[Git][ghc/ghc][wip/romes/pprInstrH] 963 commits: One-shot Haddock
by Andreas Klebinger (＠AndreasK) 21 Apr '25
by Andreas Klebinger (＠AndreasK) 21 Apr '25
21 Apr '25
Andreas Klebinger pushed to branch wip/romes/pprInstrH at Glasgow Haskell Compiler / GHC
Commits:
96acf823 by Sjoerd Visscher at 2024-07-09T06:16:14-04:00
One-shot Haddock
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74ec4c06 by Sjoerd Visscher at 2024-07-09T06:16:14-04:00
Remove haddock-stdout test option
Superseded by output handling of Hadrian
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ed8a8f0b by Rodrigo Mesquita at 2024-07-09T06:16:51-04:00
ghc-boot: Relax Cabal bound
Fixes #25013
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3f9548fe by Matthew Pickering at 2024-07-09T06:17:36-04:00
ci: Unset ALEX/HAPPY variables when testing bootstrap jobs
Ticket #24826 reports a regression in 9.10.1 when building from a source
distribution. This patch is an attempt to reproduce the issue on CI by
more aggressively removing `alex` and `happy` from the environment.
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aba2c9d4 by Andrea Bedini at 2024-07-09T06:17:36-04:00
hadrian: Ignore build-tool-depends fields in cabal files
hadrian does not utilise the build-tool-depends fields in cabal files
and their presence can cause issues when building source distribution
(see #24826)
Ideally Cabal would support building "full" source distributions which
would remove the need for workarounds in hadrian but for now we can
patch the build-tool-depends out of the cabal files.
Fixes #24826
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12bb9e7b by Matthew Pickering at 2024-07-09T06:18:12-04:00
testsuite: Don't attempt to link when checking whether a way is supported
It is sufficient to check that the simple test file compiles as it will
fail if there are not the relevant library files for the requested way.
If you break a way so badly that even a simple executable fails to link
(as I did for profiled dynamic way), it will just mean the tests for
that way are skipped on CI rather than displayed.
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46ec0a8e by Torsten Schmits at 2024-07-09T13:37:02+02:00
Improve docs for NondecreasingIndentation
The text stated that this affects indentation of layouts nested in do
expressions, while it actually affects that of do layouts nested in any
other.
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dddc9dff by Zubin Duggal at 2024-07-12T11:41:24-04:00
compiler: Fingerprint -fwrite-if-simplified-core
We need to recompile if this flag is changed because later modules might depend on the
simplified core for this module if -fprefer-bytecode is enabled.
Fixes #24656
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145a6477 by Matthew Pickering at 2024-07-12T11:42:00-04:00
Add support for building profiled dynamic way
The main payload of this change is to hadrian.
* Default settings will produced dynamic profiled objects
* `-fexternal-interpreter` is turned on in some situations when there is
an incompatibility between host GHC and the way attempting to be
built.
* Very few changes actually needed to GHC
There are also necessary changes to the bootstrap plans to work with the
vendored Cabal dependency. These changes should ideally be reverted by
the next GHC release.
In hadrian support is added for building profiled dynamic libraries
(nothing too exciting to see there)
Updates hadrian to use a vendored Cabal submodule, it is important that
we replace this usage with a released version of Cabal library before
the 9.12 release.
Fixes #21594
-------------------------
Metric Increase:
libdir
-------------------------
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414a6950 by Matthew Pickering at 2024-07-12T11:42:00-04:00
testsuite: Make find_so regex more precise
The hash contains lowercase [a-z0-9] and crucially not _p which meant we
sometimes matched on `libHS.._p` profiled shared libraries rather than
the normal shared library.
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dee035bf by Alex Mason at 2024-07-12T11:42:41-04:00
ncg(aarch64): Add fsqrt instruction, byteSwap primitives [#24956]
Implements the FSQRT machop using native assembly rather than a C call.
Implements MO_BSwap by producing assembly to do the byte swapping
instead of producing a foreign call a C function.
In `tar`, the hot loop for `deserialise` got almost 4x faster by
avoiding the foreign call which caused spilling live variables to the
stack -- this means the loop did 4x more memory read/writing than
necessary in that particular case!
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5104ee61 by Sylvain Henry at 2024-07-12T11:43:23-04:00
Linker: use m32 allocator for sections when NEED_PLT (#24432)
Use M32 allocator to avoid fragmentation when allocating ELF sections.
We already did this when NEED_PLT was undefined. Failing to do this led
to relocations impossible to fulfil (#24432).
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52d66984 by Sylvain Henry at 2024-07-12T11:43:23-04:00
RTS: allow M32 allocation outside of 4GB range when assuming -fPIC
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c34fef56 by Sylvain Henry at 2024-07-12T11:43:23-04:00
Linker: fix stub offset
Remove unjustified +8 offset that leads to memory corruption (cf
discussion in #24432).
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280e4bf5 by Simon Peyton Jones at 2024-07-12T11:43:59-04:00
Make type-equality on synonyms a bit faster
This MR make equality fast for (S tys1 `eqType` S tys2),
where S is a non-forgetful type synonym.
It doesn't affect compile-time allocation much, but then comparison doesn't
allocate anyway. But it seems like a Good Thing anyway.
See Note [Comparing type synonyms] in GHC.Core.TyCo.Compare
and Note [Forgetful type synonyms] in GHC.Core.TyCon
Addresses #25009.
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cb83c347 by Alan Zimmerman at 2024-07-12T11:44:35-04:00
EPA: Bring back SrcSpan in EpaDelta
When processing files in ghc-exactprint, the usual workflow is to
first normalise it with makeDeltaAst, and then operate on it.
But we need the original locations to operate on it, in terms of
finding things.
So restore the original SrcSpan for reference in EpaDelta
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7bcda869 by Matthew Pickering at 2024-07-12T11:45:11-04:00
Update alpine release job to 3.20
alpine 3.20 was recently released and uses a new python and sphinx
toolchain which could be useful to test.
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43aa99b8 by Matthew Pickering at 2024-07-12T11:45:11-04:00
testsuite: workaround bug in python-3.12
There is some unexplained change to binding behaviour in python-3.12
which requires moving this import from the top-level into the scope of
the function.
I didn't feel any particular desire to do a deep investigation as to why
this changed as the code works when modified like this. No one in the
python IRC channel seemed to know what the problem was.
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e3914028 by Adam Sandberg Ericsson at 2024-07-12T11:45:47-04:00
initialise mmap_32bit_base during RTS startup #24847
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86b8ecee by Hécate Kleidukos at 2024-07-12T11:46:27-04:00
haddock: Only fetch supported languages and extensions once per Interface list
This reduces the number of operations done on each Interface, because
supported languages and extensions are determined from architecture and
operating system of the build host. This information remains stable
across Interfaces, and as such doesn not need to be recovered for each
Interface.
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4f85366f by sheaf at 2024-07-13T05:58:14-04:00
Testsuite: use py-cpuinfo to compute CPU features
This replaces the rather hacky logic we had in place for checking
CPU features. In particular, this means that feature availability now
works properly on Windows.
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41f1354d by Matthew Pickering at 2024-07-13T05:58:51-04:00
testsuite: Replace $CC with $TEST_CC
The TEST_CC variable should be set based on the test compiler, which may
be different to the compiler which is set to CC on your system (for
example when cross compiling).
Fixes #24946
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572fbc44 by sheaf at 2024-07-15T08:30:32-04:00
isIrrefutableHsPat: consider COMPLETE pragmas
This patch ensures we taken into account COMPLETE pragmas when we
compute whether a pattern is irrefutable. In particular, if a pattern
synonym is the sole member of a COMPLETE pragma (without a result TyCon),
then we consider a pattern match on that pattern synonym to be irrefutable.
This affects the desugaring of do blocks, as it ensures we don't use
a "fail" operation.
Fixes #15681 #16618 #22004
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84dadea9 by Zubin Duggal at 2024-07-15T08:31:09-04:00
haddock: Handle non-hs files, so that haddock can generate documentation for modules with
foreign imports and template haskell.
Fixes #24964
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0b4ff9fa by Zubin Duggal at 2024-07-15T12:12:30-04:00
haddock: Keep track of warnings/deprecations from dependent packages in `InstalledInterface`
and use this to propagate these on items re-exported from dependent packages.
Fixes #25037
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b8b4b212 by Zubin Duggal at 2024-07-15T12:12:30-04:00
haddock: Keep track of instance source locations in `InstalledInterface` and use this to add
source locations on out of package instances
Fixes #24929
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559a7a7c by Matthew Pickering at 2024-07-15T12:13:05-04:00
ci: Refactor job_groups definition, split up by platform
The groups are now split up so it's easier to see which jobs are
generated for each platform
No change in behaviour, just refactoring.
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20383006 by Matthew Pickering at 2024-07-16T11:48:25+01:00
ci: Replace debian 10 with debian 12 on validation jobs
Since debian 10 is now EOL we migrate onwards to debian 12 as the basis
for most platform independent validation jobs.
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12d3b66c by Matthew Pickering at 2024-07-17T13:22:37-04:00
ghcup-metadata: Fix use of arch argument
The arch argument was ignored when making the jobname, which lead to
failures when generating metadata for the alpine_3_18-aarch64 bindist.
Fixes #25089
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bace981e by Matthew Pickering at 2024-07-19T10:14:02-04:00
testsuite: Delay querying ghc-pkg to find .so dirs until test is run
The tests which relied on find_so would fail when `test` was run
before the tree was built. This was because `find_so` was evaluated too
eagerly.
We can fix this by waiting to query the location of the libraries until
after the compiler has built them.
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478de1ab by Torsten Schmits at 2024-07-19T10:14:37-04:00
Add `complete` pragmas for backwards compat patsyns `ModLocation` and `ModIface`
!12347 and !12582 introduced breaking changes to these two constructors
and mitigated that with pattern synonyms.
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b57792a8 by Matthew Pickering at 2024-07-19T10:15:13-04:00
ci: Fix ghcup-metadata generation (again)
I made some mistakes in 203830065b81fe29003c1640a354f11661ffc604
* Syntax error
* The aarch-deb11 bindist doesn't exist
I tested against the latest nightly pipeline locally:
```
nix run .gitlab/generate-ci#generate-job-metadata
nix shell -f .gitlab/rel_eng/ -c ghcup-metadata --pipeline-id 98286 --version 9.11.20240715 --fragment --date 2024-07-17 --metadata=/tmp/meta
```
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1fa35b64 by Andreas Klebinger at 2024-07-19T17:35:20+02:00
Revert "Allow non-absolute values for bootstrap GHC variable"
This broke configure in subtle ways resulting in #25076 where hadrian
didn't end up the boot compiler it was configured to use.
This reverts commit 209d09f52363b261b900cf042934ae1e81e2caa7.
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55117e13 by Simon Peyton Jones at 2024-07-24T02:41:12-04:00
Fix bad bug in mkSynonymTyCon, re forgetfulness
As #25094 showed, the previous tests for forgetfulness was
plain wrong, when there was a forgetful synonym in the RHS
of a synonym.
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a8362630 by Sergey Vinokurov at 2024-07-24T12:22:45-04:00
Define Eq1, Ord1, Show1 and Read1 instances for basic Generic representation types
This way the Generically1 newtype could be used to derive Eq1 and Ord1
for user types with DerivingVia.
The CLC proposal is https://github.com/haskell/core-libraries-committee/issues/273.
The GHC issue is https://gitlab.haskell.org/ghc/ghc/-/issues/24312.
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de5d9852 by Simon Peyton Jones at 2024-07-24T12:23:22-04:00
Address #25055, by disabling case-of-runRW# in Gentle phase
See Note [Case-of-case and full laziness]
in GHC.Driver.Config.Core.Opt.Simplify
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3f89ab92 by Andreas Klebinger at 2024-07-25T14:12:54+02:00
Fix -freg-graphs for FP and AARch64 NCG (#24941).
It seems we reserve 8 registers instead of four for global regs
based on the layout in Note [AArch64 Register assignments].
I'm not sure it's neccesary, but for now we just accept this state of
affairs and simple update -fregs-graph to account for this.
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f6b4c1c9 by Simon Peyton Jones at 2024-07-27T09:45:44-04:00
Fix nasty bug in occurrence analyser
As #25096 showed, the occurrence analyser was getting one-shot info
flat out wrong.
This commit does two things:
* It fixes the bug and actually makes the code a bit tidier too.
The work is done in the new function
GHC.Core.Opt.OccurAnal.mkRhsOccEnv,
especially the bit that prepares the `occ_one_shots` for the RHS.
See Note [The OccEnv for a right hand side]
* When floating out a binding we must be conservative about one-shot
info. But we were zapping the entire demand info, whereas we only
really need zap the /top level/ cardinality.
See Note [Floatifying demand info when floating]
in GHC.Core.Opt.SetLevels
For some reason there is a 2.2% improvement in compile-time allocation
for CoOpt_Read. Otherwise nickels and dimes.
Metric Decrease:
CoOpt_Read
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646ee207 by Torsten Schmits at 2024-07-27T09:46:20-04:00
add missing cell in flavours table
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ec2eafdb by Ben Gamari at 2024-07-28T20:51:12+02:00
users-guide: Drop mention of dead __PARALLEL_HASKELL__ macro
This has not existed for over a decade.
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e2f2a56e by Arnaud Spiwack at 2024-07-28T22:21:07-04:00
Add tests for 25081
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23f50640 by Arnaud Spiwack at 2024-07-28T22:21:07-04:00
Scale multiplicity in list comprehension
Fixes #25081
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d2648289 by romes at 2024-07-30T01:38:12-04:00
TTG HsCmdArrForm: use Fixity via extension point
Also migrate Fixity from GHC.Hs to Language.Haskell.Syntax
since it no longer uses any GHC-specific data types.
Fixed arrow desugaring bug. (This was dead code before.)
Remove mkOpFormRn, it is also dead code, only used in the arrow
desugaring now removed.
Co-authored-by: Fabian Kirchner <kirchner(a)posteo.de>
Co-authored-by: Alan Zimmerman <alan.zimm(a)gmail.com>
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e258ad54 by Matthew Pickering at 2024-07-30T01:38:48-04:00
ghcup-metadata: More metadata fixes
* Incorrect version range on the alpine bindists
* Missing underscore in "unknown_versioning"
Fixes #25119
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72b54c07 by Rodrigo Mesquita at 2024-08-01T00:47:29-04:00
Deriving-via one-shot strict state Monad instances
A small refactor to use deriving via GHC.Utils.Monad.State.Strict
Monad instances for state Monads with unboxed/strict results which all
re-implemented the one-shot trick in the instance and used unboxed
tuples:
* CmmOptM in GHC.Cmm.GenericOpt
* RegM in GHC.CmmToAsm.Reg.Linear.State
* UniqSM in GHC.Types.Unique.Supply
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bfe4b3d3 by doyougnu at 2024-08-01T00:48:06-04:00
Rts linker: add case for pc-rel 64 relocation
part of the upstream haskell.nix patches
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5843c7e3 by doyougnu at 2024-08-01T00:48:42-04:00
RTS linker: aarch64: better debug information
Dump better debugging information when a symbol address is null.
Part of the haskell.nix patches upstream project
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
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c2e9c581 by Rodrigo Mesquita at 2024-08-01T00:49:18-04:00
base: Add haddocks to HasExceptionContext
Fixes #25091
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f954f428 by Sylvain Henry at 2024-08-01T00:49:59-04:00
Only lookup ghcversion.h file in the RTS include-dirs by default.
The code was introduced in 3549c952b535803270872adaf87262f2df0295a4.
It used `getPackageIncludePath` which name doesn't convey that it looks
into all include paths of the preload units too. So this behavior is
probably unintentional and it should be ok to change it.
Fix #25106
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951ce3d5 by Matthew Pickering at 2024-08-01T00:50:35-04:00
driver: Fix -Wmissing-home-modules when multiple units have the same module name
It was assumed that module names were unique but that isn't true with
multiple units.
The fix is quite simple, maintain a set of `(ModuleName, UnitId)` and
query that to see whether the module has been specified.
Fixes #25122
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bae1fea4 by sheaf at 2024-08-01T00:51:15-04:00
PMC: suggest in-scope COMPLETE sets when possible
This commit modifies GHC.HsToCore.Pmc.Solver.generateInhabitingPatterns
to prioritise reporting COMPLETE sets in which all of the ConLikes
are in scope. This avoids suggesting out of scope constructors
when displaying an incomplete pattern match warning, e.g. in
baz :: Ordering -> Int
baz = \case
EQ -> 5
we prefer:
Patterns of type 'Ordering' not matched:
LT
GT
over:
Patterns of type 'Ordering' not matched:
OutOfScope
Fixes #25115
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ff158fcd by Tommy Bidne at 2024-08-02T01:14:32+12:00
Print exception metadata in default handler
CLC proposals 231 and 261:
- Add exception type metadata to SomeException's displayException.
- Add "Exception" header to default exception handler.
See:
https://github.com/haskell/core-libraries-committee/issues/231
https://github.com/haskell/core-libraries-committee/issues/261
Update stm submodule for test fixes.
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8b2f70a2 by Andrei Borzenkov at 2024-08-01T23:00:46-04:00
Type syntax in expressions (#24159, #24572, #24226)
This patch extends the grammar of expressions with syntax that is
typically found only in types:
* function types (a -> b), (a ->. b), (a %m -> b)
* constrained types (ctx => t)
* forall-quantification (forall tvs. t)
The new forms are guarded behind the RequiredTypeArguments extension,
as specified in GHC Proposal #281. Examples:
{-# LANGUAGE RequiredTypeArguments #-}
e1 = f (Int -> String) -- function type
e2 = f (Int %1 -> String) -- linear function type
e3 = f (forall a. Bounded a => a) -- forall type, constraint
The GHC AST and the TH AST have been extended as follows:
syntax | HsExpr | TH.Exp
---------------+----------+--------------
a -> b | HsFunArr | ConE (->)
a %m -> b | HsFunArr | ConE FUN
ctx => t | HsQual | ConstrainedE
forall a. t | HsForAll | ForallE
forall a -> t | HsForAll | ForallVisE
Additionally, a new warning flag -Wview-pattern-signatures has been
introduced to aid with migration to the new precedence of (e -> p :: t).
Co-authored-by: Vladislav Zavialov <vlad.z.4096(a)gmail.com>
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66e7f57d by Brandon Chinn at 2024-08-01T21:50:58-07:00
Implement MultilineStrings (#24390)
This commit adds support for multiline strings, proposed at
https://github.com/ghc-proposals/ghc-proposals/pull/569.
Multiline strings can now be written as:
myString =
"""
this is a
multiline string
"""
The multiline string will have leading indentation stripped away.
Full details of this post-processing may be found at the new
GHC.Parser.String module.
In order to cleanly implement this and maximize reusability, I
broke out the lexing logic for strings out of Lexer.x into a
new GHC.Parser.String module, which lexes strings with any
provided "get next character" function. This also gave us the
opportunity to clean up this logic, and even optimize it a bit.
With this change, parsing string literals now takes 25% less
time and 25% less space.
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cf47b96f by Rodrigo Mesquita at 2024-08-03T05:59:40-04:00
hi: Stable sort avails
Sorting the Avails in DocStructures is required to produce fully
deterministic interface files in presence of re-exported modules.
Fixes #25104
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af2ae742 by M. Taimoor Zaeem at 2024-08-03T18:52:50+05:00
haddock: decrease margin on top of small headings
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a1e42e7a by Rodrigo Mesquita at 2024-08-05T21:03:04-04:00
hi: Deterministic ImportedMods in Usages
The `mi_usages` field of the interface files must use a deterministic
list of `Usage`s to guarantee a deterministic interface. However, this
list was, in its origins, constructed from a `ModuleEnv` which uses a
non-deterministic ordering that was leaking into the interface.
Specifically, ImportedMods = ModuleEnv ... would get converted to a list and
then passed to `mkUsageInfo` to construct the Usages.
The solution is simple. Back `ImportedMods` with a deterministic map.
`Map Module ...` is enough, since the Ord instance for `Module` already
uses a stable, deterministic, comparison.
Fixes #25131
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eb1cb536 by Serge S. Gulin at 2024-08-06T08:54:55+00:00
testsuite: extend size performance tests with gzip (fixes #25046)
The main purpose is to create tests for minimal app (hello world and its variations, i.e. unicode used) distribution size metric.
Many platforms support distribution in compressed form via gzip. It would be nice to collect information on how much size is taken by the executional bundle for each platform at minimal edge case.
2 groups of tests are added:
1. We extend javascript backend size tests with gzip-enabled versions for all cases where an optimizing compiler is used (for now it is google closure compiler).
2. We add trivial hello world tests with gzip-enabled versions for all other platforms at CI pipeline where no external optimizing compiler is used.
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d94410f8 by Rodrigo Mesquita at 2024-08-07T11:49:19-04:00
ghc-internal: @since for backtraceDesired
Fixes point 1 in #25052
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bfe600f5 by Rodrigo Mesquita at 2024-08-07T11:49:19-04:00
ghc-internal: No trailing whitespace in exceptions
Fixes #25052
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62650d9f by Andreas Klebinger at 2024-08-07T11:49:54-04:00
Add since annotation for -fkeep-auto-rules.
This partially addresses #25082.
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5f0e23fd by Andreas Klebinger at 2024-08-07T11:49:54-04:00
Mention `-fkeep-auto-rules` in release notes.
It was added earlier but hadn't appeared in any release notes yet.
Partially addresses #25082.
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7446a09a by Sylvain Henry at 2024-08-07T11:50:35-04:00
Cmm: don't perform unsound optimizations on 32-bit compiler hosts
- beef61351b240967b49169d27a9a19565cf3c4af enabled the use of
MO_Add/MO_Sub for 64-bit operations in the C and LLVM backends
- 6755d833af8c21bbad6585144b10e20ac4a0a1ab did the same for the x86 NCG
backend
However we store some literal values as `Int` in the compiler. As a
result, some Cmm optimizations transformed target 64-bit literals into
compiler `Int`. If the compiler is 32-bit, this leads to computing with
wrong literals (see #24893 and #24700).
This patch disables these Cmm optimizations for 32-bit compilers. This
is unsatisfying (optimizations shouldn't be compiler-word-size
dependent) but it fixes the bug and it makes the patch easy to backport.
A proper fix would be much more invasive but it shall be implemented in
the future.
Co-authored-by: amesgen <amesgen(a)amesgen.de>
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d59faaf2 by Vladislav Zavialov at 2024-08-07T11:51:11-04:00
docs: Update info on RequiredTypeArguments
Add a section on "types in terms" that were implemented in 8b2f70a202
and remove the now outdated suggestion of using `type` for them.
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39fd6714 by Sylvain Henry at 2024-08-07T11:51:52-04:00
JS: fix minor typo in base's jsbits
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e7764575 by Sylvain Henry at 2024-08-07T11:51:52-04:00
RTS: remove hack to force old cabal to build a library with only JS sources
Need to extend JSC externs with Emscripten RTS definitions to avoid
JSC_UNDEFINED_VARIABLE errors when linking without the emcc rts.
Fix #25138
Some recompilation avoidance tests now fail. This is tracked with the
other instances of this failure in #23013. My hunch is that they were
working by chance when we used the emcc linker.
Metric Decrease:
T24602_perf_size
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d1a40233 by Brandon Chinn at 2024-08-07T11:53:08-04:00
Support multiline strings in type literals (#25132)
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610840eb by Sylvain Henry at 2024-08-07T11:53:50-04:00
JS: fix callback documentation (#24377)
Fix #24377
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6ae4b76a by Zubin Duggal at 2024-08-13T13:36:57-04:00
haddock: Build haddock-api and haddock-library using hadrian
We build these two packages as regular boot library dependencies rather
than using the `in-ghc-tree` flag to include the source files into the haddock
executable.
The `in-ghc-tree` flag is moved into haddock-api to ensure that haddock built
from hackage can still find the location of the GHC bindist using `ghc-paths`.
Addresses #24834
This causes a metric decrease under non-release flavours because under these
flavours libraries are compiled with optimisation but executables are not.
Since we move the bulk of the code from the haddock executable to the
haddock-api library, we see a metric decrease on the validate flavours.
Metric Decrease:
haddock.Cabal
haddock.base
haddock.compiler
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51ffba5d by Arnaud Spiwack at 2024-08-13T13:37:50-04:00
Add an extension field to HsRecFields
This is the Right Thing to Do™. And it prepares for storing a
multiplicity coercion there.
First step of the plan outlined here and below
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/12947#note_573091
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4d2faeeb by Arnaud Spiwack at 2024-08-13T13:37:50-04:00
Add test for #24961
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623b4337 by Arnaud Spiwack at 2024-08-13T13:37:50-04:00
Ensures that omitted record fields in pattern have multiplicity Many
Omitted fields were simply ignored in the type checker and produced
incorrect Core code.
Fixes #24961
Metric Increase:
RecordUpdPerf
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c749bdfd by Sylvain Henry at 2024-08-13T13:38:41-04:00
AARCH64 linker: skip NONE relocations
This patch is part of the patches upstreamed from haskell.nix.
See https://github.com/input-output-hk/haskell.nix/pull/1960 for the
original report/patch.
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682a6a41 by Brandon Chinn at 2024-08-13T13:39:17-04:00
Support multiline strings in TH
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ee0a9c18 by Matthew Pickering at 2024-08-14T14:27:39-04:00
Extend -reexported-module flag to support module renaming
The -reexported-module flag now supports renaming -rexported-modules.
```
-rexported-module "A as B"
```
This feature is only relevant to multi-component sessions.
Fixes #25139
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e9496000 by Arnaud Spiwack at 2024-08-14T14:28:20-04:00
Don't restrict eta-reduction of linear functions
This commit simply removes code. All the supporting implementation has
been done as part of !12883.
Closes #25129
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2bb4156e by sheaf at 2024-08-14T14:28:56-04:00
Allow @ character in C labels
Generated symbol names can include the '@' character, for example when using
`__attribute__((vectorcall))`.
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7602ca23 by Sylvain Henry at 2024-08-14T14:29:36-04:00
Linker: replace blind tuple with a datatype + docs
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bdd77b9e by sheaf at 2024-08-16T12:47:11-04:00
isIrrefutableHsPat: look up ConLikes in the HscEnv
At GhcRn stage, in isIrrefutableHsPat we only looked up data constructors
in the RdrEnv, which meant that we lacked fallibility information for
out-of-scope constructors (which can arise from Template Haskell splices).
Instead, we use 'lookupGREInfo', which looks up the information in
the type environment. This was the correct function to call all along,
but was not used in 572fbc44 due to import cycle reasons. The appropriate
functions, 'irrefutableConLike{Rn,Tc}' have been moved to 'GHC.Rename.Env',
which avoids import cycles.
Fixes #25164
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4bee377c by Sylvain Henry at 2024-08-16T12:47:53-04:00
Linker: some refactoring to prepare for #24886
- Rename LoadedBCOs into LazyBCOs
- Bundle SptEntries with CompiledByteCode and removed [SptEntry] field
from the BCOs constructor
- Rename Linkable's LM constructor into Linkable: in the past we had LM
and LP for Module and Package, now we only have the former.
- Rename Unlinked into LinkablePart (and linkableUnlinked into
linkableParts)
- Use NonEmpty to encode invariant in Linkable's linkableParts type
- Add helpers: linkableLibs, linkableBCOs, etc.
- Add documentation
- Remove partial nameOfObject
- Rename nameOfObject_maybe into linkablePartPath
- Rename byteCodeOfObject into linkablePartAllBCOs.
- Refactor linkablePartAllBCOs to avoid a panic if a LazyBCO has a C
stub. Document the fact that LazyBCOs are returned in this case
(contrary to linkableBCOs which only returns non-lazy ones)
Refactoring done while trying to understand how to adapt the linker code
to support the JS backend too (cf #24886).
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fa0dbaca by Mario Blažević at 2024-08-17T03:31:32+00:00
Implements the Exportable Named Default proposal (#24305)
This squashed commit adds support for exportable named defaults, the accepted
GHC proposal at https://github.com/ghc-proposals/ghc-proposals/pull/409
The proposal extends the Haskell '98 declarations
default (Int, Double)
which were implicitly always applying to Num class alone, to allow specifying
an arbitrary single-parameter class:
default IsString (Text, String)
The effect of this declaration would be to eliminate the ambiguous type errors
around string literals when OverloadedStrings extension is active. The
declaration by itself has effect only in its module, so the proposal also adds
the ability to export class defaults:
module MyModule (default IsIstring)
Once the language extension is published and established, we can consider using
it in base and other libraries.
See Note [Named default declarations] in GHC.Tc.Gen.Default
for implementation details.
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1deba6b2 by Simon Peyton Jones at 2024-08-17T13:58:13-04:00
Make kick-out more selective
This MR revised the crucial kick-out criteria in the constraint solver.
Ticket #24984 showed an example in which
* We were kicking out unnecessarily
* That gave rise to extra work, of course
* But it /also/ led to exponentially-sized coercions due to lack
of sharing in coercions (something we want to fix separately #20264)
This MR sharpens up the kick-out criteria; specifially in (KK2) we look
only under type family applications if (fs>=fw).
This forced me to understand the existing kick-out story, and I ended
up rewriting many of the careful Notes in GHC.Tc.Solver.InertSet.
Especially look at the new `Note [The KickOut Criteria]`
The proof of termination is not air-tight, but it is better than before,
and both Richard and I think it's correct :-).
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88488847 by Cheng Shao at 2024-08-18T04:44:01+02:00
testsuite: remove undesired -fasm flag from test ways
This patch removes the -fasm flag from test ways, except ways like
optasm that explicitly state they are meant to be compiled with NCG
backend. Most test ways should use the default codegen backend, and
the precense of -fasm can cause stderr mismatches like this when GHC
is configured with the unregisterised backend:
```
--- /dev/null
+++ /tmp/ghctest-3hydwldj/test spaces/testsuite/tests/profiling/should_compile/prof-late-cc.run/prof-late-cc.comp.stderr.normalised
@@ -0,0 +1,2 @@
+when making flags consistent: warning: [GHC-74335] [-Winconsistent-flags (in -Wdefault)]
+ Target platform uses unregisterised ABI, so compiling via C
*** unexpected failure for prof-late-cc(prof_no_auto)
```
This has been breaking the wasm unreg nightly job since !12595 landed.
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3a145315 by Cheng Shao at 2024-08-18T13:05:45-04:00
ghci: fix isMinTTY.h casing for Windows targets
This commit fixes isMinTTY.h casing in isMinTTY.c that's compiled for
Windows targets. While this looks harmless given Windows filesystems
are case-insensitive by default, it does cause a compilation warning
with recent versions of clang, so we might as well fix the casing:
```
driver\ghci\isMinTTY.c:10:10: error:
warning: non-portable path to file '"isMinTTY.h"'; specified path differs in case from file name on disk [-Wnonportable-include-path]
|
10 | #include "isMINTTY.h"
| ^
#include "isMINTTY.h"
^~~~~~~~~~~~
"isMinTTY.h"
1 warning generated.
```
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5f972bfb by Zubin Duggal at 2024-08-21T03:18:15-04:00
compiler: Fix pretty printing of ticked prefix constructors (#24237)
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ef0a08e7 by Mike Pilgrem at 2024-08-21T03:18:57-04:00
Fix #15773 Clarify further -rtsopts 'defaults' in docs
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05a4be58 by Sebastian Graf at 2024-08-21T03:19:33-04:00
Improve efficiency of `assertError` (#24625)
... by moving `lazy` to the exception-throwing branch.
It's all documented in `Note [Strictness of assertError]`.
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c29b2b5a by sheaf at 2024-08-21T13:11:30-04:00
GHCi debugger: drop record name spaces for Ids
When binding new local variables at a breakpoint, we should create
Ids with variable namespace, and not record field namespace. Otherwise
the rest of the compiler falls over because the IdDetails are wrong.
Fixes #25109
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bd82ac9f by Hécate Kleidukos at 2024-08-21T13:12:12-04:00
base: Final deprecation of GHC.Pack
The timeline mandated by #21461 has come to its term and after two years
and four minor releases, we are finally removing GHC.Pack from base.
Closes #21536
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5092dbff by Sylvain Henry at 2024-08-21T13:12:54-04:00
JS: support rubbish static literals (#25177)
Support for rubbish dynamic literals was added in #24664. This patch
does the same for static literals.
Fix #25177
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b5a2c061 by Phil de Joux at 2024-08-21T13:13:33-04:00
haddock docs: prefix comes before, postfix comes after
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6fde3685 by Marcin Szamotulski at 2024-08-21T23:15:39-04:00
haddock: include package info with --show-interface
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7e02111b by Andreas Klebinger at 2024-08-21T23:16:15-04:00
Document the (x86) SIMD macros.
Fixes #25021.
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05116c83 by Rodrigo Mesquita at 2024-08-22T10:37:44-04:00
ghc-internal: Derive version from ghc's version
Fixes #25005
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73f5897d by Ben Gamari at 2024-08-22T10:37:44-04:00
base: Deprecate GHC.Desugar
See https://github.com/haskell/core-libraries-committee/issues/216.
This will be removed in GHC 9.14.
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821d0a9a by Cheng Shao at 2024-08-22T10:38:22-04:00
compiler: Store ForeignStubs and foreign C files in interfaces
This data is used alongside Core bindings to reconstruct intermediate
build products when linking Template Haskell splices with bytecode.
Since foreign stubs and files are generated in the pipeline, they were
lost with only Core bindings stored in interfaces.
The interface codec type `IfaceForeign` contains a simplified
representation of `ForeignStubs` and the set of foreign sources that
were manually added by the user.
When the backend phase writes an interface, `mkFullIface` calls
`encodeIfaceForeign` to read foreign source file contents and assemble
`IfaceForeign`.
After the recompilation status check of an upstream module,
`initWholeCoreBindings` calls `decodeIfaceForeign` to restore
`ForeignStubs` and write the contents of foreign sources to the file
system as temporary files.
The restored foreign inputs are then processed by `hscInteractive` in
the same manner as in a regular pipeline.
When linking the stub objects for splices, they are excluded from suffix
adjustment for the interpreter way through a new flag in `Unlinked`.
For details about these processes, please consult Note [Foreign stubs
and TH bytecode linking].
Metric Decrease:
T13701
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f0408eeb by Cheng Shao at 2024-08-23T10:37:10-04:00
git: remove a.out and include it in .gitignore
a.out is a configure script byproduct. It was mistakenly checked into
the tree in !13118. This patch removes it, and include it in
.gitignore to prevent a similar error in the future.
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1f95c5e4 by Matthew Pickering at 2024-08-23T10:37:46-04:00
docs: Fix code-block syntax on old sphinx version
This code-block directive breaks the deb9 sphinx build.
Fixes #25201
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27dceb42 by Sylvain Henry at 2024-08-26T11:05:11-04:00
JS: add basic support for POSIX *at functions (#25190)
openat/fstatat/unlinkat/dup are now used in the recent release of the
`directory` and `file-io` packages.
As such, these functions are (indirectly) used in the following tests
one we'll bump the `directory` submodule (see !13122):
- openFile008
- jsOptimizer
- T20509
- bkpcabal02
- bkpcabal03
- bkpcabal04
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c68be356 by Matthew Pickering at 2024-08-26T11:05:11-04:00
Update directory submodule to latest master
The primary reason for this bump is to fix the warning from `ghc-pkg
check`:
```
Warning: include-dirs: /data/home/ubuntu/.ghcup/ghc/9.6.2/lib/ghc-9.6.2/lib/../lib/aarch64-linux-ghc-9.6.2/directory-1.3.8.1/include doesn't exist or isn't a directory
```
This also requires adding the `file-io` package as a boot library (which
is discussed in #25145)
Fixes #23594 #25145
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4ee094d4 by Matthew Pickering at 2024-08-26T11:05:47-04:00
Fix aarch64-alpine target platform description
We are producing bindists where the target triple is
aarch64-alpine-linux
when it should be
aarch64-unknown-linux
This is because the bootstrapped compiler originally set the target
triple to `aarch64-alpine-linux` which is when propagated forwards by
setting `bootstrap_target` from the bootstrap compiler target.
In order to break this chain we explicitly specify build/host/target for
aarch64-alpine.
This requires a new configure flag `--enable-ignore-` which just
switches off a validation check that the target platform of the
bootstrap compiler is the same as the build platform. It is the same,
but the name is just wrong.
These commits can be removed when the bootstrap compiler has the correct
target triple (I looked into patching this on ci-images, but it looked
hard to do correctly as the build/host platform is not in the settings
file).
Fixes #25200
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e0e0f2b2 by Matthew Pickering at 2024-08-26T11:05:47-04:00
Bump nixpkgs commit for gen_ci script
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63a27091 by doyougnu at 2024-08-26T20:39:30-04:00
rts: win32: emit additional debugging information
-- migration from haskell.nix
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aaab3d10 by Vladislav Zavialov at 2024-08-26T20:40:06-04:00
Only export defaults when NamedDefaults are enabled (#25206)
This is a reinterpretation of GHC Proposal #409 that avoids a breaking
change introduced in fa0dbaca6c "Implements the Exportable Named Default proposal"
Consider a module M that has no explicit export list:
module M where
default (Rational)
Should it export the default (Rational)?
The proposal says "yes", and there's a test case for that:
default/DefaultImport04.hs
However, as it turns out, this change in behavior breaks existing
programs, e.g. the colour-2.3.6 package can no longer be compiled,
as reported in #25206.
In this patch, we make implicit exports of defaults conditional on
the NamedDefaults extension. This fix is unintrusive and compliant
with the existing proposal text (i.e. it does not require a proposal
amendment). Should the proposal be amended, we can go for a simpler
solution, such as requiring all defaults to be exported explicitly.
Test case: testsuite/tests/default/T25206.hs
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3a5bebf8 by Matthew Pickering at 2024-08-28T14:16:42-04:00
simplifier: Fix space leak during demand analysis
The lazy structure (a list) in a strict field in `DmdType` is not fully
forced which leads to a very large thunk build-up.
It seems there is likely still more work to be done here as it seems we
may be trading space usage for work done. For now, this is the right
choice as rather than using all the memory on my computer, compilation
just takes a little bit longer.
See #25196
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c2525e9e by Ryan Scott at 2024-08-28T14:17:17-04:00
Add missing parenthesizeHsType in cvtp's InvisP case
We need to ensure that when we convert an `InvisP` (invisible type pattern) to
a `Pat`, we parenthesize it (at precedence `appPrec`) so that patterns such as
`@(a :: k)` will parse correctly when roundtripped back through the parser.
Fixes #25209.
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1499764f by Sjoerd Visscher at 2024-08-29T16:52:56+02:00
Haddock: Add no-compilation flag
This flag makes sure to avoid recompilation of the code when generating documentation by only reading the .hi and .hie files, and throw an error if it can't find them.
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768fe644 by Andreas Klebinger at 2024-09-03T13:15:20-04:00
Add functions to check for weakly pinned arrays.
This commit adds `isByteArrayWeaklyPinned#` and `isMutableByteArrayWeaklyPinned#` primops.
These check if a bytearray is *weakly* pinned. Which means it can still be explicitly moved
by the user via compaction but won't be moved by the RTS.
This moves us one more stop closer to nailing down #22255.
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b16605e7 by Arsen Arsenović at 2024-09-03T13:16:05-04:00
ghc-toolchain: Don't leave stranded a.outs when testing for -g0
This happened because, when ghc-toolchain tests for -g0, it does so by
compiling an empty program. This compilation creates an a.out.
Since we create a temporary directory, lets place the test program
compilation in it also, so that it gets cleaned up.
Fixes: 25b0b40467d0a12601497117c0ad14e1fcab0b74
Closes: https://gitlab.haskell.org/ghc/ghc/-/issues/25203
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83e70b14 by Torsten Schmits at 2024-09-03T13:16:41-04:00
Build foreign objects for TH with interpreter's way when loading from iface
Fixes #25211
When linking bytecode for TH from interface core bindings with
`-fprefer-byte-code`, foreign sources are loaded from the interface as
well and compiled to object code in an ad-hoc manner.
The results are then loaded by the interpreter, whose way may differ
from the current build's target way.
This patch ensures that foreign objects are compiled with the
interpreter's way.
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0d3bc2fa by Cheng Shao at 2024-09-04T07:20:06-04:00
rts: fix checkClosure error message
This patch fixes an error message in checkClosure() when the closure
has already been evacuated. The previous logic was meant to print the
evacuated closure's type in the error message, but it was completely
wrong, given info was not really an info table, but a tagged pointer
that points to the closure's new address.
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fb0a4e5c by Sven Tennie at 2024-09-04T07:20:43-04:00
MO_AcquireFence: Less restrictive barrier
GCC and CLang translate the built-in `atomic_thread_fence(memory_order_acquire)`
to `dmb ishld`, which is a bit less restrictive than `dmb ish` (which
also implies stores.)
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a45f1488 by Fendor at 2024-09-04T20:22:00-04:00
testsuite: Add support to capture performance metrics via 'perf'
Performance metrics collected via 'perf' can be more accurate for
run-time performance than GHC's rts, due to the usage of hardware
counters.
We allow performance tests to also record PMU events according to 'perf
list'.
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ce61fca5 by Fendor at 2024-09-04T20:22:00-04:00
gitlab-ci: Add nightly job for running the testsuite with perf profiling support
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6dfb9471 by Fendor at 2024-09-04T20:22:00-04:00
Enable perf profiling for compiler performance tests
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da306610 by sheaf at 2024-09-04T20:22:41-04:00
RecordCon lookup: don't allow a TyCon
This commit adds extra logic when looking up a record constructor.
If GHC.Rename.Env.lookupOccRnConstr returns a TyCon (as it may, due to
the logic explained in Note [Pattern to type (P2T) conversion]),
we emit an error saying that the data constructor is not in scope.
This avoids the compiler falling over shortly thereafter, in the call to
'lookupConstructorInfo' inside 'GHC.Rename.Env.lookupRecFieldOcc',
because the record constructor would not have been a ConLike.
Fixes #25056
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9c354beb by Matthew Pickering at 2024-09-04T20:23:16-04:00
Use deterministic names for temporary files
When there are multiple threads they can race to create a temporary
file, in some situations the thread will create ghc_1.c and in some it
will create ghc_2.c. This filename ends up in the debug info for object
files after compiling a C file, therefore contributes to object
nondeterminism.
In order to fix this we store a prefix in `TmpFs` which serves to
namespace temporary files. The prefix is populated from the counter in
TmpFs when the TmpFs is forked. Therefore the TmpFs must be forked
outside the thread which consumes it, in a deterministic order, so each
thread always receives a TmpFs with the same prefix.
This assumes that after the initial TmpFs is created, all other TmpFs
are created from forking the original TmpFs. Which should have been try
anyway as otherwise there would be file collisions and non-determinism.
Fixes #25224
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59906975 by Hécate Kleidukos at 2024-09-05T10:57:15-04:00
Silence x-partial in Haddock.Backends.Xhtml
This is an unfortunate consequence of two mechanisms:
* GHC provides (possibly-empty) lists of names
* The functions that retrieve those names are not equipped to do error
reporting, and thus accept these lists at face value. They will have
to be attached an effect for error reporting in a later refactoring
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8afbab62 by Hécate Kleidukos at 2024-09-05T10:57:15-04:00
hadrian: Support loading haddock in ghci
There is one tricky aspect with wired-in packages where the boot package
is built with `-this-unit-id ghc` but the dependency is reported as
`-package-id ghc-9.6...`. This has never been fixed in GHC as the
situation of loading wired-in packages into the multi-repl seems like
quite a niche feature that is always just easier to workaround.
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6cac9eb8 by Matthew Pickering at 2024-09-05T10:57:15-04:00
hadrian/multi: Load all targets when ./hadrian/ghci-multi is called
This seems to make a bit more sense than just loading `ghc` component
(and dependencies).
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7d84df86 by Matthew Pickering at 2024-09-05T10:57:51-04:00
ci: Beef up determinism interface test
There have recently been some determinism issues with the simplifier and
documentation. We enable more things to test in the ABI test to check
that we produce interface files deterministically.
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5456e02e by Sylvain Henry at 2024-09-06T11:57:01+02:00
Transform some StgRhsClosure into StgRhsCon after unarisation (#25166)
Before unarisation we may have code like:
Test.foo :: Test.D
[GblId, Unf=OtherCon []] =
\u []
case (# |_| #) [GHC.Types.(##)] of sat_sAw [Occ=Once1] {
__DEFAULT -> Test.D [GHC.Types.True sat_sAw];
};
After unarisation we get:
Test.foo :: Test.D
[GblId, Unf=OtherCon []] =
{} \u [] Test.D [GHC.Types.True 2#];
Notice that it's still an Updatable closure for no reason anymore. This
patch transforms appropriate StgRhsClosures into StgRhsCons after
unarisation, allowing these closures to be statically allocated. Now we
get the expected:
Test.foo :: Test.D
[GblId, Unf=OtherCon []] =
Test.D! [GHC.Types.True 2#];
Fix #25166
To avoid duplicating code, this patch refactors the mk(Top)StgRhs
functions and put them in a GHC.Stg.Make module alongside the new
mk(Top)StgRhsCon_maybe functions.
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958b4518 by Hécate Kleidukos at 2024-09-06T16:40:56-04:00
haddock: Add missing requirements.txt for the online manual
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573f9833 by Sven Tennie at 2024-09-08T09:58:21+00:00
AArch64: Implement takeRegRegMoveInstr
This has likely been forgotten.
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20b0de7d by Hécate Kleidukos at 2024-09-08T14:19:28-04:00
haddock: Configuration fix for ReadTheDocs
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03055c71 by Sylvain Henry at 2024-09-09T14:58:15-04:00
JS: fake support for native adjustors (#25159)
The JS backend doesn't support adjustors (I believe) and in any case if
it ever supports them it will be a native support, not one via libffi.
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5bf0e6bc by Sylvain Henry at 2024-09-09T14:58:56-04:00
JS: remove redundant h$lstat
It was introduced a second time by mistake in
27dceb42376c34b99a38e36a33b2abc346ed390f (cf #25190)
- - - - -
ffbc2ab0 by Simon Peyton Jones at 2024-09-10T00:40:37-04:00
Refactor only newSysLocalDs
* Change newSysLocalDs to take a scaled type
* Add newSysLocalMDs that takes a type and makes a ManyTy local
Lots of files touched, nothing deep.
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7124e4ad by Simon Peyton Jones at 2024-09-10T00:40:37-04:00
Don't introduce 'nospec' on the LHS of a RULE
This patch address #25160. The main payload is:
* When desugaring the LHS of a RULE, do not introduce the `nospec` call
for non-canonical evidence. See GHC.Core.InstEnv
Note [Coherence and specialisation: overview]
The `nospec` call usually introdued in `dsHsWrapper`, but we don't want it
on the LHS of a RULE (that's what caused #25160). So now `dsHsWrapper` takes
a flag to say if it's on the LHS of a RULE. See wrinkle (NC1) in
`Note [Desugaring non-canonical evidence]` in GHC.HsToCore.Binds.
But I think this flag will go away again when I have finished with my
(entirely separate) speciaise-on-values patch (#24359).
All this meant I had to re-understand the `nospec` stuff and coherence, and
that in turn made me do some refactoring, and add a lot of new documentation
The big change is that in GHC.Core.InstEnv, I changed
the /type synonym/ `Canonical` into
a /data type/ `CanonicalEvidence`
and documented it a lot better.
That in turn made me realise that CalLStacks were being treated with a
bit of a hack, which I documented in `Note [CallStack and ExecptionContext hack]`.
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663daf8d by Simon Peyton Jones at 2024-09-10T00:40:37-04:00
Add defaulting of equalities
This MR adds one new defaulting strategy to the top-level
defaulting story: see Note [Defaulting equalities] in GHC.Tc.Solver.
This resolves #25029 and #25125, which showed that users were
accidentally relying on a GHC bug, which was fixed by
commit 04f5bb85c8109843b9ac2af2a3e26544d05e02f4
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Wed Jun 12 17:44:59 2024 +0100
Fix untouchability test
This MR fixes #24938. The underlying problem was tha the test for
"does this implication bring in scope any equalities" was plain wrong.
This fix gave rise to a number of user complaints; but the improved
defaulting story of this MR largely resolves them.
On the way I did a bit of refactoring, of course
* Completely restructure the extremely messy top-level defaulting
code. The new code is in GHC.Tc.Solver.tryDefaulting, and is much,
much, much esaier to grok.
- - - - -
e28cd021 by Andrzej Rybczak at 2024-09-10T00:41:18-04:00
Don't name a binding pattern
It's a keyword when PatternSynonyms are set.
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b09571e2 by Simon Peyton Jones at 2024-09-10T00:41:54-04:00
Do not use an error thunk for an absent dictionary
In worker/wrapper we were using an error thunk for an absent dictionary,
but that works very badly for -XDictsStrict, or even (as #24934 showed)
in some complicated cases involving strictness analysis and unfoldings.
This MR just uses RubbishLit for dictionaries. Simple.
No test case, sadly because our only repro case is rather complicated.
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8bc9f5f6 by Hécate Kleidukos at 2024-09-10T00:42:34-04:00
haddock: Remove support for applehelp format in the Manual
- - - - -
9ca15506 by doyougnu at 2024-09-10T10:46:38-04:00
RTS linker: add support for hidden symbols (#25191)
Add linker support for hidden symbols. We basically treat them as weak
symbols.
Patch upstreamed from haskell.nix
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
Co-authored-by: Moritz Angermann <moritz.angermann(a)gmail.com>
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3b2dc826 by Sven Tennie at 2024-09-10T10:47:14-04:00
Fix C warnings (#25237)
GCC 14 treats the fixed warnings as errors by default. I.e. we're
gaining GCC 14 compatibility with these fixes.
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05715994 by Sylvain Henry at 2024-09-10T10:47:55-04:00
JS: fix codegen of static string data
Before this patch, when string literals are made trivial, we would
generate `h$("foo")` instead of `h$str("foo")`. This was
introduced by mistake in 6bd850e887b82c5a28bdacf5870d3dc2fc0f5091.
- - - - -
949ebced by Hécate Kleidukos at 2024-09-10T19:19:40-04:00
haddock: Re-organise cross-OS compatibility layer
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84ac9a99 by Hécate Kleidukos at 2024-09-10T19:19:40-04:00
haddock: Remove CPP for obsolete GHC and Cabal versions
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370d1599 by Hécate Kleidukos at 2024-09-10T19:19:40-04:00
haddock: Move the changelog file to the 'extra-doc-files' section in the cabal file
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cfbff65a by Simon Peyton Jones at 2024-09-10T19:20:16-04:00
Add ZonkAny and document it
This MR fixed #24817 by adding ZonkAny, which takes a Nat
argument.
See Note [Any types] in GHC.Builtin.Types, especially
wrinkle (Any4).
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0167e472 by Matthew Pickering at 2024-09-11T02:41:42-04:00
hadrian: Make sure ffi headers are built before using a compiler
When we are using ffi adjustors then we rely on `ffi.h` and
`ffitarget.h` files during code generation when compiling stubs.
Therefore we need to add this dependency to the build system (which this
patch does).
Reproducer, configure with `--enable-libffi-adjustors` and then build
"_build/stage1/libraries/ghc-prim/build/GHC/Types.p_o".
Observe that this fails before this patch and works afterwards.
Fixes #24864
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
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0f696958 by Rodrigo Mesquita at 2024-09-11T02:42:18-04:00
base: Deprecate BCO primops exports from GHC.Exts
See https://github.com/haskell/core-libraries-committee/issues/212.
These reexports will be removed in GHC 9.14.
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cf0e7729 by Alan Zimmerman at 2024-09-11T02:42:54-04:00
EPA: Remove Anchor = EpaLocation synonym
This just causes confusion.
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8e462f4d by Andrew Lelechenko at 2024-09-11T22:20:37-04:00
Bump submodule deepseq to 1.5.1.0
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aa4500ae by Sebastian Graf at 2024-09-11T22:21:13-04:00
User's guide: Fix the "no-backtracking" example of -XOrPatterns (#25250)
Fixes #25250.
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1c479c01 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add Native Code Generator (NCG)
This architecture wasn't supported before.
Co-authored-by: Moritz Angermann <moritz.angermann(a)gmail.com>
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51b678e1 by Sven Tennie at 2024-09-12T10:39:38+00:00
Adjust test timings for slower computers
Increase the delays a bit to be able to run these tests on slower
computers.
The reference was a Lichee Pi 4a RISCV64 machine.
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a0e41741 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add RTS linker
This architecture wasn't supported before.
Co-authored-by: Moritz Angermann <moritz.angermann(a)gmail.com>
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d365b1d4 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Ignore divbyzero test
The architecture's behaviour differs from the test's expectations. See
comment in code why this is okay.
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abf3d699 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Enable MulMayOflo_full test
It works and thus can be tested.
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38c7ea8c by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: LibffiAdjustor: Ensure code caches are flushed
RISCV64 needs a specific code flushing sequence (involving fence.i) when
new code is created/loaded.
- - - - -
7edc6965 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add additional linker symbols for builtins
We're relying on some GCC/Clang builtins. These need to be visible to
the linker (and not be stripped away.)
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92ad3d42 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add GHCi support
As we got a RTS linker for this architecture now, we can enable GHCi for
it.
- - - - -
a145f701 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Set codeowners of the NCG
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8e6d58cf by Sven Tennie at 2024-09-12T10:39:38+00:00
Add test for C calling convention
Ensure that parameters and return values are correctly processed. A
dedicated test (like this) helps to get the subtleties of calling
conventions easily right.
The test is failing for WASM32 and marked as fragile to not forget to
investigate this (#25249).
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fff55592 by Torsten Schmits at 2024-09-12T21:50:34-04:00
finder: Add `IsBootInterface` to finder cache keys
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cdf530df by Alan Zimmerman at 2024-09-12T21:51:10-04:00
EPA: Sync ghc-exactprint to GHC
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1374349b by Sebastian Graf at 2024-09-13T07:52:11-04:00
DmdAnal: Fast path for `multDmdType` (#25196)
This is in order to counter a regression exposed by SpecConstr.
Fixes #25196.
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80769bc9 by Andrew Lelechenko at 2024-09-13T07:52:47-04:00
Bump submodule array to 0.5.8.0
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49ac3fb8 by Sylvain Henry at 2024-09-16T10:33:01-04:00
Linker: add support for extra built-in symbols (#25155)
See added Note [Extra RTS symbols] and new user guide entry.
Co-authored-by: Hamish Mackenzie <Hamish.K.Mackenzie(a)gmail.com>
Co-authored-by: Moritz Angermann <moritz.angermann(a)gmail.com>
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3939a8bf by Samuel Thibault at 2024-09-16T10:33:44-04:00
GNU/Hurd: Add getExecutablePath support
GNU/Hurd exposes it as /proc/self/exe just like on Linux.
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d3b19851 by Sylvain Henry at 2024-09-17T11:03:28-04:00
RTS: expose closure_sizeW_ (#25252)
C code using the closure_sizeW macro can't be linked with the RTS linker
without this patch. It fails with:
ghc-9.11.20240911: Failed to lookup symbol: closure_sizeW_
Fix #25252
Co-authored-by: Hamish Mackenzie <Hamish.K.Mackenzie(a)gmail.com>
Co-authored-by: Moritz Angermann <moritz.angermann(a)gmail.com>
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137bf74d by Sebastian Graf at 2024-09-17T11:04:05-04:00
HsExpr: Inline `HsWrap` into `WrapExpr`
This nice refactoring was suggested by Simon during review:
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13261#note_583374
Fixes #25264.
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7fd9e5e2 by Sebastian Graf at 2024-09-17T11:04:05-04:00
Pmc: Improve Desugaring of overloaded list patterns (#25257)
This actually makes things simpler.
Fixes #25257.
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e4169ba9 by Ben Gamari at 2024-09-18T07:55:28-04:00
configure: Correctly report when subsections-via-symbols is disabled
As noted in #24962, currently subsections-via-symbols is disabled on
AArch64/Darwin due to alleged breakage. However, `configure` reports to
the user that it is enabled. Fix this.
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9d20a787 by Mario Blažević at 2024-09-18T07:56:08-04:00
Modified the default export implementation to match the amended spec
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35eb4f42 by Sylvain Henry at 2024-09-18T07:57:00-04:00
FFI: don't ppr Id/Var symbols with debug info (#25255)
Even if `-dpp-debug` is enabled we should still generate valid C code.
So we disable debug info printing when rendering with Code style.
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9e96dad8 by Sebastian Graf at 2024-09-21T17:47:59-04:00
Demand: Combine examples into Note (#25107)
Just a leftover from !13060.
Fixes #25107.
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21aaa34b by sheaf at 2024-09-21T17:48:36-04:00
Use x86_64-unknown-windows-gnu target for LLVM on Windows
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992a7624 by sheaf at 2024-09-21T17:48:36-04:00
LLVM: use -relocation-model=pic on Windows
This is necessary to avoid the segfaults reported in #22487.
Fixes #22487
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c50d29be by Ryan Hendrickson at 2024-09-21T17:49:15-04:00
compiler: Use type abstractions when deriving
For deriving newtype and deriving via, in order to bring type variables
needed for the coercions into scope, GHC generates type signatures for
derived class methods. As a simplification, drop the type signatures and
instead use type abstractions to bring method type variables into scope.
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f04fd0ae by Zubin Duggal at 2024-09-21T17:49:51-04:00
driver: Ensure we run driverPlugin for staticPlugins (#25217)
driverPlugins are only run when the plugin state changes. This meant they were
never run for static plugins, as their state never changes.
We need to keep track of whether a static plugin has been initialised to ensure
we run static driver plugins at least once. This necessitates an additional field
in the `StaticPlugin` constructor as this state has to be bundled with the plugin
itself, as static plugins have no name/identifier we can use to otherwise reference
them
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620becd7 by Andreas Klebinger at 2024-09-21T17:50:27-04:00
Allow unknown fd device types for setNonBlockingMode.
This allows fds with a unknown device type to have blocking mode
set. This happens for example for fds from the inotify subsystem.
Fixes #25199.
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c76e25b3 by Hécate Kleidukos at 2024-09-21T17:51:07-04:00
Use Hackage version of Cabal 3.14.0.0 for Hadrian.
We remove the vendored Cabal submodule.
Also update the bootstrap plans
Fixes #25086
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6c83fd7f by Zubin Duggal at 2024-09-21T17:51:07-04:00
ci: Ensure we source ci.sh in any jobs that run commands outside of ci.sh
ci.sh sets up the toolchain environment, including paths for the cabal directory, the
toolchain binaries etc. If we run any commands outside of ci.sh, unless we
source ci.sh we will use the wrong values for these environment variables.
In particular, I ran into an issue where the cabal invocation `hadrian/ghci` was
using an old index state despite `ci.sh setup` updating and setting the correct
index state. This is because `ci.sh` sets the `CABAL_DIR` to a different place, which
is where the index was downloaded to, but we were using the default cabal directory
outside ci.sh
The solution is to source the correct environment `ci.sh` using `. ci.sh setup`
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9586998d by Sven Tennie at 2024-09-21T17:51:43-04:00
ghc-toolchain: Set -fuse-ld even for ld.bfd
This reflects the behaviour of the autoconf scripts.
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d7016e0d by Sylvain Henry at 2024-09-21T17:52:24-04:00
Parser: be more careful when lexing extended literals (#25258)
Previously we would lex invalid prefixes like "8#Int3" as [8#Int, 3].
A side-effect of this patch is that we now allow negative unsigned
extended literals. They trigger an overflow warning later anyway.
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ca67d7cb by Zubin Duggal at 2024-09-22T02:34:06-04:00
rts: Ensure we dump new Cost Centres added by freshly loaded objects to the eventlog.
