanded
Note [Drop dead args from specialisations] to explain.
There is a 4% increase in compile time for T15164, because we generate
more specialised code. This seems OK.
Metric Increase:
T15164
- - - - -
7f203d00 by Sylvain Henry at 2022-10-25T18:07:43-04:00
Numeric exceptions: replace FFI calls with primops
ghc-bignum needs a way to raise numerical exceptions defined in base
package. At the time we used FFI calls into primops defined in the RTS.
These FFI calls had to be wrapped into hacky bottoming functions because
"foreign import prim" syntax doesn't support giving a bottoming demand
to the foreign call (cf #16929).
These hacky wrapper functions trip up the JavaScript backend (#21078)
because they are polymorphic in their return type. This commit
replaces them with primops very similar to raise# but raising predefined
exceptions.
- - - - -
0988a23d by Sylvain Henry at 2022-10-25T18:08:24-04:00
Enable popcount rewrite rule when cross-compiling
The comment applies only when host's word size < target's word size.
So we can relax the guard.
- - - - -
a2f53ac8 by Sylvain Henry at 2022-10-25T18:09:05-04:00
Add GHC.SysTools.Cpp module
Move doCpp out of the driver to be able to use it in the upcoming JS backend.
- - - - -
1fd7f201 by Ben Gamari at 2022-10-25T18:09:42-04:00
llvm-targets: Add datalayouts for big-endian AArch64 targets
Fixes #22311.
Thanks to @zeldin for the patch.
- - - - -
f5a486eb by Krzysztof Gogolewski at 2022-10-25T18:10:19-04:00
Cleanup String/FastString conversions
Remove unused mkPtrString and isUnderscoreFS.
We no longer use mkPtrString since 1d03d8bef96.
Remove unnecessary conversions between FastString and String and back.
- - - - -
f7bfb40c by Ryan Scott at 2022-10-26T00:01:24-04:00
Broaden the in-scope sets for liftEnvSubst and composeTCvSubst
This patch fixes two distinct (but closely related) buglets that were uncovered
in #22235:
* `liftEnvSubst` used an empty in-scope set, which was not wide enough to cover
the variables in the range of the substitution. This patch fixes this by
populating the in-scope set from the free variables in the range of the
substitution.
* `composeTCvSubst` applied the first substitution argument to the range of the
second substitution argument, but the first substitution's in-scope set was
not wide enough to cover the range of the second substutition. We similarly
fix this issue in this patch by widening the first substitution's in-scope set
before applying it.
Fixes #22235.
- - - - -
0270cc54 by Vladislav Zavialov at 2022-10-26T00:02:01-04:00
Introduce TcRnWithHsDocContext (#22346)
Before this patch, GHC used withHsDocContext to attach an HsDocContext
to an error message:
addErr $ mkTcRnUnknownMessage $ mkPlainError noHints (withHsDocContext ctxt msg)
The problem with this approach is that it only works with
TcRnUnknownMessage. But could we attach an HsDocContext to a
structured error message in a generic way? This patch solves
the problem by introducing a new constructor to TcRnMessage:
data TcRnMessage where
...
TcRnWithHsDocContext :: !HsDocContext -> !TcRnMessage -> TcRnMessage
...
- - - - -
9ab31f42 by Sylvain Henry at 2022-10-26T09:32:20+02:00
Testsuite: more precise test options
Necessary for newer cross-compiling backends (JS, Wasm) that don't
support TH yet.
- - - - -
f60a1a62 by Vladislav Zavialov at 2022-10-26T12:17:14-04:00
Use TcRnVDQInTermType in noNestedForallsContextsErr (#20115)
When faced with VDQ in the type of a term, GHC generates the following
error message:
Illegal visible, dependent quantification in the type of a term
(GHC does not yet support this)
Prior to this patch, there were two ways this message could have been
generated and represented:
1. with the dedicated constructor TcRnVDQInTermType
(see check_type in GHC.Tc.Validity)
2. with the transitional constructor TcRnUnknownMessage
(see noNestedForallsContextsErr in GHC.Rename.Utils)
Not only this led to duplication of code generating the final SDoc,
it also made it tricky to track the origin of the error message.
This patch fixes the problem by using TcRnVDQInTermType exclusively.
- - - - -
223e159d by Owen Shepherd at 2022-10-27T13:54:33-04:00
Remove source location information from interface files
This change aims to minimize source location information leaking
into interface files, which makes ABI hashes dependent on the
build location.
The `Binary (Located a)` instance has been removed completely.
It seems that the HIE interface still needs the ability to
serialize SrcSpans, but by wrapping the instances, it should
be a lot more difficult to inadvertently add source location
information.
- - - - -
22e3deb9 by Simon Peyton Jones at 2022-10-27T13:55:37-04:00
Add missing dict binds to specialiser
I had forgotten to add the auxiliary dict bindings to the
/unfolding/ of a specialised function. This caused #22358,
which reports failures when compiling Hackage packages
fixed-vector
indexed-traversable
Regression test T22357 is snarfed from indexed-traversable
- - - - -
a8ed36f9 by Evan Relf at 2022-10-27T13:56:36-04:00
Fix broken link to `async` package
- - - - -
750846cd by Zubin Duggal at 2022-10-28T00:49:22-04:00
Pass correct package db when testing stage1.
It used to pick the db for stage-2 which obviously didn't work.
- - - - -
ad612f55 by Krzysztof Gogolewski at 2022-10-28T00:50:00-04:00
Minor SDoc-related cleanup
* Rename pprCLabel to pprCLabelStyle, and use the name pprCLabel
for a function using CStyle (analogous to pprAsmLabel)
* Move LabelStyle to the CLabel module, it no longer needs to be in Outputable.
* Move calls to 'text' right next to literals, to make sure the text/str
rule is triggered.
* Remove FastString/String roundtrip in Tc.Deriv.Generate
* Introduce showSDocForUser', which abstracts over a pattern in
GHCi.UI
- - - - -
c2872f3f by Bryan Richter at 2022-10-28T11:36:34+03:00
CI: Don't run lint-submods on nightly
Fixes #22325
- - - - -
270037fa by Hécate Moonlight at 2022-10-28T19:46:12-04:00
Start the deprecation process for GHC.Pack
- - - - -
d45d8cb3 by M Farkas-Dyck at 2022-11-01T12:47:21-04:00
Drop a kludge for binutils<2.17, which is now over 10 years old.
- - - - -
8ee8b418 by Nicolas Trangez at 2022-11-01T12:47:58-04:00
rts: `name` argument of `createOSThread` can be `const`
Since we don't intend to ever change the incoming string, declare this
to be true.
Also, in the POSIX implementation, the argument is no longer `STG_UNUSED`
(since ee0deb8054da2a597fc5624469b4c44fd769ada2) in any code path.
See: https://gitlab.haskell.org/ghc/ghc/-/commit/ee0deb8054da2a597fc5624469b4c44…
- - - - -
13b5f102 by Nicolas Trangez at 2022-11-01T12:47:58-04:00
rts: fix lifetime of `start_thread`s `name` value
Since, unlike the code in ee0deb8054da2^, usage of the `name` value
passed to `createOSThread` now outlives said function's lifetime, and
could hence be released by the caller by the time the new thread runs
`start_thread`, it needs to be copied.
See: https://gitlab.haskell.org/ghc/ghc/-/commit/ee0deb8054da2a597fc5624469b4c44…
See: https://gitlab.haskell.org/ghc/ghc/-/merge_requests/9066
- - - - -
edd175c9 by Nicolas Trangez at 2022-11-01T12:47:58-04:00
rts: fix OS thread naming in ticker
Since ee0deb805, the use of `pthread_setname_np` on Darwin was fixed
when invoking `createOSThread`. However, the 'ticker' has some
thread-creation code which doesn't rely on `createOSThread`, yet also
uses `pthread_setname_np`.
This patch enforces all thread creation to go through a single
function, which uses the (correct) thread-naming code introduced in
ee0deb805.
See: https://gitlab.haskell.org/ghc/ghc/-/commit/ee0deb8054da2a597fc5624469b4c44…
See: https://gitlab.haskell.org/ghc/ghc/-/issues/22206
See: https://gitlab.haskell.org/ghc/ghc/-/merge_requests/9066
- - - - -
b7a00113 by Krzysztof Gogolewski at 2022-11-01T12:48:35-04:00
Typo: rename -fwrite-if-simplfied-core to -fwrite-if-simplified-core
- - - - -
30e625e6 by Vladislav Zavialov at 2022-11-01T12:49:10-04:00
ThToHs: fix overzealous parenthesization
Before this patch, when converting from TH.Exp to LHsExpr GhcPs,
the compiler inserted more parentheses than required:
((f a) (b + c)) d
This was happening because the LHS of the function application was
parenthesized as if it was the RHS.
Now we use funPrec and appPrec appropriately and produce sensibly
parenthesized expressions:
f a (b + c) d
I also took the opportunity to remove the special case for LamE,
which was not special at all and simply duplicated code.
- - - - -
0560821f by Simon Peyton Jones at 2022-11-01T12:49:47-04:00
Add accurate skolem info when quantifying
Ticket #22379 revealed that skolemiseQuantifiedTyVar was
dropping the passed-in skol_info on the floor when it encountered
a SkolemTv. Bad! Several TyCons thereby share a single SkolemInfo
on their binders, which lead to bogus error reports.
- - - - -
38d19668 by Fendor at 2022-11-01T12:50:25-04:00
Expose UnitEnvGraphKey for user-code
- - - - -
77e24902 by Simon Peyton Jones at 2022-11-01T12:51:00-04:00
Shrink test case for #22357
Ryan Scott offered a cut-down repro case
(60 lines instead of more than 700 lines)
- - - - -
4521f649 by Simon Peyton Jones at 2022-11-01T12:51:00-04:00
Add two tests for #17366
- - - - -
6b400d26 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: introduce (and use) `STG_NORETURN`
Instead of sprinkling the codebase with
`GNU(C3)_ATTRIBUTE(__noreturn__)`, add a `STG_NORETURN` macro (for,
basically, the same thing) similar to `STG_UNUSED` and others, and
update the code to use this macro where applicable.
- - - - -
f9638654 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: consistently use `STG_UNUSED`
- - - - -
81a58433 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: introduce (and use) `STG_USED`
Similar to `STG_UNUSED`, have a specific macro for
`__attribute__(used)`.
- - - - -
41e1f748 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: introduce (and use) `STG_MALLOC`
Instead of using `GNUC3_ATTRIBUTE(__malloc__)`, provide a `STG_MALLOC`
macro definition and use it instead.
- - - - -
3a9a8bde by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: use `STG_UNUSED`
- - - - -
9ab999de by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: specify deallocator of allocating functions
This patch adds a new `STG_MALLOC1` macro (and its counterpart
`STG_MALLOC2` for completeness) which allows to specify the deallocation
function to be used with allocations of allocating functions, and
applies it to `stg*allocBytes`.
It also fixes a case where `free` was used to free up an
`stgMallocBytes` allocation, found by the above change.
See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-ma…
See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
- - - - -
81c0c7c9 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: use `alloc_size` attribute
This patch adds the `STG_ALLOC_SIZE1` and `STG_ALLOC_SIZE2` macros which
allow to set the `alloc_size` attribute on functions, when available.
See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-al…
See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
- - - - -
99a1d896 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: add and use `STG_RETURNS_NONNULL`
See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-re…
See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
- - - - -
c235b399 by Nicolas Trangez at 2022-11-02T12:06:48-04:00
rts: tag `stgStrndup` as `STG_MALLOC`
See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
- - - - -
ed81b448 by Oleg Grenrus at 2022-11-02T12:07:27-04:00
Move Symbol implementation note out of public haddock
- - - - -
284fd39c by Ben Gamari at 2022-11-03T01:58:54-04:00
gen-dll: Drop it
Currently it is only used by the make build system, which is soon to be
retired, and it has not built since 41cf758b. We may need to reintroduce
it when dynamic-linking support is introduced on Windows, but we will
cross that bridge once we get there.
Fixes #21753.
- - - - -
24f4f54f by Matthew Pickering at 2022-11-03T01:59:30-04:00
Port foundation numeric tests to GHC testsuite
This commit ports the numeric tests which found a regression in GHC-9.4.
https://github.com/haskell-foundation/foundation/issues/571
Included in the commit is a simple random number generator and
simplified QuickCheck implementation. In future these could be factored
out of this standalone file and reused as a general purpose library
which could be used for other QuickCheck style tests in the testsuite.
See #22282
- - - - -
d51bf7bd by M Farkas-Dyck at 2022-11-03T02:00:13-04:00
git: ignore HIE files.
Cleans up git status if one sets -fwrite-ide-info in hadrian/ghci.
- - - - -
a9fc15b1 by Matthew Pickering at 2022-11-03T02:00:49-04:00
Clarify status of bindings in WholeCoreBindings
Gergo points out that these bindings are tidied, rather than prepd as
the variable claims. Therefore we update the name of the variable to
reflect reality and add a comment to the data type to try to erase any
future confusion.
Fixes #22307
- - - - -
634da448 by Andrew Lelechenko at 2022-11-03T21:25:02+00:00
Fix haddocks for GHC.IORef
- - - - -
31125154 by Andreas Klebinger at 2022-11-03T23:08:09-04:00
Export pprTrace and friends from GHC.Prelude.
Introduces GHC.Prelude.Basic which can be used in modules which are a
dependency of the ppr code.
- - - - -
bdc8cbb3 by Bryan Richter at 2022-11-04T10:27:37+02:00
CI: Allow hadrian-ghc-in-ghci to run in nightlies
Since lint-submods doesn't run in nightlies, hadrian-ghc-in-ghci needs
to mark it as "optional" so it can run if the job doesn't exist.
Fixes #22396.
- - - - -
3c0e3793 by Krzysztof Gogolewski at 2022-11-05T00:29:57-04:00
Minor refactor around FastStrings
Pass FastStrings to functions directly, to make sure the rule
for fsLit "literal" fires.
Remove SDoc indirection in GHCi.UI.Tags and GHC.Unit.Module.Graph.
- - - - -
e41b2f55 by Matthew Pickering at 2022-11-05T14:18:10+00:00
Bump unix submodule to 2.8.0.0
Also bumps process and ghc-boot bounds on unix.
For hadrian, when cross-compiling, we add -Wwarn=unused-imports
-Wwarn=unused-top-binds to validation flavour. Further fixes in unix
and/or hsc2hs is needed to make it completely free of warnings; for
the time being, this change is needed to unblock other
cross-compilation related work.
- - - - -
42938a58 by Matthew Pickering at 2022-11-05T14:18:10+00:00
Bump Win32 submodule to 2.13.4.0
Fixes #22098
- - - - -
e7372bc5 by Cheng Shao at 2022-11-06T13:15:22+00:00
Bump ci-images revision
ci-images has recently been updated, including changes needed for wasm32-wasi CI.
- - - - -
88cb9492 by Cheng Shao at 2022-11-06T13:15:22+00:00
Bump gmp-tarballs submodule
Includes a fix for wasm support, doesn't impact other targets.
- - - - -
69427ce9 by Cheng Shao at 2022-11-06T13:15:22+00:00
Bump haskeline submodule
Includes a fix for wasm support, doesn't impact other targets.
- - - - -
5fe11fe6 by Carter Schonwald at 2022-11-07T13:22:14-05:00
bump llvm upper bound
- - - - -
68f49874 by M Farkas-Dyck at 2022-11-08T12:53:55-05:00
Define `Infinite` list and use where appropriate.
Also add perf test for infinite list fusion.
In particular, in `GHC.Core`, often we deal with infinite lists of roles. Also in a few locations we deal with infinite lists of names.
Thanks to simonpj for helping to write the Note [Fusion for `Infinite` lists].
