[Git][ghc/ghc][wip/rafl/meaningful-main-return] Skip some work for the common IO () case
by Florian Ragwitz (＠rafl) 10 Oct '26
by Florian Ragwitz (＠rafl) 10 Oct '26
10 Oct '26
Florian Ragwitz pushed to branch wip/rafl/meaningful-main-return at Glasgow Haskell Compiler / GHC
Commits:
b6355bc9 by Florian Ragwitz at 2026-10-10T12:08:05-07:00
Skip some work for the common IO () case
- - - - -
1 changed file:
- compiler/GHC/Tc/Module.hs
Changes:
=====================================
compiler/GHC/Tc/Module.hs
=====================================
@@ -2042,35 +2042,36 @@ generateMainBinding tcg_env main_name = do
-- https://github.com/ghc-proposals/ghc-proposals/pull/771.
handleMainReturn :: Name -> TcType -> TcEvBinds -> LHsExpr GhcTc -> TcM (LHsExpr GhcTc)
handleMainReturn main_name res_ty ev_binds main_expr = do
- meaningful_main <- xoptM LangExt.MeaningfulMainReturn
- void_ty <- mkTyConTy <$> tcLookupKnownOccTyCon voidTyConOcc
- exit_code_ty <- mkTyConTy <$> tcLookupKnownOccTyCon exitCodeTyConOcc
- main_res_ty <- liftZonkM $ zonkTcType res_ty
-
- let unit_valid = isJust (tcUnifyTy main_res_ty unitTy)
- void_valid = isJust (tcUnifyTy main_res_ty void_ty)
- exit_code_valid = isJust (tcUnifyTy main_res_ty exit_code_ty)
-
- setSrcSpan (getSrcSpan main_name) $
- if meaningful_main
- then checkTc
- (unit_valid || void_valid || exit_code_valid)
- (TcRnInvalidMainReturn main_name main_res_ty)
- else diagnosticTc
- (not (unit_valid || void_valid))
- (TcRnAmbiguousMainReturn main_name main_res_ty)
-
let main_action = mkHsDictLet ev_binds main_expr
-
- if not meaningful_main || unit_valid || void_valid
+ main_res_ty <- liftZonkM $ zonkTcType res_ty
+ if isJust (tcUnifyTy main_res_ty unitTy)
then pure main_action
else do
- massertPpr exit_code_valid (ppr main_res_ty)
- bind_io_id <- tcLookupKnownOccId bindIOIdOcc
- exit_with_id <- tcLookupKnownOccId exitWithIdOcc
- pure $
- nlHsTyApps bind_io_id [exit_code_ty, exit_code_ty]
- [ main_action, nlHsTyApp exit_with_id [exit_code_ty] ]
+ meaningful_main <- xoptM LangExt.MeaningfulMainReturn
+ void_ty <- mkTyConTy <$> tcLookupKnownOccTyCon voidTyConOcc
+ exit_code_ty <- mkTyConTy <$> tcLookupKnownOccTyCon exitCodeTyConOcc
+
+ let void_valid = isJust (tcUnifyTy main_res_ty void_ty)
+ exit_code_valid = isJust (tcUnifyTy main_res_ty exit_code_ty)
+
+ setSrcSpan (getSrcSpan main_name) $
+ if meaningful_main
+ then checkTc
+ (void_valid || exit_code_valid)
+ (TcRnInvalidMainReturn main_name main_res_ty)
+ else diagnosticTc
+ (not void_valid)
+ (TcRnAmbiguousMainReturn main_name main_res_ty)
+
+ if not meaningful_main || void_valid
+ then pure main_action
+ else do
+ massertPpr exit_code_valid (ppr main_res_ty)
+ bind_io_id <- tcLookupKnownOccId bindIOIdOcc
+ exit_with_id <- tcLookupKnownOccId exitWithIdOcc
+ pure $
+ nlHsTyApps bind_io_id [exit_code_ty, exit_code_ty]
+ [ main_action, nlHsTyApp exit_with_id [exit_code_ty] ]
getIOType :: TcM (TcType, TcType)
-- Return (IO alpha, alpha) for fresh alpha
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b6355bc9f2ee58eb3f04382a31502f2…
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[Git][ghc/ghc][wip/supersven/hadrian-cross-stage3] 23 commits: [CLC 341] Strict variants of mutable types
by Sven Tennie (＠supersven) 10 Oct '26
by Sven Tennie (＠supersven) 10 Oct '26
10 Oct '26
Sven Tennie pushed to branch wip/supersven/hadrian-cross-stage3 at Glasgow Haskell Compiler / GHC
Commits:
f8cfb1a5 by Hécate Kleidukos at 2026-10-04T19:36:39+02:00
[CLC 341] Strict variants of mutable types
This commit is the implementation of CLC Proposal 341
https://github.com/haskell/core-libraries-committee/issues/341
- - - - -
575c4bc6 by Rodrigo Mesquita at 2026-10-05T12:32:02-04:00
ttg: HsModuleName in the AST, ModuleName in GHC
This commit makes the AST fully independent from GHC by parsing a
"module name" as an `HsModuleName (= HText)` rather than constructing an
`ModuleName (= FastString)` straight away.
In the GHC side, everything remains as a `ModuleName`. We turn AST
`HsModuleName`s into fast strings with the cheap `mkFastStringShortText`
when we process the AST for manipulation within the compiler.
There are no performance regressions introduced by this approach.
This is the final piece of #21592
Alternative plans were discussed in
gitlab.haskell.org/ghc/ghc/-/merge_requests/16546#note_694647,
but the Simon suggested one won in simplicity and performance when
compared against my attempt at implementing my original plan of having
a family `ModuleNameP`.
- - - - -
b3b89d32 by mangoiv at 2026-10-05T22:03:32-04:00
hadrian: Persist the used flavour name in the build root (#20650)
This executes the idea proposed in #20650, teaching Hadrian to persist
the flavour used to build a build root. This both makes use of multiple
build roots more ergonomic (as the user no longer needs to repeat
themselves) and avoids a tiresome foot-gun (forgetting to specify a
flavour, often wholly invalidating a build root).
Closes #20650.
Co-authored-by: Sylvain Henry <sylvain(a)haskus.fr>
- - - - -
f977837b by mangoiv at 2026-10-05T22:04:21-04:00
configure: fix sed script and subst tooldir script
Fixes #27672
Adds sanity checking for SUBST_TOOLDIR
Metric Decrease:
LinkableUsage01
MultiLayerModulesTH_OneShot
T10547
T12234
T12425
T13035
T13820
T18140
T18730
T18923
T9198
TcPlugin_RewritePerf
mhu-perf
- - - - -
f1cb08be by Hannes Siebenhandl at 2026-10-05T22:05:03-04:00
Prepend in-memory unit database for backpack
The packageDbFlags are stored in reverse order. Thus, prepending will
ensure that the in-memory unit database is the last item on the unit
database stack.
Further, the in-memory unit database needs to be able to shadow units
from earlier unit databases in the unit database stack.
Moreover, a `-clear-package-db` would remove the in-memory database if
it weren't the last item on the stack.
Closes #27835
- - - - -
8d49ed42 by Kazu Yamamoto at 2026-10-06T19:37:25-04:00
Do not leave standard file descriptors free at startup (#24450)
A process may be started with stdout closed -- `prog >&-` from a shell does
exactly that. Nothing then reserves descriptor 1, and open(), pipe() and
socket() hand out the lowest free descriptor, so the next descriptor the
runtime creates for itself takes it: the ticker's pipe, or a capability's IO
manager control pipe.
'GHC.Internal.IO.StdHandles.stdout' is a CAF, built the first time the program
writes to stdout, which is long after that has happened. It builds a 'Handle'
over descriptor 1, which now belongs to the runtime, and nothing reports an
error because the descriptor is perfectly good. The program then writes its
output into the runtime's own plumbing.
What that looks like from the outside is a hang. The descriptor the Handle has
taken over is the read end of a pipe, so poll() for POLLOUT on it never says
yes and epoll_ctl() accepts a registration for it; the thread waiting to write
blocks for ever. Closing the Handle at exit closes the runtime's descriptor,
which is worse: the ticker then fails on every tick.
'hs_init_ghc' now opens /dev/null onto whichever of descriptors 0, 1 and 2 are
closed, before the runtime creates any descriptor of its own. Each is opened
for the access that descriptor would normally have, read-only for 0 and
write-only for 1 and 2, so that writing to 'stdin' or reading from 'stdout'
still fails rather than quietly succeeding against /dev/null. See
Note [Standard file descriptors must be open].
Moving only the descriptors the runtime opens would not do: the first file the
program itself opened would land on the free number instead. The fix has to
leave no free number. A program run this way therefore finds stdout connected
to /dev/null rather than failing with EBADF on the first write, which is what
such a program would get from most other language runtimes.
Co-Authored-By: Claude Opus 5 (1M context) <noreply(a)anthropic.com>
- - - - -
65bcf9e9 by Simon Jakobi at 2026-10-06T19:38:09-04:00
changelog: Repair the sentence describing #27477
The description read "programs using could crash", the object of
"using" having been lost. The synopsis already says which programs are
affected, so drop the dangling word.
Assisted-by: Claude Fable 5.1
- - - - -
15ece296 by mangoiv at 2026-10-08T15:14:56-04:00
ci: move hadrian/ghci into the lint category so it can be picked up by more runners
Fixes #27817
- - - - -
c0823135 by mangoiv at 2026-10-08T15:14:56-04:00
ci: make lint-adjacent jobs into platform independent
- move lint jobs into lint-anyarch tag
- unify lint jobs under the same platform independent container
- - - - -
f76464cf by Zubin Duggal at 2026-10-08T15:15:39-04:00
DmdAnal: Make AbsDmd neutral in maxDmd
fixes #27845
- - - - -
ffa56ae4 by sheaf at 2026-10-09T17:15:59+02:00
Preserve sign of zero when parsing -0.0#
This commit leverages the recently added GHC.Types.Literal.Floating
module in order to preserve the sign of negative zero from
source-written floating-point literals.
Fixes #27545
- - - - -
d538cac9 by Facundo Domínguez at 2026-10-09T20:26:38-04:00
Propagate annotations to simple interfaces
This allows annotations to be visible to plugins when run by
haddock. The LiquidHaskell plugin needs the annotations, in particular.
Fixes #26761
- - - - -
32c4f4ab by meooow25 at 2026-10-09T20:27:28-04:00
Bump containers submodule to 0.8.1
And fix affected tests.
* T4086a: containers depends on template-haskell-lift now instead of
template-haskell.
* T22611: Updated to be less dependent on containers internals.
- - - - -
c786065e by sheaf at 2026-10-09T20:28:20-04:00
Use an explicit pattern match in toIfaceIdDetails
The old wildcard pattern let this code bit rot: it did not properly account
for recently added 'IdDetails' such as 'RepPolyId', which resulted in
spurious 'pprTrace' messages that could even pollute HLS sessions.
Fixes #23785
- - - - -
e7cacf59 by sheaf at 2026-10-09T20:29:09-04:00
Take into account ifKind in freeNamesIfDecl
Commit 3c2f4bb4 added the 'ifKind' field to various constructors
of 'IfaceDecl', which preserves the original kind (before type synonym
expansion) for better error messages.
However, that commit forgot to update 'freeNamesIfDecl' correspondingly.
This could result in a "urk! lookup local fingerpring" crash when e.g.
a type's kind uses a type synonym defined later, as we failed to add a
dependency on the type synonym during dependency analysis.
Fixes #27916
- - - - -
0ca15959 by Sven Tennie at 2026-10-10T19:24:06+02:00
hadrian: Add Stage3 cross-compiled target bindist (#26924)
Add a `binary-dist-stage3` Hadrian target that packages target
executables (produced by the stage2 compiler) into a separate
'_build/bindist-stage3/' folder, distinct from the stage2 regular or
cross-compiler bindist in '_build/bindist/'.
This allows a single CI pipeline job to produce both a cross-compiler
bindist (e.g. x86_64 -> RISC-V) and a target-architecture bindist (e.g.
RISC-V -> RISC-V) that can be installed and run natively on the target.
To avoid issues with stale files or race-conditions on them, generate
the `configure` script per stage in `_build/<stage>/distrib`
directories.
- - - - -
51b19449 by Sven Tennie at 2026-10-10T19:24:06+02:00
ci: Build Stage3 and Stage2 bindists for cross targets in one job (#26924)
Building the stage3 target bindist already produces most of the stage2
cross-compiler bindist as a byproduct, so building them in separate jobs
duplicates the build efforts for no benefit. Instead of a separate
CROSS_STAGE=3 job, the stage3 job now also builds and publishes the
stage2 bindist.
The stage3 tarball is named and versioned as if it were built natively
on the target (target triple prefix, non-cross opsys), so its artifact
name stays what downstream consumers already expect and no changes are
needed on their side.
For now, this is only enabled for the RISC-V job. Others can easily
follow.
- - - - -
defb092b by Sven Tennie at 2026-10-10T19:24:07+02:00
ci: model cross targets as structured TargetPlatform triples
Storing the cross target as a raw triple forced ad-hoc parsing at every
use, and broke the single responsibility rule. Modelling it as a
structured `TargetPlatform`` instead, avoids parsing and provides a
clear separation of concerns.
- - - - -
3957570f by Sven Tennie at 2026-10-10T19:24:07+02:00
ci: use a scalar cross-stage switch, FINAL_CROSS_STAGE=2|3
For cross-compilers, Stage2 bindists are (almost) a by-product of Stage3
bindists. Thus, we either build Stage2 or Stage2 + Stage3 bindists. The
commit at hand reflects this fact in types.
- - - - -
328511a4 by Sven Tennie at 2026-10-10T19:24:07+02:00
ci: extract the cross smoke tests into a separate smoke_test command
This reduces if-nesting and complexity of the main `test_hadrian`
command. The decision how to test is now made by the caller. This is a
fair choice, because most test cases can run under emulation - they are
just very slow then.
- - - - -
2ef533f6 by Sven Tennie at 2026-10-10T19:24:07+02:00
ci: inline the FINAL_CROSS_STAGE renderer
`finalCrossStageEnvVal` was small and only used in one place.
- - - - -
484c4bf1 by Sven Tennie at 2026-10-10T19:24:07+02:00
hadrian: clarify cross-stage settings and project.mk comments
Reword the settings-rule comment to name the two stage roles
(compilerStage vs libraryStage) and explain what 'the final
architecture' in terms of project.mk generation means.
- - - - -
8fb99740 by Sven Tennie at 2026-10-10T19:24:07+02:00
Fix intepreter settings for native target bindists
Stage3 cross-compiled bindists wrongly assumed they cannot run the
interpreter natively. Fix this by adjusting compile flags and choosing
the correct libs/target/default.target files per compiler stage.
- - - - -
164 changed files:
- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- + changelog.d/24450
- + changelog.d/26761
- + changelog.d/27845
- + changelog.d/T23785
- + changelog.d/T27545
- + changelog.d/T27916
- + changelog.d/clc-341-strict-mutable-data-types
- changelog.d/fix-parallel-gc-selector-race-27477
- + changelog.d/hadrian-persist-flavour
- + changelog.d/stage3-cross-bindists
- changelog.d/unit-index
- compiler/GHC.hs
- compiler/GHC/Builtin/Modules.hs
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Show.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/CallerCC/Types.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/Main/Compile.hs
- compiler/GHC/Driver/Pipeline.hs-boot
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
- compiler/GHC/Hs/Doc.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Errors/Types.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Debug.hs
- compiler/GHC/Iface/Ext/Types.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/String.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/StgToJS/Linker/Linker.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Types/UnresolvedImport.hs
- compiler/GHC/Unit/Home.hs
- compiler/GHC/Unit/Module.hs
- compiler/GHC/Unit/Module/Env.hs
- + compiler/GHC/Unit/Module/Name.hs
- compiler/GHC/Unit/Parser.hs
- compiler/GHC/Unit/Types.hs
- compiler/GHC/Unit/Types.hs-boot
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/Language/Haskell/Syntax.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- compiler/Language/Haskell/Syntax/Lit.hs
- compiler/Language/Haskell/Syntax/Module/Name.hs
- compiler/Language/Haskell/Syntax/Text.hs
- compiler/ghc.cabal.in
- distrib/configure.ac.in
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Info.hs
- hadrian/doc/flavours.md
- hadrian/src/BindistConfig.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Packages.hs
- libraries/base/base.cabal.in
- libraries/base/changelog.md
- libraries/base/src/Control/Concurrent/Chan.hs
- + libraries/base/src/Control/Concurrent/Chan/Strict.hs
- libraries/base/src/Control/Concurrent/MVar.hs
- + libraries/base/src/Control/Concurrent/MVar/Strict.hs
- libraries/base/src/Data/IORef.hs
- + libraries/base/src/Data/IORef/Strict.hs
- libraries/containers
- linters/lint-codes/LintCodes/Static.hs
- m4/subst_tooldir.m4
- rts/RtsStartup.c
- + testsuite/tests/backpack/should_compile/T27835.bkp
- + testsuite/tests/backpack/should_compile/T27835.stderr
- testsuite/tests/backpack/should_compile/all.T
- testsuite/tests/count-deps/CountDepsAst.stdout
- testsuite/tests/count-deps/CountDepsParser.stdout
- + testsuite/tests/dmdanal/should_run/T27845.hs
- + testsuite/tests/dmdanal/should_run/T27845.stdout
- + testsuite/tests/dmdanal/should_run/T27845_Lib.hs
- + testsuite/tests/dmdanal/should_run/T27845b.hs
- + testsuite/tests/dmdanal/should_run/T27845b.stdout
- + testsuite/tests/dmdanal/should_run/T27845b_Lib.hs
- testsuite/tests/dmdanal/should_run/all.T
- testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.hs
- testsuite/tests/ghc-api/exactprint/T22919.stderr
- testsuite/tests/ghc-api/exactprint/Test20239.stderr
- testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T17544.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr
- testsuite/tests/haddock/should_compile_flag_haddock/T24221.stderr
- testsuite/tests/hiefile/should_run/T24544.hs
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- testsuite/tests/module/mod185.stderr
- + testsuite/tests/numeric/should_run/T27545.hs
- + testsuite/tests/numeric/should_run/T27545.stdout
- testsuite/tests/numeric/should_run/all.T
- testsuite/tests/package/T4806a.stderr
- testsuite/tests/package/all.T
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/DumpSemis.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/T14189.stderr
- testsuite/tests/parser/should_compile/T15323.stderr
- testsuite/tests/parser/should_compile/T20452.stderr
- testsuite/tests/parser/should_compile/T20718.stderr
- testsuite/tests/parser/should_compile/T20718b.stderr
- testsuite/tests/parser/should_compile/T20846.stderr
- testsuite/tests/parser/should_compile/T23315/T23315.stderr
- + testsuite/tests/plugins/T26761.hs
- + testsuite/tests/plugins/T26761.stderr
- + testsuite/tests/plugins/T26761Plugin.hs
- + testsuite/tests/plugins/T26761a.hs
- testsuite/tests/plugins/all.T
- testsuite/tests/printer/AnnotationNoListTuplePuns.stdout
- testsuite/tests/printer/T18791.stderr
- testsuite/tests/printer/Test20297.stdout
- testsuite/tests/printer/Test24533.stdout
- testsuite/tests/profiling/should_run/caller-cc/CallerCcParser.hs
- + testsuite/tests/rts/T24450.hs
- + testsuite/tests/rts/T24450.stderr
- testsuite/tests/rts/all.T
- testsuite/tests/simplCore/should_compile/T22611.hs
- testsuite/tests/simplCore/should_compile/T22611.stderr
- + testsuite/tests/simplCore/should_compile/T22611a.hs
- testsuite/tests/simplCore/should_compile/all.T
- + testsuite/tests/typecheck/should_compile/T27916.hs
- testsuite/tests/typecheck/should_compile/all.T
- utils/check-exact/ExactPrint.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b1e9280d8a20203ee0d498cda2b81c…
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[Git][ghc/ghc][wip/rafl/meaningful-main-return] Does this introduce the allocations?
by Florian Ragwitz (＠rafl) 10 Oct '26
by Florian Ragwitz (＠rafl) 10 Oct '26
10 Oct '26
Florian Ragwitz pushed to branch wip/rafl/meaningful-main-return at Glasgow Haskell Compiler / GHC
Commits:
f9b6b8cb by Florian Ragwitz at 2026-10-10T10:22:56-07:00
Does this introduce the allocations?
- - - - -
1 changed file:
- compiler/GHC/Tc/Module.hs
Changes:
=====================================
compiler/GHC/Tc/Module.hs
=====================================
@@ -1975,12 +1975,10 @@ generateMainBinding tcg_env main_name = do
main_expr_rn = L (noAnnSrcSpan loc) (mkHsVar (L (noAnnSrcSpan loc) main_name))
-- Solve the constraints arising from checking `main` before deciding how
-- to handle its result.
- -- ; ((ev_binds, main_expr), main_wanteds) <- captureTopConstraints $
- -- setMainCtxt main_name io_ty $ tcCheckMonoExpr main_expr_rn io_ty
- -- ; main_ev_binds <- simplifyTop main_wanteds
- -- ; main_action <- handleMainReturn main_name res_ty ev_binds main_expr
- ; (ev_binds, main_expr) <- setMainCtxt main_name io_ty $
- tcCheckMonoExpr main_expr_rn io_ty
+ ; ((ev_binds, main_expr), main_wanteds) <- captureTopConstraints $
+ setMainCtxt main_name io_ty $ tcCheckMonoExpr main_expr_rn io_ty
+ ; main_ev_binds <- simplifyTop main_wanteds
+ ; main_action <- handleMainReturn main_name res_ty ev_binds main_expr
-- See Note [Root-main Id]
-- Construct the binding
@@ -1995,9 +1993,7 @@ generateMainBinding tcg_env main_name = do
-- type errors when type of `main` is not `IO a`. The `ev_binds`
-- must be put inside `runMainIO` to ensure the deferred type
-- error can be emitted correctly. See #13838.
- -- ; rhs = nlHsApp (mkLHsWrap co (nlHsVar run_main_id)) main_action
- ; rhs = nlHsApp (mkLHsWrap co (nlHsVar run_main_id)) $
- mkHsDictLet ev_binds main_expr
+ ; rhs = nlHsApp (mkLHsWrap co (nlHsVar run_main_id)) main_action
; main_bind = mkVarBind root_main_id rhs }
; return (tcg_env { tcg_main = Just main_name
@@ -2007,12 +2003,9 @@ generateMainBinding tcg_env main_name = do
`plusDU` usesOnly (unitFN main_name) }
-- Record the use of 'main', so that we don't
-- complain about it being defined but not used
- -- `addEvBinds` main_ev_binds)
- )
+ `addEvBinds` main_ev_binds)
}
-{-
-
-- Implement GHC proposal #631
-- (https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0631-m…)
--
@@ -2048,7 +2041,10 @@ generateMainBinding tcg_env main_name = do
-- An amendment to the original proposal to this effect has been submitted at
-- https://github.com/ghc-proposals/ghc-proposals/pull/771.
handleMainReturn :: Name -> TcType -> TcEvBinds -> LHsExpr GhcTc -> TcM (LHsExpr GhcTc)
-handleMainReturn main_name res_ty ev_binds main_expr = do
+handleMainReturn _main_name _res_ty ev_binds main_expr = do
+ pure (mkHsDictLet ev_binds main_expr)
+
+{-
meaningful_main <- xoptM LangExt.MeaningfulMainReturn
void_ty <- mkTyConTy <$> tcLookupKnownOccTyCon voidTyConOcc
exit_code_ty <- mkTyConTy <$> tcLookupKnownOccTyCon exitCodeTyConOcc
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f9b6b8cb6638edc464fda235c0f5128…
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[Git][ghc/ghc][wip/supersven/hadrian-cross-stage3] Fix intepreter settings for native target bindists
by Sven Tennie (＠supersven) 10 Oct '26
by Sven Tennie (＠supersven) 10 Oct '26
10 Oct '26
Sven Tennie pushed to branch wip/supersven/hadrian-cross-stage3 at Glasgow Haskell Compiler / GHC
Commits:
b1e9280d by GHC GitLab CI at 2026-10-10T18:27:27+02:00
Fix intepreter settings for native target bindists
Stage3 cross-compiled bindists wrongly assumed they cannot run the
interpreter natively. Fix this by adjusting compile flags and choosing
the correct libs/target/default.target files per compiler stage.
- - - - -
4 changed files:
- .gitlab/ci.sh
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Settings/Packages.hs
Changes:
=====================================
.gitlab/ci.sh
=====================================
@@ -701,7 +701,20 @@ function smoke_test() {
info "Smoke-testing stage3 compiler..."
file "$stage3_ghc"
- run ${CROSS_EMULATOR} "$stage3_ghc" --info
+ run ${CROSS_EMULATOR} "$stage3_ghc" --info > stage3-info
+ cat stage3-info
+
+ # The stage3 compiler is a native target compiler: it must not consider
+ # itself a cross-compiler, and GHCi support must be compiled in when the
+ # target supports it.
+ grep -q '"cross compiling","NO"' stage3-info \
+ || fail "stage3 compiler reports itself as cross-compiling"
+
+ if grep -q '"Use interpreter","YES"' stage3-info; then
+ echo 'ghci works' > ghci-expected
+ ${CROSS_EMULATOR:-} "$stage3_ghc" -e 'putStrLn "ghci works"' > ghci-actual
+ run diff -w ghci-expected ghci-actual
+ fi
run ${CROSS_EMULATOR} "$stage3_ghc" -package ghc "$TOP/.gitlab/hello.hs" -o hello-stage3
=====================================
hadrian/src/Rules/BinaryDist.hs
=====================================
@@ -70,6 +70,13 @@ These are the steps to build a bindist:
to
<build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/lib
+- for cross-compilers, overwrite the implicitly copied (previous step)
+ <build root>/<library-stage-dir>/lib/targets/default.target file with that of
+ the executable stage. I.e. copy:
+ <build root>/<executable-stage-dir>/lib/targets/default.target
+ to
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/lib/targets/default.target
+
- copy the generated docs (user guide, haddocks, etc):
<build root>/doc/
to
@@ -248,6 +255,13 @@ buildBinDistDir root conf@BindistConfig{..} = do
copyDirectory (ghcBuildDir -/- "lib") bindistFilesDir
+ -- For cross-compilers we need to override the `targets/default.target`
+ -- file that was implicitly copied from the library stage, because this
+ -- describes a target native compiler (stage3) and not a cross-compiler.
+ when (library_stage /= executable_stage) $
+ copyFile (root -/- stageString executable_stage -/- "lib" -/- "targets" -/- "default.target")
+ (bindistFilesDir -/- "lib" -/- "targets" -/- "default.target")
+
-- Regenerate settings file without LibDir. For bindists, LibDir should
-- be derived from topdir at runtime such that the GHC binary is
-- relocatable. The package DB is always at "package.conf.d" relative to
=====================================
hadrian/src/Rules/Generate.hs
=====================================
@@ -276,11 +276,21 @@ generateRules = do
else root -/- stageString libraryStage -/- "lib"
relPkgDb = makeRelativeNoSysLink libTopDir pkgDb
go (generateSettings out True relPkgDb libraryStage) out
- (prefix -/- "targets" -/- "default.target") %> \out -> go (show <$> expr (targetStage (succStage compilerStage))) out
+ (prefix -/- "targets" -/- "default.target") %> \out ->
+ go (generateTargetFile compilerStage) out
where
file <~+ gen = file %> \out -> generate out emptyTarget gen >> makeExecutable out
+ generateTargetFile :: Stage -> Expr String
+ generateTargetFile compilerStage = do
+ isCrossStage <- if compilerStage < Stage3
+ then expr (crossStage compilerStage)
+ else pure False
+ let libraryStage = if isCrossStage then succStage compilerStage else compilerStage
+ tgt <- expr (targetStage libraryStage)
+ pure $ show tgt { tgtLocallyExecutable = not isCrossStage }
+
-- TODO: Use the Types, Luke! (drop partial function)
-- We sometimes need to evaluate expressions that do not require knowing all
-- information about the context. In this case, we don't want to know anything.
=====================================
hadrian/src/Settings/Packages.hs
=====================================
@@ -112,8 +112,11 @@ packageArgs = do
, compilerStageOption ghcDebugAssertions ? arg "-DDEBUG" ]
, builder (Cabal Flags) ? mconcat
- [ andM [expr (ghcWithInterpreter stage), orM [expr (notM cross), stage1]] `cabalFlag` "interpreter"
- , andM [expr (ghcWithInterpreter stage), notM (expr cross)] `cabalFlag` "internal-interpreter"
+ -- In the context of cross-compilation, stage2 runs on the target
+ -- and thus can - if the architecture supports it - provide the
+ -- interpreter natively.