To do this, we keep track of the ID of the last cost centre we dumped in DUMPED_CC_ID,
and call dumpCostCentresToEventLog from refreshProfilingCCSs, which will dump all the new
cost centres up to the one we already dumped in DUMPED_CC_ID.
Fixes #24148
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c0df5aa9 by Alan Zimmerman at 2024-09-22T02:34:42-04:00
EPA: Replace AnnsModule am_main with EpTokens
Working towards removing `AddEpAnn`
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2a551cd5 by Matthew Pickering at 2024-09-24T16:33:50+05:30
ci: Run abi-test on test-abi label
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ab4039ac by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
testsuite: Add a test for object determinism
Extends the abi_test with an object determinism check
Also includes a standalone test to be run by developers manually when
debugging issues with determinism.
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d62c18d8 by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
determinism: Sampling uniques in the CG
To achieve object determinism, the passes processing Cmm and the rest of
the code generation pipeline musn't create new uniques which are
non-deterministic.
This commit changes occurrences of non-deterministic unique sampling
within these code generation passes by a deterministic unique sampling
strategy by propagating and threading through a deterministic
incrementing counter in them. The threading is done implicitly with
`UniqDSM` and `UniqDSMT`.
Secondly, the `DUniqSupply` used to run a `UniqDSM` must be threaded
through all passes to guarantee uniques in different passes are unique
amongst them altogether. Specifically, the same `DUniqSupply` must be
threaded through the CG Streaming pipeline, starting with Driver.Main
calling `StgToCmm.codeGen`, `cmmPipeline`, `cmmToRawCmm`, and
`codeOutput` in sequence.
To thread resources through the `Stream` abstraction, we use the `UniqDSMT`
transformer on top of `IO` as the Monad underlying the Stream. `UniqDSMT` will
thread the `DUniqSupply` through every pass applied to the `Stream`, for every
element. We use @type CgStream = Stream (UniqDSMT IO)@ for the Stream used in
code generation which that carries through the deterministic unique supply.
See Note [Deterministic Uniques in the CG]
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3bbe4af4 by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
determinism: Cmm unique renaming pass
To achieve object determinism, we need to prevent the non-deterministic
uniques from leaking into the object code. We can do this by
deterministically renaming the non-external uniques in the Cmm groups
that are yielded right after StgToCmm.
The key to deterministic renaming is observing that the order of
declarations, instructions, and data in the Cmm groups are already
deterministic (modulo other determinism bugs), regardless of the
uniques. We traverse the Cmm AST in this deterministic order and
rename the uniques, incrementally, in the order they are found, thus
making them deterministic. This renaming is guarded by
-fobject-determinism which is disabled by default for now.
This is one of the key passes for object determinism. Read about the
overview of object determinism and a more detailed explanation of this
pass in:
* Note [Object determinism]
* Note [Renaming uniques deterministically]
Significantly closes the gap to #12935
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8357ed50 by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
determinism: DCmmGroup vs CmmGroup
Part of our strategy in producing deterministic objects, namely,
renaming all Cmm uniques in order, depend on the object code produced
having a deterministic order (say, A_closure always comes before
B_closure).
However, the use of LabelMaps in the Cmm representation invalidated this
requirement because the LabelMaps elements would already be in a
non-deterministic order (due to the original uniques), and the renaming
in sequence wouldn't work because of that non-deterministic order.
Therefore, we now start off with lists in CmmGroup (which preserve the
original order), and convert them into LabelMaps (for performance in the
code generator) after the uniques of the list elements have been
renamed.
See Note [DCmmGroup vs CmmGroup or: Deterministic Info Tables] and #12935.
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
- - - - -
0e675fb8 by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
determinism: Don't print unique in pprFullName
This unique was leaking as part of the profiling description in info
tables when profiling was enabled, despite not providing information
relevant to the profile.
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340f58b0 by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
determinism: UDFM for distinct-constructor-tables
In order to produce deterministic objects when compiling with
-distinct-constructor-tables, we also have to update the data
constructor map to be backed by a deterministic unique map (UDFM) rather
than a non-deterministic one (UniqMap).
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282f37a0 by Rodrigo Mesquita at 2024-09-24T16:33:50+05:30
determinism: InfoTableMap uniques in generateCgIPEStub
Fixes object determinism when using -finfo-table-map
Make sure to also deterministically rename the IPE map (as per Note
[Renaming uniques deterministically]), and to use a deterministic unique
supply when creating new labels for the IPE information to guarantee
deterministic objects when IPE information is requested.
Note that the Cmm group produced in generateCgIPEStub must /not/ be
renamed because renaming uniques is not idempotent, and the references
to the previously renamed code in the IPE Cmm group would be renamed
twice and become invalid references to non-existent symbols.
We do need to det-rename the InfoTableMap that is created in the
conversion from Core to Stg. This is not a problem since that map won't
refer any already renamed names (since it was created before the
renaming).
- - - - -
7b37afc9 by Zubin Duggal at 2024-09-24T16:33:50+05:30
ci: Allow abi-test to fail.
We are not fully deterministic yet, see #12935 for work that remains to be done.
- - - - -
a63ee33a by Simon Peyton Jones at 2024-09-25T17:08:24-04:00
Add Given injectivity for built-in type families
Ticket #24845 asks (reasonably enough) that if we have
[G] a+b ~ 0
then we also know
[G] a ~ 0, b ~ 0
and similar injectivity-like facts for other built-in type
families. The status quo was that we never generate evidence for
injectivity among Givens -- but it is quite reasonnable to do so.
All we need is to have /evidence/ for the new constraints
This MR implements that goal. I also took the opportunity to
* Address #24978: refactoring UnivCo
* Fix #25248, which was a consequences of the previous formulation of UnivCo
As a result this MR touches a lot of code. The big things are:
* Coercion constructor UnivCo now takes a [Coercion] as argument to
express the coercions on which the UnivCo depends. A nice consequence
is that UnivCoProvenance now has no free variables, simpler in a number
of places.
* Coercion constructors AxiomInstCo and AxiomRuleCo are combined into
AxiomCo. The new AxiomCo, carries a (slightly oddly named)
CoAxiomRule, which itself is a sum type of the various forms of
built-in axiom. See Note [CoAxiomRule] in GHC.Core.Coercion.Axiom
A merit of this is that we can separate the case of open and closed
type families, and eliminate the redundant `BranchIndex` in the former
case.
* Much better representation for data BuiltInSynFamily, which means we
no longer need to enumerate built-in axioms as well as built-in tycons.
* There is a massive refactor in GHC.Builtin.Types.Literals, which contains all
the built-in axioms for type-level operations (arithmetic, append, cons etc).
A big change is that instead of redundantly having (a) a hand-written
matcher, and (b) a template-based "proves" function, which were hard to
keep in sync, the two are derive from one set of human-supplied info.
See GHC.Builtin.Types.Literals.mkRewriteAxiom, and friends.
* Significant changes in GHC.Tc.Solver.Equality to account for the new
opportunity for Given/Given equalities.
Smaller things
* Improve pretty-printing to avoid parens around atomic coercions.
* Do proper eqType in findMatchingIrreds, not `eqTypeNoKindCheck`.
Looks like a bug, Richard agrees.
* coercionLKind and coercionRKind are hot functions. I refactored the
implementation (which I had to change anyway) to increase sharing.
See Note [coercionKind performance] in GHC.Core.Coercion
* I wrote a new Note [Finding orphan names] in GHC.Core.FVs about orphan
names
* I improved the `is_concrete` flag in GHC.Core.Type.buildSynTyCon, to avoid
calling tyConsOfType. I forget exactly why I did this, but it's definitely
better now.
* I moved some code from GHC.Tc.Types.Constraint into GHC.Tc.Types.CtLocEnv
and I renamed the module GHC.Tc.Types.CtLocEnv to GHC.Tc.Types.CtLoc
- - - - -
dd8ef342 by Ryan Scott at 2024-09-25T17:09:01-04:00
Resolve ambiguous method-bound type variables in vanilla defaults and GND
When defining an instance of a class with a "vanilla" default, such as in the
following example (from #14266):
```hs
class A t where
f :: forall x m. Monoid x => t m -> m
f = <blah>
instance A []
```
We have to reckon with the fact that the type of `x` (bound by the type
signature for the `f` method) is ambiguous. If we don't deal with the ambiguity
somehow, then when we generate the following code:
```hs
instance A [] where
f = $dmf @[] -- NB: the type of `x` is still ambiguous
```
Then the generated code will not typecheck. (Issue #25148 is a more recent
example of the same problem.)
To fix this, we bind the type variables from the method's original type
signature using `TypeAbstractions` and instantiate `$dmf` with them using
`TypeApplications`:
```hs
instance A [] where
f @x @m = $dmf @[] @x @m -- `x` is no longer ambiguous
```
Note that we only do this for vanilla defaults and not for generic defaults
(i.e., defaults using `DefaultSignatures`). For the full details, see `Note
[Default methods in instances] (Wrinkle: Ambiguous types from vanilla method
type signatures)`.
The same problem arose in the code generated by `GeneralizedNewtypeDeriving`,
as we also fix it here using the same technique. This time, we can take
advantage of the fact that `GeneralizedNewtypeDeriving`-generated code
_already_ brings method-bound type variables into scope via `TypeAbstractions`
(after !13190), so it is very straightforward to visibly apply the type
variables on the right-hand sides of equations. See `Note [GND and ambiguity]`.
Fixes #14266. Fixes #25148.
- - - - -
0a4da5d2 by ARATA Mizuki at 2024-09-25T17:09:41-04:00
Document primitive string literals and desugaring of string literals
Fixes #17474 and #17974
Co-authored-by: Matthew Craven <5086-clyring(a)users.noreply.gitlab.haskell.org>
- - - - -
ad0731ad by Zubin Duggal at 2024-09-25T17:10:18-04:00
rts: Fix segfault when using non-moving GC with profiling
`nonMovingCollect()` swaps out the `static_flag` value used as a
sentinel for `gct->scavenged_static_objects`, but the subsequent call
`resetStaticObjectForProfiling()` sees the old value of `static_flag` used as
the sentinel and segfaults. So we must call `resetStaticObjectForProfiling()`
before calling `nonMovingCollect()` as otherwise it looks for the incorrect
sentinel value
Fixes #25232 and #23958
Also teach the testsuite driver about nonmoving profiling ways
and stop disabling metric collection when nonmoving GC is enabled.
- - - - -
e7a26d7a by Sylvain Henry at 2024-09-25T17:11:00-04:00
Fix interaction between fork and kqueue (#24672)
A kqueue file descriptor isn't inherited by a child created with fork.
As such we mustn't try to close this file descriptor as we would close a
random one, e.g. the one used by timerfd.
Fix #24672
- - - - -
6863503c by Simon Peyton Jones at 2024-09-25T17:11:37-04:00
Improve GHC.Tc.Solver.defaultEquality
This MR improves GHC.Tc.Solver.defaultEquality to solve #25251.
The main change is to use checkTyEqRhs to check the equality, so
that we do promotion properly.
But within that we needed a small enhancement to LC_Promote. See
Note [Defaulting equalites] (DE4) and (DE5)
The tricky case is (alas) hard to trigger, so I have not added a
regression test.
- - - - -
97a6c6c3 by Sylvain Henry at 2024-09-25T17:12:18-04:00
JS: fix h$withCStringOnHeap helper (#25288)
strlen returns the length of the string without the \0 terminating byte,
hence CString weren't properly allocated on the heap (ending \0 byte was
missing).
- - - - -
5f7c20bc by Ben Gamari at 2024-09-26T04:14:05-04:00
base: Propagate `error` CallStack to thrown exception
Previously `errorCallWithCallStackException` failed to propagate its
`CallStack` argument, which represents the call-chain of the preceding
`error` call, to the exception that it returned. Consequently, the
call-stack of `error` calls were quite useless.
Unfortunately, this is the second time that I have fixed this but it
seems the first must have been lost in rebasing.
Fixes a bug in the implementation of CLC proposal 164
<https://github.com/haskell/core-libraries-committee/issues/164>
Fixes #24807.
- - - - -
c20d5186 by Matthew Pickering at 2024-09-26T04:14:42-04:00
driver: Fix -working-dir for foreign files
-working-dir definitely needs more serious testing, there are some easy
ways to test this.
* Modify Cabal to call ghc using -working-dir rather than changing
directory.
* Modify the testsuite to run ghc using `-working-dir` rather than
running GHC with cwd = temporary directory.
However this will have to wait until after 9.12.
Fixes #25150
- - - - -
88eaa7ac by Sylvain Henry at 2024-09-26T04:15:24-04:00
Enum deriving: reuse predError, succError, toEnumError
Reuse predError, succError, and toEnumError when deriving Enum instances
to avoid generating different error strings per instance. E.g. before
this patch for every instance for a type FOO we would generate a string:
"pred{FOO}: tried to take `pred' of first tag in enumeration"#
- - - - -
e9fa1163 by Sylvain Henry at 2024-09-26T04:15:24-04:00
Enum deriving: generate better code (#16364)
Generate better code for Enum.toEnum: check both the lower and the upper
bounds at once with an unsigned comparison.
Initially I've used a type ascription with a call to 'fromIntegral',
hence the slight refactoring of nlAscribe. Using 'fromIntegral' was
problematic (too low in the module hierarchy) so 'enumIntToWord' was
introduced instead.
Combined with the previous commit, T21839c ghc/alloc decrease by 5%
Metric Decrease:
T21839c
- - - - -
383af074 by Sylvain Henry at 2024-09-26T04:16:06-04:00
Core: add absorb rules for binary or/and (#16351)
Rules:
x or (x and y) ==> x
x and (x or y) ==> x
- - - - -
783c8b29 by Matthew Pickering at 2024-09-26T12:07:44-04:00
Don't compile `asBox` with -fprof-late
The `asBox` function is intended to store exactly the closure which the
user passes to it. Placing a cost centre on asBox introduces a thunk,
which violates this expectation and can change the result of using asBox
when profiling is enabled.
See #25212 for more details and ample opportunity to discuss if this is
a bug or not.
- - - - -
0967dcc7 by Matthew Pickering at 2024-09-26T12:07:44-04:00
Fix normalisation of .prof files
Fix 1: If a cost centre contained CAF then the normalisation was
corrupted, now only check if CAF is at the start of a line.
Fix 2: "no location info" contain a space, which messed up the next
normalisation logic which assumed that columns didn't have spaced in.
- - - - -
9eda1cb9 by Matthew Pickering at 2024-09-26T12:07:44-04:00
testsuite: Fix normalisation of prof_files removing newlines
These normalisation steps were collapsing lines together, which made
subsequent normalisation steps fail.
```
foo x y z
CAF x y z
qux x y z
```
was getting normalised to
```
foo x y z qux x y z
```
which means that subsequent line based filters would not work correctly.
- - - - -
2b25f9e2 by Matthew Pickering at 2024-09-26T12:07:44-04:00
packaging: Enable late-ccs for release flavour
This enables late cost centres when building profiled libraries and
subsequently greatly improves the resolution of cost centre stacks when
profiling.
This patch also introduces the `grep_prof` test modifier which is used
to apply a further filter to the .prof file before they are compared.
Fixes #21732
-------------------------
Metric Increase:
libdir
-------------------------
- - - - -
bb030d0d by Brandon Chinn at 2024-09-26T12:08:21-04:00
Replace manual string lexing (#25158)
Metric Increase:
MultilineStringsPerf
This commit replaces the manual string lexing logic with native Alex
lexing syntax. This aligns the lexer much closer to the Haskell Report,
making it easier to see how the implementation and spec relate. This
slightly increases memory usage when compiling multiline strings because
we now have two distinct phases: lexing the multiline string with Alex
and post-processing the string afterwards. Before, these were done at
the same time, but separating them allows us to push as much logic into
normal Alex lexing as possible.
Since multiline strings are a new feature, this regression shouldn't be
too noticeable. We can optimize this over time.
- - - - -
16742987 by Matthew Pickering at 2024-09-26T12:08:57-04:00
Revert !4655: Stop 'import "base" Prelude' removing implicit Prelude import
This behaviour is problematic for the principle reason that `import
Prelude` may not refer to the `base` package, and in which case
importing an entirely unrelated module causing your implicit prelude to
leave the scope is extremely surprising. See the added test for this
example. Discussion on #17045.
The secondary reason for reverting this patch is that "base" can't be a
wired in package any more (see #24903), so we have to remove special
logic which singles out base from the compiler.
The rule for implicit shadowing is now simply:
* If you write import Prelude (..) then you don't get an implicit prelude import
* If you write import "foobar" Prelude (..) for all pkgs foobar,
you get an implicit import of prelude.
If you want to write a package import of Prelude, then you can enable
`NoImplicitPrelude` for the module in question to recover the behaviour
of ghc-9.2-9.10.
Fixes #17045
- - - - -
57c50f41 by Matthew Pickering at 2024-09-26T12:08:57-04:00
Rename COMPILING_BASE_PACKAGE to COMPILING_GHC_INTERNAL_PACKAGE
The COMPILING_BASE_PACKAGE macro is concerned with issues defining
symbols and using symbols in the same compilation unit. However, these
symbols now exist in ghc-internal rather than base, so we should rename
the macro accordingly.
The code is guards is likely never used as we never produce windows DLLs
but it is simpler to just perform the renaming for now.
These days there is little doubt that this macro defined in this ad-hoc
manner would be permitted to exist, but these days are not those days.
Fixes #25221
- - - - -
70764243 by Matthew Pickering at 2024-09-26T12:08:57-04:00
Preload ghc-internal rather than base
This occurence of baseUnitId was missed when moving the bulk of internal
definitions into `ghc-internal`.
We need to remove this preloading of `base` now because `base` should
not be wired in.
Towards #24903
- - - - -
12915609 by Matthew Pickering at 2024-09-26T12:08:57-04:00
Remove Data.List compat warning
There is currently a warning implemented in -Wcompat which warns you
when importing Data.List in a non-qualified manner.
```
A.hs:3:8: warning: [-Wcompat-unqualified-imports]
To ensure compatibility with future core libraries changes
imports to Data.List should be
either qualified or have an explicit import list.
|
3 | import Data.List
| ^^^^^^^^^
Ok, one module loaded.
```
GHC ticket: https://gitlab.haskell.org/ghc/ghc/-/issues/17244
CLC discussion: https://groups.google.com/g/haskell-core-libraries/c/q3zHLmzBa5E
This warning was implemented as part of the migration to making
Data.List monomorphic again (and to be used like Data.Set, Data.Map
etc). That doesn't seem like it happened, and I imagine that the current
CLC would require a new proposal anyway in order to do that now. It's
not clear in any case what "future core libraries changes" we are
waiting to happen before this warning can be removed.
Given the first phase of the proposal has lasted 5 years it doesn't seem
that anyone is motivated to carry the proposal to completion. It does
seem a bit unnecessary to include a warning in the compiler about
"future changes to the module" when there's no timeline or volunteer to
implement these changes.
The removal of this warning was discussed again at:
https://github.com/haskell/core-libraries-committee/issues/269
During the discussion there was no new enthusiasm to move onto the next
stages of the proposal so we are removing the warning to unblock the
reinstallable "base" project (#24903)
Fixes #24904
- - - - -
d4e4d498 by Matthew Pickering at 2024-09-26T12:08:57-04:00
Move Control.Monad.Zip into ghc-internal
mzip is wired in and therefore needs to be in ghc-internal.
Fixes #25222
Towards #24903
- - - - -
d3dacdfb by Matthew Pickering at 2024-09-26T12:08:57-04:00
Unwire the base package
This patch just removes all the functions related to wiring-in the base
package and the `-this-unit-id=base` flag from the cabal file.
After this commit "base" becomes just like any other package and the
door is opened to moving base into an external repo and releasing base
on a separate schedule to the rest of ghc.
Closes #24903
- - - - -
1b39363b by Patrick at 2024-09-27T06:10:19-04:00
Add entity information to HieFile #24544
Enhanced HieFile to capture entity information for identifiers, enabling better support for language tools and protocols. See issue #24544 for more details.
Work have been done:
* Introduction of new data type `EntityInfo` in `GHC.Iface.Ext.Types`.
* Add extra field `hie_entity_infos :: NameEntityInfo` to `HieFile`
to store the mapping from entity name to corresponding entity infos
in `GHC.Iface.Ext.Types`.
* Compute `EntityInfo` for each entity name in the HieAst from `TyThing,
Id, OccName` when generating the `HieFile` in `GHC.Iface.Ext.Ast`.
* Add test T24544 to test the generation of `EntityInfo`.
- - - - -
4f3618d8 by sheaf at 2024-09-27T06:10:57-04:00
The X86 SIMD patch.
This commit adds support for 128 bit wide SIMD vectors and vector
operations to GHC's X86 native code generator.
Main changes:
- Introduction of vector formats (`GHC.CmmToAsm.Format`)
- Introduction of 128-bit virtual register (`GHC.Platform.Reg`),
and removal of unused Float virtual register.
- Refactor of `GHC.Platform.Reg.Class.RegClass`: it now only contains
two classes, `RcInteger` (for general purpose registers) and `RcFloatOrVector`
(for registers that can be used for scalar floating point values as well
as vectors).
- Modify `GHC.CmmToAsm.X86.Instr.regUsageOfInstr` to keep track
of which format each register is used at, so that the register
allocator can know if it needs to spill the entire vector register
or just the lower 64 bits.
- Modify spill/load/reg-2-reg code to account for vector registers
(`GHC.CmmToAsm.X86.Instr.{mkSpillInstr, mkLoadInstr, mkRegRegMoveInstr, takeRegRegMoveInstr}`).
- Modify the register allocator code (`GHC.CmmToAsm.Reg.*`) to propagate
the format we are storing in any given register, for instance changing
`Reg` to `RegFormat` or `GlobalReg` to `GlobalRegUse`.
- Add logic to lower vector `MachOp`s to X86 assembly
(see `GHC.CmmToAsm.X86.CodeGen`)
- Minor cleanups to genprimopcode, to remove the llvm_only attribute
which is no longer applicable.
Tests for this feature are provided in the "testsuite/tests/simd" directory.
Fixes #7741
Keeping track of register formats adds a small memory overhead to the
register allocator (in particular, regUsageOfInstr now allocates more
to keep track of the `Format` each register is used at). This explains
the following metric increases.
-------------------------
Metric Increase:
T12707
T13035
T13379
T3294
T4801
T5321FD
T5321Fun
T783
-------------------------
- - - - -
10e431ef by sheaf at 2024-09-27T06:10:57-04:00
Use xmm registers in genapply
This commit updates genapply to use xmm, ymm and zmm registers, for
stg_ap_v16/stg_ap_v32/stg_ap_v64, respectively.
It also updates the Cmm lexer and parser to produce Cmm vectors rather
than 128/256/512 bit wide scalars for V16/V32/V64, removing bits128,
bits256 and bits512 in favour of vectors.
The Cmm Lint check is weakened for vectors, as (in practice, e.g. on X86)
it is okay to use a single vector register to hold multiple different
types of data, and we don't know just from seeing e.g. "XMM1" how to
interpret the 128 bits of data within.
Fixes #25062
- - - - -
8238fb2d by sheaf at 2024-09-27T06:10:57-04:00
Add vector fused multiply-add operations
This commit adds fused multiply add operations such as `fmaddDoubleX2#`.
These are handled both in the X86 NCG and the LLVM backends.
- - - - -
2cb7b748 by sheaf at 2024-09-27T06:10:57-04:00
Add vector shuffle primops
This adds vector shuffle primops, such as
```
shuffleFloatX4# :: FloatX4# -> FloatX4# -> (# Int#, Int#, Int#, Int# #) -> FloatX4#
```
which shuffle the components of the input two vectors into the output vector.
NB: the indices must be compile time literals, to match the X86 SHUFPD
instruction immediate and the LLVM shufflevector instruction.
These are handled in the X86 NCG and the LLVM backend.
Tested in simd009.
- - - - -
0d2428d6 by sheaf at 2024-09-27T06:10:57-04:00
Add Broadcast MachOps
This adds proper MachOps for broadcast instructions, allowing us to
produce better code for broadcasting a value than simply packing that
value (doing many vector insertions in a row).
These are lowered in the X86 NCG and LLVM backends. In the LLVM backend,
it uses the previously introduced shuffle instructions.
- - - - -
e6c19a41 by sheaf at 2024-09-27T06:10:57-04:00
Fix treatment of signed zero in vector negation
This commit fixes the handling of signed zero in floating-point vector
negation.
A slight hack was introduced to work around the fact that Cmm doesn't
currently have a notion of signed floating point literals
(see get_float_broadcast_value_reg). This can be removed once CmmFloat
can express the value -0.0.
The simd006 test has been updated to use a stricter notion of equality
of floating-point values, which ensure the validity of this change.
- - - - -
f496ff7f by sheaf at 2024-09-27T06:10:57-04:00
Add min/max primops
This commit adds min/max primops, such as
minDouble# :: Double# -> Double# -> Double#
minFloatX4# :: FloatX4# -> FloatX4# -> FloatX4#
minWord16X8# :: Word16X8# -> Word16X8# -> Word16X8#
These are supported in:
- the X86, AArch64 and PowerPC NCGs,
- the LLVM backend,
- the WebAssembly and JavaScript backends.
Fixes #25120
- - - - -
5dd2a423 by sheaf at 2024-09-27T06:10:57-04:00
Add test for C calls & SIMD vectors
- - - - -
f824e1ee by sheaf at 2024-09-27T06:10:58-04:00
Add test for #25169
- - - - -
d54db7f3 by sheaf at 2024-09-27T06:10:58-04:00
Fix #25169 using Plan A from the ticket
We now compile certain low-level Cmm functions in the RTS multiple
times, with different levels of vector support. We then dispatch
at runtime in the RTS, based on what instructions are supported.
See Note [realArgRegsCover] in GHC.Cmm.CallConv.
Fixes #25169
-------------------------
Metric Increase:
T10421
T12425
T18730
T1969
T9198
-------------------------
- - - - -
d5f8778a by sheaf at 2024-09-27T06:10:58-04:00
Fix C calls with SIMD vectors
This commit fixes the code generation for C calls, to take into account
the calling convention.
This is particularly tricky on Windows, where all vectors are expected
to be passed by reference. See Note [The Windows X64 C calling convention]
in GHC.CmmToAsm.X86.CodeGen.
- - - - -
f64bd564 by sheaf at 2024-09-27T06:10:58-04:00
X86 CodeGen: refactor getRegister CmmLit
This refactors the code dealing with loading literals into registers,
removing duplication and putting all the code in a single place.
It also changes which XOR instruction is used to place a zero value
into a register, so that we use VPXOR for a 128-bit integer vector
when AVX is supported.
- - - - -
ab12de6b by sheaf at 2024-09-27T06:10:58-04:00
X86 genCCall: promote arg before calling evalArgs
The job of evalArgs is to ensure each argument is put into a temporary
register, so that it can then be loaded directly into one of the
argument registers for the C call, without the generated code clobbering
any other register used for argument passing.
However, if we promote arguments after calling evalArgs, there is the
possibility that the code used for the promotion will clobber a register,
defeating the work of evalArgs.
To avoid this, we first promote arguments, and only then call evalArgs.
- - - - -
8fd12429 by sheaf at 2024-09-27T06:10:58-04:00
X86 genCCall64: simplify loadArg code
This commit simplifies the argument loading code by making the
assumption that it is safe to directly load the argument into register,
because doing so will not clobber any previous assignments.
This assumption is borne from the use of 'evalArgs', which evaluates
any arguments which might necessitate non-trivial code generation into
separate temporary registers.
- - - - -
12504a9f by sheaf at 2024-09-27T06:10:58-04:00
LLVM: propagate GlobalRegUse information
This commit ensures we keep track of how any particular global register
is being used in the LLVM backend. This informs the LLVM type
annotations, and avoids type mismatches of the following form:
argument is not of expected type '<2 x double>'
call ccc <2 x double> (<2 x double>)
(<4 x i32> arg)
- - - - -
2bb1e8df by Cheng Shao at 2024-09-27T06:11:35-04:00
Link bytecode from interface-stored core bindings in oneshot mode
!13042
Part of #T25090
If the flag `-fprefer-byte-code` is given when compiling a module
containing TH, GHC will use Core bindings stored in interfaces to
compile and link bytecode for splices.
This was only implemented for `--make` mode initially, so this commit
adds the same mechanism to oneshot mode (`-c`).
When an interface is loaded into the EPS in `loadInterface` that has
dehydrated Core bindings, an entry is added to the new field
`eps_iface_bytecode`, containing an IO action that produces a bytecode
`Linkable`, lazily processing the `mi_extra_decls` by calling
`loadIfaceByteCode`.
When Template Haskell dependencies are resolved in `getLinkDeps`, this
action is looked up after loading a module's interface.
If it exists, the action is evaluated and the bytecode is added to the
set of `Linkable`s used for execution of the splice; otherwise it falls
back on the traditional object file.
Metric Decrease:
MultiLayerModules
T13701
- - - - -
7cb7172e by Matthew Pickering at 2024-09-27T06:12:12-04:00
ci: Fix variable inheritence for ghcup-metadata testing job
Downstream in ghcup-ci we use the CONFIGURE_ARGS variable to determine
how to setup all the different jobs.
On the downstream trigger this was being inherited from the default
setting in .gitlab.yml file.
Therefore this led to job failures as the necessary CONFIGURE_ARGS were
not being passed to the configure script when installing the bindist.
See docs:
* https://docs.gitlab.com/ee/ci/yaml/#inherit
* https://docs.gitlab.com/ee/ci/yaml/#triggerforward
1. inherit:variables:fals
- This stops the global variables being inherited into the job and
hence forwarded onto the downstream job.
2. trigger:forward:*
- yaml_variables: true (default) pass yaml variables to downstream,
this is important to pass the upstream pipeline id to downstream.
- pipeline_variables: false (default) but don't pass pipeline
variables (normal environment variables).
Fixes #25294
- - - - -
9ffd6163 by Leo at 2024-09-27T16:26:01+05:30
Fix typo in Prelude doc for (>>=)
Fix a minor typo ("equivialent" instead of "equivalent") in the documentation for (>>=) in the prelude.
- - - - -
5745dbd3 by Vladislav Zavialov at 2024-09-27T16:26:52+05:30
Wildcard binders in type declarations (#23501)
Add support for wildcard binders in type declarations:
type Const a b = a -- BEFORE: the `b` had to be named
-- even if unused on the RHS
type Const a _ = a -- AFTER: the compiler accepts
-- a wildcard binder `_`
The new feature is part of GHC Proposal #425 "Invisible binders
in type declarations", and more specifically its amendment #641.
Just like a named binder, a wildcard binder `_` may be:
* plain: _
* kinded: (_ :: k -> Type)
* invisible, plain: @_
* invisible, kinded: @(_ :: k -> Type)
Those new forms of binders are allowed to occur on the LHSs of
data, newtype, type, class, and type/data family declarations:
data D _ = ...
newtype N _ = ...
type T _ = ...
class C _ where ...
type family F _
data family DF _
(Test case: testsuite/tests/typecheck/should_compile/T23501a.hs)
However, we choose to reject them in forall telescopes and
type family result variable binders (the latter being part
of the TypeFamilyDependencies extension):
type family Fd a = _ -- disallowed (WildcardBndrInTyFamResultVar)
fn :: forall _. Int -- disallowed (WildcardBndrInForallTelescope)
(Test case: testsuite/tests/rename/should_fail/T23501_fail.hs)
See the new Notes:
* Note [Type variable binders]
* Note [Wildcard binders in disallowed contexts]
To accommodate the new forms of binders, HsTyVarBndr was changed
as follows (demonstrated without x-fields for clarity)
-- BEFORE (ignoring x-fields and locations)
data HsTyVarBndr flag
= UserTyVar flag Name
| KindedTyVar flag Name HsKind
-- AFTER (ignoring x-fields and locations)
data HsTyVarBndr flag = HsTvb flag HsBndrVar HsBndrKind
data HsBndrVar = HsBndrVar Name | HsBndrWildCard
data HsBndrKind = HsBndrNoKind | HsBndrKind LHsKind
The rest of the patch is downstream from this change.
To avoid a breaking change to the TH AST, we generate fresh
names to replace wildcard binders instead of adding a dedicated
representation for them (as discussed in #641).
And to put a cherry on top of the cake, we now allow wildcards in
kind-polymorphic type variable binders in constructor patterns,
see Note [Type patterns: binders and unifiers] and the tyPatToBndr
function in GHC.Tc.Gen.HsType; example:
fn (MkT @(_ :: forall k. k -> Type) _ _) = ...
(Test case: testsuite/tests/typecheck/should_compile/T23501b.hs)
- - - - -
ff2bdca2 by Matthew Pickering at 2024-09-27T16:27:08+05:30
ci: Push perf notes from wasm jobs
It was observed in #25299 that we were failing to push performance
numbers from the wasm jobs.
In future we might want to remove this ad-hoc check but for now it's
easier to add another special case.
Towards #25299
- - - - -
4c76f75c by Zubin Duggal at 2024-09-27T16:44:00+05:30
Bump GHC version to 9.12
- - - - -
e4ac1b0d by Zubin Duggal at 2024-09-27T19:12:24+05:30
Bump GHC version to 9.13
- - - - -
da20cac1 by Andreas Klebinger at 2024-10-02T22:18:48-04:00
SpecConstr: Introduce a separate argument limit for forced specs.
We used to put no limit at all on specializations forced via the SPEC
argument. This isn't always reasonable so we introduce a very high limit
that applies to forced specializations, a flag to control it, and we now
emit a warning if we fail a specialization because we exceed the
warning.
Fixes #25197
- - - - -
39497eed by Andreas Klebinger at 2024-10-02T22:19:24-04:00
ghc-experimental: Expose primops and ghc extensions via GHC.PrimOps
This will be the new place for functions that would have gone into
GHC.Exts in the past but are not stable enough to do so now.
Addresses #25242
- - - - -
e9dc2690 by Sylvain Henry at 2024-10-02T22:20:06-04:00
RTS: cleanup timerfd file descriptors after a fork (#25280)
When we init a timerfd-based ticker, we should be careful to cleanup the
old file descriptors (e.g. after a fork).
- - - - -
64e876bc by Rodrigo Mesquita at 2024-10-02T22:20:43-04:00
determinism: Deterministic MonadGetUnique LlvmM
Update LlvmM to thread a unique deterministic supply (using UniqDSMT),
and use it in the MonadGetUnique instance.
This makes uniques sampled from LlvmM deterministic, which guarantees
object determinism with -fllvm.
Fixes #25274
- - - - -
36bbb167 by Matthew Pickering at 2024-10-02T22:21:18-04:00
Bump LLVM upper bound to allow LLVM 19
Also bumps the ci-images commit so that the deb12 images uses LLVM 19
for testing.
-------------------------
Metric Decrease:
size_hello_artifact_gzip
size_hello_unicode_gzip
-------------------------
Fixes #25295
- - - - -
0029ca91 by Matthew Pickering at 2024-10-02T22:21:54-04:00
configure: Allow happy-2.0.2
happy-2.0.2 can be used to compile GHC.
happy-2.0 and 2.0.1 have bugs which make it unsuitable to use.
The version bound is now == 1.20.* || >= 2.0.2 && < 2.1
Fixes #25276
- - - - -
92976985 by ARATA Mizuki at 2024-10-02T22:22:35-04:00
Use bundled llc/opt on Windows (#22438)
- - - - -
af59749a by Matthew Pickering at 2024-10-02T22:23:11-04:00
Fix registerArch for riscv64
The register allocator doesn't support vector registers on riscv64,
therefore advertise as NoVectors.
Fixes #25314
- - - - -
a49e66fc by Matthew Pickering at 2024-10-02T22:23:11-04:00
riscv: Avoid using csrr instruction to test for vector registers
The csrr instruction isn't allowed in qemu user-mode, and raises an
illegal instruction error when it is encountered.
Therefore for now, we just hard-code that there is no support for vector
registers since the rest of the compiler doesn't support vector
registers for riscv.
Fixes #25312
- - - - -
115a30e9 by Andreas Klebinger at 2024-10-02T22:23:11-04:00
Add support for fp min/max to riscv
Fixes #25313
- - - - -
f28b5992 by Ben Gamari at 2024-10-02T22:23:47-04:00
testsuite/perf: Report better error message on malformed note
Previously a malformed perf note resulted in very poor errors.
Here we slight improve this situation.
- - - - -
51377508 by Ben Gamari at 2024-10-02T22:23:47-04:00
testsuite: Handle division-by-zero more gracefully
Previously we would fail with an ZeroDivisionError.
Fixes #25321
- - - - -
50490075 by Matthew Pickering at 2024-10-03T05:55:13-04:00
ci: Add nightly & release ubuntu-22.04 jobs
This adds build of bindists on ubuntu-22.04 on nightly and release
pipelines.
We also update ghcup-metadata to provide ubuntu-22.04 bindists on
ubuntu-22.04.
Fixes #25317
- - - - -
9cf1cef5 by Zubin Duggal at 2024-10-03T05:55:49-04:00
haddock: Bump binary interface version to 46.
This allows haddock to give good error messages when being used on mismatched interface files.
We bump to 46 since GHC 9.12 uses version 45: https://gitlab.haskell.org/ghc/ghc/-/commit/362afd632032ee8f174690c3ffe0015…
This should have been done in e4ac1b0d281b85a0144d1ef6f84a1df00e236052 but was overlooked.
- - - - -
2293c0b7 by Andreas Klebinger at 2024-10-03T05:56:25-04:00
Change versionig of ghc-experimental to follow ghc versions.
Just like ghc-internal it will now use the @ProjectVersionForLib@ macro for versioning.
This means for ghc=9.10.1, ghc-experimental's version will be 9.1001.0 and so on.
This fixes #25289
- - - - -
876d6e0e by Ben Gamari at 2024-10-04T15:07:53+01:00
base: Add `HasCallStack` constraint to `ioError`
As proposed in core-libraries-committee#275.
- - - - -
9bfd9fd0 by Matthew Pickering at 2024-10-04T15:08:03+01:00
Fix toException method for ExceptionWithContext
Fixes #25235
- - - - -
ac004028 by Matthew Pickering at 2024-10-04T15:09:07+01:00
Exception rethrowing
Basic changes:
* Change `catch` function to propagate exceptions using the
WhileHandling mechanism.
* Introduce `catchNoPropagate`, which does the same as before, but
passes an exception which can be rethrown.
* Introduce `rethrowIO` combinator, which rethrows an exception with a
context and doesn't add a new backtrace.
* Introduce `tryWithContext` for a variant of `try` which can rethrow
the exception with it's original context.
* onException is modified to rethrow the original error rather than
creating a new callstack.
* Functions which rethrow in GHC.Internal.IO.Handle.FD,
GHC.Internal.IO.Handle.Internals, GHC.Internal.IO.Handle.Text, and
GHC.Internal.System.IO.Error are modified to not add a new callstack.
Implements CLC proposal#202 <https://github.com/haskell/core-libraries-committee/issues/202>
- - - - -
bcb293f2 by Cheng Shao at 2024-10-04T17:59:28-04:00
testsuite: remove accidentally checked in debug print logic
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68e2da5a by Rodrigo Mesquita at 2024-10-05T10:36:15-04:00
Deprecation for WarnCompatUnqualifiedImports
Fixes #25330
- - - - -
4327f0e8 by Andrew Lelechenko at 2024-10-05T10:36:52-04:00
Restrict Data.List.NonEmpty.unzip to NonEmpty (a, b) -> (NonEmpty a, NonEmpty b)
Implementing the final phase of CLC proposal https://github.com/haskell/core-libraries-committee/issues/86
- - - - -
ceca9efb by Cheng Shao at 2024-10-06T02:18:31+00:00
driver: fix runWorkerLimit on wasm
This commit fixes link-time unresolved symbol errors for sem_open etc
on wasm, by making runWorkerLimit always behave single-threaded. This
avoids introducing the jobserver logic into the final wasm module and
thus avoids referencing the posix semaphore symbols.
- - - - -
135fd1ac by Torsten Schmits at 2024-10-06T02:18:31+00:00
Parallelize getRootSummary computations in dep analysis downsweep
This reuses the upsweep step's infrastructure to process batches of
modules in parallel.
I benchmarked this by running `ghc -M` on two sets of 10,000 modules;
one with a linear dependency chain and the other with a binary tree.
Comparing different values for the number of modules per thread
suggested an optimum at `length targets `div` (n_cap * 2)`, with results
similar to this one (6 cores, 12 threads):
```
Benchmark 1: linear 1 jobs
Time (mean ± σ): 1.775 s ± 0.026 s [User: 1.377 s, System: 0.399 s]
Range (min … max): 1.757 s … 1.793 s 2 runs
Benchmark 2: linear 6 jobs
Time (mean ± σ): 876.2 ms ± 20.9 ms [User: 1833.2 ms, System: 518.6 ms]
Range (min … max): 856.2 ms … 898.0 ms 3 runs
Benchmark 3: linear 12 jobs
Time (mean ± σ): 793.5 ms ± 23.2 ms [User: 2318.9 ms, System: 718.6 ms]
Range (min … max): 771.9 ms … 818.0 ms 3 runs
```
Results don't differ much when the batch size is reduced to a quarter
of that, but there's significant thread scheduling overhead for a size
of 1:
```
Benchmark 1: linear 1 jobs
Time (mean ± σ): 2.611 s ± 0.029 s [User: 2.851 s, System: 0.783 s]
Range (min … max): 2.591 s … 2.632 s 2 runs
Benchmark 2: linear 6 jobs
Time (mean ± σ): 1.189 s ± 0.007 s [User: 2.707 s, System: 1.103 s]
Range (min … max): 1.184 s … 1.194 s 2 runs
Benchmark 3: linear 12 jobs
Time (mean ± σ): 1.097 s ± 0.006 s [User: 2.938 s, System: 1.300 s]
Range (min … max): 1.093 s … 1.101 s 2 runs
```
Larger batches also slightly worsen performance.
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535a2117 by Daniel Díaz at 2024-10-06T09:51:46-04:00
Clarify the meaning of "exactly once" in LinearTypes
Solves documentaion issue #25084.
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92f8939a by Krzysztof Gogolewski at 2024-10-06T09:52:22-04:00
Only allow (a => b) :: Constraint rather than CONSTRAINT rep
Fixes #25243
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4a2f0f13 by Alan Zimmerman at 2024-10-07T05:16:54-04:00
EPA: Remove unused hsCaseAnnsRest
We never populate it, so remove it.
- - - - -
5099057b by John Paul Adrian Glaubitz at 2024-10-07T05:17:40-04:00
rts: Fix invocation of __ieee_set_fp_control() on alpha-linux
Fixes the following error when building GHC on alpha-linux:
rts/posix/Signals.c: In function ‘initDefaultHandlers’:
rts/posix/Signals.c:709:5: error:
error: implicit declaration of function ‘ieee_set_fp_control’ [-Wimplicit-function-declaration]
709 | ieee_set_fp_control(0);
| ^~~~~~~~~~~~~~~~~~~
|
709 | ieee_set_fp_control(0);
|
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c9590ba0 by Teo Camarasu at 2024-10-07T05:18:17-04:00
Add changelog entries for !12479
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bf9c9566 by Matthew Pickering at 2024-10-07T13:19:30-04:00
javascript: Read fields of ObjectBlock lazily
When linking a module with a large dependency footprint too much of the
object files were forced during linking. This lead to a large amount of
memory taken up by thunks which would never be forced
On the PartialDownsweep test this halves the memory required (from 25G
to 13G).
Towards #25324
-------------------------
Metric Increase:
size_hello_obj
-------------------------
- - - - -
571329df by Matthew Pickering at 2024-10-07T13:20:06-04:00
ci: Run the i386 validation job when i386 label is set
This is helpful when making changes to base and must update the
javascript and i386 base exports files.
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e68f9aaf by Matthew Pickering at 2024-10-07T13:20:42-04:00
Rewrite partitionByWorkerSize to avoid pattern match checker bug
With `-g3` the pattern match checker would warn about these incomplete
patterns. This affects the debug_info builds on CI.
```
Pattern match(es) are non-exhaustive
In an equation for ‘go’:
Patterns of type ‘[a]’, ‘[a]’, ‘[SpecFailWarning]’ not matched:
(_:_) _ _
|
2514 | go [] small warnings = (small, warnings)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...
```
Workaround for #25338
- - - - -
d915dc8b by Arnaud Spiwack at 2024-10-07T19:23:00-04:00
Remove the wrapper/coercion-passing logic for submultiplicity checks
Instead, we use a dedicated DelayedError, which is emitted
systematically on submultiplicity checks, but is suppressed if we can
indeed solve the submultiplicity constraint with a reflexivity
coercion.
This way, we don't have to return anything from `tcSubMult`, which now
looks like a regular constraint check, the rest is implementation
detail. This removes all of the strange boilerplate that I'd been
struggling with under the previous implementation. Even if
submultiplicity checks are not properly constraints, this way it's
contained entirely within a `WantedConstraint`. Much more pleasant.
Closes #25128.
- - - - -
1d226116 by Sven Tennie at 2024-10-07T19:23:37-04:00
AArch64: Implement switch/jump tables (#19912)
This improves the performance of Cmm switch statements (compared to a
chain of if statements.)
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3fe621dd by Mario Blažević at 2024-10-07T19:24:18-04:00
Fixes #25256, missing parens inside TH-printed pattern type signature
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ea4b4391 by ARATA Mizuki at 2024-10-07T19:24:59-04:00
Better documentation for floatRange function
Closes #16479
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ff09205c by Andreas Klebinger at 2024-10-07T19:25:35-04:00
Adjust progress message for hadrian to include cwd.
Fixes #25335
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5fd320da by Sven Tennie at 2024-10-07T19:26:12-04:00
CCallConv test: Align argument types
The C calling convention / standard requires that arguments and their
values are of the same type.
- - - - -
c6e5fd3d by Cheng Shao at 2024-10-07T19:26:47-04:00
hadrian: remove unused ghciWithDebugger field from flavour config
This patch removes the ghciWithDebugger field from flavour config
since it's actually not used anywhere.
- - - - -
9c9c790d by sheaf at 2024-10-07T19:27:23-04:00
user's guide: update docs for X86 CPU flags
This commit updates the section of the user's guide pertaining to
X86 feature flags with the following changes:
- the NCG backend now supports SIMD, so remove all text
that says the contrary,
- the LLVM backend does not "automatically detect" features,
so remove any text that makes that claim.
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a1ecc826 by Sven Tennie at 2024-10-08T13:36:03-04:00
ci: RISCV64 cross-compile testing
This adds a validation job which tests that we can build a riscv64 cross
compiler and build a simple program using it. We do not currently run
the whole testsuite.
Towards #25254
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
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d5c2577f by Arnaud Spiwack at 2024-10-08T13:36:44-04:00
Remove unused accumulators in partition_errors
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55609880 by Andrzej Rybczak at 2024-10-09T16:41:46-04:00
Fix typo in the @since annotation of annotateIO
- - - - -
ef481813 by Alan Zimmerman at 2024-10-09T16:42:23-04:00
EPA: Remove [AddEpAnn] from (most of) HsExpr
EPA: introduce EpAnnLam for lambda annotationsi, and remove `glAA`
from `Parser.y`, it is the same as `glR`
EPA: Remove unused annotation from XOpApp
EPA: Use EpToken for XNPat and XNegApp
EPA: specific anns for XExplicitTuple / XTuplePat / sumPatParens.
EPA: Use specific annotation for MultiIf
EPA: Move annotations into FunRhs
EPA: Remove [AddEpAnn] from SigPat and ExprWithTySig
EPA: Remove [AddEpAnn] from ArithSeq
EPA: Remove [AddEpAnn] from HsProc
EPA: Remove [AddEpAnn] from HsStatic
EPA: Remove [AddEpAnn] from BindStmt
EPA: Remove [AddEpAnn] from TransStmt
EPA: Remove [AddEpAnn] from HsTypedSplice
EPA: Remove [AddEpAnn] from HsUntypedSpliceExpr
- - - - -
69960230 by Fabian Thorand at 2024-10-10T19:03:59+00:00
Handle exceptions from IO manager backend
If an IO manager backend throws, it will not actually have registered
the file descriptor. However, at that point, the IO manager state was
already updated to assume the file descriptor is being tracked, leading
to errors and an eventual deadlock down the line as documented in the
issue #21969.
The fix for this is to undo the IO manager state change in case the
backend throws (just as we already do when the backend signals that the
file type is not supported). The exception then bubbles up to user code.
That way we make sure that
1. the bookkeeping state of the IO manager is consistent with the
actions taken by the backend, even in the presence of unexpected
failures, and
2. the error is not silent and visible to user code, making failures
easier to debug.
- - - - -
1587cccf by Hassan Al-Awwadi at 2024-10-11T03:52:36-04:00
Put RdrName in the foExt field of FieldOcc
The main purpose of this commit is to rip RdrName out of FieldOcc, in
accordance with #21592, and as a side note it has simplified the method
we use to deal with ambiguity somewhat.
To do the first, we make FieldOccs store (LIdP p) instead of always
storing Located RdrName, and moved the readername to the extension
points where necessary.
For the second, well, we just turn an ambiguous RdrName into a unbound
Name through mkUnboundName. Later during disambiguateRecordBinds of the
type checking phase, we will try and do type-directed disambiguation based
on the rdrName field (for now), so this hack works out fine.
See Note [Ambiguous FieldOcc in record updates] for more details.
There are two additional minor changes in this commit:
* The HsRecSel constructor of HsExpr has been moved to the extension
constuctors, since its really GHC specific.
* HsProjection no longer has a Located DotFieldOcc as a field, but just a
regular DotFieldOcc, since DotFieldOcc already wraps a located
FieldLabelString
co-authored by: @Jade <Jade512(a)proton.me>
@alt-romes <rodrigo.m.mesquita(a)gmail.com>
- - - - -
2338a971 by Cheng Shao at 2024-10-11T03:53:13-04:00
driver: bail out when -fllvm is passed to GHC not configured with LLVM
This patch makes GHC bail out with an proper error message when it's
not configured with LLVM but users attempt to pass -fllvm, see #25011
and added comment for details.
Fixes #25011
Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com>
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78ad81ec by Cristiano Moraes at 2024-10-11T03:53:55-04:00
configure: Find C++ probing when GCC version is the latest but G++ is old #23118
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083703a1 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Consider Wanteds with rewriters as insoluble
This MR fixes #25325
See GHC.Tc.Types.Constraint, Note [Insoluble Wanteds], especially (IW2)
There is a small change in the error message for T14172, but it looks
entirely acceptable to me.
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0dfaeb66 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Wibbles
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09d24d82 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Spelling errors
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694489ed by sheaf at 2024-10-11T03:55:14-04:00
LLVM: use sse4.2 instead of sse42
LLVM expects the former instead of the latter since version 3.4.
Fixes #25019
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06ae8507 by sheaf at 2024-10-11T03:55:14-04:00
LLVM: make SSE4.2 imply +popcnt
For consistency with the NCG as well as with Clang and GCC, we make
the SSE4.2 feature flag imply +popcnt when using the LLVM backend.
Fixes #25353
- - - - -
3fe843c7 by Cheng Shao at 2024-10-11T03:55:50-04:00
Drop obsolete libffi Makefile
This patch drops obsolete libffi Makefile from the tree, given it's
completely unused since removal of make build system in !7094.
- - - - -
df70405c by Ben Gamari at 2024-10-11T03:56:26-04:00
ghc-internal: Fix incomplete matches on IOError
As noted in #25362, these incomplete matches were previously not being
warned about. They were easily addressed by use of
`GHC.Internal.Event.Windows.withException`.
Closes #25362.
- - - - -
8584504b by Matthew Pickering at 2024-10-11T03:57:02-04:00
compiler: Fix orientation of GHC.Hs.Doc boot file
We should be free to import things from Language.Haskell.Syntax in GHC
modules. Therefore the the boot file for the loop between ImpExp and
GHC.Hs.Doc was in the wrong place.
Issue #21592
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d029f170 by Ben Gamari at 2024-10-11T23:43:17-04:00
testsuite: Normalise trailing digits from hole fits output
The type variables in the holes fit output from
`abstract_refinement_hole_fits` is quite sensitive to compiler
configuration. Specifically, a slight change in the inlining
behavior of `throw` changes type variable naming in `(>>=)` and a few
others.
Ideally we would make hole fits output more deterministic but in the
meantime we simply normalise this difference away as it not relevant
to the test's goal.
- - - - -
da5d7d0d by Ben Gamari at 2024-10-11T23:43:17-04:00
base: Add test for #25066
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eb7ddae1 by Ben Gamari at 2024-10-11T23:43:17-04:00
base: Fix #25066
As noted in #25066, the exception backtrace proposal introduced a rather
subtle performance regression due to simplification producing Core which
the demand analyser concludes may diverge with a precise exception. The
nature of the problem is more completely described in the new Note
[Hiding precise exception signature in throw].
The (rather hacky) solution we use here hides the problematic
optimisation through judicious use of `noinline`. Ultimately however we
will want a more principled solution (e.g. #23847).
Fixes #255066
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/290
Metric Decrease:
T9872d
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0060ece7 by Ben Gamari at 2024-10-11T23:43:17-04:00
base: Improve documentation of Control.Exception.Backtrace
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18f532f3 by Ben Gamari at 2024-10-11T23:43:53-04:00
Bump process submodule to v1.6.25.0
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a9a3badf by Hassan Al-Awwadi at 2024-10-11T23:44:29-04:00
Move HsInteger and HsRat to an extension constructor
These constructors were only used during the TC stage,
or during template haskell. It seemed clear that it was
independent of the source syntax represented in L.H.S,
and thus we removed it according to #21592.
- - - - -
4dd30cba by Artem Pelenitsyn at 2024-10-11T23:45:09-04:00
Docs: Linear types: link Strict Patterns subsection
Also, fix a bug in RST with missing newline before a listing.
Co-authored-by: Arnaud Spiwack <arnaud(a)spiwack.net>
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adca5f2b by Ben Gamari at 2024-10-11T23:45:45-04:00
users guide: Address remaining TODOs in eventlog format docs
Closes #25296.
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9291c125 by Sylvain Henry at 2024-10-11T23:46:26-04:00
Fix z-encoding of tuples (#25364)
Tuples with prefix/suffix strings weren't always properly encoded with
their shortcut notations. Fix this.
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c08b68bc by Sven Tennie at 2024-10-11T23:47:01-04:00
Delete constants that can be deduced
There are macros in MachRegs.h to figure those out.
- - - - -
8b402da2 by Zubin Duggal at 2024-10-12T20:36:57+00:00
hadrian: Handle broken symlinks properly when creating source dist directories
If we have a broken symlink in the repository, don't try to `need` the symlink
or the target of the symlink. Attempting to do so has `shake` attempt to read the
target to compute its hash, which fails because the target doesn't exist.
- - - - -
16f97667 by Zubin Duggal at 2024-10-12T20:36:57+00:00
hadrian: exclude cabal.project.symlink.broken from source archives
Cabal 3.14 introduced a broken symlink in its testsuite. Unfortunately,
this broke our source distribution as we use use `tar --dereference` to avoid
issues with symlink compatibility on windows, and `tar --dereference` chokes
when it encounters any broken symlinks.
We can't get rid of `--dereference` because symlinks are generally broken on
windows, so the only option is to exclude this file from source archives.
see also https://github.com/haskell/cabal/issues/10442
- - - - -
f1a2c9fc by Zubin Duggal at 2024-10-12T20:36:57+00:00
Bump Cabal submodule to 3.14
Metric Decrease:
MultiLayerModulesTH_OneShot
Metric Increase:
haddock.Cabal
- - - - -
745dd590 by Ben Gamari at 2024-10-14T09:13:12-04:00
users-guide: Document GHCi :where command
Resolve #24509.
- - - - -
e9cc4699 by Alan Zimmerman at 2024-10-14T09:13:48-04:00
EPA: Remove [AddEpAnn] from IE, Pat and some Tys
EPA: Remove [AddEpAnn] from LazyPat
EPA: Remove [AddEpAnn] from RecordCon/RecordUpd/ConPat
EPA: Remove [AddEpAnn] from HsFieldBind
EPA: Remove [AddEpAnn] from PatSynBind
EPA: Remove [AddEpAnn] from IPBind
EPA: Remove [AddEpAnn] from FixSig
EPA: Remove [AddEpAnn] from activation rules
EPA: Remove [AddEpann] from SpecInstSig
EPA: Remove [AddEpAnn] from MinimalSig
EPA: Remove [AddEpAnn] from SCCFunSig
EPA: Remove [AddEpAnn] from CompleteMatchSig
EPA: Remove [AddEpAnn] from AnnSig, as used in PatSynSig, ClassOpSig, TypeSig
EPA: Remove [AddEpAnn] from IEThingAbs
EPA: Remove [AddEpAnn] from IEThingAll / IEThingWith
EPA: Remove [AddEpAnn] from IEModuleContents
EPA: Remove [AddEpAnn] from HsOpTy
EPA: Remove [AddEpAnn] for various binders
EPA: Remove [AddEpAnn] for HsIParamTy
- - - - -
81a570bf by Sebastian Graf at 2024-10-14T22:15:31-04:00
Desugaring, plus -Wincomplete-record-selectors
This commit does several related things:
* Major refactor of the handling of applications in the desugarer.
Now all applications are handled in `dsApp`, `ds_app` and related
functions. This dramatically simplifies the code and removes
complicated cruft that had accumulated. Hooray.
Fixes #25281.
* Improve the handling of -Wincomplete-record-selectors.
We now incorporate the result type of unsaturated record selector
applications as well as consider long-distance information in
getField applications.
Plus, the implmentation now builds the improved `dsApp` stuff
above, so it is much easier to understand.
Plus, incorporates improved error message wording suggested
by Adam Gundry in !12685.
Fixes #24824, #24891
See the long Note [Detecting incomplete record selectors]
* Add -Wincomplete-record-selectors to -Wall, as specified in
GHC Proposal 516.
To do this, I also had to add -Wno-incomplete-record-selectors
to the build flags for Cabal in GHC's CI. See
hadrian/src/Settings/Warnings.hs. We can remove this when
Cabal is updated so that it doesn't trigger the warning:
https://github.com/haskell/cabal/issues/10402
2.6% decrease in compile time allocation in RecordUpPerf
Metric Decrease:
RecordUpdPerf
- - - - -
ae7bc08e by Simon Peyton Jones at 2024-10-14T22:15:31-04:00
Elmininate incomplete record selectors
This patch is a pure refactor of GHC's source code, to avoid the use
of partial record selectors. It was provoked by adding
-Wincomplete-record-selectors to -Wall (as the GHC Proposal specified),
which in turn showed up lots of places where GHC was using incomplete
record selectors.
This patch does mostly-simple refactoring to make it clear to the pattern
match checker that there is in fact no partiality.
There is one externally-visible change: I changed the data type HoleFit
to split out the two cases
data HoleFit = TcHoleFit TcHoleFit | RawHoleFit SDoc
data TcHoleFit = HoleFit { ...lots of fields }
There are large swathes of code that just deal with `TcHoleFit`, and
having it as a separate data types makes it apparent that `RawHoleFit`
can't occur.
This makes it much better -- but the change is visible in the
HolePlugin interface. I decided that there are so few clients of this
API that it's worth the change.
I moved several functions from Language.Haskell.Syntax to GHC.Hs.
Reason, when instantiated at (GhcPass _), the extension data construtcor
is guaranteed unused, and that justifies omitted patterns in these
functions. By putting them in GHC.Hs.X I can specialise the type for
(GhcPass _) and thereby make the function total.