- - - - -
ce726cd2 by Ross Paterson at 2022-11-08T12:54:34-05:00
Fix TypeData issues (fixes #22315 and #22332)
There were two bugs here:
1. Treating type-level constructors as PromotedDataCon doesn't always
work, in particular because constructors promoted via DataKinds are
called both T and 'T. (Tests T22332a, T22332b, T22315a, T22315b)
Fix: guard these cases with isDataKindsPromotedDataCon.
2. Type-level constructors were sent to the code generator, producing
things like constructor wrappers. (Tests T22332a, T22332b)
Fix: test for them in isDataTyCon.
Other changes:
* changed the marking of "type data" DataCon's as suggested by SPJ.
* added a test TDGADT for a type-level GADT.
* comment tweaks
* change tcIfaceTyCon to ignore IfaceTyConInfo, so that IfaceTyConInfo
is used only for pretty printing, not for typechecking. (SPJ)
- - - - -
132f8908 by Jade Lovelace at 2022-11-08T12:55:18-05:00
Clarify msum/asum documentation
- - - - -
bb5888c5 by Jade Lovelace at 2022-11-08T12:55:18-05:00
Add example for (<$)
- - - - -
080fffa1 by Jade Lovelace at 2022-11-08T12:55:18-05:00
Document what Alternative/MonadPlus instances actually do
- - - - -
92ccb8de by Giles Anderson at 2022-11-09T09:27:52-05:00
Use TcRnDiagnostic in GHC.Tc.TyCl.Instance (#20117)
The following `TcRnDiagnostic` messages have been introduced:
TcRnWarnUnsatisfiedMinimalDefinition
TcRnMisplacedInstSig
TcRnBadBootFamInstDeclErr
TcRnIllegalFamilyInstance
TcRnAssocInClassErr
TcRnBadFamInstDecl
TcRnNotOpenFamily
- - - - -
90c5abd4 by Hécate Moonlight at 2022-11-09T09:28:30-05:00
GHCi tags generation phase 2
see #19884
- - - - -
abd2d803 by Simon Peyton Jones at 2022-11-10T17:37:15+00:00
Try doing case-of-case in InitialPhase
- - - - -
4373 changed files:
- − .appveyor.sh
- .editorconfig
- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/darwin/toolchain.nix
- .gitlab/gen_ci.hs
- .gitlab/jobs.yaml
- + .gitlab/upload_ghc_libs.py
- CODEOWNERS
- − MAKEHELP.md
- − Makefile
- README.md
- − appveyor.yml
- − bindisttest/ghc.mk
- boot
- compiler/.hlint.yaml
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/PrimOps/Ids.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types.hs-boot
- compiler/GHC/Builtin/Types/Prim.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/BlockId.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CLabel.hs-boot
- compiler/GHC/Cmm/CallConv.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/ContFlowOpt.hs
- compiler/GHC/Cmm/Dataflow.hs
- compiler/GHC/Cmm/Dataflow/Graph.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/DebugBlock.hs
- + compiler/GHC/Cmm/Dominators.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/Liveness.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Parser.y
- + compiler/GHC/Cmm/Parser/Config.hs
- compiler/GHC/Cmm/Parser/Monad.hs
- compiler/GHC/Cmm/Pipeline.hs
- − compiler/GHC/Cmm/Ppr.hs
- − compiler/GHC/Cmm/Ppr/Decl.hs
- − compiler/GHC/Cmm/Ppr/Expr.hs
- compiler/GHC/Cmm/ProcPoint.hs
- + compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/Cmm/Switch.hs
- compiler/GHC/Cmm/Type.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/AArch64/Regs.hs
- compiler/GHC/CmmToAsm/BlockLayout.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/CFG/Dominators.hs
- compiler/GHC/CmmToAsm/CPrim.hs
- compiler/GHC/CmmToAsm/Dwarf.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/Monad.hs
- compiler/GHC/CmmToAsm/PIC.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Instr.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/PPC/Regs.hs
- compiler/GHC/CmmToAsm/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Graph.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Base.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/AArch64.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToAsm/X86/Regs.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Config.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/CmmToLlvm/Ppr.hs
- compiler/GHC/Core.hs
- + compiler/GHC/Core.hs-boot
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion/Axiom.hs
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/DataCon.hs-boot
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/FamInstEnv.hs
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/LateCC.hs
- compiler/GHC/Core/Lint.hs
- + compiler/GHC/Core/Lint/Interactive.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Map/Expr.hs
- compiler/GHC/Core/Map/Type.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CSE.hs
- compiler/GHC/Core/Opt/CallArity.hs
- compiler/GHC/Core/Opt/CallerCC.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Exitify.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/FloatOut.hs
- compiler/GHC/Core/Opt/LiberateCase.hs
- compiler/GHC/Core/Opt/Monad.hs
- − compiler/GHC/Core/Opt/Monad.hs-boot
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- + compiler/GHC/Core/Opt/Pipeline/Types.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- + compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Monad.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- + compiler/GHC/Core/Opt/Stats.hs
- compiler/GHC/Core/Opt/WorkWrap.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Opt/simplifier.tib
- compiler/GHC/Core/PatSyn.hs
- compiler/GHC/Core/Ppr.hs
- + compiler/GHC/Core/Ppr.hs-boot
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Reduction.hs
- compiler/GHC/Core/RoughMap.hs
- compiler/GHC/Core/Rules.hs
- + compiler/GHC/Core/Rules/Config.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/Tidy.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Rep.hs-boot
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Type.hs-boot
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/Bag.hs
- compiler/GHC/Data/Bool.hs
- compiler/GHC/Data/BooleanFormula.hs
- compiler/GHC/Data/FastMutInt.hs
- compiler/GHC/Data/FastString.hs
- compiler/GHC/Data/Graph/Color.hs
- compiler/GHC/Data/Graph/Ops.hs
- compiler/GHC/Data/Graph/UnVar.hs
- + compiler/GHC/Data/List/Infinite.hs
- compiler/GHC/Data/List/SetOps.hs
- compiler/GHC/Data/Maybe.hs
- compiler/GHC/Data/OrdList.hs
- compiler/GHC/Data/Pair.hs
- compiler/GHC/Data/Stream.hs
- compiler/GHC/Data/StringBuffer.hs
- compiler/GHC/Data/TrieMap.hs
- + compiler/GHC/Data/Unboxed.hs
- compiler/GHC/Driver/Backend.hs
- + compiler/GHC/Driver/Backend/Internal.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/Backpack/Syntax.hs
- compiler/GHC/Driver/CmdLine.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config.hs
- compiler/GHC/Driver/Config/Cmm.hs
- + compiler/GHC/Driver/Config/Cmm/Parser.hs
- compiler/GHC/Driver/Config/CmmToAsm.hs
- compiler/GHC/Driver/Config/CmmToLlvm.hs
- + compiler/GHC/Driver/Config/Core/Lint.hs
- + compiler/GHC/Driver/Config/Core/Lint/Interactive.hs
- + compiler/GHC/Driver/Config/Core/Opt/Arity.hs
- + compiler/GHC/Driver/Config/Core/Opt/LiberateCase.hs
- + compiler/GHC/Driver/Config/Core/Opt/Simplify.hs
- + compiler/GHC/Driver/Config/Core/Opt/WorkWrap.hs
- + compiler/GHC/Driver/Config/Core/Rules.hs
- + compiler/GHC/Driver/Config/CoreToStg.hs
- + compiler/GHC/Driver/Config/CoreToStg/Prep.hs
- compiler/GHC/Driver/Config/Diagnostic.hs
- + compiler/GHC/Driver/Config/HsToCore/Ticks.hs
- + compiler/GHC/Driver/Config/HsToCore/Usage.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/Config/Tidy.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/KnotVars.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/GenerateCgIPEStub.hs
- compiler/GHC/Driver/Hooks.hs
- + compiler/GHC/Driver/LlvmConfigCache.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Driver/Monad.hs
- compiler/GHC/Driver/Phases.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline.hs-boot
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Pipeline/Monad.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
- compiler/GHC/Driver/Plugins.hs
- + compiler/GHC/Driver/Plugins/External.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Doc.hs
- compiler/GHC/Hs/DocString.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Expr.hs-boot
- compiler/GHC/Hs/Extension.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Stats.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Binds.hs
- + compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Coverage.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Expr.hs
- + compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/Decl.hs
- + compiler/GHC/HsToCore/Foreign/Prim.hs
- + compiler/GHC/HsToCore/Foreign/Utils.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match/Constructor.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Ppr.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- + compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/HsToCore/Utils.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Binary.hs
- compiler/GHC/Iface/Ext/Types.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Binary.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Tidy/StaticPtrTable.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Linker/Dynamic.hs
- compiler/GHC/Linker/ExtraObj.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/MacOS.hs
- compiler/GHC/Linker/Static.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Linker/Unit.hs
- compiler/GHC/Linker/Windows.hs
- compiler/GHC/Llvm/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/HaddockLex.x
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- compiler/GHC/Parser/Types.hs
- compiler/GHC/Platform.hs
- compiler/GHC/Platform/Ways.hs
- compiler/GHC/Plugins.hs
- compiler/GHC/Prelude.hs
- + compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Fixity.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Splice.hs-boot
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Context.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/CSE.hs
- compiler/GHC/Stg/Debug.hs
- compiler/GHC/Stg/InferTags.hs
- compiler/GHC/Stg/InferTags/Rewrite.hs
- compiler/GHC/Stg/InferTags/TagSig.hs
- compiler/GHC/Stg/Lift/Monad.hs
- compiler/GHC/Stg/Lint.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/Stg/Subst.hs
- compiler/GHC/Stg/Syntax.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/Closure.hs
- compiler/GHC/StgToCmm/Config.hs
- compiler/GHC/StgToCmm/Env.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/Heap.hs
- + compiler/GHC/StgToCmm/InfoTableProv.hs
- compiler/GHC/StgToCmm/Layout.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Monad.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/Prof.hs
- compiler/GHC/StgToCmm/Sequel.hs
- compiler/GHC/StgToCmm/TagCheck.hs
- compiler/GHC/StgToCmm/Ticky.hs
- compiler/GHC/StgToCmm/Types.hs
- compiler/GHC/StgToCmm/Utils.hs
- compiler/GHC/SysTools.hs
- compiler/GHC/SysTools/Ar.hs
- compiler/GHC/SysTools/BaseDir.hs
- + compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/SysTools/Elf.hs
- compiler/GHC/SysTools/Process.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Functor.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Deriv/Infer.hs
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- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/Annotation.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
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- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Rule.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
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- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Canonical.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Interact.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Rewrite.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Class.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs-boot
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- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Utils/Zonk.hs
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Avail.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/CostCentre.hs
- compiler/GHC/Types/Cpr.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error.hs
- + compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/FieldLabel.hs
- compiler/GHC/Types/ForeignCall.hs
- compiler/GHC/Types/ForeignStubs.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Id.hs
- compiler/GHC/Types/Id/Info.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Literal.hs
- compiler/GHC/Types/Name.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Name/Env.hs
- compiler/GHC/Types/Name/Occurrence.hs
- compiler/GHC/Types/Name/Occurrence.hs-boot
- compiler/GHC/Types/Name/Ppr.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/Name/Set.hs
- + compiler/GHC/Types/ProfAuto.hs
- compiler/GHC/Types/RepType.hs
- compiler/GHC/Types/SafeHaskell.hs
- compiler/GHC/Types/SourceError.hs
- compiler/GHC/Types/SrcLoc.hs
- compiler/GHC/Types/TyThing.hs
- compiler/GHC/Types/TyThing/Ppr.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Types/Unique/DFM.hs
- compiler/GHC/Types/Unique/Supply.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Types/Var/Env.hs
- compiler/GHC/Unit.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/External.hs
- compiler/GHC/Unit/Home.hs
- compiler/GHC/Unit/Home/ModInfo.hs
- compiler/GHC/Unit/Module.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/Env.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/ModIface.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- − compiler/GHC/Unit/Module/Name.hs-boot
- compiler/GHC/Unit/Module/Status.hs
- compiler/GHC/Unit/Module/Warnings.hs
- + compiler/GHC/Unit/Module/WholeCoreBindings.hs
- compiler/GHC/Unit/Parser.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Unit/Types.hs
- compiler/GHC/Unit/Types.hs-boot
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/BufHandle.hs
- compiler/GHC/Utils/Constants.hs
- compiler/GHC/Utils/Error.hs
- compiler/GHC/Utils/Exception.hs
- compiler/GHC/Utils/Fingerprint.hs
- compiler/GHC/Utils/GlobalVars.hs
- compiler/GHC/Utils/IO/Unsafe.hs
- compiler/GHC/Utils/Json.hs
- compiler/GHC/Utils/Lexeme.hs
- compiler/GHC/Utils/Logger.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Monad.hs
- − compiler/GHC/Utils/Monad/State/Lazy.hs
- compiler/GHC/Utils/Outputable.hs
- − compiler/GHC/Utils/Outputable.hs-boot
- compiler/GHC/Utils/Panic.hs
- compiler/GHC/Utils/Panic/Plain.hs
- compiler/GHC/Utils/Ppr.hs
- compiler/GHC/Utils/Ppr/Colour.hs
- compiler/GHC/Utils/Trace.hs
- compiler/Language/Haskell/Syntax.hs
- + compiler/Language/Haskell/Syntax/Basic.hs
- compiler/Language/Haskell/Syntax/Binds.hs
- + compiler/Language/Haskell/Syntax/Concrete.hs
- compiler/Language/Haskell/Syntax/Decls.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Expr.hs-boot
- compiler/Language/Haskell/Syntax/Extension.hs
- + compiler/Language/Haskell/Syntax/ImpExp.hs
- + compiler/Language/Haskell/Syntax/ImpExp.hs-boot
- compiler/Language/Haskell/Syntax/Lit.hs
- compiler/GHC/Unit/Module/Name.hs → compiler/Language/Haskell/Syntax/Module/Name.hs
- compiler/Language/Haskell/Syntax/Pat.hs
- compiler/Language/Haskell/Syntax/Type.hs
- + compiler/Language/Haskell/Syntax/Type.hs-boot
- − compiler/Makefile
- compiler/Setup.hs
- compiler/ghc.cabal.in
- − compiler/ghc.mk
- config.guess
- config.sub
- configure.ac
- distrib/INSTALL
- distrib/README
- distrib/configure.ac.in
- − distrib/hc-build
- distrib/mkDocs/mkDocs
- docs/index.html.in → docs/index.html
- docs/users_guide/9.6.1-notes.rst
- docs/users_guide/bugs.rst
- docs/users_guide/codegens.rst
- docs/users_guide/conf.py
- docs/users_guide/debugging.rst
- docs/users_guide/extending_ghc.rst
- docs/users_guide/exts/applicative_do.rst
- docs/users_guide/exts/binary_literals.rst
- docs/users_guide/exts/constrained_class_methods.rst
- docs/users_guide/exts/constraint_kind.rst
