[Git][ghc/ghc][master] task: Substitute some datatypes for newtypes
by Marge Bot (＠marge-bot) 04 Dec '25
by Marge Bot (＠marge-bot) 04 Dec '25
04 Dec '25
Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC
Commits:
beae879b by Rodrigo Mesquita at 2025-12-03T15:42:37+01:00
task: Substitute some datatypes for newtypes
* Substitutes some data type declarations for newtype declarations
* Adds comment to `LlvmConfigCache`, which must decidedly not be a
newtype.
Fixes #23555
- - - - -
5 changed files:
- compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
- compiler/GHC/CmmToAsm/PPC/RegInfo.hs
- compiler/GHC/Core/Map/Type.hs
- compiler/GHC/Driver/LlvmConfigCache.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
Changes:
=====================================
compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
=====================================
@@ -8,7 +8,7 @@ import GHC.Cmm
import GHC.Utils.Outputable
-data JumpDest = DestBlockId BlockId
+newtype JumpDest = DestBlockId BlockId
-- Debug Instance
instance Outputable JumpDest where
=====================================
compiler/GHC/CmmToAsm/PPC/RegInfo.hs
=====================================
@@ -27,7 +27,7 @@ import GHC.Cmm.CLabel
import GHC.Types.Unique
import GHC.Utils.Outputable (ppr, text, Outputable, (<>))
-data JumpDest = DestBlockId BlockId
+newtype JumpDest = DestBlockId BlockId
-- Debug Instance
instance Outputable JumpDest where
=====================================
compiler/GHC/Core/Map/Type.hs
=====================================
@@ -554,7 +554,7 @@ instance Eq (DeBruijn a) => Eq (DeBruijn (Maybe a)) where
-- We also need to do the same for multiplicity! Which, since multiplicities are
-- encoded simply as a 'Type', amounts to have a Trie for a pair of types. Tries
-- of pairs are composition.
-data BndrMap a = BndrMap (TypeMapG (MaybeMap TypeMapG a))
+newtype BndrMap a = BndrMap (TypeMapG (MaybeMap TypeMapG a))
-- TODO(22292): derive
instance Functor BndrMap where
=====================================
compiler/GHC/Driver/LlvmConfigCache.hs
=====================================
@@ -18,6 +18,8 @@ import System.IO.Unsafe
-- Currently implemented with unsafe lazy IO. But it could be implemented with
-- an IORef as the exposed interface is in IO.
data LlvmConfigCache = LlvmConfigCache LlvmConfig
+-- NB: It is crucial for this to be a datatype, not a newtype.
+-- Allocations can increase across the board over 20% otherwise (see the discussion on !10708 and non-final pipelines)
initLlvmConfigCache :: FilePath -> IO LlvmConfigCache
initLlvmConfigCache top_dir = pure $ LlvmConfigCache (unsafePerformIO $ initLlvmConfig top_dir)
=====================================
compiler/GHC/Driver/Pipeline/Phases.hs
=====================================
@@ -52,4 +52,4 @@ data TPhase res where
T_MergeForeign :: PipeEnv -> HscEnv -> FilePath -> [FilePath] -> TPhase FilePath
-- | A wrapper around the interpretation function for phases.
-data PhaseHook = PhaseHook (forall a . TPhase a -> IO a)
+newtype PhaseHook = PhaseHook (forall a . TPhase a -> IO a)
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/beae879bf676a4892aa5fbff0a79b07…
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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/beae879bf676a4892aa5fbff0a79b07…
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[Git][ghc/ghc][wip/bytecode-library-combined] 21 commits: Add a fast-path for args=[] to occAnalApp
by Cheng Shao (＠TerrorJack) 04 Dec '25
by Cheng Shao (＠TerrorJack) 04 Dec '25
04 Dec '25
Cheng Shao pushed to branch wip/bytecode-library-combined at Glasgow Haskell Compiler / GHC
Commits:
48a3ed57 by Simon Peyton Jones at 2025-11-25T15:33:54+00:00
Add a fast-path for args=[] to occAnalApp
In the common case of having not arguments, occAnalApp
was doing redundant work.
- - - - -
951e5ed9 by Simon Peyton Jones at 2025-11-25T15:33:54+00:00
Fix a performance hole in the occurrence analyser
As #26425 showed, the clever stuff in
Note [Occurrence analysis for join points]
does a lot of duplication of usage details. This patch
improved matters with a little fancy footwork. It is
described in the new (W4) of the same Note.
Compile-time allocations go down slightly. Here are the changes
of +/- 0.5% or more:
T13253(normal) 329,369,244 326,395,544 -0.9%
T13253-spj(normal) 66,410,496 66,095,864 -0.5%
T15630(normal) 129,797,200 128,663,136 -0.9%
T15630a(normal) 129,212,408 128,027,560 -0.9%
T16577(normal) 6,756,706,896 6,723,028,512 -0.5%
T18282(normal) 128,462,070 125,808,584 -2.1% GOOD
T18698a(normal) 208,418,305 202,037,336 -3.1% GOOD
T18730(optasm) 136,981,756 136,208,136 -0.6%
T18923(normal) 58,103,088 57,745,840 -0.6%
T19695(normal) 1,386,306,272 1,365,609,416 -1.5%
T26425(normal) 3,344,402,957 2,457,811,664 -26.5% GOOD
T6048(optasm) 79,763,816 79,212,760 -0.7%
T9020(optasm) 225,278,408 223,682,440 -0.7%
T9961(normal) 303,810,717 300,729,168 -1.0% GOOD
geo. mean -0.5%
minimum -26.5%
maximum +0.4%
Metric Decrease:
T18282
T18698a
T26425
T9961
- - - - -
f1959dfc by Simon Peyton Jones at 2025-11-26T11:58:07+00:00
Remove a quadratic-cost assertion check in mkCoreApp
See the new Note [Assertion checking in mkCoreApp]
- - - - -
98fa0d36 by Simon Hengel at 2025-11-27T17:54:57-05:00
Fix typo in docs/users_guide/exts/type_families.rst
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5b97e5ce by Simon Hengel at 2025-11-27T17:55:37-05:00
Fix broken RankNTypes example in user's guide
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fa2aaa00 by Simon Peyton Jones at 2025-11-27T17:56:18-05:00
Switch off specialisation in ExactPrint
In !15057 (where we re-introduced -fpolymoprhic-specialisation) we found
that ExactPrint's compile time blew up by a factor of 5. It turned out
to be caused by bazillions of specialisations of `markAnnotated`.
Since ExactPrint isn't perf-critical, it does not seem worth taking
the performance hit, so this patch switches off specialisation in
this one module.
- - - - -
1fd25987 by Simon Peyton Jones at 2025-11-27T17:56:18-05:00
Switch -fpolymorphic-specialisation on by default
This patch addresses #23559.
Now that !10479 has landed and #26329 is fixed, we can switch on
polymorphic specialisation by default, addressing a bunch of other
tickets listed in #23559.
Metric changes:
* CoOpt_Singleton: +4% compiler allocations: we just get more
specialisations
* info_table_map_perf: -20% decrease in compiler allocations.
This is caused by using -fno-specialise in ExactPrint.hs
Without that change we get a 4x blow-up in compile time;
see !15058 for details
Metric Decrease:
info_table_map_perf
Metric Increase:
CoOpt_Singletons
- - - - -
b7fe7445 by Matthew Pickering at 2025-11-27T17:56:59-05:00
rts: Fix a deadlock with eventlog flush interval and RTS shutdown
The ghc_ticker thread attempts to flush at the eventlog tick interval, this requires
waiting to take all capabilities.
At the same time, the main thread is shutting down, the schedule is
stopped and then we wait for the ticker thread to finish.
Therefore we are deadlocked.
The solution is to use `newBoundTask/exitMyTask`, so that flushing can
cooperate with the scheduler shutdown.
Fixes #26573
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1d4a1229 by sheaf at 2025-11-27T17:58:02-05:00
SimpleOpt: don't subst in pushCoercionIntoLambda
It was noticed in #26589 that the change in 15b311be was incorrect:
the simple optimiser carries two different substitution-like pieces of
information: 'soe_subst' (from InVar to OutExpr) and 'soe_inl'
(from InId to InExpr). It is thus incorrect to have 'pushCoercionIntoLambda'
apply the substitution from 'soe_subst' while discarding 'soe_inl'
entirely, which is what was done in 15b311be.
Instead, we change back pushCoercionIntoLambda to take an InScopeSet,
and optimise the lambda before calling 'pushCoercionIntoLambda' to avoid
mixing InExpr with OutExpr, or mixing two InExpr with different
environments. We can then call 'soeZapSubst' without problems.
Fixes #26588 #26589
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84a087d5 by Sylvain Henry at 2025-11-28T17:35:28-05:00
Fix PIC jump tables on Windows (#24016)
Avoid overflows in jump tables by using a base label closer to the jump
targets. See added Note [Jump tables]
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82db7042 by Zubin Duggal at 2025-11-28T17:36:10-05:00
rts/linker/PEi386: Copy strings before they are inserted into LoadedDllCache. The original strings are temporary and might be freed at an arbitrary point.
Fixes #26613
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ff3f0d09 by Ben Gamari at 2025-11-29T18:34:28-05:00
gitlab-ci: Run ghcup-metadata jobs on OpenCape runners
This significantly reduces our egress traffic
and makes the jobs significantly faster.
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ef0dc33b by Matthew Pickering at 2025-11-29T18:35:10-05:00
Use 'OsPath' in getModificationTimeIfExists
This part of the compiler is quite hot during recompilation checking in
particular since the filepaths will be translated to a string. It is
better to use the 'OsPath' native function, which turns out to be easy
to do.
- - - - -
fa3bd0a6 by Georgios Karachalias at 2025-11-29T18:36:05-05:00
Use OsPath in PkgDbRef and UnitDatabase, not FilePath
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0d7c05ec by Ben Gamari at 2025-12-01T03:13:46-05:00
hadrian: Place user options after package arguments
This makes it easier for the user to override the default package
arguments with `UserSettings.hs`.
Fixes #25821.
-------------------------
Metric Decrease:
T14697
-------------------------
- - - - -
3b2c4598 by Vladislav Zavialov at 2025-12-01T03:14:29-05:00
Namespace-specified wildcards in import/export lists (#25901)
This change adds support for top-level namespace-specified wildcards
`type ..` and `data ..` to import and export lists.
Examples:
import M (type ..) -- imports all type and class constructors from M
import M (data ..) -- imports all data constructors and terms from M
module M (type .., f) where
-- exports all type and class constructors defined in M,
-- plus the function 'f'
The primary intended usage of this feature is in combination with module
aliases, allowing namespace disambiguation:
import Data.Proxy as T (type ..) -- T.Proxy is unambiguously the type constructor
import Data.Proxy as D (data ..) -- D.Proxy is unambiguously the data constructor
The patch accounts for the interactions of wildcards with:
* Imports with `hiding` clauses
* Import warnings -Wunused-imports, -Wdodgy-imports
* Export warnings -Wduplicate-exports, -Wdodgy-exports
Summary of the changes:
1. Move the NamespaceSpecifier type from GHC.Hs.Binds to GHC.Hs.Basic,
making it possible to use it in more places in the AST.
2. Extend the AST (type: IE) with a representation of `..`, `type ..`,
and `data ..` (constructor: IEWholeNamespace). Per the proposal, the
plain `..` is always rejected with a dedicated error message.
3. Extend the grammar in Parser.y with productions for `..`, `type ..`,
and `data ..` in both import and export lists.
4. Implement wildcard imports by updating the `filterImports` function
in GHC.Rename.Names; the logic for IEWholeNamespace is roughly
modeled after the Nothing (no explicit import list) case.
5. Implement wildcard exports by updating the `exports_from_avail`
function in GHC.Tc.Gen.Export; the logic for IEWholeNamespace is
closely modeled after the IEModuleContents case.
6. Refactor and extend diagnostics to report the new warnings and
errors. See PsErrPlainWildcardImport, DodgyImportsWildcard,
PsErrPlainWildcardExport, DodgyExportsWildcard,
TcRnDupeWildcardExport.
Note that this patch is specifically about top-level import/export
items. Subordinate import/export items are left unchanged.
- - - - -
c71faa76 by Luite Stegeman at 2025-12-01T03:16:05-05:00
rts: Handle overflow of ELF section header string table
If the section header string table is stored in a section greater
than or equal to SHN_LORESERVE (0xff00), the 16-bit field e_shstrndx
in the ELF header does not contain the section number, but rather
an overflow value SHN_XINDEX (0xffff) indicating that we need to look
elsewhere.
This fixes the linker by not using e_shstrndx directly but calling
elf_shstrndx, which correctly handles the SHN_XINDEX value.
Fixes #26603
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ab20eb54 by Mike Pilgrem at 2025-12-01T22:46:55+00:00
Re CLC issue 292 Warn GHC.Internal.List.{init,last} are partial
Also corrects the warning for `tail` to refer to `Data.List.uncons` (like the existing warning for `head`).
In module `Settings.Warnings`, applies `-Wno-x-partial` to the `filepath`, and `parsec` packages (outside GHC's repository).
Also bumps submodules.
- - - - -
fc1d7f79 by Jade Lovelace at 2025-12-02T11:04:09-05:00
docs: fix StandaloneKindSignatures in DataKinds docs
These should be `type` as otherwise GHC reports a duplicate definition
error.
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4212b461 by Matthew Pickering at 2025-12-04T05:17:04+01:00
Add support for building bytecode libraries
A bytecode library is a collection of bytecode files (.gbc) and a
library which combines together additional object files.
A bytecode library is created by invoking GHC with the `-bytecodelib`
flag.
A library can be created from in-memory `ModuleByteCode` linkables or
by passing `.gbc` files as arguments on the command line.
Fixes #26298
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1af83a9d by Matthew Pickering at 2025-12-04T05:17:08+01:00
Load bytecode libraries to satisfy package dependencies
This commit allows you to use a bytecode library to satisfy a package
dependency when using the interpreter.
If a user enables `-fprefer-byte-code`, then if a package provides a
bytecode library, that will be loaded and used to satisfy the
dependency.
The main change is to separate the relevant parts of the `LoaderState`
into external and home package byte code. Bytecode is loaded into either
the home package or external part (similar to HPT/EPS split), HPT
bytecode can be unloaded. External bytecode is never unloaded.
The unload function has also only been called with an empty list of
"stable linkables" for a long time. It has been modified to directly
implement a complete unloading of the home package bytecode linkables.
At the moment, the bytecode libraries are found in the "library-dirs"
field from the package description. In the future when `Cabal`
implements support for "bytecode-library-dirs" field, we can read the
bytecode libraries from there. No changes to the Cabal submodule are
necessary at the moment.
Four new tests are added in testsuite/tests/cabal, which generate fake
package descriptions and test loading the libraries into GHCi.
Fixes #26298
- - - - -
201 changed files:
- .gitlab-ci.yml
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/Data/OsPath.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/Phases.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Driver/Session/Units.hs
- compiler/GHC/Hs/Basic.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/Iface/Ext/Ast.hs
- + compiler/GHC/Linker/ByteCode.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Unique/FM.hs
- compiler/GHC/Types/Unique/Set.hs
- compiler/GHC/Types/Var/Env.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Home/PackageTable.hs
- compiler/GHC/Unit/Info.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- compiler/ghc.cabal.in
- docs/users_guide/9.16.1-notes.rst
- docs/users_guide/exts/data_kinds.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/rank_polymorphism.rst
- docs/users_guide/exts/type_families.rst
- docs/users_guide/phases.rst
- docs/users_guide/using-optimisation.rst
- ghc/GHCi/UI.hs
- ghc/Main.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Warnings.hs
- libraries/base/changelog.md
- libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
- libraries/ghc-boot/GHC/Unit/Database.hs
- libraries/ghc-internal/src/GHC/Internal/Float.hs
- libraries/ghc-internal/src/GHC/Internal/List.hs
- libraries/ghc-internal/src/GHC/Internal/System/IO.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Syntax.hs
- libraries/template-haskell/vendored-filepath/System/FilePath/Posix.hs
- libraries/template-haskell/vendored-filepath/System/FilePath/Windows.hs
- rts/eventlog/EventLog.c
- rts/linker/Elf.c
- rts/linker/PEi386.c
- testsuite/config/ghc
- testsuite/mk/boilerplate.mk
- + testsuite/tests/cabal/Bytecode.hs
- + testsuite/tests/cabal/BytecodeForeign.c
- + testsuite/tests/cabal/BytecodeForeign.hs
- testsuite/tests/cabal/Makefile
- testsuite/tests/cabal/all.T
- + testsuite/tests/cabal/bytecode.pkg
- + testsuite/tests/cabal/bytecode.script
- + testsuite/tests/cabal/bytecode_foreign.pkg
- + testsuite/tests/cabal/bytecode_foreign.script
- testsuite/tests/cabal/ghcpkg03.stderr
- testsuite/tests/cabal/ghcpkg03.stderr-mingw32
- testsuite/tests/cabal/ghcpkg05.stderr
- testsuite/tests/cabal/ghcpkg05.stderr-mingw32
- + testsuite/tests/cabal/pkg_bytecode.stderr
- + testsuite/tests/cabal/pkg_bytecode.stdout
- + testsuite/tests/cabal/pkg_bytecode_foreign.stderr
- + testsuite/tests/cabal/pkg_bytecode_foreign.stdout
- + testsuite/tests/cabal/pkg_bytecode_with_gbc.stderr
- + testsuite/tests/cabal/pkg_bytecode_with_gbc.stdout
- + testsuite/tests/cabal/pkg_bytecode_with_o.stderr
- + testsuite/tests/cabal/pkg_bytecode_with_o.stdout
- + testsuite/tests/codeGen/should_run/T24016.hs
- + testsuite/tests/codeGen/should_run/T24016.stdout
- testsuite/tests/codeGen/should_run/all.T
- testsuite/tests/driver/bytecode-object/Makefile
- testsuite/tests/driver/bytecode-object/all.T
- testsuite/tests/driver/bytecode-object/bytecode_object19.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object20.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object21.stderr
- + testsuite/tests/driver/bytecode-object/bytecode_object21.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object23.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object24.stdout
- testsuite/tests/driver/j-space/jspace.hs
- + testsuite/tests/module/T25901_exp_plain_wc.hs
- + testsuite/tests/module/T25901_exp_plain_wc.stderr
- + testsuite/tests/module/T25901_imp_plain_wc.hs
- + testsuite/tests/module/T25901_imp_plain_wc.stderr
- testsuite/tests/module/all.T
- + testsuite/tests/rename/should_compile/T25901_exp_1.hs
- + testsuite/tests/rename/should_compile/T25901_exp_1_helper.hs
- + testsuite/tests/rename/should_compile/T25901_exp_2.hs
- + testsuite/tests/rename/should_compile/T25901_exp_2_helper.hs
- + testsuite/tests/rename/should_compile/T25901_imp_hq.hs
- + testsuite/tests/rename/should_compile/T25901_imp_hu.hs
- + testsuite/tests/rename/should_compile/T25901_imp_sq.hs
- + testsuite/tests/rename/should_compile/T25901_imp_su.hs
- testsuite/tests/rename/should_compile/all.T
- + testsuite/tests/rename/should_fail/T25901_exp_fail_1.hs
- + testsuite/tests/rename/should_fail/T25901_exp_fail_1.stderr
- + testsuite/tests/rename/should_fail/T25901_exp_fail_1_helper.hs
- + testsuite/tests/rename/should_fail/T25901_exp_fail_2.hs
- + testsuite/tests/rename/should_fail/T25901_exp_fail_2.stderr
- + testsuite/tests/rename/should_fail/T25901_exp_fail_2_helper.hs
- + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_5.hs
- + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_5.stderr
- + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_6.hs
- + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_6.stderr
- + testsuite/tests/rename/should_fail/T25901_imp_hu_fail_4.hs
- + testsuite/tests/rename/should_fail/T25901_imp_hu_fail_4.stderr
- + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_2.hs
- + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_2.stderr
- + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_3.hs
- + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_3.stderr
- + testsuite/tests/rename/should_fail/T25901_imp_su_fail_1.hs
- + testsuite/tests/rename/should_fail/T25901_imp_su_fail_1.stderr
- testsuite/tests/rename/should_fail/all.T
- testsuite/tests/rts/KeepCafsBase.hs
- testsuite/tests/rts/all.T
- + testsuite/tests/simplCore/should_compile/T26588.hs
- + testsuite/tests/simplCore/should_compile/T26589.hs
- testsuite/tests/simplCore/should_compile/T8331.stderr
- testsuite/tests/simplCore/should_compile/all.T
- testsuite/tests/unboxedsums/UbxSumUnpackedSize.hs
- + testsuite/tests/warnings/should_compile/T25901_exp_dodgy.hs
- + testsuite/tests/warnings/should_compile/T25901_exp_dodgy.stderr
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_1.hs
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_1.stderr
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_2.hs
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_2.stderr
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_3.hs
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_3.stderr
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_4.hs
- + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_4.stderr
- + testsuite/tests/warnings/should_compile/T25901_helper_1.hs
- + testsuite/tests/warnings/should_compile/T25901_helper_2.hs
- + testsuite/tests/warnings/should_compile/T25901_helper_3.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_1.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_1.stderr
- + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_2.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_2.stderr
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_1.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_1.stderr
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_2.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_2.stderr
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_3.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_3.stderr
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_4.hs
- + testsuite/tests/warnings/should_compile/T25901_imp_unused_4.stderr
- testsuite/tests/warnings/should_compile/all.T
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Utils.hs
- utils/ghc-pkg/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml.hs
- utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
- utils/hpc
- utils/hsc2hs
The diff was not included because it is too large.
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Simon Hengel pushed new branch wip/sol/typo/gadt at Glasgow Haskell Compiler / GHC
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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 5 commits: task: Substitute some datatypes for newtypes
by Marge Bot (＠marge-bot) 03 Dec '25
by Marge Bot (＠marge-bot) 03 Dec '25
03 Dec '25
Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC
Commits:
beae879b by Rodrigo Mesquita at 2025-12-03T15:42:37+01:00
task: Substitute some datatypes for newtypes
* Substitutes some data type declarations for newtype declarations
* Adds comment to `LlvmConfigCache`, which must decidedly not be a
newtype.
Fixes #23555
- - - - -
1b88b0bc by mangoiv at 2025-12-03T18:15:08-05:00
Renamer: reinstate the template haskell level check in notFound
Out-of-scope names might be caused by a staging error, as is explained by
Note [Out of scope might be a staging error] in GHC.Tc.Utils.Env.hs.
This logic was assumed to be dead code after 217caad1 and has thus been
removed. This commit reintroduces it and thus fixes issue #26099.
- - - - -
93a4d388 by Zubin Duggal at 2025-12-03T18:15:11-05:00
testlib: Optionally include the way name in the expected output file
This allows us to have different outputs for different ways.
- - - - -
4ed9a10a by Zubin Duggal at 2025-12-03T18:15:11-05:00
testsuite: Accept output of tests failing in ext-interp way due to differing compilation requirements
Fixes #26552
- - - - -
420913f9 by Cheng Shao at 2025-12-03T18:15:12-05:00
devx: minor fixes for compile_flags.txt
This patch includes minor fixes for compile_flags.txt to improve
developer experience when using clangd as language server to hack on
RTS C sources:
- Ensure `-fPIC` is passed and `__PIC__` is defined, to be coherent
with `-DDYNAMIC` and ensure the `__PIC__` guarded code paths are
indexed
- Add the missing `-DRtsWay` definition, otherwise a few source files
like `RtsUtils.c` and `Trace.c` would produce clangd errors
- - - - -
18 changed files:
- compile_flags.txt
- compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
- compiler/GHC/CmmToAsm/PPC/RegInfo.hs
- compiler/GHC/Core/Map/Type.hs
- compiler/GHC/Driver/LlvmConfigCache.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
- compiler/GHC/Tc/Utils/Env.hs
- testsuite/driver/testlib.py
- + testsuite/tests/driver/T20696/T20696.stderr-ext-interp
- testsuite/tests/driver/T20696/all.T
- testsuite/tests/driver/fat-iface/all.T
- + testsuite/tests/driver/fat-iface/fat012.stderr-ext-interp
- + testsuite/tests/driver/fat-iface/fat015.stderr-ext-interp
- + testsuite/tests/splice-imports/SI07.stderr-ext-interp
- testsuite/tests/splice-imports/all.T
- + testsuite/tests/th/T26099.hs
- + testsuite/tests/th/T26099.stderr
- testsuite/tests/th/all.T
Changes:
=====================================
compile_flags.txt
=====================================
@@ -1,3 +1,6 @@
+-fPIC
+-U__PIC__
+-D__PIC__
-Wimplicit
-include
rts/include/ghcversion.h
@@ -27,3 +30,4 @@ rts/include/ghcversion.h
-DDEBUG
-DDYNAMIC
-DPROFILING
+-DRtsWay="rts_thr_debug_p_dyn"
=====================================
compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
=====================================
@@ -8,7 +8,7 @@ import GHC.Cmm
import GHC.Utils.Outputable
-data JumpDest = DestBlockId BlockId
+newtype JumpDest = DestBlockId BlockId
-- Debug Instance
instance Outputable JumpDest where
=====================================
compiler/GHC/CmmToAsm/PPC/RegInfo.hs
=====================================
@@ -27,7 +27,7 @@ import GHC.Cmm.CLabel
import GHC.Types.Unique
import GHC.Utils.Outputable (ppr, text, Outputable, (<>))
-data JumpDest = DestBlockId BlockId
+newtype JumpDest = DestBlockId BlockId
-- Debug Instance
instance Outputable JumpDest where
=====================================
compiler/GHC/Core/Map/Type.hs
=====================================
@@ -554,7 +554,7 @@ instance Eq (DeBruijn a) => Eq (DeBruijn (Maybe a)) where
-- We also need to do the same for multiplicity! Which, since multiplicities are
-- encoded simply as a 'Type', amounts to have a Trie for a pair of types. Tries
-- of pairs are composition.