An interesting side-light is that there were a few local function
definitions without a type signature, like this one in GHC.Parser.Header
convImport (L _ i) = (ideclPkgQual i, reLoc $ ideclName i)
This is fully closed, and so is generalised; but that generalises
it to any old pass, not (GhcPass _), so GHC rightly complains about the
use of the selector `ideclPkgQual`. I added a type signature to `i`, thus
convImport (L _ (i::ImportDecl GhcPs))
= (ideclPkgQual i, reLoc $ ideclName i)
which specialised the function enough to make the record selector complete.
Quite a surprising consequence of local let-generalisation!
- - - - -
6a067226 by Simon Peyton Jones at 2024-10-14T22:15:31-04:00
Add -Werror=-Wno-error=incomplete-record-selectors to hadrian-multi
In the main MR, -Wall now includes -Wincomplete-record-selectors.
However `hadrian-multi` has many, many warnings about incomplete
record selectors, so this patch stops those warnings being treated
as errors. (See discussion on !13308.)
A better fix would be to remove the use of incomplete record
selectors, since each of them represents a potential crash.
- - - - -
edeafc14 by Ben Gamari at 2024-10-14T22:16:08-04:00
users-guide: Document field coalescence
- - - - -
55b83587 by ARATA Mizuki at 2024-10-14T22:16:49-04:00
LLVM backend: Use correct rounding for Float literals
Fixes #22033
- - - - -
e59fe5c6 by Hassan Al-Awwadi at 2024-10-15T08:25:33+00:00
Changed import from Ghc. module to L.H.S module
Progresses #21592
For some reason we still imported GHC.Types.Fixity when the definitino of Fixity and LexicalFixity have already been moved to Language.Haskell.Syntax.Basic. This fixes that for
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ab1767d5 by Simon Peyton Jones at 2024-10-15T23:45:04-04:00
Add a release-notes entry for -Wincomplete-record-selectors
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6f0a62db by ur4t at 2024-10-16T15:33:43+00:00
GHCi: fix improper location of ghci_history file
Fixes #24266
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5f67db48 by Alan Zimmerman at 2024-10-17T05:18:43-04:00
EPA: Remove [AddEpAnn] commit 3
EPA: Remove [AddEpAnn] from HsDocTy
EPA: Remove [AddEpAnn] from HsBangTy
EPA: Remove [AddEpAnn] from HsExplicitListTy
EPA: Remove [AddEpAnn] from HsExplicitTupleTy
EPA: Remove [AddEpAnn] from HsTypedBracket
EPA: Remove [AddEpAnn] from HsUntypedBracket
EPA: Remove [AddEpAnn] from PatBuilderOpApp
EPA: break out 'EpToken "|"' from ClassDecl anns
EPA: Remove [AddEpAnn] from ClassDecl
EPA: Remove [AddEpAnn] from SynDecl
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fbbbd010 by Daan Rijks at 2024-10-17T05:19:19-04:00
Expand the haddocks for Control.Category
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076c1a10 by Andrew Lelechenko at 2024-10-17T05:19:19-04:00
documentation: more examples for Control.Category
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90891962 by Cheng Shao at 2024-10-17T16:41:18+00:00
ghci: mitigate host/target word size mismatch in BCOByteArray serialization
This patch mitigates a severe host/target word size mismatch issue in
BCOByteArray serialization logic introduced since !12142, see added
note for detailed explanation.
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839ac52e by Cheng Shao at 2024-10-17T16:41:18+00:00
ghci: use plain malloc for mkConInfoTable on non-TNTC platforms
This patch avoids using mmap() to allocate executable memory for
mkConInfoTable on platforms without tables-next-to-code, see added
comment for explanation.
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a998f69d by Cheng Shao at 2024-10-17T16:41:18+00:00
ghc-internal: add missing CPPs for wasm
This patch adds some missing CPP guards to ghc-internal, given those
functions are non existent on wasm and would cause linking issues.
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71a471e7 by Cheng Shao at 2024-10-17T16:41:18+00:00
rts: rename prelude.js to prelude.mjs
This commit renames prelude.js to prelude.mjs for wasm backend rts
jsbits, and slightly adjusts the jsbits contents. This is for
preparing the implementation of dyld.mjs that contains wasm dynamic
linker logic, which needs to import prelude.mjs as a proper ESM
module.
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33d9db17 by Cheng Shao at 2024-10-17T16:41:18+00:00
rts: add __wrapped_freeJSVal
This commit wraps imported freeJSVal in a __wrapped_freeJSVal C
function for wasm backend RTS. In general, wasm imports are only
supposed to be directly called by C; they shouldn't be used as
function pointers, which confuses wasm-ld at link-time when generating
shared libraries.
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0d0a16a8 by Cheng Shao at 2024-10-17T16:41:18+00:00
rts: correct stale link in comment
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90a35c41 by Cheng Shao at 2024-10-17T16:41:18+00:00
rts: drop interpretBCO support from non-dyn ways on wasm
This commit drops interpretBCO support from non dynamic rts ways on
wasm. The bytecode interpreter is only useful when the RTS linker also
works, and on wasm it only works for dynamic ways anyway. An
additional benefit of dropping interpretBCO is reduction in code size
of linked wasm modules, especially since interpretBCO references
ffi_call which is an auto-generated large function in libffi-wasm and
unused by most user applications.
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98a32ec5 by Cheng Shao at 2024-10-17T16:41:18+00:00
rts: don't build predefined GloblRegs for wasm PIC mode
This commit wraps the predefined GlobalRegs in Wasm.S under a CPP
guard to prevent building for PIC mode. When building dynamic ways of
RTS, the wasm globals that represent STG GlobalRegs will be created
and supplied by dyld.mjs. The current wasm dylink convention doesn't
properly support exporting relocatable wasm globals at all, any wasm
global exported by a .so is assumed to be a GOT.mem entry.
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bef94bde by Cheng Shao at 2024-10-17T16:41:18+00:00
rts: fix conflicting StgRun definitions on wasm
This commit fixes conflicting StgRun definition when building dynamic
ways of RTS for wasm in unregisterised mode.
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a6a82cdb by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian: use targetSupportsRPaths predicate
This commit changes the hostSupportsRPaths predicate to
targetSupportsRPaths and use that to decide whether to pass
RPATH-related link-time options. It's not applied to stage0, we should
just use the default link-time options of stageBoot ghc.
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f232c872 by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian: disable internal-interpreter of ghc library when cross compiling
This commit disable the internal-interpreter flag of ghc library when
cross compiling, only external interpreter works in such cases.
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577c1819 by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian: enable internal-interpreter for ghc-bin stage0
This commit enables internal-interpreter flag for ghc-bin even when
compiling stage0, as long as target supports ghci. It enables ghci
functionality for cross targets that support ghci, since cross ghc-bin
is really stage0.
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c247f2ee by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian: fix CFLAGS for gmp shared objs on wasm
This commit adds -fvisibility=default to CFLAGS of gmp when building
for wasm. This is required to generate the ghc-bignum shared library
without linking errors. Clang defaults to -fvisibility=hidden for wasm
targets, which will cause issues when a symbol is expected to be
exported in a shared library but without explicit visibility attribute
annotation.
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775410fd by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian: re-enable PIC for gmp on wasm
This commit re-enables --with-pic=yes configuration option of gmp when
building for wasm, given we're about to include support for shared
libraries, TH and ghci.
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b45080a3 by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian: add the host_fully_static flavour transformer
This commit adds the host_fully_static flavour transformer to hadrian,
which ensures stage0 is fully statically linked while still permitting
stage1 libdir to contain shared libraries. This is intended to be used
by the wasm backend to build portable linux bindists that contain wasm
shared libraries.
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5043507c by Cheng Shao at 2024-10-17T16:41:18+00:00
ci: update wasm jobs configuration
This commit bumps ci-image revision to use updated wasm toolchain, and
use host_fully_static instead of fully_static for wasm jobs so to
ensure wasm shared libraries can be properly built.
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2956a3f7 by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian/testsuite: implement config.cross logic
This commit implements the config.cross field in the testsuite driver.
It comes from the "cross compiling" ghc info field for both
in-tree/out-of-tree GHC, and is an accurate predicate of whether we're
cross-compiling or not (compared to the precense of target emulator),
and is useful to implement predicates to assert the precense of
internal interpreter (only available on non-cross GHC) for tests that
do require it (e.g. plugins).
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8c74a0ed by Cheng Shao at 2024-10-17T16:41:18+00:00
hadrian/compiler: implement targetRTSLinkerOnlySupportsSharedLibs
This patch implements the targetRTSLinkerOnlySupportsSharedLibs
predicate in hadrian. Its definition in hadrian is the single source
of truth, and the information propagates to ghc settings file, ghc
driver and testsuite driver. It is used in various places to ensure
dynamic dependency is selected when the target RTS linker only
supports loading dynamic code.
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b4c3c340 by Cheng Shao at 2024-10-17T16:41:18+00:00
testsuite: don't use host cpu features when testing cross ghc
This patch disables CPU feature detection logic when testing cross
GHC, since those features don't make sense for the target anyway.
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3c21b696 by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: implement & use req_plugins predicate
This commit implements req_plugins predicate to indicate that the test
requires plugin functionality. Currently this means cross GHC is
disabled since internal-interpreter doesn't work in cross GHC yet.
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93b8af80 by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: make use of config.interp_force_dyn
This commit takes config.interp_force_dyn into consideration when
setting up TH/ghci way flags.
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94673d41 by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: bump T17572 timeout
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2b5efc2d by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: bump T22744 pre_cmd timeout
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45102e2a by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: skip terminfo_so for cross ghc
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05e40406 by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: fix shared library size tests for cross ghc
This commit fixes shared library size tests (e.g. array_so in
testsuite/tests/perf/size/all.T) when testing cross ghc. Previously,
if shared library file extension of host and target differs, those
tests will fail with framework errors due to not finding the right
files.
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fa68f833 by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: skip ghc api tests that attempt to spawn processes inside wasm
This commit skips a few ghc api tests on wasm, since they would
attempt to spawn processes inside wasm, which is not supported at all.
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1241c04e by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: skip T22840 due to broken -dtag-inference-checks on wasm
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78c8b900 by Cheng Shao at 2024-10-17T16:41:19+00:00
testsuite: ensure $(ghciWayFlags) can be overridden
This commit revises boilerplate.mk in testsuite as well as a few other
places, to ensure the tests that do make use of $(ghciWayFlags) can
receive the right $(ghciWayFlags) from testsuite driver config.
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47989ecc by Cheng Shao at 2024-10-17T16:41:24+00:00
testsuite: skip rdynamic on wasm
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fefb4ea1 by Cheng Shao at 2024-10-17T16:41:24+00:00
testsuite: skip T2615 on wasm
This commit marks T2615 as skip on wasm, given LD_* environment
variables aren't supported on wasm anyway.
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77c79762 by Cheng Shao at 2024-10-17T16:41:24+00:00
testsuite: mark MultiLayerModulesTH_Make/MultiLayerModulesTH_OneShot as fragile on wasm
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69bb4745 by Cheng Shao at 2024-10-17T16:41:24+00:00
testsuite: fix T16180 on wasm
This commit fixes T16180 on wasm once TH support is flipped on. The
fix is simply adding right asm code for wasm.
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621c753d by Cheng Shao at 2024-10-17T16:41:24+00:00
driver: fix -fexternal-interpreter flag for JS backend
Previously, -fexternal-interpreter is broken for JS backend, since GHC
would attempt to launch a non-existent ghc-iserv* executable. This
commit fixes it by adjusting pattern matching order in
setTopSessionDynFlags.
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80aa8983 by Cheng Shao at 2024-10-17T16:41:24+00:00
driver: use interpreterDynamic predicate in preloadLib
This commit use the interpreterDynamic predicate in preloadLib to
decide if we should do dynLoadObjs instead of loadObj. Previously we
used hostIsDynamic which was only written with non-cross internal
interpreter in mind.
The testsuite is also adjusted to remove hard-wired -fPIC flag for
cbits (doesn't work in i386 RTS linker in vanilla way, #25260) and
properly pass ghc_th_way_flags to ghc.
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74411461 by Cheng Shao at 2024-10-17T16:41:24+00:00
compiler: fix Cmm dynamic CLabels for wasm
This commit fixes the handling of dynamic CLabels for the wasm
backend. Just do the simplest handling: preserve the original CLabel,
both unreg/NCG backends can handle them properly without issue.
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f6abaf13 by Cheng Shao at 2024-10-17T16:41:24+00:00
driver: add necessary compile-time flags for wasm PIC mode
This commit adds necessary compile-time flags when compiling for wasm
PIC mode, see added comment for detailed explanation.
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9745fcfb by Cheng Shao at 2024-10-17T16:41:24+00:00
driver: add necessary link-time flags for wasm shared libs
This commit adds necessary link-time flags for wasm shared libs, see
added comments for detailed explanation.
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649aae00 by Cheng Shao at 2024-10-17T16:41:24+00:00
driver: enforce -fno-use-rpaths for wasm
This commit ensures the GHC driver never passes any RPATH-related
link-time flags on wasm, which is not supported at all.
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47baa904 by Cheng Shao at 2024-10-17T16:41:24+00:00
driver: ensure static archives are picked when linking static .wasm modules
This commit ensures static archives are picked when linking .wasm
modules which are supposed to be fully static, even when ghc may be
invoked with -dynamic, see added comment for explanation.
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fc3a5591 by Cheng Shao at 2024-10-17T16:41:24+00:00
compiler: fix dynamic_too_enable for targets that require dynamic libraries
This commit fixes dynamic_too_enable for targets whose RTS linker can
only load dynamic code.
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94ef949e by Cheng Shao at 2024-10-17T16:41:24+00:00
compiler: fix checkNonStdWay for targets that require dynamic libraries
This commit fixes checkNonStdWay to ensure that for targets whose RTS
linker can only load dynamic code, the dynamic way of object is
selected.
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88e99248 by Cheng Shao at 2024-10-17T16:41:24+00:00
ghc-bin: enforce dynamic way when the target requires so
This commit makes ghc-bin use dynamic way when it is doing interactive
stuff on certain targets whose RTS linker can only handle dynamic
code.
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549582ef by Cheng Shao at 2024-10-17T16:41:24+00:00
hadrian/ghci: add wasm dyld
This commit adds the wasm dynamic linker implementation, as well as
ghci logic to call it and hadrian logic to install it to the correct
location. See the top-level note in utils/jsffi/dyld.mjs for more
details.
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b562e3a6 by Cheng Shao at 2024-10-17T16:41:29+00:00
driver: fix getGccSearchDirectory for wasm target
This commit fixes getGccSearchDirectory logic for wasm target, ensures
the correct search directory containing libc.so etc can be found by
GHC. getGccSearchDirectory is also exported so it can be used
elsewhere to obtain the wasi-sdk libdir and pass to the dyld script.
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2d6107dc by Cheng Shao at 2024-10-17T16:41:29+00:00
driver: add wasm backend iserv logic
This commit adds wasm backend iserv logic to the driver, see added
comments for explanation.
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61f5baa5 by Cheng Shao at 2024-10-17T16:41:29+00:00
compiler: add PIC support to wasm backend NCG
This commit adds support for generating PIC to the wasm backend NCG.
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652e7239 by Cheng Shao at 2024-10-17T16:41:29+00:00
hadrian/compiler: flip on support for shared libs & ghci for wasm
This commit flips on the support for shared libs and ghci for the wasm
target, given all required support logic has been added in previous
commits.
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74a1f681 by Cheng Shao at 2024-10-17T16:41:29+00:00
testsuite: flip on support for shared libs, TH & ghci for wasm
This commit flips on support for shared libs, TH & ghci for wasm in
the testsuite, given support has been landed in previous commits.
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525d451e by Cheng Shao at 2024-10-17T23:03:34-04:00
Revert "compiler: start deprecating cmmToRawCmmHook"
This reverts commit 1c064ef1f3e1aa2afc996e962ad53effa99ec5f4. Turns
out the GHC-WPC project does use it to observe Cmm in the pipeline,
see #25363.
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5bcfefd5 by Cheng Shao at 2024-10-17T23:04:09-04:00
rts: fix pointer overflow undefined behavior in bytecode interpreter
This patch fixes an unnoticed undefined behavior in the bytecode
interpreter. It can be caught by building `rts/Interpreter.c` with
`-fsanitize=pointer-overflow`, the warning message is something like:
```
rts/Interpreter.c:1369:13: runtime error: addition of unsigned offset to 0x004200197660 overflowed to 0x004200197658
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior rts/Interpreter.c:1369:13
rts/Interpreter.c:1265:13: runtime error: addition of unsigned offset to 0x004200197660 overflowed to 0x004200197658
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior rts/Interpreter.c:1265:13
rts/Interpreter.c:1645:13: runtime error: addition of unsigned offset to 0x0042000b22f8 overflowed to 0x0042000b22f0
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior rts/Interpreter.c:1645:13
```
Whenever we do something like `SpW(-1)`, the negative argument is
implicitly converted to an unsigned integer type and causes pointer
arithmetic overflow. It happens to be harmless for most targets since
overflowing would wrap the result to desired value, but it's still
coincidental and undefined behavior. Furthermore, it causes real
damage to the wasm backend, given clang-20 will emit invalid wasm code
that crashes at run-time for this kind of C code! (see
https://github.com/llvm/llvm-project/issues/108770)
The fix here is adding some explicit casts to ensure we always use the
signed `ptrdiff_t` type as right hand operand of pointer arithmetic.
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eb67875f by Matthew Craven at 2024-10-18T12:18:35+00:00
Bump transformers submodule
The svg image files mentioned in transformers.cabal were
previously not checked in, which broke sdist generation.
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366a1109 by Matthew Craven at 2024-10-18T12:18:35+00:00
Remove reference to non-existent file in haddock.cabal
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826852e9 by Matthew Craven at 2024-10-18T12:18:35+00:00
Move tests T11462 and T11525 into tests/tcplugins
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dbe27152 by Matthew Craven at 2024-10-18T12:18:35+00:00
Repair the 'build-cabal' hadrian target
Fixes #23117. Fixes #23281. Fixes #23490.
This required:
* Updating the bit-rotted compiler/Setup.hs and its setup-depends
* Listing a few recently-added libraries and utilities
in cabal.project-reinstall
* Setting allow-boot-library-installs to 'True' since Cabal
now considers the 'ghc' package itself a boot library for
the purposes of this flag
Additionally, the allow-newer block in cabal.project-reinstall
was removed. This block was probably added because when the
libraries/Cabal submodule is too new relative to the cabal-install
executable, solving the setup-depends for any package with a custom
setup requires building an old Cabal (from Hackage) against the
in-tree version of base, and this can fail un-necessarily due to
tight version bounds on base. However, the blind allow-newer can
also cause the solver to go berserk and choose a stupid build plan
that has no business succeeding, and the failures when this happens
are dreadfully confusing. (See #23281 and #24363.)
Why does setup-depends solving insist on an old version of Cabal? See:
https://github.com/haskell/cabal/blob/0a0b33983b0f022b9697f7df3a69358ee9061…
The right solution here is probably to use the in-tree cabal-install
from libraries/Cabal/cabal-install with the build-cabal target rather
than whatever the environment happens to provide. But this is left
for future work.
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b3c00c62 by Matthew Craven at 2024-10-18T12:18:35+00:00
Revert "CI: Disable the test-cabal-reinstall job"
This reverts commit 38c3afb64d3ffc42f12163c6f0f0d5c414aa8255.
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a04959b8 by Daneel Yaitskov at 2024-10-19T09:34:15-04:00
base: speed up traceEventIO and friends when eventlogging is turned off #17949
Check the RTS flag before doing any work with the given lazy string.
Fix #17949
Co-authored-by: Michael Peyton Jones <me(a)michaelpj.com>
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
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eff16c22 by Matthew Pickering at 2024-10-19T21:55:55-04:00
ci: Add support for ONLY_JOBS variable to trigger any validation pipeline
By setting the ONLY_JOBS variable to the name of the job (or multiple
jobs), the resulting
pipeline will include a validation job for that pipeline.
For example - if you set ONLY_JOBS="x86_64-linux-ubuntu22_04-validate"
then a ubuntu22_04 job will be included in the validation pipeline. This
is useful for testing specific jobs.
Fixes #25332
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280b6278 by Zubin Duggal at 2024-10-19T21:56:31-04:00
rel-eng: ghcup metadata generation: generated yaml anchors with meaningful names
(cherry picked from commit d83f5bd730a8aef37d8a38b3560590d9798f8e45)
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25edf849 by Alan Zimmerman at 2024-10-19T21:57:08-04:00
EPA: Remove [AddEpAnn] Commit 4
EPA: Remove [AddEpAnn] from DataDecl
This is quite a big change.
The most important part is moving the annotations into HsDataDefn,
using a specific annotation data type.
It has a knock-on to everything that uses HsDataDefn
EPA: Remove [AddEpAnn] for FunDep
EPA: Remove [AddEpann] from FamilyDecl
EPA: Remove [AddEpAnn] From InjectivityAnn
EPA: Remove [AddEpAnn] from DefaultDecl
EPA: Remove [AddEpAnn] from RuleDecls
EPA: Remove [AddEpAnn] from Warnings
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d5f42045 by Luite Stegeman at 2024-10-20T16:34:47-04:00
Interpreter: Add locking for communication with external interpreter
This adds locking to communication with the external interpreter
to prevent concurrent tasks interfering with each other. This
fixes Template Haskell with the external interpreter in parallel (-j)
builds.
Fixes #25083
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d6bfea76 by Matthew James Kraai at 2024-10-20T16:35:29-04:00
Use monospace font for "Either a b" in fmap docs
The documentation for fmap shows "`Either a b`" in the default font
instead of showing "Either a b" in a monospace font.
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4bc7f9c8 by Luite Stegeman at 2024-10-20T16:36:15-04:00
Parser: remove non-ASCII characters from Parser.y
Non-ASCII characters in the source causes a problem with the default
Haskell Language Server setup in VSCode. Two characters seems to have
been left in by accident.
Workaround for #25396
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7f61ed4e by Alan Zimmerman at 2024-10-21T06:39:45-04:00
EPA: Remove [AddEpAnn] Commit 5
EPA: Remove [AddEpAnn] from AnnPragma
EPA: Remove [AddEpAnn] From ForeignDecl
EPA: Remove [AddEpAnn] from RoleAnnotDecl
EPA: Remove [AddEpAnn] from StandaloneKindSig
EPA: Remove [AddEpAnn] From HsDeriving
EPA: Remove [AddEpAnn] from ConDeclField
EPA: Remove [AddEpAnn] from ConDeclGADT
EPA: Remove [AddEpAnn] from ConDeclH98
EPA: Remove [AddEpAnn] from ClsInstDecl
- - - - -
f8694fe7 by Cheng Shao at 2024-10-21T06:40:21-04:00
wasm: bump dyld v8 heap size limit
This patch adds `--max-old-space-size=8192` to wasm dyld shebang
arguments to bump V8 heap size limit. The default limit
(`heap_size_limit` returned by `v8.getHeapStatistics()`) is
dynamically determined and a bit too low under certain workloads, and
V8 would waste too much CPU time to garbage collect old generation
heap more aggressively. Bumping the limit to 8G doesn't imply dyld
would really take that much memory at run-time, but it lessens V8 heap
stress significantly.
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d328d173 by Luite Stegeman at 2024-10-21T12:39:18+00:00
Add requestTickyCounterSamples to GHC.Internal.Profiling
This allows the user to request ticky counters to be written to
the eventlog at specific times.
See #24645
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71765b1d by Simon Peyton Jones at 2024-10-21T20:55:00-04:00
Move defaulting code into a new module
GHC.Tc.Solver had reached 4,000 lines -- although quite a lot of them
are comments.
This MR
* Adds the new module GHC.Tc.Solver.Default, which has all the
complex, but well modularised, defaulting code
* Moves a bit of code from GHC.Tc.Solver into the existing
GHC.Tc.Solver.Solve. Notably solveWanteds and simplifyWantedsTcM,
which are called from GHC.Tc.Solver.Default
It's a pure refactor. No code changes.
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a398227b by Simon Peyton Jones at 2024-10-21T20:55:00-04:00
Improve the generalisation code in Solver.simplifyInfer
The code in `decideQuantification` has become quite complicated.
This MR straightens it out, adds a new Note, and on the way
fixes #25266.
See especially Note [decideAndPromoteTyVars] which is is where
all the action happens in this MR.
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148059fe by Andrzej Rybczak at 2024-10-21T20:55:40-04:00
Adjust catches to properly rethrow exceptions
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13302 implemented exception
rethrowing proposal, but it didn't adjust `catches`. This fixes it.
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25121dbc by doyougnu at 2024-10-22T09:38:18-04:00
linker: add --optimistic-linking flag
This patch adds:
- the --optimistic-linking flag which binds unknown symbols in the
runtime linker to 0xDEADBEEF instead of exiting with failure
- The test T25240 which tests these flags using dead code in the FFI system.
- closes #25240
This patch is part of the upstreaming haskell.nix patches project.
- - - - -
f19e076d by doyougnu at 2024-10-22T09:38:18-04:00
ghc-internal: hide linkerOptimistic in MiscFlags
- - - - -
edc02197 by Cheng Shao at 2024-10-22T09:38:54-04:00
hadrian: fix bindist executable wrapper logic for cross targets
This commit fixes an oversight of hadrian wrapper generation logic:
when doing cross compilation, `wrapper` is called on executable names
with cross prefix, therefore we must use `isSuffixOf` when matching to
take the cross prefix into account. Also add missing cross prefix to
ghci wrapper content and fix hsc2hs wrapper logic.
- - - - -
edf3bdf5 by Andreas Klebinger at 2024-10-22T16:30:42-04:00
mkTick: Push ticks through unsafeCoerce#.
unsafeCoerce# doesn't exist at runtime so we should treat it like a Cast
for the purpose of mkTick.
This means if we have `{-# SCC foo #-} (unsafeCoerce# trivial_expr))` we
now push the scope part of the cost centre up to `trivial_expr` at which
point we can discard it completely if the expression is trivial enough.
This fixes #25212.
- - - - -
1bdb1317 by Cheng Shao at 2024-10-22T16:31:17-04:00
hadrian: enable late-CCS for perf flavour as well
This patch enables late-CCS for perf flavour so that the testsuite can
pass for perf as well. Fixes #25308.
- - - - -
fde12aba by Cheng Shao at 2024-10-22T16:31:54-04:00
hadrian: make sure ghc-bin internal-interpreter is disabled for stage0 when not cross compiling
This patch disables internal-interpreter flag for stage0 ghc-bin when
not cross compiling, see added comment for explanation. Fixes #25406.
- - - - -
6ab8d751 by ignatiusm at 2024-10-24T01:23:35-04:00
Improve heap overflow exception message (#25198)
Catch heap overflow exceptions and suggest using `+RTS -M<size>`.
Fix #25198
- - - - -
b3f7fb80 by Rodrigo Mesquita at 2024-10-24T01:24:12-04:00
determinism: Interface re-export list det
In 'DocStructureItem' we want to make sure the 'Avails' are sorted, for
interface file determinism. This commit introduces 'DetOrdAvails', a
newtype that should only be constructed by sorting Avails with
'sortAvails' unless the avails are known to be deterministically
ordered. This newtype is used by 'DocStructureItem' where 'Avails' was
previously used to ensure the list of avails is deterministically sorted
by construction.
Note: Even though we order the constructors and avails in the interface
file, the order of constructors in the haddock output is still
determined from the order of declaration in the source. This was also
true before, when the list of constructors in the interface file <docs>
section was non-deterministic. Some haddock tests such as
"ConstructorArgs" observe this (check the order of constructors in
out/ConstructorArgs.html vs src/ConstructorArgs.hs vs its interface file)
The updated tests are caused by haddock corners where the order in the
source is not preserved (and was non-deterministic before this PR):
* Module header in the latex backend
* Re-export of pattern synonyms associated to a datatype (#25342)
Fixes #25304
- - - - -
e39c8c99 by Rodrigo Mesquita at 2024-10-24T01:24:12-04:00
Revert "ci: Allow abi-test to fail."
After #25304, the abi-test with interface and object determinism
succeeds.
This reverts commit 7b37afc9f3e79559055488998ee73187886a0e00.
- - - - -
7b1b0c6d by Alan Zimmerman at 2024-10-24T13:07:02-04:00
EPA: reduce [AddEpann] in AnnList
Remove it from the `al_rest` field, and make `AnnList` parameterized
on a type to be used in `al_rest`, for the various use cases.
- - - - -
4a00731e by Rodrigo Mesquita at 2024-10-24T13:07:38-04:00
Fix -fobject-determinism flag definition
The flag should be defined as an fflag to make sure the
-fno-object-determinism flag is also an available option.
Fixes #25397
- - - - -
55e4b9f2 by Sebastian Graf at 2024-10-25T07:01:54-04:00
CorePrep: Attach evaldUnfolding to floats to detect more values
See `Note [Pin evaluatedness on floats]`.
- - - - -
9f57c96d by Sebastian Graf at 2024-10-25T07:01:54-04:00
Make DataCon workers strict in strict fields (#20749)
This patch tweaks `exprIsConApp_maybe`, `exprIsHNF` and friends, and Demand
Analysis so that they exploit and maintain strictness of DataCon workers. See
`Note [Strict fields in Core]` for details.
Very little needed to change, and it puts field seq insertion done by Tag
Inference into a new perspective: That of *implementing* strict field semantics.
Before Tag Inference, DataCon workers are strict. Afterwards they are
effectively lazy and field seqs happen around use sites. History has shown
that there is no other way to guarantee taggedness and thus the STG Strict Field
Invariant.
Knock-on changes:
* I reworked the whole narrative around "Tag inference".
It's now called "EPT enforcement" and I recycyled the different overview
Notes into `Note [EPT enforcement]`.
* `exprIsHNF` previously used `exprOkForSpeculation` on unlifted arguments
instead of recursing into `exprIsHNF`. That regressed the termination
analysis in CPR analysis (which simply calls out to `exprIsHNF`), so I made
it call `exprOkForSpeculation`, too.
* There's a small regression in Demand Analysis, visible in the changed test
output of T16859: Previously, a field seq on a variable would give that
variable a "used exactly once" demand, now it's "used at least once",
because `dmdTransformDataConSig` accounts for future uses of the field
that actually all go through the case binder (and hence won't re-enter the
potential thunk). The difference should hardly be observable.
* The Simplifier's fast path for data constructors only applies to lazy
data constructors now. I observed regressions involving Data.Binary.Put's
`Pair` data type.
* Unfortunately, T21392 does no longer reproduce after this patch, so I marked
it as "not broken" in order to track whether we regress again in the future.
Fixes #20749, the satisfying conclusion of an annoying saga (cf. the ideas
in #21497 and #22475).
Compiler perf generally improves, sometimes drastically:
Baseline
Test Metric value New value Change
--------------------------------------------------------------------------------
ManyConstructors(normal) ghc/alloc 3,629,760,116 3,711,852,800 +2.3% BAD
MultiLayerModulesTH_OneShot(normal) ghc/alloc 2,502,735,440 2,565,282,888 +2.5% BAD
T12707(normal) ghc/alloc 804,399,798 791,807,320 -1.6% GOOD
T17516(normal) ghc/alloc 964,987,744 1,008,383,520 +4.5%
T18140(normal) ghc/alloc 75,381,152 49,860,560 -33.9% GOOD
T18698b(normal) ghc/alloc 232,614,457 184,262,736 -20.8% GOOD
T18923(normal) ghc/alloc 62,002,368 58,301,408 -6.0% GOOD
T20049(normal) ghc/alloc 75,719,168 70,494,368 -6.9% GOOD
T3294(normal) ghc/alloc 1,237,925,833 1,157,638,992 -6.5% GOOD
T9233(normal) ghc/alloc 686,490,105 635,166,688 -7.5% GOOD
geo. mean -0.7%
minimum -33.9%
maximum +4.5%
I looked at T17516. It seems we do a few more simplifier iterations and end up
with a larger program. It seems that some things inline more, while other things
inline less. I don't see low-hanging fruit.
I also looked at MultiLayerModulesTH_OneShot. It appears we generate a strange
join point in the `getUnique` method of `Uniquable GHC.Unit.Types.Module` that
should better call-site inline, but does not. Perhaps with !11492.
NoFib does not seem affected much either:
+-------------------------------++--+------------+-----------+---------------+-----------+
| || | base/ | std. err. | T20749/ (rel) | std. err. |
+===============================++==+============+===========+===============+===========+
| spectral/last-piece || | 7.263e8 | 0.0% | +0.62% | 0.0% |
+===============================++==+============+===========+===============+===========+
| geom mean || | +0.00% | | | |
+-------------------------------++--+------------+-----------+---------------+-----------+
I had a look at last-piece. Nothing changes in stg-final, but there is a bit
of ... movement around Data.Map.insert's use of GHC.Exts.lazy that is gone in
stg-final.
Co-Authored-By: Jaro Reinders <jaro.reinders(a)gmail.com>
Metric Decrease:
T12707
T18140
T18698b
T18923
T19695
T20049
T3294
T9233
T21839c
Metric Increase:
ManyConstructors
MultiLayerModulesTH_OneShot
- - - - -
0225249a by Simon Peyton Jones at 2024-10-25T07:02:32-04:00
Some renaming
This is a pure refactor, tidying up some inconsistent naming:
isEqPred --> isEqClassPred
isEqPrimPred --> isEqPred
isReprEqPrimPred --> isReprEqPred
mkPrimEqPred --> mkNomEqPred
mkReprPrimEqPred --> mkReprEqPred
mkPrimEqPredRold --> mkEqPredRole
Plus I moved mkNomEqPred, mkReprEqPred, mkEqPredRolek
from GHC.Core.Coercion to GHC.Core.Predicate
where they belong. That means that Coercion imports Predicate
rather than vice versa -- better.
- - - - -
15a3456b by Ryan Hendrickson at 2024-10-25T07:02:32-04:00
compiler: Fix deriving with method constraints
See Note [Inferred contexts from method constraints]
Co-authored-by: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
- - - - -
dbc77ce8 by Alan Zimmerman at 2024-10-25T18:20:13+01:00
EPA: Remove AddEpann commit 7
EPA: Remove [AddEpAnn] from HYPHEN in Parser.y
The return value is never used, as it is part of the backpack
configuration parsing.
EPA: Remove last [AddEpAnn] usages
Remove residual usage in GHC. It is still used
- In haddock TTG extension point definitions (to be removed)
- Some check-exact residual, to be removed
- Comments around DisambECP in PostProcess
EPA: Clean up [AddEpAnn] from check-exact
There is one left, to be cleaned up when we remove AddEpann itself
EPA: Remove [AddEpAnn] from haddock
The TTG extension points need a value, it is not critical what that
value is, in most cases.
EPA: Remove AddEpAnn from HsRuleAnn
EPA: Remove AddEpAnn from HsCmdArrApp
- - - - -
23ddcc01 by Simon Peyton Jones at 2024-10-26T12:44:34-04:00
Fix optimisation of InstCo
It turned out (#25387) that the fix to #15725 was not quite right:
commit 48efbc04bd45d806c52376641e1a7ed7278d1ec7
Date: Mon Oct 15 10:25:02 2018 +0200
Fix #15725 with an extra Sym
Optimising InstCo is quite subtle, and the invariants surrounding
the LiftingContext in the coercion optimiser were not stated explicitly.
This patch refactors the InstCo optimisation, and documents these
invariants. See
* Note [Optimising InstCo]
* Note [The LiftingContext in optCoercion]
I also did some refactoring of course:
* Instead of a Bool swap-flag, I am not using GHC.Types.Basic.SwapFlag
* I added some invariant-checking the coercion-construction functions
in GHC.Core.Coercion.Opt. (Sadly these invariants don't hold during
typechecking, becuase the types are un-zonked, so I can't put these
checks in GHC.Core.Coercion.)
- - - - -
589fea7f by Cheng Shao at 2024-10-27T05:36:38-04:00
ghcid: use multi repl for ghcid
- - - - -
d52a0475 by Andrew Lelechenko at 2024-10-27T05:37:13-04:00
documentation: add motivating section to Control.Monad.Fix
- - - - -
301c3b54 by Cheng Shao at 2024-10-27T05:37:49-04:00
wasm: fix safari console error message related to import("node:timers")
This patch fixes the wasm backend JSFFI prelude script to avoid
calling `import("node:timers")` on non-deno hosts. Safari doesn't like
it and would print an error message to the console. Fixes
https://gitlab.haskell.org/ghc/ghc-wasm-meta/-/issues/13.
- - - - -
9f02dfb5 by Simon Peyton Jones at 2024-10-27T15:10:08-04:00
Add a missing tidy in UnivCo
We were failing to tidy the argument coercions of a UnivCo, which
led directly to #25391.
The fix is, happily, trivial.
I don't have a small repro case (it came up when building horde-ad,
which uses typechecker plugins). It should be possible to make a
repro case, by using a plugin (which builds a UnivCo) but I decided
it was not worth the bother. The bug is egregious and easily fixed.
- - - - -
853050c3 by Andrew Lelechenko at 2024-10-27T15:10:44-04:00
Bump text submodule to 2.1.2
- - - - -
90746a59 by Andrew Lelechenko at 2024-10-27T15:10:44-04:00
hadrian: allow -Wunused-imports for text package
- - - - -
8a6691c3 by Alan Zimmerman at 2024-10-27T19:44:48+00:00
EPA: Remove AddEpAnn Commit 8/final
EPA: Remove AddEpAnn from AnnList
EPA: Remove AddEpAnn from GrhsAnn
This is the last actual use
EPA: Remove NameAdornment from NameAnn
Also rework AnnContext to use EpToken, and AnnParen
EPA: Remove AddEpAnn. Final removal
There are now none left, except for in a large note/comment in
PostProcess, describing the historical transition to the
disambiguation infrastructure
- - - - -
d5e7990c by Alan Zimmerman at 2024-10-28T21:41:05+00:00
EPA: Remove AnnKeywordId.
This was used as part of AddEpAnn, and is no longer needed.
Also remove all the haddock comments about which of are attached to
the various parts of the AST. This is now clearly captured in the
appropriate TTG extension points, and the `ExactPrint.hs` file.
- - - - -
e08b8370 by Serge S. Gulin at 2024-10-29T23:17:01-04:00
JS: Re-add optimization for literal strings in genApp (fixes #23479)
Based on https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10588/
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
Co-authored-by: Andrei Borzenkov <root(a)sandwitch.dev>
Co-authored-by: Danil Berestov <goosedb(a)yandex.ru>
-------------------------
Metric Decrease:
T25046_perf_size_gzip
size_hello_artifact
size_hello_artifact_gzip
size_hello_unicode
size_hello_unicode_gzip
-------------------------
- - - - -
e3496ef6 by Cheng Shao at 2024-10-29T23:17:37-04:00
compiler: remove unused hscDecls/hscDeclsWithLocation
This patch removes unused `hscDecls`/`hscDeclsWithLocation` functions
from the compiler, to reduce maintenance burden when doing
refactorings related to ghci.
- - - - -
b1eed26f by Cheng Shao at 2024-10-29T23:18:13-04:00
testsuite: add T25414 test case marked as broken
This commit adds T25414 test case to demonstrate #25414. It is marked
as broken and will be fixed by the next commit.
- - - - -
e70009bc by Cheng Shao at 2024-10-29T23:18:13-04:00
driver: fix foreign stub handling logic in hscParsedDecls
This patch fixes foreign stub handling logic in `hscParsedDecls`.
Previously foreign stubs were simply ignored here, so any feature that
involve foreign stubs would not work in ghci (e.g. CApiFFI). The patch
reuses `generateByteCode` logic and eliminates a large chunk of
duplicate logic that implements Core to bytecode generation pipeline
here. Fixes #25414.
- - - - -
1d7cd7fe by Andreas Klebinger at 2024-10-30T19:14:28-04:00
Add since tag for -fwrite-if-compression in user guide.
Partial fix for #25395
- - - - -
b349fd1b by Alan Zimmerman at 2024-10-30T19:15:04-04:00
EPA: Remove some unused functions
- - - - -
f859d61c by Alan Zimmerman at 2024-10-30T19:15:04-04:00
EPA: use explicit vertical bar token for ExplicitSum / SumPat
- - - - -
721ac00d by Ben Gamari at 2024-10-31T08:37:38-04:00
rts/Disassembler: Fix encoding of BRK_FUN instruction
The offset of the CC field was not updated after the encoding change in
b85b11994e0130ff2401dd4bbdf52330e0bcf776. Fix this.
Fixes #25374.
- - - - -
0bc94360 by Alan Zimmerman at 2024-10-31T08:38:15-04:00
EPA: Bring in last EpToken usages
For import declarations, NameAnnCommas and NPlusKPat.
And remove anchor, it is the same as epaLocationRealSrcSpan.
- - - - -
0b11cdc0 by sheaf at 2024-10-31T08:38:55-04:00
Assert that ctEvCoercion is called on an equality
Calling 'ctEvCoercion' on non-equality constraints is always incorrect.
We add an assertion to this function to detect such cases; for example
a type-checking plugin might erroneously do this.
- - - - -
ea458779 by doyougnu at 2024-11-01T18:11:33-04:00
ghc-internal: strict, unboxed src loc ranges
- closes: #20449
- See CLC proposal: #55
- - - - -
778ac793 by Kazuki Okamoto at 2024-11-01T18:12:13-04:00
No haddock markup in doctest line
- - - - -
cf0deeaf by Andreas Klebinger at 2024-11-02T17:54:52-04:00
Reword -fexpose-overloaded-unfoldings docs.
This should make them slightly clearer. Fixes #24844
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
- - - - -
1c21e7d4 by Andreas Klebinger at 2024-11-02T17:55:29-04:00
Compile T25062 simd tests even if we can't run them.
Helps avoid them being utterly broken.
Fixes #25341
- - - - -
573cad4b by Cheng Shao at 2024-11-02T17:56:04-04:00
Remove unused USE_REPORT_PRELUDE code paths from the tree
This patch removes unused `USE_REPORT_PRELUDE` code paths from the
tree. They have been present since the first git revision
4fb94ae5e5d632748fa2e6c35e259eccc5a1a3f4, and might have been useful
for debugging purposes many years ago, but these code paths are never
actually built. Removing these ease maintenance of relevant modules in
the future, and also allows us to get rid of `CPP` extension in those
modules as a nice byproduct.
- - - - -
97f600c6 by Hassan Al-Awwadi at 2024-11-04T15:52:12+00:00
Refactored BooleanFormula to be in line with TTG (#21592)
There are two parts to this commit.
* We moved the definition of BooleanFormula over to L.H.S.BooleanFormula
* We parameterized the BooleanFormula over the pass
The GHC specific details of BooleanFormula remain in Ghc.Data.BooleanFormula.
Because its parameterized over the pass its no longer a functor or
traversable, but we defined bfMap and bfTraverse for the cases where we
needed fmap and traverse originally. Most other changes are just churn.
-------------------------
Metric Decrease:
MultiLayerModulesTH_OneShot
-------------------------
- - - - -
d4fd3580 by Andreas Klebinger at 2024-11-05T07:36:16-05:00
ghc-heap: Fix incomplete selector warnings.
Use utility functions instead of selectors to read partial attributes.
Part of fixing #25380.
- - - - -
fdd9f62a by Peter Trommler at 2024-11-05T07:36:51-05:00
PPC NCG: Implement fmin and fmax
- - - - -
8e217256 by Mike Pilgrem at 2024-11-07T04:34:20-05:00
Re CLC #293 - Don't specify Data.List.NonEmpty in terms of partial
See https://github.com/haskell/core-libraries-committee/issues/293
`List.init` had already been driven out of `tails1` by 21fc180bec93d964a7f4ffdf2429ef6f74b49ab6 but this specification also avoided partial `fromList`, so I preferred it.
The `changelog.md` for `base` is updated, with an entry added under `base-4.22.0.0`.
- - - - -
346e4cd1 by Zubin Duggal at 2024-11-07T04:34:57-05:00
release: copy zip files into the correct directory
Fixes #25446
- - - - -
bbdbe225 by Zubin Duggal at 2024-11-07T04:34:57-05:00
release: Sign .gz bindists too
Fixes #25447
- - - - -
0c722e14 by Hécate Kleidukos at 2024-11-07T04:35:37-05:00
hadrian: Enforce the usage of GHC >=9.8.1 for ghci-multi
GHC 9.6 no good when it comes to multi-repl stuff, despite being well
within the range of n-2 releases for bootstrapping, when the script was
adapted to load haddock, in !12851
- - - - -
d8f8a1c3 by Sylvain Henry at 2024-11-07T19:27:46-05:00
Handle the special ghc-prim:GHC.Prim module in the compiler
Before this patch, some custom hacks were necessary in ghc-prim's
Setup.hs to register the GHC.Prim (virtual) module and in Hadrian to
generate haddocks properly.
In this patch we special-case this module in the compiler itself instead
(which it already is, see ghcPrimIface in GHC.Iface.Load). From
Cabal/Hadrian's perspective GHC.Prim is now just a normal autogenerated
module.
This simplification is worthwhile on its own. It was found while looking
into the work needed for #24453 which aims to merge ghc-prim,
ghc-bignum, and ghc-internal. It's also one step closer to remove
ghc-prim's custom setup.
- - - - -
a55adc8e by Cheng Shao at 2024-11-07T19:28:22-05:00
Clean up obsolete CPP guarded code paths from the tree
This patch cleans up obsolete CPP guarded code paths from the tree.
The minimum supported boot GHC version is 9.6, and all the pre-9.6 era
code paths can be removed.
- - - - -
9ede97f3 by Cheng Shao at 2024-11-07T19:28:58-05:00
Remove obsolete executable wrappers from the tree
The executable wrappers are handled by hadrian and bindist Makefile.
The various .wrapper scripts in the tree are unused since removal of
Make build system, so this patch removes them all.
- - - - -
7d42b2df by tristian at 2024-11-07T19:29:40-05:00
TcRnDuplicateDecls now suggests to use the DuplicateRecordFields extension.
Fixes: !24627
- - - - -
e56ed179 by Zubin Duggal at 2024-11-11T15:16:35+05:30
testsuite: normalise some versions in callstacks
(cherry picked from commit f230e29f30d0c1c566d4dd251807fcab76a2710e)
- - - - -
a28fc903 by Zubin Duggal at 2024-11-11T15:16:35+05:30
testsuite: use -fhide-source-paths to normalise some backpack tests
(cherry picked from commit b19de476bc5ce5c7792e8af1354b94a4286a1a13)
- - - - -
ed16d303 by Zubin Duggal at 2024-11-11T15:16:36+05:30
testsuite/haddock: strip version identifiers and unit hashes from html tests
(cherry picked from commit fbf0889eadc410d43dd5c1657e320634b6738fa5)
- - - - -
e45e5836 by Zubin Duggal at 2024-11-11T15:16:36+05:30
haddock: oneshot tests can drop files if they share modtimes. Stop this by
including the filename in the key.
Ideally we would use `ghc -M` output to do a proper toposort
Partially addresses #25372
(cherry picked from commit e78c7ef96e395f1ef41f04790aebecd0409b92b9)
- - - - -
9104e6eb by Zubin Duggal at 2024-11-11T15:16:36+05:30
testsuite: fix normalisation of T9930fail so that it doesn't get tripped up by ghc executable (ARGV[0]) differences
(cherry picked from commit a79a587e025d42d34bb30e115fc5c7cab6c1e030)
- - - - -
2c31264a by Zubin Duggal at 2024-11-11T15:16:36+05:30
testsuite: normalise windows file seperators
(cherry picked from commit f858875e03b9609656b542aaaaff85ad0a83878a)
- - - - -
2807f91b by Zubin Duggal at 2024-11-11T15:21:30+05:30
testsuite: Also match <VERSION> placeholders when normalising callsites
- - - - -
c02add17 by Ben Gamari at 2024-11-12T01:22:11-05:00
configure: Check version number validity
Here we verify the previously informal invariant that stable release
version numbers must have three components, preventing costly failed
releases.
Specifically, the check fails in the following scenarios:
* `version=9.13` while `RELEASE=YES` since this would imply a
release made from an unstable branch
* `version=9.13.0` since unstable versions should only have two
components
* `version=9.12` since this has the wrong number of version components
for a stable branch
Fixes #25390.
- - - - -
747fd322 by Teo Camarasu at 2024-11-12T01:22:49-05:00
docs: link to #14474 in the template-haskell docs
- - - - -
6d96bb62 by Zubin Duggal at 2024-11-12T01:23:25-05:00
testsuite: normalise execvp vs exec differences in process tests
Fixes #25431
- - - - -
502e6711 by Torsten Schmits at 2024-11-12T01:24:01-05:00
fix test lint that accumulated while the checks were broken
I didn't fix the issues flagged by the #ifdef linter because it were so
many that it seemed like the rule has become obsolete.
- - - - -
223a4cb5 by Torsten Schmits at 2024-11-12T01:24:02-05:00
test driver: fix file collection for regex linters
When a testsuite linter is executed with the `tracked` strategy, the
driver runs `git ls-tree` to collect eligible files.
This appears to have ceased producing any paths – `ls-tree` restricts
its results to the current working directory, which is
`testsuite/tests/linters` in this case.
As a quick fix, this patch changes the working directory to match
expectations.
- - - - -
9ad9ac63 by Alan Zimmerman at 2024-11-12T01:24:39-05:00
EPA: Capture location of '_' for wild card type binder
And keep track of promotion status in HsExplicitTupleTy, so the
round-trip ppr test works for it.
Updates Haddock output too, using the PromotionFlag in
HsExplicitTupleTy.
Closes #25454
- - - - -
c37b96fa by Cheng Shao at 2024-11-12T01:25:15-05:00
wasm: fix setImmediate() implementation for Cloudflare Workers
This patch fixes setImmediate() implementation for Cloudflare Workers
in the wasm backend's js prelude script. Cloudflare Workers doesn't
support the MessageChannel API, and we use a setTimeout() based
fallback implementation in this case.
- - - - -
bea8ea4c by Cheng Shao at 2024-11-12T01:25:15-05:00
wasm: fix FinalizationRegistry logic for Cloudflare Workers
This patch fixes FinalizationRegistry related logic for Cloudflare
Workers in wasm backend js post linker. Cloudflare Workers doesn't
support FinalizationRegistry, in this case we use a dummy
implementation that doesn't do anything.
- - - - -
00d551bf by Cheng Shao at 2024-11-13T08:48:21-05:00
Remove obsolete cross-port script
This patch removes the obsolete cross-port script in the tree. The
script was based on the legacy Make build system which has been pruned
from the tree long ago. For hadrian, proper support for two-stage
bootstrapping onto a new unsupported platform is a work in progress in
!11444.
- - - - -
75a2eae4 by Cheng Shao at 2024-11-13T08:48:58-05:00
hadrian: fix bindist makefile for wasm32-wasi target
This patch fixes one incoherent place between bindist makefile and
hadrian logic: I forgot to include wasi/wasm32 in
OsSupportsGHCi/ArchSupportsGHCi as well. And this results in incorrect
settings file generated after installing the bindist, and "Use
interpreter"/"Have interpreter" fields incorrectly have "NO" values
where they should be "YES" like --info output of in-tree version.
- - - - -
0614abef by Alan Zimmerman at 2024-11-13T08:49:34-05:00
EPA: Correctly capture leading semis in decl list
Closes #25467
- - - - -
00d58ae1 by Sebastian Graf at 2024-11-13T15:21:23-05:00
DmdAnal: Make `prompt#` lazy (#25439)
This applies the same treatment to `prompt#` as for `catch#`.
See `Note [Strictness for mask/unmask/catch/prompt]`.
Fixes #25439.
- - - - -
93233a66 by Ben Gamari at 2024-11-13T15:21:59-05:00
boot: Do not attempt to update config.sub
While Apple ARM hardware was new we found that the autoconf scripts
included in some boot packages were too old. As a mitigation for this,
we introduced logic in the `boot` script to update the `config.sub`
with that from the GHC tree. However, this causes submodules which
have `config.sub` committted to appear to be dirty. This is a
considerable headache.
Now since `config.sub` with full platform support is more common we can
remove `boot`'s `config.sub` logic.
Fixes #19574.
- - - - -
fa66fa64 by Ryan Scott at 2024-11-14T19:05:00-05:00
Add regression test for #16234
Issue #16234 was likely fixed by !9765. This adds a regression test to ensure
that it remains fixed.
Fixes #16234.
- - - - -
bfe64df8 by Matthew Pickering at 2024-11-14T19:05:36-05:00
ghc-internal: Update to Unicode 16
This patch updates the automatically generated code for querying unicode
properties to unicode 16.
Fixes #25402
- - - - -
1fd83f86 by Ben Gamari at 2024-11-14T19:06:13-05:00
configure: Accept happy-2.1.2
happy-2.1 was released in late Oct 2024. I have confirmed that master
bootstraps with it. Here we teach configure to accept this tool.
Fixes #25438.
- - - - -
aa58fc5b by Ben Gamari at 2024-11-14T19:06:49-05:00
rts: Tighten up invariants of PACK
- - - - -
8aa4c10a by Ben Gamari at 2024-11-14T19:06:49-05:00
testsuite: Fix badly escaped literals
Use raw string literals to ensure that `\s` is correctly interpreted as
a character class.
- - - - -
0e084029 by Ben Gamari at 2024-11-14T19:06:49-05:00
rts: Improve documentation of SLIDE bytecode instruction
- - - - -
9bf3663b by Ben Gamari at 2024-11-14T19:06:49-05:00
rts/Interpreter: Assert that TEST*_P discriminators are valid
- - - - -
1f668511 by Ben Gamari at 2024-11-14T19:06:49-05:00
rts/Interpreter: Improve documentation of TEST*_P instructions
- - - - -
59e0a770 by Cheng Shao at 2024-11-14T19:07:25-05:00
misc: improve clangd compile_flags.txt flags
This patch improves the compile_flags.txt config used to power clangd
for the rts C codebase. The flags in the file are sampled & deduped
from a real stage1 build with clang-19 and vastly improves the IDE
accuracy when hacking the rts.
For maximum code coverage under the default settings,
compile_flags.txt defaults to threaded+profiled+dynamic+debug way.
This does not mean profdyn needs to be actually built in _build/stage1
for IDE to work. To activate IDE for other RTS ways, simply remove one
of the -D flags at the end of compile_flags.txt and restart clangd.
- - - - -
c2c562e0 by Ben Gamari at 2024-11-14T19:08:01-05:00
testsuite: Don't consider untracked files in dirtiness check
Considering trees containing untracked files as dirty is a bridge too
far. The chance of an untracked file significantly affecting measured
performanced metrics is quite small whereas not collecting measurements
is quite inconvenient for some workflows. We now ignore untracked files
in the dirtiness check.
Fixes #25471.
- - - - -
ed2ed6c5 by Cheng Shao at 2024-11-14T19:08:37-05:00
testsuite: add regression test T25473
This commit adds regression test T25473 marked as broken due to #25473.
It will be fixed in the subsequent commit.
- - - - -
bd0a8b7e by Cheng Shao at 2024-11-14T19:08:37-05:00
wasm: fix foreign import javascript "wrapper" in TH/ghci
This patch fixes foreign import javascript "wrapper" in wasm backend's
TH/ghci by fixing the handling of dyld/finalization_registry magic
variables. Fixes T25473 and closes #25473.
- - - - -
f1b0bc32 by Ben Gamari at 2024-11-14T19:09:13-05:00
rts/linker: Make FreeBSD declarations proper prototypes
The iconv declarations for FreeBSD were previously not prototypes,
leading to warnings.
- - - - -
086cbbc1 by Ben Gamari at 2024-11-14T19:09:13-05:00
base: Drop redundant import in FreeBSD ExecutablePath implementation
- - - - -
79ecd199 by Ben Gamari at 2024-11-14T19:09:13-05:00
compiler: Fix partial selector warnings in GHC.Runtime.Heap.Inspect
- - - - -
1acb73bf by Andrew Lelechenko at 2024-11-15T06:10:47-05:00
gitlab: mention CLC in MR template
- - - - -
8f2e0832 by Ben Gamari at 2024-11-15T06:11:24-05:00
rts: Allow use of GNU-stack notes on FreeBSD
Previously we gated use of GNU-style non-executable stack notes to only
apply on Linux. However, these are also supported by FreeBSD, which also
uses ELF. Fix this.
Fixes #25475.
- - - - -
2c427cb0 by Ben Gamari at 2024-11-16T05:27:40-05:00
rts: Fix EINTR check in timerfd ticker
When `poll` failed we previously checked that `errno == -EINTR` to
silence the failure warning. However, this is wrong as `errno` values
are generally not negated error codes (in contrast to many system call
results, which is likely what the original author had in mind).
Fixes #25477.
- - - - -
a0fa4941 by Ben Gamari at 2024-11-16T05:28:16-05:00
rts: Increase gen_workspace alignment to 128 bytes on AArch64
Increase to match the 128-byte cache-line size of Apple's ARMv8
implementation.
Closes #25459.
- - - - -
142d8afa by Ben Gamari at 2024-11-16T16:20:47-05:00
rts/RtsFlags: Refactor size parsing
This makes a number of improvements mentioned in #20201:
* fail if the argument cannot be parsed as a number (`-Mturtles`)
* fail if an unrecognized unit is given (e.g. `-M1x`)
- - - - -
b7a146e5 by Ben Gamari at 2024-11-16T16:20:47-05:00
testsuite: Add tests for RTS flag parsing error handling
See #20201.
- - - - -
ddb7afa6 by Ben Gamari at 2024-11-16T16:21:23-05:00
users guide: Mention language extensions in equality constraints discussion
As suggested in #24127, mention the language extensions necessary for
usage of equality constriants in their documentation.
Closes #24127.
- - - - -
36133dac by Ben Gamari at 2024-11-16T16:21:23-05:00
users-guide/9.14.1-notes: Fix list syntax
- - - - -
888de658 by Ben Gamari at 2024-11-16T16:21:23-05:00
users-guide/debug-info: Fix duplicate flag descriptions
- - - - -
f120e427 by Ben Gamari at 2024-11-16T16:21:23-05:00
users-guide: Fix reference to 9.14.1 release notes
- - - - -
8e975032 by Ben Gamari at 2024-11-16T16:21:59-05:00
Introduce GHC.Tc.Plugin.lookupTHName
This makes it significantly more convenient (and less
GHC-version-dependent) to resolve a template-haskell name into a GHC
Name.
As proposed in #24741.
- - - - -
a0e168ec by ARATA Mizuki at 2024-11-16T16:22:40-05:00
x86 NCG SIMD: Lower packFloatX4#, insertFloatX4# and broadcastFloatX4# to SSE1 instructions
Fixes #25441
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
3936bf1b by sheaf at 2024-11-16T16:23:22-05:00
X86 NCG: allow VXOR at scalar floating-point types
The NCG can emit VXOR instructions at scalar floating-point types,
but the pretty-printer would panic instead of emitting the appropriate
VXORPS/VXORPD instructions. This patch rectifies that oversight.
Fixes #25455
- - - - -
d9dff93a by Ben Gamari at 2024-11-16T16:23:58-05:00
rts: Fix platform-dependent pointer casts
Previously we had unnecessary (and incorrect) platform-dependent casts
to turn `OSThreadIds`s into a integer. We now just uniformly cast first
to a `uintptr_t` (which is always safe, regardless of whether
`OSThreadId` is a pointer), and then cast to the desired integral type.
This fixes a warning on musl platforms.