- docs/users_guide/exts/data_kinds.rst
- docs/users_guide/exts/datatype_contexts.rst
- docs/users_guide/exts/default_signatures.rst
- docs/users_guide/exts/deriving_extra.rst
- docs/users_guide/exts/duplicate_record_fields.rst
- docs/users_guide/exts/empty_case.rst
- docs/users_guide/exts/empty_data_deriving.rst
- docs/users_guide/exts/existential_quantification.rst
- docs/users_guide/exts/explicit_forall.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/ffi.rst
- docs/users_guide/exts/field_selectors.rst
- docs/users_guide/exts/flexible_contexts.rst
- docs/users_guide/exts/functional_dependencies.rst
- docs/users_guide/exts/gadt_syntax.rst
- docs/users_guide/exts/generics.rst
- docs/users_guide/exts/hasfield.rst
- docs/users_guide/exts/hex_float_literals.rst
- docs/users_guide/exts/import_qualified_post.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/exts/kind_signatures.rst
- docs/users_guide/exts/lambda_case.rst
- docs/users_guide/exts/let_generalisation.rst
- docs/users_guide/exts/linear_types.rst
- docs/users_guide/exts/multi_param_type_classes.rst
- docs/users_guide/exts/newtype_deriving.rst
- docs/users_guide/exts/nk_patterns.rst
- docs/users_guide/exts/nullary_type_classes.rst
- docs/users_guide/exts/nullary_types.rst
- docs/users_guide/exts/numeric_underscores.rst
- docs/users_guide/exts/package_qualified_imports.rst
- docs/users_guide/exts/partial_type_signatures.rst
- docs/users_guide/exts/pattern_guards.rst
- docs/users_guide/exts/pattern_synonyms.rst
- docs/users_guide/exts/poly_kinds.rst
- docs/users_guide/exts/primitives.rst
- docs/users_guide/exts/qualified_do.rst
- docs/users_guide/exts/rank_polymorphism.rst
- docs/users_guide/exts/rebindable_syntax.rst
- docs/users_guide/exts/record_field_resolution.rst
- docs/users_guide/exts/record_puns.rst
- docs/users_guide/exts/record_wildcards.rst
- docs/users_guide/exts/rewrite_rules.rst
- docs/users_guide/exts/scoped_type_variables.rst
- docs/users_guide/exts/standalone_deriving.rst
- docs/users_guide/exts/strict.rst
- docs/users_guide/exts/template_haskell.rst
- docs/users_guide/exts/tuple_sections.rst
- docs/users_guide/exts/type_applications.rst
- + docs/users_guide/exts/type_data.rst
- docs/users_guide/exts/type_families.rst
- docs/users_guide/exts/type_operators.rst
- docs/users_guide/exts/types.rst
- − docs/users_guide/ghc.mk
- docs/users_guide/ghc_config.py.in
- docs/users_guide/ghci.rst
- docs/users_guide/packages.rst
- docs/users_guide/phases.rst
- docs/users_guide/profiling.rst
- docs/users_guide/runghc.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/using.rst
- − driver/ghc.mk
- − driver/ghc/ghc.mk
- − driver/ghci/ghc.mk
- driver/ghci/ghci-wrapper.cabal.in
- driver/ghci/ghci.c
- − driver/haddock/ghc.mk
- − ghc.mk
- ghc/GHCi/Leak.hs
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Info.hs
- ghc/GHCi/UI/Monad.hs
- ghc/GHCi/UI/Tags.hs
- ghc/Main.hs
- ghc/ghc-bin.cabal.in
- − ghc/ghc.mk
- hadrian/.gitignore
- hadrian/README.md
- hadrian/bindist/Makefile
- mk/install.mk.in → hadrian/bindist/config.mk.in
- hadrian/bindist/cwrappers/version-wrapper.c
- hadrian/bootstrap/README.md
- hadrian/bootstrap/bootstrap.py
- + hadrian/bootstrap/plan-9_0_2.json
- + hadrian/bootstrap/plan-9_2_3.json
- + hadrian/bootstrap/plan-bootstrap-9_0_2.json
- + hadrian/bootstrap/plan-bootstrap-9_2_3.json
- hadrian/cabal.project
- hadrian/cfg/system.config.in
- hadrian/doc/flavours.md
- hadrian/doc/user-settings.md
- hadrian/ghci-cabal.in
- + hadrian/ghci-multi
- + hadrian/ghci-multi-cabal.in
- hadrian/ghci-stack.in
- hadrian/hadrian.cabal
- hadrian/hie-bios
- hadrian/hie-bios.bat
- hadrian/src/Base.hs
- hadrian/src/Builder.hs
- hadrian/src/CommandLine.hs
- hadrian/src/Context.hs
- hadrian/src/Context/Type.hs
- hadrian/src/Expression.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/BuildPath.hs
- hadrian/src/Hadrian/Builder.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Main.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/ModuleFiles.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Clean.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Dependencies.hs
- hadrian/src/Rules/Documentation.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Libffi.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Lint.hs
- hadrian/src/Rules/Nofib.hs
- hadrian/src/Rules/Program.hs
- hadrian/src/Rules/Register.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Rules/Selftest.hs
- hadrian/src/Rules/SimpleTargets.hs
- hadrian/src/Rules/SourceDist.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Rules/ToolArgs.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Ar.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Common.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/GhcPkg.hs
- hadrian/src/Settings/Builders/Haddock.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/Make.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Development.hs
- + hadrian/src/Settings/Flavours/Release.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Program.hs
- hadrian/src/Stage.hs
- hadrian/src/Utilities.hs
- hadrian/stack.yaml
- hadrian/stack.yaml.lock
- − libffi/ghc.mk
- libraries/Cabal
- libraries/Win32
- libraries/array
- libraries/base/Control/Exception/Base.hs
- libraries/base/Control/Monad/Fail.hs
- libraries/base/Control/Monad/Fix.hs
- libraries/base/Control/Monad/Zip.hs
- libraries/base/Data/Array/Byte.hs
- + libraries/base/Data/Bifoldable1.hs
- libraries/base/Data/Char.hs
- libraries/base/Data/Complex.hs
- libraries/base/Data/Data.hs
- libraries/base/Data/Foldable.hs
- + libraries/base/Data/Foldable1.hs
- libraries/base/Data/Function.hs
- libraries/base/Data/Functor/Classes.hs
- libraries/base/Data/Functor/Compose.hs
- libraries/base/Data/Functor/Product.hs
- libraries/base/Data/Functor/Sum.hs
- libraries/base/Data/Functor/Utils.hs
- libraries/base/Data/List.hs
- libraries/base/Data/List/NonEmpty.hs
- libraries/base/Data/OldList.hs
- libraries/base/Data/Ord.hs
- libraries/base/Data/Semigroup.hs
- libraries/base/Data/Semigroup/Internal.hs
- libraries/base/Data/Traversable.hs
- libraries/base/Data/Typeable/Internal.hs
- libraries/base/Foreign/C/String.hs
- libraries/base/Foreign/Marshal/Array.hs
- libraries/base/GHC/Base.hs
- + libraries/base/GHC/ByteOrder.hs-boot
- libraries/base/GHC/Conc.hs
- libraries/base/GHC/Conc/IO.hs
- libraries/base/GHC/Conc/POSIX.hs
- libraries/base/GHC/Conc/Sync.hs
- libraries/base/GHC/Conc/Sync.hs-boot
- libraries/base/GHC/Conc/Windows.hs
- + libraries/base/GHC/Encoding/UTF8.hs
- libraries/base/GHC/Enum.hs
- libraries/base/GHC/Event/Thread.hs
- libraries/base/GHC/Event/TimerManager.hs
- libraries/base/GHC/Event/Windows.hsc
- libraries/base/GHC/Event/Windows/FFI.hsc
- libraries/base/GHC/Event/Windows/Thread.hs
- libraries/base/GHC/Exception.hs
- libraries/base/GHC/Exts.hs
- libraries/base/GHC/Float.hs
- libraries/base/GHC/Foreign.hs
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- utils/check-exact/Parsers.hs
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- utils/hpc/HpcOverlay.hs
- utils/hpc/HpcReport.hs
- utils/hpc/HpcShowTix.hs
- utils/hpc/Main.hs
- − utils/hpc/ghc.mk
- utils/hpc/hpc-bin.cabal
- utils/hsc2hs
- − utils/iserv/ghc.mk
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- utils/runghc/runghc.cabal.in
- − utils/testremove/ghc.mk
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- validate
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[Git][ghc/ghc][wip/T27484] 23 commits: hadrian: binary-dist-dir should not be the default target
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T27484 at Glasgow Haskell Compiler / GHC
Commits:
2ecabb4f by Zubin Duggal at 2026-07-09T09:23:25-04:00
hadrian: binary-dist-dir should not be the default target
Revert behaviour to pre 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2
In 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2, we applied the following behaviour change:
```
hadrian: Build stage 2 cross compilers
...
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
```
This is a major regression to development experience, a plain hadrian/build
--freeze1 now takes ages because we rebuild all docs (which need to go in the
binary dist dir).
`binary-dist-dir` is the wrong default target for regular GHC development work
Fixes #27445
- - - - -
e16388e3 by Zubin Duggal at 2026-07-09T09:23:25-04:00
.gitignore: Add the hadrian system.config introduced by commit 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2
Since
commit 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2
Author: Matthew Pickering <matthewtpickering(a)gmail.com>
Date: Thu Dec 21 16:17:41 2023 +0000
hadrian: Build stage 2 cross compilers
./configure produces /hadrian/cfg/system.config.{host,target}
Add these to .gitignore
- - - - -
7e8abf41 by Alan Zimmerman at 2026-07-09T09:24:12-04:00
EPA: Replace AnnListItem with simply [TrailingAnn]
Remove the unnecessary wrapper around a single field.
- - - - -
29032f17 by Zubin Duggal at 2026-07-09T09:24:58-04:00
testsuite: Keep real reason for fragile test failures
- - - - -
c34e03a7 by Zubin Duggal at 2026-07-09T09:24:58-04:00
testsuite: Fall back to the failure reason for empty JUnit bodies
- - - - -
409d40f0 by Zubin Duggal at 2026-07-09T09:24:58-04:00
testsuite: Show output diffs in JUnit output
Also refactor compare_outputs to return essentially a `Maybe Diff`
(`CompareOutput`) instead of a bool, but more pythonic. This
allows us to pass the diff through nice.
- - - - -
06fee1ab by Zubin Duggal at 2026-07-09T09:24:58-04:00
perf notes: include stat deviation and acceptance window in notes so they show up in gitlab
- - - - -
57c0f32c by mangoiv at 2026-07-10T11:08:38-04:00
driver: enable -finter-module-far-jumps by default
this fixes a compatibility bug with certain binutils/gcc versions where
we were seeing jump offset overflow errors.
This commit can probably reverted if we stop supporting the problematic
binutils/gcc verions (2.44 and 14.2, respectively)
Reolves #26994
- - - - -
4396a6f2 by Andrea Vezzosi at 2026-07-10T11:09:25-04:00
[Fix #27287] preserve ModBreaks in ModIface
- - - - -
ed261a7e by Cheng Shao at 2026-07-14T17:59:38-04:00
hadrian: fix HLS support
This patch fixes hadrian's HLS support so one can rely on HLS when
working on the hadrian codebase. Fixes #27480.
Not building/linking shared libraries for hadrian is a severely
premature optimization; this top-level setting in `cabal.project` only
affects home packages while the dependencies in the cabal store are
built with vanilla/dynamic anyway, and even adding dynamic builds to
home packages would not be costly due to cabal's usage of
`-dynamic-too`.
- - - - -
eee8ec5b by Cheng Shao at 2026-07-14T18:00:20-04:00
compiler: fix miscompiled %load_relaxed, add missing %store_relaxed
This patch fixes the %load_relaxed cmm primop compilation logic to
correctly use relaxed memory ordering, and adds the missing
%store_relaxed primop. Parsing logic of %load/%store with explicit
ordering is covered in the AtomicFetch test case. Fixes #27483.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
1718230f by Alan Zimmerman at 2026-07-14T18:01:06-04:00
EPA: Keep binds and sigs together in HsValBindsLR
We combine them into a single list for GhcPs, wrapped in the
ValBind data type, which is the bind equivalent of ValD, having
constructors for binds and sigs.
This simplifies exact print processing, especially when using it to
update the contents of local binds, as we no longer need AnnSortKey
BindTag
- - - - -
6bd1ad2a by Andreas Klebinger at 2026-07-14T18:01:49-04:00
Bump nofib submodule to account for MonoLocalBinds.
New versions of GHC enable MonoLocalBinds by default.
This breaks some of the benchmarks. I've fixed this and
this bump pulls in that fix.
- - - - -
7eb0f1c9 by Cheng Shao at 2026-07-14T18:02:31-04:00
testsuite: fix bytecodeIPE test under +ipe flavours
This patch fixes the bytecodeIPE test under +ipe flavours. It used to
fail under +ipe because the RTS is built with IPE info, then
stg_AP_info in RTS carries IPE info, so whereFrom wouldn't return
Nothing. Now the test checks IPE info of a datacon in the ghci-loaded
module which is not affected by whether the RTS is built with IPE info
or not. Fixes #27498.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
ef038aae by cydparser at 2026-07-15T04:35:41-04:00
Reduce bytes allocated for `capabilities` in RTS (fixes #27487)
In rts/Capability.c, `capabilities` is an array of pointers, but it was allocated as if it were an
array of Capability's.
- - - - -
d377e83e by Cheng Shao at 2026-07-15T04:36:27-04:00
rts: fix missing UNTAG in stg_readTVarIOzh
This patch fixes missing UNTAG on the current value closure read from
StgTVar. UNTAG is a no-op when it's stg_TREC_HEADER_info which is word
aligned; it may be a tagged closure, and reading info table from the
tagged address is an unaligned load which may cause issues on
platforms with strict alignment requirements.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
8ed03842 by Cheng Shao at 2026-07-15T04:36:27-04:00
rts: fix missing UNTAG in stg_control0zh_ll
This patch fixes missing UNTAG on the cont closure returned by
captureContinuationAndAbort. In case it's not NULL,
captureContinuationAndAbort returns a tagged StgContinuation closure,
in which case it must be untagged before accessing the
apply_mask_frame field.
In the past it worked out of luck: when apply_mask_frame was NULL then
mask_frame_offset is also 0 so the control flow didn't diverge to a
wrong path. Still, this is horribly wrong and will crash once
StgContinuation struct is refactored and fields are shuffled around.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
5aa7000a by Cheng Shao at 2026-07-15T04:37:08-04:00
compiler: fix redundant AP thunk codegen when not using -ticky-ap-thunk
This patch fixes a double negation confusion in !7525 that results in
some redundant AP thunk code generation when not using
-ticky-ap-thunk. Now, we use `stgToCmmUseStdApThunk` to indicate
whether precomputed AP thunks in the RTS should be used, which
defaults to `True`, unless `-ticky-ap-thunk` is passed.
`-finfo-table-map` now also implies `-ticky-ap-thunk`, since when
doing IPE profiling we want the generated AP thunks to be unique.
Fixes #27502.
-------------------------
Metric Decrease:
T3064
-------------------------
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
d43a7b7a by Brian McKenna at 2026-07-15T20:10:04+02:00
Strip ticks when desugaring bool guards
The special `considerAccessible` pattern was broken when compiling
with debug info. Compiling with debug info wraps expressions with
`SourceNote` ticks, which broke the internals of the
`desugarBoolGuard` function. Ticks are now ignored within this
function.
Fixes #27360
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ede4b17b by Ben Gamari at 2026-07-15T22:59:53-04:00
base: Display ExceptionContext in WhileHandling's textual description
As originally-implemented the implementation for
`WhileHandling(displayExceptionAnnotation)` would display the
`ExceptionContext` of the exception which it carries (as this was the
behavior of `displayException`, in terms of which
`displayExceptionAnnotation` was implemented).
However, in 284ffab3 the definition of `SomeException(displayException)`
was changed to exclude the `ExceptionContext`. This means that
`WhileHandling(displayExceptionAnnotation)` fails to describe the
provenance of the exception which it captures, greatly limiting its
utility.
Return the implementation to its originally-specified behavior by
implementing `WhileHandling(displayExceptionAnnotation)` in terms of
`displayExceptionWithInfo`.
Fixes #27456.