-data BndrMap a = BndrMap (TypeMapG (MaybeMap TypeMapG a))
+newtype BndrMap a = BndrMap (TypeMapG (MaybeMap TypeMapG a))
-- TODO(22292): derive
instance Functor BndrMap where
=====================================
compiler/GHC/Driver/LlvmConfigCache.hs
=====================================
@@ -18,6 +18,8 @@ import System.IO.Unsafe
-- Currently implemented with unsafe lazy IO. But it could be implemented with
-- an IORef as the exposed interface is in IO.
data LlvmConfigCache = LlvmConfigCache LlvmConfig
+-- NB: It is crucial for this to be a datatype, not a newtype.
+-- Allocations can increase across the board over 20% otherwise (see the discussion on !10708 and non-final pipelines)
initLlvmConfigCache :: FilePath -> IO LlvmConfigCache
initLlvmConfigCache top_dir = pure $ LlvmConfigCache (unsafePerformIO $ initLlvmConfig top_dir)
=====================================
compiler/GHC/Driver/Pipeline/Phases.hs
=====================================
@@ -52,4 +52,4 @@ data TPhase res where
T_MergeForeign :: PipeEnv -> HscEnv -> FilePath -> [FilePath] -> TPhase FilePath
-- | A wrapper around the interpretation function for phases.
-data PhaseHook = PhaseHook (forall a . TPhase a -> IO a)
+newtype PhaseHook = PhaseHook (forall a . TPhase a -> IO a)
=====================================
compiler/GHC/Tc/Utils/Env.hs
=====================================
@@ -8,6 +8,7 @@
-- in module Language.Haskell.Syntax.Extension
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE MultiWayIf #-}
module GHC.Tc.Utils.Env(
TyThing(..), TcTyThing(..), TcId,
@@ -1213,6 +1214,20 @@ pprBinders bndrs = pprWithCommas ppr bndrs
notFound :: Name -> TcM TyThing
notFound name
= do { lcl_env <- getLclEnv
+ ; lvls <- getCurrentAndBindLevel name
+ ; if -- See Note [Out of scope might be a staging error]
+ | isUnboundName name -> failM -- If the name really isn't in scope
+ -- don't report it again (#11941)
+ -- the
+ -- the 'Nothing' case of 'getCurrentAndBindLevel'
+ -- currently means 'isUnboundName' but to avoid
+ -- introducing bugs after a refactoring of that
+ -- function, we check this completely independently
+ -- before scrutinizing lvls
+ | Just (_top_lvl_flag, bind_lvls, lvl@Splice {}) <- lvls
+ -> failWithTc (TcRnBadlyLevelled (LevelCheckSplice name Nothing) bind_lvls (thLevelIndex lvl) Nothing ErrorWithoutFlag)
+ | otherwise -> pure ()
+
; if isTermVarOrFieldNameSpace (nameNameSpace name)
then
-- This code path is only reachable with RequiredTypeArguments enabled
@@ -1243,14 +1258,23 @@ wrongThingErr expected thing name =
{- Note [Out of scope might be a staging error]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Consider
- x = 3
- data T = MkT $(foo x)
+ type T = Int
+ foo = $(1 :: T)
+
+GHC currently leaves the user some liberty when it comes to using
+types in a manner that is theoretically not well-staged.
+E.g. if `T` here were to be a value, we would reject the program with
+a staging error. Since it is a type though, we allow it for backwards
+compatibility reasons.
+
+However, in this case, we're just in the process of renaming a splice
+when trying to type check an expression involving a type, that hasn't
+even been added to the (type checking) environment yet. That is, why
+it is out of scope.
-where 'foo' is imported from somewhere.
+The reason why we cannot recognise this issue earlier is, that if we
+are not actually type checking the splice, i.e. if we're only using the
+name of the type (e.g. ''T), the program should be accepted.
-This is really a staging error, because we can't run code involving 'x'.
-But in fact the type checker processes types first, so 'x' won't even be
-in the type envt when we look for it in $(foo x). So inside splices we
-report something missing from the type env as a staging error.
-See #5752 and #5795.
+We stop and report a staging error.
-}
=====================================
testsuite/driver/testlib.py
=====================================
@@ -1971,7 +1971,7 @@ async def do_compile(name: TestName,
# of whether we expected the compilation to fail or not (successful
# compilations may generate warnings).
- expected_stderr_file = find_expected_file(name, 'stderr')
+ expected_stderr_file = find_expected_file(name, 'stderr', way)
actual_stderr_file = add_suffix(name, 'comp.stderr')
diff_file_name = in_testdir(add_suffix(name, 'comp.diff'))
@@ -2012,7 +2012,7 @@ async def compile_cmp_asm(name: TestName,
# of whether we expected the compilation to fail or not (successful
# compilations may generate warnings).
- expected_asm_file = find_expected_file(name, 'asm')
+ expected_asm_file = find_expected_file(name, 'asm', way)
actual_asm_file = add_suffix(name, 's')
if not await compare_outputs(way, 'asm',
@@ -2036,7 +2036,7 @@ async def compile_grep_asm(name: TestName,
if badResult(result):
return result
- expected_pat_file = find_expected_file(name, 'asm')
+ expected_pat_file = find_expected_file(name, 'asm', way)
actual_asm_file = add_suffix(name, 's')
if not grep_output(join_normalisers(normalise_errmsg),
@@ -2058,7 +2058,7 @@ async def compile_grep_core(name: TestName,
if badResult(result):
return result
- expected_pat_file = find_expected_file(name, 'substr-simpl')
+ expected_pat_file = find_expected_file(name, 'substr-simpl', way)
actual_core_file = add_suffix(name, 'dump-simpl')
if not grep_output(join_normalisers(normalise_errmsg),
@@ -2097,7 +2097,7 @@ async def compile_and_run__(name: TestName,
return result
if compile_stderr:
- expected_stderr_file = find_expected_file(name, 'ghc.stderr')
+ expected_stderr_file = find_expected_file(name, 'ghc.stderr', way)
actual_stderr_file = add_suffix(name, 'comp.stderr')
diff_file_name = in_testdir(add_suffix(name, 'comp.diff'))
@@ -2556,7 +2556,7 @@ def get_compiler_flags() -> List[str]:
async def stdout_ok(name: TestName, way: WayName) -> bool:
actual_stdout_file = add_suffix(name, 'run.stdout')
- expected_stdout_file = find_expected_file(name, 'stdout')
+ expected_stdout_file = find_expected_file(name, 'stdout', way)
extra_norm = join_normalisers(normalise_output, getTestOpts().extra_normaliser)
@@ -2583,7 +2583,7 @@ def dump_stdout( name: TestName ) -> None:
async def stderr_ok(name: TestName, way: WayName) -> bool:
actual_stderr_file = add_suffix(name, 'run.stderr')
- expected_stderr_file = find_expected_file(name, 'stderr')
+ expected_stderr_file = find_expected_file(name, 'stderr', way)
return await compare_outputs(way, 'stderr',
join_normalisers(normalise_errmsg, getTestOpts().extra_errmsg_normaliser), \
@@ -2688,7 +2688,7 @@ async def check_hp_ok(name: TestName) -> bool:
return False
async def check_prof_ok(name: TestName, way: WayName) -> bool:
- expected_prof_file = find_expected_file(name, 'prof.sample')
+ expected_prof_file = find_expected_file(name, 'prof.sample', way)
expected_prof_path = in_testdir(expected_prof_file)
# Check actual prof file only if we have an expected prof file to
@@ -3368,18 +3368,19 @@ def in_statsdir(name: Union[Path, str], suffix: str='') -> Path:
# Finding the sample output. The filename is of the form
#
-# <test>.stdout[-ws-<wordsize>][-<platform>|-<os>]
+# <test>.stdout[-ws-<wordsize>][-<platform>|-<os>][-<way>]
#
-def find_expected_file(name: TestName, suff: str) -> Path:
+def find_expected_file(name: TestName, suff: str, way: WayName) -> Path:
basename = add_suffix(name, suff)
# Override the basename if the user has specified one, this will then be
# subjected to the same name mangling scheme as normal to allow platform
# specific overrides to work.
basename = getTestOpts().use_specs.get(suff, basename)
- files = [str(basename) + ws + plat
+ files = [str(basename) + ws + plat + way_ext
for plat in ['-' + config.platform, '-' + config.os, '']
- for ws in ['-ws-' + config.wordsize, '']]
+ for ws in ['-ws-' + config.wordsize, '']
+ for way_ext in ['-' + way, '']]
for f in files:
if in_srcdir(f).exists():
=====================================
testsuite/tests/driver/T20696/T20696.stderr-ext-interp
=====================================
@@ -0,0 +1,3 @@
+[1 of 3] Compiling C ( C.hs, C.o )
+[2 of 3] Compiling B ( B.hs, B.o )
+[3 of 3] Compiling A ( A.hs, A.o )
=====================================
testsuite/tests/driver/T20696/all.T
=====================================
@@ -1,5 +1,4 @@
test('T20696', [extra_files(['A.hs', 'B.hs', 'C.hs'])
- , expect_broken_for(26552, ['ext-interp'])
, unless(ghc_dynamic(), skip)], multimod_compile, ['A', ''])
test('T20696-static', [extra_files(['A.hs', 'B.hs', 'C.hs'])
, when(ghc_dynamic(), skip)], multimod_compile, ['A', ''])
=====================================
testsuite/tests/driver/fat-iface/all.T
=====================================
@@ -9,12 +9,12 @@ test('fat010', [req_th,extra_files(['THA.hs', 'THB.hs', 'THC.hs']), copy_files],
# Check linking works when using -fbyte-code-and-object-code
test('fat011', [req_th, extra_files(['FatMain.hs', 'FatTH.hs', 'FatQuote.hs'])], multimod_compile, ['FatMain', '-fbyte-code-and-object-code -fprefer-byte-code'])
# Check that we use interpreter rather than enable dynamic-too if needed for TH
-test('fat012', [req_th, expect_broken_for(26552, ['ext-interp']), unless(ghc_dynamic(), skip), extra_files(['FatTH.hs', 'FatQuote.hs'])], multimod_compile, ['FatTH', '-fprefer-byte-code'])
+test('fat012', [req_th, unless(ghc_dynamic(), skip), extra_files(['FatTH.hs', 'FatQuote.hs'])], multimod_compile, ['FatTH', '-fprefer-byte-code'])
# Check that no objects are generated if using -fno-code and -fprefer-byte-code
test('fat013', [req_th, req_bco, extra_files(['FatTH.hs', 'FatQuote.hs'])], multimod_compile, ['FatTH', '-fno-code -fprefer-byte-code'])
# When using interpreter should not produce objects
test('fat014', [req_th, extra_files(['FatTH.hs', 'FatQuote.hs']), extra_run_opts('-fno-code')], ghci_script, ['fat014.script'])
-test('fat015', [req_th, expect_broken_for(26552, ['ext-interp']), unless(ghc_dynamic(), skip), extra_files(['FatQuote.hs', 'FatQuote1.hs', 'FatQuote2.hs', 'FatTH1.hs', 'FatTH2.hs', 'FatTHTop.hs'])], multimod_compile, ['FatTHTop', '-fno-code -fwrite-interface'])
+test('fat015', [req_th, unless(ghc_dynamic(), skip), extra_files(['FatQuote.hs', 'FatQuote1.hs', 'FatQuote2.hs', 'FatTH1.hs', 'FatTH2.hs', 'FatTHTop.hs'])], multimod_compile, ['FatTHTop', '-fno-code -fwrite-interface'])
test('T22807', [req_th, unless(ghc_dynamic(), skip), extra_files(['T22807A.hs', 'T22807B.hs'])]
, makefile_test, ['T22807'])
test('T22807_ghci', [req_th, unless(ghc_dynamic(), skip), extra_files(['T22807_ghci.hs'])]
=====================================
testsuite/tests/driver/fat-iface/fat012.stderr-ext-interp
=====================================
@@ -0,0 +1,2 @@
+[1 of 2] Compiling FatQuote ( FatQuote.hs, FatQuote.o )
+[2 of 2] Compiling FatTH ( FatTH.hs, FatTH.o )
=====================================
testsuite/tests/driver/fat-iface/fat015.stderr-ext-interp
=====================================
@@ -0,0 +1,6 @@
+[1 of 6] Compiling FatQuote ( FatQuote.hs, FatQuote.o, interpreted )
+[2 of 6] Compiling FatQuote1 ( FatQuote1.hs, interpreted )
+[3 of 6] Compiling FatQuote2 ( FatQuote2.hs, FatQuote2.o )
+[4 of 6] Compiling FatTH1 ( FatTH1.hs, nothing )
+[5 of 6] Compiling FatTH2 ( FatTH2.hs, nothing )
+[6 of 6] Compiling FatTHTop ( FatTHTop.hs, nothing )
=====================================
testsuite/tests/splice-imports/SI07.stderr-ext-interp
=====================================
@@ -0,0 +1,3 @@
+[1 of 3] Compiling SI05A ( SI05A.hs, SI05A.o )
+[2 of 3] Compiling SI07A ( SI07A.hs, nothing )
+[3 of 3] Compiling SI07 ( SI07.hs, nothing )
=====================================
testsuite/tests/splice-imports/all.T
=====================================
@@ -9,7 +9,7 @@ test('SI03', [extra_files(["SI01A.hs"])], multimod_compile_fail, ['SI03', '-v0']
test('SI04', [extra_files(["SI01A.hs"])], multimod_compile, ['SI04', '-v0'])
test('SI05', [extra_files(["SI01A.hs"])], multimod_compile_fail, ['SI05', '-v0'])
test('SI06', [extra_files(["SI01A.hs"])], multimod_compile, ['SI06', '-v0'])
-test('SI07', [expect_broken_for(26552, ['ext-interp']), unless(ghc_dynamic(), skip), extra_files(["SI05A.hs"])], multimod_compile, ['SI07', '-fwrite-interface -fno-code'])
+test('SI07', [unless(ghc_dynamic(), skip), extra_files(["SI05A.hs"])], multimod_compile, ['SI07', '-fwrite-interface -fno-code'])
# Instance tests
test('SI08', [extra_files(["ClassA.hs", "InstanceA.hs"])], multimod_compile_fail, ['SI08', '-v0'])
test('SI09', [extra_files(["ClassA.hs", "InstanceA.hs"])], multimod_compile, ['SI09', '-v0'])
=====================================
testsuite/tests/th/T26099.hs
=====================================
@@ -0,0 +1,6 @@
+{-# LANGUAGE TemplateHaskell #-}
+module M where
+
+type T = Int
+
+a = $(3 :: T)
=====================================
testsuite/tests/th/T26099.stderr
=====================================
@@ -0,0 +1,6 @@
+T26099.hs:6:12: error: [GHC-28914]
+ • Level error: ‘T’ is bound at level 0 but used at level -1
+ • In an expression type signature: T
+ In the expression: 3 :: T
+ In the untyped splice: $(3 :: T)
+
=====================================
testsuite/tests/th/all.T
=====================================
@@ -642,3 +642,4 @@ test('QQInQuote', normal, compile, [''])
test('QQTopError', normal, compile_fail, ['-fdiagnostics-show-caret'])
test('GadtConSigs_th_pprint1', normal, compile, [''])
test('GadtConSigs_th_dump1', normal, compile, ['-v0 -ddump-splices -dsuppress-uniques'])
+test('T26099', normal, compile_fail, [''])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/ceebca95e35051414945387f3677e2…
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[Git][ghc/ghc][wip/remove-legacy-define-in-foreign-stub] compiler: remove unused CPP code in foreign stub
by Cheng Shao (＠TerrorJack) 03 Dec '25
by Cheng Shao (＠TerrorJack) 03 Dec '25
03 Dec '25
Cheng Shao pushed to branch wip/remove-legacy-define-in-foreign-stub at Glasgow Haskell Compiler / GHC
Commits:
af3e2a55 by Cheng Shao at 2025-12-03T22:07:55+01:00
compiler: remove unused CPP code in foreign stub
This patch removes unused CPP code in the generated foreign stub:
- `#define IN_STG_CODE 0` is not needed, since `Rts.h` already
includes this definition
- The `if defined(__cplusplus)` code paths are not needed, since we
don't generate C++ stubs and don't include C++ headers in our stubs
- - - - -
1 changed file:
- compiler/GHC/Driver/CodeOutput.hs
Changes:
=====================================
compiler/GHC/Driver/CodeOutput.hs
=====================================
@@ -322,37 +322,27 @@ outputForeignStubs logger tmpfs dflags unit_state mod location stubs
Just stub_h -> do
OsPath.createDirectoryIfMissing True (OsPath.takeDirectory stub_h)
outputForeignStubs_help (OsPath.unsafeDecodeUtf stub_h) stub_h_output_w
- ("#include <HsFFI.h>\n" ++ cplusplus_hdr) cplusplus_ftr
+ "#include <HsFFI.h>\n"
putDumpFileMaybe logger Opt_D_dump_foreign
"Foreign export stubs" FormatC stub_c_output_d
stub_c_file_exists
<- outputForeignStubs_help stub_c stub_c_output_w
- ("#define IN_STG_CODE 0\n" ++
- "#include <Rts.h>\n" ++
- rts_includes ++
- ffi_includes ++
- cplusplus_hdr)
- cplusplus_ftr
- -- We're adding the default hc_header to the stub file, but this
- -- isn't really HC code, so we need to define IN_STG_CODE==0 to
- -- avoid the register variables etc. being enabled.
+ (rts_includes ++
+ ffi_includes)
return (stub_h_file_exists, if stub_c_file_exists
then Just stub_c
else Nothing )
- where
- cplusplus_hdr = "#if defined(__cplusplus)\nextern \"C\" {\n#endif\n"
- cplusplus_ftr = "#if defined(__cplusplus)\n}\n#endif\n"
-- It is more than likely that the stubs file will
-- turn out to be empty, in which case no file should be created.
-outputForeignStubs_help :: FilePath -> String -> String -> String -> IO Bool
-outputForeignStubs_help _fname "" _header _footer = return False
-outputForeignStubs_help fname doc_str header footer
- = do writeFile fname (header ++ doc_str ++ '\n':footer ++ "\n")
+outputForeignStubs_help :: FilePath -> String -> String -> IO Bool
+outputForeignStubs_help _fname "" _header = return False
+outputForeignStubs_help fname doc_str header
+ = do writeFile fname (header ++ doc_str ++ "\n")
return True
-- -----------------------------------------------------------------------------
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/af3e2a558fd489da67599bec7d0c5b2…
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[Git][ghc/ghc] Pushed new branch wip/remove-legacy-define-in-foreign-stub
by Cheng Shao (＠TerrorJack) 03 Dec '25
by Cheng Shao (＠TerrorJack) 03 Dec '25
03 Dec '25
Cheng Shao pushed new branch wip/remove-legacy-define-in-foreign-stub at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/remove-legacy-define-in-forei…
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[Git][ghc/ghc][wip/torsten.schmits/unit-index-debug] 5 commits: Use ModuleGraph for cache
by Torsten Schmits (＠torsten.schmits) 03 Dec '25
by Torsten Schmits (＠torsten.schmits) 03 Dec '25
03 Dec '25
Torsten Schmits pushed to branch wip/torsten.schmits/unit-index-debug at Glasgow Haskell Compiler / GHC
Commits:
36c660e0 by Matthew Pickering at 2025-12-03T20:19:51+01:00
Use ModuleGraph for cache
- - - - -
d93b96b1 by Matthew Pickering at 2025-12-03T20:19:51+01:00
OsPath for Map
- - - - -
45884d99 by Matthew Pickering at 2025-12-03T20:19:51+01:00
Set hpt deps
- - - - -
17191a26 by Matthew Pickering at 2025-12-03T20:19:51+01:00
HomeUnitMap
- - - - -
0278068c by Matthew Pickering at 2025-12-03T20:20:43+01:00
Use a name provider map for home packages
- - - - -
10 changed files:
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/State.hs
- ghc/Main.hs
- testsuite/tests/ghc-api/downsweep/OldModLocation.hs
- testsuite/tests/ghc-api/downsweep/PartialDownsweep.hs
Changes:
=====================================
compiler/GHC/Driver/Make.hs
=====================================
@@ -114,6 +114,8 @@ import Data.Either ( rights, partitionEithers, lefts )
import qualified Data.Map as Map
import qualified Data.Set as Set
+import GHC.Data.OsPath (OsPath)
+import qualified GHC.Data.OsPath as OsPath
import Control.Concurrent ( newQSem, waitQSem, signalQSem, ThreadId, killThread, forkIOWithUnmask )
import qualified GHC.Conc as CC
import Control.Concurrent.MVar
@@ -247,7 +249,7 @@ depanalPartial excluded_mods allow_dup_roots = do
liftIO $ flushFinderCaches (hsc_FC hsc_env) (hsc_unit_env hsc_env)
(errs, graph_nodes) <- liftIO $ downsweep
- hsc_env (mgModSummaries old_graph)
+ hsc_env (mgModSummaries old_graph) (Just old_graph)
excluded_mods allow_dup_roots
let
mod_graph = mkModuleGraph graph_nodes
@@ -1541,6 +1543,10 @@ warnUnnecessarySourceImports sccs = do
-- an import of this module mean.
type DownsweepCache = M.Map (UnitId, PkgQual, ModuleNameWithIsBoot) [Either DriverMessages ModSummary]
+moduleGraphNodeMap :: ModuleGraph -> M.Map NodeKey ModuleGraphNode
+moduleGraphNodeMap graph =
+ M.fromList [(mkNodeKey node, node) | node <- mgModSummaries' graph]
+
-----------------------------------------------------------------------------
--
-- | Downsweep (dependency analysis)
@@ -1559,6 +1565,8 @@ type DownsweepCache = M.Map (UnitId, PkgQual, ModuleNameWithIsBoot) [Either Driv
downsweep :: HscEnv
-> [ModSummary]
-- ^ Old summaries
+ -> Maybe ModuleGraph
+ -- ^ Existing module graph to reuse cached nodes from
-> [ModuleName] -- Ignore dependencies on these; treat
-- them as if they were package modules
-> Bool -- True <=> allow multiple targets to have
@@ -1568,10 +1576,10 @@ downsweep :: HscEnv
-- The non-error elements of the returned list all have distinct
-- (Modules, IsBoot) identifiers, unless the Bool is true in
-- which case there can be repeats
-downsweep hsc_env old_summaries excl_mods allow_dup_roots = do
+downsweep hsc_env old_summaries old_graph excl_mods allow_dup_roots = do
n_jobs <- mkWorkerLimit (hsc_dflags hsc_env)
new <- rootSummariesParallel n_jobs hsc_env summary
- downsweep_imports hsc_env old_summary_map excl_mods allow_dup_roots new
+ downsweep_imports hsc_env old_summary_map old_graph excl_mods allow_dup_roots new
where
summary = getRootSummary excl_mods old_summary_map
@@ -1580,21 +1588,23 @@ downsweep hsc_env old_summaries excl_mods allow_dup_roots = do
-- file was used in.
-- Reuse these if we can because the most expensive part of downsweep is
-- reading the headers.