+ [ andM [expr (ghcWithInterpreter stage), orM [expr (notM cross), stage1, stage2]] `cabalFlag` "interpreter"
+ , andM [expr (ghcWithInterpreter stage), orM [expr (notM cross), stage2]] `cabalFlag` "internal-interpreter"
, ifM stage0
-- We build a threaded stage 1 if the bootstrapping compiler
-- supports it.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b1e9280d8a20203ee0d498cda2b81ce…
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[Git][ghc/ghc][wip/substitution-via-mapper] 8 commits: Preserve sign of zero when parsing -0.0#
by Simon Peyton Jones (＠simonpj) 10 Oct '26
by Simon Peyton Jones (＠simonpj) 10 Oct '26
10 Oct '26
Simon Peyton Jones pushed to branch wip/substitution-via-mapper at Glasgow Haskell Compiler / GHC
Commits:
ffa56ae4 by sheaf at 2026-10-09T17:15:59+02:00
Preserve sign of zero when parsing -0.0#
This commit leverages the recently added GHC.Types.Literal.Floating
module in order to preserve the sign of negative zero from
source-written floating-point literals.
Fixes #27545
- - - - -
d538cac9 by Facundo Domínguez at 2026-10-09T20:26:38-04:00
Propagate annotations to simple interfaces
This allows annotations to be visible to plugins when run by
haddock. The LiquidHaskell plugin needs the annotations, in particular.
Fixes #26761
- - - - -
32c4f4ab by meooow25 at 2026-10-09T20:27:28-04:00
Bump containers submodule to 0.8.1
And fix affected tests.
* T4086a: containers depends on template-haskell-lift now instead of
template-haskell.
* T22611: Updated to be less dependent on containers internals.
- - - - -
c786065e by sheaf at 2026-10-09T20:28:20-04:00
Use an explicit pattern match in toIfaceIdDetails
The old wildcard pattern let this code bit rot: it did not properly account
for recently added 'IdDetails' such as 'RepPolyId', which resulted in
spurious 'pprTrace' messages that could even pollute HLS sessions.
Fixes #23785
- - - - -
e7cacf59 by sheaf at 2026-10-09T20:29:09-04:00
Take into account ifKind in freeNamesIfDecl
Commit 3c2f4bb4 added the 'ifKind' field to various constructors
of 'IfaceDecl', which preserves the original kind (before type synonym
expansion) for better error messages.
However, that commit forgot to update 'freeNamesIfDecl' correspondingly.
This could result in a "urk! lookup local fingerpring" crash when e.g.
a type's kind uses a type synonym defined later, as we failed to add a
dependency on the type synonym during dependency analysis.
Fixes #27916
- - - - -
8e606440 by Simon Peyton Jones at 2026-10-10T16:14:47+01:00
Remove the Eq and Ord instances for ForAllTyFlag
In Note [Comparing visibility] in GHC.Core.TyCo.Compare we read that
"we always compare ForAllTyFlags with `eqForAllVis` or `cmpForAllVis`"
But alas there was an Eq and Ord instance for ForAllTyFlag, which made it
impossible to check this claim. So I made these changes:
* Move the definition of ForAllTyFlag and its related functions from
L.H.S.Specificity (where it did not belong, since L.H.S didn't use it)
into GHC.Types.Var.
* Remove the Eq and Ord instances for ForAllTyFlag
* Deal with the fallout, by using `eqForAllVis` or related functions.
* In interface files we use IfaceType as a key for a de-deduplication map
See Note [Deduplication during iface binary serialisation]
in GHC.Iface.Binary. For this we need /exact/ comparison, so we use a
newtype wrapper for IfaceForAllTyFlag, and give use `cmpForAllTyFlagExactly`
to implement its Ord instance. Tiresome but easy.
* Rename `toIfaceForAllBndrs` to `toIfaceForAllTyBndrs`
- - - - -
d91d6dfb by Simon Peyton Jones at 2026-10-10T16:14:47+01:00
Refactor type and coercion substitution
This MR refactors type and coercion substitution so that they use
TyCoMapper, rather than hand-rolled code. Fundamentally it's a simple
idea, but I had to do quite a bit of refactoring to make it fly.
I got Claude to help me this this refactoring, but I paid careful
attention to every line of code.
Main changes:
* New module GHC.Core.TyCo.Make which defines TyCoMapper, and a bunch of other
simple "smart constructors" for types and coercions. See
GHC.Core.TyCo.Rep Note [The Type-related module hierarchy], esp (TRM1)
* The new TyCoMapper has new fields `tcm_tcapp_ty` and `tcm_tcapp_co` to handle
type-constructor applications. These replace `tcm_tycon`.
* Rewrite GHC.Core.TyCo.Subst to use TyCoMapper
* Rewrite GHC.Core.Type.expandTypeSynonyms to use TyCoMapper.
* Implement `seqType` and `seqCo` with TyCoFolder. To to this I had to add
a `tcf_lit` field to TyCoFolder.
* A new module GHC.Utils.StrictIdentity to define a strict identity monad,
which itself is used for
substTyCoMapper :: TyCoMapper Subst StrictIdentity
Refactoring `seq` functions
* In GHC.Core.Seq, redefine `seqOneShot`, `seqRuleInfo`, and friends to return
`SeqResult`, a new type defined in GHC.Types.Baseic, rather than `()`. We
can define a Monoid instance for `SeqResult` that does the right thing.
* This has knock-on effects across the compiler.
- - - - -
24a92554 by Simon Peyton Jones at 2026-10-10T16:14:47+01:00
Refactor TyCoMapper to take a single monad; add StrictReaderT
TyCoMapper used to be parameterised over both an environment and a
monad, with fields like
tcm_tyvar :: env -> TyVar -> m Type
Now it is parameterised over just the monad:
tcm_tyvar :: TyVar -> m Type
If the mapping needs an environment, `m` is a reader monad over that
environment. Many uses (e.g. zonkTcTypeMapper, swizzleMapper) need no
environment at all, and used to pass a dummy (). The binder field
becomes
tcm_tycobinder :: forall r. TyCoVar -> ForAllTyFlag
-> (TyCoVar -> m r) -> m r
and runs the continuation in the extended environment. mapTyCoX is gone;
only mapTyCo remains.
To make this efficient, the reader monad must use the one-shot trick and
be strict in the environment. So:
* New module GHC.Utils.Monad.StrictReader defines
newtype StrictReaderT r m a
with hand-written instances. The builder of the pattern synonym
`StrictReaderT` is a smart constructor that adds both `oneShot` and a
bang on the environment, so every StrictReaderT computation is strict
in the environment. See Note [Instances for StrictReaderT].
* ZonkT becomes type ZonkT = StrictReaderT ZonkEnv
ZonkM becomes type ZonkM = StrictReaderT ZonkGblEnv IO
replacing their own hand-written instances.
* Substitution uses
type SubstM = StrictReaderT Subst StrictIdentity
substTyCoMapper :: TyCoMapper SubstM
and similarly expandTypeSynonymMapper.
* zonk_tycomapper :: TyCoMapper (ZonkT TcM) is now much simpler.
* swizzleMapper uses StrictIdentity rather than Identity.
* Module renaming, so that the strict monads are all peers in GHC.Utils.Monad:
GHC.Utils.StrictIdentity ==> GHC.Utils.Monad.StrictIdentity
GHC.Utils.Monad.State.Strict ==> GHC.Utils.Monad.StrictState
alongside the new GHC.Utils.Monad.StrictReader.
Co-Authored-By: Claude Opus 5.5 <noreply(a)anthropic.com>
- - - - -
113 changed files:
- + changelog.d/26761
- + changelog.d/T23785
- + changelog.d/T27545
- + changelog.d/T27916
- compiler/GHC/Builtin/WiredIn/Prim.hs
- compiler/GHC/Cmm/GenericOpt.hs
- compiler/GHC/Cmm/UniqueRenamer.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/Monad.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/Linear/State.hs
- compiler/GHC/CmmToAsm/Reg/Linear/Stats.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- compiler/GHC/CmmToAsm/Wasm/Asm.hs
- compiler/GHC/CmmToAsm/Wasm/Types.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion.hs-boot
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Map/Type.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CallerCC.hs
- compiler/GHC/Core/Opt/Exitify.hs
- compiler/GHC/Core/Reduction.hs
- compiler/GHC/Core/Seq.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/FVs.hs
- + compiler/GHC/Core/TyCo/Make.hs
- + compiler/GHC/Core/TyCo/Make.hs-boot
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Rep.hs-boot
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Type.hs-boot
- compiler/GHC/Core/Unify.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToIface.hs-boot
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/Main/Compile.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Ext/Types.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Iface/Type.hs-boot
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Stg/BcPrep.hs
- compiler/GHC/Stg/Debug.hs
- compiler/GHC/Stg/EnforceEpt/Rewrite.hs
- compiler/GHC/Stg/EnforceEpt/TagSig.hs
- compiler/GHC/Stg/Subst.hs
- compiler/GHC/Tc/Deriv/Functor.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Zonk/Env.hs
- compiler/GHC/Tc/Zonk/Monad.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/Types/Arity.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Cpr.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Name/Env.hs
- compiler/GHC/Types/Name/Occurrence.hs
- compiler/GHC/Types/Unique/DSM.hs
- compiler/GHC/Types/Unique/FM.hs
- compiler/GHC/Types/Unique/Map.hs
- compiler/GHC/Types/Unique/Set.hs
- compiler/GHC/Types/Unique/Supply.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Types/Var.hs-boot
- compiler/GHC/Types/Var/Set.hs
- compiler/GHC/Utils/Binary.hs
- + compiler/GHC/Utils/Monad/StrictIdentity.hs
- + compiler/GHC/Utils/Monad/StrictReader.hs
- compiler/GHC/Utils/Monad/State/Strict.hs → compiler/GHC/Utils/Monad/StrictState.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/Language/Haskell/Syntax/Lit.hs
- compiler/Language/Haskell/Syntax/Specificity.hs
- compiler/ghc.cabal.in
- libraries/containers
- testsuite/tests/count-deps/CountDepsParser.stdout
- + testsuite/tests/numeric/should_run/T27545.hs
- + testsuite/tests/numeric/should_run/T27545.stdout
- testsuite/tests/numeric/should_run/all.T
- testsuite/tests/package/T4806a.stderr
- testsuite/tests/package/all.T
- + testsuite/tests/plugins/T26761.hs
- + testsuite/tests/plugins/T26761.stderr
- + testsuite/tests/plugins/T26761Plugin.hs
- + testsuite/tests/plugins/T26761a.hs
- testsuite/tests/plugins/all.T
- testsuite/tests/simplCore/should_compile/T22611.hs
- testsuite/tests/simplCore/should_compile/T22611.stderr
- + testsuite/tests/simplCore/should_compile/T22611a.hs
- testsuite/tests/simplCore/should_compile/all.T
- + testsuite/tests/typecheck/should_compile/T27916.hs
- testsuite/tests/typecheck/should_compile/all.T
- utils/check-exact/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/188288591e8bf97a838c3947508240…
--
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[Git][ghc/ghc] Pushed new branch wip/fix-cross-ghc-info-unit-id
by Cheng Shao (＠TerrorJack) 10 Oct '26
by Cheng Shao (＠TerrorJack) 10 Oct '26
10 Oct '26
Cheng Shao pushed new branch wip/fix-cross-ghc-info-unit-id at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/fix-cross-ghc-info-unit-id
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[Git][ghc/ghc][wip/fix-cross-ghc-info-unit-id] compiler: ensure cross ghc --info output target unid ids
by Cheng Shao (＠TerrorJack) 10 Oct '26
by Cheng Shao (＠TerrorJack) 10 Oct '26
10 Oct '26
Cheng Shao pushed to branch wip/fix-cross-ghc-info-unit-id at Glasgow Haskell Compiler / GHC
Commits:
95f24e6b by Cheng Shao at 2026-10-10T13:14:21+00:00
compiler: ensure cross ghc --info output target unid ids
Previously, for cross ghcs, the base/ghc/ghc-internal unit ids in
--info output do not match the target unit ids reported by ghc-pkg,
breaking cross ghc release builds with hash-unit-ids when being used
with cabal 3.18. This patch fixes it by making --info output target
unid ids. Fixes #27919.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
10 changed files:
- .gitlab/hello.hs
- + changelog.d/fix-cross-ghc-info-unit-id
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- distrib/configure.ac.in
- hadrian/bindist/Makefile
- hadrian/bindist/config.mk.in
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Generate.hs
Changes:
=====================================
.gitlab/hello.hs
=====================================
@@ -27,7 +27,11 @@ fakeSettings =
sTargetPlatform =
genericPlatform,
sPlatformMisc = PlatformMisc {},
- sUnitSettings = UnitSettings { unitSettings_baseUnitId = stringToUnitId "base" }
+ sUnitSettings = UnitSettings
+ { unitSettings_baseUnitId = stringToUnitId "base"
+ , unitSettings_ghcUnitId = stringToUnitId "ghc"
+ , unitSettings_ghcInternalUnitId = stringToUnitId "ghc-internal"
+ }
}
fakeDynFlags :: DynFlags
=====================================
changelog.d/fix-cross-ghc-info-unit-id
=====================================
@@ -0,0 +1,4 @@
+section: compiler
+synopsis: Fix a bug where unit ids in cross ghc --info output doesn't match ghc-pkg output, breaking cross ghc releases with cabal 3.18.
+mrs: !16790
+issues: #27919
=====================================
compiler/GHC/Driver/Session.hs
=====================================
@@ -546,7 +546,8 @@ opt_i dflags= toolSettings_opt_i $ toolSettings dflags
setBaseUnitId :: String -> DynP ()
-setBaseUnitId s = upd $ \d -> d { unitSettings = UnitSettings (stringToUnitId s) }
+setBaseUnitId s = upd $ \d -> d
+ { unitSettings = (unitSettings d) { unitSettings_baseUnitId = stringToUnitId s } }
-----------------------------------------------------------------------------
@@ -3663,8 +3664,8 @@ compilerInfo dflags
("Project Patch Level", cProjectPatchLevel),
("Project Patch Level1", cProjectPatchLevel1),
("Project Patch Level2", cProjectPatchLevel2),
- ("Project Unit Id", cProjectUnitId),
- ("ghc-internal Unit Id", cGhcInternalUnitId), -- See Note [Special unit-ids]
+ ("Project Unit Id", unitIdString $ unitSettings_ghcUnitId $ unitSettings dflags),
+ ("ghc-internal Unit Id", unitIdString $ unitSettings_ghcInternalUnitId $ unitSettings dflags), -- See Note [Special unit-ids]
("Booter version", cBooterVersion),
("Stage", cStage),
("Build platform", cBuildPlatformString),
=====================================
compiler/GHC/Settings.hs
=====================================
@@ -94,7 +94,11 @@ data Settings = Settings
, sRawTarget :: Target
}
-data UnitSettings = UnitSettings { unitSettings_baseUnitId :: !UnitId }
+data UnitSettings = UnitSettings
+ { unitSettings_baseUnitId :: !UnitId
+ , unitSettings_ghcUnitId :: !UnitId
+ , unitSettings_ghcInternalUnitId :: !UnitId
+ }
-- | Settings for other executables GHC calls.
--
=====================================
compiler/GHC/Settings/IO.hs
=====================================
@@ -142,6 +142,8 @@ initSettings top_dir = do
ghcWithInterpreter <- getBooleanSetting "Use interpreter"
baseUnitId <- getSetting_raw "base unit-id"
+ ghcUnitId <- getSetting_raw "ghc unit-id"
+ ghcInternalUnitId <- getSetting_raw "ghc-internal unit-id"
-- LibDir is optional. If not set, derive it from topDir. This allows
-- bindists to work without explicitly setting LibDir, but gives us the
@@ -174,6 +176,8 @@ initSettings top_dir = do
, sUnitSettings = UnitSettings
{
unitSettings_baseUnitId = stringToUnitId baseUnitId
+ , unitSettings_ghcUnitId = stringToUnitId ghcUnitId
+ , unitSettings_ghcInternalUnitId = stringToUnitId ghcInternalUnitId
}
, sToolSettings = ToolSettings
=====================================
distrib/configure.ac.in
=====================================
@@ -406,6 +406,12 @@ fi
AC_SUBST(BaseUnitId)
+dnl The units supplied with the target libraries, as reported by ghc --info.
+GhcUnitId=@GhcUnitId@
+GhcInternalUnitId=@GhcInternalUnitId@
+AC_SUBST(GhcUnitId)
+AC_SUBST(GhcInternalUnitId)
+
# We get caught by
# http://savannah.gnu.org/bugs/index.php?1516
# $(eval ...) inside conditionals causes errors
=====================================
hadrian/bindist/Makefile
=====================================
@@ -90,6 +90,8 @@ lib/settings : config.mk
@echo ',("RTS ways", "$(GhcRTSWays)")' >> $@
@echo ',("Relative Global Package DB", "package.conf.d")' >> $@
@echo ',("base unit-id", "$(BaseUnitId)")' >> $@
+ @echo ',("ghc unit-id", "$(GhcUnitId)")' >> $@
+ @echo ',("ghc-internal unit-id", "$(GhcInternalUnitId)")' >> $@
@echo "]" >> $@
lib/targets/default.target : config.mk default.target
=====================================
hadrian/bindist/config.mk.in
=====================================
@@ -134,6 +134,8 @@ CrossCompilePrefix = @CrossCompilePrefix@
GhcUnregisterised = @Unregisterised@
EnableDistroToolchain = @EnableDistroToolchain@
BaseUnitId = @BaseUnitId@
+GhcUnitId = @GhcUnitId@
+GhcInternalUnitId = @GhcInternalUnitId@
# The THREADED_RTS requires `BaseReg` to be in a register and the
# `GhcUnregisterised` mode doesn't allow that.
=====================================
hadrian/src/Rules/BinaryDist.hs
=====================================
@@ -232,7 +232,7 @@ buildBinDistDir root conf@BindistConfig{..} = do
let bindistSettings = bindistFilesDir -/- "lib" -/- "settings"
bindistContext = vanillaContext library_stage compiler
bindistSettingsContent <- interpretInContext bindistContext $
- generateSettings bindistSettings False "package.conf.d"
+ generateSettings library_stage bindistSettings False "package.conf.d"
writeFileAtomic bindistSettings bindistSettingsContent
copyDirectory rtsIncludeDir bindistFilesDir
=====================================
hadrian/src/Rules/Generate.hs
=====================================
@@ -7,6 +7,7 @@ module Rules.Generate (
import Development.Shake.FilePath
import qualified Data.Set as Set
import Base
+import BindistConfig
import qualified Context
import Expression
import Hadrian.Oracles.TextFile (lookupStageBuildConfig)
@@ -275,7 +276,7 @@ generateRules = do
then root -/- stageString stage' -/- "lib"
else prefix
relPkgDb = makeRelativeNoSysLink libTopDir pkgDb
- go (generateSettings out True relPkgDb) out
+ go (generateSettings libStage out True relPkgDb) out
(prefix -/- "targets" -/- "default.target") %> \out -> go (show <$> expr (targetStage (succStage stage))) out
where
@@ -451,7 +452,9 @@ bindistRules = do
, interpolateVar "Unregisterised" $ yesNo <$> getTarget tgtUnregisterised
, interpolateVar "UseLibdw" $ fmap yesNo $ interp $ staged (fmap (isJust . tgtRTSWithLibdw) . targetStage)
, interpolateVar "UseLibffiForAdjustors" $ yesNo <$> getTarget tgtUseLibffiForAdjustors
- , interpolateVar "BaseUnitId" $ pkgUnitId Stage1 base
+ , interpolateVar "BaseUnitId" $ bindistUnitId base
+ , interpolateVar "GhcUnitId" $ bindistUnitId compiler
+ , interpolateVar "GhcInternalUnitId" $ bindistUnitId ghcInternal
, interpolateVar "GhcWithSMP" $ yesNo <$> targetSupportsSMP Stage2
, interpolateVar "TargetPlatformFull" (setting TargetPlatformFull)
, interpolateVar "BuildPlatformFull" (setting BuildPlatformFull)
@@ -460,6 +463,9 @@ bindistRules = do
where
interp = interpretInContext (semiEmptyTarget Stage2)
getTarget = interp . queryTarget Stage2
+ bindistUnitId pkg = do
+ stage <- library_stage <$> implicitBindistConfig
+ pkgUnitId stage pkg
-- | Given a 'String' replace characters '.' and '-' by underscores ('_') so that
-- the resulting 'String' is a valid C preprocessor identifier.
@@ -485,18 +491,18 @@ ghcWrapper stage = do
-- "package.conf.d"). Callers supply the correct relative path. For bindists
-- the layout is known statically; for in-tree builds callers compute it. For
-- bindists, we omit @LibDir@ so it defaults to @topDir@ at runtime.
-generateSettings :: FilePath -> Bool -> FilePath -> Expr String
-generateSettings settingsFile includeLibDir rel_pkg_db = do
+--
+-- @libraryStage@: the stage containing the target package database.
+generateSettings :: Stage -> FilePath -> Bool -> FilePath -> Expr String
+generateSettings libraryStage settingsFile includeLibDir rel_pkg_db = do
ctx <- getContext
stage <- getStage
- -- The unit-id of the base package which is always linked against (#25382)
- base_unit_id <- expr $ do
- case stage of
- Stage0 {} -> error "Unable to generate settings for stage0"
- Stage1 -> pkgUnitId Stage1 base
- Stage2 -> pkgUnitId Stage1 base
- Stage3 -> pkgUnitId Stage2 base
+ -- These are the units supplied in the target package database, which can
+ -- differ from the host units linked into a cross compiler.
+ base_unit_id <- expr $ pkgUnitId libraryStage base
+ ghc_unit_id <- expr $ pkgUnitId libraryStage compiler
+ ghc_internal_unit_id <- expr $ pkgUnitId libraryStage ghcInternal
-- For cross compilers, LibDir points to the succeeding stage's lib dir
-- (which contains the target architecture's libraries). For non-cross,
@@ -519,6 +525,8 @@ generateSettings settingsFile includeLibDir rel_pkg_db = do
, ("RTS ways", unwords . map show . Set.toList <$> getRtsWays)
, ("Relative Global Package DB", pure rel_pkg_db)
, ("base unit-id", pure base_unit_id)
+ , ("ghc unit-id", pure ghc_unit_id)
+ , ("ghc-internal unit-id", pure ghc_internal_unit_id)
]
++ ([("LibDir", pure rel_lib_topDir) | includeLibDir])
let showTuple (k, v) = "(" ++ show k ++ ", " ++ show v ++ ")"
@@ -555,7 +563,6 @@ generateConfigHs = do
-- unit-id in both situations.
cProjectUnitId <- expr . (`pkgUnitId` compiler) =<< getStage
- cGhcInternalUnitId <- expr . (`pkgUnitId` ghcInternal) =<< getStage
return $ unlines
[ "module GHC.Settings.Config"
, " ( module GHC.Version"
@@ -565,7 +572,6 @@ generateConfigHs = do
, " , cBooterVersion"
, " , cStage"
, " , cProjectUnitId"
- , " , cGhcInternalUnitId"
, " ) where"
, ""
, "import GHC.Prelude.Basic"
@@ -589,9 +595,6 @@ generateConfigHs = do
, ""
, "cProjectUnitId :: String"
, "cProjectUnitId = " ++ show cProjectUnitId
- , ""
- , "cGhcInternalUnitId :: String"
- , "cGhcInternalUnitId = " ++ show cGhcInternalUnitId
]
where
stageString (Stage0 InTreeLibs) = "1"
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/95f24e6b9be5b378e85ad6336c36f45…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/95f24e6b9be5b378e85ad6336c36f45…
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[Git][ghc/ghc] Pushed new branch wip/fix-cross-ghc-info-unit-id
by Cheng Shao (＠TerrorJack) 10 Oct '26
by Cheng Shao (＠TerrorJack) 10 Oct '26
10 Oct '26
Cheng Shao pushed new branch wip/fix-cross-ghc-info-unit-id at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/fix-cross-ghc-info-unit-id
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[Git][ghc/ghc][wip/supersven/hadrian-cross-stage3] 7 commits: hadrian: Add Stage3 cross-compiled target bindist (#26924)
by Sven Tennie (＠supersven) 10 Oct '26
by Sven Tennie (＠supersven) 10 Oct '26
10 Oct '26
Sven Tennie pushed to branch wip/supersven/hadrian-cross-stage3 at Glasgow Haskell Compiler / GHC
Commits:
de6bc053 by Sven Tennie at 2026-10-10T12:04:04+00:00
hadrian: Add Stage3 cross-compiled target bindist (#26924)
Add a `binary-dist-stage3` Hadrian target that packages target
executables (produced by the stage2 compiler) into a separate
'_build/bindist-stage3/' folder, distinct from the stage2 regular or
cross-compiler bindist in '_build/bindist/'.
This allows a single CI pipeline job to produce both a cross-compiler
bindist (e.g. x86_64 -> RISC-V) and a target-architecture bindist (e.g.
RISC-V -> RISC-V) that can be installed and run natively on the target.
To avoid issues with stale files or race-conditions on them, generate
the `configure` script per stage in `_build/<stage>/distrib`
directories.
- - - - -
be47afa7 by Sven Tennie at 2026-10-10T12:04:04+00:00
ci: Build Stage3 and Stage2 bindists for cross targets in one job (#26924)
Building the stage3 target bindist already produces most of the stage2
cross-compiler bindist as a byproduct, so building them in separate jobs
duplicates the build efforts for no benefit. Instead of a separate
CROSS_STAGE=3 job, the stage3 job now also builds and publishes the
stage2 bindist.
The stage3 tarball is named and versioned as if it were built natively
on the target (target triple prefix, non-cross opsys), so its artifact
name stays what downstream consumers already expect and no changes are
needed on their side.
For now, this is only enabled for the RISC-V job. Others can easily
follow.
- - - - -
62724e75 by Sven Tennie at 2026-10-10T12:04:04+00:00
ci: model cross targets as structured TargetPlatform triples
Storing the cross target as a raw triple forced ad-hoc parsing at every
use, and broke the single responsibility rule. Modelling it as a
structured `TargetPlatform`` instead, avoids parsing and provides a
clear separation of concerns.
- - - - -
f0446a13 by Sven Tennie at 2026-10-10T12:04:04+00:00
ci: use a scalar cross-stage switch, FINAL_CROSS_STAGE=2|3
For cross-compilers, Stage2 bindists are (almost) a by-product of Stage3
bindists. Thus, we either build Stage2 or Stage2 + Stage3 bindists. The
commit at hand reflects this fact in types.
- - - - -
72b47772 by Sven Tennie at 2026-10-10T12:04:04+00:00
ci: extract the cross smoke tests into a separate smoke_test command
This reduces if-nesting and complexity of the main `test_hadrian`
command. The decision how to test is now made by the caller. This is a
fair choice, because most test cases can run under emulation - they are
just very slow then.
- - - - -
8997872c by Sven Tennie at 2026-10-10T12:04:04+00:00
ci: inline the FINAL_CROSS_STAGE renderer
`finalCrossStageEnvVal` was small and only used in one place.
- - - - -
d096e3c6 by Sven Tennie at 2026-10-10T12:04:04+00:00
hadrian: clarify cross-stage settings and project.mk comments
Reword the settings-rule comment to name the two stage roles
(compilerStage vs libraryStage) and explain what 'the final
architecture' in terms of project.mk generation means.
- - - - -
9 changed files:
- .gitignore
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- + changelog.d/stage3-cross-bindists
- distrib/configure.ac.in
- hadrian/src/BindistConfig.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Generate.hs
Changes:
=====================================
.gitignore
=====================================
@@ -120,7 +120,6 @@ _darcs/
/compiler/GHC/CmmToLlvm/Version/Bounds.hs
/compiler/ghc.cabal
/compiler/ghc.cabal.old
-/distrib/configure.ac
/distrib/ghc.iss
/docs/index.html
/docs/man
=====================================
.gitlab/ci.sh
=====================================
@@ -62,9 +62,10 @@ Common Modes:
Environment variables affecting the build:
CROSS_TARGET Triple of cross-compilation target.
- CROSS_STAGE The stage of the cross-compiler to build either
- * 2: Build a normal cross-compiler bindist
- * 3: Build a target executable bindist (with the stage2 cross-compiler)
+ FINAL_CROSS_STAGE The final stage of the cross-compiler to build either
+ * 2: Build a cross-compiler bindist
+ * 3: Also build the target executable bindist
+ (builds stages 2 and 3; implies the bindist of 2)
VERBOSE Set to non-empty for verbose build output
RUNTEST_ARGS Arguments passed to runtest.py
TEST_WAYS Testsuite ways to run
@@ -573,10 +574,17 @@ function build_hadrian() {
export XZ_OPT="${XZ_OPT:-} -T$cores"
fi
- case "${CROSS_STAGE:-2}" in
+ case "${FINAL_CROSS_STAGE:-2}" in
2) BINDIST_TARGET="binary-dist";;
- 3) BINDIST_TARGET="binary-dist-stage3";;
- *) fail "Unknown CROSS_STAGE, must be 2 or 3";;
+ # Stage2 bindists are (almost) a byproduct of Stage3 bindists. So, we
+ # bundle both of them when the Stage3 bindist is built.