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ddfb1f7d by Simon Peyton Jones at 2026-07-16T14:45:33+01:00
Be more eager about inlining into the body of a lambda
Addresses #27484
Needs documentation and repro
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db320132 by Simon Peyton Jones at 2026-07-16T14:45:33+01:00
Wibble unused variables
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085b758c by Simon Peyton Jones at 2026-07-16T14:45:33+01:00
Wibble
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121 changed files:
- .gitignore
- + changelog.d/T27360
- + changelog.d/T27456
- + changelog.d/fix-cmm-atomic-load-store
- + changelog.d/fix-use-std-ap-thunk
- + changelog.d/inter-module-far-jumps-aarch64-default
- compiler/GHC/ByteCode/Breakpoints.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Core.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main/Compile.hs
- compiler/GHC/Driver/Main/Hsc.hs
- compiler/GHC/Driver/Main/Passes.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- + compiler/GHC/HsToCore/Breakpoints/Types.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Platform/Ways.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/Config.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Unit/Module/ModGuts.hs
- compiler/GHC/Unit/Module/ModIface.hs
- compiler/GHC/Unit/Module/WholeCoreBindings.hs
- compiler/GHC/Utils/Binary.hs
- compiler/Language/Haskell/Syntax/Binds.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/ghc.cabal.in
- docs/users_guide/using-optimisation.rst
- ghc/GHCi/UI.hs
- hadrian/cabal.project
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- libraries/base/changelog.md
- libraries/base/tests/T15349.stderr
- libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs
- libraries/ghc-internal/tests/backtraces/T14532b.stdout
- nofib
- rts/Capability.c
- rts/ContinuationOps.cmm
- rts/PrimOps.cmm
- testsuite/driver/junit.py
- testsuite/driver/perf_notes.py
- testsuite/driver/testglobals.py
- testsuite/driver/testlib.py
- testsuite/driver/testutil.py
- testsuite/tests/cmm/should_run/AtomicFetch.hs
- testsuite/tests/cmm/should_run/AtomicFetch_cmm.cmm
- testsuite/tests/codeGen/should_run/cgrun025.stderr
- testsuite/tests/count-deps/CountDepsParser.stdout
- testsuite/tests/exceptions/T26759.stderr
- testsuite/tests/ghc-api/T25121_status.stdout
- testsuite/tests/ghc-api/exactprint/T22919.stderr
- testsuite/tests/ghc-api/exactprint/Test20239.stderr
- testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr
- testsuite/tests/ghc-e/should_fail/T18441fail7.stderr
- testsuite/tests/ghci/scripts/bytecodeIPE.hs
- testsuite/tests/ghci/should_run/Makefile
- + testsuite/tests/ghci/should_run/T27287.hs
- + testsuite/tests/ghci/should_run/T27287.stdout
- testsuite/tests/ghci/should_run/all.T
- testsuite/tests/haddock/should_compile_flag_haddock/T17544.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T24221.stderr
- testsuite/tests/mdo/should_fail/mdofail006.stderr
- testsuite/tests/module/mod185.stderr
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/DumpSemis.stderr
- testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/T14189.stderr
- testsuite/tests/parser/should_compile/T15323.stderr
- testsuite/tests/parser/should_compile/T20452.stderr
- testsuite/tests/parser/should_compile/T20718.stderr
- testsuite/tests/parser/should_compile/T20718b.stderr
- testsuite/tests/parser/should_compile/T20846.stderr
- testsuite/tests/parser/should_compile/T23315/T23315.stderr
- + testsuite/tests/pmcheck/should_compile/T27360.hs
- testsuite/tests/pmcheck/should_compile/all.T
- testsuite/tests/printer/AnnotationNoListTuplePuns.stdout
- testsuite/tests/printer/T18791.stderr
- testsuite/tests/printer/Test20297.stdout
- testsuite/tests/printer/Test24533.stdout
- testsuite/tests/runghc/T7859.stderr-mingw32
- testsuite/tests/typecheck/should_compile/T15242.stderr
- testsuite/tests/typecheck/should_compile/all.T
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Utils.hs
The diff was not included because it is too large.
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[Git][ghc/ghc][wip/T20264] 183 commits: Correct `hIsReadable` and `hIsWritable` for duplex handles
by Simon Peyton Jones (＠simonpj) 10 Aug '26
by Simon Peyton Jones (＠simonpj) 10 Aug '26
10 Aug '26
Simon Peyton Jones pushed to branch wip/T20264 at Glasgow Haskell Compiler / GHC
Commits:
598db847 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00
Correct `hIsReadable` and `hIsWritable` for duplex handles
This contribution implements CLC proposal #371. It changes `hIsReadable`
and `hIsWritable` such that they always throw a respective exception
when encountering a closed or semi-closed handle, not just in the case
of a file handle.
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b90201e5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00
Document `SemiClosedHandle`
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c9df72b5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00
Tell users what “semi-closed” means for duplex handles
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a8aa1868 by Ilias Tsitsimpis at 2026-03-06T06:26:29-05:00
Fix determinism of linker arguments
The switch from Data.Map to UniqMap in 3b5be05ac29 introduced
non-determinism in the order of packages passed to the linker.
This resulted in non-reproducible builds where the DT_NEEDED entries in
dynamic libraries were ordered differently across builds.
Fix the regression by explicitly sorting the package list derived from
UniqMap.
Fixes #26838
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9b64ad3a by Matthew Pickering at 2026-03-06T06:27:16-05:00
determinism: Use a deterministic renaming when writing bytecode files
Now when writing the bytecode file, a counter and substitution are used
to provide deterministic keys to local variables (rather than relying on
uniques). This change ensures that `.gbc` are produced
deterministically.
Fixes #26499
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d29800e0 by Teo Camarasu at 2026-03-06T06:28:46-05:00
ghc-internal: delete Version hs-boot loop
Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module.
Resolves #26940
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ad25af90 by Sylvain Henry at 2026-03-06T06:30:33-05:00
Linker: implement support for COMMON symbols (#6107)
Add some support for COMMON symbols. We don't support common symbols
having different sizes where the larger one is allocated after the
smaller one. The linker will fail with an appropriate error message if
it happens.
- - - - -
3b59f158 by Cheng Shao at 2026-03-06T06:31:16-05:00
compiler: fix redundant import of GHC.Hs.Lit
This patch removes a redundant import of `GHC.Hs.Lit` which causes a
ghc build failure with validate flavours when bootstrapping from 9.14.
Fixes #26972.
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148d36f3 by Cheng Shao at 2026-03-06T06:32:01-05:00
compiler: avoid unneeded traversals in GHC.Unit.State
Following !15591, this patch avoids unneeded traversals in
`reportCycles`/`reportUnusable` when log verbosity is below given
threshold. Also applies `logVerbAtLeast` when appropriate.
Co-authored-by: Codex <codex(a)openai.com>
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7e31367c by Cheng Shao at 2026-03-06T06:32:46-05:00
ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool
This patch fixes redundant import in
`GHC.Internal.Event.Windows.ManagedThreadPool` that causes a
compilation error when building windows target with validate flavours
and bootstrapping from 9.14. Fixes #26976.
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fc8b8e27 by sheaf at 2026-03-06T06:33:28-05:00
System.Info.fullCompilerVersion: add 'since' annot
Fixes #26973
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c8238375 by Sylvain Henry at 2026-03-06T06:34:23-05:00
Hadrian: deprecate --bignum and automatically enable +native_bignum for JS
Deprecate --bignum=... to select the bignum backend. It's only used to
select the native backend, and this can be done with the +native_bignum
flavour transformer.
Additionally, we automatically enable +native_bignum for the JS target
because the GMP backend isn't supported.
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a3ac7074 by Sylvain Henry at 2026-03-06T06:35:17-05:00
JS: fix putEnum/fromEnum (#24593)
Don't go through Word16 when serializing Enums.
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0b36e96c by Andreas Klebinger at 2026-03-06T06:35:58-05:00
Docs: Document -fworker-wrapper-cbv default setting.
Fixes #26841
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eca445e7 by mangoiv at 2026-03-07T05:02:36-05:00
drop deb9/10 from CI, add deb13
debian 9 and 10 are end of life, hence we drop them
from our CI, but we do add debian 13. Jobs that were
previously run on 9 and 10 run on 13, too, jobs that
were run on 10, are run on 11 now. Jobs that were
previously run on debian 12 are run on debian 13 now.
This MR also updates hadrian's bootstrap plans for that
reason.
Metric Decrease:
T9872d
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12f8b829 by Luite Stegeman at 2026-03-07T05:03:33-05:00
Fix GHC.Internal.Prim haddock
Haddock used to parse Haskell source to generate documentation,
but switched to using interface files instead. This broke documentation
of the GHC.Internal.Prim module, since it's a wired-in interface that
didn't provide a document structure.
This patch adds the missing document structure and updates genprimopcode
to make the section headers and descriptions available.
fixes #26954
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f87e5e57 by Luite Stegeman at 2026-03-07T05:03:33-05:00
Remove obsolete --make-haskell-source from genprimopcode
Now that haddock uses the wired-in interface for GHC.Internal.Prim,
the generated Haskell source file is no longer needed. Remove the
--make-haskell-source code generator from genprimopcode and replace
the generated GHC/Internal/Prim.hs with a minimal static source file.
- - - - -
4a7ddc7b by Sylvain Henry at 2026-03-07T05:04:59-05:00
JS: fix linking of exposed but non-preload units (#24886)
Units exposed in the unit database but not explicitly passed on the
command-line were not considered by the JS linker. This isn't an issue
for cabal which passes every unit explicitly but it is an issue when
using GHC directly (cf T24886 test).
- - - - -
689aafcd by mangoiv at 2026-03-07T05:05:52-05:00
testsuite: double foundation timeout multiplier
The runtime timeout in the foundation test was regularly hit by code
generated by the wasm backend - we increase the timout since the high
runtime is expected on the wasm backend for this rather complex test.
Resolves #26938
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a46a1bb1 by Cheng Shao at 2026-03-09T04:50:30-04:00
compiler: add myCapabilityExpr to GHC.Cmm.Utils
This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is
computed from `BaseReg`. It's convenient for codegen logic where one
needs to pass the current Capability's pointer.
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4afc65b1 by Cheng Shao at 2026-03-09T04:50:30-04:00
compiler: lower tryPutMVar# into a ccall directly
This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it
completely and making the compiler lower `tryPutMVar#` into a ccall to
`performTryPutMVar` directly, without landing into an intermediate C
or Cmm function. `performTryPutMVar` is promoted to a public RTS
function with default visibility, and the compiler lowering logic
takes into account the C ABI of `performTryPutMVar` and converts from
C Bool to primop's `Int#` result properly.
- - - - -
9e3d6a58 by Simon Hengel at 2026-03-09T04:51:15-04:00
Don't use #line in haddocks
This confuses the parser. Haddock output is unaffected by this change.
(read: this still produces the same documentation)
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f4e8fec2 by Wolfgang Jeltsch at 2026-03-09T04:52:01-04:00
Remove in-package dependencies on `GHC.Internal.System.IO`
This contribution eliminates all dependencies on
`GHC.Internal.System.IO` from within `ghc-internal`. It comprises the
following changes:
* Make `GHC.Internal.Fingerprint` independent of I/O support
* Tighten the dependencies of `GHC.Internal.Data.Version`
* Tighten the dependencies of `GHC.Internal.TH.Monad`
* Tighten the dependencies of `GHCi.Helpers`
* Move some code that needs `System.IO` to `template-haskell`
* Move the `GHC.ResponseFile` implementation into `base`
* Move the `System.Exit` implementation into `base`
* Move the `System.IO.OS` implementation into `base`
Metric Decrease:
size_hello_artifact
size_hello_artifact_gzip
size_hello_unicode
size_hello_unicode_gzip
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91df4c82 by Sylvain Henry at 2026-03-09T04:53:20-04:00
T18832: fix Windows CI failure by dropping removeDirectoryRecursive
On Windows, open file handles prevent deletion. After killThread, the
closer thread may not have called hClose yet, causing removeDirectoryRecursive
to fail with "permission denied". The test harness cleans up the run
directory anyway, so the call is redundant.
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d7fe9671 by Cheng Shao at 2026-03-09T04:54:04-04:00
compiler: fix redundant import in GHC.StgToJS.Object
This patch fixes a redundant import in GHC.StgToJS.Object that causes
a build failure when compiling head from 9.14 with validate flavours.
Fixes #26991.
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0bfd29c3 by Cheng Shao at 2026-03-09T04:54:46-04:00
wasm: fix `Illegal foreign declaration` failure when ghci loads modules with JSFFI exports
This patch fixes a wasm ghci error when loading modules with JSFFI
exports; the `backendValidityOfCExport` check in `tcCheckFEType`
should only makes sense and should be performed when not checking the
JavaScript calling convention; otherwise, when the calling convention
is JavaScript, the codegen logic should be trusted to backends that
actually make use of it. Fixes #26998.
- - - - -
e659610c by Duncan Coutts at 2026-03-09T12:08:35-04:00
Apply NOINLINE pragmas to generated Typeable bindings
For context, see the existing Note [Grand plan for Typeable]
and the Note [NOINLINE on generated Typeable bindings] added in the
subsequent commit.
This is about reducing the number of exported top level names and
unfoldings, which reduces interface file sizes and reduces the number of
global/dynamic linker symbols.
Also accept the changed test output and metric decreases.
Tests that record the phase output for type checking or for simplifier
end up with different output: the generated bindings now have an
Inline [~] annotation, and many top level names are now local rather
than module-prefixed for export.
Also accept the numerous metric decreases in compile_time/bytes
allocated, and a few in compile_time/max_bytes_used.
There's also one instance of a decrease in runtime/max_bytes_used but
it's a ghci-way test and so presumably the reason is that it loads
smaller .hi files and/or links fewer symbols.
-------------------------
Metric Decrease:
CoOpt_Singletons
MultiLayerModulesTH_OneShot
MultilineStringsPerf
T10421
T10547
T12150
T12227
T12234
T12425
T13035
T13056
T13253
T13253-spj
T15304
T15703
T16875
T17836b
T17977b
T18140
T18223
T18282
T18304
T18698a
T18698b
T18730
T18923
T20049
T21839c
T24471
T24582
T24984
T3064
T4029
T5030
T5642
T5837
T6048
T9020
T9198
T9961
TcPlugin_RewritePerf
WWRec
hard_hole_fits
mhu-perf
-------------------------
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67df5161 by Duncan Coutts at 2026-03-09T12:08:35-04:00
Add documentation Note [NOINLINE on generated Typeable bindings]
and refer to it from the code and existing documentation.
- - - - -
c4ad6167 by Duncan Coutts at 2026-03-09T12:08:35-04:00
Switch existing note to "named wrinkle" style, (GPT1)..(GPT7)
GPT = Grand plan for Typeable
- - - - -
dc84f8e2 by Cheng Shao at 2026-03-09T12:09:21-04:00
ci: only build deb13 for validate pipeline aarch64-linux jobs
This patch drops the redundant aarch64-linux deb12 job from validate pipelines
and only keeps deb13; it's still built in nightly/release pipelines. Closes #27004.
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23a50772 by Rajkumar Natarajan at 2026-03-10T14:11:37-04:00
chore: Merge GHC.Internal.TH.Quote into GHC.Internal.TH.Monad
Move the QuasiQuoter datatype from GHC.Internal.TH.Quote to
GHC.Internal.TH.Monad and delete the Quote module.
Update submodule template-haskell-quasiquoter to use the merged
upstream version that imports from the correct module.
Co-authored-by: Cursor <cursoragent(a)cursor.com>
- - - - -
a2bb6fc3 by Simon Jakobi at 2026-03-10T14:12:23-04:00
Add regression test for #16122
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604e1180 by Cheng Shao at 2026-03-11T15:00:42-04:00
hadrian: remove the broken bench flavour
This patch removes the bench flavour from hadrian which has been
broken for years and not used for actual benchmarking (for which
`perf`/`release` is used instead). Closes #26825.
- - - - -
c3e64915 by Simon Jakobi at 2026-03-11T15:01:31-04:00
Add regression test for #18186
The original TypeInType language extension is replaced with
DataKinds+PolyKinds for compatibility.
Closes #18186.
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664996c7 by Andreas Klebinger at 2026-03-11T15:02:16-04:00
Bump nofib submodule.
We accrued a number of nofib fixes we want to have here.
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517cf64e by Simon Jakobi at 2026-03-11T15:03:03-04:00
Add regression test for #15907
Closes #15907.