- old_summary_map :: M.Map (UnitId, FilePath) ModSummary
+ old_summary_map :: M.Map (UnitId, OsPath) ModSummary
old_summary_map =
- M.fromList [((ms_unitid ms, msHsFilePath ms), ms) | ms <- old_summaries]
+ M.fromList [((ms_unitid ms, OsPath.unsafeEncodeUtf (msHsFilePath ms)), ms) | ms <- old_summaries]
downsweep_imports :: HscEnv
- -> M.Map (UnitId, FilePath) ModSummary
+ -> M.Map (UnitId, OsPath) ModSummary
+ -> Maybe ModuleGraph
-> [ModuleName]
-> Bool
-> ([(UnitId, DriverMessages)], [ModSummary])
-> IO ([DriverMessages], [ModuleGraphNode])
-downsweep_imports hsc_env old_summaries excl_mods allow_dup_roots (root_errs, rootSummariesOk)
+downsweep_imports hsc_env old_summaries old_graph excl_mods allow_dup_roots (root_errs, rootSummariesOk)
= do
let root_map = mkRootMap rootSummariesOk
checkDuplicates root_map
- (deps, map0) <- loopSummaries rootSummariesOk (M.empty, root_map)
+ let done0 = maybe M.empty moduleGraphNodeMap old_graph
+ (deps, map0) <- loopSummaries rootSummariesOk (done0, root_map)
let closure_errs = checkHomeUnitsClosed (hsc_unit_env hsc_env)
let unit_env = hsc_unit_env hsc_env
let tmpfs = hsc_tmpfs hsc_env
@@ -1725,7 +1735,7 @@ downsweep_imports hsc_env old_summaries excl_mods allow_dup_roots (root_errs, ro
getRootSummary ::
[ModuleName] ->
- M.Map (UnitId, FilePath) ModSummary ->
+ M.Map (UnitId, OsPath) ModSummary ->
HscEnv ->
Target ->
IO (Either (UnitId, DriverMessages) ModSummary)
@@ -2071,7 +2081,7 @@ mkRootMap summaries = Map.fromListWith (flip (++))
summariseFile
:: HscEnv
-> HomeUnit
- -> M.Map (UnitId, FilePath) ModSummary -- old summaries
+ -> M.Map (UnitId, OsPath) ModSummary -- old summaries
-> FilePath -- source file name
-> Maybe Phase -- start phase
-> Maybe (StringBuffer,UTCTime)
@@ -2080,7 +2090,7 @@ summariseFile
summariseFile hsc_env' home_unit old_summaries src_fn mb_phase maybe_buf
-- we can use a cached summary if one is available and the
-- source file hasn't changed,
- | Just old_summary <- M.lookup (homeUnitId home_unit, src_fn) old_summaries
+ | Just old_summary <- M.lookup (homeUnitId home_unit, src_fn_os) old_summaries
= do
let location = ms_location $ old_summary
@@ -2101,6 +2111,7 @@ summariseFile hsc_env' home_unit old_summaries src_fn mb_phase maybe_buf
where
-- change the main active unit so all operations happen relative to the given unit
hsc_env = hscSetActiveHomeUnit home_unit hsc_env'
+ src_fn_os = OsPath.unsafeEncodeUtf src_fn
-- src_fn does not necessarily exist on the filesystem, so we need to
-- check what kind of target we are dealing with
get_src_hash = case maybe_buf of
@@ -2190,7 +2201,7 @@ data SummariseResult =
summariseModule
:: HscEnv
-> HomeUnit
- -> M.Map (UnitId, FilePath) ModSummary
+ -> M.Map (UnitId, OsPath) ModSummary
-- ^ Map of old summaries
-> IsBootInterface -- True <=> a {-# SOURCE #-} import
-> Located ModuleName -- Imported module to be summarised
@@ -2251,7 +2262,7 @@ summariseModule hsc_env' home_unit old_summary_map is_boot (L _ wanted_mod) mb_p
Right ms -> FoundHome ms
new_summary_cache_check loc mod src_fn h
- | Just old_summary <- Map.lookup ((toUnitId (moduleUnit mod), src_fn)) old_summary_map =
+ | Just old_summary <- Map.lookup ((toUnitId (moduleUnit mod), src_fn_os)) old_summary_map =
-- check the hash on the source file, and
-- return the cached summary if it hasn't changed. If the
@@ -2262,6 +2273,8 @@ summariseModule hsc_env' home_unit old_summary_map is_boot (L _ wanted_mod) mb_p
Nothing ->
checkSummaryHash hsc_env (new_summary loc mod src_fn) old_summary loc h
| otherwise = new_summary loc mod src_fn h
+ where
+ src_fn_os = OsPath.unsafeEncodeUtf src_fn
new_summary :: ModLocation
-> Module
=====================================
compiler/GHC/Linker/Loader.hs
=====================================
@@ -358,7 +358,7 @@ loadCmdLineLibs' interp hsc_env pls = snd <$>
let hsc' = hscSetActiveUnitId uid hsc_env
-- Load potential dependencies first
(done', pls') <- foldM (\(done', pls') uid -> load done' uid pls') (done, pls)
- (homeUnitDepends (hsc_units hsc'))
+ (Set.toList (homeUnitDepends (hsc_units hsc')))
pls'' <- loadCmdLineLibs'' interp hsc' pls'
return $ (Set.insert uid done', pls'')
=====================================
compiler/GHC/Rename/Names.hs
=====================================
@@ -475,11 +475,14 @@ renamePkgQual unit_env query mn mb_pkg = case mb_pkg of
-- not really correct as pkg_fs is unlikely to be a valid unit-id but
-- we will report the failure later...
where
- home_names = map (\uid -> (uid, mkFastString <$> thisPackageName (homeUnitEnv_dflags (ue_findHomeUnitEnv uid unit_env)))) hpt_deps
+ home_names =
+ [ (uid, mkFastString <$> thisPackageName (homeUnitEnv_dflags (ue_findHomeUnitEnv uid unit_env)))
+ | uid <- S.toList hpt_deps
+ ]
units = ue_units unit_env
- hpt_deps :: [UnitId]
+ hpt_deps :: S.Set UnitId
hpt_deps = homeUnitDepends units
hscRenameRawPkgQual ::
=====================================
compiler/GHC/Unit/Env.hs
=====================================
@@ -142,7 +142,7 @@ ue_transitiveHomeDeps uid unit_env = Set.toList (loop Set.empty [uid])
loop acc (uid:uids)
| uid `Set.member` acc = loop acc uids
| otherwise =
- let hue = homeUnitDepends (homeUnitEnv_units (ue_findHomeUnitEnv uid unit_env))
+ let hue = Set.toList (homeUnitDepends (homeUnitEnv_units (ue_findHomeUnitEnv uid unit_env)))
in loop (Set.insert uid acc) (hue ++ uids)
=====================================
compiler/GHC/Unit/Finder.hs
=====================================
@@ -68,8 +68,9 @@ import Control.Monad
import Data.Time
import qualified Data.Map as M
import GHC.Driver.Env
- ( hsc_home_unit_maybe, HscEnv(hsc_FC, hsc_dflags, hsc_unit_env), hscUnitIndexQuery )
+ ( hsc_home_unit_maybe, HscEnv(hsc_FC, hsc_dflags, hsc_unit_env, hsc_mod_graph), hscUnitIndexQuery )
import GHC.Driver.Config.Finder
+import GHC.Unit.Module.Graph (mgHomeModuleMap, ModuleNameHomeMap)
import qualified Data.Set as Set
import qualified Data.List.NonEmpty as NE
@@ -163,30 +164,36 @@ findImportedModule hsc_env mod pkg_qual =
dflags = hsc_dflags hsc_env
fopts = initFinderOpts dflags
in do
+ let home_module_map = mgHomeModuleMap (hsc_mod_graph hsc_env)
query <- hscUnitIndexQuery hsc_env
- findImportedModuleNoHsc fc fopts (hsc_unit_env hsc_env) query mhome_unit mod pkg_qual
+ findImportedModuleNoHsc fc fopts (hsc_unit_env hsc_env) query home_module_map mhome_unit mod pkg_qual
findImportedModuleNoHsc
:: FinderCache
-> FinderOpts
-> UnitEnv
-> UnitIndexQuery
+ -> ModuleNameHomeMap
-> Maybe HomeUnit
-> ModuleName
-> PkgQual
-> IO FindResult
-findImportedModuleNoHsc fc fopts ue query mhome_unit mod_name mb_pkg =
+findImportedModuleNoHsc fc fopts ue query home_module_map mhome_unit mod_name mb_pkg =
case mb_pkg of
NoPkgQual -> unqual_import
ThisPkg uid | (homeUnitId <$> mhome_unit) == Just uid -> home_import
- | Just os <- lookup uid other_fopts -> home_pkg_import (uid, os)
+ | Just os <- M.lookup uid other_fopts_map -> home_pkg_import (uid, os)
| otherwise -> pprPanic "findImportModule" (ppr mod_name $$ ppr mb_pkg $$ ppr (homeUnitId <$> mhome_unit) $$ ppr uid $$ ppr (map fst all_opts))
OtherPkg _ -> pkg_import
where
+ (complete_units, module_name_map) = home_module_map
+ module_home_units = M.findWithDefault Set.empty mod_name module_name_map
+ current_unit_id = homeUnitId <$> mhome_unit
all_opts = case mhome_unit of
- Nothing -> other_fopts
- Just home_unit -> (homeUnitId home_unit, fopts) : other_fopts
+ Nothing -> other_fopts_list
+ Just home_unit -> (homeUnitId home_unit, fopts) : other_fopts_list
+ other_fopts_map = M.fromList other_fopts_list
home_import = case mhome_unit of
Just home_unit -> findHomeModule fc fopts home_unit mod_name
@@ -197,7 +204,7 @@ findImportedModuleNoHsc fc fopts ue query mhome_unit mod_name mb_pkg =
-- If the module is reexported, then look for it as if it was from the perspective
-- of that package which reexports it.
| mod_name `Set.member` finder_reexportedModules opts =
- findImportedModuleNoHsc fc opts ue query (Just $ DefiniteHomeUnit uid Nothing) mod_name NoPkgQual
+ findImportedModuleNoHsc fc opts ue query home_module_map (Just $ DefiniteHomeUnit uid Nothing) mod_name NoPkgQual
| mod_name `Set.member` finder_hiddenModules opts =
return (mkHomeHidden uid)
| otherwise =
@@ -206,7 +213,7 @@ findImportedModuleNoHsc fc fopts ue query mhome_unit mod_name mb_pkg =
-- Do not be smart and change this to `foldr orIfNotFound home_import hs` as
-- that is not the same!! home_import is first because we need to look within ourselves
-- first before looking at the packages in order.
- any_home_import = foldr1 orIfNotFound (home_import: map home_pkg_import other_fopts)
+ any_home_import = foldr1 orIfNotFound (home_import: map home_pkg_import other_fopts_list)
pkg_import = findExposedPackageModule fc fopts units query mod_name mb_pkg
@@ -217,9 +224,21 @@ findImportedModuleNoHsc fc fopts ue query mhome_unit mod_name mb_pkg =
units = case mhome_unit of
Nothing -> ue_units ue
Just home_unit -> homeUnitEnv_units $ ue_findHomeUnitEnv (homeUnitId home_unit) ue
- hpt_deps :: [UnitId]
+ hpt_deps :: Set.Set UnitId
hpt_deps = homeUnitDepends units
- other_fopts = map (\uid -> (uid, initFinderOpts (homeUnitEnv_dflags (ue_findHomeUnitEnv uid ue)))) hpt_deps
+ dep_providers = Set.intersection module_home_units hpt_deps
+ known_other_uids =
+ let providers = maybe dep_providers (\u -> Set.delete u dep_providers) current_unit_id
+ in Set.toList providers
+ unknown_units =
+ let candidates = Set.difference hpt_deps complete_units
+ excluded = maybe dep_providers (\u -> Set.insert u dep_providers) current_unit_id
+ in Set.toList (Set.difference candidates excluded)
+ other_home_uids = known_other_uids ++ unknown_units
+ other_fopts_list =
+ [ (uid, initFinderOpts (homeUnitEnv_dflags (ue_findHomeUnitEnv uid ue)))
+ | uid <- other_home_uids
+ ]
-- | Locate a plugin module requested by the user, for a compiler
-- plugin. This consults the same set of exposed packages as
=====================================
compiler/GHC/Unit/Module/Graph.hs
=====================================
@@ -18,6 +18,8 @@ module GHC.Unit.Module.Graph
, mgModSummaries
, mgModSummaries'
, mgLookupModule
+ , ModuleNameHomeMap
+ , mgHomeModuleMap
, showModMsg
, moduleGraphNodeModule
, moduleGraphNodeModSum
@@ -153,23 +155,31 @@ instance Outputable ModNodeKeyWithUid where
-- check that the module and its hs-boot agree.
--
-- The graph is not necessarily stored in topologically-sorted order. Use
+type ModuleNameHomeMap = (Set UnitId, Map.Map ModuleName (Set UnitId))
+
-- 'GHC.topSortModuleGraph' and 'GHC.Data.Graph.Directed.flattenSCC' to achieve this.
data ModuleGraph = ModuleGraph
{ mg_mss :: [ModuleGraphNode]
, mg_graph :: (ReachabilityIndex SummaryNode, NodeKey -> Maybe SummaryNode)
-- A cached transitive dependency calculation so that a lot of work is not
-- repeated whenever the transitive dependencies need to be calculated (for example, hptInstances)
+ , mg_home_map :: ModuleNameHomeMap
+ -- ^ For each module name, which home-unit UnitIds define it together with the set of units for which the listing is complete.
}
-- | Map a function 'f' over all the 'ModSummaries'.
-- To preserve invariants 'f' can't change the isBoot status.
mapMG :: (ModSummary -> ModSummary) -> ModuleGraph -> ModuleGraph
mapMG f mg@ModuleGraph{..} = mg
- { mg_mss = flip fmap mg_mss $ \case
- InstantiationNode uid iuid -> InstantiationNode uid iuid
- LinkNode uid nks -> LinkNode uid nks
- ModuleNode deps ms -> ModuleNode deps (f ms)
+ { mg_mss = new_mss
+ , mg_home_map = mkHomeModuleMap new_mss
}
+ where
+ new_mss =
+ flip fmap mg_mss $ \case
+ InstantiationNode uid iuid -> InstantiationNode uid iuid
+ LinkNode uid nks -> LinkNode uid nks
+ ModuleNode deps ms -> ModuleNode deps (f ms)
unionMG :: ModuleGraph -> ModuleGraph -> ModuleGraph
unionMG a b =
@@ -177,11 +187,27 @@ unionMG a b =
in ModuleGraph {
mg_mss = new_mss
, mg_graph = mkTransDeps new_mss
+ , mg_home_map = mkHomeModuleMap new_mss
}
mkTransDeps :: [ModuleGraphNode] -> (ReachabilityIndex SummaryNode, NodeKey -> Maybe SummaryNode)
mkTransDeps = first graphReachability {- module graph is acyclic -} . moduleGraphNodes False
+mkHomeModuleMap :: [ModuleGraphNode] -> ModuleNameHomeMap
+mkHomeModuleMap nodes =
+ (complete_units, provider_map)
+ where
+ provider_map =
+ Map.fromListWith Set.union
+ [ (ms_mod_name ms, Set.singleton (ms_unitid ms))
+ | ModuleNode _ ms <- nodes
+ ]
+ complete_units =
+ Set.fromList
+ [ ms_unitid ms
+ | ModuleNode _ ms <- nodes
+ ]
+
mgModSummaries :: ModuleGraph -> [ModSummary]
mgModSummaries mg = [ m | ModuleNode _ m <- mgModSummaries' mg ]
@@ -200,8 +226,11 @@ mgLookupModule ModuleGraph{..} m = listToMaybe $ mapMaybe go mg_mss
= Just ms
go _ = Nothing
+mgHomeModuleMap :: ModuleGraph -> ModuleNameHomeMap
+mgHomeModuleMap = mg_home_map
+
emptyMG :: ModuleGraph
-emptyMG = ModuleGraph [] (graphReachability emptyGraph, const Nothing)
+emptyMG = ModuleGraph [] (graphReachability emptyGraph, const Nothing) (Set.empty, Map.empty)
isTemplateHaskellOrQQNonBoot :: ModSummary -> Bool
isTemplateHaskellOrQQNonBoot ms =
@@ -213,9 +242,12 @@ isTemplateHaskellOrQQNonBoot ms =
-- not an element of the ModuleGraph.
extendMG :: ModuleGraph -> [NodeKey] -> ModSummary -> ModuleGraph
extendMG ModuleGraph{..} deps ms = ModuleGraph
- { mg_mss = ModuleNode deps ms : mg_mss
- , mg_graph = mkTransDeps (ModuleNode deps ms : mg_mss)
+ { mg_mss = new_mss
+ , mg_graph = mkTransDeps new_mss
+ , mg_home_map = mkHomeModuleMap new_mss
}
+ where
+ new_mss = ModuleNode deps ms : mg_mss
extendMGInst :: ModuleGraph -> UnitId -> InstantiatedUnit -> ModuleGraph
extendMGInst mg uid depUnitId = mg
=====================================
compiler/GHC/Unit/State.hs
=====================================
@@ -469,7 +469,7 @@ data UnitState = UnitState {
-- -Wunused-packages warning.
explicitUnits :: [(Unit, Maybe PackageArg)],
- homeUnitDepends :: [UnitId],
+ homeUnitDepends :: Set UnitId,
-- | This is a full map from 'ModuleName' to all modules which may possibly
-- be providing it. These providers may be hidden (but we'll still want
@@ -504,7 +504,7 @@ emptyUnitState = UnitState {
unwireMap = emptyUniqMap,
preloadUnits = [],
explicitUnits = [],
- homeUnitDepends = [],
+ homeUnitDepends = Set.empty,
moduleNameProvidersMap = emptyUniqMap,
pluginModuleNameProvidersMap = emptyUniqMap,
requirementContext = emptyUniqMap,
@@ -1573,7 +1573,7 @@ mkUnitState logger cfg index = do
let !state = UnitState
{ preloadUnits = dep_preload
, explicitUnits = explicit_pkgs
- , homeUnitDepends = Set.toList home_unit_deps
+ , homeUnitDepends = home_unit_deps
, unitInfoMap = pkg_db
, preloadClosure = emptyUniqSet
, moduleNameProvidersMap
=====================================
ghc/Main.hs
=====================================
@@ -893,7 +893,7 @@ checkUnitCycles :: DynFlags -> UnitEnvGraph HomeUnitEnv -> Ghc ()
checkUnitCycles dflags graph = processSCCs sccs
where
mkNode :: (UnitId, HomeUnitEnv) -> Node UnitId UnitId
- mkNode (uid, hue) = DigraphNode uid uid (homeUnitDepends (homeUnitEnv_units hue))
+ mkNode (uid, hue) = DigraphNode uid uid (Set.toList (homeUnitDepends (homeUnitEnv_units hue)))
nodes = map mkNode (unitEnv_elts graph)
sccs = stronglyConnCompFromEdgedVerticesOrd nodes
=====================================
testsuite/tests/ghc-api/downsweep/OldModLocation.hs
=====================================
@@ -47,13 +47,13 @@ main = do
liftIO $ do
- _emss <- downsweep hsc_env [] [] False
+ _emss <- downsweep hsc_env [] Nothing [] False
flushFinderCaches (hsc_FC hsc_env) (hsc_unit_env hsc_env)
createDirectoryIfMissing False "mydir"
renameFile "B.hs" "mydir/B.hs"
- (_, nodes) <- downsweep hsc_env [] [] False
+ (_, nodes) <- downsweep hsc_env [] Nothing [] False
-- If 'checkSummaryTimestamp' were to call 'addHomeModuleToFinder' with
-- (ms_location old_summary) like summariseFile used to instead of
=====================================
testsuite/tests/ghc-api/downsweep/PartialDownsweep.hs
=====================================
@@ -168,7 +168,7 @@ go label mods cnd =
setTargets [tgt]
hsc_env <- getSession
- (_, nodes) <- liftIO $ downsweep hsc_env [] [] False
+ (_, nodes) <- liftIO $ downsweep hsc_env [] Nothing [] False
it label $ cnd (mapMaybe moduleGraphNodeModSum nodes)
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e02bbc621ee3fd14a7c57729fb775e…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e02bbc621ee3fd14a7c57729fb775e…
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[Git][ghc/ghc] Pushed new branch wip/torsten.schmits/mercury-ghc910-mhu-transitive-th-deps-unit-index-mkdepend-patch
by Torsten Schmits (＠torsten.schmits) 03 Dec '25
by Torsten Schmits (＠torsten.schmits) 03 Dec '25
03 Dec '25
Torsten Schmits pushed new branch wip/torsten.schmits/mercury-ghc910-mhu-transitive-th-deps-unit-index-mkdepend-patch at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/torsten.schmits/mercury-ghc91…
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[Git][ghc/ghc][wip/T26343] 281 commits: hadrian: Pass lib & include directories to ghc `Setup configure`
by Teo Camarasu (＠teo) 03 Dec '25
by Teo Camarasu (＠teo) 03 Dec '25
03 Dec '25
Teo Camarasu pushed to branch wip/T26343 at Glasgow Haskell Compiler / GHC
Commits:
41a448e5 by Ben Gamari at 2025-09-04T19:21:43-04:00
hadrian: Pass lib & include directories to ghc `Setup configure`
- - - - -
46bb9a79 by Ben Gamari at 2025-09-04T19:21:44-04:00
rts/IPE: Fix compilation when zstd is enabled
This was broken by the refactoring undertaken in
c80dd91c0bf6ac034f0c592f16c548b9408a8481.
Closes #26312.
- - - - -
138a6e34 by sheaf at 2025-09-04T19:22:46-04:00
Make mkCast assertion a bit clearer
This commit changes the assertion message that gets printed when one
calls mkCast with a coercion whose kind does not match the type of the
inner expression. I always found the assertion message a bit confusing,
as it didn't clearly state what exactly was the error.
- - - - -
9d626be1 by sheaf at 2025-09-04T19:22:46-04:00
Simplifier/rules: fix mistakes in Notes & comments
- - - - -
94b62aa7 by Simon Peyton Jones at 2025-09-08T03:37:14-04:00
Refactor ForAllCo
This is a pure refactor, addressing #26389.
It arranges that the kind coercion in a ForAllCo is a MCoercion, rather
than a plain Coercion, thus removing redundancy in the common case.
See (FC8) in Note [ForAllCo]
It's a nice cleanup.
- - - - -
624afa4a by sheaf at 2025-09-08T03:38:05-04:00
Use tcMkScaledFunTys in matchExpectedFunTys
We should use tcMkScaledFunTys rather than mkScaledFunTys in
GHC.Tc.Utils.Unify.matchExpectedFunTys, as the latter crashes
when the kind of the result type is a bare metavariable.
We know the result is always Type-like, so we don't need scaledFunTys
to try to rediscover that from the kind.
Fixes #26277
- - - - -
0975d2b6 by sheaf at 2025-09-08T03:38:54-04:00
Revert "Remove hptAllFamInstances usage during upsweep"
This reverts commit 3bf6720eff5e86e673568e756161e6d6150eb440.
- - - - -
0cf34176 by soulomoon at 2025-09-08T03:38:54-04:00
Family consistency checks: add test for #26154
This commit adds the test T26154, to make sure that GHC doesn't crash
when performing type family consistency checks. This test case
was extracted from Agda.
Fixes #26154
- - - - -
ba210d98 by Simon Peyton Jones at 2025-09-08T16:26:36+01:00
Report solid equality errors before custom errors
This MR fixes #26255 by
* Reporting solid equality errors like
Int ~ Bool
before "custom type errors". See comments in `report1` in
`reportWanteds`
* Suppressing errors that arise from superclasses of
Wanteds. See (SCE1) in Note [Suppressing confusing errors]
More details in #26255.
- - - - -
b6249140 by Simon Peyton Jones at 2025-09-10T10:42:38-04:00
Fix a scoping error in Specialise
This small patch fixes #26329, which triggered a scoping error.
Test is in T21391, with -fpolymorphic-specialisation enabled
- - - - -
45305ab8 by sheaf at 2025-09-10T10:43:29-04:00
Make rationalTo{Float,Double} inline in phase 0
We hold off on inlining these until phase 0 to allow constant-folding
rules to fire. However, once we get to phase 0, we should inline them,
e.g. to expose unboxing opportunities.
See CLC proposal #356.
- - - - -
0959d4bc by Andreas Klebinger at 2025-09-10T10:44:12-04:00
Add regression test for #26056
- - - - -
dc79593d by sheaf at 2025-09-10T10:45:01-04:00
Deep subsumption: unify mults without tcEqMult
As seen in #26332, we may well end up with a non-reflexive multiplicity
coercion when doing deep subsumption. We should do the same thing that
we do without deep subsumption: unify the multiplicities normally,
without requiring that the coercion is reflexive (which is what
'tcEqMult' was doing).
Fixes #26332
- - - - -
4bfe2269 by sheaf at 2025-09-10T10:45:50-04:00
lint-codes: fixup MSYS drive letter on Windows
This change ensures that System.Directory.listDirectory doesn't trip up
on an MSYS-style path like '/c/Foo' when trying to list all testsuite
stdout/stderr files as required for testing coverage of GHC diagnostic
codes in the testsuite.
Fixes #25178
- - - - -
56540775 by Ben Gamari at 2025-09-10T10:46:32-04:00
gitlab-ci: Disable split sections on FreeBSD
Due to #26303.
- - - - -
1537784b by Moritz Angermann at 2025-09-10T10:47:13-04:00
Improve mach-o relocation information
This change adds more information about the symbol and addresses
we try to relocate in the linker. This significantly helps when
deubbging relocation issues reported by users.
- - - - -
4e67855b by Moritz Angermann at 2025-09-10T10:47:54-04:00
test.mk expect GhcLeadingUnderscore, not LeadingUnderscore (in line with the other Ghc prefixed variables.
- - - - -
c1cdd265 by Moritz Angermann at 2025-09-10T10:48:35-04:00
testsuite: Fix broken exec_signals_child.c
There is no signal 0. The signal mask is 1-32.
- - - - -
99ac335c by Moritz Angermann at 2025-09-10T10:49:15-04:00
testsuite: clarify Windows/Darwin locale rationale for skipping T6037 T2507 T8959a
- - - - -
0e8fa77a by Moritz Angermann at 2025-09-10T10:49:56-04:00
Skip broken tests on macOS (due to leading underscore not handled properly in the expected output.)