+ 3)
+ BINDIST_TARGET="binary-dist binary-dist-stage3"
+ if [[ -z "${BIN_DIST_NAME_STAGE3:-}" ]]; then
+ fail "FINAL_CROSS_STAGE=3 requires BIN_DIST_NAME_STAGE3 to be set"
+ fi
+ ;;
+ *) fail "Unknown FINAL_CROSS_STAGE, must be 2 or 3";;
esac
if [[ -n "${REINSTALL_GHC:-}" ]]; then
@@ -590,6 +598,9 @@ function build_hadrian() {
*)
run_hadrian test:all_deps $BINDIST_TARGET
mv _build/bindist/ghc*.tar.xz "$BIN_DIST_NAME.tar.xz"
+ if [[ "${FINAL_CROSS_STAGE:-2}" == "3" ]]; then
+ mv _build/bindist-stage3/ghc*.tar.xz "$BIN_DIST_NAME_STAGE3.tar.xz"
+ fi
;;
esac
fi
@@ -648,6 +659,62 @@ function install_bindist() {
end_section install-bindist
}
+# Smoke-test the cross-compiled Stage2 and Stage2 bindists using the emulator.
+# For cross jobs with a working emulator this runs instead of `test_hadrian`
+# as a separate validation step after the build.
+function smoke_test() {
+ check_msys2_deps _build/stage1/bin/ghc --version
+ check_release_build
+
+ if [[ "${CROSS_EMULATOR:-}" == "NOT_SET" ]]; then
+ info "Cannot test cross-compiled build without CROSS_EMULATOR being set."
+ return
+ fi
+
+ local instdir="$TOP/_build/install"
+ local test_compiler="$instdir/bin/${cross_prefix}ghc$exe"
+ install_bindist _build/bindist/ghc-*/ "$instdir"
+ echo 'main = putStrLn "hello world"' > expected
+ run "$test_compiler" -package ghc "$TOP/.gitlab/hello.hs" -o hello
+
+ if [[ "${CROSS_TARGET:-no_cross_target}" =~ "mingw" ]]; then
+ ${CROSS_EMULATOR:-} ./hello.exe > actual
+ else
+ ${CROSS_EMULATOR:-} ./hello > actual
+ fi
+
+ # We have to use `-w` to make the test more stable across supported
+ # platforms, i.e. Windows:
+ # $ cmp expected actual
+ # differ: byte 30, line 1
+ # $ diff expected actual
+ # 1c1
+ # < main = putStrLn "hello world"
+ # ---
+ # > main = putStrLn "hello world"
+ run diff -w expected actual
+
+ if [[ "${FINAL_CROSS_STAGE:-2}" == "3" ]]; then
+ local stage3_dir
+ stage3_dir="$(echo _build/bindist-stage3/ghc-*/)"
+ local stage3_ghc="$stage3_dir/bin/ghc$exe"
+
+ info "Smoke-testing stage3 compiler..."
+ file "$stage3_ghc"
+ run ${CROSS_EMULATOR} "$stage3_ghc" --info
+
+ run ${CROSS_EMULATOR} "$stage3_ghc" -package ghc "$TOP/.gitlab/hello.hs" -o hello-stage3
+
+ if [[ "${CROSS_TARGET:-no_cross_target}" =~ "mingw" ]]; then
+ ${CROSS_EMULATOR:-} ./hello-stage3.exe > actual-stage3
+ else
+ ${CROSS_EMULATOR:-} ./hello-stage3 > actual-stage3
+ fi
+
+ run diff -w expected actual-stage3
+ fi
+}
+
function test_hadrian() {
check_msys2_deps _build/stage1/bin/ghc --version
check_release_build
@@ -672,35 +739,7 @@ function test_hadrian() {
fi
fi
-
- if [[ "${CROSS_EMULATOR:-}" == "NOT_SET" ]]; then
- info "Cannot test cross-compiled build without CROSS_EMULATOR being set."
- return
- # If we have set CROSS_EMULATOR, then can't test using normal testsuite.
- elif [ -n "${CROSS_EMULATOR:-}" ] && [[ "${CROSS_TARGET:-}" != *"wasm"* ]]; then
- local instdir="$TOP/_build/install"
- local test_compiler="$instdir/bin/${cross_prefix}ghc$exe"
- install_bindist _build/bindist/ghc-*/ "$instdir"
- echo 'main = putStrLn "hello world"' > expected
- run "$test_compiler" -package ghc "$TOP/.gitlab/hello.hs" -o hello
-
- if [[ "${CROSS_TARGET:-no_cross_target}" =~ "mingw" ]]; then
- ${CROSS_EMULATOR:-} ./hello.exe > actual
- else
- ${CROSS_EMULATOR:-} ./hello > actual
- fi
-
- # We have to use `-w` to make the test more stable across supported
- # platforms, i.e. Windows:
- # $ cmp expected actual
- # differ: byte 30, line 1
- # $ diff expected actual
- # 1c1
- # < main = putStrLn "hello world"
- # ---
- # > main = putStrLn "hello world"
- run diff -w expected actual
- elif [[ -n "${REINSTALL_GHC:-}" ]]; then
+ if [[ -n "${REINSTALL_GHC:-}" ]]; then
run_hadrian \
test \
--test-root-dirs=testsuite/tests/stage1 \
@@ -1131,6 +1170,7 @@ case ${1:-help} in
time_it "test" test_hadrian || res=$?
push_perf_notes
exit $res ;;
+ smoke_test) time_it "smoke-test" smoke_test ;;
run_hadrian) shift; run_hadrian "$@" ;;
perf_test) run_perf_test ;;
abi_test) abi_test ;;
=====================================
.gitlab/generate-ci/gen_ci.hs
=====================================
@@ -110,26 +110,49 @@ data Opsys
= Linux LinuxDistro
| Darwin
| FreeBSD14
- | Windows deriving (Eq)
+ | Windows deriving (Eq, Show)
data LinuxDistro
= Debian13
| Debian12
- | Debian12Wine
- | Debian13Riscv
| Debian11
- | Debian11Js
| Fedora43
- | Ubuntu2404LoongArch64
| Ubuntu2404
| Ubuntu2204
| Alpine312
| Alpine323
- | AlpineWasm
| Rocky8
- deriving (Eq)
-
-data Arch = Amd64 | AArch64 | I386
+ deriving (Eq, Show)
+
+data Arch = Amd64 | AArch64 | I386 | RiscV64 | LoongArch | Wasm32 | JavaScript
+ deriving (Show)
+
+-- | Describes what the docker image is for: the development flavour of the
+-- build environment, orthogonal to the image's own architecture ('Arch').
+-- E.g. @FlavorRiscV@ denotes the image that carries the RISC-V cross
+-- toolchain.
+data ImageFlavor
+ = FlavorVanilla
+ | FlavorRiscV
+ | FlavorLoongArch
+ | FlavorWine
+ | FlavorEmscripten
+ | FlavorWasm
+ deriving (Eq, Show)
+
+-- | OS element of a configure target triple: this is the OS of the *target*
+-- platform, not the build environment (that is 'Opsys'/'LinuxDistro').
+data TargetOs
+ = TargetOsLinuxGnu
+ | TargetOsGhcjs
+ | TargetOsMingw32
+ | TargetOsWasi
+ deriving (Eq, Show)
+
+data TargetPlatform = TargetPlatform
+ { tpArch :: Arch -- ^ target architecture, e.g. 'RiscV64'
+ , tpOs :: TargetOs -- ^ target OS, e.g. 'TargetOsLinuxGnu'
+ }
data BignumBackend = Native | Gmp deriving Eq
@@ -158,8 +181,8 @@ data BuildConfig
, withAssertions :: Bool
, withNuma :: Bool
, withZstd :: Bool
- , crossTarget :: Maybe String
- , crossStage :: Maybe Int
+ , crossTarget :: Maybe TargetPlatform
+ , crossStages :: Maybe CrossStages
, crossEmulator :: CrossEmulator
, configureWrapper :: Maybe String
, fullyStatic :: Bool
@@ -180,7 +203,7 @@ configureArgsStr bc = unwords $
["--enable-unregisterised"| unregisterised bc ]
++ ["--disable-tables-next-to-code" | not (tablesNextToCode bc) ]
++ ["--with-intree-gmp" | Just _ <- [crossTarget bc] ]
- ++ ["--with-system-libffi" | crossTarget bc == Just "wasm32-wasi" ]
+ ++ ["--with-system-libffi" | (tpOs <$> crossTarget bc) == Just TargetOsWasi ]
++ ["--enable-ipe-data-compression" | withZstd bc ]
++ ["--enable-strict-ghc-toolchain-check"]
@@ -229,7 +252,7 @@ vanilla = BuildConfig
, withNuma = False
, withZstd = False
, crossTarget = Nothing
- , crossStage = Nothing
+ , crossStages = Nothing
, crossEmulator = NoEmulator
, configureWrapper = Nothing
, fullyStatic = False
@@ -275,17 +298,54 @@ static = vanilla { fullyStatic = True }
staticNativeInt :: BuildConfig
staticNativeInt = static { bignumBackend = Native }
-crossConfig :: String -- ^ target triple
+-- | The cross stages a build produces binary distributions for
+data CrossStages
+ = -- | Builds a cross-compiler (build == host, host /= target):
+ -- its bindist runs on the build host.
+ Stage2
+ | -- | Implies `Stage2` and additionally builds a cross-compiled compiler
+ -- (build /= host, host == target).
+ Stage2And3
+ deriving stock (Eq, Ord)
+
+crossConfig :: TargetPlatform -- ^ target platform
-> CrossEmulator -- ^ emulator for testing
-> Maybe String -- ^ Configure wrapper
+ -> CrossStages -- ^ final cross stages to build bindists for
-> BuildConfig
-crossConfig triple emulator configure_wrapper =
- vanilla { crossTarget = Just triple
- , crossStage = Just 2
+crossConfig targetPlatform emulator configure_wrapper crossStage =
+ vanilla { crossTarget = Just targetPlatform
+ , crossStages = Just crossStage
, crossEmulator = emulator
, configureWrapper = configure_wrapper
}
+-- | The docker image flavour of a build, derived from its cross target
+-- (the image must carry the target's toolchain) or 'FlavorVanilla' for
+-- plain builds.
+buildFlavor :: BuildConfig -> ImageFlavor
+buildFlavor bc = maybe FlavorVanilla flavorOf (crossTarget bc)
+ where
+ flavorOf :: TargetPlatform -> ImageFlavor
+ flavorOf TargetPlatform{ tpArch = arch, tpOs = os } = case (arch, os) of
+ (AArch64, TargetOsLinuxGnu) -> FlavorVanilla
+ (AArch64, TargetOsMingw32) -> FlavorWine
+ (RiscV64, TargetOsLinuxGnu) -> FlavorRiscV
+ (LoongArch, TargetOsLinuxGnu) -> FlavorLoongArch
+ (Wasm32, TargetOsWasi) -> FlavorWasm
+ (JavaScript, TargetOsGhcjs) -> FlavorEmscripten
+ _ -> error $
+ "flavorOf: no image flavour for target " ++ show arch ++ "/" ++ show os
+
+-- | The configure target triple the build system consumes, e.g.
+-- @"riscv64-linux-gnu"@.
+renderTriple :: TargetPlatform -> String
+renderTriple TargetPlatform{ tpArch = arch, tpOs = os } = case os of
+ TargetOsLinuxGnu -> archName arch ++ "-linux-gnu"
+ TargetOsGhcjs -> archName arch ++ "-unknown-ghcjs"
+ TargetOsMingw32 -> archName arch ++ "-unknown-mingw32"
+ TargetOsWasi -> archName arch ++ "-wasi"
+
llvm :: BuildConfig
llvm = vanilla { llvmBootstrap = True, testsuiteWays = ["llvm", "optllvm"] }
@@ -307,16 +367,16 @@ usePerfProfilingTestsuite bc = bc { testsuiteUsePerf = True }
-- | These tags have to match what we call the runners on gitlab
runnerTag :: Arch -> Opsys -> String
-runnerTag arch (Linux _) =
- case arch of
- Amd64 -> "x86_64-linux"
- AArch64 -> "aarch64-linux"
- I386 -> "x86_64-linux"
-runnerTag AArch64 Darwin = "aarch64-darwin"
-runnerTag Amd64 Darwin = "x86_64-darwin-m1"
-runnerTag Amd64 Windows = "new-x86_64-windows"
-runnerTag Amd64 FreeBSD14 = "x86_64-freebsd14"
-runnerTag _ _ = error "Invalid arch/opsys"
+runnerTag arch opsys = case (arch, opsys) of
+ (Amd64, Linux{}) -> "x86_64-linux"
+ (AArch64, Linux{}) -> "aarch64-linux"
+ (I386, Linux{}) -> "x86_64-linux"
+ (AArch64, Darwin) -> "aarch64-darwin"
+ (Amd64, Darwin) -> "x86_64-darwin-m1"
+ (Amd64, Windows) -> "new-x86_64-windows"
+ (Amd64, FreeBSD14) -> "x86_64-freebsd14"
+ _ -> error $ "runnerTag: no runner for "
+ ++ show arch ++ "/" ++ show opsys
tags :: Arch -> Opsys -> BuildConfig -> [String]
tags arch opsys _bc = [runnerTag arch opsys] -- Tag for which runners we can use
@@ -324,52 +384,92 @@ tags arch opsys _bc = [runnerTag arch opsys] -- Tag for which runners we can use
runnerPerfTag :: Arch -> Opsys -> String
runnerPerfTag arch sys = runnerTag arch sys ++ "-perf"
--- These names are used to find the docker image so they have to match what is
--- in the docker registry.
+-- | These names are used to find the docker image so they have to match what
+-- is in the docker registry.
distroName :: LinuxDistro -> String
distroName Debian13 = "deb13"
distroName Debian12 = "deb12"
distroName Debian11 = "deb11"
-distroName Debian11Js = "deb11-emsdk-closure"
-distroName Debian13Riscv = "deb13-riscv"
-distroName Debian12Wine = "deb12-wine"
distroName Fedora43 = "fedora43"
-distroName Ubuntu2404LoongArch64 = "ubuntu24_04-loongarch"
distroName Ubuntu2204 = "ubuntu22_04"
distroName Ubuntu2404 = "ubuntu24_04"
distroName Alpine312 = "alpine3_12"
distroName Alpine323 = "alpine3_23"
-distroName AlpineWasm = "alpine3_23-wasm"
distroName Rocky8 = "rocky8"
-opsysName :: Opsys -> String
-opsysName (Linux distro) = "linux-" ++ distroName distro
-opsysName Darwin = "darwin"
-opsysName FreeBSD14 = "freebsd14"
-opsysName Windows = "windows"
+-- | The distro tag used in docker image names, extended with the toolchain
+-- suffix of the image flavour (e.g. 'Debian13'' + 'FlavorRiscV' ->
+-- @"deb13-riscv"@).
+distroImageTag :: LinuxDistro -> ImageFlavor -> String
+distroImageTag distro flavor = distroName distro ++ flavorSuffix flavor
+ where
+ flavorSuffix :: ImageFlavor -> String
+ flavorSuffix FlavorVanilla = ""
+ flavorSuffix FlavorRiscV = "-riscv"
+ flavorSuffix FlavorLoongArch = "-loongarch"
+ flavorSuffix FlavorWine = "-wine"
+ flavorSuffix FlavorEmscripten = "-emsdk-closure"
+ flavorSuffix FlavorWasm = "-wasm"
+
+-- | OS name as it appears for job identity and docker image tags, qualified
+-- by the working image flavour if any (e.g. @"linux-deb13-riscv"@).
+opsysNameWithFlavor :: Opsys -> ImageFlavor -> String
+opsysNameWithFlavor (Linux distro) flavor = "linux-" ++ distroImageTag distro flavor
+opsysNameWithFlavor opsys _ = opsysName opsys
+ where
+ opsysName :: Opsys -> String
+ opsysName (Linux distro) = "linux-" ++ distroName distro
+ opsysName Darwin = "darwin"
+ opsysName FreeBSD14 = "freebsd14"
+ opsysName Windows = "windows"
archName :: Arch -> String
-archName Amd64 = "x86_64"
-archName AArch64 = "aarch64"
-archName I386 = "i386"
+archName Amd64 = "x86_64"
+archName AArch64 = "aarch64"
+archName I386 = "i386"
+archName RiscV64 = "riscv64"
+archName LoongArch = "loongarch64"
+archName Wasm32 = "wasm32"
+archName JavaScript = "javascript"
binDistName :: Arch -> Opsys -> BuildConfig -> String
-binDistName arch opsys bc = "ghc-" ++ testEnv arch opsys bc
+binDistName arch opsys bc = "ghc-" ++ testEnvWith (archName arch) opsys bc
+
+-- | Name of the stage3 (target-platform) bindist.
+--
+-- Because that bindist lives on its target, it is named as if built natively
+-- on the target: target architecture, the OS of the job, and no
+-- cross/toolchain flavour markers.
+stage3BinDistName :: Opsys -> BuildConfig -> Maybe String
+stage3BinDistName opsys bc
+ | buildsTargetBindist
+ , Just TargetPlatform{ tpArch = arch } <- crossTarget bc
+ = Just $ binDistName arch opsys (bc { crossTarget = Nothing })
+ | otherwise
+ = Nothing
+ where
+ -- Whether any bindist produced by this build configuration runs on its
+ -- target platform rather than on the build host.
+ buildsTargetBindist :: Bool
+ buildsTargetBindist = crossStages bc == Just Stage2And3
-- | Test env should create a string which changes whenever the 'BuildConfig' changes.
-- Either the change is reflected by modifying the flavourString or directly (as is
-- the case for settings which affect environment variables)
testEnv :: Arch -> Opsys -> BuildConfig -> String
-testEnv arch opsys bc =
+testEnv arch = testEnvWith (archName arch)
+
+testEnvWith :: String -> Opsys -> BuildConfig -> String
+testEnvWith archN opsys bc =
intercalate "-" $ concat
- [ [ archName arch
- , opsysName opsys ]
+ [ [ archN
+ , opsysNameWithFlavor opsys (buildFlavor bc) ]
, ["int_" ++ bignumString (bignumBackend bc) | bignumBackend bc /= Gmp]
, ["unreg" | unregisterised bc ]
, ["numa" | withNuma bc ]
, ["zstd" | withZstd bc ]
, ["no_tntc" | not (tablesNextToCode bc) ]
- , ["cross_"++triple | Just triple <- pure $ crossTarget bc ]
+ , ["cross_"++renderTriple ct | Just ct <- pure $ crossTarget bc ]
, [flavourString (mkJobFlavour bc)]
]
@@ -392,18 +492,18 @@ flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . f
flavour_string TextWithSIMDUTF = "text_simdutf"
-- The path to the docker image (just for linux builders)
-dockerImage :: Arch -> Opsys -> Maybe String
-dockerImage arch (Linux distro) =
+dockerImage :: Arch -> Opsys -> BuildConfig -> Maybe String
+dockerImage arch (Linux distro) bc =
Just image
where
image = mconcat
[ "registry.gitlab.haskell.org/ghc/ci-images/"
, archName arch
, "-linux-"
- , distroName distro
+ , distroImageTag distro (buildFlavor bc)
, ":$DOCKER_REV"
]
-dockerImage _ _ = Nothing
+dockerImage _ _ _ = Nothing
-----------------------------------------------------------------------------
-- Platform-specific variables
@@ -444,8 +544,8 @@ brokenTest :: TestName -- ^ test name
-> Variables
brokenTest test _why = "BROKEN_TESTS" =: test
-opsysVariables :: Arch -> Opsys -> Variables
-opsysVariables _ FreeBSD14 = mconcat
+opsysVariables :: Arch -> Opsys -> ImageFlavor -> Variables
+opsysVariables _ FreeBSD14 _ = mconcat
[ -- N.B. we use iconv from ports as I see linker errors when we attempt
-- to use the "native" iconv embedded in libc as suggested by the
-- porting guide [1].
@@ -459,8 +559,8 @@ opsysVariables _ FreeBSD14 = mconcat
, "FETCH_GHC_VERSION" =: "9.10.3"
, "CABAL_INSTALL_VERSION" =: "3.14.2.0"
]
-opsysVariables arch (Linux distro) = distroVariables arch distro
-opsysVariables AArch64 (Darwin {}) = mconcat
+opsysVariables arch (Linux distro) flavor = distroVariables arch distro flavor
+opsysVariables AArch64 (Darwin {}) _ = mconcat
[ "NIX_SYSTEM" =: "aarch64-darwin"
, "MACOSX_DEPLOYMENT_TARGET" =: "11.0"
, "LANG" =: "en_US.UTF-8"
@@ -468,7 +568,7 @@ opsysVariables AArch64 (Darwin {}) = mconcat
-- Fonts can't be installed on darwin
, "HADRIAN_ARGS" =: "--docs=no-sphinx-pdfs"
]
-opsysVariables Amd64 (Darwin {}) = mconcat
+opsysVariables Amd64 (Darwin {}) _ = mconcat
[ "NIX_SYSTEM" =: "x86_64-darwin"
, "MACOSX_DEPLOYMENT_TARGET" =: "11.0"
-- Only Sierra and onwards supports clock_gettime. See #12858
@@ -481,16 +581,15 @@ opsysVariables Amd64 (Darwin {}) = mconcat
, "CONFIGURE_ARGS" =: "--with-intree-gmp --with-system-libffi"
-- Fonts can't be installed on darwin
, "HADRIAN_ARGS" =: "--docs=no-sphinx-pdfs"
-
]
-opsysVariables _ (Windows {}) = mconcat
+opsysVariables _ (Windows {}) _ = mconcat
[ "MSYSTEM" =: "CLANG64"
, "LANG" =: "en_US.UTF-8"
, "CABAL_INSTALL_VERSION" =: "3.14.2.0"
, "HADRIAN_ARGS" =: "--docs=no-sphinx-pdfs"
, "FETCH_GHC_VERSION" =: "9.10.3"
]
-opsysVariables _ _ = mempty
+opsysVariables _ _ _ = mempty
alpineVariables :: Arch -> Variables
alpineVariables arch = mconcat $
@@ -509,10 +608,13 @@ alpineVariables arch = mconcat $
]
-distroVariables :: Arch -> LinuxDistro -> Variables
-distroVariables arch Alpine312 = alpineVariables arch
-distroVariables arch Alpine323 = alpineVariables arch
-distroVariables _ _ = mempty
+distroVariables :: Arch -> LinuxDistro -> ImageFlavor -> Variables
+distroVariables arch Alpine312 _ = alpineVariables arch
+-- The wasm image runs its own (libc-free) toolchain, so the alpine broken
+-- tests do not apply to it.
+distroVariables _ Alpine323 FlavorWasm = mempty
+distroVariables arch Alpine323 _ = alpineVariables arch
+distroVariables _ _ _ = mempty
-----------------------------------------------------------------------------
-- Cache settings, what to cache and when can we share the cache
@@ -524,8 +626,8 @@ data Cache
}
-- The cache doesn't depend on the BuildConfig because we only cache the cabal store.
-mkCacheKey :: Arch -> Opsys -> String
-mkCacheKey arch opsys = archName arch <> "-" <> opsysName opsys <> "-$CACHE_REV"
+mkCacheKey :: Arch -> Opsys -> ImageFlavor -> String
+mkCacheKey arch opsys flavor = archName arch <> "-" <> opsysNameWithFlavor opsys flavor <> "-$CACHE_REV"
instance ToJSON Cache where
toJSON Cache {..} = object
@@ -807,7 +909,7 @@ data Job
, jobArtifacts :: Artifacts
, jobCache :: Cache
, jobRules :: OnOffRules
- , jobPlatform :: (Arch, Opsys)
+ , jobPlatform :: (Arch, Opsys, ImageFlavor)
}
instance Show Job where
@@ -837,7 +939,7 @@ instance ToJSON Job where
job :: Arch -> Opsys -> BuildConfig -> NamedJob Job
job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
where
- jobPlatform = (arch, opsys)
+ jobPlatform = (arch, opsys, buildFlavor buildConfig)
jobRules = emptyRules jobName
@@ -845,14 +947,14 @@ job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
jobTags = tags arch opsys buildConfig
- jobDockerImage = dockerImage arch opsys
+ jobDockerImage = dockerImage arch opsys buildConfig
jobScript
| Windows <- opsys
= [ "bash .gitlab/ci.sh setup"
, "bash .gitlab/ci.sh configure"
, "bash .gitlab/ci.sh build_hadrian"
- , "bash .gitlab/ci.sh test_hadrian"
+ , "bash " ++ testStep
]
| otherwise
= [ "find libraries -name config.sub -exec cp config.sub {} \\;" | Darwin == opsys ] ++
@@ -860,9 +962,16 @@ job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
[ ".gitlab/ci.sh setup"
, ".gitlab/ci.sh configure"
, ".gitlab/ci.sh build_hadrian"
- , ".gitlab/ci.sh test_hadrian"
+ , testStep
]
+ -- Cross jobs with a working emulator smoke-test the bindist under the
+ -- emulator as a separate step after the build; everything else runs the
+ -- testsuite.