- - - - -
6d95cdb8 by Ben Gamari at 2024-11-16T16:24:34-05:00
testsuite: Mark encoding004 as broken on FreeBSD
Due to #22003, CP936 fails to roundtrip:
```diff
== CP936
+Failed to roundtrip given mutant byte at index 891 (251 /= 123 at index 891)
+Failed to roundtrip given mutant byte at index 1605 (197 /= 69 at index 1605)
+Failed to roundtrip given mutant byte at index 2411 (235 /= 107 at index 2411)
+Failed to roundtrip given mutant byte at index 6480 (208 /= 80 at index 6480)
+Failed to roundtrip given mutant byte at index 6482 (210 /= 82 at index 6482)
+Failed to roundtrip given mutant byte at index 6484 (212 /= 84 at index 6484)
+Failed to roundtrip given mutant byte at index 6496 (224 /= 96 at index 6496)
+Failed to roundtrip given mutant byte at index 7243 (203 /= 75 at index 7243)
+Failed to roundtrip given mutant byte at index 7277 (237 /= 109 at index 7277)
+Failed to roundtrip given mutant byte at index 8027 (219 /= 91 at index 8027)
+Failed to roundtrip given mutant byte at index 8801 (225 /= 97 at index 8801)
```
- - - - -
26e86984 by Ben Gamari at 2024-11-18T04:05:31-05:00
hadrian: Allow haddock options to be passed via key-value settings
- - - - -
6e68b117 by Matthew Pickering at 2024-11-18T04:06:07-05:00
Exception rethrowing
Basic changes:
* Change `catch` function to propagate exceptions using the
WhileHandling mechanism.
* Introduce `catchNoPropagate`, which does the same as before, but
passes an exception which can be rethrown.
* Introduce `rethrowIO` combinator, which rethrows an exception with a
context and doesn't add a new backtrace.
* Introduce `tryWithContext` for a variant of `try` which can rethrow
the exception with it's original context.
* onException is modified to rethrow the original error rather than
creating a new callstack.
* Functions which rethrow in GHC.Internal.IO.Handle.FD,
GHC.Internal.IO.Handle.Internals, GHC.Internal.IO.Handle.Text, and
GHC.Internal.System.IO.Error are modified to not add a new callstack.
Implements CLC proposal#202 <https://github.com/haskell/core-libraries-committee/issues/202>
- - - - -
a4e0d235 by Rodrigo Mesquita at 2024-11-18T04:06:07-05:00
exceptions: Improve the message layout as per #285
This commit fixes the layout of the additional information included when
displaying an exception, namely the type of the exception.
It also fixes the default handler's heading message to work well
together with the improved display message of SomeException.
CLC proposal#285
- - - - -
284ffab3 by Rodrigo Mesquita at 2024-11-18T04:06:07-05:00
Display type and callstack of exception on handler
This commit changes the Exception instance of SomeException to *simply*
display the underlying exception in `displayException`. The augmented
exception message that included the type and backtrace of the exception
are now only printed on a call to `displayExceptionWithInfo`.
At a surface level, existing programs should behave the same since the
`uncaughtExceptionHandler`, which is responsible for printing out uncaught
exceptions to the user, will use `displayExceptionWithInfo` by default.
However, unlike the instance's `displayException` method, the
`uncaughtExceptionHandler` can be overriden with
`setUncaughtExceptionHandler`. This makes the extra information opt-in
without fixing it the instance, which can be valuable if your program
wants to display uncaught exceptions to users in a user-facing way
(ie without backtraces).
This is what was originally agreed for CLC#231 or CLC#261 with regard to
the type of the exception information.
The call stack also becoming part of the default handler rather than the
Exception instance is an ammendment to CLC#164.
Discussion of the ammendment is part of CLC#285.
- - - - -
36cddd2c by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Remove redundant CallStack from exceptions
Before the exception backtraces proposal was implemented, ErrorCall
accumulated its own callstack via HasCallStack constraints, but
ExceptionContext is now accumulated automatically.
The original ErrorCall mechanism is now redundant and we get a duplicate
CallStack
Updates Cabal submodule to fix their usage of ErrorCallWithLocation to ErrorCall
CLC proposal#285
Fixes #25283
- - - - -
7a74330b by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Freeze call stack in error throwing functions
CLC proposal#285
- - - - -
3abf31a4 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
De-duplicate displayContext and displayExceptionContext
The former was unused except for one module where it was essentially
re-defining displayExceptionContext.
Moreover, this commit extends the fix from
bfe600f5bb3ecd2c8fa71c536c63d3c46984e3f8 to displayExceptionContext too,
which was missing.
- - - - -
c0d783f8 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Re-export NoBacktrace from Control.Exception
This was originally proposed and accepted in section
"2.7 Capturing Backtraces on Exceptions"
of the CLC proposal for exception backtraces.
However, the implementation missed this re-export, which this commit now
fixes.
- - - - -
802b5c3e by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Fix exception backtraces from GHCi
When running the program with `runhaskell`/`runghc` the backtrace should
match the backtrace one would get by compiling and running the program.
But currently, an exception thrown in a program interpreted with
`runhaskell` will:
* Not include the original exception backtrace at all
* Include the backtrace from the internal GHCi/ghc rethrowing of the
original exception
This commit fixes this divergence by not annotating the ghc(i) backtrace
(with NoBacktrace) and making sure that the backtrace of the original
exception is serialized across the boundary and rethrown with the
appropriate context.
Fixes #25116
The !13301 MR (not this commit in particular) improves performance of
MultiLayerModules. Unfortunately, T3294 regresses on aarch64-linux-deb12
by 1% allocations. Since this patch must be merged for 9.12 ASAP, we
will not be able to investigate the slight regression on this platform
in time.
-------------------------
Metric Decrease:
MultiLayerModulesRecomp
MultiLayerModulesTH_OneShot
Metric Increase:
T3294
-------------------------
- - - - -
3e89eb65 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
base: Add to changelog.md CLC #285
- - - - -
d9326a48 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Bump array and stm submodules for testsuite
The testsuites of array and stm had to be updated according to !13301.
Updates submodule array and stm.
- - - - -
325fcb5d by Ben Gamari at 2024-11-18T04:06:45-05:00
rts/adjustor: Clean up code style of Nativei386 adjustor
- - - - -
39bb6e58 by Ben Gamari at 2024-11-18T04:06:45-05:00
rts/adjustor: Fix stack overrun error in Nativei386 adjustor
We were reserving the wrong kind of adjustor context (the generic
`AdjustorContext` used by other adjustor implementations, rather than
the i386-specific `CCallContext`) to return the adjustor context while
freeing, resulting in #25485.
Fixes #25485.
- - - - -
831aab22 by sheaf at 2024-11-18T21:22:36-05:00
Include diagnostic reason in -fdiagnostics-as-json
This commit ensures that the -fdiagnostics-as-json output includes the
diagnostic reason. This allows the full error message produced by GHC
to be re-constructed from the JSON output.
Fixes #25403
- - - - -
3e5bfdd3 by Ben Gamari at 2024-11-18T21:23:12-05:00
rts: Introduce printIPE
This is a convenience utility for use in GDB.
- - - - -
44d909a3 by Sjoerd Visscher at 2024-11-19T14:38:24-05:00
Don't store boot locations in finder cache
Partially reverts commit fff55592a7b
Amends add(Home)ModuleToFinder so that locations for boot files are not stored in the finder cache.
Removes InstalledModule field from InstalledFound constructor since it's the same as the key that was searched for.
- - - - -
64c95292 by Sjoerd Visscher at 2024-11-19T14:38:24-05:00
Concentrate boot extension logic in Finder
With new mkHomeModLocation that takes an extra HscSource to add boot extensions if required.
- - - - -
11bad98d by ARATA Mizuki at 2024-11-19T14:39:08-05:00
Better documentation for floating-point min/max and SIMD primitives
See #25350 for floating-point min/max
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
791a47b2 by Arnaud Spiwack at 2024-11-20T14:00:05+00:00
Add test for #25185
- - - - -
374e18e5 by Arnaud Spiwack at 2024-11-20T14:09:30+00:00
Quick look: emit the multiplicity of app heads in tcValArgs
Otherwise it's not scaled properly by the context, allowing unsound
expressions.
Fixes #25185.
- - - - -
1fc02399 by sheaf at 2024-11-20T18:11:03-05:00
x86 NCG: fix regUsageOfInstr for VMOVU & friends
This commit fixes the implementation of 'regUsageOfInstr' for vector
operations that take an 'Operand' as the destination, by ensuring that
when the destination is an address then the address should be *READ*,
and not *WRITTEN*.
Getting this wrong is a disaster, as it means the register allocator
has incorrect information, which can lead to it discard stores to
registers, segfaults ensuing.
Fixes #25486
- - - - -
7bd407a6 by Brandon Chinn at 2024-11-21T14:08:15-05:00
Fix CRLF in multiline strings (#25375)
- - - - -
7575709b by Rodrigo Mesquita at 2024-11-21T14:08:52-05:00
Improve reachability queries on ModuleGraph
Introduces `ReachabilityIndex`, an index constructed from a
`GHC.Data.Graph.Directed` `Graph` that supports fast reachability
queries (in $O(1)$). This abstract data structure is exposed from
`GHC.Data.Graph.Directed.Reachability`.
This index is constructed from the module graph nodes and cached in
`ModuleGraph`, enabling efficient reachability queries on the module
graph. Previously, we'd construct a Map of Set of ModuleGraph nodes
which used a lot of memory (`O(n^2)` in the number of nodes) and cache
that in the `ModuleGraph`. By using the reachability index we get rid of
this space leak in the module graph -- even though the index is still
quadratic in the number of modules, it is much, much more space
efficient due to its representation using an IntMap of IntSet as opposed
to the transitive closure we previously cached.
In a memory profile of MultiLayerModules with 100x100 modules, memory
usage improved from 6GB residency to 2.8GB, out of which roughly 1.8GB
are caused by a second space leak related to ModuleGraph. On the same
program, it brings compile time from 7.5s to 5.5s.
Note how we simplify `checkHomeUnitsClosed` in terms of
`isReachableMany` and by avoiding constructing a second graph with the
full transitive closure -- it suffices to answer the reachability query
on the full graph without collapsing the transitive closure completely
into nodes.
Unfortunately, solving this leak means we have to do a little bit more
work since we can no longer cache the result of turning vertex indices
into nodes. This results in a slight regression in MultiLayerModulesTH_Make,
but results in large performance and memory wins when compiling large
amounts of modules.
-------------------------
Metric Decrease:
mhu-perf
Metric Increase:
MultiLayerModulesTH_Make
-------------------------
- - - - -
bcbcdaaf by Cheng Shao at 2024-11-21T14:09:28-05:00
driver: fix hpc undefined symbol issue in TH with -fprefer-byte-code
This commit fixes an undefined symbol error in RTS linker when
attempting to compile home modules with -fhpc and
-fbyte-code-and-object-code/-fprefer-byte-code, see #25510 for
detailed description and analysis of the bug.
Also adds T25510/T25510c regression tests to test make mode/oneshot
mode of the bug.
- - - - -
970ada5a by Ben Gamari at 2024-11-22T23:32:06-05:00
gitlab-ci: Bump ci-images
For introduction of Alpine/i386 image.
Thanks to Julian for the base image.
Co-Authored-By: Julian Ospald <hasufell(a)hasufell.de>
- - - - -
8115abc2 by Ben Gamari at 2024-11-22T23:32:06-05:00
gitlab-ci: Add release job for i386/Alpine
As requested by Mikolaj and started by Julian.
Co-Authored-By: Julian Ospald <hasufell(a)hasufell.de>
- - - - -
639f0149 by Ben Gamari at 2024-11-22T23:32:06-05:00
rts/linker/Elf: Resolve _GLOBAL_OFFSET_TABLE_
- - - - -
490d4d0a by Ben Gamari at 2024-11-22T23:32:06-05:00
gitlab-ci: Mark i386 Alpine test breakages
Marks the following tests as broken on i386/Alpine:
* T22033 due to #25497
* simd009, T25062_V16, T25169, T22187_run due to #25498
- - - - -
536cdf09 by Cheng Shao at 2024-11-22T23:32:42-05:00
compiler: remove unused GHC.Linker.Loader.loadExpr
This patch removes the unused `GHC.Linker.Loader.loadExpr` function.
It was moved from `GHC.Runtime.Linker.linkExpr` in `ghc-9.0` to
`GHC.Linker.Loader.loadExpr` in `ghc-9.2`, and remain completely
unused and untested ever since. There's also no third party user of
this function to my best knowledge, so let's remove this. Anyone who
wants to write their own GHC API function to load bytecode can consult
the source code in older release branches.
- - - - -
6ee35024 by Drew Fenwick at 2024-11-22T23:33:26-05:00
Fix a non-compiling example in the type abstractions docs
This patch adds a missing Show constraint to a code example in the User Guide's type abstractions docs to fix issue #25422.
- - - - -
d1172e20 by Rodrigo Mesquita at 2024-11-22T23:34:02-05:00
Re-introduce ErrorCallWithLocation with a deprecation pragma
With the removal of the duplicate backtrace, part of CLC proposal #285,
the constructor `ErrorCallWithLocation` was removed from base.
This commit re-introduces it with a deprecation.
- - - - -
1187a60a by Ben Gamari at 2024-11-22T23:34:39-05:00
testsuite: Skip tests requiring Hadrian deps in out-of-tree testsuite runs
Some testsuite tests require specific tools (e.g. `check-ppr` and
`check-exact`) beyond those shipped in the binary distribution. Skip
these tests.
Fixes #13897.
- - - - -
c37d7a2e by Ben Gamari at 2024-11-22T23:34:39-05:00
testsuite: Declare exactprint tests' dependency on check-exact
- - - - -
454ce957 by Ben Gamari at 2024-11-22T23:35:15-05:00
ghc-internal: Fix a few cases of missing Haddock markup
- - - - -
a249649b by Ben Gamari at 2024-11-22T23:35:51-05:00
testsuite/GHCiPrimCall : Add missing Makefile includes
- - - - -
a021a493 by Ben Gamari at 2024-11-22T23:35:51-05:00
testsuite/IpeStats: Use Make rather than shell interpolation
- - - - -
6e1fbda7 by Ben Gamari at 2024-11-25T03:55:44-05:00
hadrian-ghci-multi: Pass -this-package-name in unit response files
As noted in #25509, the `-this-package-name` must be passed for each
package to ensure that GHC can response references to the packages'
exposed modules via package-qualified imports. Fix this.
Closes #25509.
- - - - -
a05e4a9b by Simon Hengel at 2024-11-25T03:56:33-05:00
Refactoring: Use `OnOff` more consistently for `Extension`
- - - - -
7536181d by Matthew Pickering at 2024-11-25T14:00:07-05:00
driver: Always link against "base" package when one shot linking
The default value for base-unit-id is stored in the settings file.
At install time, this can be set by using the BASE_UNIT_ID environment
variable.
At runtime, the value can be set by `-base-unit-id` flag.
For whether all this is a good idea, see #25382
Fixes #25382
- - - - -
7f90f319 by Andreas Klebinger at 2024-11-25T14:00:44-05:00
Compacting GC: Handle black holes in large objects.
As #14497 showed black holes can appear inside large objects when
we capture a computation and later blackhole it like we do for AP_STACK
closures.
Fixes #24791
- - - - -
291388e1 by Cheng Shao at 2024-11-25T14:01:19-05:00
ci: minor nix-in-docker improvements
This patch makes some minor improvements re nix-in-docker logic in the
ci configuration:
- Update `nixos/nix` to the latest version
- Apply $CPUS to `cores`/`max-jobs` to avoid oversubscribing while
allowing a reasonable degree of parallelism
- Remove redundant `--extra-experimental-features nix-command` in
later `nix shell` invocations, it's already configured in
`/etc/nix/nix.conf`
- - - - -
e684c406 by Cheng Shao at 2024-11-25T14:01:57-05:00
ci: avoid depending on stack job for test-bootstrap jobs
This patch makes test-bootstrap related ci jobs only depend on
hadrian-ghc-in-ghci job to finish, consistent with other jobs in the
full-build stage generated by gen_ci.hs. This allows the jobs to be
spawned earlier and improve overall pipeline parallelism.
- - - - -
caaf5388 by Simon Hengel at 2024-11-25T14:02:41-05:00
Refactoring: Remove `pSupportedExts` from `ParserOpts`
This is never used for lexing / parsing. It is only used by
`GHC.Parser.Header.getOptions`.
- - - - -
41f8365c by Arnaud Spiwack at 2024-11-25T14:03:23-05:00
Add test for #25515
- - - - -
9279619f by Arnaud Spiwack at 2024-11-25T14:03:23-05:00
Desugar record notation with correct multiplicities
Simply uses the multiplicity as stored in the field. As I'm writing
this commit, the only possible multiplicity is 1, but !13525 is
changing this. It's actually easier to take !13525 into account.
Fixes #25515.
- - - - -
fcc3ae6e by Andreas Klebinger at 2024-11-26T08:24:58-05:00
Clarify INLINE unfolding optimization docs.
Fixes #24660
- - - - -
88c4fe1d by Cheng Shao at 2024-11-26T08:25:34-05:00
rts: remove -Wl,-U,___darwin_check_fd_set_overflow hack
This patch bumps macOS minimum SDK version to 11.0 for x86_64-darwin
to align it with aarch64-darwin. This allows us to get rid of the
horrible -Wl,-U,___darwin_check_fd_set_overflow hack, which is causing
linker warnings and testsuite failures on macOS 15. Fixes #25504.
- - - - -
53f978c0 by doyougnu at 2024-11-26T16:07:26-05:00
ghc-experimental: expose GHC.RTS.Flags, GHC.Stats
See this CLC proposal:
- https://github.com/haskell/core-libraries-committee/issues/289
and this CLC proposal for background:
- https://github.com/haskell/core-libraries-committee/issues/288
Metric Decrease:
MultiLayerModulesTH_OneShot
- - - - -
e70d4140 by Wang Xin at 2024-11-26T16:08:10-05:00
Add -mcmodel=medium moduleflag to generated LLVM IR on LoongArch platform
With the Medium code model, the jump range of the generated jump
instruction is larger than that of the Small code model. It's a
temporary fix of the problem descriped in https://gitlab.haskell
.org/ghc/ghc/-/issues/25495. This commit requires that the LLVM
used contains the code of commit 9dd1d451d9719aa91b3bdd59c0c6679
83e1baf05, i.e., version 8.0 and later. Actually we should not
rely on LLVM, so the only way to solve this problem is to implement
the LoongArch backend.
Add new type for codemodel
- - - - -
df42ba16 by Andreas Klebinger at 2024-11-27T11:40:49-05:00
Cmm constant folding: Narrow results to operations bitwidth.
When constant folding ensure the result is still within bounds
for the given type by explicitly narrowing the results.
Not doing so results in a lot of spurious assembler warnings
especially when testing primops.
- - - - -
bf3db97e by Ben Gamari at 2024-11-27T11:41:26-05:00
ghc-toolchain: Introduce basic flag validation
We verify that required flags (currently `--output` and `--triple`) are
provided. The implementation is truly awful, but so is getopt.
Begins to address #25500.
- - - - -
a104508d by Ben Gamari at 2024-11-27T11:42:03-05:00
rts: Allow ExecPage to allocate anywhere in address space
Currently the ExecPage facility has two users:
* GHCi, for constructing info tables, and
* the adjustor allocation path
Despite neither of these have any spatial locality constraints ExecPage
was using the linker's `mmapAnonForLinker`, which tries hard to ensure
that mappings end up nearby the executable image. This makes adjustor
allocation needlessly subject to fragmentation concerns.
We now instead return less constrained mappings, improving the
robustness of the mechanism.
Addresses #25503.
- - - - -
c3fc9b86 by Ben Gamari at 2024-11-27T11:42:39-05:00
base: Fix incorrect mentions of GHC.Internal.Numeric
These were incorrectly changed by the automated refactoring of the
`ghc-internal` migration.
Fixes #25521.
- - - - -
a362b943 by sheaf at 2024-11-27T23:44:28-05:00
Add checkExact to toolTargets
This change means that the Hadrian multi target will include exactprint.
In particular, this means that HLS will work on exactprint inside the GHC tree.
- - - - -
e6c957e4 by Arnaud Spiwack at 2024-11-27T23:45:09-05:00
Add test for #25428
- - - - -
52d97f4e by Arnaud Spiwack at 2024-11-27T23:45:09-05:00
Don't bypass MonoLocalBind in empty patterns
Fixes #25428
- - - - -
7890f2d8 by Ben Gamari at 2024-11-28T10:26:46-05:00
hadrian: Bump directory bound to >=1.3.9
Earlier versions of `directory` are racy on Windows due to #24382.
Also includes necessary Hadrian bootstrap plan bump.
Fixes #24382.
- - - - -
0fd43ea6 by Adam Sandberg Ericsson at 2024-11-28T10:27:22-05:00
mention -Iw in +RTS -?
- - - - -
6cf579b9 by Ben Gamari at 2024-11-28T10:27:59-05:00
gitlab-ci: Set GIT_SUBMODULE_FORCE_HTTPS
GitLab recommends using `https://` to clone submodules and provides the
`GIT_SUBMODULE_FORCE_HTTPS` variable to force this.
Fixes #25528.
- - - - -
5b4774f9 by sheaf at 2024-12-03T15:22:07+01:00
Remove TcRnDeprecatedInvisTyArgInConPat mechanism
The combination of ScopedTypeVariables + TypeApplications now no longer
enables the use of type applications in constructor patterns, as per
GHC proposal #448.
This completes the deprecation that begun with GHC 9.8.
We also remove the -Wdeprecated-type-abstractions flag, which was
introduced in GHC 9.10.
- - - - -
f813c8d7 by sheaf at 2024-12-03T17:10:15-05:00
Hadrian: use / when making filepaths absolute
In Hadrian, we are careful to use -/- rather than </>, in order to use
/ instead of \ in filepaths. However, this gets ruined by the use of
makeAbsolute from System.Directory, which, on Windows, changes back
forward slashes to backslashes.
- - - - -
292ed74e by Ben Gamari at 2024-12-03T17:10:52-05:00
rts/linker: Fix out-of-bounds mapping logic
Previously the structure of `mmapInRegion` concealed a subtle bug
concerning handling of `mmap` returning mappings below the beginning of
the desired region. Specifically, we would reset `p = result + bytes`
and then again reset `p = region->start` before looping around for
another iteration. This resulted in an infinite loop on FreeBSD.
Fixes #25492.
- - - - -
20912f5b by Ben Gamari at 2024-12-03T17:10:52-05:00
rts/linker: Clarify debug output
- - - - -
f98b3ac0 by Simon Hengel at 2024-12-03T17:11:30-05:00
SysTools: Avoid race conditions when processing output (fixes #16450)
- - - - -
03851b64 by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
mg: Drop unnecessary HasCallStack
This HasCallStack was a debugging artifact from a previous commit.
- - - - -
01d213b5 by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
Improve haddock of graphReachabilityCyclic
- - - - -
f7cbffe2 by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
Refactor ModuleGraph interface
The 'ModuleGraph' abstraction represents the relationship and strucutre
of the modules being compiled. This structure is meant to be constructed
once at the start of compilation, and never changed again.
However, it's exposed interface was confusing and exposed too many
footguns which led to inneficient usages of the ModuleGraph. This commit
improves significantly the exported interface of ModuleGraph, taking
into consideration the recent improvements around reachability queries.
Since the ModuleGraph graphs and related structures (HPT, EPS) are
performance critical in the sense that somewhat simple mistakes can
cause bad leaks and non-linear memory usage, we want to have proper APIs
that guide efficient usage. This is a good step in that direction.
- - - - -
b69a7f3c by David Binder at 2024-12-04T18:37:42-05:00
Use consistent capitalization for "GHC Proposal" in user guide
- - - - -
18d9500d by David Binder at 2024-12-04T18:37:42-05:00
Fix reference to GHC proposal 193 in user guide
- - - - -
dd959406 by Ben Gamari at 2024-12-04T18:38:18-05:00
Revert "rts/Interpreter: Assert that TEST*_P discriminators are valid"
This assertion was based on the misconception that `GET_TAG` was
returning the pointer tag whereas it is actually returning the
constructor tag.
This reverts commit 9bf3663b9970851e7b5701d68147450272823197.
Fixes #25527.
- - - - -
cad6fede by Ben Gamari at 2024-12-04T18:38:54-05:00
rts/IOManager: Drop dead code
This assignment is dead code as it occurs after all branches have
returned. Moreover, it can't possibly be relevant since the "available"
branch already sets `flag`.
Potentially fixes #25542.
- - - - -
55d8304e by Ben Gamari at 2024-12-06T16:56:00-05:00
ghc-internal: Drop GHC.Internal.Data.Enum
This module consists only of reexports and consequently there is no
reason for it to exist.
- - - - -
56b9f484 by Ben Gamari at 2024-12-06T16:56:00-05:00
base: Introduce Data.Bounded
As proposed in [CLC#208] but unfortunately `Data.Enum` was already
incorrectly introduced in the `ghc-internal` refactor.
[CLC#208]: https://github.com/haskell/core-libraries-committee/issues/208
- - - - -
336d392e by Ben Gamari at 2024-12-06T16:56:00-05:00
base: Deprecate export of Bounded from Data.Enum
This begins the process of bringing us into compliance with
[CLC#208].
[CLC#208]: https://github.com/haskell/core-libraries-committee/issues/208
- - - - -
dd7ca939 by Ben Gamari at 2024-12-06T16:56:00-05:00
base: Mention incorrect Data.Enum addition in changelog
- - - - -
dfd1db48 by Ben Gamari at 2024-12-06T16:56:36-05:00
base: Reintroduce {Show,Enum} IoSubSystem
These instances were dropped in !9676 but not approved by the CLC.
Addresses #25549.
- - - - -
090fc7c1 by Peter Trommler at 2024-12-07T03:41:21-05:00
Fix requirements on T25240
T25240 doesn't need RTS linker, GHCi is sufficient and GHCi can also be
dynamically linked.
- - - - -
3fb5d399 by Peter Trommler at 2024-12-07T03:41:21-05:00
Fix requirements for T25155
Loading C objects requires RTS linker.
- - - - -
4c58bdf6 by Leary at 2024-12-07T03:42:07-05:00
TH: Add typed variants of dataToExpQ and liftData
This commit introduces to template-haskell (via ghc-internal) two
functions `dataToCodeQ` and `liftDataTyped`, typed variants of
`dataToExpQ` and `liftData` respectively.
Tested in: `dataToCodeQUnit`.
- - - - -
63027593 by Serge S. Gulin at 2024-12-08T13:52:05+03:00
JS: Basic cleanup for unused stuff to simplify things.
1. Make `staticInitStat`, `staticDeclStat`, `allocUnboxedConStatic`, `allocateStaticList`, `jsStaticArg` local to modules.
2. Remove unused `hdRawStr`, `hdStrStr` from Haskell and JavaScript (`h$pstr`, `h$rstr`, `h$str`).
3. Introduce a special type `StaticAppKind` enumeration and `StaticApp` to represent boxed scalar static applications. Originally, StaticThunk supported to pass Maybe when it became Nothing for initializied thunks in an alternatie way but it is not used anymore.
- - - - -
a9f8f1fb by Serge S. Gulin at 2024-12-08T14:10:45+03:00
JS: Add trivial optimizations for `unpackCString` and `unpackCStringUtf8`.
It became possible due of introduction strings unfloating at Sinker pass (#13185). Earns few more bytes at optimizations.
- - - - -
b519c06b by Serge S. Gulin at 2024-12-08T15:50:26+03:00
JS: Specialize unpackCString# CAFs (fixes #24744)
Code analysis shown that such optimization would be possible out of the box if `cachedIdentForId` allowed to do that for Haskell `Id`s which are represented by few JavaScript `Ident`s. It is a usual for strings which are represented at JavaScript as a pair of 2 values: the string content and the offset where to start reading actual string from the full content. Usually offset is 0 but technically we need to allow such complex structures to be treated as "global".
Enabling it there shown that `genToplevelRhs` and `globalOccs` had inaccuracies in their implementations:
1. `globalOccs` operated over JavaScript's `Ident`s but for complex structures it didn't pay attention to the fact that different Idents actually could be pointed to same Id. Now the algo is changed to calculate occurencies for Ids.
2. `genToplevelRhs` didn't assume that different Idents pointed to same Id can have mixed order of occurence. But actually the order is important. Strings are encoded into 2 variables where first is content and second is offset and their order are not interchangeable. It is fixed by regeneration Idents from collected Ids which is fine because all Idents generation is passed through the Cache and they are quasi-stable.
- - - - -
a8ceccf3 by Brandon Chinn at 2024-12-09T16:25:43-05:00
Fix panic in multiline string with unterminated gap (#25530)
- - - - -
9e464ad0 by Brandon Chinn at 2024-12-09T16:25:43-05:00
Add test case for unterminated multiline string
- - - - -
ed1ed5c6 by Rodrigo Mesquita at 2024-12-09T16:26:19-05:00
Revert mapMG renaming
We had previously renamed this function for consistency, but that caused unnecessary breakage
- - - - -
158261f7 by Sylvain Henry at 2024-12-09T16:27:01-05:00
RTS: make Cabal flags manual
Cabal shouldn't automatically try to set them. We set them explicitly.
- - - - -
a83b7ed6 by Matthew Stephenson at 2024-12-10T14:01:22-05:00
Add missing @since documentation for (!?) function
- - - - -
e745e3a3 by Ben Gamari at 2024-12-10T14:01:59-05:00
compiler: Don't attempt to TSAN-instrument SIMD operations
TSAN only provides instrumentation for 8, 16, 32, and 64-bit memory
loads/stores. Don't attempt to instrument wider operations.
Fixes #25563.
- - - - -
684c0018 by Ben Gamari at 2024-12-10T14:02:35-05:00
gitlab/ci: Don't clobber RUNTEST_ARGS
Previously the logic handling `IGNORE_PERF_FAILURES` clobbered the
user's `RUNTEST_ARGS`. Fix this.
- - - - -
41dae5b8 by Ben Gamari at 2024-12-10T14:03:11-05:00
hadrian: Mitigate mktexfmt race
At least some versions of Texlive's `mktexfmt` utility cannot be invoked
concurrently in their initial run since they fail to handle failure of
`mkdir` due to racing. Specifically, we see
```
| Run Xelatex: users_guide.tex => /tmp/extra-dir-9616886274866
| Run Xelatex: Haddock.tex => /tmp/extra-dir-9616886274869
This is XeTeX, Version 3.14159265-2.6-0.999992 (TeX Live 2020) (preloaded format=xelatex)
restricted \write18 enabled.
kpathsea: Running mktexfmt xelatex.fmt
mktexfmt: mktexfmt is using the following fmtutil.cnf files (in precedence order):
mktexfmt: /usr/share/texlive/texmf-dist/web2c/fmtutil.cnf
mktexfmt: mktexfmt is using the following fmtutil.cnf file for writing changes:
mktexfmt: /builds/ghc/ghc/tmp-home/.texlive2020/texmf-config/web2c/fmtutil.cnf
/usr/bin/mktexfmt: mkdir(/builds/ghc/ghc/tmp-home/.texlive2020/texmf-var/web2c/) failed for tree /builds/ghc/ghc/tmp-home/.texlive2020/texmf-var/web2c: File exists at /usr/share/texlive/tlpkg/TeXLive/TLUtils.pm line 937.
I can't find the format file `xelatex.fmt'!
```
That is two `mktexfmt` invocations (for the user's guide and haddock
builds) attempted to create `$HOME/texlive2020/texmf-var/web2c` and
raced. One of the two `mkdir`'s consequently failed, bringing down the
entire build.
We avoid this by ensuring that the first `xelatex` invocation is always
performed serially.
Fixes #25564.
- - - - -
9efbc51f by Ben Gamari at 2024-12-10T14:03:48-05:00
rts/CheckUnload: Reset old_objects if unload is skipped
Previously `checkUnload` failed to reset `old_objects` when it decided
not to unload (e.g. due to heap profiling being enabled).
Fixes #24935.
- - - - -
5192a75f by Ben Gamari at 2024-12-11T04:28:11-05:00
rts: Annotate BCOs with their Name
This introduces a new bytecode instruction, `BCO_NAME`, to aid in debugging
bytecode execution. This instruction is injected by `mkProtoBCO` and
captures the Haskell name of the BCO. It is then printed by the
disassembler, allowing ready correlation with STG dumps.
- - - - -
99225996 by Ben Gamari at 2024-12-11T04:28:48-05:00
configure: Implement ld override whitelist
Bring `configure` into alignment with `ghc-toolchain`, ensuring that the
ld-override logic will only take effect on Linux and Windows.
Fixes #25501.
- - - - -
4a8fc928 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Unmark T14028 as broken on FreeBSD
This now appears to pass on FreeBSD 14.
Closes #19723.
- - - - -
d7c0eb5a by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Migrate FreeBSD runner tag to FreeBSD 14
- - - - -
7246dacc by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Reintroduce FreeBSD 14 job
- - - - -
4af936da by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Allow use of newer cabal-install bindists
Newer cabal-install bindists have internal directory structure.
Here we detect and account for the presence of such structure.
- - - - -
cbf38c1b by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Enable documentation build on FreeBSD 14
- - - - -
d68107fb by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Use system libffi on FreeBSD
- - - - -
fea3b590 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark linker_unload as broken on FreeeBSD
Due to #25491.
- - - - -
ccf171ee by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Prefer system toolchain on FreeBSD
It's not uncommon to find machines with gcc installed via ports. We
should be using the system's default clang-based toolchain instead.
- - - - -
cfb34738 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark T21969 as broken on FreeBSD
Due to #25512.
- - - - -
0b64e37c by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark RestartEventLogging as broken on FreeBSD
I am seeing this fail quite reproducibly.
Due to #19724.
- - - - -
3b412019 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark T16180 as "broken" on FreeBSD
Sadly we in fact need to skip it as it merely times out during
compilation.
See #14012.
- - - - -
57e3cab5 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Skip T16992 unless in slow speed
This test has extraordinary memory requirements and tests a rather
niche aspect of the compact region mechanism. It has been suggested
multiple times that we shouldn't run it in the default testsuite
configuration. Finally implement this.
See #21890.
See #21892.
- - - - -
f08a72eb by Ben Gamari at 2024-12-11T19:30:54-05:00
rts(setNumCapabilities): Assert that n_caps < MAX_N_CAPS
It was noticed in #25560 that this would previously be allowed,
resulting in a segfault.
I will add a proper exception in `base` in a future commit.
- - - - -
e10d31ad by Ben Gamari at 2024-12-11T19:30:55-05:00
ghc-internal: Fix inconsistent FFI import types
The foreign imports of `enabled_capabilities` and
`getNumberOfProcessors` were declared as `CInt` whereas they are defined
as `uint32_t`.
- - - - -
06265655 by Ben Gamari at 2024-12-11T19:30:55-05:00
rts: Mention maximum capability count in users guide
Addresses #25560.
- - - - -
d488470b by Ben Gamari at 2024-12-11T19:30:55-05:00
rts/Capability: Move induction variable declaration into `for`s
Just a stylistic change.
- - - - -
71f050b7 by Ben Gamari at 2024-12-11T19:30:55-05:00
rts: Determine max_n_capabilities at RTS startup
Previously the maximum number of capabilities supported by the RTS was
statically capped at 256. However, this bound is uncomfortably low given
the size of today's machine.
While supporting unbounded, fully-dynamic adjustment would be nice, it
is complex and so instead we do something simpler: Probe the logical
core count at RTS startup and use this as the static bound for the rest
of our execution.
This should avoid users running into the capability limit on large
machines while avoiding wasting memory on a large capabilities array for
most users and keeping complexity at bay.
Addresses #25560.
- - - - -
1e84b411 by Ben Gamari at 2024-12-11T19:30:55-05:00
testsuite: Introduce req_c_rts
As suggested by @hsyl20, this is intended to mark tests that rely on the
behavior of the C RTS.
- - - - -
683115a4 by Ben Gamari at 2024-12-11T19:30:55-05:00
testsuite: Add test for #25560
- - - - -
ef2052a8 by Ben Gamari at 2024-12-12T04:42:32-05:00
testsuite: Only run T14497_compact in normal way
This test targets the compacting GC so it makes little sense to run it
across all ways. Moreover, it outright conflicts with the `nonmoving`
way.
- - - - -
34d3e8e6 by Ben Gamari at 2024-12-12T04:43:08-05:00
rts/CheckUnload: Don't prepare to unload if we can't unload
Previously `prepareUnloadCheck` would move the `objects` list to
`old_objects` even when profiling (where we cannot unload). This caused
us to vacate the `objects` list during major GCs, losing track of loaded
objects. Fix this by ensuring that `prepareUnloadCheck` and
`checkUnload` both use the same short-cutting logic.
- - - - -
9c53489d by Andrei Borzenkov at 2024-12-12T15:06:42-05:00
Update GHCi :info type declaration printing (#24459)
- Do not print result's kind in type families
because we have full kind in SAKS and we display
invisible arity using @-binders
- Do not suppress significant invisible binders
An invisible binder is considered significant when it meets at least
one of the following two criteria:
- It visibly occurs in the declaration's body
- It is followed by a significant binder,
so it affects positioning
For non-generative type declarations (type synonyms and type families)
there is one additional criterion:
- It is not followed by a visible binder, so it
affects the arity of a type synonym
See Note [Print invisible binders in interface declarations]
for more information about what is "visibly occurs"
- - - - -
13fe48d4 by Matthew Pickering at 2024-12-12T15:07:19-05:00
typechecker: Perform type family consistency checks in topological order
Consider a module M importing modules A, B and C.
We can waste a lot of work depending on the order that the modules are
checked for family consistency.
Consider that C imports A and B. When compiling C we must have already
checked A and B for consistency, therefore if C is processed first then
A and B will not need to be checked for consistency again.
If A and B are compared first, then the consistency checks will be
performed against (wasted as we already performed them for C).
At the moment the order which modules are checked is non-deterministic.
Clearly we should engineer that C is checked before B and A, but by what
scheme?
A simple one is to observe that if a module M is in the transitive
closure of X then the size of the consistent family set of M is less
than or equal to size of the consistent family set of X.
Therefore by sorting the imports by the size of the consistent family
set and processing the largest first, you make sure to process modules
in topological order.
In practice we have observed that this strategy has reduced the amount
of consistency checks performed.
One solution to #25554
- - - - -
62a2b25f by Sylvain Henry at 2024-12-14T04:31:09-05:00
TNTC: set CmmProc entry_label properly (#25565)
Before this patch we were renaming the entry label of a CmmProc late in
the CmmToAsm pass. It led to inconsistencies and to some labels being
used in info tables but not being emitted (#25565).
Now we set the CmmProc entry label earlier in the StgToCmm monad and we
don't renamed it afterwards.
- - - - -
b339e7c3 by Simon Hengel at 2024-12-14T04:31:47-05:00
Make filter functionality for system tools line-based
This is more efficient as:
- All existing filter functions were line-based anyway. They broke up
the input into lines and then joined it back together.
- We already break up the output from system tools into lines when
processing it.
Splitting up the output of system tools once and then filtering and
processing it reduces both code and runtime complexity.
- - - - -
39669077 by Simon Hengel at 2024-12-14T04:31:47-05:00
Refactoring: Don't use a `Chan` when parsing SysTools output
- - - - -
64756530 by Simon Peyton Jones at 2024-12-14T22:28:04-05:00
Tidy up the handling of `assert`
Fixes #25493
- - - - -
8658fbc1 by Rodrigo Mesquita at 2024-12-14T22:28:41-05:00
base: displayException for SomeAsyncException
Provide a better implementation of `SomeException` for
`SomeAsyncException`.
The previous, implicit, implementation, would not use the
`displayException` of the exception wrapped by `SomeAsyncException`.
Implements CLC-Proposal#309
Closes #25513
- - - - -
2d3a0a70 by ARATA Mizuki at 2024-12-15T18:35:30-05:00
LLVM: When emitting a vector literal with ppTypeLit, include the type information
Fixes #25561
- - - - -
bfacc086 by Simon Peyton Jones at 2024-12-15T18:36:05-05:00
Fix signature lookup in instance declarations
This fixes a bug introduced by the fix to #16610
- - - - -
80f0e02d by Simon Peyton Jones at 2024-12-16T17:13:52+00:00
Improve GHC build times
Two small changes
* In GHC.Data.Unboxed, never omit interface pragmas. In "fast builds"
one might omit them generally, but doing so gives very bad
performance for code that imports this module.
* In GHC.Hs.Dump don't do type-class specialisation. For some reason
it goes mad and generates vast amounts of useless code. See #25463.
- - - - -
175a1355 by Simon Peyton Jones at 2024-12-16T17:13:52+00:00
Refactor Lint
Refactor Lint for two reasons:
* To improve performance
* To prepare for type-lets
The big changes are all in GHC.Core.Lint:
* Change the main APIs:
* `lintType` returns nothing rather than returning a `LintedType`;
* `lintCoercion` return nothing rather than returning a `LintedCoercion`
Reason: these functions did a lot of allocation to return a substituted
type/coercion that was often discarded, or used only to extract its kind.
Instead we now return nothing, and, when needed, extract the kind and
substitute.
* Applications are treated as a whole, by `lintApp`. By treating
multiple arguments all at once we avoid performing multiple
substitutions, each substituting a single type variable. This can
make an absolutely huge difference.
Overall this led to a pretty massive rewrite of Lint, with many smaller
changes.
Smaller chnages elsewhere
* Rename `GHC.Core.TyCo.Subst.getSubstInScope` to `substInScopeSet` for consistency
* Define and use `GHC.Core.Type.liftedTypeOrConstraintKind`
Performance. This MR someimtes gives gives a very large improvement in
compile time, when Lint is on. here is a selection of changes over 5%
in perf/compiler (with -dcore-lint)
T25196 -97.0%
T14766 -89.7%
T14683 -74.4%
T5631 -60.9%
T20261 -56.7%
T18923 -17.6%
T13035 -15.8%
T6048 -15.8%
CoOpt_Read -14.4%
T9630 -10.9%
T5642 -7.3%
Eliminating the egregious offenders is a big win.
However, in some cases the compiler allocation /increases/. Here ae the
changes over 1%:
T9961 1.5%
T8095 2.8%
T14052 3.9%
T12545 4.5%
T14052Type 5.5%
T5030 8.0%
T5321Fun 8.3%
T3064 12.7%
CoOpt_Singletons 15.6%
T9198 16.0%
LargeRecord 18.1%
I looked at the two biggest increases in compile-time bytes allocated. Interestingly,
they both show substantial *decreases* in actual compile time, due to much smaller GC times.
I'm honestly not sure either why the allocation increases, or why the GC time decreases;
but I'm going to take the win!
T9198
Baseline With patch
No Lint
Alloc 44.6M 44.6M
Mut time 0.23s 0.22s
GC time 0.21s 0.21s
With Lint
Alloc 309M 360M
Mut time 1.51s 0.85s
GC time 2.97s 0.25s
-------------------
LargeRecord
Baseline With patch
No Lint
Alloc 1.37G 1.37G
Mut time 2.33s 2.33s
GC time 2.40s 2.42s
With Lint
Alloc 3.4G 4.0G
Mut time 6.02s 5.68s
GC time 3.67s 3.03s
IMPORTANT NOTE: These changes don't show up in CI because in CI the
tests in perf/compiler are all run with -dcore-lint switched off. I
gathered this data with some manual runs.
- - - - -
8ef2dad6 by Simon Peyton Jones at 2024-12-17T02:48:09-05:00
Add Note [Typechecking overloaded literals]
See #25494.
- - - - -
e86b1b20 by Ben Gamari at 2024-12-17T13:51:39-05:00
testsuite: Use math.inf instead of division-by-zero
This both more directly captures the intent and also fixes #25580.
- - - - -
430d965a by Ben Gamari at 2024-12-17T13:52:15-05:00
rts: Fix incorrect format specifiers in era profiling
Fixes #25581.
- - - - -
267098ad by Andreas Klebinger at 2024-12-18T23:43:13-05:00
Document `-prof` and non `-prof` code being incompatible.
Fixes #25518.
- - - - -
04433916 by Zubin Duggal at 2024-12-18T23:43:50-05:00
ghcup metadata: output metadata fragment in CI
(cherry picked from commit 52b58a660e735b20961d792d8fa9267f01247a50)
- - - - -
7c78804e by Zubin Duggal at 2024-12-18T23:43:50-05:00
ghcup metatdata: use fedora33 for redhat
Redhat 9 doesn't have libtinfo.so.5 anymore
(cherry picked from commit dc86785eb43afd1bd292287c064fb5ad94fe8c7f)
- - - - -
1d72cfb2 by Zubin Duggal at 2024-12-18T23:43:50-05:00
ghcup metadata: still use centos for redhat <9
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3f7ebc58 by Sylvain Henry at 2024-12-19T20:40:14-05:00
Merge ghc-bignum into ghc-internal (#24453)
First step towards merging ghc-bignum and ghc-prim into ghc-internal.
After this patch, ghc-bignum is deprecated and is just a shallow package
reexporting modules from ghc-internal and base. Use those directly
instead.
Move `gmp` submodule into ghc-internal directory.
- - - - -
ee0150c2 by Rodrigo Mesquita at 2024-12-19T20:40:51-05:00
Improve performance of deriving Show
Significantly improves performance of deriving Show instances by
avoiding using the very polymorphic `.` operator in favour of inlining
its definition. We were generating tons of applications of it, each
which had 3 type arguments!
Improves on #9557
-------------------------
Metric Decrease:
InstanceMatching
T12707
T3294
------------------------
- - - - -
8b266671 by Rodrigo Mesquita at 2024-12-19T20:40:51-05:00
Don't eta expand cons when deriving Data
This eta expansion was introduced with the initial commit for Linear
types.
I believe this isn't needed any longer. My guess is it is an artifact
from the initial linear types implementation: data constructors are
linear, but they shouldn't need to be eta expanded to be used as higher
order functions. I suppose in the early days this wasn't true.
For instance, this works now:
data T x = T x
f = \(x :: forall y. y -> T y) -> x True
f T -- ok!
T is linear, but can be passed where an unrestricted higher order
function is expected. I recall there being some magic around to make
this work for data constructors...
Since this works, there's no need to eta_expand the data constructors in
the derived Data instances.
- - - - -
1f67ad21 by Andrei Borzenkov at 2024-12-25T01:42:31-05:00
Flip the order of arguments of setField (#24668)
GHC Proposal 583 "HasField redesign" specifies the
following order of a setField function arguments as this:
setField :: forall fld a b. SetField fld a b. b -> a -> a
This patch flips the application order to match the spec.
- - - - -
3e0c948d by Ben Gamari at 2024-12-25T01:43:08-05:00
rel-eng/upload: Add set_symlink mode
This slightly eases updating of the `latest` symlinks.
- - - - -
63d63f9d by Simon Peyton Jones at 2024-12-25T01:43:45-05:00
Preserve orientation when unifying kinds
This MR fixes yet another manifestation of the trickiness caused
by Note [Fundeps with instances, and equality orientation].
I wish there was a more robust way to do this, but this fix is
a definite improvement.
Fixes #25597
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94ba9a6a by ARATA Mizuki at 2024-12-26T10:47:57-05:00
x86 NCG SIMD: Support pack/insert/broadcast/unpack of 128-bit integer vectors
- - - - -
6bf0d587 by Andrew Lelechenko at 2024-12-26T10:48:33-05:00
docs: fix haddock formatting in Control.Monad.Fix
- - - - -
feb14af1 by Sergey Vinokurov at 2024-12-27T15:06:28+00:00
Remove unnecessary irrefutable patterns from NonEmpty functions
Implementation of https://github.com/haskell/core-libraries-committee/issues/107
- - - - -
6a0d91b4 by Sergey Vinokurov at 2024-12-27T15:06:28+00:00
Make cons, Semigroup, IsList, and Monad instances stricter
- - - - -
1249e597 by Sergey Vinokurov at 2024-12-27T15:06:28+00:00
Restore some laziness in <| and Semigroup instance, improve Monad instance
The Monad instance shouldn't produce the outer :| unless f a reduces
to WHNF. (Notice that the b :| bs match is implicitly lazy.)
- - - - -
8699d826 by Sergey Vinokurov at 2024-12-27T15:12:30+00:00
Add comment outlining Data.List.NonEmpty implementation guiding principles
- - - - -
7febe00e by Sergey Vinokurov at 2024-12-27T22:24:43+00:00
Fix tests since location of ‘>>=’ changed
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a928c326 by ARATA Mizuki at 2024-12-28T03:06:14-05:00
Fix LLVM version detection
With a recent LLVM, `llc -version` emits the version on the first line
if the vendor is set. It emits the version on the second line
otherwise.
Therefore, we need to check the both lines to detect the version.
GHC now emits a warning if it fails to detect the LLVM version,
so we can notice if the output of `llc -version` changes in the future.
Also, the warning for using LLVM < 10 on s390x is removed, because
we assume LLVM >= 13 now.
This fixes the definition of __GLASGOW_HASKELL_LLVM__ macro.
Fixes #25606
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7f79257a by Zubin Duggal at 2024-12-29T13:04:35+00:00
Bump base, ghc-prim and template-haskell versions for 9.12
Also bump various submodules.
(cherry picked from commit 6fc1fa3bdc8f53acdb19e47145789274060e498f)
Bump base bound to 4.21 for GHC 9.12
(cherry picked from commit 473a201c6b55aea5bf9c9db0836a66ea1b657e04)
Bump binary submodule to 0.8.9.2
(cherry picked from commit 7199869a52ab45e8856658248bf807954d58cc20)
(cherry picked from commit ec2f40b45c1a3d82d17a2fc07e9ddb9218bc3940)
Bump exceptions submodule to 0.10.9
(cherry picked from commit f5b5d1dc2d326368e5b173d622630d77f019b629)
Bump file-io submodule to 0.1.4
(cherry picked from commit ba786681de6ac5fa49938e2cd71a5988f0f40d1f)
bump os-string submodule to 2.0.6
(cherry picked from commit 3a7ffdbb832c045a55fd1ef24f546abdd9d9e30f)
bump transformers submodule to 0.6.1.2
(cherry picked from commit 53b46fd437421b9e5a001edc6d1c427439d7714f)
Bump directory submodule to v1.3.9.0
(cherry picked from commit 27dc2664c5404bb462092bb216c2c37b418fd1f8)
Bump Win32 submodule to v2.14.1.0
(cherry picked from commit 80df88086180f5e39212b2feacf70a9d2b263c6c)
Bump filepath submodule to 1.5.3.0
(cherry picked from commit 29bfae2c58a7303a081a6e7956b9f55e5faf3eeb)
Bump file-io submodule to avoid usage of QuasiQuotes
(cherry picked from commit 97b0dff223a6c4cc003adec448104c277f214645)
Bump unix submodule to 2.8.6.0
(cherry picked from commit a1f56d6d6a99c100f88ef0a8b4d51298cf24a42d)
Bump os-string submodule to 2.0.8
(cherry picked from commit 0121b76fd52ea0c0ce5d07085bc195666b63c625)
Bump file-io submodule to avoid usage of QuasiQuotes
(cherry picked from commit 962ceb50c8a6fc370e1c0a267f5cd5562a8cf759)
Bump filepath submodule to 1.5.4.0
(cherry picked from commit 7bc6877fd5d41c6d5900678ad5e73ed30f366569)
Bump file-io submodule to 0.1.5
(cherry picked from commit 9478b5aefe2877d58baf527edcf936dddbb955b7)
Bump Cabal submodule to 3.14.1.0
(cherry picked from commit 5c9c3e3f79a79bb6d9a77a17c716dc3a0bcbd2aa)
Bump directory submodule to 0.12.2.0
(cherry picked from commit 897906265db37af34ae2aaa016cec417f263407b)
Bump array submodule for base bump
Bump stm submodule for base bump
Bump process submodule for base bump
- - - - -
f6079408 by Zubin Duggal at 2024-12-29T13:04:35+00:00
Fix ghc-e005 after HasCallstack changes
(cherry picked from commit 77f340a24561cea8a6f2ada296b3ea356ab1823c)
- - - - -
3e10fa75 by Zubin Duggal at 2024-12-29T13:04:35+00:00
Add haskeline to stage0Packages
Otherwise we link against boot inplace and boot unix as boot haskeline
depends on boot unix.
(cherry picked from commit 90b493769ebdf3cd7be404d18462dc20ac1044df)
- - - - -
4ad6aec4 by Zubin Duggal at 2024-12-29T13:04:35+00:00
Fix TH changelog
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ea3f7fd5 by Zubin Duggal at 2024-12-29T13:04:35+00:00
release: copy index.html from correct directory
(cherry picked from commit cbfd0829cd61928976c9eb17ba4af18272466063)
- - - - -
fafb70db by Zubin Duggal at 2024-12-29T13:04:35+00:00
hadrian-multi: warn on unused imports
os-string has redundant imports
(cherry picked from commit dde3796be689ea57543936e22aa5ea4ef7ed995e)
- - - - -
c02b1e46 by Simon Peyton Jones at 2024-12-29T17:04:30-05:00
Fix in-scope set for CSE
Ticket #25468 showed an assertion failure in CSE because a top-level
Id was being used before it was defined. Reason: Note [Glomming] in
GHC.Core.Opt.OccurAnal.
Solution (used in many places): just put all the top-level bindings in
scope at the beginning of CSE.
Compile-time allocation wobbles up and down a tiny bit; geo mean is
zero. But MultiLayerModulesTH_OneShot and hard_hole_fits increase (on
some architectures only) by a bit oever 2% . I think these are just a
random fluctuations.
Metric Increase:
MultiLayerModulesTH_OneShot
hard_hole_fits
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559d4f84 by Krzysztof Gogolewski at 2024-12-30T11:53:19-05:00
Add tests for #23883
The issue has been fixed by commit f5d3e03c56ffc63.
Only T23883a is the actual regression test, the remaining ones are
tricky cases found during development of an independent fix !11313.
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278a53ee by Sergey Vinokurov at 2024-12-30T11:53:59-05:00
Update changelog for CLC proposal #107 (NonEmpty laziness)
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f56558be by Matthew Pickering at 2025-01-07T13:53:03-05:00
warnings: Find out if a qualified name is in the interactive scope directly
There were two ad-hoc mechanisms used to determine which modules were in
the interactive scope.
1. Look at everything in the GRE, to see what is imported qualified.
2. Look at the last loaded module in the HPT.
(1) Is very inefficient, GlobalRdrEnvs can be very big.
(2) is incorrect, there is no reason to assume the "last" thing added to
the HPT has any relevance to module loading order.
Happily, the same checks can be implemented directly by looking at the
interactive imports from the interactive context. This mirrors what
happens for normal imports.
Arguably, the error reporting code shouldn't be doing this kind of
processing and it should be an option is set when rendering the error
message. However, this just improves the situation and doesn't block
progress on that front in future.
See #14225 and #15611
Fixes #25600
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84155cdb by Simon Peyton Jones at 2025-01-07T13:53:40-05:00
Tidy up kcConDecls
Addresses #25630
In particular,
* Introduce ConArgKind and use it.
* Make kcConDecls and tcConDecls work the same way
concerning the kind of argument types
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6c12b6cf by Bryan Richter at 2025-01-07T18:15:02-05:00
Remove tmp files after toolchain check
Fixes #25620
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42826a89 by Cheng Shao at 2025-01-07T18:15:39-05:00
xxhash: bump to v0.8.3
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185f17e4 by sheaf at 2025-01-07T18:16:15-05:00
Fix typo in GHC.Tc.Solver.Solve.runTcPluginsWanted
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23099752 by Luite Stegeman at 2025-01-08T00:33:33+01:00
Add flags for switching off speculative evaluation.
We found that speculative evaluation can increase the amount of
allocations in some circumstances. This patch adds new flags for
selectively disabling speculative evaluation, allowing us to
test the effect of the optimization.
The new flags are:
-fspec-eval
globally enable speculative evaluation
-fspec-eval-dictfun
enable speculative evaluation for dictionary functions (no effect
if speculative evaluation is globally disabled)
The new flags are on by default for all optimisation levels.
See #25284
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0161badc by Ben Gamari at 2025-01-09T17:30:05-05:00
rts/printClosure: Print IPE information for thunks and functions
This makes it considerably easier to grok the structure of the heap
when IPE information is available.
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023f36f5 by Rodrigo Mesquita at 2025-01-10T14:57:48-05:00
user_guide: Note -pgmP/-optP are for /Haskell/-CPP
Fixes #25574
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e1c133f2 by Ben Gamari at 2025-01-10T14:58:25-05:00
dump-decls: Suppress unit-ids
While the testsuite driver already normalizes these away, they are
nevertheless a severe nuisance when diffing outside of the testsuite.
Intriguingly, this doesn't completely eliminate the unit IDs; some
wired-in names are still printed. However, this is a cheap and helpful
improvement over the status quo so I am simply going to accept this.
Fixes #25334.
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2e7bf446 by sheaf at 2025-01-13T10:55:26+01:00
Remove SDocs from ErrCtxt & ErrInfo
This commit:
- turns the SDoc used in ErrCtxt into a proper error datatype,
ErrCtxtMsg, which contains all the different error contexts that
can be added,
- replaces ErrInfo with [ErrCtxt].
ErrInfo used to contain two SDocs; the first is replaced with [ErrCtxt],
and the second is removed, with the relevant information being put
in the appropriate error message constructors.
Fixes #23436
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2d62b970 by Mike Pilgrem at 2025-01-13T12:59:10-05:00
Re CLC #300 - Specify fmap for NonEmpty as map
See:
* https://github.com/haskell/core-libraries-committee/issues/300
Seeks to:
* move existing instances for NonEmpty (except of Eq and Ord) out of GHC.Internal.Base into new GHC.Internal.Data.NonEmpty (to avoid otherwise unavoidable cycles in the module graph);
* move map out of Data.List.NonEmpty (base package) into GHC.Internal.Data.NonEmpty;
* define fmap as map for NonEmpty instance of Functor, avoiding code duplication;
* re-export map from existing GHC.Internal.Data.List.NonEmpty; and
* re-export map from Data.List.NonEmpty (base package);
without breaking anything in the GHC repository.
Various tests *.stdout and *.stderr files are amended also.
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ab3ab3e3 by Luite Stegeman at 2025-01-13T12:59:58-05:00
compiler/coreprep: Turn off dictionary speculation by default
Speculative evaluation can cause performance regressions,
therefore we turn it off by default. It can be enabled again
with the -fspec-eval-dictfun flag
See #25284
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3d9cacd5 by Patrick at 2025-01-14T02:34:46+08:00
Enhance kind inference for data family instances
This commit improves kind inference for data family instances by kind-checking
the constructors, for H98 and newtype declarations (ONLY), as well as
kind-checking the result kind signature (when using GADT syntax).
This fixes #25611.
Typechecker changes:
In `tcDataFamInstHeader`, we now kind-check the constructors using
`kcConDecls`, for H98-style decls and newtype decls ONLY.
See Note [Kind inference for data family instances].
Testsuite changes:
- The T25611{a,b,c,d} tests test the new kind inference implementation.
- a,b: infer result kind from constructors (H98 case)
- c: renamed version of test UnliftedNewtypesUnassociatedFamilyFail,
which now passes
- d: GADT case, checking that we don't infer overly rigid kinds when
kind-checking the constructors in data family instances.
- DataInstanceKindsDefaults tests defaulting data instance kinds
without UnliftedNewtypes or UnliftedDatatypes, as outlined in
Note [Defaulting result kind of newtype/data family instance].
Also a few notes are updated to reflect the changes.