- - - - -
28570c59 by Zubin Duggal at 2025-09-10T10:50:37-04:00
docs(sphinx): fix links to reverse flags when using the :ghc-flag:`-fno-<flag>` syntax
This solution is rather hacky and I suspect there is a better way to do this but I don't know
enough about Sphinx to do better.
Fixes #26352
- - - - -
d17257ed by Cheng Shao at 2025-09-10T17:01:27+02:00
rel-eng: update alpine images to 3.22
This patch is a part of #25876 and updates alpine images to 3.22,
while still retaining 3.12 for x86_64 fully_static bindists.
-------------------------
Metric Decrease:
MultiComponentModulesRecomp
-------------------------
- - - - -
db3276bb by Sylvain Henry at 2025-09-11T11:27:28-04:00
T16180: indicate that the stack isn't executable
- - - - -
11eeeba7 by Sylvain Henry at 2025-09-11T11:27:28-04:00
Fix some tests (statically linked GHC vs libc)
When GHC is linked statically, the stdout C global variable that GHC uses
isn't shared with the stdout C global variable used by loaded code.
As a consequence, the latter must be explicitly flushed because GHC
won't flush it before exiting.
- - - - -
80a07571 by Sylvain Henry at 2025-09-11T11:28:18-04:00
Testsuite: fix debug_rts detection
Running the testsuite without Hadrian should set config.debug_rts
correctly too.
- - - - -
62ae97de by Duncan Coutts at 2025-09-12T13:23:33-04:00
Handle heap allocation failure in I/O primops
The current I/O managers do not use allocateMightFail, but future ones
will. To support this properly we need to be able to return to the
primop with a failure. We simply use a bool return value.
Currently however, we will just throw an exception rather than calling
the GC because that's what all the other primops do too.
For the general issue of primops invoking GC and retrying, see
https://gitlab.haskell.org/ghc/ghc/-/issues/24105
- - - - -
cb9093f5 by Duncan Coutts at 2025-09-12T13:23:33-04:00
Move (and rename) scheduleStartSignalHandlers into RtsSignals.h
Previously it was a local helper (static) function in Schedule.c.
Rename it to startPendingSignalHandlers and deifine it as an inline
header function in RtsSignals.h. So it should still be fast.
Each (new style) I/O manager is going to need to do the same, so eliminating
the duplication now makes sense.
- - - - -
9736d44a by Duncan Coutts at 2025-09-12T13:23:33-04:00
Reduce detail in printThreadBlockage I/O blocking cases
The printThreadBlockage is used in debug tracing output.
For the cases BlockedOn{Read,Write,Delay} the output previously included
the fd that was being waited on, and the delay target wake time.
Superficially this sounds useful, but it's clearly not that useful
because it was already wrong for the Win32 non-threaded I/O manager. In
that situation it will print garbage (the async_result pointer, cast to
a fd or a time).
So given that it apparently never mattered that the information was
accurate, then it's hardly a big jump to say it doesn't matter if it is
present at all.
A good reason to remove it is that otherwise we have to make a new
API and a per-I/O manager implementation to fetch the information. And
for some I/O manager implementations, this information is not available.
It is not available in the win32 non-threaded I/O manager. And for some
future Linux ones, there is no need for the fd to be stored, so storing
it would be just extra space used for very little gain.
So the simplest thing is to just remove the detail.
- - - - -
bc0f2d5d by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add TimeoutQueue.{c,h} and corresponding tests
A data structure used to efficiently manage a collection of timeouts.
It is a priority queue based on absolute expiry time. It uses 64bit
high-precision Time for the keys. The values are normal closures which
allows for example using MVars for unblocking.
It is common in many applications for timeouts to be created and then
deleted or altered before they expire. Thus the choice of data structure
for timeouts should support this efficiently. The implementation choice
here is a leftist heap with the extra feature that it supports deleting
arbitrary elements, provided the caller retain a pointer to the element.
While the deleteMin operation takes O(log n) time, as in all heap
structures, the delete operation for arbitrary elements /typically/
takes O(1), and only O(log n) in the worst case. In practice, when
managing thousands of timeouts it can be a factor of 10 faster to delete
a random timeout queue element than to remove the minimum element. This
supports the common use case.
The plan is to use it in some of the RTS-side I/O managers to support
their timer functionality. In this use case the heap value will be an
MVar used for each timeout to unblock waiting threads.
- - - - -
d1679c9d by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add ClosureTable.{c,h} and corresponding tests
A table of pointers to closures on the GC heap with stable indexes.
It provides O(1) alloc, free and lookup. The table can be expanded
using a simple doubling strategy: in which case allocation is typically
O(1) and occasionally O(n) for overall amortised O(1). No shrinking is
used.
The table itself is heap allocated, and points to other heap objects.
As such it's necessary to use markClosureTable to ensure the table is
used as a GC root to keep the table entries alive, and maintain proper
pointers to them as the GC moves heap objects about.
It is designed to be allocated and accesses exclusively from a single
capability, enabling it to work without any locking. It is thus similar
to the StablePtr table, but per-capability which removes the need for
locking. It _should_ also provide lower GC pause times with the
non-moving GC by spending only O(1) time in markClosureTable, vs O(n)
for markStablePtrTable.
The plan is to use it in some of the I/O managers to keep track of
in-flight I/O operations (but not timers). This allows the tracking
info to be kept on the (unpinned) GC heap, and shared with Haskell
code, and by putting a pointer to the tracking information in a table,
the index remains stable and can be passed via foreign code (like the
kernel).
- - - - -
78cb8dd5 by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add the StgAsyncIOOp closure type
This is intended to be used by multiple I/O managers to help with
tracking in-flight I/O operations.
It is called asynchronous because from the point of view of the RTS we
have many such operations in progress at once. From the point of view of
a Haskell thread of course it can look synchronous.
- - - - -
a2839896 by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add StgAsyncIOOp and StgTimeoutQueue to tso->block_info
These will be used by new I/O managers, for threads blocked on I/O or
timeouts.
- - - - -
fdc2451c by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add a new I/O manager based on poll()
This is a proof of concept I/O manager, to show how to add new ones
neatly, using the ClosureTable and TimeoutQueue infrastructure.
It uses the old unix poll() API, so it is of course limited in
performance by that, but it should have the benefit of wide
compatibility. Also we neatly avoid a name clash with the existing
select() I/O manager.
Compared to the select() I/O manager:
1. beause it uses poll() it is not limited to 1024 file descriptors
(but it's still O(n) so don't expect great performance);
2. it should have much faster threadDelay (when using it in lots of
threads at once) because it's based on the new TimeoutQueue which is
O(log n) rather than O(n).
Some of the code related to timers/timouts is put into a shared module
rts/posix/Timeout.{h,c} since it is intended to be shared with other
similar I/O managers.
- - - - -
6c273b76 by Duncan Coutts at 2025-09-12T13:23:34-04:00
Document the I/O managers in the user guide
and note the new poll I/O manager in the release notes.
- - - - -
824fab74 by Duncan Coutts at 2025-09-12T13:23:34-04:00
Use the poll() I/O manager by default
That is, for the non-threaded RTS, prefer the poll I/O manager over the
legacy select() one, if both can be enabled.
This patch is primarily for CI testing, so we should probably remove
this patch before merging. We can change defaults later after wider
testing and feedback.
- - - - -
39392532 by Luite Stegeman at 2025-09-12T13:24:16-04:00
Support larger unboxed sums
Change known constructor encoding for sums in interfaces to use
11 bits for both the arity and the alternative (up from 8 and 6,
respectively)
- - - - -
2af12e21 by Luite Stegeman at 2025-09-12T13:24:16-04:00
Decompose padding smallest-first in Cmm toplevel data constructors
This makes each individual padding value aligned
- - - - -
418fa78f by Luite Stegeman at 2025-09-12T13:24:16-04:00
Use slots smaller than word as tag for smaller unboxed sums
This packs unboxed sums more efficiently by allowing
Word8, Word16 and Word32 for the tag field if the number of
constructors is small enough
- - - - -
8d7e912f by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
ghc-toolchain: Use ByteOrder rather than new Endianness
Don't introduce a duplicate datatype when the previous one is equivalent
and already used elsewhere. This avoids unnecessary translation between
the two.
- - - - -
7d378476 by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
Read Toolchain.Target files rather than 'settings'
This commit makes GHC read `lib/targets/default.target`, a file with a
serialized value of `ghc-toolchain`'s `GHC.Toolchain.Target`.
Moreover, it removes all the now-redundant entries from `lib/settings`
that are configured as part of a `Target` but were being written into
`settings`.
This makes it easier to support multiple targets from the same compiler
(aka runtime retargetability). `ghc-toolchain` can be re-run many times
standalone to produce a `Target` description for different targets, and,
in the future, GHC will be able to pick at runtime amongst different
`Target` files.
This commit only makes it read the default `Target` configured in-tree
or configured when installing the bindist.
The remaining bits of `settings` need to be moved to `Target` in follow
up commits, but ultimately they all should be moved since they are
per-target relevant.
Fixes #24212
On Windows, the constant overhead of parsing a slightly more complex
data structure causes some small-allocation tests to wiggle around 1 to
2 extra MB (1-2% in these cases).
-------------------------
Metric Increase:
MultiLayerModulesTH_OneShot
T10421
T10547
T12234
T12425
T13035
T18140
T18923
T9198
TcPlugin_RewritePerf
-------------------------
- - - - -
e0780a16 by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
ghc-toolchain: Move TgtHasLibm to per-Target file
TargetHasLibm is now part of the per-target configuration
Towards #26227
- - - - -
8235dd8c by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
ghc-toolchain: Move UseLibdw to per-Target file
To support DWARF unwinding, the RTS must be built with the -f+libdw flag
and with the -DUSE_LIBDW macro definition. These flags are passed on
build by Hadrian when --enable-dwarf-unwinding is specified at configure
time.
Whether the RTS was built with support for DWARF is a per-target
property, and as such, it was moved to the per-target
GHC.Toolchain.Target.Target file.
Additionally, we keep in the target file the include and library paths
for finding libdw, since libdw should be checked at configure time (be
it by configure, or ghc-toolchain, that libdw is properly available).
Preserving the user-given include paths for libdw facilitates in the
future building the RTS on demand for a given target (if we didn't keep
that user input, we couldn't)
Towards #26227
- - - - -
d5ecf2e8 by Rodrigo Mesquita at 2025-09-12T17:57:25-04:00
ghc-toolchain: Make "Support SMP" a query on a Toolchain.Target
"Support SMP" is merely a function of target, so we can represent it as
such in `ghc-toolchain`.
Hadrian queries the Target using this predicate to determine how to
build GHC, and GHC queries the Target similarly to report under --info
whether it "Support SMP"
Towards #26227
- - - - -
e07b031a by Rodrigo Mesquita at 2025-09-12T17:57:25-04:00
ghc-toolchain: Make "tgt rts linker only supports shared libs" function on Target
Just like with "Support SMP", "target RTS linker only supports shared
libraries" is a predicate on a `Target` so we can just compute it when
necessary from the given `Target`.
Towards #26227
- - - - -
14123ee6 by Simon Peyton Jones at 2025-09-12T17:58:07-04:00
Solve forall-constraints via an implication, again
In this earlier commit:
commit 953fd8f1dc080f1c56e3a60b4b7157456949be29
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Mon Jul 21 10:06:43 2025 +0100
Solve forall-constraints immediately, or not at all
I used a all-or-nothing strategy for quantified constraints
(aka forall-constraints). But alas that fell foul of #26315,
and #26376.
So this MR goes back to solving a quantified constraint by
turning it into an implication; UNLESS we are simplifying
constraints from a SPECIALISE pragma, in which case the
all-or-nothing strategy is great. See:
Note [Solving a Wanted forall-constraint]
Other stuff in this MR:
* TcSMode becomes a record of flags, rather than an enumeration
type; much nicer.
* Some fancy footwork to avoid error messages worsening again
(The above MR made them better; we want to retain that.)
See `GHC.Tc.Errors.Ppr.pprQCOriginExtra`.
-------------------------
Metric Decrease:
T24471
-------------------------
- - - - -
e6c192e2 by Simon Peyton Jones at 2025-09-12T17:58:07-04:00
Add a test case for #26396
...same bug ast #26315
- - - - -
8f3d80ff by Luite Stegeman at 2025-09-13T08:43:09+02:00
Use mkVirtHeapOffsets for reconstructing terms in RTTI
This makes mkVirtHeapOffsets the single source of truth for
finding field offsets in closures.
- - - - -
eb389338 by Luite Stegeman at 2025-09-13T08:43:09+02:00
Sort non-pointer fields by size for more efficient packing
This sorts non-pointer fields in mkVirtHeapOffsets, always
storing the largest field first. The relative order of
equally sized fields remains unchanged.
This reduces wasted padding/alignment space in closures with
differently sized fields.
- - - - -
99b233f4 by Alison at 2025-09-13T16:51:04-04:00
ghc-heap: Fix race condition with profiling builds
Apply the same fix from Closures.hs (64fd0fac83) to Heap.hs by adding
empty imports to make way-dependent dependencies visible to `ghc -M`.
Fixes #15197, #26407
- - - - -
77deaa7a by Cheng Shao at 2025-09-14T21:29:45-04:00
hadrian: build in-tree gmp with -fvisibility=hidden
When hadrian builds in-tree gmp, it should build the shared objects
with -fvisibility=hidden. The gmp symbols are only used by bignum
logic in ghc-internal and shouldn't be exported by the ghc-internal
shared library. We should always strive to keep shared library symbol
table lean, which benefits platforms with slow dynamic linker or even
hard limits about how many symbols can be exported (e.g. macos dyld,
win32 dll and wasm dyld).
- - - - -
42a18960 by Cheng Shao at 2025-09-14T21:30:26-04:00
Revert "wasm: add brotli compression for ghci browser mode"
This reverts commit 731217ce68a1093b5f9e26a07d5bd2cdade2b352.
Benchmarks show non-negligible overhead when browser runs on the same
host, which is the majority of actual use cases.
- - - - -
e6755b9f by Cheng Shao at 2025-09-14T21:30:26-04:00
wasm: remove etag logic in ghci browser mode web server
This commit removes the etag logic in dyld script's ghci browser mode
web server. It was meant to support caching logic of wasm shared
libraries, but even if the port is manually specified to make caching
even relevant, for localhost the extra overhead around etag logic is
simply not worth it according to benchmarks.
- - - - -
ac5859b9 by sheaf at 2025-09-16T14:58:38-04:00
Add 'Outputable Natural' instance
This commit adds an Outputable instance for the Natural natural-number type,
as well as a "natural :: Natural -> SDoc" function that mirrors the existing
"integer" function.
- - - - -
d48ebc23 by Cheng Shao at 2025-09-16T14:59:18-04:00
autoconf: emit warning instead of error for FIND_PYTHON logic
This patch makes FIND_PYTHON logic emit warning instead of error, so
when the user doesn't expect to run the testsuite driver (especially
when installing a bindist), python would not be mandatory. Fixes #26347.
- - - - -
54b5950e by Sylvain Henry at 2025-09-17T04:45:18-04:00
Print fully qualified unit names in name mismatch
It's more user-friendly to directly print the right thing instead of
requiring the user to retry with the additional `-dppr-debug` flag.
- - - - -
403cb665 by Ben Gamari at 2025-09-17T04:46:00-04:00
configure: Fix consistency between distrib and source CC check
Previously distrib/configure.ac did not
include `cc`.
Closes #26394.
- - - - -
2dcd4cb9 by Oleg Grenrus at 2025-09-17T04:46:41-04:00
Use isPrint in showUnique
The comment say
```
-- Avoid emitting non-printable characters in pretty uniques. See #25989.
```
so let the code do exactly that.
There are tags (at least : and 0 .. 9) which weren't in A .. z range.
- - - - -
e5dd754b by Oleg Grenrus at 2025-09-17T04:46:42-04:00
Shorten in-module links in hyperlinked source
Instead of href="This.Module#ident" to just "#ident"
- - - - -
63189b2c by Oleg Grenrus at 2025-09-17T04:46:42-04:00
Use showUnique in internalAnchorIdent
Showing the key of Unique as a number is generally not a great idea.
GHC Unique has a tag in high bits, so the raw number is unnecessarily
big.
So now we have
```html
<a href="#l-rvgK"><span class="hs-identifier hs-var hs-var">bar</span></a>
```
instead of
```html
<a href="#local-6989586621679015689"><span class="hs-identifier hs-var hs-var">bar</span></a>
```
Together with previous changes of shorter intra-module links the effect
on compressed files is not huge, that is expected as we simply remove
repetitive contents which pack well.
```
12_694_206 Agda-2.9.0-docs-orig.tar.gz
12_566_065 Agda-2.9.0-docs.tar.gz
```
However when unpacked, the difference can be significant,
e.g. Agda's largest module source got 5% reduction:
```
14_230_117 Agda.Syntax.Parser.Parser.html
13_422_109 Agda.Syntax.Parser.Parser.html
```
The whole hyperlinked source code directory got similar reduction
```
121M Agda-2.9.0-docs-orig/src
114M Agda-2.9.0-docs/src
```
For the reference, sources are about 2/3 of the generated haddocks
```
178M Agda-2.9.0-docs-old
172M Agda-2.9.0-docs
```
so we get around 3.5% size reduction overall. Not bad for a small local
changes.
- - - - -
6f63f57b by Stefan Schulze Frielinghaus at 2025-09-17T04:47:22-04:00
rts: Fix alignment for gen_workspace #26334
After a0fa4941903272c48b050d24e93eec819eff51bd bootstrap is broken on
s390x and errors out with
rts/sm/GCThread.h:207:5: error:
error: alignment of array elements is greater than element size
207 | gen_workspace gens[];
| ^~~~~~~~~~~~~
The alignment constraint is applied via the attribute to the type
gen_workspace and leaves the underlying type struct gen_workspace_
untouched. On Aarch64, x86, and s390x the struct has a size of 128
bytes. On Aarch64 and x86 the alignments of 128 and 64 are divisors of
the size, respectively, which is why the type is a viable member type
for an array. However, on s390x, the alignment is 256 and therefore is
not a divisor of the size and hence cannot be used for arrays.
Basically I see two fixes here. Either decrease the alignment
requirement on s390x, or by applying the alignment constraint on the
struct itself. The former might affect performance as noted in
a0fa4941903272c48b050d24e93eec819eff51bd. The latter introduces padding
bits whenever necessary in order to ensure that
sizeof(gen_workspace[N])==N*sizeof(gen_workspace) holds which is done by
this patch.
- - - - -
06d25623 by Cheng Shao at 2025-09-17T19:32:27-04:00
ghci: add :shell command
This patch adds a new :shell command to ghci which works similarly to
:!, except it guarantees to run the command via sh -c. On POSIX hosts
the behavior is identical to :!, but on Windows it uses the msys2
shell instead of system cmd.exe shell. This is convenient when writing
simple ghci scripts that run simple POSIX commands, and the behavior
can be expected to be coherent on both Windows and POSIX.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
186054f7 by Cheng Shao at 2025-09-17T19:32:27-04:00
testsuite: remove legacy :shell trick
This commit makes use of the built-in :shell functionality in ghci in
the test cases, and remove the legacy :shell trick.
- - - - -
0a3a4aa3 by Cheng Shao at 2025-09-17T19:32:27-04:00
docs: document :shell in ghci
This commit documents the :shell command in ghci.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
a4ff12bb by Cheng Shao at 2025-09-17T19:33:09-04:00
ghc-internal: fix codepages program
codepages was not properly updated during the base -> ghc-internal
migration, this commit fixes it.
- - - - -
7e094def by Cheng Shao at 2025-09-17T19:33:09-04:00
ghc-internal: relax ucd2haskell cabal upper bounds
This commit relaxes ucd2haskell cabal upper bounds to make it runnable
via ghc 9.12/9.14.
- - - - -
7077c9f7 by Cheng Shao at 2025-09-17T19:33:09-04:00
ghc-internal: update to unicode 17.0.0
This commit updates the generated code in ghc-internal to match
unicode 17.0.0.
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cef8938f by sheaf at 2025-09-17T19:34:09-04:00
Bad record update msg: allow out-of-scope datacons
This commit ensures that, when we encounter an invalid record update
(because no constructor exists which contains all of the record fields
mentioned in the record update), we graciously handle the situation in
which the constructors themselves are not in scope. In that case,
instead of looking up the constructors in the GlobalRdrEnv, directly
look up their GREInfo using the lookupGREInfo function.
Fixes #26391
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a2d9d7c2 by sheaf at 2025-09-17T19:34:09-04:00
Improve Notes about disambiguating record updates
This commit updates the notes [Disambiguating record updates] and
[Type-directed record disambiguation], in particular adding more
information about the deprecation status of type-directed disambiguation
of record updates.
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de44e69e by sheaf at 2025-09-19T05:16:51-04:00
Enable TcM plugins in initTc
This commit ensures that we run typechecker plugins and defaulting
plugins whenever we call initTc.
In particular, this ensures that the pattern-match checker, which calls
'initTcDsForSolver' which calls 'initTc', runs with typechecker plugins
enabled. This matters for situations like:
merge :: Vec n a -> Vec n a -> Vec (2 * n) a
merge Nil Nil = Nil
merge (a <: as) (b <: bs) = a :< (b <: merge as bs)
in which we need the typechecker plugin to run in order to tell us that
the Givens would be inconsistent in the additional equation
merge (_ <: _) Nil
and thus that the equation is not needed.
Fixes #26395
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2c378ad2 by Cheng Shao at 2025-09-19T05:17:33-04:00
rel-eng: update fedora image to 42
This patch is a part of #25876 and updates fedora image to 42.
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0a9d9ffc by Sylvain Henry at 2025-09-19T13:12:14-04:00
Fix output of T14999 (#23685)
Fix output of T14999 to:
- take into account the +1 offset to DW_AT_low_pc (see Note [Info Offset])
- always use Intel's syntax to force consistency: it was reported that
sometimes GDB prints `jmpq` instead of `jmp` with the AT&T syntax
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1480872a by Vladislav Zavialov at 2025-09-19T13:12:54-04:00
Fix PREP_MAYBE_LIBRARY in prep_target_file.m4
This change fixes a configure error introduced in:
commit 8235dd8c4945db9cb03e3be3c388d729d576ed1e
ghc-toolchain: Move UseLibdw to per-Target file
Now the build no longer fails with:
acghc-toolchain: Failed to read a valid Target value from hadrian/cfg/default.target
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d1d9e39e by Ben Gamari at 2025-09-19T18:24:52-04:00
StgToByteCode: Don't assume that data con workers are nullary
Previously StgToByteCode assumed that all data-con workers were of a
nullary representation. This is not a valid assumption, as seen
in #23210, where an unsaturated application of a unary data
constructor's worker resulted in invalid bytecode. Sadly, I have not yet
been able to reduce a minimal testcase for this.
Fixes #23210.
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3eeecd50 by Ben Gamari at 2025-09-19T18:24:53-04:00
testsuite: Mark T23146* as unbroken
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2e73f342 by sheaf at 2025-09-19T18:24:53-04:00
Add test for #26216
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c2efb912 by Sven Tennie at 2025-09-19T18:25:36-04:00
Generate correct test header
This increases convenience when copying & pasting...
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d2fb811e by Sven Tennie at 2025-09-19T18:25:36-04:00
foundation test: Fix shift amount (#26248)
Shift primops' results are only defined for shift amounts of 0 to word
size - 1. The approach is similar to testing div-like operations (which
have a constraint regarding zero operands.)
This was partly vibe coded (https://github.com/supersven/ghc/pull/1) but
then heavily refactored.
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a62ce115 by Andreas Klebinger at 2025-09-19T18:26:18-04:00
Tweak jspace test
I've given it a longer timeout, and tweaked the test file generation
to speed it up a bit. Hopefully that is enough to make it constentily pass.
Last but not least it now also always uses three threads.
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0f034942 by Cheng Shao at 2025-09-19T18:26:59-04:00
rts: remove obsolete CC_SUPPORTS_TLS logic
This patch removes obsolete CC_SUPPORTS_TLS logic throughout the rts,
given __thread is now uniformly supported by C toolchains of all
platforms we currently support.
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ef705655 by Cheng Shao at 2025-09-19T18:27:41-04:00
rts: remove obsolete HAS_VISIBILITY_HIDDEN logic
This patch removes obsolete HAS_VISIBILITY_HIDDEN logic throughout the
rts, given __attribute__((visibility("hidden"))) is uniformly
supported by C toolchains of all platforms we currently support.
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9fdc1f7d by Cheng Shao at 2025-09-19T18:28:21-04:00
rts: remove -O3 pragma hack in Hash.c
This patch removes an obsolete gcc pragma to specify -O3 in Hash.c.
Hadrian already passes the right flag.
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b8cfa8f7 by Cheng Shao at 2025-09-19T18:29:01-04:00
rts: remove obsolete COMPILING_WINDOWS_DLL logic
This patch removes obsolete COMPILING_WINDOWS_DLL logic throughout the
rts. They were once used for compiling to win32 DLLs, but we haven't
been able to compile Haskell units to win32 DLLs for many years now,
due to PE format's restriction of no more than 65536 exported symbols
in a single DLL.