+ testStep
+ | Emulator _ <- crossEmulator buildConfig = ".gitlab/ci.sh smoke_test"
+ | otherwise = ".gitlab/ci.sh test_hadrian"
+
jobAfterScript
| Windows <- opsys =
[ "bash .gitlab/ci.sh save_cache"
@@ -880,16 +989,20 @@ job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
jobDependencies = []
jobVariables = mconcat
- [ opsysVariables arch opsys
+ [ opsysVariables arch opsys (buildFlavor buildConfig)
, "TEST_ENV" =: testEnv arch opsys buildConfig
, "BIN_DIST_NAME" =: binDistName arch opsys buildConfig
+ , maybe mempty ("BIN_DIST_NAME_STAGE3" =:) (stage3BinDistName opsys buildConfig)
, "BUILD_FLAVOUR" =: flavourString jobFlavour
, "BIGNUM_BACKEND" =: bignumString (bignumBackend buildConfig)
, "CONFIGURE_ARGS" =: configureArgsStr buildConfig
, "INSTALL_CONFIGURE_ARGS" =: "--enable-strict-ghc-toolchain-check"
, maybe mempty ("CONFIGURE_WRAPPER" =:) (configureWrapper buildConfig)
- , maybe mempty ("CROSS_TARGET" =:) (crossTarget buildConfig)
- , maybe mempty (("CROSS_STAGE" =:) . show) (crossStage buildConfig)
+ , maybe mempty (("CROSS_TARGET" =:) . renderTriple) (crossTarget buildConfig)
+ , case crossStages buildConfig of
+ Nothing -> mempty
+ Just Stage2 -> "FINAL_CROSS_STAGE" =: "2"
+ Just Stage2And3 -> "FINAL_CROSS_STAGE" =: "3"
, case crossEmulator buildConfig of
NoEmulator
-- we need an emulator but it isn't set. Won't run the testsuite
@@ -922,6 +1035,8 @@ job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
trim :: String -> String
trim = dropWhileEnd isSpace . dropWhile isSpace
+ stage3Artifacts = maybe [] (\n -> [n ++ ".tar.xz"]) (stage3BinDistName opsys buildConfig)
+
-- Keep in sync with the exclude list in `function clean()` in
-- `.gitlab/ci.sh`!
jobArtifacts = Artifacts
@@ -930,6 +1045,7 @@ job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
, artifactPaths = [binDistName arch opsys buildConfig ++ ".tar.xz"
,"junit.xml"
,"unexpected-test-output.tar.gz"]
+ ++ stage3Artifacts
, artifactsWhen = ArtifactsAlways
}
@@ -940,7 +1056,7 @@ job arch opsys buildConfig = NamedJob { name = jobName, jobInfo = Job {..} }
Cache { cachePaths = [], cacheKey = "no-caching" }
| otherwise = Cache
{ cachePaths = [ "cabal-cache", "toolchain" ]
- , cacheKey = mkCacheKey arch opsys
+ , cacheKey = mkCacheKey arch opsys (buildFlavor buildConfig)
}
@@ -1163,7 +1279,6 @@ debian_x86 =
, disableValidate (standardBuilds Amd64 (Linux Debian12))
, disableValidate (standardBuilds Amd64 (Linux Debian13))
-
-- Validate only builds
, fastCI (validateBuilds Amd64 (Linux validate_debian) debug)
, validateBuilds Amd64 (Linux validate_debian) nativeInt
@@ -1288,16 +1403,17 @@ alpine_aarch64 = [
cross_jobs :: [JobGroup Job]
cross_jobs = [
-- x86 -> aarch64
- validateBuilds Amd64 (Linux Debian13) (crossConfig "aarch64-linux-gnu" (Emulator "qemu-aarch64 -L /usr/aarch64-linux-gnu") Nothing)
+ validateBuilds Amd64 (Linux Debian13) (crossConfig (TargetPlatform AArch64 TargetOsLinuxGnu) (Emulator "qemu-aarch64 -L /usr/aarch64-linux-gnu") Nothing Stage2)
- -- x86_64 -> riscv
- , addValidateRule RiscV (validateBuilds Amd64 (Linux Debian13Riscv) (crossConfig "riscv64-linux-gnu" (Emulator "qemu-riscv64 -L /usr/riscv64-linux-gnu") Nothing))
+ -- Stage2: x86_64 (build/host) -> riscv64 (target)
+ -- Stage3: x86_64 (build) -> riscv64 (host/target)
+ , addValidateRule RiscV (validateBuilds Amd64 (Linux Debian13) (crossConfig (TargetPlatform RiscV64 TargetOsLinuxGnu) (Emulator "qemu-riscv64 -L /usr/riscv64-linux-gnu") Nothing Stage2And3))
-- x86_64 -> loongarch64
- , addValidateRule LoongArch64 (validateBuilds Amd64 (Linux Ubuntu2404LoongArch64) (crossConfig "loongarch64-linux-gnu" (Emulator "qemu-loongarch64 -L /usr/loongarch64-linux-gnu") Nothing))
+ , addValidateRule LoongArch64 (validateBuilds Amd64 (Linux Ubuntu2404) (crossConfig (TargetPlatform LoongArch TargetOsLinuxGnu) (Emulator "qemu-loongarch64 -L /usr/loongarch64-linux-gnu") Nothing Stage2))
-- Javascript
- , addValidateRule JSBackend (validateBuilds Amd64 (Linux Debian11Js) javascriptConfig)
+ , addValidateRule JSBackend (validateBuilds Amd64 (Linux Debian11) javascriptConfig)
-- Wasm
, make_wasm_jobs wasm_build_config
@@ -1309,13 +1425,13 @@ cross_jobs = [
-- Linux Aarch64 (Wine + FEX + MSYS64) => Windows Aarch64
, makeWinArmJobs
$ addValidateRule WinArm64
- (validateBuilds AArch64 (Linux Debian12Wine) winAarch64Config)
+ (validateBuilds AArch64 (Linux Debian12) winAarch64Config)
, makeWinArmJobs
$ addValidateRule WinArm64LLVM
- (validateBuilds AArch64 (Linux Debian12Wine) (winAarch64Config {llvmBootstrap = True}))
+ (validateBuilds AArch64 (Linux Debian12) (winAarch64Config {llvmBootstrap = True}))
]
where
- javascriptConfig = (crossConfig "javascript-unknown-ghcjs" (NoEmulatorNeeded TimeoutIncrease) (Just "emconfigure"))
+ javascriptConfig = (crossConfig (TargetPlatform JavaScript TargetOsGhcjs) (NoEmulatorNeeded TimeoutIncrease) (Just "emconfigure") Stage2)
{ bignumBackend = Native }
makeWinArmJobs = modifyJobs
@@ -1354,7 +1470,7 @@ cross_jobs = [
llvm_prefix = "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-"
cflags = "-fuse-ld=" ++ llvm_prefix ++ "ld --rtlib=compiler-rt"
- winAarch64Config = (crossConfig "aarch64-unknown-mingw32" (Emulator "/opt/wine-arm64ec-msys2-deb12/bin/wine") Nothing)
+ winAarch64Config = (crossConfig (TargetPlatform AArch64 TargetOsMingw32) (Emulator "/opt/wine-arm64ec-msys2-deb12/bin/wine") Nothing Stage2)
{ bignumBackend = Native }
make_wasm_jobs cfg =
@@ -1364,10 +1480,10 @@ cross_jobs = [
. setVariable "HADRIAN_ARGS" "--docs=no-sphinx-pdfs --docs=no-sphinx-man"
. delVariable "INSTALL_CONFIGURE_ARGS"
)
- $ addValidateRule WasmBackend $ validateBuilds Amd64 (Linux AlpineWasm) cfg
+ $ addValidateRule WasmBackend $ validateBuilds Amd64 (Linux Alpine323) cfg
wasm_build_config =
- (crossConfig "wasm32-wasi" (NoEmulatorNeeded NoTimeoutIncrease) Nothing)
+ (crossConfig (TargetPlatform Wasm32 TargetOsWasi) (NoEmulatorNeeded NoTimeoutIncrease) Nothing Stage2)
{ hostFullyStatic = True
, buildFlavour = Release -- TODO: This needs to be validate but wasm backend doesn't pass yet
, textWithSIMDUTF = True
@@ -1392,8 +1508,8 @@ job_groups =
-- Platform mapping for GHCup metadata
---------------------------------------------------------------------
-mkPlatform :: Arch -> Opsys -> String
-mkPlatform arch opsys = archName arch <> "-" <> opsysName opsys
+mkPlatform :: (Arch, Opsys, ImageFlavor) -> String
+mkPlatform (arch, opsys, flavor) = archName arch <> "-" <> opsysNameWithFlavor opsys flavor
-- | This map tells us for a specific arch/opsys combo what the job name for
-- nightly/release pipelines is. This is used by the ghcup metadata generation so that
@@ -1438,7 +1554,7 @@ platform_mapping = Map.map go combined_result
process sel =
Map.fromListWith combine
- [ (uncurry mkPlatform (jobPlatform (jobInfo j)), j)
+ [ (mkPlatform (jobPlatform (jobInfo j)), j)
| (sel -> Just j) <- job_groups
]
=====================================
.gitlab/jobs.yaml
=====================================
@@ -303,7 +303,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -319,9 +319,9 @@
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CONF_CC_OPTS_STAGE2": "-fuse-ld=/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld --rtlib=compiler-rt",
"CROSS_EMULATOR": "/opt/wine-arm64ec-msys2-deb12/bin/wine",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "aarch64-unknown-mingw32",
"CXX": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-clang++",
+ "FINAL_CROSS_STAGE": "2",
"HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"LD": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld",
@@ -387,7 +387,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -403,9 +403,9 @@
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CONF_CC_OPTS_STAGE2": "-fuse-ld=/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld --rtlib=compiler-rt",
"CROSS_EMULATOR": "/opt/wine-arm64ec-msys2-deb12/bin/wine",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "aarch64-unknown-mingw32",
"CXX": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-clang++",
+ "FINAL_CROSS_STAGE": "2",
"HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"LD": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld",
@@ -1111,7 +1111,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -1127,9 +1127,9 @@
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CONF_CC_OPTS_STAGE2": "-fuse-ld=/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld --rtlib=compiler-rt",
"CROSS_EMULATOR": "/opt/wine-arm64ec-msys2-deb12/bin/wine",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "aarch64-unknown-mingw32",
"CXX": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-clang++",
+ "FINAL_CROSS_STAGE": "2",
"HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"LD": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld",
@@ -1196,7 +1196,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -1212,9 +1212,9 @@
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CONF_CC_OPTS_STAGE2": "-fuse-ld=/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld --rtlib=compiler-rt",
"CROSS_EMULATOR": "/opt/wine-arm64ec-msys2-deb12/bin/wine",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "aarch64-unknown-mingw32",
"CXX": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-clang++",
+ "FINAL_CROSS_STAGE": "2",
"HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"LD": "/opt/llvm-mingw-linux/bin/aarch64-w64-mingw32-ld",
@@ -2010,8 +2010,8 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-alpine3_23-wasm-cross_wasm32-wasi-release+host_fully_static+text_simdutf",
"BUILD_FLAVOUR": "release+host_fully_static+text_simdutf",
"CONFIGURE_ARGS": "--with-intree-gmp --with-system-libffi --enable-strict-ghc-toolchain-check",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "wasm32-wasi",
+ "FINAL_CROSS_STAGE": "2",
"FIREFOX_LAUNCH_OPTS": "{\"browser\":\"firefox\",\"executablePath\":\"/usr/bin/firefox\"}",
"HADRIAN_ARGS": "--docs=no-sphinx-pdfs --docs=no-sphinx-man",
"RUNTEST_ARGS": "",
@@ -2077,8 +2077,8 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-alpine3_23-wasm-int_native-cross_wasm32-wasi-release+host_fully_static+text_simdutf",
"BUILD_FLAVOUR": "release+host_fully_static+text_simdutf",
"CONFIGURE_ARGS": "--with-intree-gmp --with-system-libffi --enable-strict-ghc-toolchain-check",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "wasm32-wasi",
+ "FINAL_CROSS_STAGE": "2",
"FIREFOX_LAUNCH_OPTS": "{\"browser\":\"firefox\",\"executablePath\":\"/usr/bin/firefox\"}",
"HADRIAN_ARGS": "--docs=no-sphinx-pdfs --docs=no-sphinx-man",
"RUNTEST_ARGS": "",
@@ -2144,8 +2144,8 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-alpine3_23-wasm-unreg-cross_wasm32-wasi-release+host_fully_static+text_simdutf",
"BUILD_FLAVOUR": "release+host_fully_static+text_simdutf",
"CONFIGURE_ARGS": "--enable-unregisterised --with-intree-gmp --with-system-libffi --enable-strict-ghc-toolchain-check",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "wasm32-wasi",
+ "FINAL_CROSS_STAGE": "2",
"FIREFOX_LAUNCH_OPTS": "{\"browser\":\"firefox\",\"executablePath\":\"/usr/bin/firefox\"}",
"HADRIAN_ARGS": "--docs=no-sphinx-pdfs --docs=no-sphinx-man",
"RUNTEST_ARGS": "",
@@ -2212,8 +2212,8 @@
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CONFIGURE_WRAPPER": "emconfigure",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "javascript-unknown-ghcjs",
+ "FINAL_CROSS_STAGE": "2",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-deb11-emsdk-closure-int_native-cross_javascript-unknown-ghcjs-validate",
@@ -2459,7 +2459,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -2471,8 +2471,8 @@
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CROSS_EMULATOR": "qemu-aarch64 -L /usr/aarch64-linux-gnu",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "aarch64-linux-gnu",
+ "FINAL_CROSS_STAGE": "2",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-deb13-cross_aarch64-linux-gnu-validate",
@@ -2750,7 +2750,8 @@
"paths": [
"ghc-x86_64-linux-deb13-riscv-cross_riscv64-linux-gnu-validate.tar.xz",
"junit.xml",
- "unexpected-test-output.tar.gz"
+ "unexpected-test-output.tar.gz",
+ "ghc-riscv64-linux-deb13-validate.tar.xz"
],
"reports": {
"junit": "junit.xml"
@@ -2783,7 +2784,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -2792,11 +2793,12 @@
"variables": {
"BIGNUM_BACKEND": "gmp",
"BIN_DIST_NAME": "ghc-x86_64-linux-deb13-riscv-cross_riscv64-linux-gnu-validate",
+ "BIN_DIST_NAME_STAGE3": "ghc-riscv64-linux-deb13-validate",
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CROSS_EMULATOR": "qemu-riscv64 -L /usr/riscv64-linux-gnu",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "riscv64-linux-gnu",
+ "FINAL_CROSS_STAGE": "3",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-deb13-riscv-cross_riscv64-linux-gnu-validate",
@@ -3687,7 +3689,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -3699,8 +3701,8 @@
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CROSS_EMULATOR": "qemu-loongarch64 -L /usr/loongarch64-linux-gnu",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "loongarch64-linux-gnu",
+ "FINAL_CROSS_STAGE": "2",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-ubuntu24_04-loongarch-cross_loongarch64-linux-gnu-validate",
@@ -5995,8 +5997,8 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-alpine3_23-wasm-cross_wasm32-wasi-release+host_fully_static+text_simdutf",
"BUILD_FLAVOUR": "release+host_fully_static+text_simdutf",
"CONFIGURE_ARGS": "--with-intree-gmp --with-system-libffi --enable-strict-ghc-toolchain-check",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "wasm32-wasi",
+ "FINAL_CROSS_STAGE": "2",
"FIREFOX_LAUNCH_OPTS": "{\"browser\":\"firefox\",\"executablePath\":\"/usr/bin/firefox\"}",
"HADRIAN_ARGS": "--docs=no-sphinx-pdfs --docs=no-sphinx-man",
"RUNTEST_ARGS": "",
@@ -6062,8 +6064,8 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-alpine3_23-wasm-int_native-cross_wasm32-wasi-release+host_fully_static+text_simdutf",
"BUILD_FLAVOUR": "release+host_fully_static+text_simdutf",
"CONFIGURE_ARGS": "--with-intree-gmp --with-system-libffi --enable-strict-ghc-toolchain-check",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "wasm32-wasi",
+ "FINAL_CROSS_STAGE": "2",
"FIREFOX_LAUNCH_OPTS": "{\"browser\":\"firefox\",\"executablePath\":\"/usr/bin/firefox\"}",
"HADRIAN_ARGS": "--docs=no-sphinx-pdfs --docs=no-sphinx-man",
"RUNTEST_ARGS": "",
@@ -6129,8 +6131,8 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-alpine3_23-wasm-unreg-cross_wasm32-wasi-release+host_fully_static+text_simdutf",
"BUILD_FLAVOUR": "release+host_fully_static+text_simdutf",
"CONFIGURE_ARGS": "--enable-unregisterised --with-intree-gmp --with-system-libffi --enable-strict-ghc-toolchain-check",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "wasm32-wasi",
+ "FINAL_CROSS_STAGE": "2",
"FIREFOX_LAUNCH_OPTS": "{\"browser\":\"firefox\",\"executablePath\":\"/usr/bin/firefox\"}",
"HADRIAN_ARGS": "--docs=no-sphinx-pdfs --docs=no-sphinx-man",
"RUNTEST_ARGS": "",
@@ -6196,8 +6198,8 @@
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CONFIGURE_WRAPPER": "emconfigure",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "javascript-unknown-ghcjs",
+ "FINAL_CROSS_STAGE": "2",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-deb11-emsdk-closure-int_native-cross_javascript-unknown-ghcjs-validate",
@@ -6439,7 +6441,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -6451,8 +6453,8 @@
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CROSS_EMULATOR": "qemu-aarch64 -L /usr/aarch64-linux-gnu",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "aarch64-linux-gnu",
+ "FINAL_CROSS_STAGE": "2",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-deb13-cross_aarch64-linux-gnu-validate",
@@ -6726,7 +6728,8 @@
"paths": [
"ghc-x86_64-linux-deb13-riscv-cross_riscv64-linux-gnu-validate.tar.xz",
"junit.xml",
- "unexpected-test-output.tar.gz"
+ "unexpected-test-output.tar.gz",
+ "ghc-riscv64-linux-deb13-validate.tar.xz"
],
"reports": {
"junit": "junit.xml"
@@ -6759,7 +6762,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -6768,11 +6771,12 @@
"variables": {
"BIGNUM_BACKEND": "gmp",
"BIN_DIST_NAME": "ghc-x86_64-linux-deb13-riscv-cross_riscv64-linux-gnu-validate",
+ "BIN_DIST_NAME_STAGE3": "ghc-riscv64-linux-deb13-validate",
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CROSS_EMULATOR": "qemu-riscv64 -L /usr/riscv64-linux-gnu",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "riscv64-linux-gnu",
+ "FINAL_CROSS_STAGE": "3",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-deb13-riscv-cross_riscv64-linux-gnu-validate",
@@ -7650,7 +7654,7 @@
".gitlab/ci.sh setup",
".gitlab/ci.sh configure",
".gitlab/ci.sh build_hadrian",
- ".gitlab/ci.sh test_hadrian"
+ ".gitlab/ci.sh smoke_test"
],
"stage": "full-build",
"tags": [
@@ -7662,8 +7666,8 @@
"BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
"CROSS_EMULATOR": "qemu-loongarch64 -L /usr/loongarch64-linux-gnu",
- "CROSS_STAGE": "2",
"CROSS_TARGET": "loongarch64-linux-gnu",
+ "FINAL_CROSS_STAGE": "2",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "-e config.timeout=900",
"TEST_ENV": "x86_64-linux-ubuntu24_04-loongarch-cross_loongarch64-linux-gnu-validate",
=====================================
changelog.d/stage3-cross-bindists
=====================================
@@ -0,0 +1,6 @@
+section: packaging
+synopsis: Fully cross-compiled binary distributions
+mrs: !15417
+issues: #26924
+description: Hadrian can now build cross-compiled binary distributions that run
+ native on another target architecture (e.g. AArch64 -> RISC-V).
=====================================
distrib/configure.ac.in
=====================================
@@ -9,7 +9,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [@ProjectVersion@], [
dnl See /configure.ac for rationale.
AC_PREREQ([2.69])
-AC_CONFIG_MACRO_DIRS([../m4])
+AC_CONFIG_MACRO_DIRS([m4])
dnl--------------------------------------------------------------------
dnl * Deal with arguments telling us gmp is somewhere odd
=====================================
hadrian/src/BindistConfig.hs
=====================================
@@ -24,6 +24,10 @@ crossBindist = BindistConfig { library_stage = Stage2, executable_stage = Stage1
targetBindist :: BindistConfig
targetBindist = BindistConfig { library_stage = Stage2, executable_stage = Stage2 }
+-- | Folder relative to build root ("bindist" or "bindist-stage3")
+bindistFolder :: BindistConfig -> FilePath
+bindistFolder conf | executable_stage conf == Stage2 = "bindist-stage3"
+bindistFolder _conf = "bindist"
-- | The implicit bindist config, if we don't know any better.
implicitBindistConfig :: Action BindistConfig
=====================================
hadrian/src/Rules/BinaryDist.hs
=====================================
@@ -13,66 +13,89 @@ import Rules.Generate (generateSettings)
import Settings
import qualified System.Directory.Extra as IO
import Settings.Program (programContext)
-import Target
-import Utilities
import BindistConfig
{-
Note [Binary distributions]
~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Hadrian produces binary distributions under:
+Hadrian produces binary distributions that run on the build host architecture
+(build == host, target == host || target /= host) under:
<build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>.tar.xz
-It is generated by creating an archive from:
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/
+For stage3 (build /= host, host == target) bindists, a separate parent folder
+is used:
+ <build root>/bindist-stage3/ghc-<X>.<Y>.<Z>-<arch>-<os>.tar.xz
-It does so by following the steps below.
+While regular bindists are usual same-arch compilers or cross-compilers, stage3
+bindists are cross-compiled compilers.
-- make sure we have a complete stage 2 compiler + haddock
+Bindists are generated by creating an archive from:
+ <build root>/<bindist|bindist-stage3>/ghc-<X>.<Y>.<Z>-<arch>-<os>/
+
+Stage2 cross-compilers are a by-product of creating stage3 cross-compiled
+compilers. The additional build dir (bindist-stage3) lets us keep both, such
+that we can build them in one go on CI.
+Configuration files (e.g. configure script and default.host.target) differ in
+this case and keeping both targets separated also saves us some headache
+dealing with stale files.
+
+This table introduces variables to simplify the following step descriptions:
+
+| compiler kind | <bindist-dir> | <executable-stage-dir> | <library-stage-dir> |
+|------------------|----------------|------------------------|---------------------|
+| native | bindist | stage1/ | stage1/ |
+| cross-compiler | bindist | stage1/ | stage2/ |
+| cross-compiled | bindist-stage3 | stage2/ | stage2/ |
+
+These are the steps to build a bindist:
+
+- make sure we have a complete compiler + libraries + haddock for the stage(s)
+ to bundle
- copy the specific binaries which should be in the bindist to the
bin folder and add the version suffix:
- <build root>/stage1/bin/xxxx
+ <build root>/<executable-stage-dir>/bin/xxxx
to
- <build root/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/bin/xxxx-<VER>
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/bin/[<target>-]xxxx-<VER>
+ where the optional <target>- prefix is the cross triple for cross-compilers.
- create symlink (or bash) wrapper from unversioned to versioned executable:
- <build root/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/bin/xxxx
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/bin/[<target>-]xxxx
points to:
- <build root/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/bin/xxxx-<VER>
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/bin/[<target>-]xxxx-<VER>
- copy the lib directories of the compiler we built:
- <build root>/stage1/lib
+ <build root>/<library-stage-dir>/lib
to
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/lib
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/lib
- copy the generated docs (user guide, haddocks, etc):
- <build root>/docs/
+ <build root>/doc/
to
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/docs/
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/doc/
-- use autoreconf to generate a `configure` script from
- aclocal.m4 and distrib/configure.ac, that we move to:
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/configure
+- use autoreconf to generate a staged `configure` script in
+ <build root>/<executable-stage>/distrib
+ that we move to:
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/configure
- write a (fixed) Makefile capable of supporting 'make install' to:
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/Makefile
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/Makefile
- write some (fixed) supporting bash code for the wrapper scripts to:
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/wrappers/<program>
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/wrappers/<program>
where <program> is the name of the executable that the bash file will
help wrapping.
-- copy supporting configure/make related files
- (see @bindistInstallFiles@) to:
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/<file>
+- copy supporting configure/make related files (see @bindistInstallFiles@) to:
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/<file>
- create a .tar.xz archive of the directory:
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>/
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>/
at
- <build root>/bindist/ghc-<X>.<Y>.<Z>-<arch>-<os>.tar.xz
+ <build root>/<bindist-dir>/ghc-<X>.<Y>.<Z>-<arch>-<os>.tar.xz
Note [Wrapper scripts and binary distributions]
@@ -159,12 +182,12 @@ buildBinDistDir root conf@BindistConfig{..} = do
distDir <- Context.distDir (vanillaContext library_stage rts)
let ghcBuildDir = root -/- stageString library_stage
- bindistFilesDir = root -/- "bindist" -/- ghcVersionPretty
+ bindistFilesDir = root -/- bindistFolder conf -/- ghcVersionPretty
ghcVersionPretty = "ghc-" ++ version ++ "-" ++ targetPlatform
rtsIncludeDir = distDir -/- "include"
- -- We create the bindist directory at <root>/bindist/ghc-X.Y.Z-platform/
- -- and populate it with Stage2 build results
+ -- We create the bindist directory at <root>/<bindistFolder>/ghc-X.Y.Z-platform/
+ -- and populate it with build results
createDirectory bindistFilesDir
createDirectory (bindistFilesDir -/- "bin")
createDirectory (bindistFilesDir -/- "lib")
@@ -230,9 +253,9 @@ buildBinDistDir root conf@BindistConfig{..} = do
-- relocatable. The package DB is always at "package.conf.d" relative to
-- the lib dir, matching the known bindist layout.
let bindistSettings = bindistFilesDir -/- "lib" -/- "settings"
- bindistContext = vanillaContext library_stage compiler
+ bindistContext = vanillaContext executable_stage compiler
bindistSettingsContent <- interpretInContext bindistContext $
- generateSettings bindistSettings False "package.conf.d"
+ generateSettings bindistSettings False "package.conf.d" library_stage
writeFileAtomic bindistSettings bindistSettingsContent
copyDirectory rtsIncludeDir bindistFilesDir
@@ -244,10 +267,10 @@ buildBinDistDir root conf@BindistConfig{..} = do
--
-- N.B. the ghc-pkg executable may be prefixed with a target triple
-- (c.f. #20267).
-
- -- Not going to work for cross
- ghcPkgName <- programName (vanillaContext Stage1 ghcPkg)
- ghcPkgProg <- exeSpawnPath (bindistFilesDir -/- "bin" -/- ghcPkgName)
+ -- Stage1 is also correct for cross-compiler scenarios, because it runs on
+ -- the build host.
+ ghcPkgPath <- programPath =<< programContext Stage1 ghcPkg
+ ghcPkgProg <- exeSpawnPath ghcPkgPath
cmdExe ghcPkgProg ["recache", "--package-db", bindistFilesDir -/- "lib" -/- "package.conf.d" ]
:: Action ()
@@ -345,8 +368,8 @@ bindistRules = do
buildBinDistDir root cfg
phony "binary-dist-dir-cross" $ buildBinDistDir root crossBindist
- -- MP: Not working yet
- -- phony "binary-dist-dir-stage3" $ buildBinDistDir root targetBindist
+
+ phony "binary-dist-dir-stage3" $ buildBinDistDir root targetBindist
let buildBinDist compressor = do
win_host <- isWinHost
@@ -378,49 +401,27 @@ bindistRules = do
phony (name <> "-dist-xz") $ mk_bindist Xz
phony "binary-dist-cross" $ buildBinDistX "binary-dist-dir-cross" "bindist" Xz
- phony "binary-dist-stage3" $ buildBinDistX "binary-dist-dir-stage3" "bindist" Xz
-
- -- Prepare binary distribution configure script
- -- (generated under <ghc root>/distrib/configure by 'autoreconf')
- root -/- "bindist" -/- "ghc-*" -/- "configure" %> \configurePath -> do
- need ["distrib" -/- "configure.ac"]
- ghcRoot <- topDirectory
- copyFile (ghcRoot -/- "aclocal.m4") (ghcRoot -/- "distrib" -/- "aclocal.m4")
- copyDirectory (ghcRoot -/- "m4") (ghcRoot -/- "distrib")
-
- -- Note [Autoreconf unix paths from ACLOCAL_PATH]
- -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- -- On Windows, autoreconf fails when the ACLOCAL_PATH env variable contains Windows-
- -- style paths. This happens because MSYS2 automatically converts env variables to
- -- Windows-style paths. To fix this, we convert ACLOCAL_PATH back to Unix style.
- -- This is done both in the boot Python script and here when building a bindist.
- -- See Note [MSYS paths].
- win_host <- isWinHost
- aclocalPathMay <- if win_host then getEnv "ACLOCAL_PATH" else pure Nothing
- let env = [ AddEnv "ACLOCAL_PATH" (windowsToMsysPathList aclocalPath)
- | Just aclocalPath <- [aclocalPathMay] ]
-
- buildWithCmdOptions env $
- target (vanillaContext Stage1 ghc) (Autoreconf $ ghcRoot -/- "distrib") [] []
- -- We clean after ourselves, moving the configure script we generated in
- -- our bindist dir
- removeFile (ghcRoot -/- "distrib" -/- "aclocal.m4")
- removeDirectory (ghcRoot -/- "distrib" -/- "m4")
-
- moveFile (ghcRoot -/- "distrib" -/- "configure") configurePath
-
- -- Generate the Makefile that enables the "make install" part
- root -/- "bindist" -/- "ghc-*" -/- "Makefile" %> \makefilePath -> do
- top <- topDirectory
- copyFile (top -/- "hadrian" -/- "bindist" -/- "Makefile") makefilePath
-
- -- Copy various configure-related files needed for a working
- -- './configure [...] && make install' workflow
- -- (see the list of files needed in the 'binary-dist' rule above, before
- -- creating the archive).
- forM_ bindistInstallFiles $ \file ->
- root -/- "bindist" -/- "ghc-*" -/- file %> \dest -> do
- copyFile (fixup file) dest
+ phony "binary-dist-stage3" $ buildBinDistX "binary-dist-dir-stage3" "bindist-stage3" Xz
+
+ forM_ [normalBindist, targetBindist] $ \bindistCfg -> do
+ let bindistFolderName = bindistFolder bindistCfg
+ root -/- bindistFolderName -/- "ghc-*" -/- "configure" %> \configurePath -> do
+ let distribConfigure = root -/- stageString (executable_stage bindistCfg) -/- "distrib" -/- "configure"
+ need [distribConfigure]
+ copyFile distribConfigure configurePath
+
+ -- Copy the Makefile that enables the "make install" part
+ root -/- bindistFolderName -/- "ghc-*" -/- "Makefile" %> \makefilePath -> do
+ top <- topDirectory
+ copyFile (top -/- "hadrian" -/- "bindist" -/- "Makefile") makefilePath
+
+ -- Copy various configure-related files needed for a working
+ -- './configure [...] && make install' workflow
+ -- (see the list of files needed in the 'binary-dist' rule above, before
+ -- creating the archive).
+ forM_ bindistInstallFiles $ \file ->
+ root -/- bindistFolderName -/- "ghc-*" -/- file %> \dest -> do
+ copyFile (fixup file) dest
where
fixup f | f `elem` ["INSTALL", "README"] = "distrib" -/- f
@@ -500,7 +501,7 @@ pkgToWrappers stage pkg = do
-- These are the packages which we want to expose to the user and hence
-- there are wrappers installed in the bindist.
| pkg `elem` [hpcBin, haddock, hp2ps, hsc2hs, ghc, ghcPkg]
- -> (:[]) <$> (programName =<< programContext Stage1 pkg)
+ -> (:[]) <$> (programName =<< programContext stage pkg)
| otherwise -> pure []
wrapper :: Stage -> FilePath -> Action String
@@ -553,7 +554,7 @@ ghciScriptWrapper stage = do
-- | Create a wrapper script calls the executable given as first argument
createVersionWrapper :: Stage -> Package -> String -> FilePath -> Action ()
createVersionWrapper executable_stage pkg versioned_exe install_path = do
- ghcPath <- builderPath (Ghc CompileCWithGhc (succStage executable_stage))
+ ghcPath <- builderPath (Ghc CompileCWithGhc executable_stage)
top <- topDirectory
let version_wrapper_dir = top -/- "hadrian" -/- "bindist" -/- "cwrappers"
wrapper_files = [ version_wrapper_dir -/- file | file <- ["version-wrapper.c", "getLocation.c", "cwrapper.c"]]
=====================================
hadrian/src/Rules/Generate.hs
=====================================
@@ -24,7 +24,6 @@ import Utilities
import GHC.Toolchain as Toolchain hiding (HsCpp(HsCpp))
import GHC.Platform.ArchOS
import Settings.Program (ghcWithInterpreter)
-import UserSettings (finalStage)
-- | Track this file to rebuild generated files whenever it changes.
trackGenerateHs :: Expr ()
@@ -251,32 +250,33 @@ generateRules = do
(root -/- "ghc-stage2") <~+ ghcWrapper Stage2
(root -/- "ghc-stage3") <~+ ghcWrapper Stage3
- forM_ allStages $ \stage -> do
- let prefix = root -/- stageString stage -/- "lib"
- -- For the finalStage, we generate settings for that stage. For
- -- others we look at the next stage. Why? Because cross-compilers
- -- require libs from the successor stage, otherwise they are
- -- compiled for the host and not the target.