Co-authored-by: default avatarSimon Peyton Jones <simon.peytonjones(a)gmail.com>
- - - - -
f6493dbc by amesgen at 2025-01-15T18:47:23-05:00
wasm: prevent bundlers from resolving import("node:timers")
This fixes the following esbuild error:
✘ [ERROR] Could not resolve "node:timers"
www/ghc_wasm_jsffi.js:66:25:
66 │ return (await import("node:timers")).setImmediate;
╵ ~~~~~~~~~~~~~
The package "node:timers" wasn't found on the file system but is built into node. Are you trying
to bundle for node? You can use "--platform=node" to do that, which will remove this error.
Previously (i.e. after !13503), one had to work around this by passing
`--external:node:timers`.
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87e82e2e by sheaf at 2025-01-16T14:51:45+01:00
Use checkTyEqRhs to make types concrete
This commit refactors makeTypeConcrete to call checkTyEqRhs with
the appropriate parameters. This avoids duplicating subtle logic
in two places in the compiler.
Changes:
1. Refactor of 'TyEqFlags'. Now 'TyEqFlags' stores a 'TEFTask', which
is a description of which of the following checks we want to
perform in 'checkTyEqRhs':
- occurs check
- level check
- concreteness check
In the process, the 'AreUnifying' datatype has been removed, as it
is no longer needed.
2. Refactor of 'checkTyVar':
a. Make use of the new 'TEFTask' data type to decide which checks
to perform.
In particular, this ensures that we perform **both** a
concreteness check and a level check when both are required;
previously we only did a concreteness check (that was a bug!).
b. Recursively call 'checkTyVar' on the kind of unfilled
metavariables. This deals with a bug in which we failed to
uphold the invariant that the kind of a concrete type must
itself be concrete. See test cases T23051, T23176.
3. Re-write of 'makeTypeConcrete', which now simply calls
'checkTyEqRhs' with appropriate 'TyEqFlags'/'TEFTask'.
This gets rid of code duplication and risk for the two code paths
going out-of-sync.
Fixes #25616. See also #23883.
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5a8f35bd by ARATA Mizuki at 2025-01-17T11:17:49-05:00
x86 NCG: Use correct format for MOVD in the implementation of unpackInt64X2#
MOVD takes the input format.
Fixes #25658
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14f8a7ec by Mateusz Goślinowski at 2025-01-17T22:49:09+00:00
Allow multiline strings in JS FFI (#25633)
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854c2f75 by Simon Peyton Jones at 2025-01-18T02:54:08-05:00
Fix a buglet in tcSplitForAllTyVarsReqTVBindersN
The problem was that an equation in `split` had two guards (one about
visiblity and one about `n_req`). So it fell thorugh if /either/
was False. But the next equation then assumed an invisible binder.
Simple bug, easily fixed. Fixes #25661.
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264a1186 by sheaf at 2025-01-18T10:05:56+00:00
Generalise GHC diagnostic code infrastructure
This commit generalises the infrastructure used for diagnostic codes,
allowing it to be used for other namespaces than the GHC namespace.
In particular, this enables GHCi to re-use the same infrastructure to
emit error messages.
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bf4f5ad3 by Jade at 2025-01-18T10:05:56+00:00
Add structured errors to GHCi (#23338)
This patch creates the 'GhciCommandErrorMessage' data type which
implents the 'Diagnostic' class and also provides error code for these
error conditions.
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b6f54188 by Ben Gamari at 2025-01-18T12:38:46-05:00
Revert "Division by constants optimization"
This appears to be responsible for the regression described in #25653.
This reverts commit daff1e30219d136977c71f42e82ccc58c9013cfb.
- - - - -
0fd90de8 by Ben Gamari at 2025-01-18T12:38:46-05:00
testsuite: Introduce div2 test
This is a useful test from !8392 which is worth keeping around.
- - - - -
32680979 by Ben Gamari at 2025-01-18T12:38:46-05:00
testsuite: Test shift correctness in mul2 test
- - - - -
163aa50a by Ben Gamari at 2025-01-18T12:38:46-05:00
testsuite: Add regression test for #25653
- - - - -
44778963 by Matthew Pickering at 2025-01-20T11:23:08+00:00
driver: Store an ExternalModuleGraph in the EPS
We now store an ExternalModuleGraph in the EPS. When an new interface is
loaded, the module graph is extended with a node for the loaded
interface. The result is a partial module graph. If you want to run
a transitive closure query on the graph you must first force the
transitive closure to be loaded by using `loadExternalGraphBelow`.
The primary advantage (for now) is that the transitive dependency
calculation does not have to be repeated in getLinkDeps. If your module
had many dependencies and many splices, performing this calculation at
every splice site took a significant amount of time.
We might also want to use this module graph in future for considering
questions such as reachability of rules or accessibilty of instance
imported by levelled imported.
This patch removes another place in the compiler where transitive
dependency is calculated in an ad-hoc manner. In general, the transitive
dependency calculation should be cached and computed using a ModuleGraph
abstraction.
The transitive dependency query required by getLinkDeps operates on a
graph without hs-boot nodes. If a linkable from a module in a loop is
needed, then all modules in the loop are necessary to be available to
execute that module. Therefore there is a query in `ModuleGraph` and
`ExternalModuleGraph` which allows a transitive closure query to be
performed on a graph without loops.
Fixes #25634
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
MultiLayerModulesTH_OneShot
Metric Increase:
mhu-perf
-------------------------
Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com>
- - - - -
b3c0acfc by Cheng Shao at 2025-01-20T11:53:10-05:00
hie: fix hie.yaml to use default hie-bios script
!13778 accidentally changed hie.yaml to use hie-bios.bat as the
default hie-bios script, which completely breaks hie support on
non-Windows platforms. This patch reverts that change.
- - - - -
595013d4 by Ben Gamari at 2025-01-21T09:57:23-05:00
compiler: Fix CPP guards around ghc_unique_counter64
The `ghc_unique_counter64` symbol was introduced in the RTS in the
64-bit unique refactor (!10568) which has been backported to %9.6.7 and
%9.8.4. Update the CPP to reflect this.
Fixes #25576.
- - - - -
09ee3247 by Ryan Scott at 2025-01-21T09:58:00-05:00
Fix :info pretty-printing of UNPACKed fields
This patch:
* Ensures that we do not pretty-print a field like `foo :: {-# UNPACK #-} !Int`
as `foo :: ! {-# UNPACK -#} Int` (as we were doing before) when running the
`:info` command.
* Prevents coercions that arise from `UNPACK`ed fields (e.g., such as when one
unpacks a newtype) from being printed in `:info` output unless `-dppr-debug`
is enabled.
Fixes #25651.
- - - - -
6b7ea592 by Rodrigo Mesquita at 2025-01-21T16:10:35-05:00
driver: Store the HomePackageTable in a mutable reference
This commit refactors the HomePackageTable and HomeUnitGraph:
(1) It fixes a quadratic-in-the-number-of-modules space leak in upsweep (#25511)
(2) And it reworks these structures into their own modules to simplify
the driver. The refactor is driven by the introduction of IO in the HPT
interface, but is a bit more aggressive in simplifying the
interfaces to enforce correct usage (ie to avoid performance
pitfalls).
Specifically:
- The `HomeUnitGraph` (HUG) is now in `GHC.Unit.Home.Graph`
- The `HomePackageTable` (HPT) is now in `GHC.Unit.Home.PackageTable`
- The HPT now stores an `IORef` with the table of loaded home package modules.
- The interface to the HPT now requires IO
- The interface now enforces that the HPT is a datastructure that
only grows
- This is not enforced in the interface, but, clients of the HPT
should never care about there being more or less entries in the
HPT when these additional entries are not relevant to their result.
- The exception to the invariant that the HPT is monotonically
increasing is `restrictHpt`, a function which is called at a
"barrier point" (during which there are no other threads
inspecting or inserting in the HPT). The invariant can be
temporarily broken at this point (currently, after upsweep).
This is safe because a single thread holds control over the
structure (thus the invariant being broken is never observed).
The hug_var and associated structures in the driver, which aimed to
improve memory usage in the driver by updating in place a HUG during
upsweep, are no longer required as the HPT entries in the HUG are now
themselves mutable by construction. This was previously explained in
Note [ModuleNameSet, efficiency and space leaks], which is no longer
relevant and was deleted.
Fixes #25511
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
-------------------------
Metric Decrease:
MultiComponentModulesRecomp
MultiLayerModulesRecomp
-------------------------
- - - - -
f983a00f by Jens Petersen at 2025-01-21T16:11:12-05:00
hp2ps/Utilities.c: add extern parameter types for malloc and realloc for C23
Fix build with gcc-15 which defaults to C23 standard (-std=gnu23)
Fixes #25662
```
utils/hp2ps/Utilities.c:6:14: error:
warning: conflicting types for built-in function ‘malloc’; expected ‘void *(long unsigned int)’ [-Wbuiltin-declaration-mismatch]
6 | extern void* malloc();
| ^~~~~~
|
6 | extern void* malloc();
| ^
utils/hp2ps/Utilities.c:5:1: error:
note: ‘malloc’ is declared in header ‘<stdlib.h>’
4 | #include "Error.h"
+++ |+#include <stdlib.h>
5 |
|
5 |
| ^
utils/hp2ps/Utilities.c: In function ‘xmalloc’:
utils/hp2ps/Utilities.c:80:17: error:
error: too many arguments to function ‘malloc’; expected 0, have 1
80 | r = (void*) malloc(n);
| ^~~~~~ ~
|
80 | r = (void*) malloc(n);
| ^
utils/hp2ps/Utilities.c:6:14: error:
note: declared here
6 | extern void* malloc();
| ^~~~~~
|
6 | extern void* malloc();
| ^
utils/hp2ps/Utilities.c: In function ‘xrealloc’:
utils/hp2ps/Utilities.c:92:18: error:
warning: conflicting types for built-in function ‘realloc’; expected ‘void *(void *, long unsigned int)’ [-Wbuiltin-declaration-mismatch]
92 | extern void *realloc();
| ^~~~~~~
|
92 | extern void *realloc();
| ^
utils/hp2ps/Utilities.c:92:18: error:
note: ‘realloc’ is declared in header ‘<stdlib.h>’
|
92 | extern void *realloc();
| ^
utils/hp2ps/Utilities.c:94:9: error:
error: too many arguments to function ‘realloc’; expected 0, have 2
94 | r = realloc(p, n);
| ^~~~~~~ ~
|
94 | r = realloc(p, n);
| ^
utils/hp2ps/Utilities.c:92:18: error:
note: declared here
92 | extern void *realloc();
| ^~~~~~~
|
92 | extern void *realloc();
| ^
```
- - - - -
51e3ec83 by Vladislav Zavialov at 2025-01-22T20:41:32+03:00
Rework built-in and punned names (#25174, #25179, #25180, #25182)
This patch rewrites part of the logic for dealing with built-in and
punned names, making it more principled and fixing a few bugs.
* Kill off filterCTuple. Its purpose was to improve pretty-printing of
constraint tuples, and the appropriate place for this is namePun_maybe.
* Remove unitTyCon, unboxedUnitTyCon, and soloTyCon from wiredInTyCons.
Their inclusion in the list was a workaround for shoddy logic in
lookupOrigNameCache. Now we treat tuples of all arities uniformly.
* In isBuiltInOcc_maybe, only match on actual built-in syntax, e.g. "FUN"
shouldn't be there (#25174). Also take ListTuplePuns into account (#25179).
* When matching OccNames, use the ShortByteString directly to avoid
potentially costly conversions to ByteString and String.
* Introduce isInfiniteFamilyOrigName_maybe, a purpose-built helper for
looking up tuples/sums in the OrigNameCache. This clears up the previously
convoluted relation between the orig name cache and built-in syntax.
* Reuse isKnownOrigName_maybe to eliminate the need for isPunOcc_maybe.
* Classify MkSolo and MkSolo# as UserSyntax, thus fixing whole-module
reexports (#25182).
* Teach valid-hole-fits about tuples, unboxed tuples, and unboxed sums,
up to a certain arity (#25180).
* Drop the unnecessary special case for unary constraint tuples in the
type checker (finish_tuple). It was a workaround for the lack of CSolo.
* Update Notes and other comments, add tests.
- - - - -
85c60aea by Teo Camarasu at 2025-01-23T18:06:21-05:00
doc: Add documentation for -XDoAndIfThenElse
Resolves #18631
Co-authored-by: Richard Eisenberg <rae(a)cs.brynmawr.edu>
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4495e48f by Brandon Chinn at 2025-01-24T11:54:24-05:00
Break out GHC.Parser.Lexer.Interface
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4f8fc11e by Brandon Chinn at 2025-01-24T11:54:24-05:00
Fix lexing comments in multiline strings (#25609)
Metric Decrease:
MultiLayerModulesRecomp
parsing001
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e7ab778f by Matthew Pickering at 2025-01-24T11:55:01-05:00
testsuite: Pass TEST_HC_OPTS to many more tests
This passes `-dno-debug-output` to the test and `-dlint.
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c3593101 by Sylvain Henry at 2025-01-24T23:12:20-05:00
Merge ghc-prim's modules into ghc-internal (#24453)
ghc-internal becomes the only wired-in package exposing primitives.
There are some minor GHC allocation regressions, but they barely cross
the thresholds and only with the wasm backend. They're likely due to
longer symbols (ghc-internal vs ghc-prim, GHC.Internal.X vs GHC.X).
Metric Increase:
T13035
T1969
T4801
T9961
- - - - -
70f7741a by Jens Petersen at 2025-01-24T23:12:58-05:00
hp2ps/Utilities.c: add extern parameter types for malloc and realloc for C23
use portable C types!
- - - - -
a1d92378 by Brandon Chinn at 2025-01-25T15:11:54-08:00
Fix for alex-3.5.2.0 (#25623)
This INLINE pragma for alexScanUser was added in 9.12, but then I
ported the change to alex in 3.5.2.0
(https://github.com/haskell/alex/pull/262)
I didn't realize that GHC errors on duplicate INLINE pragmas, so
this ended up being a breaking change.
This change should be backported into 9.12
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62760367 by ARATA Mizuki at 2025-01-27T16:23:06-05:00
x86 NCG: Make MOVD's output format explicit
The old design led to inference of a wrong format,
losing upper bits of a vector register.
Fixes #25659
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
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f19ab490 by Simon Hengel at 2025-01-27T16:23:45-05:00
doc: Correct JSON schema for `-fdiagnostics-as-json` (fixes #25393)
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e16eae65 by Cheng Shao at 2025-01-27T21:41:39+00:00
hadrian: fix bootstrap with 9.12.1
This patch bumps hadrian index-state to fix bootstrap with 9.12.1.
- - - - -
8071bad8 by Jeffrey Young at 2025-01-28T21:45:32-05:00
base: add SrcLoc changes to changelog, 4.21.0.0
I accidentally dropped this in !13381
- closes #25614
See:
- ea4587794b9e3a098f9c02bd6cea2294af2539ce (the 13381 commit)
- Issue #25614
- - - - -
9dcc7e28 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Rename `cloneBndrs` and such — now all the monadic ones have an `M` suffix.
We now have `cloneBndrs` and `cloneRecIdBndrs` which take a `UniqSupply` argument, and `cloneBndrsM` and `cloneRecIdBndrsM` which rather have a `MonadUnique` constraint.
- - - - -
643dd3d8 by Matthew Farkas-Dyck at 2025-01-29T02:27:48-05:00
Use `Infinite` in unique generation, and clean up some other partial uni patterns as well.
Also drop the losing `instance MonadFail UniqSM`.
We redefine `getUniquesM` in terms of `Infinite` rather than `[]`, and define another method `getUniqueListM` for the use sites where we actually want a `[]`.
Thus, at many sites, we can avoid the partiality of the empty list case.
We also define `withUniques`, `withUniquesM`, and `withUniquesM'`, which traverse an arbitrary `Traversable` structure and introduce a `Unique` for each element.
This allows us to redefine various functions to operate on more appropriate types than `[]` and avoid further partiality (in the form of incomplete-uni-patterns).
- - - - -
dd0acc3c by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Use `Infinite` in `GHC.Tc.Deriv.Functor`.
Make the list of variables to use in generated code `Infinite`, to avoid panicking on the (now impossible) empty list case.
- - - - -
4e9adedf by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Use `Infinite` in `GHC.Runtime.Debugger`.
Make the list of available names `Infinite`, to avoid panicking on the (now impossible) empty list case.
- - - - -
bed812b7 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Avoid incomplete-uni-patterns in `GHC.Cmm.DebugBlock`.
We do so by changing the type of `BlockContext` to statically (in GHC) exclude the possibility of Cmm statics, and using `NonEmpty` lists of `BlockContext`s in `cmmDebugGen`.
- - - - -
27587df3 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Avoid incomplete-uni-patterns in `GHC.Types.Literal`.
We do so by introducing `mkLitNumberWrap'` whose ultimate codomain is `Integer` rather than `Literal`, and then use that rather than `mkLitNumberWrap` where we just need the number rather than the `Literal`.
- - - - -
138de0ff by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Avoid incomplete-uni-patterns in `GHC.CmmToAsm.X86.CodeGen`.
- Match the vector element list only once in `shuffleInstructions`.
- Define `isSuitableFloatingPointLit_maybe` which returns `Just` the width if the lit is indeed suitable.
- - - - -
d8cb3d36 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Clean up more incomplete uni patterns.
At some sites, we merely panic if the `[]` or `Maybe` is empty when we convert to `NonEmpty` or `Identity`, but at least now we make it explicit.
At other sites, we are able to use more precise types and avoid the partiality altogether. To do so, we redefine various functions to operate over `Traversable` arguments, so we can use the appropriate shape where known.
- - - - -
f251bd22 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Outline `expectJustPanic`.
- - - - -
a963a1a5 by Marc Scholten at 2025-01-29T02:28:35-05:00
base: Introduce Data.Enum.enumerate (CLC #306)
https://github.com/haskell/core-libraries-committee/issues/306
- - - - -
944712da by Ben Gamari at 2025-01-29T02:29:13-05:00
base: Update description of locking behavior
- - - - -
85abc69c by Ben Gamari at 2025-01-29T02:29:51-05:00
base: Fix @since annotation of Data.Bounded
Fixes #25615.
- - - - -
2ca41c62 by Ben Gamari at 2025-01-29T02:30:29-05:00
StgToByteCode: Fix overly-broad handling of Addr# literals
Previously we assumed that all unlifted types were `Addr#` but this
isn't true. As noted in #25638, unlifted nullary data constructor
workers can also appear at the top-level and are obviously not of type
`Addr#`.
Note that there is more work to be done to properly handle unlifted data
constructors (especially nullary; see #25636). However, this is a small
step in the right direction.
Closes #25641.
- - - - -
ec26c54d by Ben Gamari at 2025-01-29T02:30:29-05:00
StgToByteCode: Assert that PUSH_G'd values are lifted
We currently do not support top-level unlifted data constructor applications,
therefore this is a safe assertion.
Pointed out by @sheaf.
- - - - -
8847125f by Ben Gamari at 2025-01-29T02:31:07-05:00
gitlab-ci: Run test-primops testsuite in ~"full-ci" pipeline
Closes #25654.
- - - - -
bf8c7d6e by Matthew Pickering at 2025-01-29T02:31:44-05:00
bytecode: Do not generate `SLIDE x 0` instructions
SLIDE x 0 is a no-op as it means to shift x elements of the stack by no
spaces. In the interpreter, this results in a loop which copies an array
element into the same place.
I have instrumented GHCi to count how many of these instructions are interpreted.
The workload was `ghc` compiling two simple modules.
Total no-op slides: 7793476
Total slides: 11413289
Percentage useless (slides): 68%
Percentage uselss of total instructions: 9%
- - - - -
7bfc93a7 by Zubin Duggal at 2025-01-29T21:41:17-05:00
hackage-doc-tarball: Allow ghc-boot-th to be uploaded to hackage
It can't refer to files outside its source directory, so patch that part out.
This is OK because those files are only used while bootstrapping.
Also add ghci to the list of packages to be uploaded
Fixes #25687
- - - - -
704eeb02 by Roman S at 2025-01-29T21:42:05-05:00
Fix Control.Arrow (***) diagram (fixes #25698)
- - - - -
662645f0 by Matthew Pickering at 2025-02-03T11:44:41-05:00
compiler: Always load GHC.Data.FastString optimised into GHCi
The FastString table is shared between the boot compiler and interpreted
compiler. Therefore it's very important the representation of
`FastString` matches in both cases. Otherwise, the interpreter will read
a FastString from the shared variable but place the fields in the wrong
place which leads to segfaults.
Ideally this state would not be shared, but for now we can always
compile both with `-O2` and this leads to a working interpreter.
- - - - -
05e5785a by Peter Trommler at 2025-02-03T11:45:17-05:00
RTS: Fix compile on powerpc64 ELF v1
Cabal does not know about the different ABIs for powerpc64 and compiles
StgCRunAsm.S unconditionally. The old make-based build system excluded
this file from the build and it was OK to signal an error when it was
compiled accidentally.
With this patch we compile StgCRunAsm.S to an empty file, which fixes
the build.
Fixes #25700
- - - - -
cbbb64fb by Matthew Pickering at 2025-02-03T23:40:33-05:00
interpreter: Always print unit and module name in BCO_NAME instruction
Currently the BCO_Name instruction is a bit difficult to use since the
names are not qualified by the module they come from. When you have a
very generic name such as "wildX4", it becomes impossible to work out
which module the identifier comes from.
Fixes #25694
- - - - -
764a43ac by Ben Gamari at 2025-02-03T23:41:10-05:00
upload-ghc-libs: Drop more references to ghc-internal from ghc-boot-th
(cherry picked from commit afec4b75c2d0e9f5c462a86d9f3697acf30355c7)
Co-authored-by: Ben Gamari <bgamari.foss(a)gmail.com>
- - - - -
9a59b026 by Ben Gamari at 2025-02-04T10:00:18-05:00
gitlab-ci: Don't use .full-ci to run test-primops
test-primops depends upon the existence of validate jobs, yet these do
not exist in the context of nightly jobs, which .full-ci includes.
- - - - -
7cc08550 by Ben Gamari at 2025-02-04T18:34:49-05:00
CorePrep: Name `sat` binders more descriptively
- - - - -
fb40981d by Ben Gamari at 2025-02-04T18:35:26-05:00
ghc-toolchain: Parse i686 triples
This is a moniker used for later 32-bit x86 implementations
(Pentium Pro and later).
Fixes #25691.
- - - - -
02794411 by Cheng Shao at 2025-02-04T18:36:03-05:00
compiler: remove unused assembleOneBCO function
This patch removes the unused assembleOneBCO function from the
bytecode assembler.
- - - - -
db19c8a9 by Matthew Pickering at 2025-02-05T23:16:50-05:00
perf: Replace uses of genericLength with strictGenericLength
genericLength is a recursive function and marked NOINLINE. It is not
going to specialise. In profiles, it can be seen that 3% of total compilation
time when computing bytecode is spend calling this non-specialised
function.
In addition, we can simplify `addListToSS` to avoid traversing the input
list twice and also allocating an intermediate list (after the call to
reverse).
Overall these changes reduce the time spend in 'assembleBCOs' from 5.61s
to 3.88s. Allocations drop from 8GB to 5.3G.
Fixes #25706
- - - - -
5622a14a by Matthew Pickering at 2025-02-05T23:17:27-05:00
perf: nameToCLabel: Directly manipulate ByteString rather than going via strings
`nameToCLabel` is called from `lookupHsSymbol` many times during
bytecode linking. We can save a lot of allocations and time by directly
manipulating the bytestrings rather than going via intermediate lists.
Before: 2GB allocation, 1.11s
After: 260MB allocation, 375ms
Fixes #25719
-------------------------
Metric Decrease:
MultiLayerModulesTH_OneShot
-------------------------
- - - - -
66c7f656 by Matthew Pickering at 2025-02-06T17:15:25-05:00
interpreter: Fix INTERP_STATS profiling code
The profiling code had slightly bitrotted since the last time it was
used. This just fixes things so that if you toggle the INTERP_STATS
macro then it just works and prints out the stats.
Fixes #25695
- - - - -
f71c2835 by Matthew Pickering at 2025-02-06T17:16:02-05:00
perf: Key the interpreter symbol cache by Name rather than FastString
Profiles showed that about 0.2s was being spend constructing the keys
before looking up values in the old symbol cache.
The performance of this codepath is critical as it translates directly
to a delay when a user evaluates a function like `main` in the
interpreter.
Therefore we implement a solution which keys the cache(s) by `Name`
rather than the symbol directly, so the cache can be consulted before
the symbol is constructed.
Fixes #25731
- - - - -
8f8d3a90 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label threads forked by IO operations
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
28600825 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label threads forked by System.Timeout
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
8a249827 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label signal handling threads
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
26af26f0 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label Windows console event handling threads
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
bf9c3d4f by Ben Gamari at 2025-02-08T01:17:28-05:00
ghci: Label evaluation sandbox thread
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
38f78ce5 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Add changelog entry for addition of thread labels
Addresses #25452.
Addresses core-libraries-committee#305.
- - - - -
c100deb5 by Ben Gamari at 2025-02-08T01:18:05-05:00
gen-ci: Clean up style
This cleans up a number of stylistic inconsistencies although it's still
far from perfect.
- - - - -
c4a7680a by Ben Gamari at 2025-02-08T01:18:05-05:00
gen-ci: Properly encapsulate GitLab predicates
- - - - -
52b6539b by M Farkas-Dyck at 2025-02-08T11:34:51-08:00
Avoid partiality in `Language.Haskell.Syntax.Expr`, `GHC.Hs.Expr`, `GHC.Rename.Expr`, etc.
In particular, use `NonEmpty` where appropriate:
- the argument of `FieldLabelString`
- the argument of `HsMultiIf`
- `grhssGRHSs`
Decreases overall compile-time allocation by about 0.1% in the benchmark suite (min -0.8%, max +0.3%).
Metric Decrease:
T3294
- - - - -
a566da92 by Ben Gamari at 2025-02-10T03:21:49-05:00
gitlab-ci: Bump docker images
Closes #25693.
- - - - -
a7e23f01 by Ben Gamari at 2025-02-10T03:21:49-05:00
hadrian: Drop uses of head/tail
To silence warnings with GHC 9.10
- - - - -
12752f0c by Ben Gamari at 2025-02-10T03:21:49-05:00
hadrian: Disable x-data-list-nonempty-unzip warning
- - - - -
e22a14fc by Simon Peyton Jones at 2025-02-11T16:21:10+00:00
Deal correctly with Given CallStack constraints
As #25675 showed, the CallStack solving mechanism was failing
to account for Given CallStack constraints.
This small patch fixes it and improves the Notes.
Small improvement to GHCi debugger output in break011, break024,
which is discussed on the MR !13883
- - - - -
db3e810f by Simon Peyton Jones at 2025-02-12T09:12:30-05:00
Fix inlineBoringOk again
This MR fixes #25713, which turned out to be a consequence of not
completing #17182.
I think I have now gotten it right. See the new
Note [inlineBoringOk]
- - - - -
ef0e6cfc by Ben Gamari at 2025-02-17T19:20:09-05:00
testsuite: Mark T23071 and T2047 as fragile on FreeBSD
These inexplicably fail on FreeBSD on CI. Sadly I am unable to reproduce
this locally but regardless this is holding up Marge so I will mark them
as fragile for now.
Addresses #25751.
- - - - -
7596675e by Jens Petersen at 2025-02-18T08:53:08-05:00
hp2ps Utilities.c: include stdlib.h instead of extern malloc and realloc
- - - - -
975d932c by Rodrigo Mesquita at 2025-02-18T08:53:45-05:00
Inline join points for rhs without free vars
While investigating #25170, we ran into a program (T16473) that allocated 67%
more because of a join point that failed to inline.
Note [Duplicating join points] explains why we want to be conservative
when inlining join points, using as an example a join point that
captures a free variable `f` that becomes available in the continuation
`blah` for further optimisations, as opposed to being lambda-abstracted.
However, when the RHS of the join point has no free variables and is
trivial, the same argument does not apply, and there's nothing to gain
from preserving it.
On the contrary, not inlining these trivial join points such as
$j f x = K f x |> co
can be actively harmful as they prevent useful optimisations from firing
on the known constructor application. #25723 is such an example.
Therefore, we've extended `uncondInlineJoin` to allow duplicating such closed
trivial join points. See the updated Note [Duplicating join points] for
further details.
Additionally, merge the guards in uncondInlineJoin for point DJ3(b) anad DJ3(c) of
Note [Duplicating join points] to avoid an unnecessary traversal in the
call to `collectArgs`; it's also more uniform.
Co-authored-by: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Fixes #25723
- - - - -
78de1a55 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
Scrub some partiality in `GHC.Tc.Gen.Match`.
In particular, we construct a list of the same length as another list, then loop over both and panic if their lengths are unequal. We can avoid this.
- - - - -
1dfe9325 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
Make list of `ParStmtBlock` in `ParStmt` `NonEmpty`.
In the ParStmt constructor Language.Haskell.Syntax.Expr.StmtLR, the 2nd argument, the list of ParStmtBlocks, must be NonEmpty; make it so.
- - - - -
0e3575b5 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
GHC.Tc.Gen.Match: Added type signatures for `loop` functions.
- - - - -
c9ffcfee by sternenseemann at 2025-02-18T08:55:14-05:00
GHC: fix reference to function in Note [Target code interpreter]
As far as I could tell, setSessionDynFlags doesn't deal with hsc_interp.
Also added a backreference so this will be updated in the future.
- - - - -
ab77fc8c by sheaf at 2025-02-18T08:55:57-05:00
Account for skolem escape in mightEqualLater
This commit:
1. Refactors checkTyEqRhs to allow it be called in pure contexts,
which means it skips doing any on-the-fly promotion.
2. Calls checkTyEqRhs in mightEqualLater to check whether it a
MetaTv can unify with a RHS or whether that would cause e.g.
skolem escape errors or concreteness errors.
Fixes #25744
- - - - -
cb8a06a4 by Sylvain Henry at 2025-02-18T08:56:52-05:00
Remove a bunch of Makefiles from old build system
- - - - -
e12d6b39 by M Farkas-Dyck at 2025-02-18T08:57:37-05:00
Totalize `GHC.HsToCore.Match.matchWrappers.initNablasGRHSs`.
Converting from `NonEmpty` to `[]` and back is totally needless.
- - - - -
cd2be3be by Matthew Pickering at 2025-02-18T08:58:14-05:00
interpreter: Always print uniques for BCO_NAME labels
In the previous commit I omitted to include the unique, which still
makes it very difficult to trace back where the BCO came from.
- - - - -
c4e112fc by Matthew Pickering at 2025-02-18T08:58:51-05:00
interpreter: Fix overflows and reentrancy in statistics calculation
1. Use unsigned long for counter, as they can easily overflow if you are
running a long benchmark.
2. Make interp_shutdown reentrant by copying the command frequency table
into an array.
Fixes #25756
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70ac6222 by M Farkas-Dyck at 2025-02-18T14:22:06-08:00
Use `Foldable1` where appropriate, avoiding much needless panicking.
In some cases, where not readily feasible to modify code to use `NonEmpty`, merely use `expectNonEmpty` to make explicit we are panicking if we have an empty list.
- - - - -
a3f0a506 by Sylvain Henry at 2025-02-19T05:27:30-05:00
Testsuite: fix deprecation warning
> DeprecationWarning: 'count' is passed as positional argument
- - - - -
ef5470a2 by Ben Gamari at 2025-02-19T16:30:53+00:00
Cmm/Parser: Add surface syntax for Mul2 MachOps
These are otherwise very hard to test in isolation.
- - - - -
59b9307b by Cheng Shao at 2025-02-19T20:24:40-05:00
testsuite: fix InternalCounters test with +debug_ghc
The `InternalCounters` test case fails when ghc is built with
`+debug_ghc`. This patch skips it in that case and allows the
testsuite to pass for the `+debug_ghc` flavour transformer.
- - - - -
aa69187d by M Farkas-Dyck at 2025-02-19T20:25:31-05:00
Scrub a use of `head` in `GHC.Driver.Make.downsweep_imports.checkDuplicates`.
- - - - -
1c8e608a by Cheng Shao at 2025-02-21T20:18:41-05:00
compiler: use fromAscList when applicable
This patch uses fromAscList (with O(n) complexity) instead of fromList
(with O(nlogn) complexity) in certain Binary instances. It's safe to
do so since the corresponding serialization logic is based on toList
(same as toAscList).
- - - - -
549e0aff by Ben Gamari at 2025-02-21T20:19:18-05:00
rts/linker/MachO: Mark internal symbols as static
There is no reason why these should have external linkage.
- - - - -
fbf3d020 by Cheng Shao at 2025-02-22T07:41:01-05:00
wasm: bump dyld v8 heap size limit
This patch sets `--max-old-space-size=65536` as wasm dyld shebang
arguments to lessen v8 heap pressure in certain workloads that load
the full ghc package. It doesn't really commit 64G memory but it does
help reduce v8 gc overhead.
- - - - -
cb60da24 by Cheng Shao at 2025-02-22T07:41:01-05:00
wasm: fix dyld for shared libraries created by llvm 20.x
This patch fixes wasm dyld script for shared libraries created by llvm
20.x. The __wasm_apply_data_relocs function is now optional and may be
omitted for shared libraries without any runtime relocatable data
segments, so only call __wasm_apply_data_relocs when it's present.
- - - - -
7eea38c8 by Cheng Shao at 2025-02-22T07:41:37-05:00
driver: fix wasm backend sysroot lookup logic when -flto is passed
For the wasm target, the driver calls `wasm32-wasi-clang
--print-search-dirs` and finds the sysroot directory that contains
libc.so etc, then passes the directory path to dyld. However, when GHC
is configured with -flto as a part of C/C++ compiler flags, the clang
driver would insert a llvm-lto specific directory in the
--print-search-dirs output and the driver didn't take that into
account. This patch fixes it and always selects the non-lto sysroot
directory to be passed to dyld. This is one small step towards
supporting building all cbits with lto for wasm.
- - - - -
f3bfe31e by Cheng Shao at 2025-02-23T14:06:25-05:00
wasm: add Note [Variable passing in JSFFI] as !13583 follow up
This patch adds a note to explain how the magic variables like
`__ghc_wasm_jsffi_dyld` are brought into scope of JSFFI code snippets,
as follow up work of !13583.
- - - - -
c318be56 by Cheng Shao at 2025-02-23T14:07:02-05:00
libffi: update to 3.4.7
Bumps libffi submodule.
- - - - -
33aca30f by sheaf at 2025-02-25T08:58:46-05:00
LLVM: account for register type in funPrologue
We were not properly accounting for the live register type of
global registers in GHC.CmmToLlvm.CodeGen.funPrologue. This meant that
we could allocated a register at type <4 x i32> but try to write to it
at type <8 x i16>, which LLVM doesn't much like.
This patch fixes that by inserting intermerdiate casts when necessary.
Fixes #25730
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0eb58b0e by sheaf at 2025-02-25T08:59:29-05:00
base: make Data.List.NonEmpty.unzip match Data.List
This commit makes Data.List.NonEmpty.unzip match the implementation
of Data.List, as was suggested in approved CLC proposal #107.
- - - - -
f4da90f1 by Matthew Pickering at 2025-02-25T14:11:21-05:00
interpreter: Fix underflow frame lookups
BCOs can be nested, resulting in nested BCO stack frames where the inner most
stack frame can refer to variables stored on earlier stack frames via the
PUSH_L instruction.
|---------|
| BCO_1 | -<-┐
|---------|
......... |
|---------| | PUSH_L <n>
| BCO_N | ->-┘
|---------|
Here BCO_N is syntactically nested within the code for BCO_1 and will result
in code that references the prior stack frame of BCO_1 for some of it's local
variables. If a stack overflow happens between the creation of the stack frame
for BCO_1 and BCO_N the RTS might move BCO_N to a new stack chunk while leaving
BCO_1 in place, invalidating a simple offset based reference to the outer stack
frames.
Therefore `ReadSpW` first performs a bounds check to ensure that accesses onto
the stack will succeed. If the target address would not be a valid location for
the current stack chunk then `slow_spw` function is called, which dereferences
the underflow frame to adjust the offset before performing the lookup.
┌->--x | CHK_1 |
| CHK_2 | | | |---------|
|---------| | └-> | BCO_1 |
| UD_FLOW | -- x |---------|
|---------| |
| ...... | |
|---------| | PUSH_L <n>
| BCO_ N | ->-┘
|---------|
Fixes #25750
- - - - -
c3f2d284 by Vladislav Zavialov at 2025-02-25T14:11:58-05:00
Remove ArgPatBuilder
ArgPatBuilder in Parser/PostProcess.hs became redundant with the
introduction of InvisPat (36a75b80eb).
This small refactoring removes it.
- - - - -
0f2241e9 by sheaf at 2025-02-25T19:23:21-05:00
Propagate long distance info to guarded let binds
This commit ensures that we propagate the enclosing long distance
information to let bindings inside guards, in order to get accurate
pattern-match checking warnings, in particular incomplete record
selector warnings.
Example:
data D = K0 | K1 { fld :: Int }
f :: D -> Int
f d@(K1 {})
| let i = fld d
= i
f _ = 3
We now correctly recognise that the field selector 'fld' cannot fail,
due to the outer pattern match which guarantees that the value 'd' has
the field 'fld'.
Fixes #25749
- - - - -
64b0d4d0 by Fangyi Zhou at 2025-02-25T19:24:07-05:00
wasm: use primitive opcodes for fabs and sqrt
- Add new `WasmInstr` constructor `WasmSqrt` for sqrt, corresponding to
primitivie operations in wasm.
- When lowering CallishMachOp, use `WasmAbs` and `WasmSqrt` for F32 and
F64 fabs and sqrt.
- - - - -
272eaef0 by Cheng Shao at 2025-02-25T19:24:43-05:00
hadrian: enable building stage1 haddock for cross ghc
This commit enables building stage1 haddock for cross ghc. Without
this change, hadrian would panic with "Unknown program" error when
building the _build/stage1/bin/cross-prefix-haddock program needed by
the docs-haddock target, even if it only needs to copy from
_build/stage0/bin/cross-prefix-haddock.
- - - - -
a794e733 by Cheng Shao at 2025-02-25T19:24:43-05:00
hadrian: enable building docs for cross targets
Hadrian used to omit the docs target as a part of binary-dist-dir for
cross targets. This commit enables docs to be built as a part of cross
bindists and it works just fine in CI.
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6dba56e1 by Cheng Shao at 2025-02-25T19:24:43-05:00
ci: build haddock/sphinx-html for wasm jobs
This commit enables building haddock & sphinx-html documentation for
wasm targets. The docs are useful for end users and should be tested
in CI.
I've omitted pdf & manpage generation for the wasm target; I've never
found the pdf version of docs to be useful, and the manpage only
contains `ghc.1` where we really want `wasm32-wasi-ghc.1` but that
should be a separate issue to fix.
- - - - -
2d6a63ab by Cheng Shao at 2025-02-25T19:25:20-05:00
ghci: remove unused showBreakArray function
GHCi.BreakArray.showBreakArray is not used anywhere, hence the
housecleaning.
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b228fcb5 by Cheng Shao at 2025-02-25T19:25:57-05:00
ghc-heap: fix HalfWord incompatible Binary instances for cross GHC
ghc-heap defines HalfWord as Word32/Word16 depending on host word
size. For cross GHC with different host/target word sizes, the Binary
instances are incompatible and breaks iserv serialization of any
message type that involves HalfWord, breaking the ghci debugger. This
patch fixes the issue and has been tested to fix ghci debugger
functionality of the wasm backend. Fixes #25420 #25781.
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ec02f8c2 by Rodrigo Mesquita at 2025-02-26T11:03:38-05:00
ghci-debugger: display thunks provenance if avail
Improves reporting on ghci breakpoints when IPE information is available
by printing, next to the thunk, the source file and src span where the
thunk originated.
Closes #25746
- - - - -
6acaff2b by Vladislav Zavialov at 2025-02-26T11:04:15-05:00
Tidy up error messages for TypeAbstractions
1. Print the '@' symbol before invisible patterns and improve phrasing:
T24557c.hs:8:4: error: [GHC-11983]
- Invisible type pattern pat is not allowed here
+ Illegal invisible type pattern: @pat
+ An invisible type pattern must occur in an argument position.
2. Use a single error code for all type abstractions deemed illegal
due to the TypeAbstractions extension being disabled.
Before this change:
* [GHC-78249] was used in function equations, lambdas
* [GHC-17916] was used in constructor patterns
After this change:
* [GHC-78249] is used to report all illegal type abstractions
* [GHC-17916] is no longer used
There was no reason for both error codes to exist and this distinction
was a source of complexity in GHC/Tc/Errors/* and GHC/Rename/Pat.hs
3. Group the different "invisible type pattern" error constructors
under a single parent constructor, TcRnIllegalInvisibleTypePattern
containing BadInvisPatReason
- - - - -
1ce9502e by Ben Gamari at 2025-02-27T04:48:29-05:00
haddock/doc: Drop version and release
We currently have no way of keeping this up-to-date with the project version
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7f358f25 by Matthew Pickering at 2025-02-27T04:49:06-05:00
testsuite: Add test for :steplocal performance
This adds a simple test which exercises #25779
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a6a3ffa6 by Sven Tennie at 2025-02-27T23:34:47-05:00
Do not deallocate stack for jump/switch table jumps
Though the name is misleading, we consider them to be branching. For
branch instructions we do not deallocate (parts of) the stack, but keep
the stack pointer (sp) intact.
- - - - -
39e51ddb by Sven Tennie at 2025-02-27T23:34:47-05:00
Add reproducer for dealloc instructions in switch table jump expressions (#25733)
Measures taken to make the test stable:
- Use 'a' as variable prefix, because X86 32bit stumbled over the
variable name 'i386'
- Flush stdout to make test output deterministic
- Use type annotations to support 32bit archs
- - - - -
d427df93 by Sylvain Henry at 2025-02-27T23:35:30-05:00
Remove redundant location strings in expectJust and friends (#25743)
Now we can use HasDebugCallStack instead to avoid cluttering the code
with strings and to avoid maintaining those strings (e.g. renaming them
when functions are renamed...).
- - - - -
90f1190e by Ben Gamari at 2025-02-28T20:53:53-05:00
compiler: Add export list to GHC.SysTools.Tasks
- - - - -
ec826009 by Ben Gamari at 2025-02-28T20:53:53-05:00
compiler: Pass --target to llvm-as
As noted in #25793, this is necessary due to potential ambiguity on
Apple machines with Rosetta.
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9c1647d1 by Andreas Klebinger at 2025-02-28T20:54:30-05:00
cmmMachOpFoldM: Add missing pattern matches for bitcasts.
Fixes #25771
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3b78e139 by John Ericson at 2025-03-03T15:27:39-05:00
Remove most of `GHC.Internal.Pack`
Since bd82ac9f4716e28b185758ae514691d5a50c003f when `GHC.Pack` was
deleted, it is no longer used except for one function by the RTS.
- - - - -
b4fe0850 by Rodrigo Mesquita at 2025-03-03T15:28:16-05:00
ghci: Don't set virtualCWD on every iteration
The calls to withVirtualCWD were introduced to fix #2973, but this bug
is no longer reproducible, even when `withVirtualCWD` is dropped.
This cleanup was originally motivated by the performance of :steplocal,
but the performance problem has now been fixed at its root in the next
commit.
Even then, `withVirtualCWD` seems to now be an unnecessary artifact, and
removing it simplifies the interpreter with no apparent drawbacks (testsuite is
also happy with this change)
- - - - -
73ba1e6e by Rodrigo Mesquita at 2025-03-03T15:28:16-05:00
ghci debugger: improve break/resume control flow
After interpreting bytecode (`evalStmt`), we may want to hand off
control to "GHCi.UI" in order to display an interactive break prompt:
1. When an /active/ breakpoint (one set with :break ...) is hit
2. At any breakpoint, when using :step from a breakpoint
3. At any breakpoint in the same function f, when :steplocal is called
from a breakpoint in f
4. At any breakpoint in the same module, when :stepmodule is used
Whether to pass control to the UI is now fully determined by
`handleRunStatus` which transforms an `EvalStatus_` into an
`ExecResult`. When `ExecBreak` is returned from `handleRunStatus` to
GHCi, it always means GHCi breaks.
`handleRunStatus` determines whether to loop and resume evaluation right away, or
when to return to GHCi (by returning `ExecBreak` or `ExecComplete`).
- (1) is queried using the `BreakpointStatus` message (the
`breakpointStatus` call)
- (2,3,4) are determined by the predicate `breakHere step span`, which
inspects the improved `SingleStep` type to determine whether we care
about this breakpoint even if it is not active.
This refactor solves two big performance problems with the previous control flow:
- We no longer call `withArgs/withProgram` repeatedly in the
break/resume loop, but rather just once "at the top".
- We now avoid computing the expensive `bindLocalsAtBreakpoint` for
breakpoints we'd never inspect.
In the interpreter_steplocal test added, calling `:steplocal` after breaking on `main = fib 25`
now takes 12 seconds rather than 49 seconds on my machine.
```
interpreter_steplocal(ghci) ghc/alloc 6,124,821,176 540,181,392 -91.2% GOOD
```
Fixes #25779
-------------------------
Metric Decrease:
interpreter_steplocal
-------------------------
- - - - -
c78d8f55 by Cheng Shao at 2025-03-03T20:54:41+00:00
rts: fix top handler closure type signatures
This commit fixes the runIO/runNonIO closure type signatures in the
RTS which should be extern StgClosure. This allows us to remove an
unnecessary type cast in the C foreign desugaring logic, as well as
unneeded complications of JSFFI desugaring logic that also needs to
generate C stubs that may refer to those top handler closures.
Otherwise, we'll have to take special care to avoid generating "extern
StgClosure" declarations for them as we would for other closures, just
to avoid conflicting type signature error at stub compile time.
- - - - -
a204df3a by Cheng Shao at 2025-03-03T20:54:41+00:00
compiler: allow arbitrary label string for JSFFI exports
This commit allows arbitrary label string to appear in a foreign
export declaration, as long as the calling convention is javascript.
Well, doesn't make sense to enforce it's a C function symbol for a
JSFFI declaration anyway, and it gets in the way of implementing the
"sync" flavour of exports.
- - - - -
03ebab52 by Cheng Shao at 2025-03-03T20:54:41+00:00
compiler: wasm backend JSFFI sync exports
This commit implements the synchronous flavour of the wasm backend
JSFFI exports:
- `foreign export javascript "foo sync"` exports a top-level Haskell
binding as a synchronous JS function
- `foreign import javascript "wrapper sync"` dynamically exports a
Haskell function closure as a synchronous JS function
- `foreign import javascript unsafe` is now re-entrant by lowering to
a safe ccall
- Also fix the issue that JSFFI dynamic exports didn't really work in
TH & ghci (#25473)
- - - - -
b6ae908b by Cheng Shao at 2025-03-03T20:54:41+00:00
testsuite: test wasm backend JSFFI sync exports
This commit repurposes some existing JSFFI test cases to make them
cover JSFFI sync exports as well.
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edae2874 by Cheng Shao at 2025-03-03T20:54:41+00:00
docs: document wasm backend JSFFI sync exports
This commit updates wasm backend documentation to reflect the new
JSFFI sync exports feature.
- - - - -
9b54eecb by Cheng Shao at 2025-03-03T20:56:21+00:00
wasm: add error message to WouldBlockException
This commit attaches an error message to WouldBlockException, for now
the error message consists of the JS async import code snippet that
thunk is trying to block for. This is useful for debugging synchronous
callbacks that accidentally call an async JS function.
- - - - -
c331eebf by Cheng Shao at 2025-03-04T09:11:45-05:00
compiler: avoid overwriting existing writers in putWithTables
This patch makes `putWithTables` avoid overwriting all existing
UserData writers in the handle. This is crucial for GHC API users that
use putWithUserData/getWithUserData for serialization logic that
involve Names.
- - - - -
e9b7802b by Matthew Pickering at 2025-03-04T09:12:21-05:00
ghci: Serialise mi_top_env
When loading core from interface files (or from a bytecode object in
future) it's important to store what the top-level context of a module
is.
Otherwise, when you load the module into GHCi from the interface files,
only exported identifiers from the top-level module are in scope on the
repl.
See the added test which demonstrates what this enables.
The context at the GHCi prompt is everything that's in-scope in the
TopEnvIface module. Since TopEnvIface imports identifier "a", we can
evaluate "a" in the repl.
In addition to all this, we can use this information in order to
implement reifyModule in a more principled manner.
This becomes even more important when you're debugging and what to set
break-points on functions which are not imported.
- - - - -
73e02068 by Matthew Pickering at 2025-03-04T09:12:21-05:00
Implement reifyModule in terms of mi_top_env
mi_top_env provides precisely the information that reifyModule needs,
the user written imports.
This is important as it unblocks !9604 and #22188
Fixes #8489
- - - - -
0a99825d by Ben Gamari at 2025-03-04T09:12:57-05:00
hadrian: Refactor handling of test suite environment
Previously we would set the environment variables used to run the
testsuite driver using `setEnv` to set them in the Hadrian process.
While looking into failures of a fix to #25752 I noticed this and took
the opportunity to refactor.
- - - - -
7ca72844 by Alan Zimmerman at 2025-03-04T09:13:34-05:00
[EPA] Sync with the ghc-exactprint repo
This brings it into line with the changes in
https://hackage.haskell.org/package/ghc-exactprint-1.12.0.0
But also keeps the latest changes from master.
- - - - -
8f6cc90c by Matthew Pickering at 2025-03-05T04:48:02-05:00
perf: Speed up the bytecode assembler
This commit contains a number of optimisations to the bytecode
assembler. In programs which generate a large amount of bytecode, the
assembler is called a lot of times on many instructions.
1. Specialise the assembleI function for the two intepreters to avoid
having to materialise the intermediate free-monad like structure.
2. Directly compute the UArray and SmallArray needed rather than going
via the intermediate SizedSeq
3. Use optimised monads
4. Define unrolled "any" and "mapM6" functions which can be inlined
and avoid calling recursive functions.
The resulting generated code is much more direct.
Before:
./ByteCodeAsm /home/matt/ghc-profiling-light/_build/stage1/lib/ +RTS -s
48,923,125,664 bytes allocated in the heap
678,221,152 bytes copied during GC
395,648 bytes maximum residency (2 sample(s))
50,040 bytes maximum slop
6 MiB total memory in use (0 MiB lost due to fragmentation)
Tot time (elapsed) Avg pause Max pause
Gen 0 11731 colls, 0 par 0.419s 0.425s 0.0000s 0.0004s
Gen 1 2 colls, 0 par 0.001s 0.001s 0.0007s 0.0012s
INIT time 0.000s ( 0.000s elapsed)
MUT time 6.466s ( 6.484s elapsed)
GC time 0.421s ( 0.426s elapsed)
EXIT time 0.000s ( 0.000s elapsed)
Total time 6.887s ( 6.910s elapsed)
After:
1,518,321,200 bytes allocated in the heap
4,299,552 bytes copied during GC
322,288 bytes maximum residency (2 sample(s))
50,280 bytes maximum slop
6 MiB total memory in use (0 MiB lost due to fragmentation)
Tot time (elapsed) Avg pause Max pause
Gen 0 369 colls, 0 par 0.003s 0.003s 0.0000s 0.0002s
Gen 1 2 colls, 0 par 0.001s 0.001s 0.0007s 0.0012s
INIT time 0.001s ( 0.001s elapsed)
MUT time 0.465s ( 0.466s elapsed)
GC time 0.004s ( 0.004s elapsed)
EXIT time 0.000s ( 0.000s elapsed)
Total time 0.470s ( 0.471s elapsed)
- - - - -
f2d43e11 by Teo Camarasu at 2025-03-05T04:48:40-05:00
ghc-boot-th: expose all TH packages from proper GHC.Boot.* modules
Previously we defined some modules here in the GHC.Internal namespace.
Others were merely re-exposed from GHC.Internal.
Re-exposed modules weren't handled correctly by Haddock, so the
Haddocks for the `template-haskell` library couldn't see them.
This change also makes the home package of these modules a bit clearer.
Work towards #25705
- - - - -
91ef82df by Teo Camarasu at 2025-03-05T04:48:40-05:00
ghc-boot-th: fix synopsis formatting
`@...@` syntax doesn't seem to work in synposes and is just kept by
Haddock verbatim.
- - - - -
eb9fe1ec by Brandon Chinn at 2025-03-05T04:49:17-05:00
Collapse string gaps as \& (#25784)
In 9.10, "\65\ \0" would result in "A0", but in 9.12, it results in
"\650", due to the string refactoring I did in !13128. Previously, we
were resolving escape codes and collapsing string gaps as we come across
them, but after the refactor, string processing is broken out into
phases, which is both more readable and useful for multiline strings.
- - - - -
8037f487 by Cheng Shao at 2025-03-05T04:49:54-05:00
ghc-experimental: make JSVal abstract in GHC.Wasm.Prim
This commit makes JSVal an abstract type in the export list of
GHC.Wasm.Prim. JSVal's internal representation is supposed to be a non
user facing implementation detail subject to change at any time. We
should only expose things that are newtypes of JSVal, not JSVal
itself.
- - - - -
4f342431 by Cheng Shao at 2025-03-05T04:49:54-05:00
wasm: make JSVal internal Weak# point to lifted JSVal
JSVal has an internal Weak# with the unlifted JSVal# object as key to
arrange its builtin finalization logic. The Weak# used to designate
Unit_closure as a dummy value; now this commit designates the lifted
JSVal closure as the Weak# value. This allows the implementation of
mkWeakJSVal which can be used to observe the liveliness of a JSVal and
attach a user-specified finalizer.
- - - - -
55af20e6 by Cheng Shao at 2025-03-05T04:49:54-05:00
ghc-experimental: add mkWeakJSVal
This commit adds a mkWeakJSVal function that can be used to set up a
Weak pointer with a JSVal key to observe the key's lifetime and
optionally attach a finalizer.
- - - - -
8273d7d1 by Matthew Pickering at 2025-03-05T04:50:30-05:00
simplifier: Zap Id unfoldings before constructing InScopeSet in simpleOptExpr
Care must be taken to remove unfoldings from `Var`s collected by exprFreeVars
before using them to construct an in-scope set hence `zapIdUnfolding` in `init_subst`.
Consider calling `simpleOptExpr` on an expression like
```
case x of (a,b) -> (x,a)
```
* One of those two occurrences of x has an unfolding (the one in (x,a), with
unfolding x = (a,b)) and the other does not. (Inside a case GHC adds
unfolding-info to the scrutinee's Id.)
* But exprFreeVars just builds a set, so it's a bit random which occurrence is collected.
* Then simpleOptExpr replaces each occurrence of x with the one in the in-scope set.
* Bad bad bad: then the x in case x of ... may be replaced with a version that has an unfolding.
Fixes #25790
- - - - -
07fe6d1d by Rodrigo Mesquita at 2025-03-05T04:51:07-05:00
docs: Fix ghci :doc documentation
Fixes #25799
- - - - -
a510b861 by Matthew Pickering at 2025-03-06T11:43:23+00:00
Add flag to control whether self-recompilation information is written to interface
This patch adds the flag -fwrite-if-self-recomp which controls whether
interface files contain the information necessary to answer the
question:
Do I need to recompile myself or is this current interface file
suitable?
Why? Most packages are only built once either by a distribution or cabal
and then placed into an immutable store, after which we will never ask
this question. Therefore we can derive two benefits from omitting this
information.
* Primary motivation: It vastly reduces the surface area for creating
non-deterministic interface files. See issue #10424 which motivated a
proper fix to that issue. Distributions have long contained versions
of GHC which just have broken self-recompilation checking (in order to
get deterministic interface files).
* Secondary motivation: This reduces the size of interface files
slightly.. the `mi_usages` field can be quite big but probably this
isn't such a great benefit.
* Third motivation: Conceptually clarity about which parts of an
interface file are used in order to **communicate** with subsequent
packages about the **interface** for a module. And which parts are
used to self-communicate during recompilation checking.
The main tracking issue is #22188 but fixes issues such as #10424 in a
proper way.
- - - - -
5b05c27b by Matthew Pickering at 2025-03-06T11:43:23+00:00
Disable self recomp in release flavour
The interface files that we distribute should not contain any
information which is used by the recompilation checking logic since
source file will never be compiled again.
I am not 100% sure this won't cause unexpected issues, there many be
downstream consumers which are incorrectly using the information from
interfaces, but this commit can be reverted if we detect issues.
- - - - -
1d4c9824 by Matthew Craven at 2025-03-06T18:11:59-05:00
Cmm: Add surface syntax for Word/Float bitcast ops
- - - - -
25c4a2a2 by Matthew Craven at 2025-03-06T18:11:59-05:00
Cmm: Add constant-folding for Word->Float bitcasts
- - - - -
30bdea67 by Matthew Craven at 2025-03-06T18:11:59-05:00
Add tests for #25771
- - - - -
44bf5fa1 by Matthew Pickering at 2025-03-07T13:48:18+00:00
iface: Store flags in interface files
When reporting the reason why a module is recompiled (using
`-dump-hi-diffs`), it is much more informative to inform the user about
which flag exactly has changed, rather than just an opaque reference to
a hash.
Now, when the user enables `-fwrite-if-self-recomp-flags`
there is a difference the precise part of the flags is
reported:
```
codegen flags changed:
before: [Opt_NoTypeableBinds, Opt_OmitYields]
after: [Opt_NoTypeableBinds, Opt_OmitYields, Opt_DictsStrict]
```
Fixes #25571
- - - - -
324222bd by Oleg Grenrus at 2025-03-08T08:50:18-05:00
Run fix-whitespace on compiler/
https://hackage.haskell.org/package/fix-whitespace
IMO this should be included into lint suite
- - - - -
1e53277a by sheaf at 2025-03-08T16:32:25-05:00
Allow defaulting of representational equalities
This commit generalises the defaulting of equality constraints that
was introduced in 663daf8d (with follow-up in 6863503c) to allow
the defaulting of *representational* equality constraints.
Now we default a representational equality
ty1 ~R# ty2
by unifying ty1 ~# ty2.
This allows the following defaulting to take place:
- Coercible alpha[tau] Int ==> alpha := Int
- Coercible (IO beta[tau]) (IO Char) ==> beta := Char
See Note [Defaulting representational equalities] in GHC.Tc.Solver.Default
for more details.
Fixes #21003
- - - - -
d6c40afc by Andreas Klebinger at 2025-03-08T16:33:02-05:00
Revert "Use `Infinite` in unique generation, and clean up some other partial uni patterns as well."
This reverts commit 643dd3d86968c527ba07ece9cc337728dbdfe2a0.
As described in #25817 this commit introduced a subtle bug in AArch64
code generation. So for the time being I will simply revert it
wholesale.
- - - - -
68310e11 by Andreas Klebinger at 2025-03-08T16:33:39-05:00
Properly describe acceptance window for stat tests.
The relative metric is already in %, so no need to multiply by 100.
- - - - -
cca68421 by Cheng Shao at 2025-03-08T22:04:42-05:00
wasm: do not use wasm type reflection in dyld
The wasm dynamic linker used to depend on v8's experimental wasm type
reflection support to generate stub functions when treating GOT.func
items that aren't exported by any loaded library yet. However, as we
work towards wasm ghci browser mode (#25399), we need to ensure the
wasm dyld logic is portable across browsers. So this commit removes
the usage of wasm type reflection in wasm dyld, and it shall only be
added many months later when this feature is widely available in
browsers.
- - - - -
75fcc5c9 by Cheng Shao at 2025-03-08T22:05:19-05:00
wasm: don't create a wasm global for dyld poison
There's a much more efficient way to convert an unsigned i32 to a
signed one. Thanks, o3-mini-high.