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fff362cf by Simon Jakobi at 2026-03-11T15:03:49-04:00
Ensure T14272 is run in optasm way
Closes #16539.
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ec81ec2c by Simon Jakobi at 2026-03-11T15:03:49-04:00
Add regression test for #24632
Closes #24632.
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cefec47b by Simon Jakobi at 2026-03-11T15:03:50-04:00
Fix module name of T9675: T6975 -> T9675
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d3690ae8 by Andreas Klebinger at 2026-03-11T15:04:31-04:00
User guide: Clarify phase control on INLINEABLE[foo] pragmas.
Fixes #26851
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e7054934 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #12694
Closes #12694.
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4756d9f6 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #16275
Closes #16275.
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34b7e2c1 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #14908
Closes #14908.
- - - - -
4243db3d by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #14151
Closes #14151.
- - - - -
0e9f1453 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #12640
Closes #12640.
- - - - -
ae606c7f by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #15588
Closes #15588.
- - - - -
5a38ce4e by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #9445
Closes #9445.
- - - - -
d054b467 by Cheng Shao at 2026-03-11T15:05:59-04:00
compiler: implement string interning logic for BCONPtrFS
This patch adds a `FastStringEnv`-based cache of `MallocStrings`
requests to `Interp`, so that when we load bytecode with many
breakpoints that share the same module names & unit ids, we reuse the
allocated remote pointers instead of issuing duplicte `MallocStrings`
requests and bloating the C heap. Closes #26995.
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b85a0293 by Simon Jakobi at 2026-03-11T15:06:41-04:00
Add perf test for #1216
Closes #1216.
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cd7f7420 by Sylvain Henry at 2026-03-11T15:07:58-04:00
JS: check that tuple constructors are linked (#23709)
Test js-mk_tup was failing before because tuple constructors weren't
linked in. It's no longer an issue after the linker fixes.
- - - - -
d57f01a4 by Matthew Pickering at 2026-03-11T15:08:40-04:00
testsuite: Add test for foreign import prim with unboxed tuple return
This commit just adds a test that foreign import prim works with unboxed
sums.
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23d111ce by Matthew Pickering at 2026-03-11T15:08:41-04:00
Return a valid pointer in advanceStackFrameLocationzh
When there is no next stack chunk, `advanceStackFrameLocationzh` used to
return NULL in the pointer-typed StackSnapshot# result slot.
Even though the caller treats that case as "no next frame", the result is
still materialized in a GC-visible pointer slot. If a GC observes the raw
NULL there, stack decoding can crash.
Fix this by ensuring the dead pointer slot contains a valid closure
pointer. Also make the optional result explicit by returning an unboxed
sum instead of a tuple with a separate tag.
Fixes #27009
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4c58a3ae by Cheng Shao at 2026-03-11T15:09:22-04:00
hadrian: build profiled dynamic objects with -dynamic-too
This patch enables hadrian to build profiled dynamic objects with
`-dynamic-too`, addressing a build parallelism bottleneck in release
pipelines. Closes #27010.
- - - - -
870243e4 by Zubin Duggal at 2026-03-12T17:33:28+05:30
DmdAnal: Take stable unfoldings into account when determining argument demands
Previously, demand analysis only looked at the RHS to compute argument demands.
If the optimised RHS discarded uses of an argument that the stable unfolding
still needed, it would be incorrectly marked absent. Worker/wrapper would then
replace it with LitRubbish, and inlining the stable unfolding would use the
rubbish value, causing a segfault.
To fix, we introduce addUnfoldingDemands which analyses the stable unfolding
with dmdAnal and combines its DmdType with the RHS's via the new `maxDmdType`
which combines the demands of the stable unfolding with the rhs, so we can avoid
any situation where we give an absent demand to something which is still used
by the stable unfolding.
Fixes #26416.
- - - - -
669d09f9 by Cheng Shao at 2026-03-13T15:06:07-04:00
hadrian: remove redundant library/rts ways definitions from stock flavours
This patch removes redundant library/rts ways definitions from stock
flavours in hadrian; they can be replaced by applying appropriate
filters on `defaultFlavour`.
- - - - -
a27dc081 by Teo Camarasu at 2026-03-13T15:06:51-04:00
ghc-internal: move bits Weak of finalizer interface to base
We move parts of the Weak finalizer interface to `base` only the parts
that the RTS needs to know about are kept in `ghc-internal`.
This lets us then prune our imports somewhat and get rid of some SOURCE imports.
Resolves #26985
- - - - -
6eef855b by Sylvain Henry at 2026-03-13T15:08:18-04:00
Stg/Unarise: constant-folding during unarisation (#25650)
When building an unboxed sum from a literal argument, mkUbxSum
previously emitted a runtime cast via `case primop [lit] of var -> ...`.
This wrapper prevented GHC from recognising the result as a static
StgRhsCon, causing top-level closures to be allocated as thunks instead
of being statically allocated.
Fix: try to perform the numeric literal cast at compile time using
mkLitNumberWrap (wrapping semantics). If successful, return the cast
literal directly with an identity wrapper (no case expression). The
runtime cast path is kept as fallback for non-literal arguments.
Test: codeGen/should_compile/T25650
- - - - -
905f8723 by Simon Jakobi at 2026-03-13T15:09:09-04:00
Add regression test for #2057
Test that GHC stops after an interface-file error instead of
continuing into the linker.
The test constructs a stale package dependency on purpose. `pkgB` is compiled
against one version of package `A`, then the same unit id is replaced by an
incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`,
finds an unfolding that still mentions the old `A`, and should fail while
loading interfaces.
Closes #2057.
Assisted-by: Codex
- - - - -
a13245a9 by Sylvain Henry at 2026-03-13T15:10:06-04:00
JS: fix recompilation avoidance (#23013)
- we were checking the mtime of the *.jsexe directory, not of a file
- we were not computing the PkgsLoaded at all
- - - - -
07442653 by Cheng Shao at 2026-03-13T15:10:51-04:00
hadrian: bump index state & bootstrap plans
This patch bumps hadrian index state & bootstrap plans:
- The updated index state allows bootstrapping from 9.14 without cabal
allow-newer hacks
- The updated bootstrap plans all contain shake-0.19.9 containing
important bugfix, allowing a subsequent patch to bump shake bound to
ensure the bugfix is included
- ghc 9.14.1 bootstrap plan is added
- - - - -
fdc1dbad by Cheng Shao at 2026-03-13T15:10:51-04:00
ci: add ghc 9.14.1 to bootstrap matrix
This patch adds ghc 9.14.1 to bootstrap matrix, so that we test
bootstrapping from ghc 9.14.1.
- - - - -
91916079 by Sylvain Henry at 2026-03-13T15:11:43-04:00
T17912: wait for opener thread to block before killing it (#24739)
Instead of a fixed 1000ms delay, poll threadStatus until the opener
thread is in BlockedOnForeignCall, ensuring killThread only fires once
the thread is provably inside the blocking open() syscall. This prevents
the test from accidentally passing on Windows due to scheduling races.
- - - - -
baa4ebb4 by Cheng Shao at 2026-03-13T15:12:26-04:00
template-haskell: fix redundant import in Language.Haskell.TH.Quote
This patch fixes a redundant import in `Language.Haskell.TH.Quote`
that causes a ghc build failure when bootstrapping from 9.14 with
validate flavours. Fixes #27014.
- - - - -
02e68a86 by Brandon Simmons at 2026-03-13T15:13:19-04:00
Add a cumulative gc_sync_elapsed_ns counter to GHC.Internal.Stats
This makes it possible to get an accurate view of time spent in sync
phase when using prometheus-style sampling. Previously this was only
available for the most recent GC.
This intentionally leaves GHC.Stats API unchanged since it is marked as
deprecated, and API changes there require CLC approval.
Fixes #26944
- - - - -
a18fa3c1 by Cheng Shao at 2026-03-14T05:12:14-04:00
configure: make $LLVMAS default to $CC when $CcLlvmBackend is YES
This patch changes the $LLVMAS detection logic in configure so that
when it's not manually specified by the user, it defaults to $CC if
$CcLlvmBackend is YES. It's a more sensible default than auto-detected
clang from the environment, especially when cross-compiling, $CC as
the cross target's LLVM assembler is more compatible with the use case
than the system-wide clang. Fixes #26769.
- - - - -
3774086e by Matthew Pickering at 2026-03-14T05:13:00-04:00
exceptions: annotate onException continuation with WhileHandling
Before this patch, an exception thrown in the `onException` handler
would loose track of where the original exception was thrown.
```
import Control.Exception
main :: IO ()
main = failingAction `onException` failingCleanup
where
failingAction = throwIO (ErrorCall "outer failure")
failingCleanup = throwIO (ErrorCall "cleanup failure")
```
would report
```
T28399: Uncaught exception ghc-internal:GHC.Internal.Exception.ErrorCall:
cleanup failure
HasCallStack backtrace:
throwIO, called at T28399.hs:<line>:<column> in <package-id>:Main
```
notice that the "outer failure" exception is not present in the error
message.
With this patch, any exception thrown is in the handler is annotated
with WhileHandling. The resulting message looks like
```
T28399: Uncaught exception ghc-internal:GHC.Internal.Exception.ErrorCall:
cleanup failure
While handling outer failure
HasCallStack backtrace:
throwIO, called at T28399.hs:7:22 in main:Main
```
CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/397
Fixes #26759
- - - - -
63ae8eb3 by Andreas Klebinger at 2026-03-14T05:13:43-04:00
Fix missing profiling header for origin_thunk frame.
Fixes #27007
- - - - -
213d2c0e by Cheng Shao at 2026-03-14T05:14:28-04:00
ci: fix ci-images revision
The current ci-images revision was a commit on the WIP branch of
https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/183, and
it's not on the current ci-images master branch. This patch fixes the
image revision to use the current tip of ci-images master.
- - - - -
fc2b083f by Andreas Klebinger at 2026-03-14T05:15:14-04:00
Revert "hadrian/build-cabal: Better respect and utilize -j"
This reverts commit eab3dbba79650e6046efca79133b4c0a5257613d.
While it's neat this currently isn't well supported on all platforms.
It's time will come, but for now I'm reverting this to avoid issues for
users on slightly unconvential platforms.
This will be tracked at #26977.
- - - - -
12a706cf by Cheng Shao at 2026-03-14T16:37:54-04:00
base: fix redundant imports in GHC.Internal.Weak.Finalize
This patch fixes redundant imports in GHC.Internal.Weak.Finalize that
causes a regression in bootstrapping head from 9.14 with validate
flavours. Fixes #27026.
- - - - -
b5d39cad by Matthew Pickering at 2026-03-14T16:38:37-04:00
Use explicit syntax rather than pure
- - - - -
43638643 by Andreas Klebinger at 2026-03-15T18:15:48-04:00
Configure: Fix check for --target support in stage0 CC
The check FP_PROG_CC_LINKER_TARGET used $CC unconditionally to check for
--target support. However this fails for the stage0 config where the C
compiler used is not $CC but $CC_STAGE0.
Since we already pass the compiler under test into the macro I simply
changed it to use that instead.
Fixes #26999
- - - - -
18fd0df6 by Simon Hengel at 2026-03-15T18:16:33-04:00
Fix typo in recursive_do.rst
- - - - -
86bd9bfc by fendor at 2026-03-17T23:46:09-04:00
Introduce `-fimport-loaded-targets` GHCi flag
This new flag automatically adds all loaded targets to the GHCi session
by adding an `InteractiveImport` for the loaded targets.
By default, this flag is disabled, as it potentially increases memory-usage.
This interacts with the flag `-fno-load-initial-targets` as follows:
* If no module is loaded, no module is added as an interactive import.
* If a reload loads up to a module, all loaded modules are added as
interactive imports.
* Unloading modules removes them from the interactive context.
Fixes #26866 by rendering the use of a `-ghci-script` to achieve the
same thing redundant.
- - - - -
e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00
ghc-internal: Remove GHC.Internal.Data.Eq
It served no purpose other than being a re-export.
- - - - -
6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00
ghc-internal: Refine GHC.Internal.Base imports
Removed re-exports from GHC.Internal.Base. This reveals some modules
that don't actually use anything *defined* in GHC.Internal.Base, and
that can be pushed down a little in the import graph.
Replaced most imports of GHC.Internal.Base with non-wildcard imports
from modules where the identifiers are actually defined.
Part of #26834
Metric Decrease:
T5321FD
- - - - -
7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00
ci: clone, don't copy when creating the cabal cache
Also removed WINDOWS_HOST variable detected via uname - we now just
check whether the CI job has windows in its name. This works because we
only ever care about it if the respective job is not a cross job. We
also statically detect darwin cross jobs in the same way. We only ever have
darwin -> darwin cross jobs so this is enough to detect the host
reliably.
- - - - -
f8817879 by mangoiv at 2026-03-17T23:48:44-04:00
ci: mark size_hello_artifact fragile on darwin x86
The size of the x86_64 hello artifact is not stable which results in flaky testruns.
Resolves #26814
- - - - -
e34cb6da by Adam Gundry at 2026-03-20T12:20:00-04:00
ghci: Mention active language edition in startup banner
Per GHC proposal 632, this makes the GHCi startup banner include
the active language edition, plus an indication of whether this
was the default (as opposed to being explicitly selected via an
option such as `-XGHC2024`). For example:
```
$ ghci
GHCi, version 9.14.1: https://www.haskell.org/ghc/ :? for help
Using default language edition: GHC2024
ghci>
```
Fixes #26037.
- - - - -
52c3e6ba by sheaf at 2026-03-20T12:21:09-04:00
Improve incomplete record selector warnings
This commit stops GHC from emitting spurious incomplete record selector
warnings for bare selectors/projections such as .fld
There are two places we currently emit incomplete record selector
warnings:
1. In the desugarer, when we see a record selector or an occurrence
of 'getField'. Here, we can use pattern matching information to
ensure we don't give false positives.
2. In the typechecker, which might sometimes give false positives but
can emit warnings in cases that the pattern match checker would
otherwise miss.
This is explained in Note [Detecting incomplete record selectors]
in GHC.HsToCore.Pmc.
Now, we obviously don't want to emit the same error twice, and generally
we prefer (1), as those messages contain fewer false positives. So we
suppress (2) when we are sure we are going to emit (1); the logic for
doing so is in GHC.Tc.Instance.Class.warnIncompleteRecSel,
and works by looking at the CtOrigin.
Now, the issue was that this logic handled explicit record selectors as
well as overloaded record field selectors such as "x.r" (which turns
into a simple GetFieldOrigin CtOrigin), but it didn't properly handle
record projectors like ".fld" or ".fld1.fld2" (which result in other
CtOrigins such as 'RecordFieldProjectionOrigin').
To solve this problem, we re-use the 'isHasFieldOrigin' introduced in
fbdc623a (slightly adjusted).
On the way, we also had to update the desugarer with special handling
for the 'ExpandedThingTc' case in 'ds_app', to make sure that
'ds_app_var' sees all the type arguments to 'getField' in order for it
to indeed emit warnings like in (1).
Fixes #26686
- - - - -
309d7e87 by Cheng Shao at 2026-03-20T12:21:53-04:00
rts: opportunistically grow the MutableByteArray# in-place in resizeMutableByteArray#
Following !15234, this patch improves `resizeMutableByteArray#` memory
efficiency by growing the `MutableByteArray#` in-place if possible,
addressing an old todo comment here. Also adds a new test case
`resizeMutableByteArrayInPlace` that stresses this behavior.
- - - - -
7d4ef162 by Matthew Craven at 2026-03-20T12:22:47-04:00
Change representation of floating point literals
This commit changes the representation of floating point literals
throughough the compiler, in particular in Core and Cmm.
The Rational type is deficient for this purpose, dealing poorly
with NaN, +/-Infinity, and negative zero. Instead, the new module
GHC.Types.Literal.Floating uses the host Float/Double type to represent
NaNs, infinities and negative zero. It also contains a Rational
constructor, for the benefit of -fexcess-precision.