- stage' = if stage /= finalStage then succStage stage else stage
- go gen file = generate file (semiEmptyTarget stage') gen
+ forM_ allStages $ \compilerStage -> do
+ let
+ prefix = root -/- stageString compilerStage -/- "lib"
+ go gen file = generate file (semiEmptyTarget compilerStage) gen
(prefix -/- "settings") %> \out -> do
- let get_pkg_db stg = packageDbPath (PackageDbLoc stg Final)
- -- For cross, LibDir points to stage' lib dir, so pkgDb must also
- -- be relative to stage' lib dir.
- isCross <- crossStage stage
- let libStage = case stage of
+ -- @compilerStage@ is the stage that builds the compiler, i.e. the
+ -- binary whose settings these are; @libraryStage@ is the stage
+ -- whose libraries and package DB that compiler uses. The two
+ -- differ in two cases: Stage0 has no library or package DB of its
+ -- own (the bootstrapping compiler uses Stage1's), and cross
+ -- stages use the successor stage's libraries (a cross compiler
+ -- requires libs from the successor stage, otherwise they are
+ -- compiled for the host and not the target).
+ isCross <- crossStage compilerStage
+ let libraryStage = case compilerStage of
Stage0 {} -> Stage1
- _ -> if isCross then stage' else stage
- pkgDb <- get_pkg_db libStage
+ _ -> if isCross then succStage compilerStage else compilerStage
+ pkgDb <- packageDbPath (PackageDbLoc libraryStage Final)
-- addTrailingPathSeparator needed: makeRelativeNoSysLink uses
-- splitPath where "lib" and "lib/" are distinct components.
let libTopDir = addTrailingPathSeparator $
- if isCross
- then root -/- stageString stage' -/- "lib"
- else prefix
+ if isStage0 compilerStage
+ then prefix
+ else root -/- stageString libraryStage -/- "lib"
relPkgDb = makeRelativeNoSysLink libTopDir pkgDb
- go (generateSettings out True relPkgDb) out
- (prefix -/- "targets" -/- "default.target") %> \out -> go (show <$> expr (targetStage (succStage stage))) out
+ go (generateSettings out True relPkgDb libraryStage) out
+ (prefix -/- "targets" -/- "default.target") %> \out -> go (show <$> expr (targetStage (succStage compilerStage))) out
where
file <~+ gen = file %> \out -> generate out emptyTarget gen >> makeExecutable out
@@ -412,6 +412,7 @@ templateRules = do
bindistRules :: Rules ()
bindistRules = do
+ root <- buildRootRules
templateRule ("mk" -/- "project.mk") $ mconcat
[ interpolateSetting "ProjectName" ProjectName
, interpolateSetting "ProjectVersion" ProjectVersion
@@ -423,43 +424,124 @@ bindistRules = do
, interpolateVar "HostOS_CPP" $ fmap cppify $ interp $ queryHost queryOS
- , interpolateVar "TargetPlatform" $ getTarget targetPlatformTriple
- , interpolateVar "TargetPlatform_CPP" $ cppify <$> getTarget targetPlatformTriple
- , interpolateVar "TargetArch_CPP" $ cppify <$> getTarget queryArch
- , interpolateVar "TargetOS_CPP" $ cppify <$> getTarget queryOS
- , interpolateVar "LLVMTarget" $ getTarget tgtLlvmTarget
- ]
- templateRule ("distrib" -/- "configure.ac") $ mconcat
- [ interpolateSetting "ConfiguredEmsdkVersion" EmsdkVersion
- , interpolateVar "CrossCompilePrefix" $ do
- crossCompiling <- interp $ getFlag CrossCompiling
- tpf <- setting TargetPlatformFull
- pure $ if crossCompiling then tpf <> "-" else ""
- , interpolateVar "LeadingUnderscore" $ yesNo <$> getTarget tgtSymbolsHaveLeadingUnderscore
- , interpolateSetting "LlvmMaxVersion" LlvmMaxVersion
- , interpolateSetting "LlvmMinVersion" LlvmMinVersion
- , interpolateVar "LlvmTarget" $ getTarget tgtLlvmTarget
- , interpolateSetting "ProjectVersion" ProjectVersion
- , interpolateVar "EnableDistroToolchain" $ interp (staged (lookupStageBuildConfig "settings-use-distro-mingw"))
- , interpolateVar "TablesNextToCode" $ yesNo <$> getTarget tgtTablesNextToCode
- , interpolateVar "TargetHasLibm" $ yesNo <$> getTarget tgtHasLibm
- , interpolateVar "TargetPlatform" $ getTarget targetPlatformTriple
- , interpolateVar "BuildPlatform" $ interp $ queryBuild targetPlatformTriple
- , interpolateVar "HostPlatform" $ interp $ queryHost targetPlatformTriple
- , interpolateVar "TargetWordBigEndian" $ getTarget isBigEndian
- , interpolateVar "TargetWordSize" $ getTarget wordSize
- , interpolateVar "Unregisterised" $ yesNo <$> getTarget tgtUnregisterised
- , interpolateVar "UseLibdw" $ fmap yesNo $ interp $ staged (fmap (isJust . tgtRTSWithLibdw) . targetStage)
- , interpolateVar "UseLibffiForAdjustors" $ yesNo <$> getTarget tgtUseLibffiForAdjustors
- , interpolateVar "BaseUnitId" $ pkgUnitId Stage1 base
- , interpolateVar "GhcWithSMP" $ yesNo <$> targetSupportsSMP Stage2
- , interpolateVar "TargetPlatformFull" (setting TargetPlatformFull)
- , interpolateVar "BuildPlatformFull" (setting BuildPlatformFull)
- , interpolateVar "HostPlatformFull" (setting HostPlatformFull)
+ -- Stage2 always targets the target (as in build, host, target)
+ -- architecture. Thus, we can use it constant stage here to find
+ -- information about the target architecture.
+ , interpolateVar "TargetPlatform" $ getTarget Stage2 targetPlatformTriple
+ , interpolateVar "TargetPlatform_CPP" $ cppify <$> getTarget Stage2 targetPlatformTriple
+ , interpolateVar "TargetArch_CPP" $ cppify <$> getTarget Stage2 queryArch
+ , interpolateVar "TargetOS_CPP" $ cppify <$> getTarget Stage2 queryOS
+ , interpolateVar "LLVMTarget" $ getTarget Stage2 tgtLlvmTarget
]
+ forM_ [Stage1, Stage2] $ \stage ->
+ let crossStageInterps = Interpolations $ do
+ isCrossStage <- crossStage stage
+ targetPlatform <- setting TargetPlatformFull
+ -- For cross-compiled compilers we need to pretend that they were
+ -- build on the target. For regular compilers we can assume that:
+ -- build == host == target
+ buildPlatform <-
+ if isCrossStage
+ then
+ interp $ queryBuild targetPlatformTriple
+ else getTarget stage targetPlatformTriple
+ hostPlatform <-
+ if isCrossStage
+ then
+ interp $ queryHost targetPlatformTriple
+ else getTarget stage targetPlatformTriple
+ baseUnitId <- pkgUnitId (if isCrossStage then succStage stage else stage) base
+ buildPlatformFull <- if isCrossStage then setting BuildPlatformFull else setting TargetPlatformFull
+ hostPlatformFull <- if isCrossStage then setting HostPlatformFull else setting TargetPlatformFull
+ pure
+ [ ("CrossCompilePrefix", if isCrossStage then targetPlatform <> "-" else "")
+ , ("TargetPlatformFull", targetPlatform)
+ , ("BuildPlatform", buildPlatform)
+ , ("HostPlatform", hostPlatform)
+ , ("BaseUnitId", baseUnitId)
+ , ("BuildPlatformFull", buildPlatformFull)
+ , ("HostPlatformFull", hostPlatformFull)
+ ]
+ in templateRuleFrom
+ ("distrib" -/- "configure.ac" <.> "in")
+ (root -/- stageString stage -/- "distrib" -/- "configure.ac")
+ $ mconcat
+ [ interpolateSetting "ConfiguredEmsdkVersion" EmsdkVersion
+ , interpolateVar "LeadingUnderscore" $ yesNo <$> getLibTarget stage tgtSymbolsHaveLeadingUnderscore
+ , interpolateSetting "LlvmMaxVersion" LlvmMaxVersion
+ , interpolateSetting "LlvmMinVersion" LlvmMinVersion
+ , interpolateVar "LlvmTarget" $ getLibTarget stage tgtLlvmTarget
+ , interpolateSetting "ProjectVersion" ProjectVersion
+ , interpolateVar "EnableDistroToolchain" $ interp (staged (lookupStageBuildConfig "settings-use-distro-mingw"))
+ , interpolateVar "TablesNextToCode" $ yesNo <$> getLibTarget stage tgtTablesNextToCode
+ , interpolateVar "TargetHasLibm" $ yesNo <$> getLibTarget stage tgtHasLibm
+ , interpolateVar "TargetPlatform" $ getLibTarget stage targetPlatformTriple
+ , interpolateVar "TargetWordBigEndian" $ getLibTarget stage isBigEndian
+ , interpolateVar "TargetWordSize" $ getLibTarget stage wordSize
+ , interpolateVar "Unregisterised" $ yesNo <$> getLibTarget stage tgtUnregisterised
+ , interpolateVar "UseLibdw" $ yesNo <$> getLibTarget stage (isJust . tgtRTSWithLibdw)
+ , interpolateVar "UseLibffiForAdjustors" $ yesNo <$> getLibTarget stage tgtUseLibffiForAdjustors
+ , interpolateVar "GhcWithSMP" $ yesNo <$> libStageSupportsSMP stage
+ , crossStageInterps
+ ]
+
+ -- We can build two kinds of bindists: Regular Stage2 (including
+ -- cross-compilers) and fully cross-compiled Stage3. To avoid
+ -- race-conditions, stale files, etc. build the `configure` scripts as part
+ -- of the stage's _build files. This requires copying several files such that
+ -- they are available to the autoconf run.
+ forM_ [Stage1, Stage2] $ \stage -> do
+ let distribDir = root -/- stageString stage -/- "distrib"
+
+ distribDir -/- "aclocal.m4" %> \out -> do
+ top <- topDirectory
+ copyFile (top -/- "aclocal.m4") out
+
+ forM_ ["config.sub", "config.guess", "install-sh"] $ \f ->
+ distribDir -/- f %> \out -> do
+ top <- topDirectory
+ copyFile (top -/- f) out
+
+ distribDir -/- "m4/*.m4" %> \out -> do
+ top <- topDirectory
+ copyFile (top -/- "m4" -/- takeFileName out) out
+
+ distribDir -/- "configure" %> \_ -> do
+ top <- topDirectory
+ m4Files <- getDirectoryFiles (top -/- "m4") ["*.m4"]
+ need $ [ distribDir -/- "configure.ac"
+ , distribDir -/- "config.sub"
+ , distribDir -/- "config.guess"
+ , distribDir -/- "install-sh"
+ , distribDir -/- "aclocal.m4"
+ ]
+ ++ [ distribDir -/- "m4" -/- takeFileName f | f <- m4Files ]
+
+ -- Note [Autoreconf unix paths from ACLOCAL_PATH]
+ -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ -- On Windows, autoreconf fails when the ACLOCAL_PATH env variable
+ -- contains Windows-style paths. MSYS2 auto-converts env vars to
+ -- Windows-style, so we convert ACLOCAL_PATH back to Unix style here.
+ -- This is done both in the boot Python script and here when
+ -- building a bindist.
+ -- See Note [MSYS paths].
+ win_host <- isWinHost
+ aclocalPathMay <- if win_host then getEnv "ACLOCAL_PATH" else pure Nothing
+ let env = [ AddEnv "ACLOCAL_PATH" (windowsToMsysPathList aclocalPath)
+ | Just aclocalPath <- [aclocalPathMay] ]
+
+ buildWithCmdOptions env $
+ target (vanillaContext stage ghc) (Autoreconf distribDir) [] []
where
interp = interpretInContext (semiEmptyTarget Stage2)
- getTarget = interp . queryTarget Stage2
+ getTarget stage = interp . queryTarget stage
+ getLibTarget executableStage f = do
+ isCross <- crossStage executableStage
+ getTarget (if isCross then succStage executableStage else executableStage) f
+ -- | 'targetSupportsSMP' lifted to the library stage (see 'getLibTarget').
+ libStageSupportsSMP stage = do
+ isCross <- crossStage stage
+ targetSupportsSMP (if isCross then succStage stage else stage)
-- | Given a 'String' replace characters '.' and '-' by underscores ('_') so that
-- the resulting 'String' is a valid C preprocessor identifier.
@@ -481,42 +563,37 @@ ghcWrapper stage = do
-- | Generate settings file, optionally including @LibDir@.
--
+-- Describes the compiler whose stage is the ambient 'Expr' context
+-- (available here as @executableStage@ via 'getStage'). The @libraryStage@
+-- argument is the stage whose lib dir holds the libraries the described
+-- compiler links against — used both for the @base@ unit-id lookup and for
+-- the @LibDir@ entry. It usually equals @executableStage@ but differs when
+-- the compiler links against libraries from a different stage (cross
+-- compilers, or the Stage0 bootstrap compiler using Stage1's libraries).
+--
-- @rel_pkg_db@: package DB path relative to the lib dir (e.g.
-- "package.conf.d"). Callers supply the correct relative path. For bindists
--- the layout is known statically; for in-tree builds callers compute it. For
--- bindists, we omit @LibDir@ so it defaults to @topDir@ at runtime.
-generateSettings :: FilePath -> Bool -> FilePath -> Expr String
-generateSettings settingsFile includeLibDir rel_pkg_db = do
+-- the layout is known statically; for in-tree builds callers compute it.
+-- For bindists, we omit @LibDir@ so it defaults to @topDir@ at runtime.
+generateSettings :: FilePath -> Bool -> FilePath -> Stage -> Expr String
+generateSettings settingsFile includeLibDir rel_pkg_db libraryStage = do
ctx <- getContext
- stage <- getStage
+ executableStage <- getStage
+
+ base_unit_id <- expr $ pkgUnitId libraryStage base
- -- The unit-id of the base package which is always linked against (#25382)
- base_unit_id <- expr $ do
- case stage of
- Stage0 {} -> error "Unable to generate settings for stage0"
- Stage1 -> pkgUnitId Stage1 base
- Stage2 -> pkgUnitId Stage1 base
- Stage3 -> pkgUnitId Stage2 base
-
- -- For cross compilers, LibDir points to the succeeding stage's lib dir
- -- (which contains the target architecture's libraries). For non-cross,
- -- it points to the preceding stage's lib dir as usual.
- let compilerStage = predStage stage -- the GHC that builds packages in this stage
- isCrossLibDir <- expr $ crossStage compilerStage
- let stage_dir_stage = if isCrossLibDir then stage else compilerStage
-
- -- addTrailingPathSeparator is needed because makeRelativeNoSysLink uses
- -- splitPath internally, where "lib" and "lib/" are distinct components.
- lib_topDir :: FilePath <- expr $ addTrailingPathSeparator <$> stageLibPath stage_dir_stage
+ lib_topDir :: FilePath <- expr $ addTrailingPathSeparator <$> stageLibPath libraryStage
let rel_lib_topDir = makeRelativeNoSysLink (dropFileName settingsFile) lib_topDir
settings <- traverse sequence $
- [ ("unlit command", ("$topdir/../bin/" <>) <$> expr (programName (ctx { Context.package = unlit, Context.stage = compilerStage })))
- , ("Use interpreter", expr $ yesNo <$> ghcWithInterpreter compilerStage)
- -- Hard-coded as Cabal queries these to determine way support and we
- -- need to always advertise all ways when bootstrapping.
- -- The settings file is generated at install time when installing a bindist.
- , ("RTS ways", unwords . map show . Set.toList <$> getRtsWays)
+ [ ("unlit command", ("$topdir/../bin/" <>) <$> expr (programName (ctx { Context.package = unlit })))
+ , ("Use interpreter", expr $ yesNo <$> ghcWithInterpreter executableStage)
+ -- Advertise the RTS ways that will actually ship with the compiler
+ -- described by this settings file, i.e. the ways the @libraryStage@
+ -- RTS is built with.
+ -- The settings file is regenerated at install time when installing a bindist.
+ , ("RTS ways", unwords . map show . Set.toList <$>
+ expr (interpretInContext (vanillaContext libraryStage rts) getRtsWays))
, ("Relative Global Package DB", pure rel_pkg_db)
, ("base unit-id", pure base_unit_id)
]
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/265b473308767b8299ba5cbf70b813…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/265b473308767b8299ba5cbf70b813…
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[Git][ghc/ghc][wip/supersven/hadrian-cross-stage3] 165 commits: hie.yaml: use a polyglot shell/batch script
by Sven Tennie (＠supersven) 10 Oct '26
by Sven Tennie (＠supersven) 10 Oct '26
10 Oct '26
Sven Tennie pushed to branch wip/supersven/hadrian-cross-stage3 at Glasgow Haskell Compiler / GHC
Commits:
9df24b7e by sheaf at 2026-08-10T14:28:30-04:00
hie.yaml: use a polyglot shell/batch script
This commit merges hie-bios and hie-bios.bat into a single polyglot
script. This avoids Windows users having to manually update hie.yaml
in order to be able to use HLS.
- - - - -
7f75c588 by Alan Zimmerman at 2026-08-10T14:29:11-04:00
EPA: Remove type parameter from AnnList
This is a step towards cutting AnnList down to its core for formatting
lists only
- - - - -
e8d1a0d6 by Bernhard M. Wiedemann at 2026-08-10T21:31:23-04:00
driver: Link object files in a deterministic order
The object files handed to the linker come from the HomePackageTable,
which is ordered by the order in which modules finished compiling. With
-j1 that is the build plan order, with -jN it is whatever the scheduler
produced, so the same sources can link to different (but equivalent)
binaries.
The order reaches the output: .text and .rodata contributions are
concatenated in link order, so e.g. building the hdav executable of the
DAV package twice, once with -j1 and once with -j4, yields two binaries
that differ in ~100kB of section contents.
Sort the home modules by module before collecting their linkables,
guarded under `Opt_ObjectDeterminism` .
Fixes #27612
Signed-off-by: Bernhard M. Wiedemann <bwiedemann(a)suse.de>
- - - - -
556db2f3 by sheaf at 2026-08-10T21:32:06-04:00
Reduce SpecConstr threshold in GHC.Tc.Solver.Rewrite
As remarked in #27628, this module currently sits on a knife's edge: if
the body of 'simplifyArgsWorker' is made even a tiny bit smaller, then
SpecConstr suddenly kicks in and causes disastrous reboxing of the
LiftingContext argument.
To make this less likely to happen, this commit lowers the SpecConstr
threshold.
- - - - -
c77d88fc by sheaf at 2026-08-13T10:15:22-04:00
Allow rewriting in RuntimeReps for newtype ConPats
This commit implements PHASE 2 of the FixedRuntimeRep plan described in
Note [The Concrete mechanism] in GHC.Tc.Utils.Concrete for newtype
constructor patterns.
In short, GHC now accepts programs of the form
f (MkN x) = ...
in which the argument 'x' of the newtype constructor pattern 'MkN x'
has a representation that is not syntactically concrete, e.g. it can be
'Id IntRep' reducing to 'IntRep'. See T20363{,b,c} for examples.
There are two main parts to the implementation:
1. Typechecking, in GHC.Tc.Gen.Pat.tcDataConPat.
See Note [Typechecking newtype constructor patterns] in GHC.Tc.Gen.Pat.
2. Desugaring. We restructure the code for desugaring pattern matches
by allowing the scrutinised match variable to be casted. This allows
us to accumulate coercions and avoids creating binders at intermediate
types tha don't have a fixed RuntimeRep.
See the revamped Note [Match Ids] in GHC.HsToCore.Monad.
Fixes #20363
-------------------------
Metric Increase:
InstanceMatching
-------------------------
- - - - -
6ba9dd41 by Wolfgang Jeltsch at 2026-08-13T10:16:07-04:00
Improve the documentation of `--show-iface`
This change in particular gets rid of the claim that `--show-iface`
writes *the* contents of the interface file in question. It doesn’t do
that; it only writes those parts that are likely of interest to a human
reader.
- - - - -
4bd193fa by Sylvain Henry at 2026-08-13T10:17:00-04:00
RTS: fix LDV profiler's slop skipping (#27585)
processHeapForDead was the one heap scanner not updated for the slop
marker encoding introduced in #19048. It still assumed slop is zeroed:
while (p < bd->free && !*p) p++; // skip slop
so it stopped at the (StgWord)(-1) sentinel and passed it to
processHeapClosureForDead. IS_FORWARDING_PTR(-1) holds, hence a garbage
size was read out of LDVW and the scan ran off the block, tripping
ASSERT(p == bd->free) on a debug RTS and silently corrupting the census
otherwise.
The loop was hand-copied in four places, so factor it out into skipSlop
in ClosureMacros.h and use it in ProfHeap.c, Sanity.c, Printer.c and
LdvProfile.c.
Co-Authored-By: Claude Opus 5 (1M context) <noreply(a)anthropic.com>
- - - - -
1446bb03 by Zubin Duggal at 2026-08-13T10:17:48-04:00
hadrian: Fix links to remaining doc sites to not use the package hash for haddock links
In 07267f79d91169f474cacc8bcd38d76a6e97887d we changed hadrian to not include the package hash in the haddock
directory. This patch takes care of a few remaining links that were missed in that patch
Fixes #27671
- - - - -
257c3ed7 by Simon Jakobi at 2026-08-13T10:18:29-04:00
Testsuite: widen InstanceMatching acceptance window to 5% (#27673)
...in order to unblock CI.
Assisted-by: Claude Fable 5
- - - - -
e4cfaaa0 by Simon Peyton Jones at 2026-08-14T01:09:32+02:00
Major patch to re-engineer known-key names
This big patch implements the New Plan for known-key names,
described in #27013.
Read the big Note [Overview of known-key names] in GHC.Types.Name
Some things had to be reworked slightly to accomodate the new known-keys
design. A significant one was the generation of auxiliary KindRep
bindings, which was greatly simplified. Note [Grand plan for Typeable]
was updated accordingly. Another example: GHC.Internal.CString was
merged into GHC.Internal.Types.
Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com>
The couple hundreds of hours spent here by Rodrigo were sponsored by Well-Typed
Metrics: compile_time/bytes allocated
-------------------------------------
Baseline
Test Metric value New value Change
------------------------------------------------------------------------------------------
MultiComponentModules100(normal) ghc/alloc 24,312,779,672 24,990,470,432 +2.8% BAD
MultiComponentModulesRecomp(normal) ghc/alloc 601,924,960 621,884,888 +3.3% BAD
MultiComponentModulesRecomp100(normal) ghc/alloc 11,884,065,432 12,531,373,704 +5.4% BAD
MultiLayerModules(normal) ghc/alloc 3,861,537,072 3,706,919,512 -4.0% GOOD
T13701(normal) ghc/alloc 3,517,246,392 3,237,179,616 -8.0% GOOD
T13820(normal) ghc/alloc 28,961,056 29,663,208 +2.4% BAD
T14697(normal) ghc/alloc 472,044,184 443,550,048 -6.0% GOOD
T18140(normal) ghc/alloc 47,905,664 49,115,808 +2.5% BAD
T4801(normal) ghc/alloc 269,339,096 263,432,040 -2.2% GOOD
T783(normal) ghc/alloc 341,112,672 333,339,952 -2.3% GOOD
hard_hole_fits(normal) ghc/alloc 222,164,728 213,433,808 -3.9% GOOD
mhu-perf(normal) ghc/alloc 49,011,440 46,706,280 -4.7% GOOD
geo. mean +0.1%
minimum -8.0%
maximum +5.4%
All performance regressions were investigated in depth. The surviving
ones:
- MultiComponentModules100, MultiComponentModulesRecomp100,
MultiComponentModulesRecomp regresses because existing bugs that make
an additional implicit edge do too much redundant work: #27053 and #27461
- T13820, T18140, T10547, T13035 regress because we load an additional
interface and associated Names for GHC.Essentials.
-------------------------
Metric Decrease:
MultiLayerModules
T13379
T13701
T14697
T26989
T4801
T783
T9961
hard_hole_fits
mhu-perf
size_hello_artifact
size_hello_obj
size_hello_unicode
Metric Increase:
LinkableUsage01
LinkableUsage02
MultiComponentModules100
MultiComponentModulesRecomp
MultiComponentModulesRecomp100
T10547
T13035
T13820
T18140
T18698a
T18698b
T20049
-------------------------
Bumps submodule binary
Closes #27013
- - - - -
61665e79 by sheaf at 2026-08-14T01:09:33+02:00
Allow GHC.Essentials to be hidden
This commit overhauls several aspects of the known entity handling,
in order to allow GHC.Essentials to be hidden without a proliferation
of special cases in the compiler.
The main contribution is to introduce the 'UnresolvedImport' datatype
which cleans up a lot of ad-hoc handling relating to 'ModSummary',
fixing #27603. This allows us to reduce duplication, e.g. by having
Backpack reuse 'mkUnresolvedImports' instead of replicating the
"add implicit imports" logic. It also makes it easier to avoid
undesirable edge cases (such as making sure that the Template Haskell
'reifyModule' function does not leak the implicit GHC.Essentials import).
In particular, the infamous 'findImportedModuleWithIsBoot' is now simply
'resolveImport', taking a single 'UnresolvedImport' and resolving it
to a 'FindResult' (usually a 'Module').
Other changes:
- Cache the result of looking up GHC.Essentials (in TcM and DsM
environments) to avoid redundant work.
This reduces allocations on LinkableUsage01 and hard_hole_fits.
- Properly look up known entities for StaticPointers like we do for
other known entities everywhere else. This allows e.g. modules in
ghc-internal to use -XStaticPointers.
- When using multiple home units, we are now careful to handle the
situation in which we may have multiple GHC.Essentials modules
around. See the new tests under 'driver/multipleHomeUnits'.
- - - - -
b19fcc1c by Vladislav Zavialov at 2026-08-14T06:26:11-04:00
Increase test coverage of diagnostics, batch 2
Add test cases for the previously untested diagnostics:
[GHC-26133] TcRnForeignImportPrimSafeAnn
[GHC-68444] SumAltArityExceeded
[GHC-63966] IllegalSumAlt
[GHC-23882] IllegalDeclaration
[GHC-60220] InvalidCCallImpent
[GHC-18816] RecGadtNoCons
[GHC-38140] GadtNoCons
[GHC-37056] InvalidTypeInstanceHeader
[GHC-78486] InvalidTyFamInstLHS
[GHC-39639] DefaultDataInstDecl
[GHC-78822] AssocDefaultNotAssoc
[GHC-43510] NotSimpleUnliftedType
[GHC-41843] IOResultExpected
[GHC-07641] AtLeastOneArgExpected
[GHC-52886] InvalidTopDecl
Remove unused error constructors:
[GHC-92057] ImportLookupAmbiguous
- - - - -
7b27f25a by Simon Jakobi at 2026-08-14T06:26:54-04:00
testsuite: Drop peak_megabytes_allocated from LinkableUsage tests
LinkableUsage01/02 collected all metrics with a 2% tolerance. For
peak_megabytes_allocated, whose granularity is 1 MB, that window is
under 0.7 MB at this test's ~34 MB peak, so any 1 MB step failed the
test (#27613, #27489). Drop that metric: max_bytes_used guards the
Linkable-retention property with byte granularity, at a tolerance
that still comfortably exceeds the noise observed in CI.
Assisted-by: Claude Fable 5
- - - - -
e5de423b by Simon Jakobi at 2026-08-14T06:26:54-04:00
testsuite: Don't truncate fractional baselines when computing bounds
RelativeMetricAcceptanceWindow.get_bounds truncated the baseline with
int() before applying the tolerance. Baselines can be fractional (they
are averaged over several measurements), so this skewed the acceptance
window downwards: in #27613, a baseline of 33.67 at 2% tolerance
yielded bounds (32, 34) instead of (32, 35), rejecting a measurement
that was within tolerance.
Assisted-by: Claude Fable 5
- - - - -
db959f83 by Simon Jakobi at 2026-08-14T15:16:44-04:00
testsuite: Expect length001 failure in nonmoving_thr_sanity
length001 relies on an optimization rule to avoid excessive stack use.