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bb760611 by Cheng Shao at 2025-09-19T18:29:42-04:00
wasm: bump browser_wasi_shim to 0.4.2
This patch bumps the browser_wasi_shim dependency of wasm dyld script
to 0.4.2.
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8b0940db by Cheng Shao at 2025-09-20T06:48:05-04:00
compiler: move Binary instance of Map to GHC.Utils.Binary
This patch moves `Binary` instance of `Map` from `haddock-api` to
`GHC.Utils.Binary`. This also allows us to remove a redundant instance
defined for `NameEntityInfo`, which is a type synonym for `Map`.
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4a8fed75 by Vladislav Zavialov at 2025-09-20T06:48:47-04:00
Fix keyword in ExplicitNamespaces error message (#26418)
Consider this module header and the resulting error:
{-# LANGUAGE NoExplicitNamespaces #-}
module T26418 (data HeadC) where
-- error: [GHC-47007]
-- Illegal keyword 'type'
Previously, the error message would mention 'type' (as shown above),
even though the user wrote 'data'. This has now been fixed.
The error location has also been corrected: it is now reported at the
keyword position rather than at the position of the associated
import/export item.
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867c2675 by Cheng Shao at 2025-09-20T06:49:28-04:00
wasm: fix dyld handling for forward declared GOT.func items
This patch fixes wasm shared linker's handling of forward declared
GOT.func items, see linked issue for details. Also adds T26430 test to
witness the fix. Fixes #26430.
Co-authored-by: Codex <codex(a)openai.com>
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e7df6cc0 by Simon Peyton Jones at 2025-09-23T14:34:39-04:00
Improve pretty printer for HsExpr
Given a very deeply-nested application, it just kept printing
deeper and deeper. This small change makes it cut off.
Test is in #26330, but we also get a dramatic decrease in compile
time for perf/compiler/InstanceMatching:
InstanceMatching 4,086,884,584 1,181,767,232 -71.1% GOOD
Why? Because before we got a GIGANTIC error message that took
ages to pretty-print; now we get this much more civilised message
(I have removed some whitespace.)
Match.hs:1007:1: error:
• No instance for ‘Show (F001 a)’ arising from a use of ‘showsPrec’
• In the second argument of ‘showString’, namely
‘(showsPrec
11 b1
(GHC.Internal.Show.showSpace
(showsPrec
11 b2
(GHC.Internal.Show.showSpace
(showsPrec
11 b3
(GHC.Internal.Show.showSpace
(showsPrec
11 b4
(GHC.Internal.Show.showSpace
(showsPrec
11 b5
(GHC.Internal.Show.showSpace
(showsPrec
11 b6
(GHC.Internal.Show.showSpace (showsPrec ...)))))))))))))’
-----------------------
The main payload is
* At the start of `pprExpr`
* In the defn of `pprApp`
A little bit of refactoring:
* It turned out that we were setting the default cut-off depth to a
fixed value in two places, so changing one didn't change the other.
See defaultSDocDepth and defaultSDocCols
* I refactored `pprDeeperList` a bit so I could understand it better.
Because the depth calculation has changed, there are lots of small
error message wibbles.
Metric Decrease:
InstanceMatching
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209f0158 by Simon Peyton Jones at 2025-09-23T14:34:39-04:00
Use Outputable.ellipsis rather than text "..."
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64bb0e37 by Sylvain Henry at 2025-09-23T14:35:56-04:00
deriveConstants: automatically pass -fcommon CC flag (#26393)
By mistake we tried to use deriveConstants without passing
`--gcc-flag -fcommon` (which Hadrian does) and it failed.
This patch:
1. adds parsing support for constants stored in the .bss section (i.e.
when -fcommon isn't passed)
2. enables passing `-fcommon` automatically to the C compiler because
Windows requires this for subtle reasons
3. Documents the subtle reasons
(1) isn't strictly necessary because we always do (2) but it does no
harm and it is still useful if the CC flags ever contain -fno-common
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afcdf92f by Oleg Grenrus at 2025-09-23T14:36:41-04:00
Don't wrap spaces in <span>s
Doing similar comparison as in 63189b2ceca07edf4e179f4180ca60d470c62cb3
With this change the gzipped documentation is now 2% smaller (previously 1%)
12_694_206 Agda-2.9.0-docs-orig.tar.gz
12_436_829 Agda-2.9.0-docs.tar.gz
Unzipped docs are 5% smaller (previously 3%)
178M Agda-2.9.0-docs-orig
169M Agda-2.9.0-docs
Individual hyperlinked sources are around 7-10% smaller (previously 5%)
(`Parser` module is generated by happy and has relatively little whitespace)
14_230_117 Agda.Syntax.Parser.Parser.html
13_220_758 Agda.Syntax.Parser.Parser.html
Agda's hyperlinked sources are 9% smaller now:
121M Agda-2.9.0-docs-orig/src
110M Agda-2.9.0-docs/src
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67de53a6 by Cheng Shao at 2025-09-23T14:37:31-04:00
rts: remove obsolete __GNUC__ related logic
This patch removes obsolete `__GNUC__` related logic, given on any
currently supported platform and toolchain, `__GNUC__ >= 4` is
universally true. Also pulls some other weeds and most notably, use
`__builtin___clear_cache` for clang as well, since clang has supported
this gcc intrinsic since 2014, see
https://github.com/llvm/llvm-project/commit/c491a8d4577052bc6b3b4c72a7db6a7….
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c4d32493 by Sven Tennie at 2025-09-23T20:40:57-04:00
RV64: Fix: Add missing truncation to MO_S_Shr (#26248)
Sub-double word (<W64) registers need to be truncated after the
operation.
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41dce477 by Sven Tennie at 2025-09-23T20:40:57-04:00
RV64: Cleanup shift emitting cases/code
Remove overlapping cases to make the shift logic easier to understand.
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0a601c30 by Alex Washburn at 2025-09-23T20:41:41-04:00
Correcting LLVM linking of Intel BMI intrinsics pdep{8,16} and pext{8,16}.
This patch fixes #26065.
The LLVM interface does not expose bindings to:
- llvm.x86.bmi.pdep.8
- llvm.x86.bmi.pdep.16
- llvm.x86.bmi.pext.8
- llvm.x86.bmi.pext.16
So calls are instead made to llvm.x86.bmi.{pdep,pext}.32 in these cases,
with pre/post-operation truncation to constrain the logical value range.
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89e8ff3d by Peng Fan at 2025-09-23T20:42:37-04:00
NCG/LA64: Implement MO_BSwap and MO_BRev with bit-manipulation Instructions
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50f6be09 by Sylvain Henry at 2025-09-23T20:43:29-04:00
Allow Core plugins to access unoptimized Core (#23337)
Make the first simple optimization pass after desugaring a real CoreToDo
pass. This allows CorePlugins to decide whether they want to be executed
before or after this pass.
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30ef0aac by Simon Hengel at 2025-09-23T20:44:12-04:00
docs: Fix typo in scoped_type_variables.rst
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f8919262 by Cheng Shao at 2025-09-23T20:44:54-04:00
ghci: fix bootstrapping with 9.12.3-rc1 and above
This patch fixes bootstrapping GHC with 9.12.3-rc1 and above. ghci
defines `Binary` instance for `HalfWord` in `ghc-heap`, which is a
proper `newtype` in 9.14 and starting from 9.12.3. Given we don't
build `ghc-heap` in stage0, we need to fix this predicate so that it
corresponds to the boot ghc versions that contain the right version of
`ghc-heap`.
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a7f15858 by sheaf at 2025-09-24T09:49:53-04:00
User's guide: clarify optimisation of INLINABLE unfoldings
This updates the user's guide section on INLINABLE pragmas to explain how
the unfoldings of inlineable functions are optimised. The user's guide incorrectly
stated that the RHS was not optimised at all, but this is not true. Instead, GHC
is careful about phase control to optmise the RHS while retaining the guarantee
that GHC behaves as if the original RHS had been written.
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495886d9 by Rodrigo Mesquita at 2025-09-24T09:50:35-04:00
cleanup: Delete historical artifact of COMPILING_WINDOWS_DLL
Namely, drop the obsolete
- DLL_IMPORT_RTS
- DLL_IMPORT_DATA_VAR
- DLL_IMPORT_DATA_VARNAME
- DLL_IMPORT_DATA_REF
These macros were not doing anything and placed inconsistently
Looking at the git logs reveal these macros were used to support
dynamic libraries on Win32, a feature that was dropped
in b8cfa8f741729ef123569fb321c4b2ab4a1a941c
This allows us to get rid of the rts/DLL.h file too.
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5ae89054 by Sylvain Henry at 2025-09-24T17:07:00-04:00
Allow disabling builtin rules (#20298)
Add a way to disable built-in rules programmatically and with a debug flag.
I also took the opportunity to add a debug flag to disable bignum rules,
which was only possible programmatically (e.g. in a plugin).
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135242ca by Rodrigo Mesquita at 2025-09-24T17:07:44-04:00
Don't use build CFLAGS and friends as target settings
In the GHC in tree configure, `CFLAGS`, `CXXFLAGS`, and similar tool
configuration flags apply to the BUILD phase of the compiler, i.e. to
the tools run to compile GHC itself.
Notably, they should /not/ be carried over to the Target settings, i.e.
these flags should /not/ apply to the tool which GHC invokes at runtime.
Fixes #25637
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b418408b by Irene Knapp at 2025-09-25T09:47:54-04:00
Document etymology of "bind" as the name for `>>=`
It took me twenty years of contemplation to realize why it's called that.
I therefore feel that it may not be obvious to beginners.
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e9c5e46f by Brandon Chinn at 2025-09-25T09:48:36-04:00
Fix tabs in string gaps (#26415)
Tabs in string gaps were broken in bb030d0d because previously, string gaps were manually parsed, but now it's lexed by the usual Alex grammar and post-processed after successful lexing.
It broke because of a discrepancy between GHC's lexer grammar and the Haskell Report. The Haskell Report includes tabs in whitechar:
whitechar → newline | vertab | space | tab | uniWhite
$whitechar used to include tabs until 18 years ago, when it was removed in order to exclude tabs from $white_no_nl in order to warn on tabs: 6e202120. In this MR, I'm adding \t back into $whitechar, and explicitly excluding \t from the $white_no_nl+ rule ignoring all whitespace in source code, which more accurately colocates the "ignore all whitespace except tabs, which is handled in the next line" logic.
As a side effect of this MR, tabs are now allowed in pragmas; currently, a pragma written as {-# \t LANGUAGE ... #-} is interpreted as the tab character being the pragma name, and GHC warns "Unrecognized pragma". With this change, tabs are ignored as whitespace, which more closely matches the Report anyway.
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8bf5b309 by Cheng Shao at 2025-09-25T09:49:18-04:00
wasm: remove the --no-turbo-fast-api-calls hack from dynamic linker shebang
This patch removes the `--no-turbo-fast-api-calls` hack from the dyld
script shebang; it was used to workaround v8 fast call coredumps in
nodejs and no longer needed, and comes with a performance penalty,
hence the removal.
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c1cab0c3 by Sylvain Henry at 2025-09-26T10:36:30-04:00
Revert "Add necessary flag for js linking"
This reverts commit 84f68e2231b2eddb2e1dc4e90af394ef0f2e803f.
This commit didn't have the expected effect. See discussion in #26290.
Instead we export HEAP8 and HEAPU8 from rts/js/mem.js
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0a434a80 by Sylvain Henry at 2025-09-26T10:36:30-04:00
JS: export HEAPU8 (#26290)
This is now required by newer Emscripten versions.
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b10296a9 by Andreas Klebinger at 2025-09-26T10:37:11-04:00
sizeExpr: Improve Tick handling.
When determining if we scrutinize a function argument we
now properly look through ticks. Fixes #26444.
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d9e2a9a7 by mniip at 2025-09-26T16:00:50-04:00
rts: Refactor parsing of -h flags
We have a nontrivial amount of heap profiling flags available in the
non-profiled runtime, so it makes sense to reuse the parsing code
between the profiled and the non-profiled runtime, only restricting
which flags are allowed.
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089e45aa by mniip at 2025-09-26T16:00:50-04:00
rts: Fix parsing of -h options with braces
When the "filter by" -h options were introduced in
bc210f7d267e8351ccb66972f4b3a650eb9338bb, the braces were mandatory.
Then in 3c22fb21fb18e27ce8d941069a6915fce584a526, the braces were made
optional. Then in d1ce35d2271ac8b79cb5e37677b1a989749e611c the brace
syntax stopped working, and no one seems to have noticed.
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423f1472 by mniip at 2025-09-26T16:00:50-04:00
rts: add -hT<type> and -hi<table id> heap filtering options (#26361)
They are available in non-profiled builds.
Along the way fixed a bug where combining -he<era> and -hr<retainer>
would ignore whether the retainer matches or not.
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4cda4785 by mniip at 2025-09-26T16:00:50-04:00
docs: Document -hT<type> and -hi<addr>
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982ad30f by mniip at 2025-09-26T16:00:50-04:00
rts: Refactor dumping the heap census
Always do the printing of the total size right next to where the bucket
label is printed. This prevents accidentally printing a label without
the corresponding amount.
Fixed a bug where exactly this happened for -hi profile and the 0x0
(uncategorized) info table.
There is now also much more symmetry between fprintf(hp_file,...) and
the corresponding traceHeapProfSampleString.
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8cbe006a by Cheng Shao at 2025-09-26T16:01:34-04:00
hadrian: fix GHC.Platform.Host generation for cross stage1
This patch fixes incorrectly GHC.Platform.Host generation logic for
cross stage1 in hadrian (#26449). Also adds T26449 test case to
witness the fix.
Co-authored-by: Codex <codex(a)openai.com>
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0ddd0fdc by soulomoon at 2025-09-28T19:24:10-04:00
Remove hptAllInstances usage during upsweep
Previously, during the upsweep phase when
checking safe imports, we were loading the module
interface with runTcInteractive, which in turn calls
hptAllInstances. This accesses non-below modules
from the home package table.
Change the implementation of checkSafeImports
to use initTcWithGbl and loadSysInterface to load the
module interface, since we already have TcGblEnv at hand.
This eliminates the unnecessary use of runTcInteractive
and hptAllInstances during the upsweep phase.
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e05c496c by Ben Gamari at 2025-09-28T19:24:59-04:00
base: Update changelog to reflect timing of IOPort# removal
This change will make 9.14 afterall.
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bdc9d130 by Cheng Shao at 2025-09-28T19:25:45-04:00
rts: fix wasm JSFFI initialization constructor code
This commit fixes wasm JSFFI initialization constructor code so that
the constructor is self-contained and avoids invoking a fake
__main_argc_argv function. The previous approach of reusing
__main_void logic in wasi-libc saves a tiny bit of code, at the
expense of link-time trouble whenever GHC links a wasm module without
-no-hs-main, in which case the driver-generated main function would
clash with the definition here, resulting in a linker error. It's
simply better to avoid messing with the main function, and it would
additionally allow linking wasm32-wasi command modules that does make
use of synchronous JSFFI.
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5d59fc8f by Cheng Shao at 2025-09-28T19:26:27-04:00
rts: provide stub implementations of ExecPage functions for wasm
This patch provides stub implementations of ExecPage functions for
wasm. They are never actually invoked at runtime for any non-TNTC
platform, yet they can cause link-time errors of missing symbols when
the GHCi.InfoTable module gets linked into the final wasm module (e.g.
a GHC API program).
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a4d664c7 by Cheng Shao at 2025-09-29T17:29:22+02:00
compiler/ghci: replace the LoadDLL message with LoadDLLs
As a part of #25407, this commit changes the LoadDLL message to
LoadDLLs, which takes a list of DLL paths to load and returns the list
of remote pointer handles. The wasm dyld is refactored to take
advantage of LoadDLLs and harvest background parallelism. On other
platforms, LoadDLLs is based on a fallback codepath that does
sequential loading.
The driver is not actually emitting singular LoadDLLs message with
multiple DLLs yet, this is left in subsequent commits.
Co-authored-by: Codex <codex(a)openai.com>
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c7fc4bae by Cheng Shao at 2025-09-29T17:29:22+02:00
driver: separate downsweep/upsweep phase in loadPackages'
This commit refactors GHC.Linker.Loader.loadPackages' to be separated
into downsweep/upsweep phases:
- The downsweep phase performs dependency analysis and generates a
list of topologically sorted packages to load
- The upsweep phase sequentially loads these packages by calling
loadPackage
This is a necessary refactoring to make it possible to make loading of
DLLs concurrent.
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ab180104 by Cheng Shao at 2025-09-29T17:57:19+02:00
driver: emit single LoadDLLs message to load multiple DLLs
This commit refactors the driver so that it emits a single LoadDLLs
message to load multiple DLLs in GHC.Linker.Loader.loadPackages'.
Closes #25407.
-------------------------
Metric Increase:
MultiLayerModulesTH_OneShot
TcPlugin_RewritePerf
-------------------------
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
9c304ec0 by Sean D. Gillespie at 2025-09-29T19:57:07-04:00
Fix SIZED_BIN_OP_TY_INT casts in RTS interpreter
Correct `SIZED_BIN_OP_TY_INT` cast to integer. Previously, it cast
its second operand as its parameter `ty`. This does not currently
cause any issues, since we are only using it for bit shifts.
Fixes #26287
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a1de535f by Luite Stegeman at 2025-09-30T18:40:28-04:00
rts: Fix lost wakeups in threadPaused for threads blocked on black holes
The lazy blackholing code in threadPaused could overwrite closures
that were already eagerly blackholed, and as such wouldn't have a
marked update frame. If the black hole was overwritten by its
original owner, this would lead to an undetected collision, and
the contents of any existing blocking queue being lost.
This adds a check for eagerly blackholed closures and avoids
overwriting their contents.
Fixes #26324
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b7e21e49 by Luite Stegeman at 2025-09-30T18:40:28-04:00
rts: push the correct update frame in stg_AP_STACK
The frame contains an eager black hole (__stg_EAGER_BLACKHOLE_info) so
we should push an stg_bh_upd_frame_info instead of an stg_upd_frame_info.
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02a7c18a by Cheng Shao at 2025-09-30T18:41:27-04:00
ghci: fix lookupSymbolInDLL behavior on wasm
This patch fixes lookupSymbolInDLL behavior on wasm to return Nothing
instead of throwing. On wasm, we only have lookupSymbol, and the
driver would attempt to call lookupSymbolInDLL first before falling
back to lookupSymbol, so lookupSymbolInDLL needs to return Nothing
gracefully for the fallback behavior to work.
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aa0ca5e3 by Cheng Shao at 2025-09-30T18:41:27-04:00
hadrian/compiler: enable internal-interpreter for ghc library in wasm stage1
This commit enables the internal-interpreter flag for ghc library in
wasm stage1, as well as other minor adjustments to make it actually
possible to launch a ghc api session that makes use of the internal
interpreter. Closes #26431 #25400.
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69503668 by Cheng Shao at 2025-09-30T18:41:27-04:00
testsuite: add T26431 test case
This commit adds T26431 to testsuite/tests/ghci-wasm which goes
through the complete bytecode compilation/linking/running pipeline in
wasm, so to witness that the ghc shared library in wasm have full
support for internal-interpreter.
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e9445c01 by Matthew Pickering at 2025-09-30T18:42:23-04:00
driver: Load bytecode static pointer entries during linking
Previously the entries were loaded too eagerly, during upsweep, but we
should delay loading them until we know that the relevant bytecode
object is demanded.
Towards #25230
- - - - -
b8307eab by Cheng Shao at 2025-09-30T18:43:14-04:00
autoconf/ghc-toolchain: remove obsolete C99 check
This patch removes obsolete c99 check from autoconf/ghc-toolchain. For
all toolchain & platform combination we support, gnu11 or above is
already supported without any -std flag required, and our RTS already
required C11 quite a few years ago, so the C99 check is completely
pointless.
- - - - -
9c293544 by Simon Peyton Jones at 2025-10-01T09:36:10+01:00
Fix buglet in GHC.Core.Unify.uVarOrFam
We were failing to match two totally-equal types!
This led to #26457.
- - - - -
554487a7 by Rodrigo Mesquita at 2025-10-01T23:04:43-04:00
cleanup: Drop obsolete comment about HsConDetails
HsConDetails used to have an argument representing the type of the
tyargs in a list:
data HsConDetails tyarg arg rec
= PrefixCon [tyarg] [arg]
This datatype was shared across 3 synonyms: HsConPatDetails,
HsConDeclH98Details, HsPatSynDetails. In the latter two cases, `tyarg`
was instanced to `Void` meaning the list was always empty for these
cases.
In 7b84c58867edca57a45945a20a9391724db6d9e4, this was refactored such
that HsConDetails no longer needs a type of tyargs by construction. The
first case now represents the type arguments in the args type itself,
with something like:
ConPat "MkE" [InvisP tp1, InvisP tp2, p1, p2]
So the deleted comment really is just obsolete.
Fixes #26461
- - - - -
6992ac09 by Cheng Shao at 2025-10-02T07:27:55-04:00
testsuite: remove unused expected output files
This patch removes unused expected output files in the testsuites on
platforms that we no longer support.
- - - - -
39eaaaba by Ben Gamari at 2025-10-02T07:28:45-04:00
rts: Dynamically initialize built-in closures
To resolve #26166 we need to eliminate references to undefined symbols
in the runtime system. One such source of these is the runtime's
static references to `I#` and `C#` due the `stg_INTLIKE` and
`stg_CHARLIKE` arrays.
To avoid this we make these dynamic, initializing them during RTS
start-up.
- - - - -
c254c54b by Cheng Shao at 2025-10-02T07:29:33-04:00
compiler: only invoke keepCAFsForGHCi if internal-interpreter is enabled
This patch makes the ghc library only invoke keepCAFsForGHCi if
internal-interpreter is enabled. For cases when it's not (e.g. the
host build of a cross ghc), this avoids unnecessarily retaining all
CAFs in the heap. Also fixes the type signature of c_keepCAFsForGHCi
to match the C ABI.
- - - - -
c9ec4d43 by Simon Hengel at 2025-10-02T18:42:20-04:00
Update copyright in documentation
- - - - -
da9633a9 by Matthew Pickering at 2025-10-02T18:43:04-04:00
loader: Unify loadDecls and loadModuleLinkables functions
These two functions nearly did the same thing. I have refactored them so
that `loadDecls` now calls `loadModuleLinkables`.
Fixes #26459
- - - - -
5db98d80 by Simon Hengel at 2025-10-02T18:43:53-04:00
Fix typo
- - - - -
1275d360 by Matthew Pickering at 2025-10-03T06:05:56-04:00
testsuite: Use ghci_ways to set ways in PackedDataCon/UnboxedTuples/UnliftedDataTypeInterp tests
These tests reimplemented the logic from `valid_way` in order to
determine what ways to run. It's easier to use this combination of
`only_ways` and `extra_ways` to only run in GHCi ways and always run in
GHCi ways.
- - - - -
c06b534b by Matthew Pickering at 2025-10-03T06:06:40-04:00
Rename interpreterBackend to bytecodeBackend
This is preparation for creating bytecode files.
The "interpreter" is one way in which we can run bytecode objects. It is
more accurate to describe that the backend produces bytecode, rather
than the means by which the code will eventually run.
The "interpreterBackend" binding is left as a deprecated alias.
- - - - -
41bdb16f by Andreas Klebinger at 2025-10-06T18:04:34-04:00
Add a perf test for #26425
- - - - -
1da0c700 by Andreas Klebinger at 2025-10-06T18:05:14-04:00
Testsuite: Silence warnings about Wx-partial in concprog001
- - - - -
7471eb6a by sheaf at 2025-10-07T21:39:43-04:00
Improve how we detect user type errors in types
This commit cleans up all the code responsible for detecting whether a
type contains "TypeError msg" applications nested inside it. All the
logic is now in 'userTypeError_maybe', which is always deep. Whether
it looks inside type family applications is determined by the passed-in
boolean flag:
- When deciding whether a constraint is definitely insoluble, don't
look inside type family applications, as they may still reduce -- in
which case the TypeError could disappear.
- When reporting unsolved constraints, look inside type family
applications: they had the chance to reduce but didn't, and the
custom type error might contain valuable information.
All the details are explained in Note [Custom type errors in constraints]
in GHC.Tc.Types.Constraint.
Another benefit of this change is that it allows us to get rid of the
deeply dodgy 'getUserTypeErrorMsg' function.
This commit also improves the detection of custom type errors, for
example in equality constraints:
TypeError blah ~# rhs
It used to be the case that we didn't detect the TypeError on the LHS,
because we never considered that equality constraints could be insoluble
due to the presence of custom type errors. Addressing this oversight
improves detection of redundant pattern match warnings, fixing #26400.
- - - - -
29955267 by Rodrigo Mesquita at 2025-10-07T21:40:25-04:00
cleanup: Drop obsolete settings from config.mk.in
These values used to be spliced into the bindist's `config.mk` s.t. when
`make` was run, the values were read and written into the bindist installation `settings` file.