- - - - -
fd40eaa1 by Cheng Shao at 2025-03-08T22:05:19-05:00
wasm: revamp JSFFI internal implementation and documentation
This patch revamps the wasm backend's JSFFI internal implementation
and documentation:
- `JSValManager` logic to allocate a key is simplified to simple
bumping. According to experiments with all major browsers, the
internal `Map` would overflow the heap much earlier before we really
exhaust the 32-bit key space, so there's no point in the extra
complexity.
- `freeJSVal` is now idempotent and safe to call more than once. This
is achieved by attaching the `StablePtr#` to the `JSVal#` closure
and nullifying it when calling `freeJSVal`, so the same stable
pointer cannot be double freed.
- `mkWeakJSVal` no longer exposes the internal `Weak#` pointer and
always creates a new `Weak#` on the fly. Otherwise by finalizing
that `Weak#`, user could accidentally drop the `JSVal`, but
`mkWeakJSVal` is only supposed to create a `Weak` that observes the
`JSVal`'s liveliness without actually interfering it.
- `PromisePendingException` is no longer exported since it's never
meant to be caught by user code; it's a severe bug if it's actually
raised at runtime.
- Everything exported by user-facing `GHC.Wasm.Prim` now has proper
haddock documentation.
- Note [JSVal representation for wasm] has been updated to reflect the
new JSVal# memory layout.
- - - - -
cbae3708 by Ben Gamari at 2025-03-11T06:09:58-04:00
users guide: Fix typo
- - - - -
1951eb7a by Ben Gamari at 2025-03-11T06:10:35-04:00
testsuite: Don't count fragile passes as failures in JUnit output
As noted in #25806, the testsuite driver's JUnit output
previously considered passes of fragile tests to be failures. Fix this.
Closes #25806.
- - - - -
589f40b9 by Matthew Pickering at 2025-03-11T06:11:11-04:00
Use panic rather than error in expectJust
Otherwise, we would not get a callstack printed out when the exception
occurs.
Fixes #25829
- - - - -
d450e88e by sheaf at 2025-03-11T06:42:59-04:00
Solve Wanted quantified constraints from Givens
This commit ensures we directly solve Wanted quantified constraints from
matching inert Given quantified constraints,instead of going through the
trouble of emitting an implication constraint and processing that.
This is not just an optimisation; it makes our lives easier when
generating RULEs for specialisation.
See Note [Solving Wanted QCs from Given QCs] for details
Fixes #25758
- - - - -
48daaf53 by Ben Gamari at 2025-03-11T06:42:59-04:00
testsuite: Add testcase for #25577
- - - - -
d2ffb0ce by Ben Gamari at 2025-03-11T06:42:59-04:00
testsuite/ghc-api: Eliminate Makefile usage from various GHC API tests
These tests can be expressed perfectly well using the testsuite driver
itself.
- - - - -
2275b642 by Ben Gamari at 2025-03-11T06:42:59-04:00
rts/linker/MachO: Assert that GOT relocations have GOT entries
In #25577 we found that some GOT relocation types were not being given
relocation entries. Add assertions to catch this sort of failure in the
future.
- - - - -
8c96bcb4 by Ben Gamari at 2025-03-11T06:42:59-04:00
rts/linker/MachO: Account for internal GOT references in GOT construction
Previously we failed to give GOT slots to symbols which were referred to
by GOT relocations in the same module. This lead to #25577.
Fix this by explicitly traversing relocation lists and maintaining a
`needs_got` flag for each symbol.
Fixes #25577.
- - - - -
7b84c588 by Vladislav Zavialov at 2025-03-11T06:43:02-04:00
One list in ConPat (part of #25127)
This patch changes PrefixCon to use one list instead of two:
-data HsConDetails tyarg arg rec
- = PrefixCon [tyarg] [arg]
+data HsConDetails arg rec
+ = PrefixCon [arg]
| RecCon rec
| InfixCon arg arg
The [tyarg] list is now gone. To understand the effect of this change,
recall that there are three instantiations of HsConDetails:
1. type HsConPatDetails p =
HsConDetails (HsConPatTyArg (NoGhcTc p)) -- tyarg
(LPat p) -- arg
(HsRecFields p (LPat p)) -- rec
2. type HsConDeclH98Details pass =
HsConDetails Void -- tyarg
(HsScaled pass (LBangType pass)) -- arg
(XRec pass [LConDeclField pass]) -- rec
3. type HsPatSynDetails pass =
HsConDetails Void -- tyarg
(LIdP pass) -- arg
[RecordPatSynField pass] -- rec
In cases (2) and (3), tyarg was instantiated to Void, so the [tyarg]
list was always empty. Its removal is basically a no-op.
The interesting case is (1), which is used in ConPat to represent
pattern matching of the form (MkE @tp1 @tp2 p1 p2).
With this patch, its representation is changed as follows:
ConPat "MkE" [tp1, tp2] [p1, p2] -- old
ConPat "MkE" [InvisP tp1, InvisP tp2, p1, p2] -- new
The new mixed-list representation is consintent with lambdas, where
InvisP is already used to deal with \ @tp1 @tp2 p1 p2 -> body.
The immediate effect of the new representation is an improvement to
error messages. Consider the pattern (Con x @t y). Previously it
resulted in a parse error because @t could not occur after x. Now it is
reported as [GHC-14964]. Test case: TyAppPat_MisplacedApplication.
In the long term, this is intended as preparation for #18389 and #25127,
which would make (Con x @t y) potentially valid, e.g. if its type is
Con :: forall a -> forall b. (a, b) -> T
The TH AST is left unchanged for the moment to avoid breakage.
- - - - -
cce869ea by Vladislav Zavialov at 2025-03-11T06:43:02-04:00
Error message with EmptyCase and RequiredTypeArguments (#25004)
Fix a panic triggered by a combination of \case{} and forall t ->
ghci> let f :: forall (xs :: Type) -> (); f = \case {}
panic! (the 'impossible' happened)
GHC version 9.10.1:
Util: only
The new error message looks like this:
ghci> let f :: forall (xs :: Type) -> (); f = \case {}
<interactive>:5:41: error: [GHC-48010]
• Empty list of alternatives in \case expression
checked against a forall-type: forall xs -> ...
This is achieved as follows:
* A new data type, BadEmptyCaseReason, is now used to describe
why an empty case has been rejected. Used in TcRnEmptyCase.
* HsMatchContextRn is passed to tcMatches, so that the type checker
can attach the syntactic context to the error message.
* tcMatches now rejects type arguments if the list of alternatives is
empty. This is what fixes the bug.
- - - - -
37d8b50b by sheaf at 2025-03-11T06:43:06-04:00
user's guide: consolidate defaulting documentation
This commit adds a new section on defaulting, which consolidates various
parts of documentation surrounding defaulting into one central place.
It explains type class defaulting in detail, extensions to it with
OverloadedStrings, NamedDefaults and ExtendedDefaultRules, as well
as other defaulting mechanisms (e.g. kind-based defaulting such as
RuntimeRep defaulting, and defaulting of equalities).
- - - - -
0c9fd8d4 by sheaf at 2025-03-11T06:43:06-04:00
user's guide: flesh out XOverloadedStrings docs
This commit extends the documentation of the OverloadedStrings extension
with some usage information, in particular suggestions to:
- use default declarations, such as `default (Text)` or
`default IsString(Text)` (with the NamedDefaults extension),
- enable the ExtendedDefaultRules extension to relax the requirement
that a defaultable type variable must only appear in unary standard
classes
Fixes #23388
- - - - -
2df171d4 by sheaf at 2025-03-11T06:43:06-04:00
user's guide: NamedDefaults vs ExtendedDefaultRules
This commit clarifies the defaulting rules with NamedDefaults,
in particular in situations where a type variable appears in other
constraints than standard/unary constraints.
- - - - -
77df05d0 by Matthew Pickering at 2025-03-11T06:43:07-04:00
Take into account all flags when computing iface_hash
The "interface hash" should contain a hash of everything in the
interface file. We are not doing that yet but at least a start is to
include a hash of everything in `mi_self_recomp`, rather than just
`mi_src_hash` and `mi_usages`.
In particular, this fixes #25837, a bug where we should recompile a
`dyn_hi` file but fail to do so.
- - - - -
48b8f110 by Matthew Pickering at 2025-03-11T06:43:07-04:00
Pass -fPIC to dynamicToo001 test to avoid platform dependence issues
On darwin platforms, `-fPIC` is always enabled but on linux it is only
enabled in the dynamic flavour. This can cause a difference in
interface files (see #25836).
The purpose of this test isn't to test module A recompilation, so we
avoid this platform dependency by always passing `-fPIC`.
- - - - -
03c72f01 by Matthew Pickering at 2025-03-11T06:43:07-04:00
Remove mi_used_th field from interface files
In the distant past, recompilation checking was disabled for interfaces which used
TemplateHaskell, but for several years now recompilation checking has
been more fine-grained. This has rendered this field unused and
lingering in an interface file.
- - - - -
6bb0e261 by Matthew Pickering at 2025-03-11T06:43:07-04:00
Remove mi_hpc field from interface files
The `mi_hpc` field is not used for anything as far as I can discern so
there is no reason to record in the private interface of a module that
there are modules in the transitive closure which use `hpc`.
You can freely mix modules which use `-fhpc` and ones which don't.
Whether to recompile a module due to `-fhpc` being passed to the module
itself is determined in `fingerprintDynFlags`.
- - - - -
b6d5b091 by Simon Peyton Jones at 2025-03-11T22:39:23-04:00
We can't UNPACK multi-constructor GADTs
This MR fixes #25672
See Note [Unpacking GADTs and existentials] in GHC.Types.Id.Make
- - - - -
8eae151d by Teo Camarasu at 2025-03-11T22:40:00-04:00
template-haskell: Add explicit exports lists to all remaining modules
- - - - -
db621b58 by Teo Camarasu at 2025-03-11T22:40:00-04:00
template-haskell: fix haddocks
It seems that we need a direct dependency on ghc-internal, otherwise
Haddock cannot find our haddocks
The bug seems to be caused by Hadrian because if I rebuild with
cabal-install (without this extra dependency) then I get accurate
Haddocks.
Resolves #25705
- - - - -
64ea68d9 by Ben Gamari at 2025-03-12T07:11:51-04:00
mk-ghcup-metadata: Clean up and add type annotations
Getting this file right has historically been quite painful as it is a
dynamically-typed script running only late in the release pipeline.
- - - - -
b3f80b07 by Ben Gamari at 2025-03-12T07:12:27-04:00
rts: Drop imports of pthreads functions in cmm sources
These are no longer used. I noticed these while looking for uses of
__PIC__ in Cmm sources.
- - - - -
915a6781 by Matthew Pickering at 2025-03-13T01:46:41-04:00
interfaces: Ensure that forceModIface deeply forces a ModIface
A ModIface is the result of compilation that we keep for a long time in
memory. Therefore, it's very important to manage what we are going to
retain and remove any external references to things which we might have
captured compilation.
If storing your ModIface in memory uses too much space, then store
less things or make it use a more efficient representation.
In the past there have been many space leak bugs by not sufficiently
forcing a ModIface (#15111)
This patch adds all the missing NFData instances for all the places I
could find where we weren't deeply forcing the structure.
- - - - -
24d373a6 by Matthew Craven at 2025-03-13T01:47:18-04:00
Add interface-stability test for ghc-prim
- - - - -
0cb1db92 by sheaf at 2025-03-14T13:11:44-04:00
Don't report used duplicate record fields as unused
This commit fixes the bug reported in #24035 in which the import of a
duplicate record field could be erroneously reported as unused.
The issue is that an import of the form "import M (fld)" can import
several different 'Name's, and we should only report an error if ALL
of those 'Name's are unused, not if ANY are.
Note [Reporting unused imported duplicate record fields]
in GHC.Rename.Names explains the solution to this problem.
Fixes #24035
- - - - -
f1830d74 by Matthew Pickering at 2025-03-14T13:12:21-04:00
binary: Directly copy ShortByteString to buffer rather than go via ByteString
This avoids allocating an intermediate bytestring. I just noticed on a
profile that `putFS` was allocating, and it seemed strange to me why
since it should just copy the contents of the FastString into the
already allocated buffer. It turned out we were going indirectly via a
ByteString.
Fixes #25861
- - - - -
b15fca2b by Matthew Pickering at 2025-03-15T05:36:40-04:00
iface: Store logical parts of ModIface together
The ModIface structure is divided into several logical parts:
1. mi_mod_info: Basic module metadata (name, version, etc.)
2. mi_public: The public interface of the module (the ABI), which includes:
- Exports, declarations, fixities, warnings, annotations
- Class and type family instances
- Rewrite rules and COMPLETE pragmas
- Safe Haskell and package trust information
- ABI hashes for recompilation checking
4. mi_self_recomp: Information needed for self-recompilation checking
(see Note [Self recompilation information in interface files])
5. mi_simplified_core: Optional simplified Core for bytecode generation
(only present when -fwrite-if-simplified-core is enabled)
6. mi_docs: Optional documentation (only present when -haddock is enabled)
7. mi_top_env: Information about the top-level environment of the original source
8. mi_ext_fields: Additional fields for extensibility
This structure helps organize the interface data according to its purpose and usage
patterns. Different parts of the compiler use different fields. By separating them
logically in the interface we can arrange to only deserialize the fields that are needed.
This patch also enforces the invariant that the fields of ModIface are
lazy. If you are keeping a ModIface on disk, then force it using
`forceModIface`. Otherwise, when the `ModIface` is read from disk, only
the parts which are needed from the interface will be deserialised.
In a follow-up patch I will tackle follow-up issues:
* Recompilation checking doesn't take into account exported named defaults (#25855)
* Recompilation checking does not take into account COMPLETE pragmas (#25854)
* mi_deps_ field in an interface is confused about whether the
information is for self-recompilation checking or part of the ABI
(#25844)
Fixes #25845
-------------------------
Metric Decrease:
MultiLayerModulesDefsGhciWithCore
-------------------------
- - - - -
c758cb71 by Ben Gamari at 2025-03-15T05:37:17-04:00
configure: Fix incorrect SettingsLlvmAsFlags value
Previously this was set to `LlvmAsCmd` rather than `LlvmAsFlags`,
resulting in #25856.
- - - - -
cfaaca14 by sheaf at 2025-03-18T20:05:03-04:00
Fix buglet in isEmptyWorkList
There was a missing case in GHC.Tc.Solver.InertSet.isEmptyWorkList; it
mistakenly ignored the 'wl_rw_eqs' field. This commit simply fixes that.
No test case.
- - - - -
9f9fe0b3 by sheaf at 2025-03-18T20:05:03-04:00
Add mapMaybeTM method to TrieMap class
This commit adds a new method to the TrieMap class, mapMaybeTM, and
adds implementations to all the instances.
mapMaybeTM is useful when filtering containers that contain other
containers.
- - - - -
393531ff by Simon Peyton Jones at 2025-03-18T20:05:03-04:00
Specialising expressions -- at last
This MR addresses #24359, which implements the GHC proposal 493 on SPECIALISE pragmas.
* The old code path (using SpecSig and SpecPrag) still exists.
* The new code path (using SpecSigE and SpecPragE) runs alongside it.
* All SPECIALISE pragmas are routed through the new code path, except
if you give multiple type sigs, when the old code path is still used.
* Main documentation: Note [Handling new-form SPECIALISE pragmas] in
GHC.Tc.Gen.Sig`
Thanks to @sheaf for helping with this MR.
The Big Thing is to introduce
{-# SPECIALISE forall x. f @Int x True #-}
where you can give type arguments and value argument to specialise; and
you can quantify them with forall, just as in Rules.
I thought it was going to be pretty simple, but it was a Long, Long Saga.
Highlights
* Overview Note [Handling new-form SPECIALISE pragmas] in GHC.Tc.Gen.Sig
- New data constructor `SpecSigE` in data type `L.H.S.Binds.Sig`
- New data construtor `SpecPragE` in data type `GHC.Hs.Binds.TcSpecPrag`
- Renamer: uses `checkSpecESigShape` to decide which function to assocate the
SPECIALISE pragma with
- Some of the action is in `GHC.Tc.Gen.Sig.tcSpecPrag`
- The rest is in `GHC.HsToCore.Binds.dsSpec`
* We use a new TcS mode, TcSFullySolve, when simplifying the Wanteds
that arise from the specialise expression. The mechanism is explained
in Note [TcSFullySolve] in GHC.Tc.Solver.Monad. The reason why we need
to do this is explained in Note [Fully solving constraints for specialisation]
in GHC.Tc.Gen.Sig.
* All of GHC.Tc.Gen.Rule is moved into GHC.Tc.Gen.Sig, because the code is
very closely related.
* The forall'd binders for SPECIALISE are the same as those for a RULE, so I
refactored, introducing data type `L.H.S.Binds.RuleBndrs`, with functions
to rename, zonk, typecheck it. I refactored this data type a bit; nicer now.
* On the LHS of RULES, or SPECIALISE, we want to disable the tricky mechanims
described in Note [Desugaring non-canonical evidence] in GHC.HsToCore.Expr.
Previously it wasn't fully disabled (just set to the empty set), and that
didn't quite work in the new regime.
* There are knock-on changes to Template Haskell.
* For the LHS of a RULE and a SPECIALISE expression, I wanted to simplify
it /without/ inlining the let-bindings for evidence variables. I added
a flag `so_inline` to the SimpleOpt optimiser to support this. The
entry point is `GHC.Core.SimpleOpt.simpleOptExprNoInline`
* Since forever we have had a hack for type variables on the LHS of
RULES. I took the opportunity to tidy this up. The main action is
in the zonker. See GHC.Tc.Zonk.Type Note [Free tyvars on rule LHS],
and especially data construtor `SkolemiseFlexi`
in data type `GHC.Tc.Zonk.Env.ZonkFlexi`
* Move `scopedSort` from GHC.Core.TyCo.FVs to GHC.Core.Predicate
Reason: it now works for Ids as well, and I wanted to use isEvVar,
which is defined in GHC.Core.Predicate
Avoiding module loops meant that instead of exporting GHC.Core.TyCo.Tidy
from GHC.Core.Type, modules now import the former directly.
I also took the opportunity to remove unused exports
from GHC.Core.Type.hs-boot
* Flag stuff:
- Add flag `-Wdeprecated-pragmas` and use it to control the warning when
using old-style SPECIALISE pragmas with multiple type ascriptions,
- Add flag `-Wuseless-specialisations` and use it to control the warning emitted
when GHC determines that a SPECIALISE pragma would have no effect. Don't
want if the SPECIALISE is SPECIALISE INLINE (#4444)
In response to #25389, we continue to generate these seemingly code for these
seemingly useless SPECIALISE pragmas
- Adds deprecations to Template Haskell `pragSpecD` and `pracSpecInlD`,
* Split up old-style SPECIALISE pragmas in GHC.Internal.Float,
GHC.Internal.Numeric, GHC.Internal.Real
* Remove useless SPECIALISE pragmas in Data.Array (updating the array submodule)
Smaller things:
- Update the Users Guide
- Add mention of the changes to the 9.14 release notes as well as
the Template Haskell changelog,
- - - - -
1884dd1a by Simon Peyton Jones at 2025-03-18T20:05:03-04:00
Add -Wrule-lhs-equalities warning
This commit adds a new warning, controlled by the warning flag,
-Wrule-lhs-equalities, which is emitted when the LHS of a RULE gives
rise to equality constraints that previous GHC versions would have
quantified over.
GHC instead discards such RULES, as GHC was never able to generate
a rule template that would ever fire; it's better to be explicit about
the fact that the RULE doesn't work.
- - - - -
b00b3ef0 by Ben Gamari at 2025-03-18T20:05:41-04:00
compiler: Add export list to GHC.SysTools.Process
This also revealed that `readProcessEnvWithExitCode` and its local
helpers were dead code.
- - - - -
25850b22 by ARATA Mizuki at 2025-03-18T20:06:25-04:00
Fix code generation for SSE vector operations
The new implementation generates correct code
even if the registers overlap.
Closes #25859
- - - - -
e576468c by Andreas Klebinger at 2025-03-18T20:07:02-04:00
Bump nofib submodule.
Fixes #25867. (Ben-raytrace being broken by library changes)
- - - - -
443fc8b1 by Sjoerd Visscher at 2025-03-19T12:01:04-04:00
Multiplicity annotation on records
Needing to store multiplicity annotations on records triggered a refactoring of AST of data declarations:
Moved HsBangTy and HsRecTy from HsType to HsTypeGhcPsExt, the extension of HsType during parsing, since they are only needed during parsing.
New HsConDeclField that stores all source data shared by all constructor declaration fields: unpackedness, strictness, multiplicity, documentation and the type of the field.
Merged HsMultAnn and HsArrowOf, so all multiplicity annotations share the same data type.
HsBang was no longer needed as a separate type, and was inlined into HsSrcBang.
- - - - -
313cf271 by Ben Gamari at 2025-03-19T12:01:43-04:00
gitlab-ci: Drop CentOS 7 binary distributions
CentOS 7 is EoL and moreover we cannot even build images for it.
See #25061.
- - - - -
5b94f99f by Ben Gamari at 2025-03-19T12:02:21-04:00
rts: Ensure that WinIO flag is set when --io-manager=auto
As noted in #25838, previously `selectIOManager` failed to set
`rts_IOManagerIsWin32Native` in its `IO_MNGR_FLAG_AUTO`. This meant
that the MIO path was taken when WinIO was supposedly selected,
resulting in chaos.
Fixes #25838.
- - - - -
1a3f1131 by Peng Fan at 2025-03-19T12:03:10-04:00
Pass the mcmodel=medium parameter to CC via GHC
Ensure that GHC-driver builds default to mcmodel=medium, so that GHC
passes this default parameter to CC without having to add it to the
compiled project.
Commit e70d41406b5d5638b42c4d8222cd03e76bbfeb86 does not ensure that all
GHC-built object files have a default model of medium, and will raise an
R_LARCH_B26 overflow error.
- - - - -
27cf7361 by Matthew Craven at 2025-03-19T12:03:48-04:00
Add interface-stability test for ghc-bignum
As with ghc-prim, it makes sense to have some protection against
accidental interface changes to this package caused by changes
in ghc-internal.
- - - - -
25d46547 by Matthew Craven at 2025-03-19T12:03:48-04:00
Add README reference for the interface-stability tests
- - - - -
5d65393e by Simon Peyton Jones at 2025-03-20T05:41:24-04:00
Remove the Core flattener
This big MR entirely removes the "flattener" that took a type and
replaced each type-family application with a fresh type variable.
The flattener had its origin in the paper
Injective type families for Haskell
But (a) #25657 showed that flattening doesn't really work.
(b) since we wrote the paper we have introduced the so-called
"fine-grained" unifier GHC.Core.Unify, which can return
* SurelyApart
* Unifiable subst
* MaybeApart subst
where the MaybeApart says that the two types are not unifiable by a
substitution, but could (perhaps) be unified "later" after some type
family reductions. This turns out to subsume flattening.
This MR does a major refactor of GHC.Core.Unify to make it capable of
subsuming flattening. The main payload is described in
Note [Apartness and type families]
and its many wrinkles.
The key (non-refactoring) implementation change is to add `um_fam_env`
to the `UMState` in the unification monad.
Careful review with Richard revealed various bugs in the treament of
`kco`, the kind coercion carried around by the unifier, so that is
substantially fixed too: see Note [Kind coercions in Unify].
Compile-time performance is improved by 0.1% with a few improvements over
1% and one worsening by 1.3% namely T9872a. (I have not investigated the
latter.)
Metric Decrease:
T9872b
T9872c
TcPlugin_RewritePerf
Metric Increase:
T9872a
- - - - -
9003ef0a by sheaf at 2025-03-20T05:42:08-04:00
Remove SDoc from UnknownSubordinate/MissingBinding
This commit replaces unstructured SDoc arguments in error message constructors
with uses of the following two datatypes:
- SigLike: for different kinds of signatures (e.g. standalone kind signatures,
fixity signatures, COMPLETE pragmas, etc)
- Subordinate: for class methods, associated types, and record fields
The following error message constructors now no longer have any SDocs in them:
- TcRnIllegalBuiltinSyntax: SDoc -> SigLike
- MissingBinding: SDoc -> SigLike
- UnknownSubordinate: SDoc -> (Name, Subordinate)
- SuggestMoveToDeclarationSite: SDoc -> SigLike
- - - - -
4329f3b6 by sheaf at 2025-03-20T05:42:08-04:00
Remove SDocs from HsDocContext
This commit removes the remaining SDocs from the HsDocContext data type.
It adds the following constructors:
ClassInstanceCtx -- Class instances
ClassMethodSigCtx -- Class method signatures
SpecialiseSigCtx -- SPECIALISE pragmas
PatSynSigCtx -- Pattern synonym signatures
We now report a bit more information for errors while renaming class instances,
which slightly improves renamer-emitted error messages.
- - - - -
75c29aa1 by sheaf at 2025-03-20T05:42:08-04:00
Reject instance with non-class head in renamer
This commit modifies rnClsInstDecl so that, when renaming, we reject a class
instance declaration in which the head is not a class. Before this change, it
would get rejected in the type-checker, but that meant that the renamer could
emit unhelpful error messages, e.g.:
data Foo m a
instance Foo m where
fmap _ x = case x of
would rather unhelpfully say:
‘fmap’ is not a (visible) method of class ‘Foo’
when of course 'Foo' is not even a class. We now reject the above program
with the following error message:
Illegal instance for data type ‘Foo’.
Instance heads must be of the form
C ty_1 ... ty_n
where ‘C’ is a class.
Fixes #22688
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a8f543a9 by Cheng Shao at 2025-03-20T18:47:19-04:00
testsuite: mark T7919 as fragile on i386 as well
T7919 may also fail i386 CI jobs with test timeout.
- - - - -
256ac29c by sheaf at 2025-03-20T18:48:07-04:00
Don't cache solved [W] HasCallStack constraints
This commit ensures we do not add solved Wanted constraints that mention
HasCallStack or HasExceptionContext constraints to the set of solved
Wanted dictionary constraints: caching them is invalid, because re-using
such cached dictionaries means using an old call-stack instead of
constructing a new one, as was reported in #25529.
Fixes #25529.
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47646ce2 by Andrew Lelechenko at 2025-03-20T18:48:43-04:00
Improve haddock-visible documentation for GHC.Driver.Flags
- - - - -
2e4e15ed by Sylvain Henry at 2025-03-21T17:49:36-04:00
Document -fnum-constant-folding (#25862)
- - - - -
044a6e08 by sheaf at 2025-03-21T17:50:24-04:00
LLVM: fix typo in padLiveArgs
This commit fixes a serious bug in the padLiveArgs function, which
was incorrectly computing too many padding registers. This caused
segfaults, e.g. in the UnboxedTuples test.
Fixes #25770
Fixes #25773
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1745c749 by Teo Camarasu at 2025-03-22T18:42:37-04:00
template-haskell: remove Language.Haskell.TH.Lib.Internal
This module is purely used for the implementation of TH quote
desugarring.
Historically this needed to be exposed from `template-haskell`, since
that's the package that the desugarred expressions referenced but since
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/12479, this is no
longer the case.
Now these identifiers are in `ghc-internal`.
Note that this module has carried the following warning for a long time:
> This is not a part of the public API, and as such, there are no API guarantees for this
module from version to version.
Resolves #24766
- - - - -
3bc507db by Alan Zimmerman at 2025-03-22T18:43:13-04:00
EPA: Fix exact printing of SPECIALISE pragma
This commit fixes two minor issues with exactprinting of the
SPECIALISE pragma after !12319 landed
- The span for the RHS did not include the optional signature type
- The `::` was printed twice when the legacy path was used
Closes #25885
- - - - -
bdf93da8 by sheaf at 2025-03-24T11:25:12+01:00
Renamer: improve handling of export children
This commit refactors the 'childGREPriority' function which is used when
renaming subordinate items in export lists and class declarations.
Instead of having a complicated LookupChild parameter, we now simply pass the
GREInfo of the parent, which allows us to decide what is a valid child:
- classes can have children that are in the type constructor namespace,
- promoted data constructors should be treated the same as normal data
constructors.
Fixes #24027
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1dbc7846 by Matthew Pickering at 2025-03-24T15:35:17-04:00
Revert "mk-ghcup-metadata: Clean up and add type annotations"
This reverts commit 64ea68d9a206ec4db5020b0a3fc563199ab18be3.
See #25889
- - - - -
6941c825 by doyougnu at 2025-03-25T10:05:58-04:00
base: construct compat RTSFlags
-- see CLC #289
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730e6f77 by doyougnu at 2025-03-25T10:06:02-04:00
base: construct compat GHC.Stats
-- see CLC #289
- - - - -
cd9e6605 by Ben Gamari at 2025-03-25T17:59:52-04:00
rel_eng/upload: Clarify usage directions
Previously it was not made clear that the directory name is significant.
- - - - -
7d18c19b by Cheng Shao at 2025-03-25T22:00:56+00:00
ghci: make the Pipe type opaque
This commit makes the Pipe type in ghci opaque, and introduce the
mkPipeFromHandles constructor for creating a Pipe from a pair of
Handles. Pipe is now just a pair of receiver/sender continuations
under the hood. This allows a Pipe to be potentially backed by other
IPC mechanisms (e.g. WebSockets) which is essential for wasm ghci
browser mode.
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a2103fd2 by Cheng Shao at 2025-03-25T22:00:56+00:00
ghci: use improved Pipe logic for wasm iserv
This commit makes wasm iserv take advantage of the Pipe refactoring by
passing binary receiver/sender js callbacks from the dyld script. This
paves the way for piping the binary messages through WebSockets in
order to run wasm iserv in the browser, but more importantly, it
allows us to get rid of a horrible hack in the dyld script: we no
longer have to fake magical wasi file descriptors that are backed by
nodejs blocking I/O! The legacy hack was due to these facts:
- iserv only supported exchanging binary messages via handles backed
by file descriptors
- In wasi you can't access host file descriptors passed by host ghc
- The nodejs wasi implementation only allows mapping host directories
into the wasi vfs, not host file descriptors
- Named pipes with file paths (mkfifo) doesn't work well with nodejs
wasi implementation, causes spurious testsuite failures on macos
But starting from this point, we can fully take advantage of
non-blocking I/O on the js side.
- - - - -
fa2fbd2b by Cheng Shao at 2025-03-25T22:00:56+00:00
ghci: fix ^C handling for wasm iserv
This commit fixes ^C handling for wasm iserv. Previously we didn't
handle it at all, so ^C would kill the node process and host ghc would
then crash as well. But native ghc with external interpreter can
handle ^C just fine and wasm should be no different. Hence the fix:
wasm iserv exports its signal handler as a js callback to be handled
by the dyld script. Also see added note for details.
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efcebed6 by Cheng Shao at 2025-03-25T22:00:56+00:00
wasm: fix post-link.mjs for browser
The wasm ghci browser mode needs to run dyld.mjs in the browser which
imports post-link.mjs. This script makes post-link.mjs runnable in the
browser by deferring node-specific module imports to their actual use
sites.
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27bb73c6 by Cheng Shao at 2025-03-25T22:00:56+00:00
wasm: use console.assert in dyld script
This commit uses console.assert() instead of node-specific strict
assert in the dyld script, in order to make it runnable in the
browser. console.assert() only warns and doesn't crash upon assertion
failure, but this is fine; we can always trivially define a strict
assert function shall it be necessary when debugging, and there hasn't
been such an assertion failure seen in the wild for long enough.
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929df0ba by Cheng Shao at 2025-03-25T22:00:56+00:00
wasm: asyncify the dylink.0 custom section parser
This commit refactors the simple binary parser in the dyld script in
charge of parsing the dylink.0 custom section. Previously the parser
was synchronous and operated on the entire input buffer; this was
simple and easy and worked well enough when the input wasm modules are
instantly read from local filesystem.
However, when running dyld in the browser, the wasm modules are
transferred via fetch() requests. The host ghc and the browser might
not be on the same machine, so slow network uplink does need to be
considered. We only need to parse dylink.0 custom section to extract
dependency info, and dylink.0 is the very first custom section in the
wasm shared library binary payload, so the parsing process should not
require fetch() to complete and should return the parsing result asap.
Hence the refactorings in this commit: asyncify the parser, make it
only consume as many bytes as needed by invoking an async consumer
callback. The input is a readable stream from the fetch() response;
once the response is available, the async wasm compilation can start
in the background, and dylink.0 parsing shall end asap which results
in more wasm shared libraries to be loaded earlier. Profit.
- - - - -
9a697181 by Cheng Shao at 2025-03-25T22:00:56+00:00
wasm: fix dyld setImmediate usage in browser
The wasm dyld script used to only run in node and directly uses
setImmediate in globalThis. In case of browsers, it needs to import
setImmediate from the prelude, hence this commit.
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d9b71e82 by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: fix dyld downsweep filepath handling in browser
The wasm dyld downsweep logic used to rely on nodejs path module to
handle filepaths. That's not available in browsers, so this commit
implements poor man's filepath handling in js, which is not elegant
for sure but works for both nodejs and the browser.
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7003a399 by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: isolate nodejs-specific logic with the isNode flag in dyld
As we move towards supporting running the dyld script in the browser,
this commit implements the isNode module-level binding which is true
if dyld is running in nodejs. The nodejs-specific bits are gated under
isNode.
For the browser case, this commit introduces @bjorn3/browser_wasi_shim
as the wasi implementation; we already use it in quite a few projects
and it simply works.
- - - - -
22ba2a78 by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: isolate dyld side effects that might require IPC
This commit spins out a DyLDHost class from DyLD that handles side
effects that must be run in the same host environment that runs
wasm32-wasi-ghc. When the dyld script runs in the browser, it'll need
to do IPC to find libraries, fetch wasm library, etc, and the other
side of dyld that runs on nodejs would simply expose the DyLDHost
methods as endpoints for WebSockets/HTTP.
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e93fc33d by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: implement wasm ghci browser mode
This commit implements the rest of dyld logic that delivers the ghci
browser mode:
- The dyld script can now fully run in the browser. It communicates
back with dyld-on-nodejs via WebSockets and also plain HTTP 1.1
requests.
- The host dyld starts a server and acts as a broker between the GHC
process and the browser side. GHC doesn't need to know anything
about the browser mode; no driver flags need to be added and no
recompilation needs to happen, the GHC driver continues to use the
original iserv binary messages protocol.
- The dyld broker doesn't need to parse any message between the
browser dyld and GHC; it merely sets up WebSockets connections to
redirect these messages as well as ^C signals.
- Plain HTTP 1.1 is used for IPC requests (e.g. downloading a wasm
module).
- The dyld broker serves a main.js script that bootstraps iserv in the
browser, and a main.html empty page playground for testing. CORS is
enabled so it could be possible to inject iserv into other websites
and use ghci to play with them.
- All the RPC logic is opaque to the DyLD class, the majority of the
wasm dynamic linker code is already portable and runs fine in
firefox/chrome/webkit.
Closes #25399.
- - - - -
fc576798 by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: add puppeteer/playwright support for ghci browser mode
This commit adds support for using puppeteer/playwright for
automatically launching a headless browser that backs the ghci browser
mode. This is useful for testing the ghci browser mode as a part of
GHC testsuite, and it's also convenient for local development since
the step to start iserv can be automated away.
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ad7e271d by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: support wasi console redirect for the ghci browser mode
This commit adds optional support for redirecting wasi console
stdout/stderr back to the host when running wasm ghci browser mode. By
default, the wasi console outputs are only available under F12
devtools console, but in case of testing against a mobile browser, the
devtools console may not be readily available, and it would be more
convenient to at least get wasi console output on the host side.
The redirection logic is simple, just adding another two WebSockets
connections that pump the line-buffered textual messages back to
host.
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731217ce by Cheng Shao at 2025-03-25T22:00:57+00:00
wasm: add brotli compression for ghci browser mode
This commit adds brotli compression for wasm shared libraries for ghci
browser mode. With BROTLI_MIN_QUALITY, the overhead is negligible, and
it helps reducing amount of transferred data when the browser connects
to the server over a slow connection.
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ac70e643 by Cheng Shao at 2025-03-26T13:37:19+00:00
testsuite: add browser001 test for wasm ghci browser mode
This commit adds support for testing the wasm ghci browser mode in the
testsuite, as well as a simple first test case browser001 that makes
use of TH, JSFFI and browser-specific DOM API. See added note and
comments for details.
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6ef5c0d2 by Cheng Shao at 2025-03-26T13:37:24+00:00
docs: add wasm ghci subsection in user manual
This commit updates the user manual to add wasm ghci subsection.
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37381bcf by Cheng Shao at 2025-03-26T13:37:24+00:00
docs: update Note [The Wasm Dynamic Linker]
This commit updates Note [The Wasm Dynamic Linker] to reflect recent
developments, in particular the wasm ghci browser mode.
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4b5a0f61 by Cheng Shao at 2025-03-26T13:37:24+00:00
ci: bump DOCKER_REV and test wasm ghci browser mode
This commit bumps the ci-images revision for updated wasm toolchain,
and adds the launch options required to test wasm ghci browser mode.
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c6a3bc8f by Cheng Shao at 2025-03-26T13:37:24+00:00
driver: implement wasm ghci browser mode flags
This commit implements GHC driver flags that enable the wasm ghci
browser mode.
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f75e823e by Cheng Shao at 2025-03-26T18:01:54-04:00
rts: add hs_try_putmvar_with_value to RTS API
This commit adds hs_try_putmvar_with_value to rts. It allows more
flexibility than hs_try_putmvar by taking an additional value argument
as a closure to be put into the MVar. This function is used & tested
by the wasm backend runtime, though it makes sense to expose it as a
public facing RTS API function as well.
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9cd9f347 by Cheng Shao at 2025-03-26T18:01:54-04:00
wasm: use MVar as JSFFI import blocking mechanism
Previously, when blocking on a JSFFI import, we push a custom
stg_jsffi_block stack frame and arrange the `promise.then` callback to
write to that stack frame. It turns out we can simply use the good old
MVar to implement the blocking logic, with a few benefits:
- Less maintenance burden. We can drop the stg_jsffi_block related Cmm
code without loss of functionality.
- It interacts better with existing async exception mechanism. throwTo
would properly block the caller if the target thread is masking
async exceptions.
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da34f0aa by Cheng Shao at 2025-03-26T18:01:54-04:00
wasm: properly pin the raiseJSException closure
We used to use keepAlive# to pin the raiseJSException closure when
blocking on a JSFFI import thunk, since it can potentially be used by
RTS. But raiseJSException may be used in other places as well (e.g.
the promise.throwTo logic), and it's better to simply unconditionally
pin it in the JSFFI initialization logic.
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dc904bfd by Cheng Shao at 2025-03-26T18:01:54-04:00
wasm: implement promise.throwTo() for async JSFFI exports
This commit implements promise.throwTo() for wasm backend JSFFI
exports. This allows the JavaScript side to interrupt Haskell
computation by raising an async exception. See subsequent docs/test
commits for more details.
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7f80455e by Cheng Shao at 2025-03-26T18:01:55-04:00
testsuite: add test for wasm promise.throwTo() logic
This commit adds a test case to test the wasm backend
promise.throwTo() logic.
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afdd3fe7 by Cheng Shao at 2025-03-26T18:01:55-04:00
docs: document the wasm backend promise.throwTo() feature
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65dc65dc by sheaf at 2025-03-26T18:02:43-04:00
Refactor CtEvidence into Given/Wanted
This commit is a simple refactoring which splits up the CtEvidence,
giving each constructor its own datatype:
data CtEvidence
= CtGiven GivenCtEvidence
| CtWanted WantedCtEvidence
data GivenCtEvidence =
GivenCt
{ ctev_pred :: TcPredType
, ctev_evar :: EvVar
, ctev_loc :: CtLoc }
data WantedCtEvidence =
WantedCt
{ ctev_pred :: TcPredType
, ctev_dest :: TcEvDest
, ctev_loc :: CtLoc
, ctev_rewriters :: RewriterSet }
This enables a few minor simplifications in the code, notably removing
a panic from GHC.Tc.Solver.Solve.solveWantedForAll_implic.
Fixes #25848
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ada04031 by sheaf at 2025-03-26T18:03:27-04:00
Export lists: same prio for NoParent & RightParent
This commit ensures that, when we are renaming children in an export
list item such as
module M ( P(A,B,C) )
we consider children with NoParent to have the same priority as children
which have the correct parent (P in this case). This is because we
should **not** prioritise a data constructor (with the right parent)
over a pattern synonym we are bundling (which, before bundling, has
no parent).
Fixes #25892
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721628a0 by Adriaan Leijnse at 2025-03-27T09:10:10-04:00
TTG: Replace HsUnboundVar with HsHole
Context:
The HsUnboundVar constructor in Language.Haskell.Syntax.Expr contained a
RdrName, which stood in the way of the work towards a dedicated
haskell-syntax library. The constructor was overloaded for unbound
variables, anonymous and named holes, and parse errors.
This commit:
Replaces HsUnboundVar with HsHole. In the surface syntax HsHole only
represents an anonymous expression hole ("_"). It is extended with the
XHole type family.
In the concrete GHC implementation of the language on the other hand,
HsHole is used for "any thing which is not necessarily a valid or fully
defined program fragment, but for which a type can be derived". This use
is similar to how HsUnboundVar was used, but the parse error case is now
made explicit with a ParseError case for XHole. This is in anticipation
of future work on a fault tolerant compilation pipeline.
- - - - -
dbd852f5 by Ben Gamari at 2025-03-27T09:10:48-04:00
rel_eng: Finish removal of CentOS jobs
Remove centos7 from release fetch and ghcup metadata generation scripts.
Closes #25893.
- - - - -
0e0231e7 by Matthew Pickering at 2025-03-28T18:36:33-04:00
hadrian: Make hash_unit_ids into a flavour transformer (and enable for release flavour)
The primary reason for this change is to make the `release` flavour
enable `--hash-unit-ids` by default without any further user intervention.
* Packagers don't have to be aware of this special flag they should be
using.
* release builds on CI are uniformly testing with hashes (see !13418)
Fixes #25379
- - - - -
9fc54c12 by Rodrigo Mesquita at 2025-03-28T18:37:10-04:00
driver: Move DynFlags consistency fixes off Main
These consistency fixes found in Main.hs are required for the proper
functioning of the compiler and should live together with all remaining
fixes in `makeDynFlagsConsistent`.
This is especially relevant to GHC applications that shouldn't have to
copy/fix themselves possibly inconsistent DynFlags.
Additionally, outputs information when verbosity is high about these
consistency fixes that were previously quiet, adds information to the
Note on consistency of DynFlags, and improves one of the fixes that
incorrectly used `dynNow`.
- - - - -
2fdd0be9 by sheaf at 2025-03-28T18:37:53-04:00
Remove GhcHint from TcRnNotInScope constructor
This is a tiny refactoring which:
- removes GhcHint/ImportError fields from some constructors of
TcRnMessage, using the TcRnMessageDetailed mechanism instead to
report this informaiton:
- removes the GhcHint and ImportErrors fields from TcRnNotInScope
- removes the GhcHint field from TcRnTermNameInType
- ensures that we only include these hints and import errors when the
-fhelpful-errors flag is turned on
Fixes #25874
- - - - -
9e5cd064 by ARATA Mizuki at 2025-03-31T14:53:34-04:00
Better support for SSE3 and SSE4.1
In particular:
* Pass appropriate attributes to LLVM
* Define preprocessor macros for them
- - - - -
c2c7dd51 by ARATA Mizuki at 2025-03-31T14:53:34-04:00
x86: Add support for SSSE3
This commit adds the `-mssse3` flag, which controls usage of SSSE3 instructions in x86 code generation.
- - - - -
d7c62580 by ARATA Mizuki at 2025-03-31T14:53:34-04:00
x86 NCG SIMD: Implement 128-bit integer vector arithmetics
This commit implements the following operations on integer vectors:
* negateIntNXM#
* plus{Int,Word}NXM#
* minus{Int,Word}NXM#
* times{Int,Word}NXM#
* quot{Int,Word}NXM#
* rem{Int,Word}NXM#
* min{Int,Word}NXM#
* max{Int,Word}NXM#
where (N,M) is one of (8,16), (16,8), (32,4), or (64,2).
Closes #25643
- - - - -
f5ea4e7e by ARATA Mizuki at 2025-03-31T14:53:34-04:00
x86 NCG SIMD: Implement 128-bit integer vector shuffle
This commit implements the following operations:
* shuffle{Int,Word}8X16#
* shuffle{Int,Word}16X8#
* shuffle{Int,Word}32X4#
* shuffle{Int,Word}64X2#
See #25643
- - - - -
5eeb6645 by Simon Peyton Jones at 2025-03-31T14:54:16-04:00
Re-jig the way that the Simplifier tries RULES
As #25170 showed, if a new RULE appears, it could change the simplifier's
behaviour a bit, even if it never fires; and that messes up deterministic
compilation. (This was particularly nasty if the rule wasn't even transitively
below the module being compiled.)
This MR rejigs the use of `tryRules` so that behaviour does not change
when a new, unrelated RULE is added. It's described in
* Note [When to apply rewrite rules]
* Note [tryRules: plan (BEFORE)]
* Note [tryRules: plan (AFTER)]
The main change is in the refactored version of
* simplOutId
* rebuildCall
The little state machine that was embedded in ArgInfo is gone.
As I wandered around the Simplifier I also found opportunities for
some loosely-related refactoring:
* In several places, the /substitution/ in the SimpleEnv is empty;
all we care about is the in-scope set and the flags. So
- I made a synonym `SimplEnvIS` that embodies that invariant,
- used it in a number of type signatures (notably `rebuild`)
- added some assertion checks (via `checkSimlEnvIS`)
* I moved the hanlding of `runRW` out of `rebuildCall` (where we
would have to test repeatedly) and into the new `simplOutId`, which
fires up `rebuildCall`. Now it is only tested once.
-------------------------
Metric Decrease:
T9020
T9961
-------------------------
- - - - -
f534474a by sheaf at 2025-03-31T14:54:59-04:00
Add comment: no qualified Names in the LocalRdrEnv
This commit adds a reference to section 5.5.1 of the Haskell 2010 report,
to explain that qualified names can't occur in the LocalRdrEnv.
Fixes #25875
- - - - -
d5ea80c6 by Patrick at 2025-03-31T14:55:42-04:00
Fix deadlock/loop in interface rehydration (#25858)
In #25858, GHC hangs when processing modules with class defaults due to a
circular dependency in the interface rehydration process. The deadlock/loop
occurred when eager class defaults rehydration accessed not-yet-complete module details.
To fix the immediate deadlock/loop.
`tcIfaceDefaults` is refactored, we use the class name directly from the iface
and use `forM` for lazy loading the class, which algins with the handling of other fields
of ModDetails. This laziness ensure rehydration waits for HomePackageTable (HPT) to
be updated and prevent premature evaluation of ModDetails inside `fixIO``.
As suggested by Matthew, class defaults importing is also refactored
to align with the compiler's established interface loading conventions.
- add class defaults field to ExternalPackageState (EPS).
- rehydrate and store class defaults in EPS at `loadInterface`.
- Instead of using `tcIfaceDefaults` in `tcRnImports`, we add and use
`tcGetClsDefaults` to read defaults directly from HPT or EPS
when importing modules.
Tests:
- T25858, T25858v1-2: Test class hydration in defaults
- T25858v3-4: Test type list hydration in defaults
New Note [Tricky rehydrating IfaceDefaults loop] is added.
Thanks to @sheaf (Sam), @mpickering (Matthew), and @simonpj (Simon) for their
valuable input and analysis.
Fixes #25858.
- - - - -
2d419d8d by Matthew Pickering at 2025-04-02T16:12:36-04:00
Use unsafePerformIO in definition of computeFingerprint
computeFingerprint is morally a pure function, which is implemented by
mutating a buffer. Using unsafePerformIO inside the definition allows it
to be used in pure contexts, fixing one place where an ad-hoc call to
unsafePerformIO is already needed.
- - - - -
ccdf979b by Matthew Pickering at 2025-04-02T16:12:37-04:00
driver: Fix recompilation checking for exported defaults
Since the exported defaults are not associated with any identifier from
the module, they are just added to the export hash rather than
the fine-grained recompilation logic.
Fixes #25855
- - - - -
c5bf9892 by Matthew Pickering at 2025-04-02T16:12:37-04:00
driver: Fix recompilation checking for COMPLETE pragmas
A {-# COMPLETE P, Q #-} pragma is associated with the pattern synonyms P
and Q during recompilation checking. Therefore, the existence of a
pattern synonym becomes part of the ABI hash for P and Q.
Then if a module uses these pattern synonyms and a complete pragma
changes, it will trigger recompilation in that module.
Fixes #25854
- - - - -
d0fd9370 by sheaf at 2025-04-02T16:14:05-04:00
Handle named default exports separately
This commit changes the way we check for duplicate exports of named
default declarations. They are now treated entirely separately from
other exports, because in an export list of the form
module M ( default Cls, Cls )
the default declaration does not export the class 'Cls', but only its
default declarations.
Also fixes a bug in Backpack where named default exports were getting
dropped entirely. No test for that.
Fixes #25857
- - - - -
62d04494 by Cheng Shao at 2025-04-03T05:56:17-04:00
ci: add x86_64-linux-ubuntu24_04 nightly/release jobs
- - - - -
327952e4 by Cheng Shao at 2025-04-03T05:56:17-04:00
rel-eng: add ubuntu24_04 bindists to ghcup metadata and fetch gitlab scripts
- - - - -
aa1e3b8b by sheaf at 2025-04-03T05:57:24-04:00
GHC settings: always unescape escaped spaces
In #25204, it was noted that GHC didn't properly deal with having
spaces in its executable path, as it would compute an invalid path
for the C compiler.
The original fix in 31bf85ee49fe2ca0b17eaee0774e395f017a9373 used a
trick: escape spaces before splitting up flags into a list. This fixed
the behaviour with extra flags (e.g. -I), but forgot to also unescape
for non-flags, e.g. for an executable path (such as the C compiler).
This commit rectifies this oversight by consistently unescaping the
spaces that were introduced in order to split up argument lists.
Fixes #25204
- - - - -
34a9b55d by lazyLambda at 2025-04-04T06:22:26-04:00
Driver: make MonadComprehensions imply ParallelListComp
This commit changes GHC.Driver.Flags.impliedXFlags to make the
MonadComprehensions extension enable the ParallelListComp extension.
Fixes #25645
- - - - -
d99eb7cd by sheaf at 2025-04-04T06:23:28-04:00
NamedDefaults: handle poly-kinded unary classes
With this commit, we accept named default declarations for poly-kinded
classes such as Typeable, e.g.
default Typeable (Char)
This used to fail because we assumed the kind of the class was monomorphic,
e.g.
Type -> Constraint
(Type -> Type) -> Constraint
Nat -> Constraint
Now, we can handle a simple polymorphic class such as
Typeable :: forall k. k -> Constraint
Note that we keep the restriction that the class must only have
one visible argument.
This is all explained in the new Note [Instance check for default declarations]
in GHC.Tc.Gen.Default.
Fixes #25882
- - - - -
4cbc90de by sheaf at 2025-04-04T11:39:05-04:00
LLVM: add type annotations to AtomicFetch_cmm.cmm
- - - - -
e2237305 by sheaf at 2025-04-04T11:39:05-04:00
Cmm lint: lint argument types of CallishMachOps
This commit adds a new check to Cmm lint to ensure that the argument
types to a CallishMachOp are correct. The lack of this check was
detected in the AtomicFetch test: the literals being passed as the
second arguments to operations such as 'fetch_add', 'fetch_and'... were
of the wrong width, which tripped up the LLVM backend.
- - - - -
9363e547 by Cheng Shao at 2025-04-04T11:39:50-04:00
ci: add ghc-wasm-meta integration testing jobs
This patch adds ghc-wasm-meta integration testing jobs to the CI
pipeline, which are only triggered via the `test-wasm` MR label or
manually when the `wasm` label is set.
These jobs will fetch the wasm bindists and test them against a
variety of downstream projects, similarly to head.hackage jobs for
native bindists, offering a convenient way to catch potential
downstream breakage while refactoring the wasm backend.
- - - - -
27029e60 by Adam Gundry at 2025-04-04T11:40:36-04:00
base: Minor fixes to GHC.Records haddocks
This corrects a stale reference to OverloadedRecordFields (which should
be OverloadedRecordDot), fixes the haddock link syntax and adds an
@since pragma.
- - - - -
f827c4c6 by Rodrigo Mesquita at 2025-04-07T11:22:10-04:00
Parametrize default logger action with Handles
Introduce `defaultLogActionWithHandles` to allow GHC applications to use
GHC's formatting but using custom handles.
`defaultLogAction` is then trivially reimplemented as
```
defaultLogActionWithHandles stdout stderr
```
- - - - -
5dade5fd by sheaf at 2025-04-07T11:23:02-04:00
Finer-grained recompilation checking for exports
This commit refines the recompilation checking logic, to avoid
recompiling modules with an explicit import list when the modules they
import start exporting new items.
More specifically, when:
1. module N imports module M,
2. M is changed, but in a way that:
a. preserves the exports that N imports
b. does not introduce anything that forces recompilation downstream,
such as orphan instances
then we no longer require recompilation of N.
Note that there is more to (2a) as initially meets the eye:
- if N includes a whole module or "import hiding" import of M,
then we require that the export list of M does not change,
- if N only includes explicit imports, we check that the imported
items don't change, e.g.
- if we have @import M(T(K, f), g)@, we must check that N
continues to export all these identifiers, with the same Avail
structure (i.e. we should error if N stops bundling K or f with
T)
- if we have @import M(T(..))@, we must check that the children
of T have not changed
See Note [When to recompile when export lists change?] in GHC.Iface.Recomp.
This is all tested in the new tests RecompExports{1,2,3,4,5}
Fixes #25881
- - - - -
f32d6c2b by Andreas Klebinger at 2025-04-07T22:01:25-04:00
NCG: AArch64 - Add -finter-module-far-jumps.
When enabled the arm backend will assume jumps to targets outside of the
current module are further than 128MB away.
This will allow for code to work if:
* The current module results in less than 128MB of code.
* The whole program is loaded within a 4GB memory region.
We have seen a few reports of broken linkers (#24648) where this flag might allow
a program to compile/run successfully at a very small performance cost.
-------------------------
Metric Increase:
T783
-------------------------
- - - - -
553c280b by Andreas Klebinger at 2025-04-07T22:02:11-04:00
Revert "rts: fix small argument passing on big-endian arch (fix #23387)"
Based on analysis documented in #25791 this doesn't fully fix the big
while introducing new bugs on little endian architectures.
A more complete fix will have to be implemented to fix #23387
This reverts commit 4f02d3c1a7b707e609bb3aea1dc6324fa19a5c39.
- - - - -
b0dc6599 by Andreas Klebinger at 2025-04-07T22:02:11-04:00
Interpreter: Fixes to handling of subword value reads/writes.
Load subword values as full words from the stack truncating/expanding as
neccesary when dealing with subwords. This way byte order is implicitly
correct.
This commit also fixes the order in which we are pushing literals onto
the stack on big endian archs.
Last but not least we enable a test for ghci which actually tests these
subword operations.
- - - - -
ed38c09b by Cheng Shao at 2025-04-07T22:02:53-04:00
testsuite: don't test WasmControlFlow stdout
This patch solves a potential test flakiness in `WasmControlFlow` by
removing `WasmControlFlow.stdout` which is not so portable/stable as
it seems. See added `Note [WasmControlFlow]` for more detailed
explanation.
- - - - -
f807c590 by Rodrigo Mesquita at 2025-04-08T17:41:51-04:00
debugger: Add docs to obtainTermFromId
- - - - -
5dba052d by Rodrigo Mesquita at 2025-04-08T17:41:51-04:00
Move logic to find and set Breakpoint to GHC
Breakpoints are uniquely identified by a module and an index unique
within that module. `ModBreaks` of a Module contains arrays mapping from
this unique breakpoint index to information about each breakpoint. For
instance, `modBreaks_locs` stores the `SrcSpan` for each breakpoint.
To find a breakpoint using the line number you need to go through all
breakpoints in the array for a given module and look at the line and
column stored in the `SrcSpan`s. Similarly for columns and finding
breakpoints by name.
This logic previously lived within the `GHCi` application sources,
however, it is common to any GHC applications wanting to set
breakpoints, like the upcoming `ghc-debugger`.
This commit moves this logic for finding and setting breakpoints to the
GHC library so it can be used by both `ghci` and `ghc-debugger`.
- - - - -
bc0b9f73 by Rodrigo Mesquita at 2025-04-08T17:41:51-04:00
Refactor and move logic for identifier breakpoints
Breakpoints can be set on functions using syntax of the form
`[Module.]function`. The parsing, resolution (e.g. inferring implicit
module), and validation of this syntax for referring to functions was
tightly coupled with its GHCi use.
This commit extracts the general purpose bits of resolving this syntax
into `GHC.Runtime.Debugger.Breakpoints` so it can be further used by
other GHC applications and to improve the code structure of GHCi.
Moreover, a few utilities that do splitting and joining of identifiers
as strings were moved to `GHC.Runtime.Eval.Utils`, which also can be
used in the future to clean up `GHC.Runtime.Eval` a bit.
- - - - -
4f728d21 by Rodrigo Mesquita at 2025-04-08T17:41:51-04:00
debugger: derive Ord for BreakpointIds
- - - - -
5528771c by Rodrigo Mesquita at 2025-04-08T17:41:51-04:00
debugger: Move context utils from GHCi to GHC
Moves `enclosingTickSpan`, `getCurrentBreakSpan`, and
`getCurrentBreakModule`, general utilities on the internal debugger
state, into the GHC library.
- - - - -
4871f543 by sheaf at 2025-04-08T17:42:43-04:00
Implicit quantification in type synonyms: add test
This adds a test for ticket #24090, which involves implicit
quantification in type synonyms.
The underlying issue was fixed in 0d4ee209dfe53e5074d786487f531dabc36d561c.
- - - - -
48917d3c by sheaf at 2025-04-08T17:42:44-04:00
Turn on implicit-rhs-quantification by default
This flag was added to GHC 9.8, and will be removed in a future GHC
release. In preparation, this commit adds it to the default warning
flags.
- - - - -
629be068 by Rodrigo Mesquita at 2025-04-08T17:43:26-04:00
debugger: Add breakpoints to every Stmt
While single-stepping through a Haskell program we stop at every
breakpoint. However, we don't introduce breakpoints at every single
expression (e.g. single variables) because they would be too many and
uninteresting.
That said, in a do-block, it is expected that stepping over would break
at every line, even if it isn't particularly interesting (e.g. a single
arg like getArgs). Moreover, let-statements in do-blocks, despite only
being evaluated once needed, lead to surprising jumps while stepping
through because some have outermost (outside the let) breakpoints
while others don't.
This commit makes every statement in a do-block have a breakpoint.
This leads to predictable stepping through in a do-block.
Duplicate breakpoints in the same location are avoided using the
existing blacklist mechanism, which was missing a check in one relevant place.
Fixes #25932
- - - - -
99a3affd by Matthew Pickering at 2025-04-08T17:44:08-04:00
driver: refactor: Split downsweep and MakeAction into separate modules.
This will facilitate using the downsweep functions in other parts of
the compiler than just --make mode.
Also, the GHC.Driver.Make module was huge. Now it's still huge but
slightly smaller!
- - - - -
ecfec4df by sheaf at 2025-04-09T14:13:12-04:00
Store user-written qualification in the GhcRn AST
This commit ensures we store the original user-written module
qualification in the renamed AST. This allows us to take into account
the user-written qualification in error messages.