The nonmoving_thr_sanity way does not enable optimization, so classify
its stack overflow as an expected failure, as is already done for the
other unoptimized nonmoving ways.
Assisted-by: gpt-5.6-sol via Codex CLI
- - - - -
4f2b7d90 by Simon Jakobi at 2026-08-14T15:16:44-04:00
testsuite: Omit T22859 in nonmoving threaded ways
T22859 checks allocation-limit handlers with output that depends on
precise allocation behaviour. The nonmoving threaded ways change where
these limits are reached, just as the already-omitted LLVM ways do.
Omit these ways instead of treating their incidental output differences
as test failures.
Assisted-by: gpt-5.6-sol via Codex CLI
- - - - -
c4abddcb by Simon Jakobi at 2026-08-14T15:16:44-04:00
rts/js: Implement eq_thread, and test Eq/Ord ThreadId (#16761)
Since d1f3c63701, Eq ThreadId is implemented via the RTS function
eq_thread, but the JS RTS never provided it, so comparing ThreadIds
for equality on the JS backend crashed with
ReferenceError: h$eq_thread is not defined
Like the C implementation, h$eq_thread uses pointer equality: The JS
RTS has exactly one thread object per thread.
Since previously no test exercised eq_thread directly, this commit
adds a test covering equality, its stability across GC, and agreement
with Ord.
Assisted-by: Claude Fable 5
- - - - -
4a7defa1 by Simon Jakobi at 2026-08-14T15:16:44-04:00
testsuite: Make listThreads1 insensitive to the RTS's own threads
listThreads1 expected `listThreads` to return exactly [ThreadId 1]. That
holds only under a non-threaded RTS. Under a threaded RTS however there
are more threads present, so we change the test to simply check that
`myThreadId` is present in the list.
Assisted-by: Claude Opus 5
- - - - -
b757727a by Vladislav Zavialov at 2026-08-14T15:17:27-04:00
Fix tcLookupId panic with RequiredTypeArguments and PatternSynonyms (#27586)
The arguments declared on the left-hand side of a pattern synonym are looked up
as term variables bound by its right-hand side. Prior to this patch, that lookup
panicked with RequiredTypeArguments:
data T a where
MkT :: forall a -> T a
pattern P :: Int -> T Int
pattern P x = MkT x
On the RHS, `x` looks like a term argument, so the renamer binds it in the term
namespace. Only during type checking does it turn out to be a type variable, so
the lookup on the LHS finds an ATyVar rather than an ATcId. As the lookup was
done with tcLookupId, it resulted in a panic.
Now the arguments are looked up with tcLookupPatSynArg, which reports an illegal
term-level use of `x`, just as an ordinary function definition `f (MkT x) = x`
does.
Test cases: T27586a T27586b T27586c
Assisted-by: Claude Opus 5
- - - - -
c130188d by Rodrigo Mesquita at 2026-08-15T06:29:53-04:00
loopImports: Don't dup ms_uid in summary imports
We were writing the ms_unitid of the mod summary with every single
import of that module
That complicated the code (as though the UnitId in that list could ever
be something else) and also allocates unnecessarily per every mod
import. Very slight allocation decrease measured locally in a few tests:
(MultiComponentModulesRecomp: -0.06%; MultiComponentModulesRecomp100: -0.05%)
Purely a clean up.
- - - - -
c71166a8 by Rodrigo Mesquita at 2026-08-15T06:29:53-04:00
downsweep: make control flow simpler and cache correct
This refactor extracts the control flow of downsweep into a single
function `dfsBuild`, which takes care of iteratively expanding and
traversing all nodes of the in-construction module graph necessary to
build a full `ModuleGraph`.
There are three levels of caching going on, all of which are necessary
to make sure we don't do repeated work (notably, NEVER summarise the
same module twice).
1. `dfsBuild` accumulates the final module graph and never revisits the
same node of the module graph. Cache is keyed by the final
`ModuleGraph`s `NodeKey`s.
2. For Module A in home-unit u1, each import in the list of imports
needs to be *found* (call to `findImportedModuleWithIsBoot`): at this
point, we only have the `ModuleName` of the import, not the `Module`.
This *finding* is somewhat expensive, so we cache it as well
(`ImportsCache`). The cache key is the home-unit to which the module
belongs~[1], the import package qualifier, and the ModuleName.
[1] Different home-units will have different package flags, which means
potentially different `Module` resolution for the same `ModuleName`.
3. The most expensive operation we want to avoid is summarising a
`Module` into a `ModSummary`, which notably involves parsing the
module header from scratch.
The third cache, in essence, maps a `Module` to its `ModSummary`
(named `ModSummaryCache`). This cache upholds the invariant: we NEVER
summarise the same module twice. In practice, the cache key is the
Module's UnitId and the Source path; the reason is we need to
distinguish between `.hs` and `.hs-boot` files, as their summaries
will differ.
Note that (2) can't guarantee this alone: Two ModuleName imports in
separate units can (and likely do) map to the same `Module`.
Note that the previous implementation failed to achieve the
no-duplicate-work summarisation invariant, and we ended up doing a
quadratic amount of processing in scenarios like test
`MultiComponentModules100`.
See also Note [Downsweep Control Flow and Caching]
Fixes #27461
Perf changes:
MultiComponentModules(normal) ghc/alloc 2,097,389,264 1,992,186,736 -5.0% GOOD
MultiComponentModules100(normal) ghc/alloc 24,310,173,770 21,293,867,360 -12.4% GOOD
MultiComponentModulesRecomp(normal) ghc/alloc 602,761,394 498,543,984 -17.3% GOOD
MultiComponentModulesRecomp100(normal) ghc/alloc 11,885,968,240 8,895,404,864 -25.2% GOOD
-------------------------
Metric Decrease:
MultiComponentModules
MultiComponentModules100
MultiComponentModulesRecomp
MultiComponentModulesRecomp100
-------------------------
- - - - -
ebc4047b by Rodrigo Mesquita at 2026-08-15T06:29:53-04:00
implicitRequirementsShallow can never reach HoleUnit
findImportedModule will never return `HoleUnit` for a `ModuleName`
(a `HoleUnit` can only be found as a signature instantiation, never as a
directly *imported* thing)
Therefore, we can drop `[ModuleName]` returned by
`implicitRequirementsShallow`, which makes many things dead code.
Namely, the call to `implicitRequirementsShallow` from
GHC.Driver.Downsweep which was a performance bottleneck (for doing lots
of duplicate work in findImportedModule) is now entirely gone.
Fixes #27053
In an MR with this patch and the downsweep refactor (previous commit), CI says:
MultiComponentModules(normal) ghc/alloc 2,097,396,728 1,943,662,304 -7.3% GOOD
MultiComponentModules100(normal) ghc/alloc 24,310,182,136 17,227,574,440 -29.1% GOOD
MultiComponentModulesRecomp(normal) ghc/alloc 602,769,518 449,973,656 -25.3% GOOD
MultiComponentModulesRecomp100(normal) ghc/alloc 11,885,976,408 4,828,894,160 -59.4% GOOD
-------------------------
Metric Decrease:
MultiComponentModules
MultiComponentModules100
MultiComponentModulesRecomp
MultiComponentModulesRecomp100
-------------------------
- - - - -
85a6ab01 by Rodrigo Mesquita at 2026-08-15T06:29:53-04:00
downsweep: Cache negative results
When traversing a module graph structure, a uniquely identified node
should always expand to the same thing.
I don't see how visiting the same node which failed to be expanded a
first time would ever successfully expand the second time we try to
expand it (eg. when coming from a different edge to it -- it is still
the same node!). The node expansion is local, based just based on the
node itself, not on the path to get there.
Therefore, this patch removes the weird behavior and commentary of
`dfsBuild` wrt to `Nothing` not being cached and being potentially
expanded a second time around to something different, which was
misleading and, ultimately, incorrect.
Now, we have a `MGRes`, which is more explicit about a node being
Skipped just being a node that is ignored whenever it is found (and that
skip is cached) -- and we may want to do this due to failures or due to
just trying nodes which might not work on purpose, like hs-boots.
We uniformly cache positive and negative results and remove the
assumption that there might be an ordering in which the same node
visited at a later time might be expanded differently.
This makes it possible to traverse the module nodes in parallel without
a change in behavior, since there's no longer a hidden ordering
requirement.
- - - - -
56747c3f by Rodrigo Mesquita at 2026-08-15T06:29:53-04:00
Organize and clean-up GHC.Driver.Downsweep
Simply some cosmetic changes, moving definitions around to structure the
module better into its relevant sections
(In go (ns ++ ss), it's not a problem to use ++ because it's a good
producer and we won't have to append fully before processing the next
item in go)
- - - - -
12f64118 by Wolfgang Jeltsch at 2026-08-15T06:31:12-04:00
Add support for textual output of bytecode file content
- - - - -
a737df91 by Brandon Chinn at 2026-08-15T12:40:25-04:00
Add law in qualified strings doc
- - - - -
e3188581 by Zubin Duggal at 2026-08-15T12:41:06-04:00
DmdAnal: Fix maxDmdType
We need to eta expand the smaller DmdType using defaultArgDmd, like in lubDmdType.
Introduce zipDmdType as a common combinator to implement both maxDmdType and lubDmdType
uniformly.
fixes #27626
- - - - -
ca9b0b22 by mangoiv at 2026-08-15T12:41:47-04:00
hadrian: set the executable bit for hie-bios.bat
- - - - -
1aac7095 by sheaf at 2026-08-16T04:37:16-04:00
Avoid wasteful allocations in mkTyConAppCo
The idiom "traverse isReflCo_maybe" followed by "map fst" used in
'GHC.Core.Coercion.mkTyConAppCo' was allocating a lot of waste.
This commit uses 'GHC.Data.Unboxed.traverseMaybeUB' to avoid all these
unnecessary intermediate allocations.
In a quick microbenchmark for 'mkTyConAppCo', this change resulted in:
- refl case (all argument coercions are reflexive):
- -60% runtime
- -80% allocations
- non-refl case:
- from 0% to -12% runtime (depending on which argument is non-refl)
- from 0% to -70% allocations ( -- '' -- )
Fixes #27648
-------------------------
Metric Decrease:
FamAppCachePerf
SimplCastPerf
T12425
T15703
T26426
T3064
T9872a
T9872b
T9872b_defer
T9872c
T9872d
T5321Fun
T9020
T9630
TcPlugin_RewritePerf
Metric Increase:
LinkableUsage02
-------------------------
- - - - -
3915e982 by Alan Zimmerman at 2026-08-16T04:37:58-04:00
EPA: Remove al_trailing from AnnList
It was not being used
- - - - -
fed942ac by Andreas Klebinger at 2026-08-17T12:11:57-04:00
testsuite: Use sigkill in process009.
SIGHUB might have been blocked by a (grand)*parent of the test.
In such cases the test would fail as the python process would simply
exist gracefully instead of committing to a premature end.
By using SIGKILL we can rely on the signal not being blocked, fixing #27578
in the process.
- - - - -
574c875f by Andreas Klebinger at 2026-08-17T12:12:39-04:00
Simplify comparison in DFM.hs
Fixes #27669
- - - - -
d8f1a2a3 by Alan Zimmerman at 2026-08-17T12:13:18-04:00
TTG: Add extension points to BooleanFormula
They are currently unused, but will be used for exact print
annotations next, allowing us to get rid of LocatedBF / SrcSpanAnnBF
- - - - -
93a2b20f by Andreas Klebinger at 2026-08-18T04:31:04-04:00
Fix a number of incorrect module references:
Fix module reference in Note [DataCon wrappers are conlike].
Fix module reference in Note [Detailed InertCans Invariants].
Fix module reference in Note [GHC's data format representations].
Fix module reference in Note [Grand plan for static forms].
Fix module reference in Note [How tuples work].
Fix module reference in Note [Solved dictionaries].
Fix module reference in Note [Stacktraces from Info Table Provenance Entries (IPE based stack unwinding)].
Fix module reference in Note [The VarBndr type and its uses].
Found the incorrect references with a llm.
- - - - -
eb0dfb01 by Simon Jakobi at 2026-08-18T04:31:44-04:00
ci: Run stack-hadrian-build only in full-ci pipelines
The job exists to catch changes that break hadrian/build-stack (#18726),
but nothing in the pipeline depends on it, and it can only break when
hadrian's dependencies change. Restricting it to full-ci (like
hadrian-multi) still covers marge-bot merge batches, so such breakage
cannot reach master unnoticed, while ordinary validate pipelines skip
the job.
Assisted-by: Claude Fable 5
- - - - -
b9160962 by Simon Jakobi at 2026-08-20T14:57:52-04:00
testsuite: Show baseline sample count and range in perf failures
A perf baseline is the mean of all samples recorded for a commit, and
it prints as a single number, hiding how far the samples spread. When
the spread is wide, this can indicate an unstable metric that isn't
actually useful as a signal for the perf tests.
For example, in #27602, T27336's peak_megabytes_allocated baseline
showed as 757 when the underlying samples were 605 and 909.
When the baseline is averaged from more than one sample, say so in the
failure output: the one-line stat-failure reason shows the sample
range, and the detail block lists the raw samples. Single-sample
baselines print exactly as before.
Context: #27602
Assisted-by: Claude Fable 5
- - - - -
a4979877 by Simon Jakobi at 2026-08-20T14:57:52-04:00
testsuite: Fold Baseline into CommitMetric
A Baseline was just a CommitMetric plus the commit it came from, built
by copying fields across. Since get_commit_metric already knows that
commit, record it on CommitMetric itself and drop Baseline. This also
collapses both branches of find_baseline into plain returns.
Assisted-by: Claude Fable 5
- - - - -
99fb8d68 by Simon Jakobi at 2026-08-20T14:57:52-04:00
ci: Clarify comment on pushing perf notes after failures
Context: #27602
Assisted-by: Claude Fable 5
- - - - -
2ca87972 by Alan Zimmerman at 2026-08-20T14:58:36-04:00
EPA: Remove LocatedBC / SrcSpanBF
The custom annotations are now in the BooleanFormula TTG extension
points, so LBooleanFormula can now use the standard LocatedA.
- - - - -
d2bc32aa by Simon Peyton Jones at 2026-08-21T12:59:26-04:00
Better handling of serialisation of wired-in names
Fixes #27501
- - - - -
d2795ffc by Alan Zimmerman at 2026-08-21T13:00:05-04:00
EPA: Remove NoEpTok/NoEpUniTok, using an unhelpful SrcSpan instead
Also introduce helper functions noEpTok and noEpUniTok to serve
as simple replacements in code inserting an token annotation without
location information.
- - - - -
b5d29ab8 by Brandon Chinn at 2026-08-25T18:42:08-04:00
Add Data.RealFloat and Infinity/NegInfinity/NaN pattern synonyms (#26961)
- - - - -
e60eb3bc by Andreas Klebinger at 2026-08-25T18:42:59-04:00
rts linker: Fix pointer arithmetic issue in flushInstructionCacheRISCV64
We accidentally operated over `uint64_t*` when we should use `uint8_t`.
Fixes #27569
- - - - -
e9bbe8f9 by Andreas Klebinger at 2026-08-26T15:09:23-04:00
cmm dumps: Add machop width info with -dppr-debug for infix ops.
- - - - -
86e3a9d8 by Andreas Klebinger at 2026-08-26T15:09:24-04:00
CmmLint: Check for unsupported MachOp widths
machOpArgReps now maps MachOp + Width to a list of supported
argument widths or Nothing if the given operation is not supported
at the given width.
This allows us to check for nonsensical combinations like FloatToInt
at Word16.
Similarly we now check that every address is actually wordwidth.
- - - - -
13781cca by Andreas Klebinger at 2026-08-26T15:09:24-04:00
arm64 ncg: The big subword truncation fix.
A set of slightly related fixes to arm subword handling:
Bitmask immediates:
Don't produce overflowing assembly literals.
There is still another bug here that causes us to miss some valid
literals but we will fix that later.
Improve subword truncation handling:
We now use a small set of helpers to truncate `Register` values rather
than truncating immediate `Reg` values which greatly simplifies the code
structure. This fixes a great many bugs to do with sign/zero extending subwords
or the lack thereof.
We now establish the invariant that subword values are zero-extended at
every site at which they come into "scope" of the ncg, and rely on the
invariant throughout rather than pessimistically inserting redundant
extensions in a hodgepodge manner at the use sites of these values.
This fixes at least the bugs described in issues #27533, #27430
#27537, #27538, #27539, and #27550. But likely more bugs yet not
found.
Subword ffi results:
Apply truncations when calling functions returning
subword values.
genCondJump:
Don't sign extend signed values in the input register as
it might map to a local variable, corrupting the value stored within.
Fix subword store/load instructions.:
We used to read those at 32bit width even for smaller values possibly
resulting in invalid memory access. Now we construct the suffix for
subword variants based on the instruction format for these.
- - - - -
d8fa5d7c by Andreas Klebinger at 2026-08-26T15:09:24-04:00
arm64 ncg: Fix MO_V_Broadcast for non-literals.
We now use OpReg instead of OpScalarAsVec as required since we broadcast a gp register.
Also adds a test. Fixes #27565.
- - - - -
94822c95 by Andreas Klebinger at 2026-08-26T15:09:24-04:00
Add some test cases covering bugs in the arm ncg.
* Test for #27430 (subword ffi results)
* #27537 - subword conversions
* #27538 - subwords used in conditional
* #27533 - single byte read
- - - - -
dd1ba88a by Andreas Klebinger at 2026-08-26T15:09:24-04:00
cmmLint: Lint against MO_FS_Truncate subword use.
- - - - -
fd22f71e by Zubin Duggal at 2026-08-26T15:10:20-04:00
ghc-internal: annotateSTM should use catchSTM# rather than catch#
A catch# frame inside a transaction breaks retry and async exception
delivery.
Fixes #27657
- - - - -
bb324171 by Rodrigo Mesquita at 2026-08-26T15:10:59-04:00
rts: refactor to reduce THREADED_RTS in MSG_UPD_TSO_FLAGS
- No behavior change in this commit (well, a small optimization here
makes us do less work if the target TSO owned by the curr. capability)
- Move all THREADED_RTS CPP needed into `updThreadFlag`
- Merge MSG_SET_TSO_FLAGS and MSG_UNSET_TSO_FLAGS into MSG_UPD_TSO_FLAGS
plus a `set` bool field in the MessageUpdTSOFlag struct
Towards #27729
- - - - -
ed99b7b7 by Rodrigo Mesquita at 2026-08-26T15:10:59-04:00
rts: Fix race condition in MSG_UPD_TSO_FLAGS execution
The code for processing the MSG_UPD_TSO_FLAGS message was not taking
into consideration that the TSO's owner might have moved in between that
capability receiving the message (since it was its previous owner) and
starting to process its inbox (a point at which it was no longer the
owner)
Added Note [TSO owner may change in between Msg being sent and received]
to explain this race and the pattern used to fix this, where we just
forward the message to the new owner.
Fixes #27729
- - - - -
cd653714 by Alan Zimmerman at 2026-08-26T15:11:49-04:00
EPA: Uses Parsers.parseModule for exactprint tests
Parsers.parseModule is the advertised way to parse for use for exact
printing in the ghc-exactprint library. This commit updates the GHC
exact print testing to use it.
This requires moving the comment balancing that was occurring
only in the test path into the advertising parser path, so it moves
from Transforms.hs to Utils.hs.
Also update the comment adding to honour trailing annotations
- - - - -
d1d01fa5 by Wolfgang Jeltsch at 2026-08-27T13:17:59+03:00
Add `rethrowSTM` and improve STM-related documentation
Adding `rethrowSTM` resolves #26758.
The implementation of `rethrowSTM` is completely analogous to the one of
`rethrowIO`.
The following is established for the documentation of `throwSTM` and
`catchSTM`:
* Both operations are directly described as analogs of their `IO`
counterparts.
* There is no reference to `throw` in the documentation of `throwSTM`,
because, although such a reference is great in the documentation of
`throwIO`, it is somewhat out of place in the documentation of
`throwSTM`.
* Instead of repeating part of `throwIO`’s documentation, the
documentation of `throwSTM` just recommends using `throwSTM` instead
of `throw` and references the corresponding arguments in the
documentation of `throwIO`.
- - - - -
06fde293 by fendor at 2026-08-28T06:06:44-04:00
GHCi: Fix order of `PackageDBFlag`s for interactive home unit
`PackageDBFlag`s are stored in reverse order of cli specification.
When sorting the `PackageDBFlag`s by longest common prefix, we need thus
to reverse the package db stacks before calculating the prefix.
We make sure to reverse the package db stack for the interactive home
unit to uphold that later specified package dbs overwrite earlier ones.
Resolved and adds regression test for #27640
- - - - -
024c4d04 by fendor at 2026-08-28T06:07:23-04:00
Reuse the UnitIndexCache after initialising multiple home units
- - - - -
55326fa0 by Alan Zimmerman at 2026-08-28T06:08:03-04:00
EPA: Some Haddock processing tweaks
These changes to the Haddock postprocessing should not change
behaviour, but just bring it more closely in line with the
original, changed at 44309cd377f
And add some haddock exactprint tests to show they work.
- - - - -
b3ddee95 by Andreas Klebinger at 2026-08-28T13:57:46-04:00
hadrian: Deprecate quickest flavour.
It was more of a trap for new users than actually beneficial so we
deprecate it and suggest quick+no_dynamic_libs to users instead.
- - - - -
a1d81390 by Andreas Klebinger at 2026-08-28T13:58:37-04:00
cmm: Always favour entry block during block deduplication.
We now always keep the first block in the CmmGraph. This way we avoid
the need to update the entry info table.
Failing to do so caused #27722.
Fixes #27722.
- - - - -
5bd65f00 by Andreas Klebinger at 2026-08-28T13:59:16-04:00
test: FamAppCachePerf - Only collect bytes allocated. Fixes 27747
- - - - -
ced53ce6 by mangoiv at 2026-08-29T07:15:24-04:00
nightlies: output yaml to file only
Previously we would just output the metadata to stdout
which risks that it's clobbered by incidental debugt output.
We now output to file only.
Fixes #27511
- - - - -
578bd185 by Andreas Klebinger at 2026-08-29T07:16:05-04:00
Specialise: Stop looping on recursive dictionaries in interestingDict
interestingDict now doesn't look through loopbreaker unfoldings.
Doing so would cause infinite loops on certain dictionaries.
Fixes #27705.
- - - - -
7bf546fc by Simon Peyton Jones at 2026-08-31T23:48:53-04:00
Never make an absent filler for a constraint type
mkAbsentFiller used isTerminatingType to decide, but that is not enough.
Consider
class Eq a => UC a where {}
let u :: UC Int -- UC Int is a "non-terminating type"
u = error "Absent"
let e :: Eq Int -- Eq Int is a "terminating type"
e = $p1UC u
We clearly must not make a filler for `e`, because we speculatively
evaluate it. But speculatively evaluating `e` forces `u`, so we must not
make one for `u` either.
Asking isDictTy instead is not enough either, because it does not catch a
constraint hidden behind an unreduced type family application:
type family F a :: Constraint
type instance F W = TC W
a :: F W => Int -> Int -- (F W) argument is absent
Oops! Entered absent arg Arg: irred
Type: F W
So play safe and use isPredTy: never make an absent filler for any
constraint-kinded type.
Fixes #27627
- - - - -
5f474953 by Zubin Duggal at 2026-08-31T23:48:53-04:00
Add tests for absent fillers at dictionary types
T27627 a unary class whose superclass is a non-unary class
T27627a ...whose superclass is a Constraint-kinded type family
T27627b ...whose superclass is a quantified constraint
T27627c a unary class applied to itself, (UC (UC (TC a)))
T27627e a (forall b. P b) dictionary that loops
- - - - -
cd5c6bcc by Zubin Duggal at 2026-08-31T23:48:53-04:00
An abstract TyCon may hide a unary class
A class declared in an hs-boot file is an AbstractTyCon inside the
module loop, and compiling the real declaration may reveal it to be a
UnaryClassTyCon.
- isTerminatingType returned True for such AbstractTyCons
- IfaceToCore set the unary flag to False in the DFunId
So we could end up speculating bottom dictionaries because inside a module
loop we see an UnaryClassTyCon as an AbstractTyCon
Use isTerminatingTyCon, which returns False for an abstract TyCon.
The Bool in DFunId is now a cache for isTerminatingTyCon, set in
mkDFunIdDetails.
Fixes #27704
- - - - -
abfc224a by Zubin Duggal at 2026-08-31T23:48:53-04:00
Specialise: don't replace dead args with absent fillers
specHeader decides an argument is dead by calling isDeadBinder on a binder of
the /optimised RHS/, then applies the filler to the /stable unfolding/
template instead. The two may differ, so the argument can be dead in
the RHS and not in the template.
The specialised function's unfolding then has an absent filler, and any call
site that inlines it evaluates the error thunk.
Dropping dead args in the specialiser is rarely worth it, to quote Simon,
"The later worker/wrapper pass will pick up the dead arg later if it is really dead. Keeps the specialiser simpler."
So instead of trying to check if the arg really is dead in the stable unfolding,
just drop the logic for dropping dead args in the specialiser altogeher.
Fixes #27703
- - - - -
1557fd1c by Zubin Duggal at 2026-08-31T23:48:53-04:00
CorePrep: don't speculate a call across an hs-boot edge
We take care not to evaluate things that might be bottom, like a
looping dictionary group, but our analysis is defeated by boot files.
We only track recursion within a module, so two dictionaries that
depend on each other across a module loop each look non-recursive, and
we might speculate them.
Any recursion we cannot see must cross an hs-boot edge, so refuse to
speculate calls that cross one.
Fixes #27717
- - - - -
4117e5ae by Wolfgang Jeltsch at 2026-08-31T23:49:35-04:00
Incorporate the `rethrowSTM` reexport into the `stm` submodule
- - - - -
4bfbf5c8 by ARATA Mizuki at 2026-09-01T18:55:08-04:00
testsuite: Fix out-of-bounds access in T3586
unsafeRead and unsafeWrite use 0-based index.
Looking at #3586, the expected output seems to be 2.8e8.
Addresses #27596
- - - - -
3f9db6d4 by ARATA Mizuki at 2026-09-01T18:55:08-04:00
testsuite: Fix out-of-bounds access in T21305
writeInt64Array# takes an index measured in units of Int64 elements.
Fixes #27596
- - - - -
44d7788f by Simon Peyton Jones at 2026-09-01T18:55:53-04:00
Fix buglet in INLINE-arity calculation for pattern synonyms
This fixes #27744.
The buglet was accidentally introduced by
commit 3a0f9a51c1dacc474c7fd128082edd8bf4081256
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Sat Aug 1 00:13:02 2026 +0100
Fix three bugs related to required type args and INLINE pragmas
I failed to find all the calls to `addInlinePragArity`!
- - - - -
df058f1d by Simon Jakobi at 2026-09-02T07:18:06-04:00
testsuite: Migrate perf tests off collect_compiler_stats('all')
The 'all' metric argument applies a single tolerance to bytes
allocated, max_bytes_used and peak_megabytes_allocated, although their
noise profiles are incompatible (#27653): allocations are nearly
deterministic, residency needs 10-20%, and peak is quantized to 1 MB.
Any single tolerance is too tight for one metric or too slack for
another. This migrates the remaining users of 'all' (and of the 'all'
default) to explicit per-metric collection, ahead of removing 'all'
from the driver.
peak_megabytes_allocated is dropped everywhere: its 1 MB granularity
makes tight relative windows meaningless (#27613), and it is sensitive
to GC timing. In #27489 it drifted by -5.3% while max_bytes_used moved
by less than 0.1%. Where a test guards a memory property,
max_bytes_used covers it at byte granularity.
Where the motivating ticket was about compile-time memory
(T11545, T15304, T26425), residency remains gated via max_bytes_used,
now with a residency-appropriate tolerance.
max_bytes_used is dropped where residency was only ever an accident of
'all':
* T15630, T15630a, T20261: the underlying tickets (#15630, #20261)
contain no memory data at all. One is a simplifier-ticks blowup and
the other is stated entirely in allocation numbers, so the 20%
window never had teeth.
* T21839c: #21839's measurements show residency essentially flat
(+0.16%) while allocations moved +7%, so allocations are the
discriminating metric. They are already gated at 1% via
collect_compiler_runtime. The ghc/max gate had previously broken CI
spuriously (9fd11585eb widened it from 1% to 10% for that reason).
Allocation tolerances are tightened to the testsuite's conventional 2%
where 'all' previously left them at 10-20%.
Assisted-by: Claude Fable 5
- - - - -
72dd2432 by Simon Jakobi at 2026-09-02T07:18:06-04:00
testsuite: Remove the 'all' metric argument of collect_stats
'all' gated bytes allocated, max_bytes_used and peak_megabytes_allocated
at a single tolerance, although their noise profiles are incompatible,
making such tests either flaky or toothless (#27653).
Closes #27653.