However, we now carry these values to the bindist directly in the
default.target toolchain file, and `make` writes almost nothing to
`settings` now (see #26227)
The entries deleted in this MR were already unused.
Fixes #26478
- - - - -
f7adfed2 by ARATA Mizuki at 2025-10-08T08:37:24-04:00
T22033 is only relevant if the word size is 64-bit
Fixes #25497
- - - - -
ff1650c9 by Ben Gamari at 2025-10-08T08:38:07-04:00
rts/posix: Enforce iteration limit on heap reservation logic
Previously we could loop indefinitely when attempting to get an address
space reservation for our heap. Limit the logic to 8 iterations to
ensure we instead issue a reasonable error message.
Addresses #26151.
- - - - -
01844557 by Ben Gamari at 2025-10-08T08:38:07-04:00
rts/posix: Hold on to low reservations when reserving heap
Previously when the OS gave us an address space reservation in low
memory we would immediately release it and try again. However, on some
platforms this meant that we would get the same allocation again in the
next iteration (since mmap's `hint` argument is just that, a hint).
Instead we now hold on to low reservations until we have found a
suitable heap reservation.
Fixes #26151.
- - - - -
b2c8d052 by Sven Tennie at 2025-10-08T08:38:47-04:00
Build terminfo only in upper stages in cross-builds (#26288)
Currently, there's no way to provide library paths for [n]curses for
both - build and target - in cross-builds. As stage0 is only used to
build upper stages, it should be fine to build terminfo only for them.
This re-enables building cross-compilers with terminfo.
- - - - -
c58f9a61 by Julian Ospald at 2025-10-08T08:39:36-04:00
ghc-toolchain: Drop `ld.gold` from merge object command
It's deprecated.
Also see #25716
- - - - -
2b8baada by sheaf at 2025-10-08T18:23:37-04:00
Improvements to 'mayLookIdentical'
This commit makes significant improvements to the machinery that decides
when we should pretty-print the "invisible bits" of a type, such as:
- kind applications, e.g. '@k' in 'Proxy @k ty'
- RuntimeReps, e.g. 'TYPE r'
- multiplicities and linear arrows 'a %1 -> b'
To do this, this commit refactors 'mayLookIdentical' to return **which**
of the invisible bits don't match up, e.g. in
(a %1 -> b) ~ (a %Many -> b)
we find that the invisible bit that doesn't match up is a multiplicity,
so we should set 'sdocLinearTypes = True' when pretty-printing, and with
e.g.
Proxy @k1 ~ Proxy @k2
we find that the invisible bit that doesn't match up is an invisible
TyCon argument, so we set 'sdocPrintExplicitKinds = True'.
We leverage these changes to remove the ad-hoc treatment of linearity
of data constructors with 'dataConDisplayType' and 'dataConNonLinearType'.
This is now handled by the machinery of 'pprWithInvisibleBits'.
Fixes #26335 #26340
- - - - -
129ce32d by sheaf at 2025-10-08T18:23:37-04:00
Store SDoc context in SourceError
This commits modifies the SourceError datatype which is used for
throwing and then reporting exceptions by storing all the info we need
to be able to print the SDoc, including whether we should print with
explicit kinds, explicit runtime-reps, etc.
This is done using the new datatype:
data SourceErrorContext
= SEC
!DiagOpts
!(DiagnosticOpts GhcMessage)
Now, when we come to report an error (by handling the exception), we
have access to the full context we need.
Fixes #26387
- - - - -
f9790ca8 by Ben Gamari at 2025-10-08T18:24:19-04:00
gitlab-ci: Make RELEASE_JOB an input
Rather than an undocumented variable.
- - - - -
14281a22 by Ben Gamari at 2025-10-11T14:06:47-04:00
rts/nonmoving: Fix comment spelling
- - - - -
bedd38b0 by Ben Gamari at 2025-10-11T14:06:47-04:00
rts/nonmoving: Use atomic operations to update bd->flags
- - - - -
215d6841 by Ben Gamari at 2025-10-11T14:06:47-04:00
nonmoving: Use get_itbl instead of explicit loads
This is cleaner and also fixes unnecessary (and unsound) use of
`volatile`.
- - - - -
2c94aa3a by Ben Gamari at 2025-10-11T14:06:47-04:00
rts/Scav: Handle WHITEHOLEs in scavenge_one
`scavenge_one`, used to scavenge mutable list entries, may encounter
`WHITEHOLE`s when the non-moving GC is in use via two paths:
1. when an MVAR is being marked concurrently
2. when the object belongs to a chain of selectors being short-cutted.
Fixes #26204.
- - - - -
6bd8155c by Matthew Pickering at 2025-10-11T14:07:29-04:00
Add support for generating bytecode objects
This commit adds the `-fwrite-byte-code` option which makes GHC emit a
`.gbc` file which contains a serialised representation of bytecode.
The bytecode can be loaded by the compiler to avoid having to
reinterpret a module when using the bytecode interpreter (for example,
in GHCi).
There are also the new options:
* -gbcdir=<DIR>: Specify the directory to place the gbc files
* -gbcsuf=<suffix>: Specify the suffix for gbc files
The option `-fbyte-code-and-object-code` now implies
`-fwrite-byte-code`.
These performance tests fail due to https://github.com/haskell/directory/issues/204
-------------------------
Metric Increase:
MultiComponentModules
MultiLayerModules
MultiComponentModulesRecomp
MultiLayerModulesRecomp
MultiLayerModulesTH_Make
MultiLayerModulesTH_OneShot
T13701
-------------------------
The bytecode serialisation part was implemented by Cheng Shao
Co-authored-by: Cheng Shao <terrorjack(a)type.dance>
- - - - -
dc8f9599 by Matthew Pickering at 2025-10-11T14:07:30-04:00
Revert "Add a perf test for #26425"
This test has a large memory spike currently, which makes the test
sensitive, since if you allocate a little more or less, the precise
location where GC happens shifts and you observe a different part of the
spike.
Andreas told me to revert the patch for now, and he will add it back
when he fixes the memory spike.
This reverts commit 41bdb16fd083110a06507248f648c507a2feb4af.
- - - - -
e10dcd65 by Sven Tennie at 2025-10-12T10:24:56+00:00
T22859: Increase threadDelay for small machines
The previously used thread delay led to failures on my RISC-V test
setups.
- - - - -
d59ef6b6 by Hai / @BestYeen at 2025-10-14T21:51:14-04:00
Change Alex and Happy m4 scripts to display which version was found in the system, adapt small formatting details in Happy script to be more like the Alex script again.
- - - - -
c98abb6a by Hai / @BestYeen at 2025-10-14T21:52:08-04:00
Update occurrences of return to pure and add a sample for redefining :m to mean :main
- - - - -
70ee825a by Cheng Shao at 2025-10-14T21:52:50-04:00
testsuite: fix T3586 for non-SSE3 platforms
`T3586.hs` contains `-fvia-C -optc-msse3` which I think is a
best-effort basis to harvest the C compiler's auto vectorization
optimizations via the C backend back when the test was added. The
`-fvia-C` part is now a deprecated no-op because GHC can't fall back
to the C backend on a non-unregisterised build, and `-optc-msse3`
might actually cause the test to fail on non x86/x64 platforms, e.g.
recent builds of wasi-sdk would report `wasm32-wasi-clang: error:
unsupported option '-msse3' for target 'wasm32-unknown-wasi'`.
So this patch cleans up this historical cruft. `-fvia-C` is removed,
and `-optc-msse3` is only passed when cpuid contains `pni` (which
indicates support of SSE3).
- - - - -
4be32153 by Teo Camarasu at 2025-10-15T08:06:09-04:00
Add submodules for template-haskell-lift and template-haskell-quasiquoter
These two new boot libraries expose stable subsets of the
template-haskell interface.
This is an implemenation of the GHC proposal https://github.com/ghc-proposals/ghc-proposals/pull/696
Work towards #25262
- - - - -
0c00c9c3 by Ben Gamari at 2025-10-15T08:06:51-04:00
rts: Eliminate uses of implicit constant arrays
Folding of `const`-sized variable-length arrays to a constant-length
array is a gnu extension which clang complains about.
Closes #26502.
- - - - -
bf902a1d by Fendor at 2025-10-15T16:00:59-04:00
Refactor distinct constructor tables map construction
Adds `GHC.Types.Unique.FM.alterUFM_L`, `GHC.Types.Unique.DFM.alterUDFM_L`
`GHC.Data.Word64Map.alterLookup` to support fusion of distinct
constructor data insertion and lookup during the construction of the `DataCon`
map in `GHC.Stg.Debug.numberDataCon`.
Co-authored-by: Fendor <fendor(a)posteo.de>
Co-authored-by: Finley McIlwaine <finleymcilwaine(a)gmail.com>
- - - - -
b3585ba1 by Fendor at 2025-10-15T16:00:59-04:00
Allow per constructor refinement of distinct-constructor-tables
Introduce `-fno-distinct-constructor-tables`. A distinct constructor table
configuration is built from the combination of flags given, in order. For
example, to only generate distinct constructor tables for a few specific
constructors and no others, just pass
`-fdistinct-constructor-tables-only=C1,...,CN`.
This flag can be supplied multiple times to extend the set of
constructors to generate a distinct info table for.
You can disable generation of distinct constructor tables for all
configurations by passing `-fno-distinct-constructor-tables`.
The various configurations of these flags is included in the `DynFlags`
fingerprints, which should result in the expected recompilation logic.
Adds a test that checks for distinct tables for various given or omitted
constructors.
Updates CountDepsAst and CountDepsParser tests to account for new dependencies.
Fixes #23703
Co-authored-by: Fendor <fendor(a)posteo.de>
Co-authored-by: Finley McIlwaine <finleymcilwaine(a)gmail.com>
- - - - -
e17dc695 by fendor at 2025-10-15T16:01:41-04:00
Fix typos in haddock documentation for stack annotation API
- - - - -
f85058d3 by Zubin Duggal at 2025-10-17T13:50:52+05:30
compiler: Attempt to systematize Unique tags by introducing an ADT for each different tag
Fixes #26264
Metric Decrease:
T9233
- - - - -
c85c845d by sheaf at 2025-10-17T22:35:32-04:00
Don't prematurely final-zonk PatSyn declarations
This commit makes GHC hold off on the final zonk for pattern synonym
declarations, in 'GHC.Tc.TyCl.PatSyn.tc_patsyn_finish'.
This accommodates the fact that pattern synonym declarations without a
type signature can contain unfilled metavariables, e.g. if the RHS of
the pattern synonym involves view-patterns whose type mentions promoted
(level 0) metavariables. Just like we do for ordinary function bindings,
we should allow these metavariables to be settled later, instead of
eagerly performing a final zonk-to-type.
Now, the final zonking-to-type for pattern synonyms is performed in
GHC.Tc.Module.zonkTcGblEnv.
Fixes #26465
- - - - -
ba3e5bdd by Rodrigo Mesquita at 2025-10-18T16:57:18-04:00
Move code-gen aux symbols from ghc-internal to rts
These symbols were all previously defined in ghc-internal and made the
dependency structure awkward, where the rts may refer to some of these
symbols and had to work around that circular dependency the way
described in #26166.
Moreover, the code generator will produce code that uses these symbols!
Therefore, they should be available in the rts:
PRINCIPLE: If the code generator may produce code which uses this
symbol, then it should be defined in the rts rather than, say,
ghc-internal.
That said, the main motivation is towards fixing #26166.
Towards #26166. Pre-requisite of !14892
- - - - -
f31de2a9 by Ben Gamari at 2025-10-18T16:57:18-04:00
rts: Avoid static symbol references to ghc-internal
This resolves #26166, a bug due to new constraints placed by Apple's
linker on undefined references.
One source of such references in the RTS is the many symbols referenced
in ghc-internal. To mitigate #26166, we make these references dynamic,
as described in Note [RTS/ghc-internal interface].
Fixes #26166
Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com>
Co-authored-by: Cheng Shao <terrorjack(a)type.dance>
- - - - -
43fdfddc by Ben Gamari at 2025-10-18T16:57:18-04:00
compiler: Rename isMathFun -> isLibcFun
This set includes more than just math functions.
- - - - -
4ed5138f by Ben Gamari at 2025-10-18T16:57:18-04:00
compiler: Add libc allocator functions to libc_funs
Prototypes for these are now visible from `Prim.h`, resulting in
multiple-declaration warnings in the unregisterised job.
- - - - -
9a0a076b by Ben Gamari at 2025-10-18T16:57:18-04:00
rts: Minimize header dependencies of Prim.h
Otherwise we will end up with redundant and incompatible declarations
resulting in warnings during the unregisterised build.
- - - - -
26b8a414 by Diego Antonio Rosario Palomino at 2025-10-18T16:58:10-04:00
Cmm Parser: Fix incorrect example in comment
The Parser.y file contains a comment with an incorrect example of textual
Cmm (used in .cmm files). This commit updates the comment to ensure it
reflects valid textual Cmm syntax.
Fixes #26313
- - - - -
d4a9d6d6 by ARATA Mizuki at 2025-10-19T18:43:47+09:00
Handle implications between x86 feature flags
This includes:
* Multiple -msse* options can be specified
* -mavx implies -msse4.2
* -mavx2 implies -mavx
* -mfma implies -mavx
* -mavx512f implies -mavx2 and -mfma
* -mavx512{cd,er,pf} imply -mavx512f
Closes #24989
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
c9b8465c by Cheng Shao at 2025-10-20T10:16:00-04:00
wasm: workaround WebKit bug in dyld
This patch works around a WebKit bug and allows dyld to run on WebKit
based platforms as well. See added note for detailed explanation.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
91b6be10 by Julian Ospald at 2025-10-20T18:21:03-04:00
Improve error handling in 'getPackageArchives'
When the library dirs in the package conf files are not set up correctly,
the JS linker will happily ignore such packages and not link against them,
although they're part of the link plan.
Fixes #26383
- - - - -
6c5269da by Sven Tennie at 2025-10-20T18:21:44-04:00
Align coding style
Improve readability by using the same style for all constructor calls in
this function.
- - - - -
3d305889 by Sven Tennie at 2025-10-20T18:21:44-04:00
Reduce complexity by removing joins with mempty
ldArgs, cArgs and cppArgs are all `mempty`. Thus concatenating them adds
nothing but some complexity while reading the code.
- - - - -
38d65187 by Matthew Pickering at 2025-10-21T13:12:20+01:00
Fix stack decoding when using profiled runtime
There are three fixes in this commit.
* We need to replicate the `InfoTable` and `InfoTableProf`
approach for the other stack constants (see the new Stack.ConstantsProf
file).
* Then we need to appropiately import the profiled or non-profiled
versions.
* Finally, there was an incorrect addition in `stackFrameSize`. We need
to cast after performing addition on words.
Fixes #26507
- - - - -
17231bfb by fendor at 2025-10-21T13:12:20+01:00
Add regression test for #26507
- - - - -
4f5bf93b by Simon Peyton Jones at 2025-10-25T04:05:34-04:00
Postscript to fix for #26255
This MR has comments only
- - - - -
6ef22fa0 by IC Rainbow at 2025-10-26T18:23:01-04:00
Add SIMD primops for bitwise logical operations
This adds 128-bit wide and/or/xor instructions for X86 NCG,
with both SSE and AVX encodings.
```
andFloatX4# :: FloatX4# -> FloatX4# -> FloatX4# -- andps / vandps
andDoubleX2# :: DoubleX2# -> DoubleX2# -> DoubleX2# -- andpd / vandpd
andInt8X16# :: Int8X16# -> Int8X16# -> Int8X16# -- pand / vpand
```
The new primops are available on ARM when using LLVM backend.
Tests added:
- simd015 (floats and doubles)
- simd016 (integers)
- simd017 (words)
Fixes #26417
- - - - -
fbdc623a by sheaf at 2025-10-26T18:23:52-04:00
Add hints for unsolved HasField constraints
This commit adds hints and explanations for unsolved 'HasField'
constraints.
GHC will now provide additional explanations for an unsolved constraint
of the form 'HasField fld_name rec_ty fld_ty'; the details are laid out in
Note [Error messages for unsolved HasField constraints], but briefly:
1. Provide similar name suggestions (e.g. mis-spelled field name)
and import suggestions (record field not in scope).
These result in actionable 'GhcHints', which is helpful to provide
code actions in HLS.
2. Explain why GHC did not solve the constraint, e.g.:
- 'fld_name' is not a string literal (e.g. a type variable)
- 'rec_ty' is a TyCon without any fields, e.g. 'Int' or 'Bool'.
- 'fld_ty' contains existentials variables or foralls.
- The record field is a pattern synonym field (GHC does not generate
HasField instances for those).
- 'HasField' is a custom 'TyCon', not actually the built-in
'HasField' typeclass from 'GHC.Records'.
On the way, we slightly refactor the mechanisms for import suggestions
in GHC.Rename.Unbound. This is to account for the fact that, for
'HasField', we don't care whether the field is imported qualified or
unqualified. 'importSuggestions' was refactored, we now have
'sameQualImportSuggestions' and 'anyQualImportSuggestions'.
Fixes #18776 #22382 #26480
- - - - -
99d5707f by sheaf at 2025-10-26T18:23:52-04:00
Rename PatSyn MatchContext to PatSynCtx to avoid punning
- - - - -
5dc2e9ea by Julian Ospald at 2025-10-27T18:17:23-04:00
Skip uniques test if sources are not available
- - - - -
544b9ec9 by Vladislav Zavialov at 2025-10-27T18:18:06-04:00
Re-export GHC.Hs.Basic from GHC.Hs
Clean up some import sections in GHC by re-exporting GHC.Hs.Basic
from GHC.Hs.
- - - - -
643ce801 by Julian Ospald at 2025-10-28T18:18:55-04:00
rts: remove unneccesary cabal flags
We perform those checks via proper autoconf macros
instead that do the right thing and then add those
libs to the rts buildinfo.
- - - - -
d69ea8fe by Vladislav Zavialov at 2025-10-28T18:19:37-04:00
Test case for #17705
Starting with GHC 9.12 (the first release to include 5745dbd3),
all examples in this ticket are handled as expected.
- - - - -
4038a28b by Andreas Klebinger at 2025-10-30T12:38:52-04:00
Add a perf test for #26425
- - - - -
f997618e by Andreas Klebinger at 2025-10-30T12:38:52-04:00
OccAnal: Be stricter for better compiler perf.
In particular we are now stricter:
* When combining usageDetails.
* When computing binder info.
In combineUsageDetails when combining the underlying adds we compute a
new `LocalOcc` for each entry by combining the two existing ones.
Rather than wait for those entries to be forced down the road we now
force them immediately. Speeding up T26425 by about 10% with little
effect on the common case.
We also force binders we put into the Core AST everywhere now.
Failure to do so risks leaking the occ env used to set the binders
OccInfo.
For T26425 compiler residency went down by a factor of ~10x.
Compile time also improved by a factor of ~1.6.
-------------------------
Metric Decrease:
T18698a
T26425
T9233
-------------------------
- - - - -
5618645b by Vladislav Zavialov at 2025-10-30T12:39:33-04:00
Fix namespace specifiers in subordinate exports (#12488)
This patch fixes an oversight in the `lookupChildrenExport` function that
caused explicit namespace specifiers of subordinate export items to be
ignored:
module M (T (type A)) where -- should be rejected
data T = A
Based on the `IEWrappedName` data type, there are 5 cases to consider:
1. Unadorned name: P(X)
2. Named default: P(default X)
3. Pattern synonym: P(pattern X)
4. Type name: P(type X)
5. Data name: P(data X)
Case 1 is already handled correctly; cases 2 and 3 are parse errors; and
it is cases 4 and 5 that we are concerned with in this patch.
Following the precedent established in `LookupExactName`, we introduce
a boolean flag in `LookupChildren` to control whether to look up in all
namespaces or in a specific one. If an export item is accompanied by an
explicit namespace specifier `type` or `data`, we restrict the lookup in
`lookupGRE` to a specific namespace.
The newly introduced diagnostic `TcRnExportedSubordinateNotFound`
provides error messages and suggestions more tailored to this context
than the previously used `reportUnboundName`.
- - - - -
f75ab223 by Peter Trommler at 2025-10-31T18:43:13-04:00
ghc-toolchain: detect PowerPC 64 bit ABI
Check preprocessor macro defined for ABI v2 and assume v1 otherwise.
Fixes #26521
- - - - -
d086c474 by Peter Trommler at 2025-10-31T18:43:13-04:00
ghc-toolchain: refactor, move lastLine to Utils
- - - - -
995dfe0d by Vladislav Zavialov at 2025-10-31T18:43:54-04:00
Tests for -Wduplicate-exports, -Wdodgy-exports
Add test cases for the previously untested diagnostics:
[GHC-51876] TcRnDupeModuleExport
[GHC-64649] TcRnNullExportedModule
This also revealed a typo (incorrect capitalization of "module") in the
warning text for TcRnDupeModuleExport, which is now fixed.
- - - - -
f6961b02 by Cheng Shao at 2025-11-01T00:08:01+01:00
wasm: reformat dyld source code
This commit reformats dyld source code with prettier, to avoid
introducing unnecessary diffs in subsequent patches when they're
formatted before committing.
- - - - -
0c9032a0 by Cheng Shao at 2025-11-01T00:08:01+01:00
wasm: simplify _initialize logic in dyld
This commit simplifies how we _initialize a wasm shared library in
dyld and removes special treatment for libc.so, see added comment for
detailed explanation.
- - - - -
ec1b40bd by Cheng Shao at 2025-11-01T00:08:01+01:00
wasm: support running dyld fully client side in the browser
This commit refactors the wasm dyld script so that it can be used to
load and run wasm shared libraries fully client-side in the browser
without needing a wasm32-wasi-ghci backend:
- A new `DyLDBrowserHost` class is exported, which runs in the browser
and uses the in-memory vfs without any RPC calls. This meant to be
used to create a `rpc` object for the fully client side use cases.
- The exported `main` function now can be used to load user-specified
shared libraries, and the user can use the returned `DyLD` instance
to run their own exported Haskell functions.
- The in-browser wasi implementation is switched to
https://github.com/haskell-wasm/browser_wasi_shim for bugfixes and
major performance improvements not landed upstream yet.
- When being run by deno, it now correctly switches to non-nodejs code
paths, so it's more convenient to test dyld logic with deno.
See added comments for details, as well as the added `playground001`
test case for an example of using it to build an in-browser Haskell
playground.
- - - - -
8f3e481f by Cheng Shao at 2025-11-01T00:08:01+01:00
testsuite: add playground001 to test haskell playground
This commit adds the playground001 test case to test the haskell
playground in browser, see comments for details.
- - - - -
af40606a by Cheng Shao at 2025-11-01T00:08:04+01:00
Revert "testsuite: add T26431 test case"
This reverts commit 695036686f8c6d78611edf3ed627608d94def6b7. T26431
is now retired, wasm ghc internal-interpreter logic is tested by
playground001.
- - - - -
86c82745 by Vladislav Zavialov at 2025-11-01T07:24:29-04:00
Supplant TcRnExportHiddenComponents with TcRnDodgyExports (#26534)
Remove a bogus special case in lookup_ie_kids_all,
making TcRnExportHiddenComponents obsolete.
- - - - -
fcf6331e by Richard Eisenberg at 2025-11-03T08:33:05+00:00
Refactor fundep solving
This commit is a large-scale refactor of the increasingly-messy code that
handles functional dependencies. It has virtually no effect on what compiles
but improves error messages a bit. And it does the groundwork for #23162.
The big picture is described in
Note [Overview of functional dependencies in type inference]
in GHC.Tc.Solver.FunDeps
* New module GHC.Tc.Solver.FunDeps contains all the fundep-handling
code for the constraint solver.
* Fundep-equalities are solved in a nested scope; they may generate
unifications but otherwise have no other effect.
See GHC.Tc.Solver.FunDeps.solveFunDeps
The nested needs to start from the Givens in the inert set, but
not the Wanteds; hence a new function `resetInertCans`, used in
`nestFunDepsTcS`.
* That in turn means that fundep equalities never show up in error
messages, so the complicated FunDepOrigin tracking can all disappear.
* We need to be careful about tracking unifications, so we kick out
constraints from the inert set after doing unifications. Unification
tracking has been majorly reformed: see Note [WhatUnifications] in
GHC.Tc.Utils.Unify.
A good consequence is that the hard-to-grok `resetUnificationFlag`
has been replaced with a simpler use of
`reportCoarseGrainUnifications`
Smaller things:
* Rename `FunDepEqn` to `FunDepEqns` since it contains multiple
type equalities.
Some compile time improvement
Metrics: compile_time/bytes allocated
Baseline
Test value New value Change
---------------------- --------------------------------------
T5030(normal) 173,839,232 148,115,248 -14.8% GOOD
hard_hole_fits(normal) 286,768,048 284,015,416 -1.0%
geo. mean -0.2%
minimum -14.8%
maximum +0.3%
Metric Decrease:
T5030
- - - - -
231adc30 by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
QuickLook's tcInstFun should make instantiation variables directly
tcInstFun must make "instantiation variables", not regular
unification variables, when instantiating function types. That was
previously implemented by a hack: set the /ambient/ level to QLInstTyVar.