Fixes #25877
- - - - -
97c884e2 by sheaf at 2025-04-09T14:13:12-04:00
TcRnIllegalTermLevelUse: simpler error when possible
This commit makes GHC emit a simple error message in the case of an
illegal term-level use of a data constructor: we will try to report an
out-of-scope error instead of a "Illegal term level use" error, as the
latter might be a bit overwhelming for newcomers.
We do this when we have a data constructor import suggestion to provide
to the user. For example:
module M where { data A = A }
module N where
import M(A)
x = Bool
-- Illegal term-level use of Bool
y = A
-- Data constructor not in scope: A.
-- Perhaps add 'A' to the import list of 'M'.
This commit also revamps the "similar names" suggestion mechanism,
and in particular its treatment of name spaces. Now, which name spaces
we suggest is based solely on what we are looking for, and no longer on
the NameSpace of the Name we have. This is because, for illegal term-level
use errors, it doesn't make much sense to change the suggestions based
on the fact that we resolved to e.g. a type constructor/class; what
matters is what we were expecting to see in this position.
See GHC.Rename.Unbound.{suggestionIsRelevant,relevantNameSpace} as well
as the new constructors to GHC.Tc.Errors.Types.WhatLooking.
Fixes #23982
- - - - -
bff645ab by Rodrigo Mesquita at 2025-04-09T14:13:57-04:00
driver: Split Session functions out of Main
This commit moves out functions that help in creating and validating a
GHC multi session from Main into the ghc library where they can be used by
other GHC applications.
Moreover, `Mode` processing and `checkOptions` linting were moved to
separate modules within the ghc-bin executable package.
In particular:
- Move `Mode` types and functions (referring to the mode GHC is running
on) to `ghc-bin:GHC.Driver.Session.Mode`
- Move `checkOptions` and aux functions, which validates GHC DynFlags
based on the mode, to `ghc-bin:GHC.Driver.Session.Lint`
- Moves `initMulti`, `initMake`, and aux functions, which initializes a make/multi-unit
session, into `ghc:GHC.Driver.Session.Units`.
- - - - -
501b015e by Rodrigo Mesquita at 2025-04-09T14:13:57-04:00
docs: Improve haddock of ExecComplete
- - - - -
dea98988 by Andreas Klebinger at 2025-04-09T19:23:57-04:00
Avoid oversaturing constructor workers.
Constructor applications always need to take the exact number of
arguments. If we can't ensure that instead apply the constructor worker
like a regular function.
Fixes #23865
- - - - -
f1acdd2c by sheaf at 2025-04-09T19:25:41-04:00
NamedDefaults: require the class to be standard
We now only default type variables if they only appear in constraints
of the form `C v`, where `C` is either a standard class or a class with
an in-scope default declaration.
This rectifies an oversight in the original implementation of the
NamedDefault extensions that was remarked in #25775; that implementation
allowed type variables to appear in unary constraints which had arbitrary
classes at the head.
See the rewritten Note [How type-class constraints are defaulted] for
details of the implementation.
Fixes #25775
Fixes #25778
- - - - -
5712e0d6 by Vladislav Zavialov at 2025-04-10T05:17:38+00:00
Retry type/class declarations and instances (#12088)
Retry type/class declarations and instances to account for non-lexical
dependencies arising from type/data family instances.
This patch improves the kind checker's ability to use type instances in kind
checking of other declarations in the same module.
* Key change: tcTyAndClassDecls now does multiple passes over the TyClGroups,
as long as it is able to make progress.
See the new Note [Retrying TyClGroups] in GHC.Tc.TyCl
* Supporting change: FVs of a TyClGroup are now recorded in its extension
field, namely XCTyClGroup.
See the new Note [Prepare TyClGroup FVs] in GHC.Rename.Module
* Instances are no longer inserted at the earliest positions where their FVs
are bound. This is a simplification.
See the new Note [Put instances at the end] in GHC.Rename.Module
* Automatic unpacking is now more predictable, but fewer fields get unpacked
by default. Use explicit {-# UNPACK #-} pragmas instead.
See the new Note [Flaky -funbox-strict-fields with type/data families]
For the wide range of newly accepted programs, consult the added test cases.
Fixed tickets:
#12088, #12239, #14668, #15561, #16410, #16448, #16693,
#19611, #20875, #21172, #22257, #25238, #25834
Metric Decrease:
T8095
- - - - -
bc73a78d by sheaf at 2025-04-10T15:07:24-04:00
checkFamApp: don't be so eager to cycle break
As remarked in #25933, a pure refactoring of checkTyEqRhs in
ab77fc8c7adebd610aa0bd99d653f9a6cc78a374 inadvertently changed behaviour,
as it caused GHC to introduce cycle-breaker variables in some
unnecessary circumstances.
This commit refactors 'GHC.Tc.Utils.Unify.checkFamApp' in a way that
should restore the old behaviour, so that, when possible, we first
recur into the arguments and only introduce a cycle breaker if this
recursion fails (e.g. due to an occurs check failure).
Fixes #25933
- - - - -
3acd8182 by Andreas Klebinger at 2025-04-10T22:32:12-04:00
Expand docs for RTS flag `-M`.
The behaviour of how/when exceptions are raised was not really covered
in the docs.
- - - - -
026c1a39 by Adam Sandberg Ericsson at 2025-04-10T22:32:56-04:00
add cases for more SchedulerStatus codes in rts_checkSchedStatus
- - - - -
5977c6a1 by sheaf at 2025-04-10T22:33:46-04:00
Squash warnings in GHC.Runtime.Heap.Inspect
There were incomplete record selector warnings in GHC.Runtime.Heap.Inspect
due to the use of the partial 'dataArgs' record selector. This is fixed
by passing the fields to the 'extractSubTerms' function directly,
rather than passing a value of the parent data type.
- - - - -
6a3e38f5 by Andreas Klebinger at 2025-04-11T15:13:53-04:00
hadrian: Make ghcWithInterpreter the universal source of truth about availability of the interpreter
We were doing some ad-hoc checks in different places in hadrian to
determine whether we supported the interprter or not. Now this check if
confined to one function, `ghcWithInterpreter`, and all the places which
use this information consult `ghcWithInterpreter` to determine what to
do.
Fixes #25533.
- - - - -
207de6f1 by Matthew Pickering at 2025-04-11T15:14:37-04:00
testsuite: Fix running TH tests with profiled dynamic compiler
Previously, I had failed to update the ghc_th_way_flags logic for the
profiled dynamic compiler.
In addition to this `ghc_dynamic` was incorrectly set for profiled
dynamic compiler.
I also updated MultiLayerModulesTH_OneShot test to work for any compiler
linkage rather than just dynamic.
Fixes #25947
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
-------------------------
- - - - -
5455f2b9 by Matthew Pickering at 2025-04-12T08:31:36-04:00
driver: Add support for "Fixed" nodes in the ModuleGraph
A fixed node in the module graph is one which we presume is already
built. It's therefore up to the user to make sure that the interface
file and any relevant artifacts are available for a fixed node.
Fixed/Compile nodes are represented by the ModuleNodeInfo type, which
abstracts the common parts of Fixed/Compile nodes with accessor
functions of type `ModuleNodeInfo -> ...`.
Fixed nodes can only depend on other fixed nodes. This invariant can be
checked by the function `checkModuleGraph` or `mkModuleGraphChecked`.
--make mode is modified to work with fixed mode. In order to "compile" a
fixed node, the artifacts are just loaded into the HomePackageTable.
Currently nothing in the compiler will produce Fixed nodes but this is
tested with the FixedNodes GHC API test.
In subsequent patches we are going to remove the ExternalModuleGraph and
use Fixed nodes for modules in the module graph in oneshot mode.
Fixes #25920
- - - - -
ad64d5c2 by Cheng Shao at 2025-04-12T08:32:19-04:00
ci: remove manual case of ghc-wasm-meta downstream testing jobs
This patch removes the manual case of ghc-wasm-meta downstream testing
jobs; now the only way of including them in the pipeline and running
them is via the test-wasm label.
The reason of the removal is it proves to be problematic for MRs with
only the wasm label; the wasm job would succeed, then the pipeline
status would be waiting for manual action instead of succeeding. There
needs to be separate jobs for the label-triggered and manual-triggered
cases, but I don't think it's worth that extra complexity, the
label-triggered case is already sufficient.
- - - - -
b34890c7 by Vladislav Zavialov at 2025-04-13T01:08:21+03:00
Fix EmptyCase panic in tcMatches (#25960)
Due to faulty reasoning in Note [Pattern types for EmptyCase],
tcMatches was too keen to panic.
* Old (incorrect) assumption: pat_tys is a singleton list.
This does not hold when \case{} is checked against a function type
preceded by invisible forall. See the new T25960 test case.
* New (hopefully correct) assumption: vis_pat_tys is a singleton list.
This should follow from:
checkArgCounts :: MatchGroup GhcRn ... -> TcM VisArity
checkArgCounts (MG { mg_alts = L _ [] })
= return 1
...
- - - - -
84806ebc by Vladislav Zavialov at 2025-04-13T11:40:08-04:00
Remove unused type: TokenLocation
- - - - -
05eb50df by Vladislav Zavialov at 2025-04-13T19:16:38-04:00
Register EpToken in Parser.PostProcess.Haddock (#22558)
This change allows us to reject more badly placed Haddock comments.
Examples:
module
-- | Bad comment for the module
T17544_kw where
data Foo -- | Bad comment for MkFoo
where MkFoo :: Foo
newtype Bar -- | Bad comment for MkBar
where MkBar :: () -> Bar
class Cls a
-- | Bad comment for clsmethod
where
clsmethod :: a
- - - - -
01944e5e by Vladislav Zavialov at 2025-04-13T19:17:21-04:00
Reject puns in T2T (#24153)
This patch implements pun detection in T2T. Consider:
x = 42
f, g :: forall a -> ...
f (type x) = g x
In accordance with the specification, the `g x` function call is renamed
as a term, so `x` refers to the top-level binding `x = 42`, not to the
type variable binding `type x` as one might expect.
This is somewhat counterintuitive because `g` expects a type argument.
Forbidding puns in T2T allows us to produce a helpful error message:
Test.hs:5:16: error: [GHC-09591]
Illegal punned variable occurrence in a required type argument.
The name ‘x’ could refer to:
‘x’ defined at Test.hs:3:1
‘x’ bound at Test.hs:5:9
This commit is a follow up to 0dfb1fa799af254c8a1e1045fc3996af2d57a613
where checking for puns was left as future work.
- - - - -
cc580552 by Vladislav Zavialov at 2025-04-13T19:18:02-04:00
Additional test cases for #12088, #13790
Extract more test cases from ticket discussions, including multi-module
examples. Follow up to 5712e0d646f611dfbfedfd7ef6dff3a18c016edb
- - - - -
d47bf776 by Matthew Pickering at 2025-04-14T16:44:41+01:00
driver: Use ModuleGraph for oneshot and --make mode
This patch uses the `hsc_mod_graph` field for both oneshot and --make
mode. Therefore, if part of the compiler requires usage of the module
graph, you do so in a uniform way for the two different modes.
The `ModuleGraph` describes the relationship between the modules in the
home package and units in external packages. The `ModuleGraph` can be
queried when information about the transitive closure of a package is
needed. For example, the primary use of the ModuleGraph from within the
compiler is in the loader, which needs to know the transitive closure of
a module so it can load all the relevant objects for evaluation.
In --make mode, downsweep computes the ModuleGraph before any
compilation starts.
In oneshot mode, a thunk is created at the start of compilation, which
when forced will compute the module graph beneath the current module.
The thunk is only forced at the moment when the user uses Template
Haskell.
Finally, there are some situations where we need to discover what
dependencies to load but haven't loaded a module graph at all. In this
case, there is a fallback which computes the transitive closure on the
fly and doesn't cache the result. Presumably if you are going to call
getLinkDeps a lot, you would compute the right ModuleGraph before you
started.
Importantly, this removes the ExternalModuleGraph abstraction. This was quite
awkward to work with since it stored information about the home package
inside the EPS.
This patch will also be very useful when implementing explicit level
imports, which requires more significant use of the module graph in
order to determine which level instances are available at.
Towards #25795
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
MultiLayerModulesTH_OneShot
-------------------------
- - - - -
395e0ad1 by sheaf at 2025-04-16T12:33:26-04:00
base: remove .Internal modules (e.g. GHC.TypeLits)
This commit removes the following internal modules from base,
as per CLC proposal 217:
- GHC.TypeNats.Internal
- GHC.TypeLits.Internal
- GHC.ExecutionStack.Internal
Fixes #25007
- - - - -
e0f3ff11 by Patrick at 2025-04-17T04:31:12-04:00
Refactor Handling of Multiple Default Declarations
Fixes: #25912, #25914, #25934
Previously, GHC discarded all loaded defaults (tcg_default) when local
defaults were encountered during typechecking. According to the
exportable-named-default proposal (sections 2.4.2 and 2.4.3), local
defaults should be merged into tcg_default, retaining any defaults
already present while overriding where necessary.
Key Changes:
* Introduce DefaultProvenance to track the origin of default declarations
(local, imported, or built-in), replacing the original cd_module
in ClassDefaults with cd_provenance :: DefaultProvenance.
* Rename tcDefaults to tcDefaultDecls, limiting its responsibility to only
converting renamed class defaults into ClassDefaults.
* Add extendDefaultEnvWithLocalDefaults to merge local defaults into the
environment, with proper duplication checks:
- Duplicate local defaults for a class trigger an error.
- Local defaults override imported or built-in defaults.
* Update and add related notes: Note [Builtin class defaults],
Note [DefaultProvenance].
* Add regression tests: T25912, T25914, T25934.
Thanks sam and simon for the help on this patch.
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
386f1854 by Teo Camarasu at 2025-04-17T04:31:55-04:00
template-haskell: Remove `addrToByteArrayName` and `addrToByteArray`
These were part of the implementation of the `Lift ByteArray` instance and were errornously exported because this module lacked an explicit export list. They have no usages on Hackage.
Resolves #24782
- - - - -
b96e2f77 by Sylvain Henry at 2025-04-18T20:46:33-04:00
RTS: remove target info and fix host info (#24058)
The RTS isn't a compiler, hence it doesn't have a target and we remove
the reported target info displayed by "+RTS --info". We also fix the
host info displayed by "+RTS --info": the host of the RTS is the
RTS-building compiler's target, not the compiler's host (wrong when
doing cross-compilation).
- - - - -
6d9965f4 by Sylvain Henry at 2025-04-18T20:46:33-04:00
RTS: remove build info
As per the discussion in !13967, there is no reason to tag the RTS with
information about the build platform.
- - - - -
d52e9b3f by Vladislav Zavialov at 2025-04-18T20:47:15-04:00
Diagnostics: remove the KindMismatch constructor (#25957)
The KindMismatch constructor was only used as an intermediate
representation in pretty-printing.
Its removal addresses a problem detected by the "codes" test case:
[GHC-89223] is untested (constructor = KindMismatch)
In a concious deviation from the usual procedure, the error code
GHC-89223 is removed entirely rather than marked as Outdated.
The reason is that it never was user-facing in the first place.
- - - - -
e2f2f9d0 by Vladislav Zavialov at 2025-04-20T10:53:39-04:00
Add name for -Wunusable-unpack-pragmas
This warning had no name or flag and was triggered unconditionally.
Now it is part of -Wdefault.
In GHC.Tc.TyCl.tcTyClGroupsPass's strict mode, we now have to
force-enable this warning to ensure that detection of flawed groups
continues to work even if the user disables the warning with the
-Wno-unusable-unpack-pragmas option. Test case: T3990c
Also, the misnamed BackpackUnpackAbstractType is now called
UnusableUnpackPragma.
- - - - -
6caa6508 by Adam Gundry at 2025-04-20T10:54:22-04:00
Fix specialisation of incoherent instances (fixes #25883)
GHC normally assumes that class constraints are canonical, meaning that
the specialiser is allowed to replace one dictionary argument with another
provided that they have the same type. The `-fno-specialise-incoherents`
flag alters INCOHERENT instance definitions so that they will prevent
specialisation in some cases, by inserting `nospec`.
This commit fixes a bug in 7124e4ad76d98f1fc246ada4fd7bf64413ff2f2e, which
treated some INCOHERENT instance matches as if `-fno-specialise-incoherents`
was in effect, thereby unnecessarily preventing specialisation. In addition
it updates the relevant `Note [Rules for instance lookup]` and adds a new
`Note [Canonicity for incoherent matches]`.
- - - - -
0426fd6c by Adam Gundry at 2025-04-20T10:54:23-04:00
Add regression test for #23429
- - - - -
eec96527 by Adam Gundry at 2025-04-20T10:54:23-04:00
user's guide: update specification of overlapping/incoherent instances
The description of the instance resolution algorithm in the user's
guide was slightly out of date, because it mentioned in-scope given
constraints only at the end, whereas the implementation checks for
their presence before any of the other steps.
This also adds a warning to the user's guide about the impact of
incoherent instances on specialisation, and more clearly documents
some of the other effects of `-XIncoherentInstances`.
- - - - -
a00eeaec by Matthew Craven at 2025-04-20T10:55:03-04:00
Fix bytecode generation for `tagToEnum# <LITERAL>`
Fixes #25975.
- - - - -
ca27a892 by Rodrigo Mesquita at 2025-04-21T13:49:25+02:00
Specialize pprInstr
- - - - -
3481 changed files:
- .ghcid
- .gitattributes
- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/flake.lock
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/hello.hs
- .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/rel_eng/recompress-all
- .gitlab/rel_eng/upload.sh
- .gitlab/rel_eng/upload_ghc_libs.py
- .gitmodules
- CODEOWNERS
- 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/Ids.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types/Literals.hs
- 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/ByteCode/Types.hs
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/BlockId.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CallConv.hs
- compiler/GHC/Cmm/Config.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/GenericOpt.hs
- compiler/GHC/Cmm/Graph.hs
- compiler/GHC/Cmm/Info.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/Liveness.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/Reducibility.hs
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/Cmm/Switch.hs
- compiler/GHC/Cmm/Switch/Implement.hs
- compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/Cmm/Type.hs
- + compiler/GHC/Cmm/UniqueRenamer.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/Config.hs
- compiler/GHC/CmmToAsm/Dwarf.hs
- compiler/GHC/CmmToAsm/Dwarf/Constants.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/Format.hs
- compiler/GHC/CmmToAsm/Instr.hs
- compiler/GHC/CmmToAsm/Monad.hs
- compiler/GHC/CmmToAsm/PIC.hs
- compiler/GHC/CmmToAsm/PPC.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/RV64.hs
- + compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- + compiler/GHC/CmmToAsm/RV64/Cond.hs
- + compiler/GHC/CmmToAsm/RV64/Instr.hs
- + compiler/GHC/CmmToAsm/RV64/Ppr.hs
- + compiler/GHC/CmmToAsm/RV64/RegInfo.hs
- + compiler/GHC/CmmToAsm/RV64/Regs.hs
- compiler/GHC/CmmToAsm/Reg/Graph.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Base.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Coalesce.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Spill.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillCost.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Stats.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/Linear/Base.hs
- compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
- compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
- compiler/GHC/CmmToAsm/Reg/Linear/PPC.hs
- + compiler/GHC/CmmToAsm/Reg/Linear/RV64.hs
- compiler/GHC/CmmToAsm/Reg/Linear/StackMap.hs
- compiler/GHC/CmmToAsm/Reg/Linear/State.hs
- compiler/GHC/CmmToAsm/Reg/Linear/Stats.hs
- compiler/GHC/CmmToAsm/Reg/Linear/X86.hs
- compiler/GHC/CmmToAsm/Reg/Linear/X86_64.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/X86.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.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/Data.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/OverloadedCalls.hs
- compiler/GHC/Core/LateCC/TopLevelBinds.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/Opt/Arity.hs
- compiler/GHC/Core/Opt/CSE.hs
- compiler/GHC/Core/Opt/CallArity.hs
- 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/FloatIn.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify/Env.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/StaticArgs.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Predicate.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/Compare.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/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/TyCon.hs-boot
- 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/FastString.hs
- compiler/GHC/Data/FastString/Env.hs
- compiler/GHC/Data/FlatBag.hs
- compiler/GHC/Data/Graph/Collapse.hs
- compiler/GHC/Data/Graph/Color.hs
- compiler/GHC/Data/Graph/Directed.hs
- + compiler/GHC/Data/Graph/Directed/Internal.hs
- + compiler/GHC/Data/Graph/Directed/Reachability.hs
- compiler/GHC/Data/Graph/Inductive/Graph.hs
- compiler/GHC/Data/IOEnv.hs
- + compiler/GHC/Data/List.hs
- compiler/GHC/Data/List/Infinite.hs
- + compiler/GHC/Data/List/NonEmpty.hs
- compiler/GHC/Data/Maybe.hs
- compiler/GHC/Data/Pair.hs
- compiler/GHC/Data/SmallArray.hs
- compiler/GHC/Data/Stream.hs
- compiler/GHC/Data/Strict.hs
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- compiler/GHC/Data/TrieMap.hs
- compiler/GHC/Data/Unboxed.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
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- compiler/GHC/Driver/Backpack.hs
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- compiler/GHC/Driver/Config/CmmToAsm.hs
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- compiler/GHC/Driver/Config/Core/Rules.hs
- compiler/GHC/Driver/Config/CoreToStg/Prep.hs
- compiler/GHC/Driver/Config/Finder.hs
- compiler/GHC/Driver/Config/Linker.hs
- compiler/GHC/Driver/Config/Parser.hs
- compiler/GHC/Driver/Config/Stg/Pipeline.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- + compiler/GHC/Driver/Downsweep.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
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- compiler/GHC/Driver/GenerateCgIPEStub.hs
- compiler/GHC/Driver/Hooks.hs
- + compiler/GHC/Driver/IncludeSpecs.hs
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- + compiler/GHC/Driver/Main.hs-boot
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- + compiler/GHC/Driver/MakeAction.hs
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- + compiler/GHC/Driver/Messager.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/Plugins.hs
- compiler/GHC/Driver/Ppr.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/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Extension.hs
- compiler/GHC/Hs/ImpExp.hs
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- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Specificity.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/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/Call.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Wasm.hs
- compiler/GHC/HsToCore/GuardedRHSs.hs
- compiler/GHC/HsToCore/ListComp.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/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/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/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Types.hs
- + compiler/GHC/Iface/Flags.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/Recomp/Flags.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/IfaceToCore.hs-boot
- compiler/GHC/JS/Make.hs
- compiler/GHC/JS/Opt/Expr.hs
- compiler/GHC/JS/Opt/Simple.hs
- compiler/GHC/JS/Ppr.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/Static.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Linker/Unit.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/CharClass.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/Lexer/Interface.hs
- + compiler/GHC/Parser/Lexer/String.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- + compiler/GHC/Parser/String.hs
- compiler/GHC/Parser/Types.hs
- compiler/GHC/Platform.hs
- compiler/GHC/Platform/LoongArch64.hs
- compiler/GHC/Platform/Reg.hs
- compiler/GHC/Platform/Reg/Class.hs
- + compiler/GHC/Platform/Reg/Class/NoVectors.hs
- + compiler/GHC/Platform/Reg/Class/Separate.hs
- + compiler/GHC/Platform/Reg/Class/Unified.hs
- compiler/GHC/Platform/Ways.hs
- compiler/GHC/Plugins.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/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Context.hs
- compiler/GHC/Runtime/Debugger.hs
- + compiler/GHC/Runtime/Debugger/Breakpoints.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Eval/Types.hs
- + compiler/GHC/Runtime/Eval/Utils.hs
- compiler/GHC/Runtime/Heap/Inspect.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/Interpreter/Types/SymbolCache.hs
- + compiler/GHC/Runtime/Interpreter/Wasm.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/EnforceEpt.hs
- compiler/GHC/Stg/InferTags/Rewrite.hs → compiler/GHC/Stg/EnforceEpt/Rewrite.hs
- compiler/GHC/Stg/InferTags/TagSig.hs → compiler/GHC/Stg/EnforceEpt/TagSig.hs
- compiler/GHC/Stg/InferTags/Types.hs → compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/Stg/Lift/Analysis.hs
- + compiler/GHC/Stg/Make.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/Expr.hs
- compiler/GHC/StgToCmm/ExtCode.hs
- compiler/GHC/StgToCmm/Foreign.hs
- compiler/GHC/StgToCmm/Hpc.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/Types.hs
- compiler/GHC/StgToCmm/Utils.hs
- compiler/GHC/StgToJS/Apply.hs
- compiler/GHC/StgToJS/Arg.hs
- compiler/GHC/StgToJS/CodeGen.hs
- compiler/GHC/StgToJS/Expr.hs
- compiler/GHC/StgToJS/ExprCtx.hs
- compiler/GHC/StgToJS/Ids.hs
- compiler/GHC/StgToJS/Linker/Linker.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/Sinker/Collect.hs
- compiler/GHC/StgToJS/Sinker.hs → compiler/GHC/StgToJS/Sinker/Sinker.hs
- + compiler/GHC/StgToJS/Sinker/StringsUnfloat.hs
- compiler/GHC/StgToJS/Symbols.hs
- compiler/GHC/StgToJS/Types.hs
- compiler/GHC/SysTools/Cpp.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
- 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/Plugin.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Errors/Types/PromotionErr.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
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Do.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/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
- compiler/GHC/Tc/Instance/FunDeps.hs
- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver.hs
- + compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.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/BasicTypes.hs
- compiler/GHC/Tc/Types/Constraint.hs
- + compiler/GHC/Tc/Types/CtLoc.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/Origin.hs
- 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/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcMType.hs-boot
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Utils/Unify.hs-boot
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Tc/Zonk/Env.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Annotations.hs
- compiler/GHC/Types/Avail.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Breakpoint.hs
- compiler/GHC/Types/CompleteMatch.hs
- compiler/GHC/Types/CostCentre.hs
- compiler/GHC/Types/CostCentre/State.hs
- + compiler/GHC/Types/DefaultEnv.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Fixity.hs
- compiler/GHC/Types/Fixity/Env.hs
- compiler/GHC/Types/ForeignCall.hs
- compiler/GHC/Types/GREInfo.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/HpcInfo.hs
- compiler/GHC/Types/IPE.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/Meta.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/Ppr.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/PkgQual.hs
- compiler/GHC/Types/ProfAuto.hs
- compiler/GHC/Types/SafeHaskell.hs
- compiler/GHC/Types/SourceFile.hs
- + compiler/GHC/Types/SptEntry.hs
- compiler/GHC/Types/SrcLoc.hs
- compiler/GHC/Types/Tickish.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/DSM.hs
- compiler/GHC/Types/Unique/DSet.hs
- compiler/GHC/Types/Unique/FM.hs
- compiler/GHC/Types/Unique/Set.hs
- compiler/GHC/Types/Unique/Supply.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Types/Var/Env.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/External.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/Home/PackageTable.hs
- compiler/GHC/Unit/Info.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/Imported.hs
- compiler/GHC/Unit/Module/Location.hs
- compiler/GHC/Unit/Module/ModDetails.hs
- compiler/GHC/Unit/Module/ModGuts.hs
- compiler/GHC/Unit/Module/ModIface.hs
- + compiler/GHC/Unit/Module/ModNodeKey.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- compiler/GHC/Unit/Module/Status.hs
- compiler/GHC/Unit/Module/Warnings.hs
- compiler/GHC/Unit/Module/WholeCoreBindings.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Unit/Types.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/GlobalVars.hs
- compiler/GHC/Utils/Logger.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Monad.hs
- compiler/GHC/Utils/Monad/State/Strict.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/GHC/Utils/Panic.hs
- compiler/GHC/Utils/Panic/Plain.hs
- compiler/GHC/Utils/TmpFs.hs
- compiler/GHC/Utils/Touch.hs
- compiler/GHC/Utils/Unique.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/BooleanFormula.hs
- compiler/Language/Haskell/Syntax/Decls.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- 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/Language/Haskell/Syntax/Pat.hs
- compiler/Language/Haskell/Syntax/Type.hs
- compiler/Language/Haskell/Syntax/Type.hs-boot
- compiler/Setup.hs
- compiler/cbits/genSym.c
- compiler/ghc.cabal.in
- configure.ac
- distrib/configure.ac.in
- − distrib/cross-port
- − docs/users_guide/9.12.1-notes.rst
- + docs/users_guide/9.14.1-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/diagnostics-as-json-schema-1_0.json
- + docs/users_guide/diagnostics-as-json-schema-1_1.json
- docs/users_guide/eventlog-formats.rst
- docs/users_guide/expected-undocumented-flags.txt
- docs/users_guide/exts/default_signatures.rst
- + docs/users_guide/exts/doandifthenelse.rst
- docs/users_guide/exts/equality_constraints.rst
- docs/users_guide/exts/extended_literals.rst
- docs/users_guide/exts/ffi.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/exts/linear_types.rst
- docs/users_guide/exts/literals.rst
- docs/users_guide/exts/magic_hash.rst
- docs/users_guide/exts/monad_comprehensions.rst
- + docs/users_guide/exts/multiline_strings.rst
- + docs/users_guide/exts/named_defaults.rst
- docs/users_guide/exts/or_patterns.rst
- docs/users_guide/exts/overloaded_record_update.rst
- docs/users_guide/exts/overloaded_strings.rst
- docs/users_guide/exts/parallel_list_comprehensions.rst
- docs/users_guide/exts/poly_kinds.rst
- docs/users_guide/exts/pragmas.rst
- docs/users_guide/exts/primitives.rst
- docs/users_guide/exts/rebindable_syntax.rst
- docs/users_guide/exts/required_type_arguments.rst
- docs/users_guide/exts/rewrite_rules.rst
- docs/users_guide/exts/stolen_syntax.rst
- docs/users_guide/exts/strict.rst
- docs/users_guide/exts/syntax.rst
- docs/users_guide/exts/type_abstractions.rst
- + docs/users_guide/exts/type_defaulting.rst
- docs/users_guide/exts/type_signatures.rst
- docs/users_guide/exts/types.rst
- 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-concurrent.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/using-warnings.rst
- docs/users_guide/using.rst
- docs/users_guide/wasm.rst
- driver/utils/isMinTTY.c
- + ghc/GHC/Driver/Session/Lint.hs
- + 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/GHCi/UI/Monad.hs
- + ghc/GHCi/UI/Print.hs
- ghc/Main.hs
- ghc/ghc-bin.cabal.in
- − ghc/ghc.wrapper
- hadrian/bindist/Makefile
- hadrian/bindist/config.mk.in
- hadrian/bootstrap/bootstrap.py
- hadrian/bootstrap/generate_bootstrap_plans
- hadrian/bootstrap/hadrian-bootstrap-gen.cabal
- hadrian/bootstrap/plan-9_10_1.json
- − hadrian/bootstrap/plan-9_4_1.json
- − hadrian/bootstrap/plan-9_4_2.json
- − hadrian/bootstrap/plan-9_4_3.json
- − hadrian/bootstrap/plan-9_4_4.json
- − hadrian/bootstrap/plan-9_4_5.json
- − hadrian/bootstrap/plan-9_4_6.json
- − hadrian/bootstrap/plan-9_4_7.json
- hadrian/bootstrap/plan-9_6_1.json
- hadrian/bootstrap/plan-9_6_2.json
- hadrian/bootstrap/plan-9_6_3.json
- hadrian/bootstrap/plan-9_6_4.json
- hadrian/bootstrap/plan-9_6_5.json
- hadrian/bootstrap/plan-9_4_8.json → hadrian/bootstrap/plan-9_6_6.json
- hadrian/bootstrap/plan-9_8_1.json
- hadrian/bootstrap/plan-9_8_2.json
- hadrian/bootstrap/plan-bootstrap-9_10_1.json
- − hadrian/bootstrap/plan-bootstrap-9_4_1.json
- − hadrian/bootstrap/plan-bootstrap-9_4_2.json
- − hadrian/bootstrap/plan-bootstrap-9_4_3.json
- − hadrian/bootstrap/plan-bootstrap-9_4_4.json
- − hadrian/bootstrap/plan-bootstrap-9_4_5.json
- − hadrian/bootstrap/plan-bootstrap-9_4_6.json
- − hadrian/bootstrap/plan-bootstrap-9_4_7.json
- hadrian/bootstrap/plan-bootstrap-9_6_1.json
- hadrian/bootstrap/plan-bootstrap-9_6_2.json
- hadrian/bootstrap/plan-bootstrap-9_6_3.json
- hadrian/bootstrap/plan-bootstrap-9_6_4.json
- hadrian/bootstrap/plan-bootstrap-9_6_5.json
- hadrian/bootstrap/plan-bootstrap-9_4_8.json → hadrian/bootstrap/plan-bootstrap-9_6_6.json
- hadrian/bootstrap/plan-bootstrap-9_8_1.json
- hadrian/bootstrap/plan-bootstrap-9_8_2.json
- hadrian/bootstrap/src/Main.hs
- hadrian/build-cabal
- hadrian/cabal.project
- hadrian/cfg/system.config.in
- hadrian/doc/flavours.md
- hadrian/doc/user-settings.md
- hadrian/ghci-multi-cabal.in
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- hadrian/src/Builder.hs
- hadrian/src/CommandLine.hs
- hadrian/src/Context.hs
- hadrian/src/Context/Type.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Hadrian/Haskell/Hash.hs
- hadrian/src/Hadrian/Utilities.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/Progress.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/CabalReinstall.hs
- hadrian/src/Rules/Dependencies.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/SourceDist.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Rules/ToolArgs.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Configure.hs
- hadrian/src/Settings/Builders/DeriveConstants.hs
- hadrian/src/Settings/Builders/GenApply.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Performance.hs
- hadrian/src/Settings/Flavours/Release.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Parser.hs
- hadrian/src/Settings/Program.hs
- hadrian/src/Settings/Warnings.hs
- hadrian/src/Way.hs
- hadrian/stack.yaml
- libffi-tarballs
- − libffi/Makefile
- − libffi/ln
- libraries/Cabal
- libraries/Win32
- libraries/array
- libraries/base/base.cabal → libraries/base/base.cabal.in
- libraries/base/changelog.md
- libraries/base/src/Control/Category.hs
- libraries/base/src/Control/Concurrent.hs
- libraries/base/src/Control/Exception.hs
- libraries/base/src/Control/Exception/Backtrace.hs
- libraries/base/src/Control/Monad/Fix.hs
- libraries/base/src/Control/Monad/Zip.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Enum.hs → libraries/base/src/Data/Bounded.hs
- libraries/base/src/Data/Char.hs
- libraries/base/src/Data/Enum.hs
- libraries/base/src/Data/Functor/Classes.hs
- libraries/base/src/Data/List/NonEmpty.hs
- libraries/base/src/Data/Semigroup.hs
- libraries/base/src/GHC/Base.hs
- libraries/base/src/GHC/Desugar.hs
- libraries/base/src/GHC/Exception.hs
- − libraries/base/src/GHC/ExecutionStack/Internal.hs
- libraries/base/src/GHC/Exts.hs
- + libraries/base/src/GHC/Num/BigNat.hs
- + libraries/base/src/GHC/Num/Integer.hs
- + libraries/base/src/GHC/Num/Natural.hs
- − libraries/base/src/GHC/Pack.hs
- libraries/base/src/GHC/RTS/Flags.hs
- libraries/base/src/GHC/Records.hs
- libraries/base/src/GHC/Stats.hs
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- libraries/base/tests/IO/T21336/T21336a.stderr
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- libraries/base/tests/IO/all.T
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- libraries/base/tests/IO/withFileBlocking002.stderr
- libraries/base/tests/T15349.stderr
- libraries/base/tests/T16111.stderr
- libraries/base/tests/T19288.stderr
- + libraries/base/tests/T24807.hs
- + libraries/base/tests/T24807.stderr
- + libraries/base/tests/T25066.hs
- + libraries/base/tests/T25066.stderr
- libraries/base/tests/T9586.hs
- libraries/base/tests/all.T
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- libraries/base/tests/dynamic002.hs
- libraries/base/tests/enum01.stdout
- libraries/base/tests/enum01.stdout-alpha-dec-osf3
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- libraries/base/tests/enum02.stdout
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- libraries/base/tests/enum03.stdout
- libraries/base/tests/enum03.stdout-alpha-dec-osf3
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- libraries/base/tests/enum03.stdout-ws-64
- libraries/base/tests/enum03.stdout-x86_64-unknown-openbsd
- libraries/base/tests/foldableArray.hs
- libraries/base/tests/list001.hs
- libraries/base/tests/readFloat.stderr
- − libraries/base/tests/topHandler04.hs
- − libraries/base/tests/topHandler04.stderr
- libraries/base/tests/unicode002.stdout
- libraries/base/tests/unicode003.hs
- libraries/base/tests/unicode003.stdout
- libraries/binary
- libraries/bytestring
- libraries/deepseq
- libraries/directory
- libraries/exceptions
- + libraries/file-io
- libraries/filepath
- − libraries/ghc-bignum/.gitignore
- + libraries/ghc-bignum/Dummy.hs
- − libraries/ghc-bignum/aclocal.m4
- libraries/ghc-bignum/changelog.md
- − libraries/ghc-bignum/config.mk.in
- − libraries/ghc-bignum/configure.ac
- − libraries/ghc-bignum/ghc-bignum.buildinfo.in
- libraries/ghc-bignum/ghc-bignum.cabal
- − libraries/ghc-bignum/install-sh
- + libraries/ghc-boot-th/GHC/Boot/TH/Lib.hs
- libraries/ghc-boot-th/GHC/Internal/TH/Lib/Map.hs → libraries/ghc-boot-th/GHC/Boot/TH/Lib/Map.hs
- + libraries/ghc-boot-th/GHC/Boot/TH/Lift.hs
- libraries/ghc-boot-th/GHC/Internal/TH/Ppr.hs → libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
- libraries/ghc-boot-th/GHC/Internal/TH/PprLib.hs → libraries/ghc-boot-th/GHC/Boot/TH/PprLib.hs
- + libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs
- + libraries/ghc-boot-th/GHC/Boot/TH/Syntax.hs
- libraries/ghc-boot-th/ghc-boot-th.cabal.in
- libraries/ghc-boot/GHC/BaseDir.hs
- libraries/ghc-boot/GHC/Data/ShortText.hs
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- libraries/ghc-compact/tests/compact_mutable.stderr
- libraries/ghc-compact/tests/compact_pinned.stderr
- libraries/ghc-experimental/ghc-experimental.cabal → libraries/ghc-experimental/ghc-experimental.cabal.in
- libraries/ghc-experimental/src/Data/Sum/Experimental.hs
- libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
- + libraries/ghc-experimental/src/GHC/PrimOps.hs
- + libraries/ghc-experimental/src/GHC/RTS/Flags/Experimental.hs
- + libraries/ghc-experimental/src/GHC/Stats/Experimental.hs
- libraries/ghc-experimental/src/GHC/Wasm/Prim.hs
- libraries/ghc-experimental/src/Prelude/Experimental.hs
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- libraries/ghc-heap/tests/stack_big_ret.hs
- libraries/ghc-heap/tests/stack_misc_closures_c.c
- libraries/ghc-internal/.gitignore
- libraries/ghc-internal/CHANGELOG.md
- libraries/ghc-internal/aclocal.m4
- libraries/ghc-bignum/README.rst → libraries/ghc-internal/bignum-backend.rst
- libraries/ghc-prim/cbits/atomic.c → libraries/ghc-internal/cbits/atomic.c
- libraries/ghc-prim/cbits/bitrev.c → libraries/ghc-internal/cbits/bitrev.c
- libraries/ghc-prim/cbits/bswap.c → libraries/ghc-internal/cbits/bswap.c
- libraries/ghc-prim/cbits/clz.c → libraries/ghc-internal/cbits/clz.c
- libraries/ghc-prim/cbits/ctz.c → libraries/ghc-internal/cbits/ctz.c
- libraries/ghc-prim/cbits/debug.c → libraries/ghc-internal/cbits/debug.c
- libraries/ghc-bignum/cbits/gmp_wrappers.c → libraries/ghc-internal/cbits/gmp_wrappers.c
- + libraries/ghc-internal/cbits/int64x2minmax.c
- libraries/ghc-prim/cbits/longlong.c → libraries/ghc-internal/cbits/longlong.c
- libraries/ghc-prim/cbits/mulIntMayOflo.c → libraries/ghc-internal/cbits/mulIntMayOflo.c
- libraries/ghc-prim/cbits/pdep.c → libraries/ghc-internal/cbits/pdep.c
- libraries/ghc-prim/cbits/pext.c → libraries/ghc-internal/cbits/pext.c
- libraries/ghc-prim/cbits/popcnt.c → libraries/ghc-internal/cbits/popcnt.c
- + libraries/ghc-internal/cbits/vectorQuotRem.c
- libraries/ghc-prim/cbits/word2float.c → libraries/ghc-internal/cbits/word2float.c
- libraries/ghc-internal/codepages/MakeTable.hs
- libraries/ghc-internal/configure.ac
- libraries/ghc-internal/ghc-internal.buildinfo.in
- libraries/ghc-internal/ghc-internal.cabal → libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-bignum/GMP.rst → libraries/ghc-internal/gmp-backend.rst
- libraries/ghc-bignum/gmp/ghc-gmp.h → libraries/ghc-internal/gmp/ghc-gmp.h
- libraries/ghc-bignum/gmp/gmp-tarballs → libraries/ghc-internal/gmp/gmp-tarballs
- libraries/ghc-bignum/include/HsIntegerGmp.h.in → libraries/ghc-internal/include/HsIntegerGmp.h.in
- libraries/ghc-bignum/include/WordSize.h → libraries/ghc-internal/include/WordSize.h
- − libraries/ghc-internal/include/alignment.h
- libraries/ghc-internal/jsbits/base.js
- libraries/ghc-internal/src/GHC/Internal/ArrayArray.hs
- libraries/ghc-internal/src/GHC/Internal/Base.hs
- libraries/ghc-bignum/src/GHC/Num/Backend.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Backend.hs
- libraries/ghc-bignum/src/GHC/Num/Backend/Check.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Check.hs
- libraries/ghc-bignum/src/GHC/Num/Backend/FFI.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/FFI.hs
- libraries/ghc-bignum/src/GHC/Num/Backend/GMP.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/GMP.hs
- libraries/ghc-bignum/src/GHC/Num/Backend/Native.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Native.hs
- libraries/ghc-bignum/src/GHC/Num/Backend/Selected.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Selected.hs
- libraries/ghc-bignum/src/GHC/Num/BigNat.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/BigNat.hs
- libraries/ghc-bignum/src/GHC/Num/BigNat.hs-boot → libraries/ghc-internal/src/GHC/Internal/Bignum/BigNat.hs-boot
- libraries/ghc-bignum/src/GHC/Num/Integer.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs
- libraries/ghc-bignum/src/GHC/Num/Integer.hs-boot → libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs-boot
- libraries/ghc-bignum/src/GHC/Num/Natural.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs
- libraries/ghc-bignum/src/GHC/Num/Natural.hs-boot → libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs-boot
- libraries/ghc-bignum/src/GHC/Num/Primitives.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/Primitives.hs
- libraries/ghc-bignum/src/GHC/Num/WordArray.hs → libraries/ghc-internal/src/GHC/Internal/Bignum/WordArray.hs
- libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot
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- libraries/ghc-internal/src/GHC/Internal/Char.hs
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- libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs
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- libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs
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- libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Version.hs-boot
- libraries/ghc-prim/GHC/Debug.hs → libraries/ghc-internal/src/GHC/Internal/Debug.hs
- libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs
- libraries/ghc-internal/src/GHC/Internal/Encoding/UTF8.hs
- libraries/ghc-internal/src/GHC/Internal/Enum.hs
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- libraries/ghc-internal/src/GHC/Internal/LanguageExtensions.hs
- libraries/ghc-internal/src/GHC/Internal/List.hs
- libraries/ghc-prim/GHC/Magic.hs → libraries/ghc-internal/src/GHC/Internal/Magic.hs
- libraries/ghc-prim/GHC/Magic/Dict.hs → libraries/ghc-internal/src/GHC/Internal/Magic/Dict.hs
- libraries/ghc-internal/src/GHC/Internal/Maybe.hs
- libraries/ghc-internal/src/GHC/Internal/Natural.hs
- libraries/ghc-internal/src/GHC/Internal/Num.hs
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- libraries/ghc-internal/src/GHC/Internal/Numeric/Natural.hs
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- libraries/ghc-prim/GHC/Prim/Ext.hs → libraries/ghc-internal/src/GHC/Internal/Prim/Ext.hs
- libraries/ghc-prim/GHC/Prim/Panic.hs → libraries/ghc-internal/src/GHC/Internal/Prim/Panic.hs
- libraries/ghc-prim/GHC/Prim/PtrEq.hs → libraries/ghc-internal/src/GHC/Internal/Prim/PtrEq.hs
- libraries/ghc-internal/src/GHC/Internal/Profiling.hs
- libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc
- + libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc
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- libraries/ghc-internal/src/GHC/Internal/Show.hs
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- libraries/ghc-internal/src/GHC/Internal/Text/ParserCombinators/ReadP.hs
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- libraries/ghc-internal/src/GHC/Internal/TypeError.hs
- libraries/ghc-internal/src/GHC/Internal/TypeLits.hs
- libraries/ghc-internal/src/GHC/Internal/TypeLits/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/TypeNats.hs
- libraries/ghc-internal/src/GHC/Internal/TypeNats/Internal.hs
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- libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs
- libraries/ghc-internal/src/GHC/Internal/Unicode/Char/DerivedCoreProperties.hs
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- − libraries/ghc-prim/Setup.hs
- libraries/ghc-prim/changelog.md
- libraries/ghc-prim/ghc-prim.cabal
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- libraries/ghci/GHCi/CreateBCO.hs
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- libraries/hpc
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- libraries/os-string
- libraries/parsec
- libraries/process
- libraries/semaphore-compat
- libraries/stm
- libraries/template-haskell/Language/Haskell/TH/Lib.hs
- − libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs
- libraries/template-haskell/Language/Haskell/TH/Ppr.hs
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- libraries/template-haskell/Language/Haskell/TH/Quote.hs
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- libraries/template-haskell/changelog.md
- libraries/template-haskell/template-haskell.cabal.in
- libraries/template-haskell/tests/all.T
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- + libraries/template-haskell/tests/dataToCodeQUnit.stdout
- libraries/template-haskell/vendored-filepath/System/FilePath.hs
- libraries/terminfo
- libraries/text
- libraries/transformers
- libraries/unix
- linters/lint-codes/LintCodes/Static.hs
- linters/lint-codes/Main.hs
- llvm-targets
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- m4/fp_find_cxx_std_lib.m4
- m4/fp_settings.m4
- m4/fp_setup_project_version.m4
- m4/fp_setup_windows_toolchain.m4
- m4/fptools_happy.m4
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- m4/fptools_set_haskell_platform_vars.m4
- m4/ghc_adjustors_method.m4
- m4/ghc_llvm_target.m4
- m4/ghc_toolchain.m4
- nofib
- rts/Apply.cmm
- rts/AutoApply.h
- + rts/AutoApplyVecs.h
- rts/Capability.c
- rts/Capability.h
- rts/CheckUnload.c
- + rts/CheckVectorSupport.c
- + rts/CheckVectorSupport.h
- rts/CloneStack.c
- rts/Disassembler.c
- rts/Exception.cmm
- rts/ExecPage.c
- rts/HeapStackCheck.cmm
- rts/IOManager.c
- rts/IPE.c
- rts/Interpreter.c
- rts/Interpreter.h
- + rts/Jumps.h
- + rts/Jumps_D.cmm
- + rts/Jumps_V16.cmm
- + rts/Jumps_V32.cmm
- + rts/Jumps_V64.cmm
- rts/Linker.c
- rts/LinkerInternals.h
- rts/Prelude.h
- rts/PrimOps.cmm
- rts/Printer.c
- rts/ProfHeap.c
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- rts/Task.h
- rts/Threads.c
- rts/Ticky.c
- rts/Updates.h
- rts/adjustor/LibffiAdjustor.c
- rts/adjustor/NativeAmd64Asm.S
- rts/adjustor/NativeAmd64MingwAsm.S
- rts/adjustor/Nativei386.c
- rts/adjustor/Nativei386Asm.S
- rts/configure.ac
- rts/external-symbols.list.in
- rts/include/Cmm.h
- rts/include/HsFFI.h
- rts/include/RtsAPI.h
- rts/include/Stg.h
- rts/include/rts/Bytecodes.h
- rts/include/rts/Config.h
- rts/include/rts/Flags.h
- rts/include/rts/IPE.h
- rts/include/rts/Threads.h
- rts/include/rts/Ticky.h
- rts/include/rts/storage/HeapAlloc.h
- rts/include/rts/storage/InfoTables.h
- rts/include/stg/MachRegs/loongarch64.h
- rts/include/stg/MachRegs/ppc.h
- rts/include/stg/MachRegs/riscv64.h
- rts/include/stg/MachRegs/x86.h
- rts/include/stg/MiscClosures.h
- rts/include/stg/Prim.h
- rts/js/environment.js
- rts/js/mem.js
- rts/js/string.js
- rts/js/verify.js
- rts/linker/Elf.c
- rts/linker/ElfTypes.h
- rts/linker/M32Alloc.c
- rts/linker/MMap.c
- rts/linker/MMap.h
- rts/linker/MachO.c
- rts/linker/MachOTypes.h
- rts/linker/PEi386.c
- rts/linker/SymbolExtras.c
- rts/linker/SymbolExtras.h
- rts/linker/elf_got.c
- rts/linker/elf_plt.c
- rts/linker/elf_plt.h
- + rts/linker/elf_plt_riscv64.c
- + rts/linker/elf_plt_riscv64.h
- rts/linker/elf_reloc.c
- rts/linker/elf_reloc.h
- rts/linker/elf_reloc_aarch64.c
- rts/linker/elf_reloc_aarch64.h
- + rts/linker/elf_reloc_riscv64.c
- + rts/linker/elf_reloc_riscv64.h
- rts/linker/macho/plt.c
- rts/posix/Signals.c
- rts/posix/ticker/TimerFd.c
- rts/rts.cabal
- rts/sm/Compact.c
- rts/sm/Evac.c
- rts/sm/GC.c
- rts/sm/GCThread.h
- rts/sm/Sanity.c
- rts/wasm/JSFFI.c
- rts/wasm/StgRun.c
- rts/wasm/Wasm.S
- rts/wasm/blocker.cmm
- rts/wasm/jsval.cmm
- rts/wasm/scheduler.cmm
- rts/win32/libHSghc-prim.def
- rts/xxhash.h
- testsuite/config/ghc
- testsuite/driver/cpu_features.py
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- testsuite/driver/junit.py
- testsuite/driver/perf_notes.py
- testsuite/driver/runtests.py
- testsuite/driver/testglobals.py
- testsuite/driver/testlib.py
- testsuite/driver/testutil.py
- testsuite/ghc-config/ghc-config.hs
- testsuite/mk/boilerplate.mk
- testsuite/tests/ado/T13242a.stderr
- testsuite/tests/ado/T16135.stderr
- testsuite/tests/ado/all.T
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- testsuite/tests/annotations/should_fail/annfail10.stderr
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- testsuite/tests/bytecode/T24634/all.T
- testsuite/tests/bytecode/T24634/hello.c → testsuite/tests/bytecode/T24634/hello_c.c
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- testsuite/tests/codeGen/should_run/T16846.stderr
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- testsuite/tests/codeGen/should_run/T23146/all.T
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- testsuite/tests/codeGen/should_run/T5626.stderr
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- testsuite/tests/concurrent/should_run/T13330.stderr
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- testsuite/tests/typecheck/should_run/T21973a.stderr
- testsuite/tests/typecheck/should_run/T22510.stdout
- + testsuite/tests/typecheck/should_run/T25529.hs
- + testsuite/tests/typecheck/should_run/T25529.stdout
- testsuite/tests/typecheck/should_run/T9497a-run.stderr
- testsuite/tests/typecheck/should_run/T9497b-run.stderr
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- testsuite/tests/unboxedsums/T12711.stdout
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- testsuite/tests/unboxedsums/T20858b.stdout
- testsuite/tests/unboxedsums/all.T
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- testsuite/tests/unlifted-datatypes/should_run/UnlGadt1.stderr
- testsuite/tests/unlifted-datatypes/should_run/all.T
- testsuite/tests/unsatisfiable/T14339_Unsat.stderr
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- testsuite/tests/vdq-rta/should_compile/T22326_th_pprint1.stderr
- testsuite/tests/vdq-rta/should_compile/T23739_th_pprint1.stderr
- + testsuite/tests/vdq-rta/should_compile/T24159_th_type_syntax.hs
- + testsuite/tests/vdq-rta/should_compile/T24159_type_syntax.hs
- + testsuite/tests/vdq-rta/should_compile/T24159_viewpat.hs
- + testsuite/tests/vdq-rta/should_compile/T24159_viewpat.stderr
- testsuite/tests/vdq-rta/should_compile/all.T
- testsuite/tests/vdq-rta/should_fail/T22326_fail_app.stderr
- testsuite/tests/vdq-rta/should_fail/T22326_fail_ext1.stderr
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- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_1.hs
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- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_2.hs
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- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_3.hs
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- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_4.hs
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- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_5.hs
- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_5.stderr
- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_6.hs
- + testsuite/tests/vdq-rta/should_fail/T24159_pat_parse_error_6.stderr
- + testsuite/tests/vdq-rta/should_fail/T24159_type_syntax_rn_fail.hs
- + testsuite/tests/vdq-rta/should_fail/T24159_type_syntax_rn_fail.stderr
- + testsuite/tests/vdq-rta/should_fail/T24159_type_syntax_tc_fail.hs
- + testsuite/tests/vdq-rta/should_fail/T24159_type_syntax_tc_fail.stderr
- + testsuite/tests/vdq-rta/should_fail/T24159_type_syntax_th_fail.script
- + testsuite/tests/vdq-rta/should_fail/T24159_type_syntax_th_fail.stderr
- testsuite/tests/vdq-rta/should_fail/all.T
- testsuite/tests/warnings/should_compile/DerivingTypeable.stderr
- + testsuite/tests/warnings/should_compile/SpecMultipleTys.hs
- + testsuite/tests/warnings/should_compile/SpecMultipleTys.stderr
- testsuite/tests/warnings/should_compile/T11077.hs
- testsuite/tests/warnings/should_compile/T11077.stderr
- testsuite/tests/warnings/should_compile/T15460.stderr-ws-32
- testsuite/tests/warnings/should_compile/T15460.stderr-ws-64
- testsuite/tests/warnings/should_compile/T19296.stderr
- testsuite/tests/warnings/should_compile/T24396.stderr
- testsuite/tests/warnings/should_compile/WarnNoncanonical.stderr
- testsuite/tests/warnings/should_compile/all.T
- + testsuite/tests/warnings/should_fail/SpecEMultipleTys.hs
- + testsuite/tests/warnings/should_fail/SpecEMultipleTys.stderr
- testsuite/tests/warnings/should_fail/all.T
- testsuite/tests/wasm/should_run/control-flow/LoadCmmGroup.hs
- testsuite/tests/wasm/should_run/control-flow/README.md
- testsuite/tests/wasm/should_run/control-flow/WasmControlFlow.hs
- − testsuite/tests/wasm/should_run/control-flow/WasmControlFlow.stdout
- testsuite/tests/wasm/should_run/control-flow/all.T
- testsuite/tests/wcompat-warnings/Template.hs
- − testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr
- utils/check-exact/ExactPrint.hs
- − utils/check-exact/Lookup.hs
- utils/check-exact/Main.hs
- utils/check-exact/Parsers.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Types.hs
- utils/check-exact/Utils.hs
- utils/check-exact/check-exact.cabal
- utils/check-ppr/Main.hs
- utils/deriveConstants/Main.hs
- − utils/deriveConstants/Makefile
- utils/dump-decls/Main.hs
- utils/genapply/Main.hs
- utils/genprimopcode/Lexer.x
- utils/genprimopcode/Main.hs
- − utils/genprimopcode/Makefile
- utils/genprimopcode/Parser.y
- utils/genprimopcode/ParserM.hs
- utils/genprimopcode/Syntax.hs
- utils/ghc-pkg/Main.hs
- − utils/ghc-pkg/Makefile
- − utils/ghc-pkg/ghc-pkg.wrapper
- utils/ghc-toolchain/exe/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/ParseTriple.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cpp.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs
- utils/haddock/.gitignore
- utils/haddock/.readthedocs.yaml
- utils/haddock/CHANGES.md
- utils/haddock/doc/common-errors.rst
- utils/haddock/doc/conf.py
- utils/haddock/doc/invoking.rst
- utils/haddock/doc/markup.rst
- + utils/haddock/doc/requirements.txt
- + utils/haddock/haddock-api/compat/posix/Haddock/Compat.hs
- + utils/haddock/haddock-api/compat/windows/Haddock/Compat.hs
- utils/haddock/haddock-api/haddock-api.cabal
- utils/haddock/haddock-api/resources/html/Linuwial.std-theme/linuwial.css
- utils/haddock/haddock-api/src/Haddock.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hoogle.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Names.hs
- utils/haddock/haddock-api/src/Haddock/Convert.hs
- utils/haddock/haddock-api/src/Haddock/GhcUtils.hs
- utils/haddock/haddock-api/src/Haddock/Interface.hs
- utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Create.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Json.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs
- utils/haddock/haddock-api/src/Haddock/Interface/RenameType.hs
- utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs
- utils/haddock/haddock-api/src/Haddock/Options.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs
- utils/haddock/haddock-api/src/Haddock/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Utils/Json.hs
- utils/haddock/haddock-api/src/Haddock/Version.hs
- utils/haddock/haddock-library/haddock-library.cabal
- utils/haddock/haddock-library/test/Documentation/Haddock/Parser/UtilSpec.hs
- utils/haddock/haddock-test/haddock-test.cabal
- utils/haddock/haddock-test/src/Test/Haddock.hs
- utils/haddock/haddock-test/src/Test/Haddock/Config.hs
- utils/haddock/haddock-test/src/Test/Haddock/Xhtml.hs
- utils/haddock/haddock.cabal
- − utils/haddock/haddock.wrapper
- utils/haddock/hoogle-test/Main.hs
- utils/haddock/html-test/Main.hs
- utils/haddock/html-test/ref/Bug1004.html
- utils/haddock/html-test/ref/Bug310.html
- utils/haddock/html-test/ref/Bug548.html
- utils/haddock/html-test/ref/Bug923.html
- utils/haddock/html-test/ref/BundledPatterns.html
- utils/haddock/html-test/ref/BundledPatterns2.html
- utils/haddock/html-test/ref/Instances.html
- utils/haddock/html-test/ref/LinearTypes.html
- utils/haddock/html-test/src/Bug310.hs
- utils/haddock/html-test/src/LinearTypes.hs
- utils/haddock/hypsrc-test/Main.hs
- utils/haddock/latex-test/Main.hs
- utils/haddock/latex-test/ref/ConstructorArgs/ConstructorArgs.tex
- utils/haddock/latex-test/ref/DefaultSignatures/DefaultSignatures.tex
- utils/haddock/latex-test/ref/GadtConstructorArgs/GadtConstructorArgs.tex
- utils/haddock/latex-test/ref/LinearTypes/LinearTypes.tex
- utils/haddock/latex-test/ref/TypeFamilies3/TypeFamilies3.tex
- utils/haddock/latex-test/src/LinearTypes/LinearTypes.hs
- − utils/hp2ps/Makefile
- utils/hp2ps/Utilities.c
- − utils/hp2ps/hp2ps.wrapper
- utils/hsc2hs
- − utils/iserv/Makefile
- utils/iserv/cbits/iservmain.c
- + utils/jsffi/dyld.mjs
- utils/jsffi/post-link.mjs
- utils/jsffi/prelude.js → utils/jsffi/prelude.mjs
- utils/llvm-targets/gen-data-layout.sh
- − utils/remote-iserv/Makefile
- − utils/runghc/Makefile
- − utils/runghc/runghc.wrapper
- − utils/unlit/Makefile
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c1fa2395aedc5789cb6ff7f20bce79…
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[Git][ghc/ghc][wip/andreask/fold_tag_to_enum] Simplifier: Constant fold invald tagToEnum# calls to bottom expr.
by Andreas Klebinger (＠AndreasK) 21 Apr '25
by Andreas Klebinger (＠AndreasK) 21 Apr '25
21 Apr '25
Andreas Klebinger pushed to branch wip/andreask/fold_tag_to_enum at Glasgow Haskell Compiler / GHC
Commits:
c53726a5 by Andreas Klebinger at 2025-04-21T13:29:28+02:00
Simplifier: Constant fold invald tagToEnum# calls to bottom expr.