Assisted-by: Claude Fable 5
- - - - -
2228cb30 by Simon Jakobi at 2026-09-02T07:18:06-04:00
testsuite: Make the deviation argument of collect_stats mandatory
Almost every caller passes an explicit tolerance matched to the
metric's noise profile, and the silent 20% default is far slacker than
'bytes allocated' merits. Only two tests relied on it. They now state
their tolerance explicitly:
large-project gets 10%, in line with other large compile-time tests.
T9848 gets 2%: its metric is byte-for-byte deterministic across CI
jobs and platforms of a given test_env, has drifted only about 2.5%
since 2015, and the fusion failure it guards against would show up as
a roughly +30000% jump.
Assisted-by: Claude Fable 5
- - - - -
56291fc5 by Cheng Shao at 2026-09-02T07:18:45-04:00
autoconf/ghc-toolchain: bump llvm upper bound to support llvm 23
This commit bumps llvm upper bound to support llvm 23.
- - - - -
20eb3f41 by Cheng Shao at 2026-09-02T07:18:45-04:00
rts: fix compilation issues with clang 23
clang 23 has broadened `-Wall`/`-Wextra` ranges, exposing some minor
issues in the rts when building with validate flavours:
- Unused locals
- `#pragma GCC diagnostic pop` mismatch
This commit fixes those.
- - - - -
9e7739ab by Simon Jakobi at 2026-09-03T13:45:43-04:00
Add -Wimplicit-field-strictness (#16836)
This opt-in warning fires when a data constructor field lacks an
explicit strictness annotation (`!` or `~`). It complements the
LazyFieldAnnotations extension (4762a8bf30f) from GHC proposal 752,
which makes `~` annotations available for this purpose.
Deciding which fields to report requires their levity, so the check
runs after typechecking. To keep the noise down, the diagnostic is
emitted once per data declaration, grouped by constructor.
Closes #16836.
Assisted-by: Claude Fable 5
- - - - -
6a44d591 by mangoiv at 2026-09-03T13:46:22-04:00
simplifier: remove a bogus `assert` in `rebuild_app'` in `GHC.CoreToStg.Prep.cpeApp`.
Prior to this commit
commit 08bc245be70d95801bc1138804ed1de9474fbdc0
Author: sheaf <sam.derbyshire(a)gmail.com>
Date: Sat Feb 28 16:30:43 2026 +0100
Clean up join points, casts & ticks
This commit shores up the logic dealing with casts and ticks occurring
in between a join point binding and a jump
any `PlaceRuntime` ticks we observed were profiling ticks, even though that
isn't necessary.
The more liberal rules in the above commit allow e.g. breakpoint ticks
(which are valid PlaceRuntime ticks) to legitimately appear in an argument
position.
Fixes #27556
- - - - -
eaa95a6f by Andrei Borzenkov at 2026-09-04T08:08:40-04:00
Parentheses in prefix GADT constructors (#27423)
Updated `splitLHsGadtTy` to allow looking
through the parentheses for inner binders. General example
of a code pattern that's allowed now:
data S a where
MkS :: (forall a. S a)
That should work now with any combination of nested
foralls and parentheses.
We don't perform parenthesis unwrapping for record
GADT constructors in accordance with GHC Proposal #402.
To this end `con_inner_bndrs` no longer stores plain forall
telescopes: `[HsForAllTelescope pass]` is replaced with
`[LHsGadtTelescope pass]`, a new `HsArg`-style type whose
`HsGadtForAll` holds an inner telescope and whose `HsGadtPar`
holds a pair of parentheses. The parentheses carry no meaning
for renaming or type checking; the only reason to record them
is exact-printing.
Updated `pprConDecl` to improve the `parse == parse . ppr . parse`
property of GADT pretty-printing.
The pretty printer can now output code that's similar to this:
data T a where
MkT1 :: (forall a. T a)
MkT2 :: forall . forall a. T a
These are special cases of inner forall binders
for prefix GADT constructors, when we have either
implicit or zero explicit outer binders.
- - - - -
639456a8 by Evgeny Malyshev at 2026-09-04T08:09:25-04:00
HsPat: Add spacing to unary tuple patterns
Use hsep when printing unary boxed TuplePat applications so that the
MkSolo constructor is separated from its argument. The old hcat rendered
wildcard and parenthesized arguments as MkSolo_ and MkSolo().
Add T27034 to exercise the HsPat splice-dump path with wildcard and
variable arguments, and update existing affected golden output.
Fixes #27034
Assisted-By: OpenAI Codex
- - - - -
2908ab36 by Simon Jakobi at 2026-09-05T07:22:17-04:00
X86 NCG: use btr/bts/btc for single-bit operations
Previously the Cmm patterns
x & ~(1 << i)
x | (1 << i)
x ^ (1 << i)
compiled to mov/shl/not/and-style sequences of 3-4 instructions. Now
they compile to a single btr, bts or btc, matching what C compilers
produce.
When the bit index is a literal, constant folding has already collapsed
these patterns into ones with a literal mask, such as
x & 0xfffffeffffffffff for x & ~(1 << 40). Such masks are now also
compiled to a bit-test instruction when they don't fit in an imm32 and
would otherwise have to be loaded into a register first.
For a variable bit index, this applies only when the shift is unchecked
(uncheckedShiftL#, Data.Bits.unsafeShiftL): the bounds-checked shiftL
used by e.g. the default clearBit/setBit/complementBit implementations
wraps the shift in a bounds mask that this optimisation does not see
through. With a literal index, the bounds mask is constant-folded away,
so the checked operations benefit too.
See Note [Bit-test instructions] in GHC.CmmToAsm.X86.CodeGen.
Fixes #25233.
Assisted-by: Claude Fable 5
- - - - -
c673ecf0 by Simon Peyton Jones at 2026-09-05T07:22:59-04:00
Move HsStatic free-var test to typechecker
A `static` form should have no free *term* variables, but it
can have free *type* variables. Alas, the renamer does not really know what
is a term variable and what is a type variable, because of required type
arguments. This patch moves the test to the typechecker, which does know.
Addresses #27664
- - - - -
5939ceaf by sheaf at 2026-09-05T22:06:18-04:00
Windows: enforce path convention in ./configure
As detailed in Note [MSYS paths] in Hadrian.Utilities, the standing
convention (using Windows-style paths with forward slashes) is now
enforced in ./configure instead of within Hadrian, removing the need for
'cygpath' calls within Hadrian.
Fixes #26683
- - - - -
a6061455 by sheaf at 2026-09-05T22:06:18-04:00
Hadrian: introduce ExeSpawnPath
Specific details about the filepath used to specify the executable to
spawn with CreateProcess matters on Windows: whether we use forward or
backward slashes, a leading ./, or an absolute path changes how the
executable is found.
This commit introduces 'ExeSpawnPath' which is a path that is guaranteed
to be found when spawning a process. All command invocations now go
through this type to ensure the path has been properly sanitised.
See Note [NeedCurrentDirectoryForExePath] in Hadrian.Utilities.
The same treatment is applied to hsc2hs. Updates hsc2hs submodule.
- - - - -
e28313e3 by sheaf at 2026-09-05T22:07:06-04:00
Preserve tick ordering in 'tickTickedExpr'
'GHC.Core.Utils.tickTickedExpr' tries to combine a tick 't1' into an
existing stack of ticks 't2s'. There are two situations:
1. 't1' is subsumed by a tick in 't2s': drop it.
2. A tick in 't2s' is subsumed by 't1', say 't2'.
This commit ensures that in case (2) we keep 't1' on the outside instead
of replacing 't2' at its position in the stack. This avoids re-ordering
source notes (which was the cause of #27749).
This fixes a regression introduced in 2dadf3b0d05.
Fixes #27749
- - - - -
3172f557 by sheaf at 2026-09-05T22:07:06-04:00
Consistently prefer local source note ticks
GHC.Cmm.DebugBlock.cmmDebugGen (DWARF annotations) and
GHC.Stg.Debug.quickSourcePos (-finfo-table-map) both contained logic to
prioritise source note ticks from the current module.
This commit commons up this logic and propagates it to a third consumer:
IPE stack frames, in GHC.Driver.GenerateCgIPEStub.
See the new function GHC.Types.Tickish.bestSourceNote.
- - - - -
192be0b6 by Luite Stegeman at 2026-09-07T19:43:36-04:00
rts: fix ctoi_tuple_spill_words getting out of sync
Fix a few places that were not updating ctoi_tuple_spill_words
correctly, leading to corruption/crashes when dealing with large
unboxed tuples in bytecode:
- captureContinuationAndAbort
- findRetryFrameHelper/findAtomicallyFrameHelper
- interpretBCO bci_BRK_FUN
fixes #27633
- - - - -
604eb43c by Simon Jakobi at 2026-09-07T19:44:15-04:00
Hadrian: don't capture the testsuite driver's output (#27780)
a6061455d54 switched the Testsuite RunTest case from Shake's cmd to the
cmd' wrapper. cmd' always captures stdout and stderr, and since the
caller asks for Exit, it returns without dumping what it captured. As a
result the testsuite output no longer appears in CI job logs: failures,
performance metrics and the summary were lost with the job.
Use cmdExe, the uncaptured cmd, as the other plain-cmd sites in that
commit do.
Fixes #27780.
Assisted-by: Claude Fable 5.1
- - - - -
06eee015 by Luite Stegeman at 2026-09-08T06:03:06+02:00
rts: Fix missing memory barrier in eval_thunk_selector (#27477)
unchain_thunk_selectors() was missing an ACQUIRE_LOAD for the
indirectee, leading to segfaults and corruption during GC on
weakly-ordered architectures.
Fixes #27477
- - - - -
f8b2bd8f by Alan Zimmerman at 2026-09-08T09:39:12-04:00
EPA Fix HsCmdDo exact print with comments
Exact printing of HsCmdDo was ignoring the location for the do
statements, and this is an annotation that can have comments in it.
Update it so we print the statements as a unit, including any
comments.
Also add the result of auditing that we capture comments in all needed
places, noting that the remaining Anno SrcSpan instances are benign.
- - - - -
430967ab by Duncan Coutts at 2026-09-09T11:07:01+01:00
Reorder cmm decls in HeapStackCheck for a better logical grouping
And put more section headers in to deliniate the groups.
We're about to add more here, so better to organise it first.
- - - - -
344080fd by Duncan Coutts at 2026-09-09T11:07:01+01:00
Add raisePrimIOException and add it to RTS<->ghc-internal API
The raisePrimIOException is a new helper function that I/O primops will
use to help them report I/O errors. This is implemented in Haskell
(since that's a lot easier), but has a calling convention that is
easy(ish) to use from Cmm in the I/O primops.
So we add it to the RTS API struct, and since we'll use it from Cmm we
also need a field accessor macro for cmm (in deriveConstants).
See the Note about how we cannot have nice things due to async
exceptions and thunks preventing us from using catch.
- - - - -
cfdb3399 by Duncan Coutts at 2026-09-09T11:07:01+01:00
Add new blocking functions for I/O primops
See the Note [Thread blocking for new I/O primops],
and the Note [Calling convention for raisePrimIOException].
The point is, it will allow us to report synchronous exceptions from I/O
primops, and do so much more flexibly.
Previously the I/O managers could only report async exceptions and only
nullary exceptions. This was OK historically, but no good as we add
more I/O managers and expand the range of I/O operations we support.
- - - - -
f09c09d8 by Duncan Coutts at 2026-09-09T11:07:01+01:00
Change the encoding of results from the I/O manager to I/O primops
Previously we just had async continue or heap overflow.
We now extend what we can report with synchronous success, and
synchronous failure with an errno.
See Note [Encoding of result of I/O manager operations]
We don't use these two new cases yet, but we will. In particular an
epoll I/O manager needs to be able to report synchronous success or
failure for waitRead#/waitWrite#.
- - - - -
30f074d9 by Duncan Coutts at 2026-09-09T11:07:01+01:00
Switch waitRead/Write# to use new blocking return frames
and update the I/O managers to set the result before resuming the
blocked threads.
This makes it possible for I/O managers to report synchronous exceptions
from the I/O primops, but that will be done in a subsequent commit.
- - - - -
a8786ced by Duncan Coutts at 2026-09-09T11:07:01+01:00
Switch Poll and Select I/O managers to report sync exceptions
rather than using raiseAsync with blockedOnBadFD_closure.
This uses the new mechanism in the blocking frame return code to report
synchronous exceptions.
- - - - -
7a9df79a by Duncan Coutts at 2026-09-09T11:07:01+01:00
Remove now-unused blockedOnBadFD
It was previously thrown by the select and poll I/O managers, but now
they use raisePrimIOException (with an EBADF errno).
- - - - -
6b0424e3 by Duncan Coutts at 2026-09-09T11:07:01+01:00
Improve the docs for delay# waitRead# and waitWrite#
Document that the waitRead/Write# can throw exceptions (this was true
before too), and that all of them are async exception cancellation
points.
- - - - -
afeb2c30 by Duncan Coutts at 2026-09-09T20:08:58-04:00
Enable printf warnings for trace functions and fix resulting warnings
Most of the existing printf-style functions are annotated with
attributes to enable gcc/clang warnings for the printf format string,
but several trace functions in Trace.h were missing this annotation.
Enable them, and fix the resulting warnings.
- - - - -
9a442c93 by Alan Zimmerman at 2026-09-09T20:09:36-04:00
EPA: Exact print ConDeclGADT without custom enterAnn
!16321 brought in explicit capture of parens in a ConDeclGADT.
The ExactPrint update introduced a modification of the fundamental
function in exact printing, `enterAnn`, by splitting it into a version
allowing injection of functionality normally handled by the
ExactPrint class methods.
This commit refactors that code, to restore the prior `enterAnn`
version, by following the convention in ExactPrint of introducing a
helper data structure with its own `ExactPrint` instance to achieve
the same effect.
- - - - -
4e9297ea by Simon Jakobi at 2026-09-11T08:32:45-04:00
ci: Actually pass --ignore-perf-failures to the testsuite driver
684c0018d9 changed the IGNORE_PERF_FAILURES handling to append to
RUNTEST_ARGS with bash array syntax, but the three use sites still
expand RUNTEST_ARGS as a scalar, which yields only the first array
element. The appended flag was therefore dropped in every job, so
perf improvements kept failing Marge Bot batches and master pipelines,
contrary to #19562.
Append as a string instead, matching the existing --force-colors
append in test_hadrian.
Fixes #27563.
Assisted-by: Claude Fable 5.1
- - - - -
4f78dfdf by Simon Jakobi at 2026-09-11T08:33:24-04:00
testsuite: Give T26537 a 1.5x compile timeout
Its -fregs-graph compile step tends to time out in unoptimized builds
(#27188, #27776).
Assisted-by: Claude Fable 5.1
- - - - -
130286e3 by Alan Zimmerman at 2026-09-11T08:34:08-04:00
EPA: Remove ListBanana / ListParens from AnnListBrackets
This is a step towards making AnnList only represent
lists of items which can have either braces or layout.
- - - - -
a9827d13 by Simon Jakobi at 2026-09-11T18:53:32-04:00
Reject ~, UNPACK and multiplicity annotations on type data fields
Only `!` was rejected so far. `~`, UNPACK and multiplicity annotations
were silently accepted. None of them make sense at the type level, so
restriction (R3) of Note [Type data declarations] now covers all of
them.
Fixes #27732.
Assisted-by: Claude Fable 5.1
- - - - -
c71d5e23 by Alan Zimmerman at 2026-09-11T18:54:11-04:00
EPA: Add a Note for the exact print main loop
- - - - -
7a108e43 by Simon Jakobi at 2026-09-12T18:35:59-04:00
FastString: Drop mkFastStringWith's constructor callback
All three callers passed the same callback, a partial application of
mkNewFastStringShortByteString to the string being interned. That
partial application is allocated as a closure before the table lookup,
on the common hit path too, although the callback is needed only after
a miss.
Drop the parameter and call mkNewFastStringShortByteString directly
after a miss. Since nothing is passed "with" anymore, rename the
function to internSB.
Suggested by Simon PJ in #27528:
https://gitlab.haskell.org/ghc/ghc/-/work_items/27528#note_687031
Assisted-by: Claude Fable 5
- - - - -
82c73b22 by Alan Zimmerman at 2026-09-12T18:36:38-04:00
EPA: More targeted HsDo exact print annotation
HsDo is multi-purpose, as encoded in its HsDoFlavour field. Some of
these are in a layout context (DoExpr, MDoExpr), others are not
(ListComp, MonadComp).
We are moving towards using AnnList only in layout contexts, so we
switch the HsDo TTG annotation from holding an AnnList for this, to
holding
Either (EpToken "[", EpToken "]") AnnList
This also allows us to trim down AnnListBrackets to only have braces
or None, thereby opening the door for unification with the existing
layout context data type EpLayout.
- - - - -
749d2448 by Luite Stegeman at 2026-09-15T14:07:01-04:00
rts: handle large CONSTR closures in compacting GC
The function update_fwd_large in the compacting GC could run into
an unexpected object with the following error:
internal error: update_fwd_large: unknown/strange object 1
Closure type 1 is CONSTR. This patch adds cases for CONSTR and
CONSTR_NOCAF.
This is the same problem as #27434 (large AP closures, fixed by
cca0d58963), which missed this case.
Fixes #27649
- - - - -
177d6155 by Luite Stegeman at 2026-09-15T14:07:02-04:00
testsuite: fix T27434 test with compacting GC
Ensure that the interpreter is actually run with the compacting GC
- - - - -
5796aa63 by Luite Stegeman at 2026-09-15T14:07:49-04:00
rts: initialise the stack frame header for mask_frame and apply_mask_frame
We must leave the stack in consistent state before jumping to
mask_frame or apply_mask_frame because they may result. Failing
to do so could lead to a crash if there were waiting exceptions.
Fixes #27651
- - - - -
2486cc92 by Simon Peyton Jones at 2026-09-15T14:08:36-04:00
Re-introduce the "weird SpecDict" case
In this commit
commit f80375dd4945350a1d784e436975b48b9c736eaf
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Sun Jun 29 15:26:58 2025 +0100
Refactor of Specialise.hs
I removed a test for a dictionary with unbound type variables. This
turned out to be wrong; see #27629.
So this MR re-introduces it.
- - - - -
8e09a46f by Duncan Coutts at 2026-09-15T20:11:35-04:00
Refactor (and rename) removeFromQueues, to simplify I/O managers
Rename it to unblockAndAppendToRunQueue which better reflects what it is
intended to do.
The post-condition for unblockAndAppendToRunQueue is that the TSO is on
the run queue or it is in the process of migrating to another cap.
Previously it achieved that by always directly adding the TSO to the run
queue itself.
But this actually made things more complicated for the I/O managers,
because it meant they needed a separate code path for notifying for
cancellation compared to notifying for completion. The general
notification code would always add the TSO to the run queue itself.
So the improvement is to allow different cases in
unblockAndAppendToRunQueue to achieve the same outcome in different
ways: either directly adding to the run queue or calling helper
functions that do so themselves.
This then allows the new I/O managers to share code between the sync and
async cancellation, and to reuse their notifyIOCompletion helpers for
cancellation. This avoids a source of bugs where the completion path may
be updated but the cancellation path may be forgotten, or similarly in
future for sync/async operations.
Update all the existing in-RTS I/O managers, and the posix timeout code.
- - - - -
d668782c by Duncan Coutts at 2026-09-15T20:11:35-04:00
Document that awaitCompletedTimeoutsOrIO expects an empty run queue
This was true before but implicit and not relied on much. It's better to
be explicit, and allow things to depend on it.
- - - - -
11d938bb by Duncan Coutts at 2026-09-15T20:11:35-04:00
Store the I/O opcode and fd in the StgAsyncIOOp
This will be useful in several I/O managers and it is handy for logging
and debugging.
It also doesn't increase the size of the StgAsyncIOOp structure. There
was enough spare padding space already.
Update the poll I/O manager to set the new fields.
Add a helper function to convert the enum IOReadOrWrite into the enum
IOOpCode. Also change IOReadOrWrite to be an enum without a typedef, for
consistency with other enumerations in IOManager.h
- - - - -
bfa87882 by Duncan Coutts at 2026-09-15T20:11:36-04:00
Add a new I/O manager based on select()
Yes, this is the second such I/O manager, but it is a modern
re-implementation based on the new in-RTS I/O manager infrastructure. So
it is cleaner and faster than the old select I/O manager.
Why do we need another I/O manager based on select? Why isn't the poll()
one good enough as a baseline portable unix I/O manager? Because macOS.
Apple Inc. is why we cannot have nice things.
The man page for poll on macOS documents the fact that it does not work.
At least, it does not work for all files. Specifically, it does not work
for device files. Whereas macOS select() does work for device files.
Aaaaarg!
We _do_ want to deprecate and remove the old select I/O manager, but due to
macOS we cannot do that until we have a replacement. This is that
replacement. Until of course a nice new k-queue I/O manager arrives,
which could become the new default for macOS and FreeBSD.
Interestingly, this select I/O manager is actually faster than the poll
one, on Linix, in some circumstances: specifically when many Haskell
threads are waiting on the same fd. The poll I/O manager does O(n) work
for n threads waiting on I/O, whereas the select one does O(fds) work
for the number of fds that threads are waiting on. Usually this is 1:1,
so it's not noticable, but one can concoct extreme benchmarks to show
the difference.
- - - - -
8e9de15a by Duncan Coutts at 2026-09-15T20:11:36-04:00
Minor updates in the poll I/O manager to keep in sync with select
This keeps it in sync with select one. The changes are based on code review
while implementing the new select I/O manager. The two I/O managers are so
similar in structure that it makes sense to try to minimise the diff between
them. This should aid understanding, and fixes to both in future.
- - - - -
222668bb by Duncan Coutts at 2026-09-15T20:11:36-04:00
Document the new select I/O manager in the user guide
in the RTS section about I/O managers.
And add a changelog entry.
- - - - -
0f48735b by Cheng Shao at 2026-09-15T20:12:23-04:00
Revert "wasm: workaround WebKit bug in dyld"
This reverts commit c9b8465c2c338176fcab9d197e9d31f4aee11f68. The
underlying webkit bug has been fixed in
https://commits.webkit.org/314219@main. Closes #27564.
- - - - -
809294f1 by Luite Stegeman at 2026-09-15T20:13:08-04:00
rts: make stg_threadLabelzh return a valid pointer for unlabeled threads.
This fixes a segfault in the GC caused by stg_threadLabelzh returning
a 0 pointer in a GC pointer field.
stg_threadLabelzh returns a tuple of type (# Int#, ByteArray# #). If a
thread has no label, the second field is unused. We must still return
a valid heap object pointer.
Instead of returning 0, we now return stg_DEAD_SLOT_closure.
fixes #27618
- - - - -
e2d57026 by Luite Stegeman at 2026-09-15T20:13:54-04:00
JS: fix selector thunk handling
fix a bug where entering a selector thunk could lead to a crash
if the selected field was still a thunk.
fixes #27788
- - - - -
1b4a622f by sheaf at 2026-09-17T02:39:13-04:00
Improvements to type/data family handling
This commit makes several improvements to the treatment of type and data
families in GHC:
- We consistently use "type family" instead of "type synonym family"
to avoid a confusion with type synonyms. For example:
- OpenSynFamilyTyCon ==> OpenTypeFamilyTyCon
- ClosedSynFamilyTyCon => ClosedTypeFamilyTyCon
- Various functions that were specific to data families have been
renamed to make this clear. For example:
- tyConFamInst_maybe ==> tyConDataFamInst_maybe
- isFamInstTyCon ==> isDataFamInstTyCon
- 'FamTyConFlav' has been refactored so that all closed type families
share a single 'ClosedTypeFamilyTyCon' constructor.
The corresponding 'IfaceFamTyConFlav' type was updated similarly.
This is then used to tidy up the implementation of
GHC.Core.FamInstEnv.reduceTyFamApp_maybe.
- - - - -
c5aa9098 by sheaf at 2026-09-17T02:39:13-04:00
Small refactor of lookupFamInstEnv
This commit reworks the code for looking up family instances in
GHC.Core.FamInstEnv, reducing duplication a little bit.
No change in behaviour.
- - - - -
a3ad4588 by sheaf at 2026-09-17T02:39:14-04:00
Use a type family for boxing unboxed types
This commit overhauls the way in which unboxed types are boxed, as per
the updated Note [Boxing constructors] in GHC.Builtin.WiredIn.Types.Box.
The main change is to allow boxing to be parametrised by representation,
e.g. making 'Box ty' a valid type. We achieve this by implementing 'Box'
using a closed type family:
newtype Box (a :: TYPE r) = Box (BoxTF r)
type BoxTF :: RuntimeRep -> Type
type family BoxTF r where
BoxTF IntRep = BoxInt
BoxTF Int8Rep = BoxInt8
BoxTF WordRep = BoxWord
BoxTF LiftedRep = Any @Type
BoxTF (TupleRep [r1, r2]) = (BoxTF r1, BoxTF r2)
...
BoxTF (SumRep rs) = BoxSum rs
This new design solves the following problems:
- It allows boxing a type whose 'RuntimeRep' has not yet been
determined (e.g. because we only learn the 'RuntimeRep' after
constraint solving). That is, 'Box @r a' is a perfectly valid type
even if 'r' is an unfilled metavariable. This is a requirement
to fix #25065 (in which we need to box a type whose 'RuntimeRep'
is only filled in during constraint solving).
- It handles boxing of unboxed tuples and unboxed sums, via recursive
boxing. See Note [Boxing TupleRep and SumRep] in
GHC.Builtin.WiredIn.Types.Box.
'Box', 'BoxTF' and all of the boxing data constructors are defined in
a new 'ghc-internal' module, 'GHC.Internal.Box'. This module contains
nothing but wired-in declarations, and GHC never loads its interface on
account of a wired-in thing (GHC.Builtin.Modules.isWiredInOnlyModule);
see Note [Loading instances for wired-in things] in GHC.Iface.Load.
The individual boxing data constructors are deliberately left as an
internal implementation detail, and not exported. The intended API is
via the two new magic 'Id's:
box :: forall {r} (a :: TYPE r). a -> Box a
unbox :: forall {r} (a :: TYPE r). Box a -> a
exported from 'GHC.PrimOps' (in 'ghc-experimental'). The old boxing
data types (IntBox, WordBox, FloatBox, DoubleBox, DictBox) are no longer
exported from base (CLC proposal #421).
We use this new design to consistently desugar:
- parallel comprehensions (GHC.HsToCore.ListComp.{deListComp,dsMcStmt})
- then/group/using statements (GHC.HsToCore.ListComp.{dsTransStmt,dsMcStmt})
- recursive do blocks (mdo/rec) (GHC.HsToCore.Expr.dsDo)
- arrows (GHC.HsToCore.Arrows)
by consistently using 'box'/'unbox' to deal with unboxed types being put
into big tuples. We also adapt 'GHC.Tc.Gen.Match.{tcMcStmt,tcDoStmt}'
to create fresh /representation-polymorphic/ type variables for the
binders that we are going to put into a big tuple (previously, GHC only
allowed lifted types in that position).
These desugaring of box and unbox is explained in
Note [Desugaring box & unbox] in GHC.Core.Make.Box. Roughly speaking,
the desugaring looks like:
box @r @ty e ==> K e
unbox @r @ty e ==> case e of K x -> x
where 'K' is the boxing data constructor at RuntimeRep 'r'. It's
slightly more complicated than that in practice: we first need to
insert a cast (see Note [The canonical type of a RuntimeRep]) using the
new 'CanonicalProv' 'UnivCoProvenance', and unboxed tuples/sums need
recursive logic explained in Note [box/unbox for unboxed tuples and sums],
including a specific 'BoxSum' datatypes for unboxed sum (which also
needed a wired-in type-level list indexing type family (!!)).
The desugaring happens in two ways:
- Occurrences of 'box'/'unbox' emitted by the typechecker are
eliminated in the 'ds_app_var' case of GHC.HsToCore.Expr.
- Other code that needs to box/unbox emits the appropriate code inline.
This includes the big tuple machinery of GHC.Core.Make used by the
desugarer (GHC.HsToCore.{Utils,Binds,Arrows,ListComp}) as well as
the float-out pass (GHC.Core.Opt.SetLevels).
Core Lint checks that no occurrence of 'box'/'unbox' survives desugaring.
On the way, we overhaul the litany of big tuple functions by introducing
data BigTupleLayout = BoxedElements | BareElements
to distinguish the two kinds of "big tuples" that GHC routinely deals
with; for example 'mkBigCoreVarTupSolo' becomes 'mkBigCoreVarTup BareElements'.
All of this code is moved to the new module GHC.Core.Make.BigTuple.
Fixes #20864 #22336 #22473 #25065 #27331
-------------------------
Metric Decrease:
T9872a
-------------------------
- - - - -
4cf7628a by Evgeny Malyshev at 2026-09-17T02:39:56-04:00
Fix the CompactionFailed documentation link to compact
The old Haddock reference links into base instead of ghc-compact.
Use an explicit URL because ghc-compact depends on base, not vice versa.