Other changes:
- Remove Note [negative zero] and related code
This also removes the restrictions on constant-folding of division
by zero, and should make any problems with NaN/Infinity more obvious.
- Use -0.0 as the additive identity for Core constant folding rules
for floating-point addition, fixing #21227.
- Manual worker-wrapper for GHC.Float.rationalToDouble. This is
intended to prevent the compiler's WW on this function from
interfering with constant-folding. This change means that we now
avoid allocating a box for the result of a 'realToFrac' call in
T10359.
- Combine floatDecodeOp and doubleDecodeOp.
This change also fixes a bug in doubleDecodeOp wherein it
would incorrectly produce an Int# instead of an Int64#
literal for the mantissa component with 64-bit targets.
- Use Float/Double for assembly immediates, and update the X86 and
PowerPC backends to properly handle special values such as NaN and
infinity.
- Allow 'rational_to' to handle zero denominators, fixing a
TODO in GHC.Core.Opt.ConstantFold.
Fixes #8364 #9811 #18897 #21227
Progress towards #26919
Metric Decrease:
T10359
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
-------------------------
Metric Decrease:
T1969
T5321FD
-------------------------
- - - - -
80e2dd4f by Zubin Duggal at 2026-03-20T12:23:33-04:00
compiler/ffi: Collapse void pointer chains in capi wrappers
New gcc/clang treat -Wincompatible-pointer-types as an error by
default. Since C only allows implicit conversion from void*, not void**,
capi wrappers for functions taking e.g. abstract** would fail to compile
when the Haskell type Ptr (Ptr Abstract) was naively translated to void**.
Collapse nested void pointers to a single void* when the pointee type
has no known C representation.
Fixes #26852
- - - - -
1c50bd7b by Luite Stegeman at 2026-03-20T12:24:37-04:00
Move some functions related to pointer tagging to a separate module
- - - - -
bfd7aafd by Luite Stegeman at 2026-03-20T12:24:37-04:00
Branchless unpacking for enumeration types
Change unpacking for enumeration types to go to Word8#/Word16#/Word#
directly instead of going through an intermediate unboxed sum. This
allows us to do a branchless conversion using DataToTag and TagToEnum.
Fixes #26970
- - - - -
72b20fc0 by Luite Stegeman at 2026-03-20T12:25:30-04:00
bytecode: Carefully SLIDE off the end of a stack chunk
The SLIDE bytecode instruction was not checking for stack chunk
boundaries and could corrupt the stack underflow frame, leading
to crashes.
We add a check to use safe writes if we cross the chunk boundary
and also handle stack underflow if Sp is advanced past the underflow
frame.
fix #27001
- - - - -
2e22b43c by Cheng Shao at 2026-03-20T12:26:14-04:00
ghci: serialize BCOByteArray buffer directly when possible
This patch changes the `Binary` instances of `BCOByteArray` to
directly serialize the underlying buffer when possible, while also
taking into account the issue of host-dependent `Word` width. See
added comments and amended `Note [BCOByteArray serialization]` for
detailed explanation. Closes #27020.
- - - - -
89d9ba37 by Sylvain Henry at 2026-03-20T12:27:34-04:00
JS: replace BigInt with Number arithmetic for 32/64-bit quot/rem (#23597)
Replace BigInt-based implementations of quotWord32, remWord32,
quotRemWord32, quotRem2Word32, quotWord64, remWord64, quotInt64, and
remInt64 with pure Number (double/integer) arithmetic to avoid the
overhead of BigInt promotion.
- - - - -
ae4ddd60 by Sylvain Henry at 2026-03-20T12:28:28-04:00
Core: add constant-folding rules for Addr# eq/ne (#18032)
- - - - -
3e767f98 by Matthew Pickering at 2026-03-20T12:29:11-04:00
Use OsPath rather than FilePath in Downsweep cache
This gets us one step closure to uniformly using `OsPath` in the
compiler.
- - - - -
2c57de29 by Cheng Shao at 2026-03-20T12:29:55-04:00
hadrian: fix ghc-in-ghci flavour stage0 shared libraries
This patch fixes missing stage0 shared libraries in hadrian
ghc-in-ghci flavour, which was accidentally dropped in
669d09f950a6e88b903d9fd8a7571531774d4d5d and resulted in a regression
in HLS support on linux/macos. Fixes #27057.
- - - - -
5b1be555 by Sylvain Henry at 2026-03-20T12:30:48-04:00
JS: install rts/Types.h header file (#27033)
It was an omission, making HsFFI.h not usable with GHC using the JS
backend.
- - - - -
b883f08f by Cheng Shao at 2026-03-20T12:31:33-04:00
hadrian: don't compile RTS with -Winline
This patch removes `-Winline` from cflags when compiling the RTS,
given that:
1. It generates a huge pile of spam and hurts developer experience
2. Whether inlining happens is highly dependent on toolchains,
flavours, etc, and it's not really an issue to fix if inlining
doesn't happen; it's a hint to the C compiler anyway.
Fixes #27060.
- - - - -
333387d6 by Cheng Shao at 2026-03-20T12:31:33-04:00
hadrian: compile libffi-clib with -Wno-deprecated-declarations
This patch adds `-Wno-deprecated-declarations` to cflags of
`libffi-clib`, given that it produces noise at compile-time that
aren't really our issue to fix anyway, it's from vendored libffi
source code.
- - - - -
67c47771 by Rodrigo Mesquita at 2026-03-20T12:32:17-04:00
Expose decodeStackWithIpe from ghc-experimental
This decoding is useful to the debugger and it wasn't originally
exported as an oversight.
- - - - -
18513365 by Matthew Pickering at 2026-03-21T04:43:26-04:00
Add support for custom external interpreter commands
It can be useful for GHC API clients to implement their own external
interpreter commands.
For example, the debugger may want an efficient way to inspect the
stacks of the running threads in the external interpreter.
- - - - -
4636d906 by mangoiv at 2026-03-21T04:44:10-04:00
ci: remove obsolete fallback for old debian and ubuntu versions
- - - - -
2e3a2805 by mangoiv at 2026-03-21T04:44:10-04:00
ci: drop ubuntu 18 and 20
Ubuntu 18 EOL: May 2023
Ubuntu 20 EOL: May 2025
We should probably not make another major release supporting these platforms.
Also updates the generator script.
Resolves #25876
- - - - -
de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00
rts: fix -Wcompare-distinct-pointer-types errors
This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS
which should have been caught by the `validate` flavour but was
warnings in CI due to the recent `+werror` regression.
- - - - -
b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00
ghc-internal: fix unused imports
This commit fixes unused imports in `ghc-internal` which should have
been caught by the `validate` flavour but was warnings in CI due to
the recent `+werror` regression. Fixes #26987 #27059.
- - - - -
da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00
ghci: fix unused imports
This commit fixes unused imports in `ghci` which should have been
caught by the `validate` flavour but was warnings in CI due to the
recent `+werror` regression. Fixes #26987 #27059.
- - - - -
955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00
compiler: fix unused imports in GHC.Tc.Types.Origin
This commit fixes unused imports in `GHC.Tc.Types.Origin` which should
have been caught by the `validate` flavour but was warnings in CI due
to the recent `+werror` regression. Fixes #27059.
- - - - -
3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00
hadrian: fix missing +werror in validate flavour
This patch fixes missing `+werror` in validate flavour, which was an
oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066.
- - - - -
44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00
ci: bump CACHE_REV and add the missing reminder
This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI
errors due to stale cabal cache on some runners, and also adds a
reminder to remind future maintainers. Fixes #27075.
- - - - -
2a218737 by ARATA Mizuki at 2026-03-23T11:11:39-04:00
Add 128-bit SIMD support to AArch64 NCG
Changes:
- Add `Format` field to vector-capable instructions.
These instructions will emit `vN.4s` (for example) as a operand.
- Additional constructors for `Operand`:
`OpVecLane` represents a vector lane and will be emitted as `vN.<width>[<index>]` (`vN.s[3]` for example).
`OpScalarAsVec` represents a scalar, but printed as a vector lane like `vN.<width>[0]` (`vN.s[0]` for example).
- Integer quot/rem are implemented in C, like x86.
Closes #26536
Metric Increase:
T3294
- - - - -
5d6e2be9 by ARATA Mizuki at 2026-03-23T11:11:39-04:00
AArch64 NCG: Improve code generation for floating-point and vector constants
Some floating-point constants can be directly encoded using the FMOV instruction.
Similarly, a class of vectors with same values can be encoded using FMOV, MOVI, or MVNI.
- - - - -
c6d262aa by Simon Jakobi at 2026-03-23T11:12:22-04:00
Add regression test for #13729
Closes #13729.
- - - - -
aa5dfe67 by Sylvain Henry at 2026-03-26T03:48:56-04:00
Check that shift values are valid
In GHC's codebase in non-DEBUG builds we silently substitute shiftL/R
with unsafeShiftL/R for performance reasons. However we were not
checking that the shift value was valid for unsafeShiftL/R, leading to
wrong computations, but only in non-DEBUG builds.
This patch adds the necessary checks and reports an error when a wrong
shift value is passed.
- - - - -
c8a7b588 by Sylvain Henry at 2026-03-26T03:48:56-04:00
Implement basic value range analysis (#25718)
Perform basic value range analysis to try to determine at compile time
the result of the application of some comparison primops (ltWord#, etc.).
This subsumes the built-in rewrite rules used previously to check if one
of the comparison argument was a bound (e.g. (x :: Word8) <= 255 is
always True). Our analysis is more powerful and handles type
conversions: e.g. word8ToWord x <= 255 is now detected as always True too.
We also use value range analysis to filter unreachable alternatives in
case-expressions. To support this, we had to allow case-expressions for
primitive types to not have a DEFAULT alternative (as was assumed before
and checked in Core lint).
- - - - -
a5ec467e by ARATA Mizuki at 2026-03-26T03:49:49-04:00
rts: Align stack to 64-byte boundary in StgRun on x86
When LLVM spills AVX/AVX-512 vector registers to the stack, it requires
32-byte (__m256) or 64-byte (__m512) alignment. If the stack is not
sufficiently aligned, LLVM inserts a realignment prologue that reserves
%rbp as a frame pointer, conflicting with GHC's use of %rbp as an STG
callee-saved register and breaking the tail-call-based calling convention.
Previously, GHC worked around this by lying to LLVM about the stack
alignment and rewriting aligned vector loads/stores (VMOVDQA, VMOVAPS)
to unaligned ones (VMOVDQU, VMOVUPS) in the LLVM Mangler. This had two
problems:
- It did not extend to AVX-512, which requires 64-byte alignment. (#26595)
- When Haskell calls a C function that takes __m256/__m512 arguments on
the stack, the callee requires genuine alignment, which could cause a
segfault. (#26822)
This patch genuinely aligns the stack to 64 bytes in StgRun by saving
the original stack pointer before alignment and restoring it in
StgReturn. We now unconditionally advertise 64-byte stack alignment to
LLVM for all x86 targets, making rewriteAVX in the LLVM Mangler
unnecessary. STG_RUN_STACK_FRAME_SIZE is increased from 48 to 56 bytes
on non-Windows x86-64 to store the saved stack pointer.
Closes #26595 and #26822
Co-Authored-By: Claude Opus 4.5 <noreply(a)anthropic.com>
- - - - -
661da815 by Teo Camarasu at 2026-03-26T03:50:33-04:00
ghc-internal: Float Generics to near top of module graph
We remove GHC.Internal.Generics from the critical path of the
`ghc-internal` module graph. GHC.Internal.Generics used to be in the
middle of the module graph, but now it is nearer the top (built later).
This change thins out the module graph and allows us to get rid of the
ByteOrder hs-boot file.
We implement this by moving Generics instances from the module where the
datatype is defined to the GHC.Internal.Generics module. This trades off
increasing the compiled size of GHC.Internal.Generics with reducing the
dependency footprint of datatype modules.
Not all instances are moved to GHC.Internal.Generics. For instance,
`GHC.Internal.Control.Monad.Fix` keeps its instance as it is one of the
very last modules compiled in `ghc-internal` and so inverting the
relationship here would risk adding GHC.Internal.Generics back onto the
critical path.
We also don't change modules that are re-exported from the `template-haskell` or `ghc-heap`.
This is done to make it easy to eventually move `Generics` to `base`
once something like #26657 is implemented.
Resolves #26930
Metric Decrease:
T21839c
- - - - -
45428f88 by sheaf at 2026-03-26T03:51:31-04:00
Avoid infinite loop in deep subsumption
This commit ensures we only unify after we recur in the deep subsumption
code in the FunTy vs non-FunTy case of GHC.Tc.Utils.Unify.tc_sub_type_deep,
to avoid falling into an infinite loop.
See the new Wrinkle [Avoiding a loop in tc_sub_type_deep] in
Note [FunTy vs non-FunTy case in tc_sub_type_deep] in GHC.Tc.Utils.Unify.
Fixes #26823
Co-authored-by: simonpj <simon.peytonjones(a)gmail.com>
- - - - -
2823b039 by Ian Duncan at 2026-03-26T03:52:21-04:00
AArch64: fix MOVK regUsageOfInstr to mark dst as both read and written
MOVK (move with keep) modifies only a 16-bit slice of the destination
register, so the destination is both read and written. The register
allocator must know this to avoid clobbering live values. Update
regUsageOfInstr to list the destination in both src and dst sets.
No regression test: triggering the misallocation requires specific
register pressure around a MOVK sequence, which is difficult to
reliably provoke from Haskell source.
- - - - -
57b7878d by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #12002
Closes #12002.
- - - - -
c8f9df2d by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #12046
Closes #12046.
Co-authored-by: Andreas Klebinger <klebinger.andreas(a)gmx.at>
- - - - -
615d72ac by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #13180
Closes #13180.
- - - - -
423eebcf by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #11141
Closes #11141.
- - - - -
286849a4 by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #11505
Closes #11505.
- - - - -
7db149d9 by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression perf test for #13820
Closes #13820.
- - - - -
e73c4adb by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #10381
Closes #10381.
- - - - -
5ebcfb57 by Benjamin Maurer at 2026-03-26T03:54:02-04:00
Generate assembly on x86 for word2float (#22252)
We used to emit C function call for MO_UF_Conv primitive.
Now emits direct assembly instead.
Co-Authored-By: Sylvain Henry <sylvain(a)haskus.fr>
Co-Authored-By: Claude Sonnet 4.6 <noreply(a)anthropic.com>
- - - - -
5b550754 by Matthew Pickering at 2026-03-26T03:54:51-04:00
rts: forward clone-stack messages after TSO migration
MSG_CLONE_STACK assumed that the target TSO was still owned by the
capability that received the message. This is not always true: the TSO
can migrate before the inbox entry is handled.
When that happened, handleCloneStackMessage could clone a live stack from
the wrong capability and use the wrong capability for allocation and
performTryPutMVar, leading to stack sanity failures such as
checkStackFrame: weird activation record found on stack.
Fix this by passing the current capability into
handleCloneStackMessage, rechecking msg->tso->cap at handling time, and
forwarding the message if the TSO has migrated. Once ownership matches,
use the executing capability consistently for cloneStack, rts_apply, and
performTryPutMVar.
Fixes #27008
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ef0a1bd2 by mangoiv at 2026-03-26T03:55:34-04:00
release tracking: adopt release tracking ticket from #16816
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a7f40fd9 by mangoiv at 2026-03-26T03:55:34-04:00
release tracking: add a release tracking ticket
Brings the information in the release tracking ticket up to date with
https://gitlab.haskell.org/ghc/ghc-hq/-/blob/main/release-management.mkd
Resolves #26691
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161d3285 by Teo Camarasu at 2026-03-26T03:56:18-04:00
Revert "Set default eventlog-flush-interval to 5s"
Flushing the eventlog forces a synchronisation of all the capabilities
and there was a worry that this might lead to a performance cost for
some highly parallel workloads.