When applying tagToEnum# to a out-of-range value it's best to simply
constant fold it to a bottom expression. That potentially allows more
dead code elimination and makes debugging easier.
Fixes #25976
- - - - -
3 changed files:
- compiler/GHC/Core/Opt/ConstantFold.hs
- + testsuite/tests/simplCore/should_compile/T25976.hs
- testsuite/tests/simplCore/should_compile/all.T
Changes:
=====================================
compiler/GHC/Core/Opt/ConstantFold.hs
=====================================
@@ -69,7 +69,6 @@ import GHC.Cmm.MachOp ( FMASign(..) )
import GHC.Cmm.Type ( Width(..) )
import GHC.Data.FastString
-import GHC.Data.Maybe ( orElse )
import GHC.Utils.Outputable
import GHC.Utils.Misc
@@ -1997,6 +1996,13 @@ because we don't expect the user to call tagToEnum# at all; we merely
generate calls in derived instances of Enum. So we compromise: a
rewrite rule rewrites a bad instance of tagToEnum# to an error call,
and emits a warning.
+
+We also do something similar if we can see that the argument of tagToEnum is out
+of bounds, e.g. `tagToEnum# 99# :: Bool`.
+Replacing this with an error expression is better for two reasons:
+* It allow us to eliminate more dead code in cases like `case tagToEnum# 99# :: Bool of ...`
+* Should we actually end up executing the relevant code at runtime the user will
+ see a meaningful error message, instead of a segfault or incorrect result.
-}
tagToEnumRule :: RuleM CoreExpr
@@ -2008,9 +2014,13 @@ tagToEnumRule = do
Just (tycon, tc_args) | isEnumerationTyCon tycon -> do
let tag = fromInteger i
correct_tag dc = (dataConTagZ dc) == tag
- (dc:rest) <- return $ filter correct_tag (tyConDataCons_maybe tycon `orElse` [])
- massert (null rest)
- return $ mkTyApps (Var (dataConWorkId dc)) tc_args
+ Just dataCons <- pure $ tyConDataCons_maybe tycon
+ case filter correct_tag dataCons of
+ (dc:rest) -> do
+ massert (null rest)
+ pure $ mkTyApps (Var (dataConWorkId dc)) tc_args
+ -- Literal is out of range, e.g. tagToEnum @Bool #4
+ [] -> pure $ mkImpossibleExpr ty "tagToEnum: Argument out of range"
-- See Note [tagToEnum#]
_ -> warnPprTrace True "tagToEnum# on non-enumeration type" (ppr ty) $
=====================================
testsuite/tests/simplCore/should_compile/T25976.hs
=====================================
@@ -0,0 +1,10 @@
+{-# LANGUAGE MagicHash #-}
+
+module T25976 where
+
+import GHC.PrimOps (tagToEnum#)
+
+-- Spoiler - it's all dead code since tagToEnum 3# is undefined
+main = case (tagToEnum# 4# :: Bool) of
+ True -> print "Dead Code"
+ False -> print "Dead Code"
\ No newline at end of file
=====================================
testsuite/tests/simplCore/should_compile/all.T
=====================================
@@ -541,3 +541,5 @@ test('T25883', normal, compile_grep_core, [''])
test('T25883b', normal, compile_grep_core, [''])
test('T25883c', normal, compile_grep_core, [''])
test('T25883d', [extra_files(['T25883d_import.hs'])], multimod_compile_filter, ['T25883d', '-O -ddump-simpl -dno-typeable-binds -dsuppress-all -dsuppress-uniques', r'grep -e "y ="'])
+
+test('T25976', [grep_errmsg('Dead Code')], compile, ['-O -ddump-simpl -dsuppress-uniques -dno-typeable-binds'])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c53726a5cb85254102b22a766b4e130…
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[Git][ghc/ghc][wip/T24603] Bisect attempt for ghc js backend
by Serge S. Gulin (＠gulin.serge) 21 Apr '25
by Serge S. Gulin (＠gulin.serge) 21 Apr '25
21 Apr '25
Serge S. Gulin pushed to branch wip/T24603 at Glasgow Haskell Compiler / GHC
Commits:
d26b1d82 by Serge S. Gulin at 2025-04-21T14:38:43+03:00
Bisect attempt for ghc js backend
submodule
- - - - -
1 changed file:
- libraries/Cabal
Changes:
=====================================
libraries/Cabal
=====================================
@@ -1 +1 @@
-Subproject commit 703582f80f6d7f0c914ef4b885affcfc7b7b6ec8
+Subproject commit 4edd5c43d962d410102055398f6b55a973db69ef
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d26b1d8274fa20d808210b2865d4a5d…
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[Git][ghc/ghc][wip/andreask/fold_tag_to_enum] 6 commits: Add name for -Wunusable-unpack-pragmas
by Andreas Klebinger (＠AndreasK) 21 Apr '25
by Andreas Klebinger (＠AndreasK) 21 Apr '25
21 Apr '25
Andreas Klebinger pushed to branch wip/andreask/fold_tag_to_enum at Glasgow Haskell Compiler / GHC
Commits:
e2f2f9d0 by Vladislav Zavialov at 2025-04-20T10:53:39-04:00
Add name for -Wunusable-unpack-pragmas
This warning had no name or flag and was triggered unconditionally.
Now it is part of -Wdefault.
In GHC.Tc.TyCl.tcTyClGroupsPass's strict mode, we now have to
force-enable this warning to ensure that detection of flawed groups
continues to work even if the user disables the warning with the
-Wno-unusable-unpack-pragmas option. Test case: T3990c
Also, the misnamed BackpackUnpackAbstractType is now called
UnusableUnpackPragma.
- - - - -
6caa6508 by Adam Gundry at 2025-04-20T10:54:22-04:00
Fix specialisation of incoherent instances (fixes #25883)
GHC normally assumes that class constraints are canonical, meaning that
the specialiser is allowed to replace one dictionary argument with another
provided that they have the same type. The `-fno-specialise-incoherents`
flag alters INCOHERENT instance definitions so that they will prevent
specialisation in some cases, by inserting `nospec`.
This commit fixes a bug in 7124e4ad76d98f1fc246ada4fd7bf64413ff2f2e, which
treated some INCOHERENT instance matches as if `-fno-specialise-incoherents`
was in effect, thereby unnecessarily preventing specialisation. In addition
it updates the relevant `Note [Rules for instance lookup]` and adds a new
`Note [Canonicity for incoherent matches]`.
- - - - -
0426fd6c by Adam Gundry at 2025-04-20T10:54:23-04:00
Add regression test for #23429
- - - - -
eec96527 by Adam Gundry at 2025-04-20T10:54:23-04:00
user's guide: update specification of overlapping/incoherent instances
The description of the instance resolution algorithm in the user's
guide was slightly out of date, because it mentioned in-scope given
constraints only at the end, whereas the implementation checks for
their presence before any of the other steps.
This also adds a warning to the user's guide about the impact of
incoherent instances on specialisation, and more clearly documents
some of the other effects of `-XIncoherentInstances`.
- - - - -
a00eeaec by Matthew Craven at 2025-04-20T10:55:03-04:00
Fix bytecode generation for `tagToEnum# <LITERAL>`
Fixes #25975.
- - - - -
36d0f34f by Andreas Klebinger at 2025-04-21T13:13:20+02:00
Simplifier: Constant fold invald tagToEnum# calls to bottom expr.
When applying tagToEnum# to a out-of-range value it's best to simply
constant fold it to a bottom expression. That potentially allows more
dead code elimination and makes debugging easier.
Fixes #25976
- - - - -
42 changed files:
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Types/Error/Codes.hs
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/using-warnings.rst
- + testsuite/tests/bytecode/T25975.hs
- + testsuite/tests/bytecode/T25975.stdout
- testsuite/tests/bytecode/all.T
- testsuite/tests/simplCore/should_compile/Makefile
- testsuite/tests/simplCore/should_compile/T23307c.stderr
- + testsuite/tests/simplCore/should_compile/T25883.hs
- + testsuite/tests/simplCore/should_compile/T25883.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883b.hs
- + testsuite/tests/simplCore/should_compile/T25883b.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883c.hs
- + testsuite/tests/simplCore/should_compile/T25883c.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883d.hs
- + testsuite/tests/simplCore/should_compile/T25883d.stderr
- + testsuite/tests/simplCore/should_compile/T25883d_import.hs
- + testsuite/tests/simplCore/should_compile/T25976.hs
- + testsuite/tests/simplCore/should_compile/T3990c.hs
- + testsuite/tests/simplCore/should_compile/T3990c.stdout
- testsuite/tests/simplCore/should_compile/all.T
- testsuite/tests/simplCore/should_fail/T25672.stderr
- + testsuite/tests/simplCore/should_run/T23429.hs
- + testsuite/tests/simplCore/should_run/T23429.stdout
- testsuite/tests/simplCore/should_run/all.T
- testsuite/tests/typecheck/should_compile/T7050.stderr
- testsuite/tests/typecheck/should_fail/T3966.stderr
- + testsuite/tests/typecheck/should_fail/T3966b.hs
- + testsuite/tests/typecheck/should_fail/T3966b.stderr
- testsuite/tests/typecheck/should_fail/all.T
- testsuite/tests/unboxedsums/unpack_sums_5.stderr
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e7d7437272f61c322af2d6983ace86…
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[Git][ghc/ghc][wip/T24603] 6 commits: Add name for -Wunusable-unpack-pragmas
by Serge S. Gulin (＠gulin.serge) 21 Apr '25
by Serge S. Gulin (＠gulin.serge) 21 Apr '25
21 Apr '25
Serge S. Gulin pushed to branch wip/T24603 at Glasgow Haskell Compiler / GHC
Commits:
e2f2f9d0 by Vladislav Zavialov at 2025-04-20T10:53:39-04:00
Add name for -Wunusable-unpack-pragmas
This warning had no name or flag and was triggered unconditionally.
Now it is part of -Wdefault.
In GHC.Tc.TyCl.tcTyClGroupsPass's strict mode, we now have to
force-enable this warning to ensure that detection of flawed groups
continues to work even if the user disables the warning with the
-Wno-unusable-unpack-pragmas option. Test case: T3990c
Also, the misnamed BackpackUnpackAbstractType is now called
UnusableUnpackPragma.
- - - - -
6caa6508 by Adam Gundry at 2025-04-20T10:54:22-04:00
Fix specialisation of incoherent instances (fixes #25883)
GHC normally assumes that class constraints are canonical, meaning that
the specialiser is allowed to replace one dictionary argument with another
provided that they have the same type. The `-fno-specialise-incoherents`
flag alters INCOHERENT instance definitions so that they will prevent
specialisation in some cases, by inserting `nospec`.
This commit fixes a bug in 7124e4ad76d98f1fc246ada4fd7bf64413ff2f2e, which
treated some INCOHERENT instance matches as if `-fno-specialise-incoherents`
was in effect, thereby unnecessarily preventing specialisation. In addition
it updates the relevant `Note [Rules for instance lookup]` and adds a new
`Note [Canonicity for incoherent matches]`.
- - - - -
0426fd6c by Adam Gundry at 2025-04-20T10:54:23-04:00
Add regression test for #23429
- - - - -
eec96527 by Adam Gundry at 2025-04-20T10:54:23-04:00
user's guide: update specification of overlapping/incoherent instances
The description of the instance resolution algorithm in the user's
guide was slightly out of date, because it mentioned in-scope given
constraints only at the end, whereas the implementation checks for
their presence before any of the other steps.
This also adds a warning to the user's guide about the impact of
incoherent instances on specialisation, and more clearly documents
some of the other effects of `-XIncoherentInstances`.
- - - - -
a00eeaec by Matthew Craven at 2025-04-20T10:55:03-04:00
Fix bytecode generation for `tagToEnum# <LITERAL>`
Fixes #25975.
- - - - -
dfb4c44c by Serge S. Gulin at 2025-04-21T10:24:53+03:00
Support for ARM64 Windows (LLVM-enabled) (fixes #24603)
submodule
Co-authored-by: Cheng Shao <terrorjack(a)type.dance>
Co-authored-by: Dmitrii Egorov <egorov.d.i(a)icloud.com>
Co-authored-by: Andrei Borzenkov <root(a)sandwitch.dev>
- - - - -
72 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/hello.hs
- .gitlab/jobs.yaml
- compiler/CodeGen.Platform.h
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Linear/AArch64.hs
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Platform/Regs.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Types/Error/Codes.hs
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/using-warnings.rst
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Rules/BinaryDist.hs
- libraries/Cabal
- libraries/Win32
- libraries/base/src/System/CPUTime/Windows.hsc
- libraries/base/tests/perf/encodingAllocations.hs
- libraries/directory
- libraries/ghc-internal/jsbits/errno.js
- libraries/haskeline
- libraries/process
- libraries/unix
- llvm-targets
- m4/fp_cc_supports_target.m4
- m4/fptools_set_platform_vars.m4
- m4/ghc_tables_next_to_code.m4
- rts/StgCRun.c
- rts/linker/PEi386.c
- rts/win32/veh_excn.c
- + testsuite/tests/bytecode/T25975.hs
- + testsuite/tests/bytecode/T25975.stdout
- testsuite/tests/bytecode/all.T
- testsuite/tests/simplCore/should_compile/Makefile
- testsuite/tests/simplCore/should_compile/T23307c.stderr
- + testsuite/tests/simplCore/should_compile/T25883.hs
- + testsuite/tests/simplCore/should_compile/T25883.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883b.hs
- + testsuite/tests/simplCore/should_compile/T25883b.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883c.hs
- + testsuite/tests/simplCore/should_compile/T25883c.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883d.hs
- + testsuite/tests/simplCore/should_compile/T25883d.stderr
- + testsuite/tests/simplCore/should_compile/T25883d_import.hs
- + testsuite/tests/simplCore/should_compile/T3990c.hs
- + testsuite/tests/simplCore/should_compile/T3990c.stdout
- testsuite/tests/simplCore/should_compile/all.T
- testsuite/tests/simplCore/should_fail/T25672.stderr
- + testsuite/tests/simplCore/should_run/T23429.hs
- + testsuite/tests/simplCore/should_run/T23429.stdout
- testsuite/tests/simplCore/should_run/all.T
- testsuite/tests/typecheck/should_compile/T7050.stderr
- testsuite/tests/typecheck/should_fail/T3966.stderr
- + testsuite/tests/typecheck/should_fail/T3966b.hs
- + testsuite/tests/typecheck/should_fail/T3966b.stderr
- testsuite/tests/typecheck/should_fail/all.T
- testsuite/tests/unboxedsums/unpack_sums_5.stderr
- utils/ghc-toolchain/exe/Main.hs
- utils/hsc2hs
- utils/llvm-targets/gen-data-layout.sh
The diff was not included because it is too large.
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[Git][ghc/ghc][wip/spj-apporv-Oct24] ignore ds warnings originating from gen locations
by Apoorv Ingle (＠ani) 20 Apr '25
by Apoorv Ingle (＠ani) 20 Apr '25
20 Apr '25
Apoorv Ingle pushed to branch wip/spj-apporv-Oct24 at Glasgow Haskell Compiler / GHC
Commits:
ec95eca2 by Apoorv Ingle at 2025-04-20T20:58:34-05:00
ignore ds warnings originating from gen locations
- - - - -
1 changed file:
- compiler/GHC/HsToCore/Pmc.hs
Changes:
=====================================
compiler/GHC/HsToCore/Pmc.hs
=====================================
@@ -51,7 +51,7 @@ import GHC.HsToCore.Pmc.Utils
import GHC.HsToCore.Pmc.Desugar
import GHC.HsToCore.Pmc.Check
import GHC.HsToCore.Pmc.Solver
-import GHC.Types.Basic (Origin(..), isDoExpansionGenerated)
+import GHC.Types.Basic (Origin(..))
import GHC.Core
import GHC.Driver.DynFlags
import GHC.Hs
@@ -68,7 +68,7 @@ import GHC.HsToCore.Monad
import GHC.Data.Bag
import GHC.Data.OrdList
-import Control.Monad (when, unless, forM_)
+import Control.Monad (when, forM_)
import qualified Data.Semigroup as Semi
import Data.List.NonEmpty ( NonEmpty(..) )
import qualified Data.List.NonEmpty as NE
@@ -189,12 +189,11 @@ pmcMatches origin ctxt vars matches = {-# SCC "pmcMatches" #-} do
Just matches -> do
matches <- {-# SCC "desugarMatches" #-}
noCheckDs $ desugarMatches vars matches
- tracePm "desugared matches" (ppr matches)
+ -- tracePm "desugared matches" (ppr matches)
result <- {-# SCC "checkMatchGroup" #-}
unCA (checkMatchGroup matches) missing
tracePm "}: " (ppr (cr_uncov result))
- unless (isDoExpansionGenerated origin) -- Do expansion generated code shouldn't emit overlapping warnings
- ({-# SCC "formatReportWarnings" #-}
+ ({-# SCC "formatReportWarnings" #-}
formatReportWarnings ReportMatchGroup ctxt vars result)
return (NE.toList (ldiMatchGroup (cr_ret result)))
@@ -585,18 +584,18 @@ reportWarnings dflags report_mode (DsMatchContext kind loc) vars
approx = precision == Approximate
when (approx && (exists_u || exists_i)) $
- putSrcSpanDs loc (diagnosticDs (DsMaxPmCheckModelsReached (maxPmCheckModels dflags)))
+ maybePutSrcSpanDs loc (diagnosticDs (DsMaxPmCheckModelsReached (maxPmCheckModels dflags)))
when exists_b $ forM_ redundant_bangs $ \(SrcInfo (L l q)) ->
- putSrcSpanDs l (diagnosticDs (DsRedundantBangPatterns kind q))
+ maybePutSrcSpanDs l (diagnosticDs (DsRedundantBangPatterns kind q))
when exists_r $ forM_ redundant_rhss $ \(SrcInfo (L l q)) ->
- putSrcSpanDs l (diagnosticDs (DsOverlappingPatterns kind q))
+ maybePutSrcSpanDs l (diagnosticDs (DsOverlappingPatterns kind q))
when exists_i $ forM_ inaccessible_rhss $ \(SrcInfo (L l q)) ->
- putSrcSpanDs l (diagnosticDs (DsInaccessibleRhs kind q))
+ maybePutSrcSpanDs l (diagnosticDs (DsInaccessibleRhs kind q))
when exists_u $
- putSrcSpanDs loc (diagnosticDs (DsNonExhaustivePatterns kind check_type maxPatterns vars unc_examples))
+ maybePutSrcSpanDs loc (diagnosticDs (DsNonExhaustivePatterns kind check_type maxPatterns vars unc_examples))
where
flag_i = overlapping dflags kind
flag_u = exhaustive dflags kind
@@ -608,6 +607,15 @@ reportWarnings dflags report_mode (DsMatchContext kind loc) vars
maxPatterns = maxUncoveredPatterns dflags
+ -- we only want to report warnings for source constructs and not compiler generated constructors
+ -- c.f. Typeable1
+ maybePutSrcSpanDs :: SrcSpan -> DsM () -> DsM ()
+ maybePutSrcSpanDs l thing_inside =
+ if isGeneratedSrcSpan l
+ then return ()
+ else putSrcSpanDs l thing_inside
+
+
getNFirstUncovered :: GenerateInhabitingPatternsMode -> [Id] -> Int -> Nablas -> DsM [Nabla]
getNFirstUncovered mode vars n (MkNablas nablas) = go n (bagToList nablas)
where
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ec95eca2eaee4b7f1240b24270b9c0a…
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Simon Peyton Jones pushed to branch wip/T23109a at Glasgow Haskell Compiler / GHC
Commits:
6bee78af by Simon Peyton Jones at 2025-04-20T23:02:40+01:00
Wibble SetLevels
- - - - -
1 changed file:
- compiler/GHC/Core/Opt/SetLevels.hs
Changes:
=====================================
compiler/GHC/Core/Opt/SetLevels.hs
=====================================
@@ -708,9 +708,15 @@ lvlMFE env strict_ctxt ann_expr
-- See Note [Floating to the top]
saves_alloc = isTopLvl dest_lvl
+ && (escapes_value_lam || floatConsts env)
+ -- Always float allocation out of a value lambda
+ -- if it gets to top level
+ && (not strict_ctxt || is_hnf || is_bot_lam)
+{-
&& ( (floatConsts env &&
(not strict_ctxt || is_hnf)) -- (FT1) and (FT2)
|| (is_bot_lam && escapes_value_lam)) -- (FT3)
+-}
hasFreeJoin :: LevelEnv -> DVarSet -> Bool
-- Has a free join point which is not being floated to top level.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/6bee78af5db225c26bb21254bc9cc9f…
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[Git][ghc/ghc][wip/T25965] 11 commits: Refactor Handling of Multiple Default Declarations
by Simon Peyton Jones (＠simonpj) 20 Apr '25
by Simon Peyton Jones (＠simonpj) 20 Apr '25
20 Apr '25
Simon Peyton Jones pushed to branch wip/T25965 at Glasgow Haskell Compiler / GHC
Commits:
e0f3ff11 by Patrick at 2025-04-17T04:31:12-04:00
Refactor Handling of Multiple Default Declarations
Fixes: #25912, #25914, #25934
Previously, GHC discarded all loaded defaults (tcg_default) when local
defaults were encountered during typechecking. According to the
exportable-named-default proposal (sections 2.4.2 and 2.4.3), local
defaults should be merged into tcg_default, retaining any defaults
already present while overriding where necessary.
Key Changes:
* Introduce DefaultProvenance to track the origin of default declarations
(local, imported, or built-in), replacing the original cd_module
in ClassDefaults with cd_provenance :: DefaultProvenance.
* Rename tcDefaults to tcDefaultDecls, limiting its responsibility to only
converting renamed class defaults into ClassDefaults.
* Add extendDefaultEnvWithLocalDefaults to merge local defaults into the
environment, with proper duplication checks:
- Duplicate local defaults for a class trigger an error.
- Local defaults override imported or built-in defaults.
* Update and add related notes: Note [Builtin class defaults],
Note [DefaultProvenance].
* Add regression tests: T25912, T25914, T25934.
Thanks sam and simon for the help on this patch.
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
386f1854 by Teo Camarasu at 2025-04-17T04:31:55-04:00
template-haskell: Remove `addrToByteArrayName` and `addrToByteArray`
These were part of the implementation of the `Lift ByteArray` instance and were errornously exported because this module lacked an explicit export list. They have no usages on Hackage.
Resolves #24782
- - - - -
b96e2f77 by Sylvain Henry at 2025-04-18T20:46:33-04:00
RTS: remove target info and fix host info (#24058)
The RTS isn't a compiler, hence it doesn't have a target and we remove
the reported target info displayed by "+RTS --info". We also fix the
host info displayed by "+RTS --info": the host of the RTS is the
RTS-building compiler's target, not the compiler's host (wrong when
doing cross-compilation).
- - - - -
6d9965f4 by Sylvain Henry at 2025-04-18T20:46:33-04:00
RTS: remove build info
As per the discussion in !13967, there is no reason to tag the RTS with
information about the build platform.
- - - - -
d52e9b3f by Vladislav Zavialov at 2025-04-18T20:47:15-04:00
Diagnostics: remove the KindMismatch constructor (#25957)
The KindMismatch constructor was only used as an intermediate
representation in pretty-printing.
Its removal addresses a problem detected by the "codes" test case:
[GHC-89223] is untested (constructor = KindMismatch)
In a concious deviation from the usual procedure, the error code
GHC-89223 is removed entirely rather than marked as Outdated.
The reason is that it never was user-facing in the first place.
- - - - -
e2f2f9d0 by Vladislav Zavialov at 2025-04-20T10:53:39-04:00
Add name for -Wunusable-unpack-pragmas
This warning had no name or flag and was triggered unconditionally.
Now it is part of -Wdefault.
In GHC.Tc.TyCl.tcTyClGroupsPass's strict mode, we now have to
force-enable this warning to ensure that detection of flawed groups
continues to work even if the user disables the warning with the
-Wno-unusable-unpack-pragmas option. Test case: T3990c
Also, the misnamed BackpackUnpackAbstractType is now called
UnusableUnpackPragma.
- - - - -
6caa6508 by Adam Gundry at 2025-04-20T10:54:22-04:00
Fix specialisation of incoherent instances (fixes #25883)
GHC normally assumes that class constraints are canonical, meaning that
the specialiser is allowed to replace one dictionary argument with another
provided that they have the same type. The `-fno-specialise-incoherents`
flag alters INCOHERENT instance definitions so that they will prevent
specialisation in some cases, by inserting `nospec`.
This commit fixes a bug in 7124e4ad76d98f1fc246ada4fd7bf64413ff2f2e, which
treated some INCOHERENT instance matches as if `-fno-specialise-incoherents`
was in effect, thereby unnecessarily preventing specialisation. In addition
it updates the relevant `Note [Rules for instance lookup]` and adds a new
`Note [Canonicity for incoherent matches]`.
- - - - -
0426fd6c by Adam Gundry at 2025-04-20T10:54:23-04:00
Add regression test for #23429
- - - - -
eec96527 by Adam Gundry at 2025-04-20T10:54:23-04:00
user's guide: update specification of overlapping/incoherent instances
The description of the instance resolution algorithm in the user's
guide was slightly out of date, because it mentioned in-scope given
constraints only at the end, whereas the implementation checks for
their presence before any of the other steps.
This also adds a warning to the user's guide about the impact of
incoherent instances on specialisation, and more clearly documents
some of the other effects of `-XIncoherentInstances`.
- - - - -
a00eeaec by Matthew Craven at 2025-04-20T10:55:03-04:00
Fix bytecode generation for `tagToEnum# <LITERAL>`
Fixes #25975.
- - - - -
5c976307 by Simon Peyton Jones at 2025-04-20T22:39:35+01:00
Fix infelicities in the Specialiser
On the way to #23109 (unary classes) I discovered some infelicities
(or maybe tiny bugs, I forget) in the type-class specialiser.
I also tripped over #25965, an outright bug in the rule matcher
Specifically:
* Refactor: I enhanced `wantCallsFor`, whih previously always said
`True`, to discard calls of class-ops, data constructors etc. This is
a bit more efficient; and it means we don't need to worry about
filtering them out later.
* Fix: I tidied up some tricky logic that eliminated redundant
specialisations. It wasn't working correctly. See the expanded
Note [Specialisations already covered], and
(MP3) in Note [Specialising polymorphic dictionaries].
See also the new top-level `alreadyCovered`
function, which now goes via `GHC.Core.Rules.ruleLhsIsMoreSpecific`
I also added a useful Note [The (CI-KEY) invariant]
* Fix #25965: fixed a tricky bug in the `go_fam_fam` in
`GHC.Core.Unify.uVarOrFam`, which allows matching to succeed
without binding all type varibles.
I enhanced Note [Apartness and type families] some more
* #25703. This ticket "just works" with -fpolymorphic-specialisation;
but I was surprised that it worked! In this MR I added documentation
to Note [Interesting dictionary arguments] to explain; and tests to
ensure it stays fixed.
- - - - -
73 changed files:
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/DefaultEnv.hs
- compiler/GHC/Types/Error/Codes.hs
- configure.ac
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/using-warnings.rst
- hadrian/src/Settings/Packages.hs
- libraries/template-haskell/Language/Haskell/TH/Syntax.hs
- libraries/template-haskell/changelog.md
- rts/RtsUtils.c
- testsuite/ghc-config/ghc-config.hs
- + testsuite/tests/bytecode/T25975.hs
- + testsuite/tests/bytecode/T25975.stdout
- testsuite/tests/bytecode/all.T
- + testsuite/tests/default/T25912.hs
- + testsuite/tests/default/T25912.stdout
- + testsuite/tests/default/T25912_helper.hs
- + testsuite/tests/default/T25914.hs
- + testsuite/tests/default/T25934.hs
- testsuite/tests/default/all.T
- testsuite/tests/default/default-fail03.stderr
- testsuite/tests/diagnostic-codes/codes.stdout
- testsuite/tests/interface-stability/template-haskell-exports.stdout
- testsuite/tests/linters/notes.stdout
- testsuite/tests/module/mod58.stderr
- testsuite/tests/simplCore/should_compile/Makefile
- testsuite/tests/simplCore/should_compile/T23307c.stderr
- + testsuite/tests/simplCore/should_compile/T25703.hs
- + testsuite/tests/simplCore/should_compile/T25703.stderr
- + testsuite/tests/simplCore/should_compile/T25703a.hs
- + testsuite/tests/simplCore/should_compile/T25703a.stderr
- + testsuite/tests/simplCore/should_compile/T25883.hs
- + testsuite/tests/simplCore/should_compile/T25883.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883b.hs
- + testsuite/tests/simplCore/should_compile/T25883b.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883c.hs
- + testsuite/tests/simplCore/should_compile/T25883c.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883d.hs
- + testsuite/tests/simplCore/should_compile/T25883d.stderr
- + testsuite/tests/simplCore/should_compile/T25883d_import.hs
- + testsuite/tests/simplCore/should_compile/T25965.hs
- + testsuite/tests/simplCore/should_compile/T3990c.hs
- + testsuite/tests/simplCore/should_compile/T3990c.stdout
- testsuite/tests/simplCore/should_compile/all.T
- testsuite/tests/simplCore/should_fail/T25672.stderr
- + testsuite/tests/simplCore/should_run/T23429.hs
- + testsuite/tests/simplCore/should_run/T23429.stdout
- testsuite/tests/simplCore/should_run/all.T
- testsuite/tests/typecheck/should_compile/T7050.stderr
- testsuite/tests/typecheck/should_fail/T3966.stderr
- + testsuite/tests/typecheck/should_fail/T3966b.hs
- + testsuite/tests/typecheck/should_fail/T3966b.stderr
- testsuite/tests/typecheck/should_fail/all.T
- testsuite/tests/unboxedsums/unpack_sums_5.stderr
The diff was not included because it is too large.
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[Git][ghc/ghc][master] Fix bytecode generation for `tagToEnum# <LITERAL>`
by Marge Bot (＠marge-bot) 20 Apr '25
by Marge Bot (＠marge-bot) 20 Apr '25
20 Apr '25
Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC
Commits:
a00eeaec by Matthew Craven at 2025-04-20T10:55:03-04:00
Fix bytecode generation for `tagToEnum# <LITERAL>`
Fixes #25975.
- - - - -
4 changed files:
- compiler/GHC/StgToByteCode.hs
- + testsuite/tests/bytecode/T25975.hs
- + testsuite/tests/bytecode/T25975.stdout
- testsuite/tests/bytecode/all.T
Changes:
=====================================
compiler/GHC/StgToByteCode.hs
=====================================
@@ -1801,10 +1801,14 @@ maybe_getCCallReturnRep fn_ty
_ -> pprPanic "maybe_getCCallReturn: can't handle:"
(pprType fn_ty)
-maybe_is_tagToEnum_call :: CgStgExpr -> Maybe (Id, [Name])
+maybe_is_tagToEnum_call :: CgStgExpr -> Maybe (StgArg, [Name])
-- Detect and extract relevant info for the tagToEnum kludge.
-maybe_is_tagToEnum_call (StgOpApp (StgPrimOp TagToEnumOp) [StgVarArg v] t)
+maybe_is_tagToEnum_call (StgOpApp (StgPrimOp TagToEnumOp) args t)
+ | [v] <- args
= Just (v, extract_constr_Names t)
+ | otherwise
+ = pprPanic "StgToByteCode: tagToEnum#"
+ $ text "Expected exactly one arg, but actual args are:" <+> ppr args
where
extract_constr_Names ty
| rep_ty <- unwrapType ty
@@ -1851,13 +1855,13 @@ implement_tagToId
:: StackDepth
-> Sequel
-> BCEnv
- -> Id
+ -> StgArg
-> [Name]
-> BcM BCInstrList
-- See Note [Implementing tagToEnum#]
implement_tagToId d s p arg names
= assert (notNull names) $
- do (push_arg, arg_bytes) <- pushAtom d p (StgVarArg arg)
+ do (push_arg, arg_bytes) <- pushAtom d p arg
labels <- getLabelsBc (strictGenericLength names)
label_fail <- getLabelBc
label_exit <- getLabelBc
=====================================
testsuite/tests/bytecode/T25975.hs
=====================================
@@ -0,0 +1,27 @@
+-- Tests bytecode generation for tagToEnum# applied to literals
+{-# LANGUAGE MagicHash #-}
+module Main (main) where
+
+import GHC.Exts
+
+f1 :: Int# -> Bool
+{-# OPAQUE f1 #-}
+f1 v = case v of
+ 4# -> tagToEnum# v
+ _ -> False
+
+f2 :: Int# -> Bool
+{-# OPAQUE f2 #-}
+f2 v = case v of
+ 5# -> tagToEnum# 6#
+ _ -> True
+
+f3 :: Ordering
+f3 = tagToEnum# (noinline runRW# (\_ -> 1#))
+
+
+main :: IO ()
+main = do
+ print $ f1 2#
+ print $ f2 3#
+ print f3
=====================================
testsuite/tests/bytecode/T25975.stdout
=====================================
@@ -0,0 +1,3 @@
+False
+True
+EQ
=====================================
testsuite/tests/bytecode/all.T
=====================================
@@ -1,3 +1,7 @@
ghci_dump_bcos = [only_ways(['ghci']), extra_run_opts('-dno-typeable-binds -dsuppress-uniques -ddump-bcos')]
test('T23068', ghci_dump_bcos + [filter_stdout_lines(r'.*bitmap: .*')], ghci_script, ['T23068.script'])
+
+test('T25975', extra_ways(ghci_ways), compile_and_run,
+ # Some of the examples work more robustly with these flags
+ ['-fno-break-points -fno-full-laziness'])
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[Git][ghc/ghc][master] 3 commits: Fix specialisation of incoherent instances (fixes #25883)
by Marge Bot (＠marge-bot) 20 Apr '25
by Marge Bot (＠marge-bot) 20 Apr '25
20 Apr '25
Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC
Commits:
6caa6508 by Adam Gundry at 2025-04-20T10:54:22-04:00
Fix specialisation of incoherent instances (fixes #25883)
GHC normally assumes that class constraints are canonical, meaning that
the specialiser is allowed to replace one dictionary argument with another
provided that they have the same type. The `-fno-specialise-incoherents`
flag alters INCOHERENT instance definitions so that they will prevent
specialisation in some cases, by inserting `nospec`.
This commit fixes a bug in 7124e4ad76d98f1fc246ada4fd7bf64413ff2f2e, which
treated some INCOHERENT instance matches as if `-fno-specialise-incoherents`
was in effect, thereby unnecessarily preventing specialisation. In addition
it updates the relevant `Note [Rules for instance lookup]` and adds a new
`Note [Canonicity for incoherent matches]`.
- - - - -
0426fd6c by Adam Gundry at 2025-04-20T10:54:23-04:00
Add regression test for #23429
- - - - -
eec96527 by Adam Gundry at 2025-04-20T10:54:23-04:00
user's guide: update specification of overlapping/incoherent instances
The description of the instance resolution algorithm in the user's
guide was slightly out of date, because it mentioned in-scope given
constraints only at the end, whereas the implementation checks for
their presence before any of the other steps.
This also adds a warning to the user's guide about the impact of
incoherent instances on specialisation, and more clearly documents
some of the other effects of `-XIncoherentInstances`.
- - - - -
16 changed files:
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Tc/Solver/Dict.hs
- docs/users_guide/exts/instances.rst
- + testsuite/tests/simplCore/should_compile/T25883.hs
- + testsuite/tests/simplCore/should_compile/T25883.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883b.hs
- + testsuite/tests/simplCore/should_compile/T25883b.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883c.hs
- + testsuite/tests/simplCore/should_compile/T25883c.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883d.hs
- + testsuite/tests/simplCore/should_compile/T25883d.stderr
- + testsuite/tests/simplCore/should_compile/T25883d_import.hs
- testsuite/tests/simplCore/should_compile/all.T
- + testsuite/tests/simplCore/should_run/T23429.hs
- + testsuite/tests/simplCore/should_run/T23429.stdout
- testsuite/tests/simplCore/should_run/all.T
Changes:
=====================================
compiler/GHC/Core/InstEnv.hs
=====================================
@@ -599,7 +599,7 @@ These functions implement the carefully-written rules in the user
manual section on "overlapping instances". At risk of duplication,
here are the rules. If the rules change, change this text and the
user manual simultaneously. The link may be this:
-http://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#instance-overlap
+https://downloads.haskell.org/ghc/latest/docs/users_guide/exts/instances.html#instance-overlap
The willingness to be overlapped or incoherent is a property of the
instance declaration itself, controlled by its `OverlapMode`, as follows
@@ -627,14 +627,22 @@ of the target constraint (C ty1 .. tyn). The search works like this.
(IL0) If there are any local Givens that match (potentially unifying
any metavariables, even untouchable ones) the target constraint,
- the search fails. See Note [Instance and Given overlap] in
- GHC.Tc.Solver.Dict.
-
-(IL1) Find all instances `I` that *match* the target constraint; that is, the target
- constraint is a substitution instance of `I`. These instance declarations are
- the /candidates/.
-
-(IL2) If there are no candidates, the search fails.
+ the search fails unless -XIncoherentInstances is enabled. See
+ Note [Instance and Given overlap] in GHC.Tc.Solver.Dict. This is
+ implemented by the first guard in matchClassInst.
+
+(IL1) Find `all_matches` and `all_unifs` in `lookupInstEnv`:
+ - all_matches: all instances `I` that *match* the target constraint (that
+ is, the target constraint is a substitution instance of `I`). These
+ instance declarations are the /candidates/.
+ - all_unifs: all non-incoherent instances that *unify with but do not match*
+ the target constraint. These are not candidates, but might match later if
+ the target constraint is furhter instantiated. See
+ `data PotentialUnifiers` for more precise details.
+
+(IL2) If there are no candidates, the search fails
+ (lookupInstEnv returns no final_matches). The PotentialUnifiers are returned
+ by lookupInstEnv for use in error message generation (mkDictErr).
(IL3) Eliminate any candidate `IX` for which there is another candidate `IY` such
that both of the following hold:
@@ -644,29 +652,39 @@ of the target constraint (C ty1 .. tyn). The search works like this.
"either/or" design, rather than a "both/and" design, allow a
client to deliberately override an instance from a library,
without requiring a change to the library.)
- This is done by `pruneOverlappingMatches`
-(IL4) If all the remaining candidates are *incoherent*, the search succeeds,
- returning an arbitrary surviving candidate.
+ In addition, provided there is at least one candidate, eliminate any other
+ candidates that are *incoherent*. (In particular, if all remaining candidates
+ are incoherent, all except an arbitrarily chosen one will be eliminated.)
+
+ This is implemented by `pruneOverlappedMatches`, producing final_matches in
+ lookupInstEnv. See Note [Instance overlap and guards] and
+ Note [Incoherent instances].
+
+(IL4) If exactly one *incoherent* candidate remains, the search succeeds.
+ (By the previous step, there cannot be more than one incoherent candidate
+ remaining.)
- If any coherent or non-canonical incoherent unifiers were discarded,
- return NoUnifiers EvNonCanonical; if only canonical incoherent unifiers
- were discarded, return NoUnifiers EvCanonical
+ In this case, lookupInstEnv returns the successful match, and it returns
+ NoUnifiers as the final_unifs, which amounts to skipping the following
+ steps.
-(IL5) If more than one non-*incoherent* candidate remains, the search
- fails. Otherwise there is exactly one non-*incoherent*
- candidate; call it the "prime candidate".
+(IL5) If more than one candidate remains, the search fails. (We have already
+ eliminated the incoherent candidates, and we have no way to select
+ between non-incoherent candidates.)
-(IL6) Now find all instances that unify with the target constraint,
- but do not match it. Such non-candidate instances might match
- when the target constraint is further instantiated.
+(IL6) Otherwise there is exactly one candidate remaining. The all_unifs
+ computed at step (IL1) are returned from lookupInstEnv as final_unifs.
- If any are *coherent* (not incoherent) return them
- as PotentialUnifiers.
+ If there are no potential unifiers, the search succeeds (in matchInstEnv).
+ If there is at least one (non-incoherent) potential unifier, matchInstEnv
+ returns a NotSure result and refrains from committing to the instance.
+
+ Incoherent instances are not returned as part of the potential unifiers. This
+ affects error messages: they will not be listed as "potentially matching instances"
+ in an "Overlapping instances" or "Ambiguous type variable" error.
+ See also Note [Recording coherence information in `PotentialUnifiers`].
- If all are *incoherent* (OverlapFlag = Incoherent or NonCanonical)
- return (NoUnifiers nc), where nc is EvNonCanonical if any of the discarded
- unifiers are NonCanonical.
Notice that these rules are not influenced by flag settings in the
client module, where the instances are *used*. These rules make it
@@ -894,8 +912,8 @@ instances, i.e. with `-fno-specialise-incoherents`.
To avoid this incoherence breaking the specialiser,
-* We label as "non-canonical" the dictionary constructed by a (potentially)
- incoherent use of an ClsInst whose `OverlapFlag` is `NonCanonical`.
+* We label as "non-canonical" any dictionary constructed by a (potentially)
+ incoherent use of an ClsInst.
* We do not specialise a function if there is a non-canonical
dictionary in the /transistive dependencies/ of its dictionary
@@ -922,7 +940,9 @@ So `d2` is incoherent, and hence (transitively) so is `d1`.
Here are the moving parts:
* GHC.Core.InstEnv.lookupInstEnv tells if any incoherent unifiers were discarded
- in step (IL6) of the instance lookup.
+ in step (IL4) or (IL6) of the instance lookup: see
+ Note [Recording coherence information in `PotentialUnifiers`] and
+ Note [Canonicity for incoherent matches].
* That info is recorded in the `cir_is_coherent` field of `OneInst`, and thence
transferred to the `ep_is_coherent` field of the `EvBind` for the dictionary.
@@ -930,6 +950,47 @@ Here are the moving parts:
* In the desugarer we exploit this info:
see Note [Desugaring non-canonical evidence] in GHC.HsToCore.Expr.
See also Note [nospecId magic] in GHC.Types.Id.Make.
+
+
+Note [Canonicity for incoherent matches]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+When the selected instance is INCOHERENT at step (IL4) of
+Note [Rules for instance lookup], we ignore all unifiers,
+whether or not they are marked with INCOHERENT pragmas.
+This is implemented by returning NoUnifiers in final_unifs.
+NoUnifiers takes an argument indicating whether the match was canonical
+as described in Note [Coherence and specialisation: overview] and
+Note [Recording coherence information in `PotentialUnifiers`].
+
+To determine whether an incoherent match was canonical, we look *only*
+at the OverlapFlag of the instance being matched. For example:
+
+ class C a
+ instance {-# INCOHERENT #-} C a -- (1)
+ instance C Int -- (2)
+
+ [W] C tau
+
+Here we match instance (1) and discard instance (2). If (1) is Incoherent
+(under -fspecialise-incoherents), it is important that we treat the match
+as EvCanonical so that we do not block specialisation (see #25883).
+
+What about the following situation:
+
+ instance {-# INCOHERENT #-} C a -- (1), in a module with -fspecialise-incoherents (Incoherent)
+ instance {-# INCOHERENT #-} C Int -- (2), in a module with -fno-specialise-incoherents (NonCanonical)
+
+ [W] C tau
+
+Again we match instance (1) and discard instance (2). It is not obvious
+whether Incoherent or NonCanonical should "win" here, but it seems more
+consistent with the previous example to look only at the flag on instance (1).
+
+What about if the only instance that can match is marked as NonCanonical?
+In this case are no unifiers at all, so all_unifs = NoUnifiers EvCanonical.
+It is not obvious what -fno-specialise-incoherents should do here, but
+currently it returns NoUnifiers EvCanonical.
+
-}
type DFunInstType = Maybe Type
@@ -1070,8 +1131,8 @@ data PotentialUnifiers
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
When we find a matching instance, there might be other instances that
could potentially unify with the goal. For `INCOHERENT` instances, we
-don't care (see steps IL4 and IL6 in Note [Rules for instance
-lookup]). But if we have potentially unifying coherent instance, we
+don't care (see step (IL6) in Note [Rules for instance lookup]).
+But if we have potentially unifying coherent instance, we
report these `OneOrMoreUnifiers` so that `matchInstEnv` can go down
the `NotSure` route.
@@ -1081,6 +1142,21 @@ solution is canonical or not (see Note [Coherence and specialisation:
overview] for why we care at all). So when the set of potential
unifiers is empty, we record in `NoUnifiers` if the one solution is
`Canonical`.
+
+For example, suppose we have:
+
+ class C x y
+ instance C a Bool -- (1)
+ instance {-# INCOHERENT #-} C Int a -- (2)
+
+ [W] C x Bool
+
+Here instance (1) matches the Wanted, and since instance (2) is INCOHERENT
+we want to succeed with the match rather than getting stick at step (IL6).
+But if -fno-specialise-incoherents was enabled for (2), the specialiser is
+not permitted to specialise this dictionary later, so lookupInstEnv reports
+the PotentialUnifiers as NoUnifiers EvNonCanonical.
+
-}
instance Outputable CanonicalEvidence where
@@ -1101,10 +1177,18 @@ getCoherentUnifiers :: PotentialUnifiers -> [ClsInst]
getCoherentUnifiers NoUnifiers{} = []
getCoherentUnifiers (OneOrMoreUnifiers cls) = NE.toList cls
+-- | Are there no *coherent* unifiers?
nullUnifiers :: PotentialUnifiers -> Bool
nullUnifiers NoUnifiers{} = True
nullUnifiers _ = False
+-- | Are there any unifiers, ignoring those marked Incoherent (but including any
+-- marked NonCanonical)?
+someUnifiers :: PotentialUnifiers -> Bool
+someUnifiers (NoUnifiers EvCanonical) = False
+someUnifiers _ = True
+
+
instEnvMatchesAndUnifiers
:: InstEnv -- InstEnv to look in
-> VisibleOrphanModules -- But filter against this
@@ -1209,10 +1293,13 @@ lookupInstEnv check_overlap_safe
tys
= (final_matches, final_unifs, unsafe_overlapped)
where
+ -- (IL1): Find all instances that match the target constraint
(home_matches, home_unifs) = instEnvMatchesAndUnifiers home_ie vis_mods cls tys
(pkg_matches, pkg_unifs) = instEnvMatchesAndUnifiers pkg_ie vis_mods cls tys
all_matches = home_matches <> pkg_matches
all_unifs = home_unifs <> pkg_unifs
+
+ -- (IL3): Eliminate candidates that are overlapped or incoherent
final_matches = pruneOverlappedMatches all_matches
-- Even if the unifs is non-empty (an error situation)
-- we still prune the matches, so that the error message isn't
@@ -1230,10 +1317,13 @@ lookupInstEnv check_overlap_safe
(m:ms) | isIncoherent (fst m)
-- Incoherent match, so discard all unifiers, but
-- keep track of dropping coherent or non-canonical ones
+ -- if the match is non-canonical.
+ -- See Note [Canonicity for incoherent matches]
-> assertPpr (null ms) (ppr final_matches) $
- case all_unifs of
- OneOrMoreUnifiers{} -> NoUnifiers EvNonCanonical
- NoUnifiers{} -> all_unifs
+ NoUnifiers $
+ if isNonCanonical (fst m) && someUnifiers all_unifs
+ then EvNonCanonical
+ else EvCanonical
_ -> all_unifs
-- Note [Safe Haskell isSafeOverlap]
=====================================
compiler/GHC/Tc/Solver/Dict.hs
=====================================
@@ -926,7 +926,8 @@ matchClassInst dflags inerts clas tys loc
-- First check whether there is an in-scope Given that could
-- match this constraint. In that case, do not use any instance
-- whether top level, or local quantified constraints.
--- See Note [Instance and Given overlap]
+-- See Note [Instance and Given overlap] and see
+-- (IL0) in Note [Rules for instance lookup] in GHC.Core.InstEnv
| not (xopt LangExt.IncoherentInstances dflags)
, not (isCTupleClass clas)
-- It is always safe to unpack constraint tuples
=====================================
docs/users_guide/exts/instances.rst
=====================================
@@ -417,7 +417,7 @@ Overlapping instances
:status: Deprecated
Deprecated extension to weaken checks intended to ensure instance resolution
- termination.
+ termination. Use ``OVERLAPPING``, ``OVERLAPPABLE`` or ``OVERLAPS`` pragmas instead.
.. extension:: IncoherentInstances
:shortdesc: Allow definitions of instances that may result in incoherence.
@@ -429,7 +429,9 @@ Overlapping instances
:status: Deprecated
Deprecated extension to weaken checks intended to ensure instance resolution
- termination.
+ termination. Use ``INCOHERENT`` pragmas instead. Also permits classes to
+ have non-nominal roles, and affects the instance resolution algorithm for
+ in-scope given constraints.
In general, as discussed in :ref:`instance-resolution`, *GHC requires
that it be unambiguous which instance declaration should be used to
@@ -473,11 +475,15 @@ Now suppose that, in some client module, we are searching for an
instance of the *target constraint* ``(C ty1 .. tyn)``. The search works
like this:
+- If there are any in-scope given constraints that might match the target
+ constraint (after unifying any metavariables), and
+ :extension:`IncoherentInstances` is not enabled, the search fails.
+
- Find all instances :math:`I` that *match* the target constraint; that is, the
target constraint is a substitution instance of :math:`I`. These instance
declarations are the *candidates*.
-- If no candidates remain, the search fails
+- If there are no candidates, the search fails.
- Eliminate any candidate :math:`IX` for which there is another candidate
:math:`IY` such that both of the following hold:
@@ -498,7 +504,7 @@ like this:
- Otherwise there is exactly one non-incoherent candidate; call it the
"prime candidate".
-- Now find all instances, or in-scope given constraints, that *unify* with
+- Now find all instances that *unify* with
the target constraint,
but do not *match* it. Such non-candidate instances might match when
the target constraint is further instantiated. If all of them are
@@ -596,8 +602,8 @@ declaration, thus: ::
(You need :extension:`FlexibleContexts` to do this.)
-In the unification check in the final bullet, GHC also uses the
-"in-scope given constraints". Consider for example ::
+As an example of the "in-scope given constraints" in the first bullet,
+consider ::
instance C a Int
@@ -609,7 +615,7 @@ top-level instance, because a particular call of ``g`` might
instantiate both ``b`` and ``c`` to the same type, which would
allow the constraint to be solved in a different way. This latter
restriction is principally to make the constraint-solver complete.
-(Interested folk can read ``Note [Instance and Given overlap]`` in ``TcInteract``.)
+(Interested folk can read ``Note [Instance and Given overlap]`` in ``GHC.Tc.Solver.Dict``.)
It is easy to avoid: in a type signature avoid a constraint that
matches a top-level instance. The flag :ghc-flag:`-Wsimplifiable-class-constraints` warns about such signatures.
@@ -660,6 +666,22 @@ matches a top-level instance. The flag :ghc-flag:`-Wsimplifiable-class-constrai
to reject module ``Help`` on the grounds that a later instance
declaration might overlap the local one.)
+.. warning::
+ GHC's optimiser (in particular, the :ghc-flag:`-fspecialise` option)
+ assumes that type-classes are coherent, and hence it may replace
+ any type-class dictionary argument with another dictionary of the same
+ type.
+
+ This may cause unexpected results if incoherence occurs due to incoherent
+ or overlapping instances, and there is an observable difference between the
+ instances (see :ghc-ticket:`22448` and :ghc-ticket:`24924` for examples).
+
+ The :ghc-flag:`-fno-specialise-incoherents <-fspecialise-incoherents>` will
+ inhibit specialisation in the presence of some incoherent instance matches,
+ which may help avoid this issue at the cost of runtime performance.
+ Alternatively, specialisation can be disabled entirely with
+ :ghc-flag:`-fno-specialise <-fspecialise>`.
+
.. _instance-sigs:
Instance signatures: type signatures in instance declarations
=====================================
testsuite/tests/simplCore/should_compile/T25883.hs
=====================================
@@ -0,0 +1,20 @@
+-- By default -fspecialise-incoherents is in effect, so the call to m in f
+-- should get specialised even though there is another potential instance.
+
+{-# LANGUAGE UndecidableInstances #-}
+module T25833 (y) where
+
+class C a where
+ m :: a -> a
+
+instance {-# INCOHERENT #-} Num a => C a where
+ m = (* 3)
+
+instance C () where
+ m = id
+
+f :: Num a => a -> a
+f = m
+
+y :: Int
+y = f 2
=====================================
testsuite/tests/simplCore/should_compile/T25883.substr-simpl
=====================================
@@ -0,0 +1 @@
+y = I# 6#
\ No newline at end of file
=====================================
testsuite/tests/simplCore/should_compile/T25883b.hs
=====================================
@@ -0,0 +1,21 @@
+-- Under -fno-specialise-incoherents, the call to m in f should not be
+-- specialised, because there is another possible (though unused) instance.
+
+{-# OPTIONS_GHC -fno-specialise-incoherents #-}
+{-# LANGUAGE UndecidableInstances #-}
+module T25833b (y) where
+
+class C a where
+ m :: a -> a
+
+instance {-# INCOHERENT #-} Num a => C a where
+ m = (* 3)
+
+instance C () where
+ m = id
+
+f :: Num a => a -> a
+f = m
+
+y :: Int
+y = f 2
=====================================
testsuite/tests/simplCore/should_compile/T25883b.substr-simpl
=====================================
@@ -0,0 +1 @@
+y = nospec m
\ No newline at end of file
=====================================
testsuite/tests/simplCore/should_compile/T25883c.hs
=====================================
@@ -0,0 +1,18 @@
+-- Here -fno-specialise-incoherents is in effect, but f refers unambiguously to
+-- a single instance (because there are no others), so it should be specialised.
+
+{-# OPTIONS_GHC -fno-specialise-incoherents #-}
+{-# LANGUAGE UndecidableInstances #-}
+module T25833c (y) where
+
+class C a where
+ m :: a -> a
+
+instance {-# INCOHERENT #-} Num a => C a where
+ m = (* 3)
+
+f :: Num a => a -> a
+f = m
+
+y :: Int
+y = f 2
=====================================
testsuite/tests/simplCore/should_compile/T25883c.substr-simpl
=====================================
@@ -0,0 +1 @@
+y = I# 6#
\ No newline at end of file
=====================================
testsuite/tests/simplCore/should_compile/T25883d.hs
=====================================
@@ -0,0 +1,14 @@
+{-# OPTIONS_GHC -fno-specialise-incoherents #-}
+
+module T25883d (y) where
+
+import T25883d_import
+
+instance {-# INCOHERENT #-} C () where
+ m = id
+
+f :: Num a => a -> a
+f = m
+
+y :: Int
+y = f 2
\ No newline at end of file
=====================================
testsuite/tests/simplCore/should_compile/T25883d.stderr
=====================================
@@ -0,0 +1 @@
+y = I# 6#
=====================================
testsuite/tests/simplCore/should_compile/T25883d_import.hs
=====================================
@@ -0,0 +1,11 @@
+-- This module defines an instance with -fspecialise-incoherents in effect,
+-- then it will be imported by a module that uses -fno-specialise-incoherents.
+
+{-# LANGUAGE UndecidableInstances #-}
+module T25883d_import where
+
+class C a where
+ m :: a -> a
+
+instance {-# INCOHERENT #-} Num a => C a where
+ m = (* 3)
=====================================
testsuite/tests/simplCore/should_compile/all.T
=====================================
@@ -536,3 +536,8 @@ test('T25197', [req_th, extra_files(["T25197_TH.hs"]), only_ways(['optasm'])], m
test('T25389', normal, compile, ['-O -ddump-simpl -dsuppress-uniques -dno-typeable-binds'])
test('T24359a', normal, compile, ['-O -ddump-rules'])
test('T25713', [grep_errmsg('W:::')], compile, ['-O -ddump-simpl'])
+
+test('T25883', normal, compile_grep_core, [''])
+test('T25883b', normal, compile_grep_core, [''])
+test('T25883c', normal, compile_grep_core, [''])
+test('T25883d', [extra_files(['T25883d_import.hs'])], multimod_compile_filter, ['T25883d', '-O -ddump-simpl -dno-typeable-binds -dsuppress-all -dsuppress-uniques', r'grep -e "y ="'])
=====================================
testsuite/tests/simplCore/should_run/T23429.hs
=====================================
@@ -0,0 +1,39 @@
+{-# OPTIONS_GHC -fno-specialise-incoherents #-}
+{-# LANGUAGE MonoLocalBinds #-}
+class C a where
+ op :: a -> String
+
+instance {-# OVERLAPPABLE #-} C a where
+ op _ = "C a"
+ {-# NOINLINE op #-}
+
+instance {-# INCOHERENT #-} C (Maybe a) where
+ op _ = "C (Maybe a)"
+ {-# NOINLINE op #-}
+
+instance {-# INCOHERENT #-} C (Maybe ()) where
+ op _ = "C (Maybe ())"
+ {-# NOINLINE op #-}
+
+-- | Inhibit inlining, but keep specialize-ability
+large :: a -> a
+large x = x
+{-# NOINLINE large #-}
+
+bar :: C a => a -> String
+bar x = large (large (large (large (large (large (large (large (large (large (large (large (large (large (op x))))))))))))))
+
+gen :: a -> String -- No C a constraint, has to choose the incoherent generic instance
+gen = bar
+
+specMaybe :: Maybe a -> String -- C () constraint is resolved to the specialized instance for Maybe a
+specMaybe = bar
+
+specMaybeUnit :: Maybe () -> String -- C () constraint is resolved to the specialized instance for Maybe ()
+specMaybeUnit = bar
+
+main :: IO ()
+main = do
+ putStrLn $ "gen () == " <> gen (Just ())
+ putStrLn $ "specMaybe () == " <> specMaybe (Just ())
+ putStrLn $ "specMaybeUnit () == " <> specMaybeUnit (Just ())
=====================================
testsuite/tests/simplCore/should_run/T23429.stdout
=====================================
@@ -0,0 +1,3 @@
+gen () == C a
+specMaybe () == C (Maybe a)
+specMaybeUnit () == C (Maybe ())
=====================================
testsuite/tests/simplCore/should_run/all.T
=====================================
@@ -119,3 +119,4 @@ test('T24725', normal, compile_and_run, ['-O -dcore-lint'])
test('T25096', normal, compile_and_run, ['-O -dcore-lint'])
test('AppIsHNF', normal, compile_and_run, ['-O'])
test('T24359b', normal, compile_and_run, ['-O'])
+test('T23429', normal, compile_and_run, ['-O'])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e2f2f9d08274c90e775a35dc5b776f…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e2f2f9d08274c90e775a35dc5b776f…
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