But the hack finally bit me, when I was refactoring WhatUnifications.
And it was always wrong: see the now-expunged (TCAPP2) note.
This commit does it right, by making tcInstFun call its own
instantiation functions. That entails a small bit of duplication,
but the result is much, much cleaner.
- - - - -
39d4a24b by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Build implication for constraints from (static e)
This commit addresses #26466, by buiding an implication for the
constraints arising from a (static e) form. The implication has
a special ic_info field of StaticFormSkol, which tells the constraint
solver to use an empty set of Givens.
See (SF3) in Note [Grand plan for static forms]
in GHC.Iface.Tidy.StaticPtrTable
This commit also reinstates an `assert` in GHC.Tc.Solver.Equality.
The test `StaticPtrTypeFamily` was failing with an assertion failure,
but it now works.
- - - - -
2e2aec1e by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Comments about defaulting representation equalities
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52a4d1da by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Improve tracking of rewriter-sets
This refactor substantially improves the treatment of so-called
"rewriter-sets" in the constraint solver.
The story is described in the rewritten
Note [Wanteds rewrite Wanteds: rewriter-sets]
in GHC.Tc.Types.Constraint
Some highlights
* Trace the free coercion holes of a filled CoercionHole,
in CoercionPlusHoles. See Note [Coercion holes] (COH5)
This avoids taking having to take the free coercion variables
of a coercion when zonking a rewrriter-set
* Many knock on changes
* Make fillCoercionHole take CoercionPlusHoles as its argument
rather than to separate arguments.
* Similarly setEqIfWanted, setWantedE, wrapUnifierAndEmit.
* Be more careful about passing the correct CoHoleSet to
`rewriteEqEvidence` and friends
* Make kickOurAfterFillingCoercionHole more clever. See
new Note [Kick out after filling a coercion hole]
Smaller matters
* Rename RewriterSet to CoHoleSet
* Add special-case helper `rewriteEqEvidenceSwapOnly`
- - - - -
3e78e1ba by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Tidy up constraint solving for foralls
* In `can_eq_nc_forall` make sure to track Givens that are used
in the nested solve step.
* Tiny missing-swap bug-fix in `lookup_eq_in_qcis`
* Fix some leftover mess from
commit 14123ee646f2b9738a917b7cec30f9d3941c13de
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Wed Aug 20 00:35:48 2025 +0100
Solve forall-constraints via an implication, again
Specifically, trySolveImplication is now dead.
- - - - -
973f2c25 by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Do not treat CoercionHoles as free variables in coercions
This fixes a long-standing wart in the free-variable finder;
now CoercionHoles are no longer treated as a "free variable"
of a coercion.
I got big and unexpected performance regressions when making
this change. Turned out that CallArity didn't discover that
the free variable finder could be eta-expanded, which gave very
poor code.
So I re-used Note [The one-shot state monad trick] for Endo,
resulting in GHC.Utils.EndoOS. Very simple, big win.
- - - - -
c2b8a0f9 by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Update debug-tracing in CallArity
No effect on behaviour, and commented out anyway
- - - - -
9aa5ee99 by Simon Peyton Jones at 2025-11-03T08:33:28+00:00
Comments only -- remove dangling Note references
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6683f183 by Simon Peyton Jones at 2025-11-03T08:33:28+00:00
Accept error message wibbles
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3ba3d9f9 by Luite Stegeman at 2025-11-04T00:59:41-05:00
rts: fix eager black holes: record mutated closure and fix assertion
This fixes two problems with handling eager black holes, introduced
by a1de535f762bc23d4cf23a5b1853591dda12cdc9.
- the closure mutation must be recorded even for eager black holes,
since the mutator has mutated it before calling threadPaused
- The assertion that an unmarked eager black hole must be owned by
the TSO calling threadPaused is incorrect, since multiple threads
can race to claim the black hole.
fixes #26495
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b5508f2c by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
build: Relax ghc/ghc-boot Cabal bound to 3.16
Fixes #26202
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c5b3541f by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
cabal-reinstall: Use haddock-api +in-tree-ghc
Fixes #26202
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c6d4b945 by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
cabal-reinstall: Pass --strict to Happy
This is necessary to make the generated Parser build successfully
This mimics Hadrian, which always passes --strict to happy.
Fixes #26202
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79df1e0e by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
genprimopcode: Require higher happy version
I've bumped the happy version to forbid deprecated Happy versions which
don't successfully compile.
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fa5d33de by Simon Peyton Jones at 2025-11-05T08:35:40-05:00
Add a HsWrapper optimiser
This MR addresses #26349, by introduceing optSubTypeHsWrapper.
There is a long
Note [Deep subsumption and WpSubType]
in GHC.Tc.Types.Evidence that explains what is going on.
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ea58cae5 by Simon Peyton Jones at 2025-11-05T08:35:40-05:00
Improve mkWpFun_FRR
This commit ensures that `mkWpFun_FRR` directly produces a `FunCo` in
the cases where it can.
(Previously called `mkWpFun` which in turn optimised to a `FunCo`, but
that made the smarts in `mkWpFun` /essential/ rather than (as they
should be) optional.
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5cdcfaed by Ben Gamari at 2025-11-06T09:01:36-05:00
compiler: Exclude units with no exposed modules from unused package check
Such packages cannot be "used" in the Haskell sense of the word yet
are nevertheless necessary as they may provide, e.g., C object code or
link flags.
Fixes #24120.
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74b8397a by Brandon Chinn at 2025-11-06T09:02:19-05:00
Replace deprecated argparse.FileType
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36ddf988 by Ben Gamari at 2025-11-06T09:03:01-05:00
Bump unix submodule to 2.8.8.0
Closes #26474.
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c32b3a29 by fendor at 2025-11-06T09:03:43-05:00
Fix assertion in `postStringLen` to account for \0 byte
We fix the assertion to handle trailing \0 bytes in `postStringLen`.
Before this change, the assertion looked like this:
ASSERT(eb->begin + eb->size > eb->pos + len + 1);
Let's assume some values to see why this is actually off by one:
eb->begin = 0
eb->size = 1
eb->pos = 0
len = 1
then the assertion would trigger correctly:
0 + 1 > 0 + 1 + 1 => 1 > 2 => false
as there is not enough space for the \0 byte (which is the trailing +1).
However, if we change `eb->size = 2`, then we do have enough space for a
string of length 1, but the assertion still fails:
0 + 2 > 0 + 1 + 1 => 2 > 2 => false
Which causes the assertion to fail if there is exactly enough space for
the string with a trailing \0 byte.
Clearly, the assertion should be `>=`!
If we switch around the operand, it should become more obvious that `<=`
is the correct comparison:
ASSERT(eb->pos + len + 1 <= eb->begin + eb->size);
This is expresses more naturally that the current position plus the
length of the string (and the null byte) must be smaller or equal to the
overall size of the buffer.
This change also is in line with the implementation in
`hasRoomForEvent` and `hasRoomForVariableEvent`:
```
StgBool hasRoomForEvent(EventsBuf *eb, EventTypeNum eNum)
{
uint32_t size = ...;
if (eb->pos + size > eb->begin + eb->size)
...
```
the check `eb->pos + size > eb->begin + eb->size` is identical to
`eb->pos + size <= eb->begin + eb->size` plus a negation.
- - - - -
3034a6f2 by Ben Gamari at 2025-11-06T09:04:24-05:00
Bump os-string submodule to 2.0.8
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39567e85 by Cheng Shao at 2025-11-06T09:05:06-05:00
rts: use computed goto for instruction dispatch in the bytecode interpreter
This patch uses computed goto for instruction dispatch in the bytecode
interpreter. Previously instruction dispatch is done by a classic
switch loop, so executing the next instruction requires two jumps: one
to the start of the switch loop and another to the case block based on
the instruction tag. By using computed goto, we can build a jump table
consisted of code addresses indexed by the instruction tags
themselves, so executing the next instruction requires only one jump,
to the destination directly fetched from the jump table.
Closes #12953.
- - - - -
93fc7265 by sheaf at 2025-11-06T21:33:24-05:00
Correct hasFixedRuntimeRep in matchExpectedFunTys
This commit fixes a bug in the representation-polymormorphism check in
GHC.Tc.Utils.Unify.matchExpectedFunTys. The problem was that we put
the coercion resulting from hasFixedRuntimeRep in the wrong place,
leading to the Core Lint error reported in #26528.
The change is that we have to be careful when using 'mkWpFun': it
expects **both** the expected and actual argument types to have a
syntactically fixed RuntimeRep, as explained in Note [WpFun-FRR-INVARIANT]
in GHC.Tc.Types.Evidence.
On the way, this patch improves some of the commentary relating to
other usages of 'mkWpFun' in the compiler, in particular in the view
pattern case of 'tc_pat'. No functional changes, but some stylistic
changes to make the code more readable, and make it easier to understand
how we are upholding the WpFun-FRR-INVARIANT.
Fixes #26528
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c052c724 by Simon Peyton Jones at 2025-11-06T21:34:06-05:00
Fix a horrible shadowing bug in implicit parameters
Fixes #26451. The change is in GHC.Tc.Solver.Monad.updInertDicts
where we now do /not/ delete /Wanted/ implicit-parameeter constraints.
This bug has been in GHC since 9.8! But it's quite hard to provoke;
I contructed a tests in T26451, but it was hard to do so.
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b253013e by Georgios Karachalias at 2025-11-07T17:21:57-05:00
Remove the `CoreBindings` constructor from `LinkablePart`
Adjust HscRecompStatus to disallow unhydrated WholeCoreBindings
from being passed as input to getLinkDeps (which would previously
panic in this case).
Fixes #26497
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ac7b737e by Sylvain Henry at 2025-11-07T17:22:51-05:00
Testsuite: pass ext-interp test way (#26552)
Note that some tests are still marked as broken with the ext-interp way
(see #26552 and #14335)
- - - - -
3c2f4bb4 by sheaf at 2025-11-11T11:47:28-05:00
Preserve user-written kinds in data declarations
This commit ensures that we preserve the user-written kind for data
declarations, e.g. in
type T2T = Type -> Type
type D :: T2T
data D a where { .. }
that we preserve the user-written kind of D as 'T2T', instead of
expanding the type synonym 'T2T' during kind checking.
We do this by storing 'tyConKind' separately from 'tyConResKind'. This
means that 'tyConKind' is not necessarily equal to
'mkTyConKind binders res_kind', as e.g. in the above example the former
is 'T2T' while the latter is 'Type -> Type'.
This is explained in Note [Preserve user-written TyCon kind] in GHC.Core.TyCon.
This is particularly important for Haddock, as the kinds stored in
interface files affect the generated documentation, and we want to
preserve the user-written types as much as possible.
- - - - -
19859584 by sheaf at 2025-11-11T11:47:28-05:00
Store user-written datacon tvs in interface files
This commit ensures we store the user-written quantified type variables
of data constructors in interface files, e.g. in
data D a where
MkD1 :: forall x. x -> D x
MkD2 :: forall u v. u -> v -> D v
The previous behaviour was to rename the universal variables to match
the universal variables of the data constructor. This was undesirable
because the names that end up in interface files end up mattering for
generated Haddock documentation; it's better to preserve the user-written
type variables.
Moreover, the universal variables may not have been user-written at all,
e.g. in an example such as:
type T2T = Type -> Type
data G :: T2T where
MkG :: forall x. D x
Here GHC will invent the type variable name 'a' for the first binder of
the TyCon G. We really don't want to then rename the user-written 'x'
into the generated 'a'.
- - - - -
034b2056 by sheaf at 2025-11-11T11:47:28-05:00
DataCon univ_tvs names: pick TyCon over inferred
This commit changes how we compute the names of universal type variables
in GADT data constructors. This augments the existing logic that chose
which type variable name to use, in GHC.Tc.TyCl.mkGADTVars. We continue
to prefer DataCon tv names for user-written binders, but we now prefer
TyCon tv names for inferred (non-user-written) DataCon binders.
This makes a difference in examples such as:
type (:~~:) :: k1 -> k2 -> Type
data a :~~: b where
HRefl :: a :~~: a
Before this patch, we ended up giving HRefl the type:
forall {k2}. forall (a :: k2). a :~~: a
whereas we now give it the type:
forall {k1}. forall (a :: k1). a :~~: a
The important part isn't really 'k1' or 'k2', but more that the inferred
type variable names of the DataCon can be arbitrary/unpredictable (as
they are chosen by GHC and depend on how unification proceeds), so it's
much better to use the more predictable TyCon type variable names.
- - - - -
95078d00 by sheaf at 2025-11-11T11:47:28-05:00
Backpack Rename: use explicit record construction
This commit updates the Backpack boilerplate in GHC.Iface.Rename to
use explicit record construction rather than record update. This makes
sure that the code stays up to date when the underlying constructors
change (e.g. new fields are added). The rationale is further explained
in Note [Prefer explicit record construction].
- - - - -
2bf36263 by sheaf at 2025-11-11T11:47:28-05:00
Store # eta binders in TyCon and use for Haddock
This commit stores the number of TyCon binders that were introduced by
eta-expansion (by the function GHC.Tc.Gen.HsType.splitTyConKind).
This is then used to pretty-print the TyCon as the user wrote it, e.g.
for
type Effect :: (Type -> Type) -> Type -> Type
data State s :: Effect where {..} -- arity 3
GHC will eta-expand the data declaration to
data State s a b where {..}
but also store in the 'TyCon' that the number of binders introduced by
this eta expansion is 2. This allows us, in
'Haddock.Convert.synifyTyConKindSig', to recover the original user-written
syntax, preserving the user's intent in Haddock documentation.
See Note [Inline kind signatures with GADTSyntax] in Haddock.Convert.
- - - - -
6c91582f by Matthew Pickering at 2025-11-11T11:48:12-05:00
driver: Properly handle errors during LinkNode steps
Previously we were not properly catching errors during the LinkNode step
(see T9930fail test).
This is fixed by wrapping the `LinkNode` action in `wrapAction`, the
same handler which is used for module compilation.
Fixes #26496
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e1e1eb32 by Matthew Pickering at 2025-11-11T11:48:54-05:00
driver: Remove unecessary call to hscInsertHPT
This call was left-over from e9445c013fbccf9318739ca3d095a3e0a2e1be8a
If you follow the functions which call `upsweep_mod`, they immediately
add the interface to the HomePackageTable when `upsweep_mod` returns.
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b22777d4 by ARATA Mizuki at 2025-11-11T11:49:44-05:00
LLVM backend: Pass the +evex512 attribute to LLVM 18+ if -mavx512f is set
The newer LLVM requires the +evex512 attribute to enable use of ZMM registers.
LLVM exhibits a backward-compatible behavior if the cpu is `x86-64`, but not if `penryn`.
Therefore, on macOS, where the cpu is set to `penryn`, we need to explicitly pass +evex512.
Fixes #26410
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6ead7d06 by Vladislav Zavialov at 2025-11-11T11:50:26-05:00
Comments only in GHC.Parser.PostProcess.Haddock
Remove outdated Note [Register keyword location], as the issue it describes
was addressed by commit 05eb50dff2fcc78d025e77b9418ddb369db49b9f.
- - - - -
43fa8be8 by sheaf at 2025-11-11T11:51:18-05:00
localRegistersConflict: account for assignment LHS
This commit fixes a serious oversight in GHC.Cmm.Sink.conflicts,
specifically the code that computes which local registers conflict
between an assignment and a Cmm statement.
If we have:
assignment: <local_reg> = <expr>
node: <local_reg> = <other_expr>
then clearly the two conflict, because we cannot move one statement past
the other, as they assign two different values to the same local
register. (Recall that 'conflicts (local_reg,expr) node' is False if and
only if the assignment 'local_reg = expr' can be safely commuted past
the statement 'node'.)
The fix is to update 'GHC.Cmm.Sink.localRegistersConflict' to take into
account the following two situations:
(1) 'node' defines the LHS local register of the assignment,
(2) 'node' defines a local register used in the RHS of the assignment.
The bug is precisely that we were previously missing condition (1).
Fixes #26550
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79dfcfe0 by sheaf at 2025-11-11T11:51:18-05:00
Update assigned register format when spilling
When we come to spilling a register to put new data into it, in
GHC.CmmToAsm.Reg.Linear.allocRegsAndSpill_spill, we need to:
1. Spill the data currently in the register. That is, do a spill
with a format that matches what's currently in the register.
2. Update the register assignment, allocating a virtual register to
this real register, but crucially **updating the format** of this
assignment.
Due to shadowing in the Haskell code for allocRegsAndSpill_spill, we
were mistakenly re-using the old format. This could lead to a situation
where:
a. We were using xmm6 to store a Double#.
b. We want to store a DoubleX2# into xmm6, so we spill the current
content of xmm6 to the stack using a scalar move (correct).
c. We update the register assignment, but we fail to update the format
of the assignment, so we continue to think that xmm6 stores a
Double# and not a DoubleX2#.
d. Later on, we need to spill xmm6 because it is getting clobbered by
another instruction. We then decide to only spill the lower 64 bits
of the register, because we still think that xmm6 only stores a
Double# and not a DoubleX2#.
Fixes #26542
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aada5db9 by ARATA Mizuki at 2025-11-11T11:52:07-05:00
Fix the order of spill/reload instructions
The AArch64 NCG could emit multiple instructions for a single spill/reload,
but their order was not consistent between the definition and a use.
Fixes #26537
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
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64ec82ff by Andreas Klebinger at 2025-11-11T11:52:48-05:00
Add hpc to release script
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741da00c by Ben Gamari at 2025-11-12T03:38:20-05:00
template-haskell: Better describe getQ semantics
Clarify that the state is a type-indexed map, as suggested by #26484.
- - - - -
8b080e04 by ARATA Mizuki at 2025-11-12T03:39:11-05:00
Fix incorrect markups in the User's Guide
* Correct markup for C--: "C-\-" in reST
* Fix internal links
* Fix code highlighting
* Fix inline code: Use ``code`` rather than `code`
* Remove extra backslashes
Fixes #16812
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
a00840ea by Simon Peyton Jones at 2025-11-14T15:23:56+00:00
Make TYPE and CONSTRAINT apart again
This patch finally fixes #24279.
* The story started with #11715
* Then #21623 articulated a plan, which made Type and Constraint
not-apart; a horrible hack but it worked. The main patch was
commit 778c6adca2c995cd8a1b84394d4d5ca26b915dac
Author: Simon Peyton Jones <simonpj(a)microsoft.com>
Date: Wed Nov 9 10:33:22 2022 +0000
Type vs Constraint: finally nailed
* #24279 reported a bug in the above big commit; this small patch fixes it
commit af6932d6c068361c6ae300d52e72fbe13f8e1f18
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Mon Jan 8 10:49:49 2024 +0000
Make TYPE and CONSTRAINT not-apart
Issue #24279 showed up a bug in the logic in GHC.Core.Unify.unify_ty
which is supposed to make TYPE and CONSTRAINT be not-apart.
* Then !10479 implemented "unary classes".
* That change in turn allows us to make Type and Constraint apart again,
cleaning up the compiler and allowing a little bit more expressiveness.
It fixes the original hope in #24279, namely that `Type` and `Constraint`
should be distinct throughout.
- - - - -
c0a1e574 by Georgios Karachalias at 2025-11-15T05:14:31-05:00
Report all missing modules with -M
We now report all missing modules at once in GHC.Driver.Makefile.processDeps,
as opposed to only reporting a single missing module. Fixes #26551.
- - - - -
c9fa3449 by Sylvain Henry at 2025-11-15T05:15:26-05:00
JS: fix array index for registers
We used to store R32 in h$regs[-1]. While it's correct in JavaScript,
fix this to store R32 in h$regs[0] instead.
- - - - -
9e469909 by Sylvain Henry at 2025-11-15T05:15:26-05:00
JS: support more than 128 registers (#26558)
The JS backend only supported 128 registers (JS variables/array slots
used to pass function arguments). It failed in T26537 when 129
registers were required.
This commit adds support for more than 128 registers: it is now limited to
maxBound :: Int (compiler's Int). If we ever go above this threshold the
compiler now panics with a more descriptive message.
A few built-in JS functions were assuming 128 registers and have been
rewritten to use loops. Note that loops are only used for "high"
registers that are stored in an array: the 31 "low" registers are still
handled with JS global variables and with explicit switch-cases to
maintain good performance in the most common cases (i.e. few registers
used). Adjusting the number of low registers is now easy: just one
constant to adjust (GHC.StgToJS.Regs.lowRegsCount).
No new test added: T26537 is used as a regression test instead.
- - - - -
0a64a78b by Sven Tennie at 2025-11-15T20:31:10-05:00
AArch64: Simplify CmmAssign and CmmStore
The special handling for floats was fake: The general case is always
used. So, the additional code path isn't needed (and only adds
complexity for the reader.)
- - - - -
15b311be by sheaf at 2025-11-15T20:32:02-05:00
SimpleOpt: refactor & push coercions into lambdas
This commit improves the simple optimiser (in GHC.Core.SimpleOpt)
in a couple of ways:
- The logic to push coercion lambdas is shored up.
The function 'pushCoercionIntoLambda' used to be called in 'finish_app',
but this meant we could not continue to optimise the program after
performing this transformation.
Now, we call 'pushCoercionIntoLambda' as part of 'simple_app'.
Doing so can be important when dealing with unlifted newtypes,
as explained in Note [Desugaring unlifted newtypes].
- The code is re-structured to avoid duplication and out-of-sync
code paths.
Now, 'simple_opt_expr' defers to 'simple_app' for the 'App', 'Var',
'Cast' and 'Lam' cases. This means all the logic for those is
centralised in a single place (e.g. the 'go_lam' helper function).
To do this, the general structure is brought a bit closer to the
full-blown simplifier, with a notion of 'continuation'
(see 'SimpleContItem').
This commit also modifies GHC.Core.Opt.Arity.pushCoercionIntoLambda to
apply a substitution (a slight generalisation of its existing implementation).
- - - - -
b33284c7 by sheaf at 2025-11-15T20:32:02-05:00
Improve typechecking of data constructors
This commit changes the way in which we perform typecheck data
constructors, in particular how we make multiplicities line up.
Now, impedance matching occurs as part of the existing subsumption
machinery. See the revamped Note [Typechecking data constructors] in
GHC.Tc.Gen.App, as well as Note [Polymorphisation of linear fields]
in GHC.Core.Multiplicity.
This allows us to get rid of a fair amount of hacky code that was
added with the introduction of LinearTypes; in particular the logic of
GHC.Tc.Gen.Head.tcInferDataCon.
-------------------------
Metric Decrease:
T10421
T14766
T15164
T15703
T19695
T5642
T9630
WWRec
-------------------------
- - - - -
b6faf5d0 by sheaf at 2025-11-15T20:32:02-05:00
Handle unsaturated rep-poly newtypes
This commit allows GHC to handle unsaturated occurrences of unlifted
newtype constructors. The plan is detailed in
Note [Eta-expanding rep-poly unlifted newtypes]
in GHC.Tc.Utils.Concrete: for unsaturated unlifted newtypes, we perform
the appropriate representation-polymorphism check in tcInstFun.
- - - - -
682bf979 by Mike Pilgrem at 2025-11-16T16:44:14+00:00
Fix #26293 Valid stack.yaml for hadrian
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acc70c3a by Simon Peyton Jones at 2025-11-18T16:21:20-05:00
Fix a bug in defaulting
Addresses #26582
Defaulting was doing some unification but then failing to
iterate. Silly.
I discovered that the main solver was unnecessarily iterating even
if there was a unification for an /outer/ unification variable, so
I fixed that too.
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c12fa73e by Simon Peyton Jones at 2025-11-19T02:55:01-05:00
Make PmLit be in Ord, and use it in Map
This MR addresses #26514, by changing from
data PmAltConSet = PACS !(UniqDSet ConLike) ![PmLit]
to
data PmAltConSet = PACS !(UniqDSet ConLike) !(Map PmLit PmLit)
This matters when doing pattern-match overlap checking, when there
is a very large set of patterns. For most programs it makes
no difference at all.
For the N=5000 case of the repro case in #26514, compiler
mutator time (with `-fno-code`) goes from 1.9s to 0.43s.
All for the price for an Ord instance for PmLit
- - - - -
41b84f40 by sheaf at 2025-11-19T02:55:52-05:00
Add passing tests for #26311 and #26072
This commit adds two tests cases that now pass since landing the changes
to typechecking of data constructors in b33284c7.
Fixes #26072 #26311
- - - - -
1faa758a by sheaf at 2025-11-19T02:55:52-05:00
mkCast: weaken bad cast warning for multiplicity
This commit weakens the warning message emitted when constructing a bad
cast in mkCast to ignore multiplicity.
Justification: since b33284c7, GHC uses sub-multiplicity coercions to
typecheck data constructors. The coercion optimiser is free to discard
these coercions, both for performance reasons, and because GHC's Core
simplifier does not (yet) preserve linearity.
We thus weaken 'mkCast' to use 'eqTypeIgnoringMultiplicity' instead of
'eqType', to avoid getting many spurious warnings about mismatched
multiplicities.