This reverts commit 66b96e2a591d8e3d60e74af3671344dfe4061cf2.
- - - - -
36eed985 by Cheng Shao at 2026-03-26T03:57:03-04:00
ghc-boot: move GHC.Data.SmallArray to ghc-boot
This commit moves `GHC.Data.SmallArray` from the `ghc` library to
`ghc-boot`, so that it can be used by `ghci` as well:
- The `Binary` (from `ghc`) instance of `SmallArray` is moved to
`GHC.Utils.Binary`
- Util functions `replicateSmallArrayIO`, `mapSmallArrayIO`,
`mapSmallArrayM_`, `imapSmallArrayM_` , `smallArrayFromList` and
`smallArrayToList` are added
- The `Show` instance is added
- The `Binary` (from `binary`) instance is added
- - - - -
fdf828ae by Cheng Shao at 2026-03-26T03:57:03-04:00
compiler: use `Binary` instance of `BCOByteArray` for bytecode objects
This commit defines `Binary` (from `compiler`) instance of
`BCOByteArray` which serializes the underlying buffer directly, and
uses it directly in bytecode object serialization. Previously we reuse
the `Binary` (from `binary`) instance, and this change allows us to
avoid double-copying via an intermediate `ByteString` when using
`put`/`get` in `binnary`. Also see added comment for explanation.
- - - - -
3bf62d0a by Cheng Shao at 2026-03-26T03:57:03-04:00
ghci: use SmallArray directly in ResolvedBCO
This patch makes ghci use `SmallArray` directly in `ResolvedBCO` when
applicable, making the memory representation more compact and reducing
marshaling overhead. Closes #27058.
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3d6492ce by Wen Kokke at 2026-03-26T03:57:53-04:00
Fix race condition between flushEventLog and start/endEventLogging.
This commit changes `flushEventLog` to acquire/release the `state_change` mutex to prevent interleaving with `startEventLogging` and `endEventLogging`. In the current RTS, `flushEventLog` _does not_ acquire this mutex, which may lead to eventlog corruption on the following interleaving:
- `startEventLogging` writes the new `EventLogWriter` to `event_log_writer`.
- `flushEventLog` flushes some events to `event_log_writer`.
- `startEventLogging` writes the eventlog header to `event_log_writer`.
This causes the eventlog to be written out in an unreadable state, with one or more events preceding the eventlog header.
This commit renames the old function to `flushEventLog_` and defines `flushEventLog` simply as:
```c
void flushEventLog(Capability **cap USED_IF_THREADS)
{
ACQUIRE_LOCK(&state_change_mutex);
flushEventLog_(cap);
RELEASE_LOCK(&state_change_mutex);
}
```
The old function is still needed internally within the compilation unit, where it is used in `endEventLogging` in a context where the `state_change` mutex has already been acquired. I've chosen to mark `flushEventLog_` as static and let other uses of `flushEventLog` within the RTS refer to the new version. There is one use in `hs_init_ghc` via `flushTrace`, where the new locking behaviour should be harmless, and one use in `handle_tick`, which I believe was likely vulnerable to the same race condition, so the new locking behaviour is desirable.
I have not added a test. The behaviour is highly non-deterministic and requires a program that concurrently calls `flushEventLog` and `startEventLogging`/`endEventLogging`. I encountered the issue while developing `eventlog-socket` and within that context have verified that my patch likely addresses the issue: a test that used to fail within the first dozen or so runs now has been running on repeat for several hours.
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7b9a75f0 by Phil Hazelden at 2026-03-26T03:58:37-04:00
Fix build with werror on glibc 2.43.
We've been defining `_XOPEN_SOURCE` and `_POSIX_C_SOURCE` to the same
values as defined in glibc prior to 2.43. But in 2.43, glibc changes
them to new values, which means we get a warning when redefining them.
By `#undef`ing them first, we no longer get a warning.
Closes #27076.
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fe6e76c5 by Tobias Haslop at 2026-03-26T03:59:30-04:00
Fix broken Haddock link to Bifunctor class in description of Functor class
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404b71c1 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Fix assert in Interpreter.c
If we skip exactly the number of words on the stack we end up on
the first word in the next chunk.
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a85bd503 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Support arbitrary size unboxed tuples in bytecode
This stores the size (number of words on the stack) of the next
expected tuple in the TSO, ctoi_spill_size field, eliminating
the need of stg_ctoi_tN frames for each size.
Note: On 32 bit platform there is still a bytecode tuple size
limit of 255 words on the stack.
Fixes #26946
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e2209031 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Add specialized frames for small tuples
Small tuples are now returned more efficiently to the interpreter.
They use one less word of stack space and don't need manipulation
of the TSO anymore.
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b26bb2ea by VeryMilkyJoe at 2026-03-27T04:41:38-04:00
Remove backwards compatibility pattern synonym `ModLocation`
Fixes #24932
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66e5e324 by Vladislav Zavialov at 2026-03-27T04:42:25-04:00
Extend HsExpr with the StarIsType syntax (#26587, #26967)
This patch allows kinds of the form `k -> *` and `* -> k` to occur in
expression syntax, i.e. to be used as required type arguments.
For example:
{-# LANGUAGE RequiredTypeArguments, StarIsType #-}
x1 = f (* -> * -> *)
x2 = f (forall k. k -> *)
x3 = f ((* -> *) -> Constraint)
Summary of the changes:
* Introduce the HsStar constructor of HsExpr and its extension field XStar.
It is analogous to HsStarTy in HsType.
* Refactor HsStarTy to store the unicode flag as TokStar, defined as
type TokStar = EpUniToken "*" "★" -- similar to TokForall, TokRArrow, etc.
The token is stored in the extension field and replaces the Bool field.
* Extend the `infixexp2` nonterminal to parse `*` as a direct argument of `->`.
This is more limited than the full StarIsType syntax, but has the nice
property of not conflicting with the multiplication operator `a * b`.
Test case: T26967 T26967_tyop
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f8de456f by Sylvain Henry at 2026-03-27T04:43:22-04:00
STM: don't create a transaction in the rhs of catchRetry# (#26028)
We don't need to create a transaction for the rhs of (catchRetry#)
because contrary to the lhs we don't need to abort it on retry. Moreover
it is particularly harmful if we have code such as (#26028):
let cN = readTVar vN >> retry
tree = c1 `orElse` (c2 `orElse` (c3 `orElse` ...))
atomically tree
Because it will stack transactions for the rhss and the read-sets of all
the transactions will be iteratively merged in O(n^2) after the
execution of the most nested retry.
This is the second attempt at implementing this. The first attempt
triggered segfaults (#26291) and has been reverted.
Co-Authored-By: Claude Sonnet 4.6 <noreply(a)anthropic.com>
- - - - -
fcf092dd by Luite Stegeman at 2026-03-27T04:44:17-04:00
Windows: remove StgAsyncIOResult and fix crash/leaks
In stg_block_async{_void}, a stack slot was reserved for
an StgAsyncIOResult. This slot would be filled by the IO
manager upon completion of the async call.
However, if the blocked thread was interrupted by an async
exception, we would end up in an invalid state:
- If the blocked computation was never re-entered, the
StgAsyncIOResult would never be freed.
- If the blocked computation was re-entered, the thread would
find an unitialized stack slot for the StgAsyncIOResult,
leading to a crash reading its fields, or freeing the pointer.
We fix this by removing the StgAsyncIOResult altogether and writing
the result directly to the stack.
Fixes #26341
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05094993 by Luite Stegeman at 2026-03-27T04:45:12-04:00
Don't refine DEFAULT alt for unary typeclasses
A non-DEFAULT data alt for a unary typeclass dictionary would
interfere with Unary Class Magic, leading to segfaults.
fixes #27071
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4ee260cf by sheaf at 2026-03-27T04:46:06-04:00
Fix several oversights in hsExprType
This commit fixes several oversights in GHC.Hs.Syn.Type.hsExprType:
- The 'RecordCon' case was returning the type of the constructor,
instead of the constructor application. This is fixed by using
'splitFunTys'.
- The 'ExplicitTuple' case failed to take into account tuple sections,
and was also incorrectly handling 1-tuples (e.g. 'Solo') which can
be constructed using Template Haskell.
- The 'NegApp' case was returning the type of the negation operator,
again failing to apply it to the argument. Fixed by using
'funResultTy'.
- The 'HsProc' case was computing the result type of the arrow proc
block, without taking into account the argument type. Fix that by
adding a new field to 'CmdTopTc' that stores the arrow type, so that
we can construct the correct result type `arr a b` for
`proc (pat :: a) -> (cmd :: b)`.
- The 'ArithSeq' and 'NegApp' cases were failing to take into account
the result 'HsWrapper', which could e.g. silently drop casts.
This is fixed by introducing 'syntaxExpr_wrappedFunResTy' which, on
top of taking the result type, applies the result 'HsWrapper'.
These fixes are validated by the new GHC API test T26910.
Fixes #26910
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e97232ce by Hai at 2026-03-27T04:47:04-04:00
Parser.y: avoid looking at token with QualifiedDo
This changes the behavior of 'hintQualifiedDo' so that the supplied
token is not inspected when the QualifiedDo language extension bit is
set.
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9831385b by Vladislav Zavialov at 2026-03-27T17:22:30-04:00
Infix holes in types (#11107)
This patch introduces several improvements that follow naturally from
refactoring HsOpTy to represent the operator as an HsType, aligning it
with the approach taken by OpApp and HsExpr.
User-facing changes:
1. Infix holes (t1 `_` t2) are now permitted in types, following the
precedent set by term-level expressions.
Test case: T11107
2. Error messages for illegal promotion ticks are now reported at more
precise source locations.
Test case: T17865
Internal changes:
* The definition of HsOpTy now mirrors that of OpApp:
| HsOpTy (XOpTy p) (LHsType p) (LHsType p) (LHsType p)
| OpApp (XOpApp p) (LHsExpr p) (LHsExpr p) (LHsExpr p)
This moves us one step closer to unifying HsType and HsExpr.
* Ignoring locations,
the old pattern match (HsOpTy x prom lhs op rhs)
is now written as (HsOpTy x lhs (HsTyVar x' prom op) rhs)
but we also handle (HsOpTy x lhs (HsWildCardTy x') rhs)
Constructors other than HsTyVar and HsWildCardTy never appear
in the operator position.
* The various definitions across the compiler have been updated to work
with the new representation, drawing inspiration from the term-level
pipeline where appropriate. For example,
ppr_infix_ty <=> ppr_infix_expr
get_tyop <=> get_op
lookupTypeFixityRn <=> lookupExprFixityRn
(the latter is factored out from rnExpr)
Test cases: T11107 T17865
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5b6757d7 by mangoiv at 2026-03-27T17:23:19-04:00
ci: build i386 non-validate for deb12
This is a small fix that will unlock ghcup metadata to run, i386 debian
12 was missing as a job.
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cf942119 by Cheng Shao at 2026-03-30T15:24:37-04:00
ghc-boot: remove unused SizedSeq instances and functions
This commit removes unused `SizedSeq` instances and functions, only
keeping the bits we need for hpc tick sequence for now.
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22c5b7cc by Cheng Shao at 2026-03-30T15:24:38-04:00
ghci: remove unused GHCi.BinaryArray
This patch removes the unused `GHCi.BinaryArray` module from `ghci`.
Closes #27108.
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77abb4ab by Cheng Shao at 2026-03-30T15:25:21-04:00
testsuite: mark T17912 as fragile on Windows
T17912 is still fragile on Windows, it sometimes unexpectedly pass in
CI. This especially strains our already scarce Windows CI runner
resources. Mark it as fragile on Windows for the time being.
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d741a6cc by Andreas Klebinger at 2026-03-31T04:39:33-04:00
Bump minimum shake version for hadrian.
We also add the shake version we want to stack.yaml
Fixes #26884
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5e556f9e by Vladislav Zavialov at 2026-03-31T04:40:16-04:00
Status check for the HsType~HsExpr refactoring (#25121)
Add a test case to track the status of a refactoring project within GHC
whose goal is to arrive at the following declaration:
type HsType = HsExpr
The rationale for this is to increase code reuse between the term- and
type-level code in the compiler front-end (AST, parser, renamer, type checker).
The status report is saved to testsuite/tests/ghc-api/T25121_status.stdout
and provides useful insights into what needs to happen to make progress on
the ticket.
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acffb1b1 by fendor at 2026-03-31T04:41:02-04:00
Extract Binary instances to `GHC.ByteCode.Binary`
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e2ea8e25 by fendor at 2026-03-31T04:41:02-04:00
Add `seqNonEmpty` for evaluating `NonEmpty a`
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048b00b7 by fendor at 2026-03-31T04:41:02-04:00
Record `LinkableUsage` instead of `Linkable` in `LoaderState`
Retaining a ByteCode `Linkable` after it has been loaded retains its
`UnlinkedBCO`, keeping it alive for the remainder of the program.
This starts accumulating a lot of `UnlinkedBCO` and memory over time.
However, the `Linkable` is merely used to later record its usage in
`mkObjectUsage`, which is used for recompilation checking.
However, this is incorrect, as the interface file and bytecode objects
could be in different states, e.g. the interface changes, but the
bytecode library hasn't changed so we don't need to recompile and vice
versa.
By computing a `Fingerprint` for the `ModuleByteCode`, and recording it
in the `LinkableUsage`, we know precisely whether the `ByteCode` object
on disk is outdated.
Thus, parts of this commit just makes sure that we efficiently compute a
`Fingerprint` for `ModuleByteCode` and store it in the on-disk
representation of `ModuleByteCode`.
We change the `LoaderState` to retain `LinkableUsage`, which is smaller
representation of a `Linkable`. This allows us to free the unneeded
fields of `Linkable` after linking them.
We declare the following memory invariants that this commit implements:
* No `LinkablePart` should be retained from `LoaderState`.
* `Linkable`s should be unloaded after they have been loaded.
These invariants are unfortunately tricky to automatically uphold, so we
are simply documenting our assumptions for now.
We introduce the `linkable-space` test which makes sure that after
loading, no `DotGBC` or `UnlinkedBCO` is retained.
-------------------------
Metric Increase:
MultiLayerModulesTH_OneShot
-------------------------
We allocate a bit more, but the peak number of bytes doesn't change.
While a bit unfortunate, accepting the metric increase.
We add multiple new performance measurements where we were able to
observe the desired memory invariants. Further, we add regression tests
to validate that the recompilation checker behaves more correct than
before.
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2d1c1997 by Simon Jakobi at 2026-03-31T04:41:46-04:00
Eliminate dictionary-passing in ListMap operations
Mark the ListMap helpers 'INLINABLE' so importing modules can specialise
the 'TrieMap (ListMap m)' methods and avoid recursive dictionary-passing.
See Note [Making ListMap operations specialisable].
Fixes #27097
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ed2c6570 by Cheng Shao at 2026-03-31T04:42:33-04:00
testsuite: fix testdir cleanup logic on Windows
testdir cleanup is unreliable on Windows (#13162) and despite existing
hacks in the driver, new failure mode has occurred. This patch makes
it print the warning and carry on when failed to clean up a testdir,
instead of reporting a spurious framework failure. See added comment
for detailed explanation.
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d9388e29 by Simon Jakobi at 2026-03-31T13:14:59-04:00
Add regression test for #18177
Closes #18177.
Assisted-by: Codex
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6a10045c by mangoiv at 2026-03-31T13:15:43-04:00
ci: allow metric decrease for two tests on i386
There has been a nightly failure on i386 due to a compiler runtime
improvement on i386 debian 12. We allow that.