Fixes #27558
Assisted-By: OpenAI Codex
- - - - -
098bba70 by Facundo Domínguez at 2026-09-17T14:57:41-04:00
Remove the call to hoistFlag from processCmdLineP
This call was undesirable because it was causing a reconstruction
of the list of flag processors.
Even relying on list fusion would not be sufficient because we want
to replace the list with a data structure with faster lookups to
address #25763.
The removal is done in two moves:
* We move CmdLineP to CmdLine.hs
* Then we move the effect of hoisting to processArgs via a new function
hoistEwM
- - - - -
e01799c7 by Facundo Domínguez at 2026-09-17T14:57:42-04:00
Do not create duplicate flag processors for the -W flag
This makes simpler implementing the command line parser with a trie map
holding flag processors. If we were to allow duplicate flag processors
for any flag, the trie map would need to be a multimap.
- - - - -
3875b257 by Facundo Domínguez at 2026-09-17T14:57:42-04:00
Replace the list of flag processors with a trie map in `processArgs`
Previously `GHC.Driver.CmdLine.findArg` was called for each
command-line argument, doing a linear search on the list of flag
processors each time. This was somewhat costly as the list of flag
processor has near 2000 elements.
A lookup with a trie map is faster in general, but the speed up is
only noticeable when calling `GHC.Driver.CmdLine.processArgs` sufficient
times, so the amount of lookups piles up. This could happen in large
projects with many units each having many dependencies. If only a
module needs to be recompiled, the user still needs to wait for all of
the flag parsing to complete.
The benchmark at testsuite/tests/perf/compiler/cmdline-parser shows a
10x speed up when using the trie.
The trie map is implemented in `GHC.Data.StringTrie`.
The design is explained in Note [Processing command line argument fast]
in GHC.Driver.Session.
The commit also:
* adds two property-based tests for trie map operations,
* adds a benchmark of the command line parser, and
* renames the predicate `arg_ok` to `valid_flag_suffix` to decide what
flag processor should be used when there are multiple matching
prefixes on a flag.
Fixes #25763.
- - - - -
5236634a by Andreas Klebinger at 2026-09-17T14:58:24-04:00
Compile Word64{Map,Set} with -O2 always.
This is the hottest code and even if we build GHC with -O0 otherwise -O2
pays off for these modules.
Fixes #27814.
- - - - -
545fd4fb by ARATA Mizuki at 2026-09-22T15:03:24-04:00
Change the C types of hs_{bitrev,bswap}{16,32} to match the Haskell types
bitReverse{16,32}# and byteSwap{16,32}# have the type
Word# -> Word#, but their C correspondents took and
returned StgWord{16,32}.
The mismatch on bitReverse16# led to the problem reported
in #27299. Although no similar issue is reported for
bitReverse32# and byteSwap{16,32}#, it seemed wise to
change them proactively.
This commit fixes the mismatch by changing the C type.
Fixes #27299
- - - - -
bf17f289 by fendor at 2026-09-22T15:04:05-04:00
Don't lose instances from shadowed imported modules with the same name
When we look for instances below the current module, we need to check
the unit id as well when we check for whether the module is the current
module, otherwise we ignore modules we import that have the same name as
the import module.
Adds regression test.
- - - - -
53eead15 by Wolfgang Jeltsch at 2026-09-24T20:12:03-04:00
Correct the documentation of `explicitUnits`
Resolves #27787.
- - - - -
35bf6f4b by Simon Jakobi at 2026-09-24T20:12:49-04:00
Remove stale specHeader bullet from Note [Don't make fillers for constraint types]
The Note said that Specialise.specHeader also calls mkAbsentFiller.
abfc224a27c removed that call: the specialiser no longer drops dead
arguments at all, see Note [Do not drop dead args from specialisations]
in GHC.Core.Opt.Specialise.
Assisted-by: Claude Fable 5.1
- - - - -
1abef1ef by Wolfgang Jeltsch at 2026-09-25T17:02:07-04:00
Improve the `mhu-closure` makefile
- - - - -
a79a68ea by Wolfgang Jeltsch at 2026-09-25T17:02:07-04:00
Make `ghci-multi` hide all unneeded packages
- - - - -
d6e72450 by Wolfgang Jeltsch at 2026-09-25T17:02:07-04:00
Improve the definition of the home unit closure property
- - - - -
c9a2766d by Wolfgang Jeltsch at 2026-09-25T17:02:07-04:00
Re-implement the home unit closure check
Compared to the previous implementation, the new one has the following
advantages:
* It is correct.
- It distinguishes between units that have the same unit ID but
different ABI hashes.
- When `-hide-all-packages` is not used, it considers as home unit
dependencies also units that are made implicitly available
because they are in the package database.
* It seems to be faster in usual settings.
- In particular, it does not have a preparation phase in which it
merges the dependency information from all home units, so that
its running time does not grow linearly with the size of the
package database in normal Cabal scenarios.
* It is (hopefully) clearer.
* It is better documented.
- - - - -
fa96acf8 by Wolfgang Jeltsch at 2026-09-25T17:02:07-04:00
Remove erroneous GHC flag in `hadrian-multi`
The flag was `-Werror=-Wno-error=incomplete-record-selectors`. Its
purpose was to permit incomplete record selectors, but because of the
illegal combination of `-Werror=` and `-Wno-error` it was ignored,
without any negative consequences.
- - - - -
9f48a5b9 by Alan Zimmerman at 2026-09-25T17:02:50-04:00
EPA: Add specific layout field to AnnList
Up to now AnnList has effectively served to represent lists of things
having layout, regardless of whether they do or not.
In Haskell, layout is optional in many places, as there is also an
alternative syntax using braces and semi-colons, which is free-form.
This commit introduces AnnListLayout, a data structure capturing this
distinction.
It is deliberately set up similarly to EpLayout, so that these two can
be merged in time.
The transition is done mechanically, where AnnListBraces is not used
yet, the original Nothing case maps to AnnListNoLayout, and the Just
case to AnnListLayout.
Later commits will fine tune these against the actual parser layout.
- - - - -
234bab08 by Vladislav Zavialov at 2026-09-29T17:22:54-04:00
Add regression test for #7803
Commit 2effe18ab5, first shipped with GHC 8.2.1, fixed #7803 "Superclass
methods are left unspecialized".
This change turns the example from the ticket description into a regression
test, checking that foo1 is fully specialised at Double, with no calls to the
overloaded exp5Tail.
Closes #7803
Assisted-by: Claude Opus 5
- - - - -
c406135c by Andreas Klebinger at 2026-10-01T06:57:28-04:00
RTS: Update flag parsing/handling:
Using 0 as argument to any of these flags now resets the flags setting to default:
- ``-n0`` disables nursery chunking.
- ``-K0`` (or a bare ``-K``) removes the stack size limit.
- ``-M0`` removes the heap size limit.
- ``-H0`` resets the suggested heap size, including the nursery scaling set by ``-H``.
- ``-AL0`` makes the large object allocation limit follow ``-A`` again.
GC Generations are now limited to 64.
-n larger than -A now emits a warning and disables chunking.
Fixes #27830 #27829
- - - - -
984ee82b by Andreas Klebinger at 2026-10-01T06:58:10-04:00
Fix MultiLayerModules timeout multiplier.
We accidentally used the compile multiplier for ghci commands which
use the run timeout setting to set the timeout.
Fixes #26263 and #27796.
- - - - -
50a9cf26 by Andreas Klebinger at 2026-10-01T06:58:10-04:00
testsuite: Include runtime in JUnit report.
- - - - -
e358619f by Alan Zimmerman at 2026-10-01T06:59:01-04:00
EPA: Use EpaLocation in EpVirtualBraces
Haddock processing uses EpLayout.EpVirtualBraces to record the current
layout column, for allocating haddock comments correctly.
For exact printing, we need the line as well as the col, so we know
how many lines to skip when the indented code block starts.
This commit updates EpLayout.EpVirtualBraces so that it carries an
EpaLocation instead of just the Int column, to allow it to be used for
both purposes.
It is a simple mechanical change, with no other impact, but it allows
us to use EpLayout instead of AnnListLayout in AnnList, in the next
commit in this series.
- - - - -
1d2a26ee by Andrew Lelechenko at 2026-10-01T20:22:04-04:00
Remove bitSize from MINIMAL pragma of class Bits
Cf. https://github.com/haskell/core-libraries-committee/issues/441
The function is deprecated for 12 years and has a default implementation,
yet it was never removed from the MINIMAL pragma, putting library authors
in a very awkward position. Let's finally remove bitSize from MINIMAL.
- - - - -
3cc21e4c by Hannes Siebenhandl at 2026-10-01T20:22:59-04:00
Add regression test for #27641
- - - - -
c35096f5 by Hannes Siebenhandl at 2026-10-01T20:23:00-04:00
Don't `:add` modules the loader will reject
Only home modules can be actually added to the loader context, thus we
only accept the module if it belongs to a home unit.
- - - - -
a563cb27 by Simon Jakobi at 2026-10-02T17:37:36-04:00
ci: accept modified changelog.d entries in lint-changelog
The changelog guide says to extend an existing entry rather than add a
new one when the feature is already documented. lint_changelog only
counted added files, so such MRs failed before the validator ran.
Fixes #27779.
Assisted-by: Claude Fable 5.1
- - - - -
03082cd4 by Simon Jakobi at 2026-10-02T17:38:17-04:00
changelog.d: Fix warning flag name in the semaphore-v2 entry
The entry refers to -Wsemaphore-version-mismatch, which does not exist.
The warning GHC emits when it cannot use a -jsem semaphore, including
on a protocol version mismatch, is -Wsemaphore-open-failure.
Context: !15729, #25087
Assisted-by: Claude Fable 5.1
- - - - -
a93705ee by Simon Jakobi at 2026-10-02T17:38:17-04:00
changelog.d: Fix the CLC proposal link in the T27455 entry
The entry used the Sphinx :ref: role with a URL as its target. :ref:
resolves only internal labels, so the generated release notes would
show the proposal name without a link. Use the plain hyperlink form
like the other entries.
Context: !16274, #27455
Assisted-by: Claude Fable 5.1
- - - - -
54381079 by Hannes Siebenhandl at 2026-10-02T17:39:01-04:00
Extend the `TrustOverlay` for wired-in units
The TrustOverlay only contained the `UnitId` of all on-disk units.
However, wired-in units are referred to by their wired-in unit id, which
is not the same as the on-disk unit id.
Thus, trust checks for wired-in units failed because the lookup was
using the wired-in unit, which wasn't present in the `TrustOverlay`.
We fix #27834, by copying the trust info for wired-in unit ids.
- - - - -
d24d7c81 by Sven Tennie at 2026-10-04T15:01:56+00:00
hadrian: Add Stage3 cross-compiled target bindist (#26924)
Add a `binary-dist-stage3` Hadrian target that packages target
executables (produced by the stage2 compiler) into a separate
'_build/bindist-stage3/' folder, distinct from the stage2 regular or
cross-compiler bindist in '_build/bindist/'.
This allows a single CI pipeline job to produce both a cross-compiler
bindist (e.g. x86_64 -> RISC-V) and a target-architecture bindist (e.g.
RISC-V -> RISC-V) that can be installed and run natively on the target.
To avoid issues with stale files or race-conditions on them, generate
the `configure` script per stage in `_build/<stage>/distrib`
directories.
- - - - -
ba255eea by Sven Tennie at 2026-10-04T15:02:06+00:00
ci: Build Stage3 and Stage2 bindists for cross targets in one job (#26924)
Building the stage3 target bindist already produces most of the stage2
cross-compiler bindist as a byproduct, so building them in separate jobs
duplicates the build efforts for no benefit. Instead of a separate
CROSS_STAGE=3 job, the stage3 job now also builds and publishes the
stage2 bindist.
The stage3 tarball is named and versioned as if it were built natively
on the target (target triple prefix, non-cross opsys), so its artifact
name stays what downstream consumers already expect and no changes are
needed on their side.
For now, this is only enabled for the RISC-V job. Others can easily
follow.
- - - - -
4bb2ac26 by Sven Tennie at 2026-10-10T13:28:17+02:00
ci: model cross targets as structured TargetPlatform triples
Storing the cross target as a raw triple forced ad-hoc parsing at every
use, and broke the single responsibility rule. Modelling it as a
structured `TargetPlatform`` instead, avoids parsing and provides a
clear separation of concerns.
- - - - -
9f5e3efe by Sven Tennie at 2026-10-10T13:30:50+02:00
ci: use a scalar cross-stage switch, FINAL_CROSS_STAGE=2|3
For cross-compilers, Stage2 bindists are (almost) a by-product of Stage3
bindists. Thus, we either build Stage2 or Stage2 + Stage3 bindists. The
commit at hand reflects this fact in types.
- - - - -
9948de93 by Sven Tennie at 2026-10-10T13:35:37+02:00
ci: extract the cross smoke tests into a separate smoke_test command
This reduces if-nesting and complexity of the main `test_hadrian`
command. The decision how to test is now made by the caller. This is a
fair choice, because most test cases can run under emulation - they are
just very slow then.
- - - - -
8467205a by Sven Tennie at 2026-10-10T13:35:37+02:00
ci: inline the FINAL_CROSS_STAGE renderer
`finalCrossStageEnvVal` was small and only used in one place.
- - - - -
2f1ced90 by Sven Tennie at 2026-10-10T13:35:38+02:00
hadrian: clarify cross-stage settings and project.mk comments
Reword the settings-rule comment to name the two stage roles
(compilerStage vs libraryStage) and explain what 'the final
architecture' in terms of project.mk generation means.
- - - - -
8f796271 by Sven Tennie at 2026-10-10T13:35:38+02:00
Fix typo
- - - - -
a8bf178c by Sven Tennie at 2026-10-10T13:36:49+02:00
Improve ci.sh comment
- - - - -
09ac91f8 by Sven Tennie at 2026-10-10T13:36:49+02:00
Make function private
- - - - -
c8648b01 by Sven Tennie at 2026-10-10T13:36:49+02:00
Improve gen_ci.hs comments
- - - - -
7a28a28b by Sven Tennie at 2026-10-10T13:36:49+02:00
gen_ci.hs: Remove superfluous binDistNameWith
- - - - -
9fed899e by Sven Tennie at 2026-10-10T13:36:49+02:00
gen_ci.hs: Trailing whitespace
- - - - -
6e74427d by Sven Tennie at 2026-10-10T13:36:49+02:00
Simplify comment
- - - - -
265b4733 by Sven Tennie at 2026-10-10T13:36:49+02:00
Improve comment in ci.sh
- - - - -
1385 changed files:
- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- + changelog.d/25763-cmdline-opt
- + changelog.d/26610
- + changelog.d/27556
- + changelog.d/27626
- + changelog.d/27627
- + changelog.d/27641
- + changelog.d/27703
- + changelog.d/27704
- + changelog.d/27717
- + changelog.d/27732
- + changelog.d/T20363
- changelog.d/T27202
- changelog.d/T27455
- + changelog.d/T27586
- + changelog.d/T27629
- + changelog.d/T27657
- + changelog.d/T27705
- + changelog.d/T27722-cbe-entry-block.md
- + changelog.d/T27744
- + changelog.d/T27749
- + changelog.d/T27764
- + changelog.d/T27788-js-selector
- + changelog.d/T27830-rts-flag-bounds
- + changelog.d/allow-gadt-prefix-con-parens
- + changelog.d/arm_ncg_fixes_T27430
- + changelog.d/boxing-family
- + changelog.d/clc-421
- + changelog.d/downsweep-refactor
- + changelog.d/fix-compacting-gc-constr-27649
- + changelog.d/fix-control0-mask-trampoline
- changelog.d/fix-heap-census-large-arrays-19048
- + changelog.d/fix-parallel-gc-selector-race-27477
- + changelog.d/fix-threadlabel-segfault-27618
- + changelog.d/implicit-field-strictness-warning
- changelog.d/lazy-field-annotations
- + changelog.d/link-deterministic-order
- + changelog.d/llvm-23
- + changelog.d/ncg-x86-bit-test-instructions
- + changelog.d/refactor-known-names
- + changelog.d/rethrow-stm
- + changelog.d/select-io-manager
- changelog.d/semaphore-v2
- + changelog.d/show-byte-code
- + changelog.d/stage3-cross-bindists
- changelog.d/unit-index
- compiler/GHC.hs
- + compiler/GHC/Builtin.hs
- + compiler/GHC/Builtin/KnownKeys.hs
- + compiler/GHC/Builtin/KnownOccs.hs
- + compiler/GHC/Builtin/Modules.hs
- − compiler/GHC/Builtin/Names.hs
- − compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/PrimOps/Casts.hs
- compiler/GHC/Builtin/PrimOps/Ids.hs
- + compiler/GHC/Builtin/TH.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/Uniques.hs-boot
- − compiler/GHC/Builtin/Utils.hs
- + compiler/GHC/Builtin/WiredIn/Ids.hs
- compiler/GHC/Builtin/Types/Prim.hs → compiler/GHC/Builtin/WiredIn/Prim.hs
- compiler/GHC/Builtin/Types/Literals.hs → compiler/GHC/Builtin/WiredIn/TypeLits.hs
- compiler/GHC/Builtin/Types.hs → compiler/GHC/Builtin/WiredIn/Types.hs
- compiler/GHC/Builtin/Types.hs-boot → compiler/GHC/Builtin/WiredIn/Types.hs-boot
- + compiler/GHC/Builtin/WiredIn/Types/Box.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Serialize.hs
- + compiler/GHC/ByteCode/Show.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/Format.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Class.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion/Axiom.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/FamInstEnv.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- + compiler/GHC/Core/Make/BigTuple.hs
- + compiler/GHC/Core/Make/Box.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/LiberateCase.hs
- compiler/GHC/Core/Opt/OccurAnal.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/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/AddImplicitBinds.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/BooleanFormula.hs
- compiler/GHC/Data/FastString.hs
- + compiler/GHC/Data/StringTrie.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/Internal.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/CmdLine.hs
- compiler/GHC/Driver/Config/Tidy.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/KnotVars.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/GenerateCgIPEStub.hs
- compiler/GHC/Driver/Main/Compile.hs
- compiler/GHC/Driver/Main/Hsc.hs
- compiler/GHC/Driver/Main/Passes.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Driver/Session/Units.hs
- compiler/GHC/Hs.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Doc.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Extension/Pass.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/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/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/Call.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Utils.hs
- compiler/GHC/HsToCore/Foreign/Wasm.hs
- compiler/GHC/HsToCore/ListComp.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match.hs-boot
- compiler/GHC/HsToCore/Match/Constructor.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc/Check.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Ppr.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/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/Env.hs-boot
- compiler/GHC/Iface/Errors/Ppr.hs
- compiler/GHC/Iface/Errors/Types.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Tidy/StaticPtrTable.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- compiler/GHC/Plugins.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Lit.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Context.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Stg/BcPrep.hs
- compiler/GHC/Stg/Debug.hs
- compiler/GHC/Stg/Lint.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/DataCon.hs
- compiler/GHC/StgToCmm/Env.hs
- compiler/GHC/StgToCmm/Foreign.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Ticky.hs
- compiler/GHC/StgToJS/Apply.hs
- compiler/GHC/StgToJS/Arg.hs
- compiler/GHC/StgToJS/CodeGen.hs
- compiler/GHC/StgToJS/Expr.hs
- compiler/GHC/StgToJS/FFI.hs
- compiler/GHC/StgToJS/Linker/Utils.hs
- compiler/GHC/StgToJS/Symbols.hs
- compiler/GHC/StgToJS/Utils.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/Deriv/Utils.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Instance/FunDeps.hs
- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/FunDeps.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Rewrite.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/Constraint.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/LclEnv.hs
- compiler/GHC/Tc/Types/Origin.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/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/CompleteMatch.hs
- compiler/GHC/Types/DefaultEnv.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Id.hs
- compiler/GHC/Types/Id/Info.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Literal.hs
- compiler/GHC/Types/Name.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Name/Ppr.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/RepType.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/FM.hs
- + compiler/GHC/Types/UnresolvedImport.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Unit.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/External.hs
- compiler/GHC/Unit/External/Index.hs
- compiler/GHC/Unit/External/ModuleOrigin.hs
- compiler/GHC/Unit/External/Providers.hs
- compiler/GHC/Unit/External/Wired.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Finder/Types.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Unit/Types.hs
- compiler/GHC/Utils/Binary.hs
- − compiler/GHC/Utils/Binary/Typeable.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/Type.hs
- compiler/ghc.cabal.in
- configure.ac
- distrib/configure.ac.in
- docs/index.html.in
- docs/users_guide/exts/gadt_syntax.rst
- docs/users_guide/exts/qualified_strings.rst
- docs/users_guide/exts/strict.rst
- docs/users_guide/exts/type_data.rst
- docs/users_guide/ghc_config.py.in
- docs/users_guide/runtime_control.rst
- docs/users_guide/separate_compilation.rst
- docs/users_guide/using-warnings.rst
- docs/users_guide/using.rst
- ghc/GHC/Driver/Session/Mode.hs
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Monad.hs
- ghc/Main.hs
- hadrian/README.md
- hadrian/doc/cross-compile.md
- hadrian/doc/flavours.md
- hadrian/doc/make.md
- hadrian/doc/windows.md
- hadrian/ghci-multi-cabal.in
- hadrian/hadrian.cabal
- − hadrian/hie-bios
- hadrian/hie-bios.bat
- hadrian/src/Base.hs
- hadrian/src/BindistConfig.hs
- hadrian/src/Builder.hs
- hadrian/src/CommandLine.hs
- hadrian/src/Flavour.hs
- hadrian/src/Hadrian/Builder.hs
- hadrian/src/Hadrian/Builder/Ar.hs
- hadrian/src/Hadrian/Oracles/Path.hs
- hadrian/src/Hadrian/Utilities.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Changelog.hs
- hadrian/src/Rules/Codes.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Lint.hs
- hadrian/src/Rules/Nofib.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings.hs
- − hadrian/src/Settings/Flavours/Quickest.hs
- hie.yaml
- libraries/base/base.cabal.in
- libraries/base/changelog.md
- libraries/base/src/Control/Applicative.hs
- libraries/base/src/Control/Concurrent.hs
- libraries/base/src/Control/Concurrent/Chan.hs
- libraries/base/src/Control/Concurrent/QSem.hs
- libraries/base/src/Control/Concurrent/QSemN.hs
- libraries/base/src/Data/Array/Byte.hs
- libraries/base/src/Data/Bifoldable.hs
- libraries/base/src/Data/Bifoldable1.hs
- libraries/base/src/Data/Bifunctor.hs
- libraries/base/src/Data/Bitraversable.hs
- libraries/base/src/Data/Bool.hs
- libraries/base/src/Data/Complex.hs
- libraries/base/src/Data/Data.hs
- libraries/base/src/Data/Enum.hs
- libraries/base/src/Data/Fixed.hs
- libraries/base/src/Data/Foldable1.hs
- libraries/base/src/Data/Functor/Classes.hs
- libraries/base/src/Data/Functor/Compose.hs
- libraries/base/src/Data/Functor/Contravariant.hs
- libraries/base/src/Data/Functor/Product.hs
- libraries/base/src/Data/Functor/Sum.hs
- libraries/base/src/Data/List.hs
- libraries/base/src/Data/List/NonEmpty.hs
- libraries/base/src/Data/List/NubOrdSet.hs
- + libraries/base/src/Data/RealFloat.hs
- libraries/base/src/Data/Semigroup.hs
- libraries/base/src/Data/Version.hs
- libraries/base/src/GHC/Base.hs
- libraries/base/src/GHC/ByteOrder.hs
- libraries/base/src/GHC/Conc.hs
- + libraries/base/src/GHC/Essentials.hs
- libraries/base/src/GHC/Exts.hs
- libraries/base/src/GHC/Fingerprint.hs
- libraries/base/src/GHC/RTS/Flags.hs
- libraries/base/src/GHC/ResponseFile.hs
- libraries/base/src/GHC/Stats.hs
- libraries/base/src/GHC/Weak/Finalize.hs
- libraries/base/src/Numeric.hs
- libraries/base/src/Prelude.hs
- libraries/base/src/System/CPUTime/Posix/ClockGetTime.hsc
- libraries/base/src/System/CPUTime/Posix/RUsage.hsc
- libraries/base/src/System/CPUTime/Posix/Times.hsc
- libraries/base/src/System/CPUTime/Unsupported.hs
- libraries/base/src/System/Console/GetOpt.hs
- libraries/base/src/System/Exit.hs
- libraries/base/src/System/IO.hs
- libraries/base/src/System/IO/OS.hs
- libraries/base/src/System/IO/Unsafe.hs
- libraries/base/src/System/Info.hs
- libraries/base/src/System/Timeout.hs
- libraries/base/src/Text/Printf.hs
- libraries/base/src/Text/Read.hs
- libraries/base/src/Text/Show/Functions.hs
- libraries/base/tests/all.T
- libraries/base/tests/listThreads1.hs
- libraries/base/tests/listThreads1.stdout
- libraries/binary
- libraries/ghc-experimental/src/Data/Sum/Experimental.hs
- libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
- libraries/ghc-experimental/src/GHC/Profiling/Eras.hs
- libraries/ghc-experimental/src/Prelude/Experimental.hs
- libraries/ghc-internal/codepages/MakeTable.hs
- libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-internal/include/RtsIfaceSymbols.h
- libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs
- libraries/ghc-internal/src/GHC/Internal/Arr.hs
- libraries/ghc-internal/src/GHC/Internal/ArrayArray.hs
- libraries/ghc-internal/src/GHC/Internal/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Backend.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/GMP.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Native.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/BigNat.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/BigNat.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Bignum/Primitives.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/WordArray.hs
- libraries/ghc-internal/src/GHC/Internal/Bits.hs
- + libraries/ghc-internal/src/GHC/Internal/Box.hs
- libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs
- libraries/ghc-internal/src/GHC/Internal/CString.hs
- libraries/ghc-internal/src/GHC/Internal/Char.hs
- libraries/ghc-internal/src/GHC/Internal/Classes.hs
- libraries/ghc-internal/src/GHC/Internal/Classes/IP.hs
- libraries/ghc-internal/src/GHC/Internal/Clock.hsc
- libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/POSIX/Const.hsc
- libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs
- libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc
- libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Category.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy.hs
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- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Zip.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Coerce.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Data.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Either.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Function.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Utils.hs
- libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs
- libraries/ghc-internal/src/GHC/Internal/Data/List.hs
- libraries/ghc-internal/src/GHC/Internal/Data/List/NonEmpty.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs
- libraries/ghc-internal/src/GHC/Internal/Data/NonEmpty.hs
- libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Ord.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Proxy.hs
- libraries/ghc-internal/src/GHC/Internal/Data/STRef.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Data/String.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Tuple.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Coercion.hs
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- testsuite/tests/typecheck/should_fail/T5095.stderr
- testsuite/tests/typecheck/should_fail/T7279.stderr
- testsuite/tests/typecheck/should_fail/TcStaticPointersFail02.stderr
- testsuite/tests/typecheck/should_fail/TyAppPat_PatternBindingExistential.stderr
- testsuite/tests/typecheck/should_fail/tcfail072.stderr
- testsuite/tests/typecheck/should_fail/tcfail097.stderr
- testsuite/tests/typecheck/should_fail/tcfail133.stderr
- testsuite/tests/typecheck/should_run/T22510.stdout
- testsuite/tests/unboxedsums/UbxSumLevPoly.hs
- testsuite/tests/unboxedsums/unboxedsums_unit_tests.hs
- + testsuite/tests/vdq-rta/should_fail/T27586a.hs
- + testsuite/tests/vdq-rta/should_fail/T27586a.stderr
- + testsuite/tests/vdq-rta/should_fail/T27586b.hs
- + testsuite/tests/vdq-rta/should_fail/T27586b.stderr
- + testsuite/tests/vdq-rta/should_fail/T27586c.hs
- + testsuite/tests/vdq-rta/should_fail/T27586c.stderr
- testsuite/tests/vdq-rta/should_fail/all.T
- testsuite/tests/warnings/should_compile/DerivingTypeable.stderr
- + testsuite/tests/warnings/should_compile/T16836a.hs
- + testsuite/tests/warnings/should_compile/T16836a.stderr
- + testsuite/tests/warnings/should_compile/T16836b.hs
- + testsuite/tests/warnings/should_compile/T16836c.hs
- + testsuite/tests/warnings/should_compile/T16836c.stderr
- + testsuite/tests/warnings/should_compile/T16836d.hs
- + testsuite/tests/warnings/should_compile/T16836d.stderr
- testsuite/tests/warnings/should_compile/all.T
- + testsuite/tests/warnings/should_fail/WExpectedNoArgError.stderr
- testsuite/tests/warnings/should_fail/all.T
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Parsers.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Utils.hs
- utils/check-ppr/Main.hs
- utils/deriveConstants/Main.hs
- utils/genprimopcode/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Program.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Target.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hoogle.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.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/Rename.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs
- utils/hsc2hs
- utils/jsffi/dyld.mjs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/5a88c2c1ef14f89f5615e06d3e8231…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/5a88c2c1ef14f89f5615e06d3e8231…
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