- - - - -
55eab80d by Sylvain Henry at 2025-11-20T17:33:13-05:00
Build external interpreter program on demand (#24731)
This patch teaches GHC how to build the external interpreter program
when it is missing. As long as we have the `ghci` library, doing this is
trivial so most of this patch is refactoring for doing it sanely.
- - - - -
08bbc028 by Rodrigo Mesquita at 2025-11-20T17:33:54-05:00
Add tests for #23973 and #26565
These were fixed by 4af4f0f070f83f948e49ad5d7835fd91b8d3f0e6 in !10417
- - - - -
6b42232c by sheaf at 2025-11-20T17:34:35-05:00
Mark T26410_ffi as fragile on Windows
As seen in #26595, this test intermittently fails on Windows.
This commit marks it as fragile, until we get around to fixing it.
- - - - -
b7b7c049 by Andrew Lelechenko at 2025-11-21T21:04:01+00:00
Add nubOrd / nubOrdBy to Data.List and Data.List.NonEmpty
As per https://github.com/haskell/core-libraries-committee/issues/336
- - - - -
352d5462 by Marc Scholten at 2025-11-22T10:33:03-05:00
Fix haddock test runner to handle UTF-8 output
xhtml 3000.4.0.0 now produces UTF-8 output instead of escaping non-ASCII characters.
When using --test-accept it previously wrote files in the wrong encoding
because they have not been decoded properly when reading the files.
- - - - -
48a3ed57 by Simon Peyton Jones at 2025-11-25T15:33:54+00:00
Add a fast-path for args=[] to occAnalApp
In the common case of having not arguments, occAnalApp
was doing redundant work.
- - - - -
951e5ed9 by Simon Peyton Jones at 2025-11-25T15:33:54+00:00
Fix a performance hole in the occurrence analyser
As #26425 showed, the clever stuff in
Note [Occurrence analysis for join points]
does a lot of duplication of usage details. This patch
improved matters with a little fancy footwork. It is
described in the new (W4) of the same Note.
Compile-time allocations go down slightly. Here are the changes
of +/- 0.5% or more:
T13253(normal) 329,369,244 326,395,544 -0.9%
T13253-spj(normal) 66,410,496 66,095,864 -0.5%
T15630(normal) 129,797,200 128,663,136 -0.9%
T15630a(normal) 129,212,408 128,027,560 -0.9%
T16577(normal) 6,756,706,896 6,723,028,512 -0.5%
T18282(normal) 128,462,070 125,808,584 -2.1% GOOD
T18698a(normal) 208,418,305 202,037,336 -3.1% GOOD
T18730(optasm) 136,981,756 136,208,136 -0.6%
T18923(normal) 58,103,088 57,745,840 -0.6%
T19695(normal) 1,386,306,272 1,365,609,416 -1.5%
T26425(normal) 3,344,402,957 2,457,811,664 -26.5% GOOD
T6048(optasm) 79,763,816 79,212,760 -0.7%
T9020(optasm) 225,278,408 223,682,440 -0.7%
T9961(normal) 303,810,717 300,729,168 -1.0% GOOD
geo. mean -0.5%
minimum -26.5%
maximum +0.4%
Metric Decrease:
T18282
T18698a
T26425
T9961
- - - - -
f1959dfc by Simon Peyton Jones at 2025-11-26T11:58:07+00:00
Remove a quadratic-cost assertion check in mkCoreApp
See the new Note [Assertion checking in mkCoreApp]
- - - - -
98fa0d36 by Simon Hengel at 2025-11-27T17:54:57-05:00
Fix typo in docs/users_guide/exts/type_families.rst
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5b97e5ce by Simon Hengel at 2025-11-27T17:55:37-05:00
Fix broken RankNTypes example in user's guide
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fa2aaa00 by Simon Peyton Jones at 2025-11-27T17:56:18-05:00
Switch off specialisation in ExactPrint
In !15057 (where we re-introduced -fpolymoprhic-specialisation) we found
that ExactPrint's compile time blew up by a factor of 5. It turned out
to be caused by bazillions of specialisations of `markAnnotated`.
Since ExactPrint isn't perf-critical, it does not seem worth taking
the performance hit, so this patch switches off specialisation in
this one module.
- - - - -
1fd25987 by Simon Peyton Jones at 2025-11-27T17:56:18-05:00
Switch -fpolymorphic-specialisation on by default
This patch addresses #23559.
Now that !10479 has landed and #26329 is fixed, we can switch on
polymorphic specialisation by default, addressing a bunch of other
tickets listed in #23559.
Metric changes:
* CoOpt_Singleton: +4% compiler allocations: we just get more
specialisations
* info_table_map_perf: -20% decrease in compiler allocations.
This is caused by using -fno-specialise in ExactPrint.hs
Without that change we get a 4x blow-up in compile time;
see !15058 for details
Metric Decrease:
info_table_map_perf
Metric Increase:
CoOpt_Singletons
- - - - -
b7fe7445 by Matthew Pickering at 2025-11-27T17:56:59-05:00
rts: Fix a deadlock with eventlog flush interval and RTS shutdown
The ghc_ticker thread attempts to flush at the eventlog tick interval, this requires
waiting to take all capabilities.
At the same time, the main thread is shutting down, the schedule is
stopped and then we wait for the ticker thread to finish.
Therefore we are deadlocked.
The solution is to use `newBoundTask/exitMyTask`, so that flushing can
cooperate with the scheduler shutdown.
Fixes #26573
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1d4a1229 by sheaf at 2025-11-27T17:58:02-05:00
SimpleOpt: don't subst in pushCoercionIntoLambda
It was noticed in #26589 that the change in 15b311be was incorrect:
the simple optimiser carries two different substitution-like pieces of
information: 'soe_subst' (from InVar to OutExpr) and 'soe_inl'
(from InId to InExpr). It is thus incorrect to have 'pushCoercionIntoLambda'
apply the substitution from 'soe_subst' while discarding 'soe_inl'
entirely, which is what was done in 15b311be.
Instead, we change back pushCoercionIntoLambda to take an InScopeSet,
and optimise the lambda before calling 'pushCoercionIntoLambda' to avoid
mixing InExpr with OutExpr, or mixing two InExpr with different
environments. We can then call 'soeZapSubst' without problems.
Fixes #26588 #26589
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84a087d5 by Sylvain Henry at 2025-11-28T17:35:28-05:00
Fix PIC jump tables on Windows (#24016)
Avoid overflows in jump tables by using a base label closer to the jump
targets. See added Note [Jump tables]
- - - - -
82db7042 by Zubin Duggal at 2025-11-28T17:36:10-05:00
rts/linker/PEi386: Copy strings before they are inserted into LoadedDllCache. The original strings are temporary and might be freed at an arbitrary point.
Fixes #26613
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ff3f0d09 by Ben Gamari at 2025-11-29T18:34:28-05:00
gitlab-ci: Run ghcup-metadata jobs on OpenCape runners
This significantly reduces our egress traffic
and makes the jobs significantly faster.
- - - - -
ef0dc33b by Matthew Pickering at 2025-11-29T18:35:10-05:00
Use 'OsPath' in getModificationTimeIfExists
This part of the compiler is quite hot during recompilation checking in
particular since the filepaths will be translated to a string. It is
better to use the 'OsPath' native function, which turns out to be easy
to do.
- - - - -
fa3bd0a6 by Georgios Karachalias at 2025-11-29T18:36:05-05:00
Use OsPath in PkgDbRef and UnitDatabase, not FilePath
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0d7c05ec by Ben Gamari at 2025-12-01T03:13:46-05:00
hadrian: Place user options after package arguments
This makes it easier for the user to override the default package
arguments with `UserSettings.hs`.
Fixes #25821.
-------------------------
Metric Decrease:
T14697
-------------------------
- - - - -
3b2c4598 by Vladislav Zavialov at 2025-12-01T03:14:29-05:00
Namespace-specified wildcards in import/export lists (#25901)
This change adds support for top-level namespace-specified wildcards
`type ..` and `data ..` to import and export lists.
Examples:
import M (type ..) -- imports all type and class constructors from M
import M (data ..) -- imports all data constructors and terms from M
module M (type .., f) where
-- exports all type and class constructors defined in M,
-- plus the function 'f'
The primary intended usage of this feature is in combination with module
aliases, allowing namespace disambiguation:
import Data.Proxy as T (type ..) -- T.Proxy is unambiguously the type constructor
import Data.Proxy as D (data ..) -- D.Proxy is unambiguously the data constructor
The patch accounts for the interactions of wildcards with:
* Imports with `hiding` clauses
* Import warnings -Wunused-imports, -Wdodgy-imports
* Export warnings -Wduplicate-exports, -Wdodgy-exports
Summary of the changes:
1. Move the NamespaceSpecifier type from GHC.Hs.Binds to GHC.Hs.Basic,
making it possible to use it in more places in the AST.
2. Extend the AST (type: IE) with a representation of `..`, `type ..`,
and `data ..` (constructor: IEWholeNamespace). Per the proposal, the
plain `..` is always rejected with a dedicated error message.
3. Extend the grammar in Parser.y with productions for `..`, `type ..`,
and `data ..` in both import and export lists.
4. Implement wildcard imports by updating the `filterImports` function
in GHC.Rename.Names; the logic for IEWholeNamespace is roughly
modeled after the Nothing (no explicit import list) case.
5. Implement wildcard exports by updating the `exports_from_avail`
function in GHC.Tc.Gen.Export; the logic for IEWholeNamespace is
closely modeled after the IEModuleContents case.
6. Refactor and extend diagnostics to report the new warnings and
errors. See PsErrPlainWildcardImport, DodgyImportsWildcard,
PsErrPlainWildcardExport, DodgyExportsWildcard,
TcRnDupeWildcardExport.
Note that this patch is specifically about top-level import/export
items. Subordinate import/export items are left unchanged.
- - - - -
c71faa76 by Luite Stegeman at 2025-12-01T03:16:05-05:00
rts: Handle overflow of ELF section header string table
If the section header string table is stored in a section greater
than or equal to SHN_LORESERVE (0xff00), the 16-bit field e_shstrndx
in the ELF header does not contain the section number, but rather
an overflow value SHN_XINDEX (0xffff) indicating that we need to look
elsewhere.
This fixes the linker by not using e_shstrndx directly but calling
elf_shstrndx, which correctly handles the SHN_XINDEX value.
Fixes #26603
- - - - -
ab20eb54 by Mike Pilgrem at 2025-12-01T22:46:55+00:00
Re CLC issue 292 Warn GHC.Internal.List.{init,last} are partial
Also corrects the warning for `tail` to refer to `Data.List.uncons` (like the existing warning for `head`).
In module `Settings.Warnings`, applies `-Wno-x-partial` to the `filepath`, and `parsec` packages (outside GHC's repository).
Also bumps submodules.
- - - - -
fc1d7f79 by Jade Lovelace at 2025-12-02T11:04:09-05:00
docs: fix StandaloneKindSignatures in DataKinds docs
These should be `type` as otherwise GHC reports a duplicate definition
error.
- - - - -
d16f5641 by Teo Camarasu at 2025-12-03T18:25:15+00:00
base: don't expose GHC.Num.{BigNat, Integer, Natural}
We no longer expose GHC.Num.{BigNat, Integer, Natural} from base instead users should get these modules from ghc-bignum.
We make this change to insulate end users from changes to GHC's implementation of big numbers.
Implements CLC proposal 359: https://github.com/haskell/core-libraries-committee/issues/359
- - - - -
1224 changed files:
- .gitlab-ci.yml
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- .gitlab/rel_eng/upload_ghc_libs.py
- .gitmodules
- cabal.project-reinstall
- compiler/GHC.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types/Literals.hs
- compiler/GHC/Builtin/Types/Prim.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Breakpoints.hs
- + compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/Info.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/Cmm/UniqueRenamer.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/Config.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion.hs-boot
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/ConLike.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CallArity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/Pipeline/Types.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Monad.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/PatSyn.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Reduction.hs
- compiler/GHC/Core/RoughMap.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/Rules/Config.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/FlatBag.hs
- compiler/GHC/Data/OsPath.hs
- compiler/GHC/Data/SmallArray.hs
- compiler/GHC/Data/Word64Map/Internal.hs
- compiler/GHC/Data/Word64Map/Lazy.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Backend/Internal.hs
- compiler/GHC/Driver/Backpack.hs
- + compiler/GHC/Driver/ByteCode.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config/CmmToAsm.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Core/Rules.hs
- compiler/GHC/Driver/Config/Finder.hs
- + compiler/GHC/Driver/Config/Interpreter.hs
- compiler/GHC/Driver/Config/Linker.hs
- compiler/GHC/Driver/Config/Stg/Debug.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Driver/Messager.hs
- compiler/GHC/Driver/Monad.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/Basic.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Docs.hs
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- compiler/GHC/Runtime/Heap/Inspect.hs
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- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- + compiler/GHC/Tc/Solver/FunDeps.hs
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- compiler/GHC/Tc/Solver/Monad.hs
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- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/Solver/Solve.hs-boot
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- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Utils/Unify.hs-boot
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- compiler/GHC/Tc/Zonk/TcType.hs
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- compiler/GHC/ThToHs.hs
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- compiler/GHC/Types/Error/Codes.hs
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- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/RepType.hs
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- compiler/GHC/Types/SourceText.hs
- compiler/GHC/Types/SptEntry.hs
- compiler/GHC/Types/Tickish.hs
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- compiler/GHC/Types/Unique.hs
- compiler/GHC/Types/Unique/DFM.hs
- compiler/GHC/Types/Unique/DSM.hs
- compiler/GHC/Types/Unique/FM.hs
- compiler/GHC/Types/Unique/Set.hs
- compiler/GHC/Types/Unique/Supply.hs
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- compiler/GHC/Unit/Module/Status.hs
- compiler/GHC/Unit/Module/WholeCoreBindings.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Utils/Binary.hs
- + compiler/GHC/Utils/EndoOS.hs
- compiler/GHC/Utils/Error.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/GHC/Utils/Ppr.hs
- compiler/Language/Haskell/Syntax/Binds.hs
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- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- compiler/Setup.hs
- compiler/cbits/keepCAFsForGHCi.c
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- configure.ac
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- docs/users_guide/wasm.rst
- docs/users_guide/win32-dlls.rst
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- ghc/Main.hs
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- libraries/base/src/Data/List.hs
- libraries/base/src/Data/List/NonEmpty.hs
- + libraries/base/src/Data/List/NubOrdSet.hs
- libraries/base/src/GHC/Base.hs
- libraries/base/src/GHC/Exts.hs
- libraries/base/src/GHC/Num.hs
- − libraries/base/src/GHC/Num/BigNat.hs
- − libraries/base/src/GHC/Num/Integer.hs
- − libraries/base/src/GHC/Num/Natural.hs
- libraries/base/src/GHC/RTS/Flags.hs
- libraries/base/src/System/CPUTime/Utils.hs
- libraries/base/tests/all.T
- libraries/base/tests/unicode002.stdout
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- libraries/ghc-experimental/src/GHC/TypeNats/Experimental.hs
- libraries/ghc-heap/GHC/Exts/Heap.hs
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- libraries/ghc-internal/codepages/Makefile
- libraries/ghc-internal/ghc-internal.cabal.in
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- libraries/ghci/GHCi/Message.hs
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- libraries/ghci/GHCi/Run.hs
- libraries/os-string
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- + libraries/template-haskell-quasiquoter
- libraries/template-haskell/vendored-filepath/System/FilePath/Posix.hs
- libraries/template-haskell/vendored-filepath/System/FilePath/Windows.hs
- libraries/unix
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- m4/fp_check_pthreads.m4
- m4/fp_cmm_cpp_cmd_with_args.m4
- m4/fp_find_libdw.m4
- − m4/fp_set_cflags_c99.m4
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- m4/ghc_toolchain.m4
- m4/prep_target_file.m4
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- mk/hsc2hs.in
- rts/Apply.cmm
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- rts/CloneStack.h
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- rts/PrimOps.cmm
- rts/Printer.c
- rts/ProfHeap.c
- rts/RetainerSet.c
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- − rts/RtsDllMain.c
- − rts/RtsDllMain.h
- rts/RtsFlags.c
- rts/RtsSignals.h
- rts/RtsStartup.c
- rts/RtsSymbols.c
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- rts/Schedule.c
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- rts/Task.c
- rts/Task.h
- rts/ThreadPaused.c
- rts/Threads.c
- + rts/TimeoutQueue.c
- + rts/TimeoutQueue.h
- rts/configure.ac
- rts/eventlog/EventLog.c
- − rts/external-symbols.list.in
- rts/gen_event_types.py
- rts/include/Rts.h
- rts/include/RtsAPI.h
- rts/include/Stg.h
- rts/include/rts/Bytecodes.h
- rts/include/rts/Constants.h
- rts/include/rts/Flags.h
- rts/include/rts/NonMoving.h
- rts/include/rts/OSThreads.h
- + rts/include/rts/RtsToHsIface.h
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- rts/include/rts/Types.h
- rts/include/rts/storage/Block.h
- rts/include/rts/storage/Closures.h
- rts/include/rts/storage/TSO.h
- − rts/include/stg/DLL.h
- rts/include/stg/MiscClosures.h
- rts/include/stg/Prim.h
- rts/js/mem.js
- rts/linker/Elf.c
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- + rts/posix/Poll.c
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- rts/posix/Signals.c
- + rts/posix/Timeout.c
- + rts/posix/Timeout.h
- libraries/ghc-internal/cbits/atomic.c → rts/prim/atomic.c
- libraries/ghc-internal/cbits/bitrev.c → rts/prim/bitrev.c
- libraries/ghc-internal/cbits/bswap.c → rts/prim/bswap.c
- libraries/ghc-internal/cbits/clz.c → rts/prim/clz.c
- libraries/ghc-internal/cbits/ctz.c → rts/prim/ctz.c
- libraries/ghc-internal/cbits/int64x2minmax.c → rts/prim/int64x2minmax.c
- libraries/ghc-internal/cbits/longlong.c → rts/prim/longlong.c
- libraries/ghc-internal/cbits/mulIntMayOflo.c → rts/prim/mulIntMayOflo.c
- libraries/ghc-internal/cbits/pdep.c → rts/prim/pdep.c
- libraries/ghc-internal/cbits/pext.c → rts/prim/pext.c
- libraries/ghc-internal/cbits/popcnt.c → rts/prim/popcnt.c
- libraries/ghc-internal/cbits/vectorQuotRem.c → rts/prim/vectorQuotRem.c
- libraries/ghc-internal/cbits/word2float.c → rts/prim/word2float.c
- rts/rts.buildinfo.in
- rts/rts.cabal
- rts/sm/BlockAlloc.c
- rts/sm/Evac.c
- rts/sm/Evac.h
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- rts/sm/NonMoving.c
- rts/sm/NonMovingMark.c
- rts/sm/Scav.c
- rts/sm/Storage.c
- rts/wasm/JSFFI.c
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- testsuite/mk/test.mk
- testsuite/tests/arrows/gadt/T17423.stderr
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- + testsuite/tests/codeGen/should_compile/T20298c.hs
- + testsuite/tests/codeGen/should_compile/T20298c.stderr
- testsuite/tests/codeGen/should_compile/T25166.stdout → testsuite/tests/codeGen/should_compile/T25166.stdout-ws-32
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- testsuite/tests/codeGen/should_compile/all.T
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03 Dec '25
Teo Camarasu pushed to branch wip/T26625 at Glasgow Haskell Compiler / GHC
Commits:
7a49d574 by Teo Camarasu at 2025-12-03T18:04:15+00:00
Add explicit export list to GHC.Num
Let's make clear what this module exports to allow us to easily deprecate and remove some of these in the future. Resolves https://gitlab.haskell.org/ghc/ghc/-/issues/26625
- - - - -
1 changed file:
- libraries/base/src/GHC/Num.hs
Changes:
=====================================
libraries/base/src/GHC/Num.hs
=====================================
@@ -1,3 +1,4 @@
+{-# LANGUAGE MagicHash #-}
{-# OPTIONS_HADDOCK not-home #-}
-- |
@@ -16,11 +17,190 @@ module GHC.Num
( Num(..)
, subtract
, quotRemInteger
- , module GHC.Num.Integer
- , module GHC.Num.Natural
+ , integerFromNatural
+ , integerToNaturalClamp
+ , integerToNaturalThrow
+ , integerToNatural
+ , integerToWord#
+ , integerToInt#
+ , integerToWord64#
+ , integerToInt64#
+ , integerAdd
+ , integerMul
+ , integerSub
+ , integerNegate
+ , integerAbs
+ , integerPopCount#
+ , integerQuot
+ , integerRem
+ , integerDiv
+ , integerMod
+ , integerDivMod#
+ , integerQuotRem#
+ , integerEncodeFloat#
+ , integerEncodeDouble#
+ , integerGcd
+ , integerLcm
+ , integerAnd
+ , integerOr
+ , integerXor
+ , integerComplement
+ , integerBit#
+ , integerTestBit#
+ , integerShiftL#
+ , integerShiftR#
+ , integerFromWord#
+ , integerFromWord64#
+ , integerFromInt64#
+ , Integer(..)
+ , integerBit
+ , integerCheck
+ , integerCheck#
+ , integerCompare
+ , integerDecodeDouble#
+ , integerDivMod
+ , integerEncodeDouble
+ , integerEq
+ , integerEq#
+ , integerFromAddr
+ , integerFromAddr#
+ , integerFromBigNat#
+ , integerFromBigNatNeg#
+ , integerFromBigNatSign#
+ , integerFromByteArray
+ , integerFromByteArray#
+ , integerFromInt
+ , integerFromInt#
+ , integerFromWord
+ , integerFromWordList
+ , integerFromWordNeg#
+ , integerFromWordSign#
+ , integerGcde
+ , integerGcde#
+ , integerGe
+ , integerGe#
+ , integerGt
+ , integerGt#
+ , integerIsNegative
+ , integerIsNegative#
+ , integerIsOne
+ , integerIsPowerOf2#
+ , integerIsZero
+ , integerLe
+ , integerLe#
+ , integerLog2
+ , integerLog2#
+ , integerLogBase
+ , integerLogBase#
+ , integerLogBaseWord
+ , integerLogBaseWord#
+ , integerLt
+ , integerLt#
+ , integerNe
+ , integerNe#
+ , integerOne
+ , integerPowMod#
+ , integerQuotRem
+ , integerRecipMod#
+ , integerShiftL
+ , integerShiftR
+ , integerSignum
+ , integerSignum#
+ , integerSizeInBase#
+ , integerSqr
+ , integerTestBit
+ , integerToAddr
+ , integerToAddr#
+ , integerToBigNatClamp#
+ , integerToBigNatSign#
+ , integerToInt
+ , integerToMutableByteArray
+ , integerToMutableByteArray#
+ , integerToWord
+ , integerZero
+ , naturalToWord#
+ , naturalPopCount#
+ , naturalShiftR#
+ , naturalShiftL#
+ , naturalAdd
+ , naturalSub
+ , naturalSubThrow
+ , naturalSubUnsafe
+ , naturalMul
+ , naturalQuotRem#
+ , naturalQuot
+ , naturalRem
+ , naturalAnd
+ , naturalAndNot
+ , naturalOr
+ , naturalXor
+ , naturalTestBit#
+ , naturalBit#
+ , naturalGcd
+ , naturalLcm
+ , naturalLog2#
+ , naturalLogBaseWord#
+ , naturalLogBase#
+ , naturalPowMod
+ , naturalSizeInBase#
+ , Natural(..)
+ , naturalBit
+ , naturalCheck
+ , naturalCheck#
+ , naturalClearBit
+ , naturalClearBit#
+ , naturalCompare
+ , naturalComplementBit
+ , naturalComplementBit#
+ , naturalEncodeDouble#
+ , naturalEncodeFloat#
+ , naturalEq
+ , naturalEq#
+ , naturalFromAddr
+ , naturalFromAddr#
+ , naturalFromBigNat#
+ , naturalFromByteArray#
+ , naturalFromWord
+ , naturalFromWord#
+ , naturalFromWord2#
+ , naturalFromWordList
+ , naturalGe
+ , naturalGe#
+ , naturalGt
+ , naturalGt#
+ , naturalIsOne
+ , naturalIsPowerOf2#
+ , naturalIsZero
+ , naturalLe
+ , naturalLe#
+ , naturalLog2
+ , naturalLogBase
+ , naturalLogBaseWord
+ , naturalLt
+ , naturalLt#
+ , naturalNe
+ , naturalNe#
+ , naturalNegate
+ , naturalOne
+ , naturalPopCount
+ , naturalQuotRem
+ , naturalSetBit
+ , naturalSetBit#
+ , naturalShiftL
+ , naturalShiftR
+ , naturalSignum
+ , naturalSqr
+ , naturalTestBit
+ , naturalToAddr
+ , naturalToAddr#
+ , naturalToBigNat#
+ , naturalToMutableByteArray#
+ , naturalToWord
+ , naturalToWordClamp
+ , naturalToWordClamp#
+ , naturalToWordMaybe#
+ , naturalZero
)
where
import GHC.Internal.Num
-import GHC.Num.Integer
-import GHC.Num.Natural
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7a49d57440aaadcd7a76feac8666705…
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