Metric Decrease (test_env='i386-linux-deb12'):
T12707 T8095
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7fbb4fcb by Rodrigo Mesquita at 2026-04-01T12:16:33+00:00
Bump default language edition to GHC2024
As per the accepted ghc-proposal#632
Fixes #26039
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5ae43275 by Peng Fan at 2026-04-01T19:01:06-04:00
NCG/LA64: add cmpxchg and xchg primops
And append some new instructions for LA664 uarch.
Apply fix to cmpxchg-prim by Andreas Klebinger.
Suggestions in https://gitlab.haskell.org/ghc/ghc/-/merge_requests/15515
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8f95534a by Duncan Coutts at 2026-04-01T19:01:52-04:00
Remove signal-based ticker implementations
Fixes issue #27073
All supported platforms should work with the pthreads + nanosleep based
ticker implementation. This avoids all the problems with using signals.
In practice, all supported platforms were probably using the non-signal
tickers already, which is probably why we do not get lots of reports
about deadlocks and other weirdness: we were definately using functions
that are not async signal safe in the tick handler (such as fflush to
flussh the eventlog).
Only Solaris was explicitly using the timer_create ticker impl, and even
Solaris could probably use the pthreads one (if anyone cared: Solaris is
no longer a Teir 3 supported platform).
Plausibly the only supported platform that this will change will be AIX,
which should now use the pthreads impl.
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51b32b0d by Duncan Coutts at 2026-04-01T19:01:52-04:00
Tidy up some timer/ticker comments elsewhere
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7562bcd7 by Duncan Coutts at 2026-04-01T19:01:52-04:00
Remove now-unused install_vtalrm_handler
Support function used by both of the signal-based ticker
implementations.
- - - - -
6da127c7 by Duncan Coutts at 2026-04-01T19:01:52-04:00
No longer probe for timer_create in rts/configure
It was only used by the TimerCreate.c ticker impl.
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3fd490fa by Duncan Coutts at 2026-04-01T19:01:53-04:00
Note that rtsTimerSignal is deprecated.
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63099b0f by Simon Jakobi at 2026-04-01T19:02:39-04:00
Add perf test for #13960
Closes #13960.
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d13fbb72 by Joseph Fourment at 2026-04-02T13:15:10+01:00
Add type-lets into Core
The plan for #20264 is to introduce let-bound types to have observable sharing in types.
To avoid the need to carry an environment when dealing with occurrences of these type variables,
we embed the types they're bound to (if any) in a `tv_unfolding :: Maybe Type` attribute.
This way, one can look through let-bound type variables using `coreView` and friends.
In particular, definitional equality looks through unfoldings.
simple-opt: don't inline type-lets
specialise: fix type-lets in DFun unfoldings
During specialisation, a dictionary being specialised gets a new unfolding by turning
`DFun \ bndrs -> MkD @<T1> ... @<Tm> <op1> ... <opn>` into
`DFun \ spec_bndrs -> MkD @((\ bndrs -> TYPE: <T1>) spec_args) ... ((\ bndrs -> <opn>) spec_args)`
which in turns gets beta-reduced into
`DFun \ spec_bndrs -> MkD (let { bndrs = spec_args } in TYPE: <T1>) ... (let { bndrs = spec_args } in <opn>)`.
Previously, such let binders would immediately be substituted into the type so it didn't cause any issue,
but now we want to avoid inlining.
Arguments of the form `let { bndrs = spec_args } in TYPE: <T1>` are not considered as type arguments since they're
not of the canonical form `TYPE: something`.
This commit restores the previous behavior of substituting the specialised type arguments.
Alternatively, we could attach some floated type bindings to `DFun`s.
occur-anal: implement occurence analysis for type variables
In order to find out let-bound type variables that are used only once, in the hope of inlining them,
we need to track type variables as well in the occurrence analiser. Just like Id's, we attach an
`OccInfo` to each (immutable) type variable, and we walk into types and coercions to accurately gather
occurrences.
simplifier: don't inline type-lets
Keep propagating type-lets further down the pipeline, in the simplifier.
We also update CallArity, CprAnal, DmdAnal, WorkWrap, and Specialise to ignore type-lets.
prep: make type-lets pass through CorePrep
As a first attempt, ignore type-lets in CorePrep to avoid crashes.
However, this is not enough: CorePrep also does some let-floating.
If we don't float type-lets along with value-level let-bindings,
the latter can float out of the scope of a type variable in use.
simple-opt: fix simple_type_bind
Also:
- Inline small types using a new typeIsSmallEnoughToInline predicate
- Inline single-occurrence variables
simple-opt: make beta-reduction use simple_bind_type
iface: add IfaceTypeLetBndr to represent non-top-level type-let binders
IfaceLetBndr isn't fit to represent type-let binders, as it includes a
bunch of vacuous flags for Ids only.
Instead of putting squares in circles, I added a new constructor for type binders.
The downside is that it breaks existing iface files, so since we can't bootstrap
yet so we have to bootstrap a cherry-picked branch and then checkout again to build
with --freeze1.
To avoid similar issues in the future, IfaceTyVarInfoItem serialises with a tag
despite there being only one constructor for now.
dmd-anal: prefix unused variable with _ to avoid warning
type: inline unfoldView in sORTKind_maybe
tidy: deal with type-lets
notes: add Note [Type and coercion lets]
notes: update Note [Comparing nullary type synonyms] to account for type variables
While updating backlinks, I noticed the optimisation for type variables
could be performed in more places.
simplifier: inline single-occurring type-lets
cleanup: remove NOINLINE on tyVarOccInfo
Wibbles
Wibbles
Progress
Progress
More progress
Progress
...doesn't compile though
Mostly working now
Aggressively create type-lets
more progress
More progress
Temp debug printing
Remove bogus assert
Fix anoher couple of bugs
in SimpleOpt and exprIsTrivial
Improve zonking of foreign decls to avoid TcTyVars escaping
Wibbles
Some small wibbles
Improvements
Rmmove trace
Wibbles
Use lambda, not let, in WorkWrap
Using type let did not work right with type lets and shadowing
Requires Lint to be OK join points under beta redexes -- but it is!
Needs better documentation
Wibbles
More improvements
More improvements
* Less cloning in SpecConstr
* Lint checks RULES for imported binders
Comments only
Wibble
Wibbles
Wibbles
.. getting Lint errors when compiling GHC.Internal.Classes
Wibbles
More improvements
..now getting to the back end an interface file generation
Wibbles
Wibble unsed var
Missing case in tyThingEntityInfo
Add IfaceExtTyVar
Wibbles
Start to make OccAnal count TyCoVars properly [skip ci]
Proper occurrence analysis for TyCoVars
Wibble imports
Wibble imports again
Fix two tricky buglets
More small fixes
Add missing mkAbsCoreApps
...which caused bad Lint errors
More wibbles
More wibbles exp around mkPolyAbsLams
- - - - -
9516306f by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Make it compile again
- - - - -
933ed84d by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Simplify mkcoreAbsLams a bit
..Needs documentation
- - - - -
3222b80d by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Fix build
Several important fixes, need better docs
- - - - -
56631b93 by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Wibbles
- - - - -
fdaccd15 by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Make it compile
- - - - -
2e5dd1a6 by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Improve Lint error message slightly
- - - - -
07369af0 by Simon Peyton Jones at 2026-04-02T13:15:10+01:00
Wibble lint rules
- - - - -
64410771 by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Wibbles
- - - - -
55d331bf by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Wibbles
- - - - -
52374d32 by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Expand tyvars in Specialise
Pretty important!
- - - - -
57180f5a by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Comments only
- - - - -
b73bdbee by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
More wibbles
* `bindAuxiliaryTyVars` in Specialise
* `trivial_expr_fold` needs to accept big coercions in CoreToStg
because the binder-swap can duplicate big coercions (boo)
Plus renaming in Specialise
- - - - -
159fe292 by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Onward
- - - - -
060c89db by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
More wibbles
- - - - -
78551299 by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Wibbles
- - - - -
8c24c9de by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Wibbles
- - - - -
3e722c5b by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Get the types right in Prep
- - - - -
e90ad935 by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Weaken Lint invariant
Don't insist that an occurrence has syntactially the same type as the
binder. This is hard to ensure in `mkPolyAbsLams`. I tried a
shadowing x=x binding, but that didn't quite work (when compling
cabal) and maybe it is not necessary anyway.
- - - - -
90f6fcb8 by Simon Peyton Jones at 2026-04-02T13:15:11+01:00
Comments only
- - - - -
1090 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/flake.lock
- .gitlab/generate-ci/gen_ci.hs
- + .gitlab/issue_templates/release_tracking.md
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Utils.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- + compiler/GHC/ByteCode/Binary.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- + compiler/GHC/ByteCode/Recomp/Binary.hs
- compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Type.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/AArch64/Regs.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/CmmToAsm/LA64/Regs.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/PPC/Regs.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/RV64/Ppr.hs
- compiler/GHC/CmmToAsm/RV64/Regs.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToAsm/X86/Regs.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Config.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/CmmToLlvm/Mangler.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion/Axiom.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/LateCC/TopLevelBinds.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CSE.hs
- compiler/GHC/Core/Opt/CallArity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Exitify.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- + compiler/GHC/Core/Opt/Range.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Monad.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Opt/WorkWrap.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/Seq.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/Tidy.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/TyCo/Ppr.hs-boot
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/AddImplicitBinds.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/TrieMap.hs
- compiler/GHC/Driver/Config/CmmToLlvm.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Hooks.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Pmc/Utils.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/HsToCore/Utils.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Types.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Types.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Linker/ByteCode.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/PostProcess.hs
- + compiler/GHC/Platform/Tag.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Fixity.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Runtime/Interpreter/Init.hs
- compiler/GHC/Runtime/Interpreter/JS.hs
- compiler/GHC/Runtime/Interpreter/Types.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm/Closure.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/Utils.hs
- compiler/GHC/StgToJS/Literal.hs
- compiler/GHC/StgToJS/Object.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Infer.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/Solver/Rewrite.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Build.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/BasicTypes.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Id.hs
- compiler/GHC/Types/Id/Info.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Literal.hs
- + compiler/GHC/Types/Literal/Floating.hs
- compiler/GHC/Types/RepType.hs
- compiler/GHC/Types/TyThing.hs
- compiler/GHC/Types/TypeEnv.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Unit/Home/ModInfo.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/Location.hs
- compiler/GHC/Unit/Module/Status.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Error.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/GHC/Utils/Trace.hs
- compiler/Language/Haskell/Syntax/Decls/Foreign.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/Type.hs
- compiler/ghc.cabal.in
- configure.ac
- distrib/configure.ac.in
- docs/users_guide/9.16.1-notes.rst
- docs/users_guide/exts/control.rst
- docs/users_guide/exts/pragmas.rst
- docs/users_guide/exts/recursive_do.rst
- docs/users_guide/exts/required_type_arguments.rst
- docs/users_guide/exts/rewrite_rules.rst
- docs/users_guide/ghci.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/utils.py
- ghc/GHCi/Leak.hs
- ghc/GHCi/UI.hs
- ghc/Main.hs
- hadrian/README.md
- hadrian/bootstrap/generate_bootstrap_plans
- hadrian/bootstrap/plan-9_10_1.json
- hadrian/bootstrap/plan-9_10_2.json
- + hadrian/bootstrap/plan-9_10_3.json
- hadrian/bootstrap/plan-9_12_1.json
- hadrian/bootstrap/plan-9_12_2.json
- + hadrian/bootstrap/plan-9_14_1.json
- hadrian/bootstrap/plan-bootstrap-9_10_1.json
- hadrian/bootstrap/plan-bootstrap-9_10_2.json
- + hadrian/bootstrap/plan-bootstrap-9_10_3.json
- hadrian/bootstrap/plan-bootstrap-9_12_1.json
- hadrian/bootstrap/plan-bootstrap-9_12_2.json
- + hadrian/bootstrap/plan-bootstrap-9_14_1.json
- hadrian/build-cabal
- hadrian/cabal.project
- hadrian/doc/flavours.md
- hadrian/hadrian.cabal
- hadrian/src/CommandLine.hs
- hadrian/src/Main.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/GenPrimopCode.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Default.hs
- − hadrian/src/Settings/Flavours/Benchmark.hs
- hadrian/src/Settings/Flavours/Development.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Quick.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Quickest.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/stack.yaml
- libraries/base/changelog.md
- libraries/base/src/Control/Applicative.hs
- libraries/base/src/Data/Char.hs
- libraries/base/src/Data/Eq.hs
- libraries/base/src/Data/Semigroup.hs
- libraries/base/src/GHC/Base.hs
- libraries/base/src/GHC/Fingerprint.hs
- libraries/base/src/GHC/ResponseFile.hs
- libraries/base/src/GHC/Stats.hs
- libraries/base/src/GHC/Unicode.hs
- libraries/base/src/GHC/Weak.hs
- libraries/base/src/GHC/Weak/Finalize.hs
- − libraries/base/src/GHC/Weak/Finalizehs
- libraries/base/src/Prelude.hs
- libraries/base/src/System/Exit.hs
- libraries/base/src/System/IO/OS.hs
- libraries/base/src/System/Info.hs
- libraries/base/src/System/Mem/Weak.hs
- libraries/base/tests/IO/T17912.hs
- libraries/base/tests/IO/T18832.hs
- libraries/base/tests/IO/all.T
- libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs
- libraries/ghc-boot/GHC/Data/SizedSeq.hs
- compiler/GHC/Data/SmallArray.hs → libraries/ghc-boot/GHC/Data/SmallArray.hs
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-experimental/ghc-experimental.cabal.in
- libraries/ghc-experimental/src/GHC/Profiling/Eras.hs
- + libraries/ghc-experimental/src/GHC/Stack/Decode/Experimental.hs
- libraries/ghc-heap/GHC/Exts/Heap/Closures.hs
- libraries/ghc-internal/CHANGELOG.md
- libraries/ghc-internal/cbits/Stack.cmm
- libraries/ghc-internal/codepages/MakeTable.hs
- libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs
- libraries/ghc-internal/src/GHC/Internal/Arr.hs
- libraries/ghc-internal/src/GHC/Internal/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Bits.hs
- libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs
- − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Char.hs
- libraries/ghc-internal/src/GHC/Internal/Clock.hsc
- libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs
- − libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs
- libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc
- libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Data.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Either.hs
- − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Function.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Utils.hs
- libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs
- libraries/ghc-internal/src/GHC/Internal/Data/List.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs
- libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Ord.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Proxy.hs
- libraries/ghc-internal/src/GHC/Internal/Data/STRef.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Data/String.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Coercion.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Equality.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Ord.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Typeable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Unique.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Version.hs
- − libraries/ghc-internal/src/GHC/Internal/Data/Version.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs
- libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Encoding/UTF8.hs
- libraries/ghc-internal/src/GHC/Internal/Enum.hs
- libraries/ghc-internal/src/GHC/Internal/Environment.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Array.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Control.hs
- libraries/ghc-internal/src/GHC/Internal/Event/EPoll.hsc
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The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d561a3188610076b56d6f817a91873…
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Simon Peyton Jones pushed new branch wip/T23150 at Glasgow Haskell Compiler / GHC
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Simon Peyton Jones pushed to branch wip/T24466 at Glasgow Haskell Compiler / GHC
Commits:
f4d80f08 by Simon Peyton Jones at 2026-08-10T08:30:15+01:00
Wibble comments
- - - - -
1 changed file:
- compiler/GHC/Core/Opt/FloatIn.hs
Changes:
=====================================
compiler/GHC/Core/Opt/FloatIn.hs
=====================================
@@ -860,6 +860,9 @@ sepBindsByDropPoint platform is_case floaters here_fvs fork_fvs
n_used_alts = count id used_in_flags -- returns number of Trues in list.
+ -- A demanded thunk like let x = factorial y in ... could be pushed, but
+ -- it'll turn into a case-expression so it doesn't allocate directly.
+ -- So I am experimenting with making it stay put.
strict_thunk = case bind of
FloatCase{} -> False
FloatLet (Rec {}) -> False
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