Hannes Siebenhandl pushed to branch wip/fendor/ghc-debug-baseline at Glasgow Haskell Compiler / GHC
Commits:
14f485ee by ARATA Mizuki at 2026-02-17T09:09:24+09:00
Support more x86 extensions: AVX-512 {BW,DQ,VL} and GFNI
Also, mark AVX-512 ER and PF as deprecated.
AVX-512 instructions can be used for certain 64-bit integer vector operations.
GFNI can be used to implement bitReverse (currently not used by NCG, but LLVM may use it).
Closes #26406
Addresses #26509
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016f79d5 by fendor at 2026-02-17T09:16:16-05:00
Hide implementation details from base exception stack traces
Ensure we hide the implementation details of the exception throwing mechanisms:
* `undefined`
* `throwSTM`
* `throw`
* `throwIO`
* `error`
The `HasCallStackBacktrace` should always have a length of exactly 1,
not showing internal implementation details in the stack trace, as these
are vastly distracting to end users.
CLC proposal [#387](https://github.com/haskell/core-libraries-committee/issues/387)
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4f2840f2 by Brian J. Cardiff at 2026-02-17T17:04:08-05:00
configure: Accept happy-2.2
In Jan 2026 happy-2.2 was released. The most sensible change is https://github.com/haskell/happy/issues/335 which didn't trigger in a fresh build
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10b4d364 by Duncan Coutts at 2026-02-17T17:04:52-05:00
Fix errors in the documentation of the eventlog STOP_THREAD status codes
Fix the code for BlockedOnMsgThrowTo.
Document all the known historical warts.
Fixes issue #26867
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c5e15b8b by Phil de Joux at 2026-02-18T05:07:36-05:00
haddock: use snippets for all list examples
- generate snippet output for docs
- reduce font size to better fit snippets
- Use only directive to guard html snippets
- Add latex snippets for lists
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d388bac1 by Phil de Joux at 2026-02-18T05:07:36-05:00
haddock: Place the snippet input and output together
- Put the output seemingly inside the example box
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016fa306 by Samuel Thibault at 2026-02-18T05:08:35-05:00
Fix linking against libm by moving the -lm option
For those systems that need -lm for getting math functions, this is
currently added on the link line very early, before the object files being
linked together. Newer toolchains enable --as-needed by default, which means
-lm is ignored at that point because no object requires a math function
yet. With such toolchains, we thus have to add -lm after the objects, so the
linker actually includes libm in the link.
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68bd0805 by Teo Camarasu at 2026-02-18T05:09:19-05:00
ghc-internal: Move GHC.Internal.Data.Bool to base
This is a tiny module that only defines bool :: Bool -> a -> a -> a. We can just move this to base and delete it from ghc-internal. If we want this functionality there we can just use a case statement or if-then expression.
Resolves 26865
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4c40df3d by fendor at 2026-02-20T10:24:48-05:00
Add optional `SrcLoc` to `StackAnnotation` class
`StackAnnotation`s give access to an optional `SrcLoc` field that
user-added stack annotations can use to provide better backtraces in both error
messages and when decoding the callstack.
We update builtin stack annotations such as `StringAnnotation` and
`ShowAnnotation` to also capture the `SrcLoc` of the current `CallStack`
to improve backtraces by default (if stack annotations are used).
This change is backwards compatible with GHC 9.14.1.
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fd9aaa28 by Simon Hengel at 2026-02-20T10:25:33-05:00
docs: Fix grammar in explicit_namespaces.rst
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44354255 by Vo Minh Thu at 2026-02-20T18:53:06-05:00
GHCi: add a :version command.
This looks like:
ghci> :version
GHCi, version 9.11.20240322
This closes #24576.
Co-Author: Markus Läll
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eab3dbba by Andreas Klebinger at 2026-02-20T18:53:51-05:00
hadrian/build-cabal: Better respect and utilize -j
* We now respect -j<n> for the cabal invocation to build hadrian rather
than hardcoding -j
* We use the --semaphore flag to ensure cabal/ghc build the hadrian
executable in parallel using the -jsem mechanism.
Saves 10-15s on fresh builds for me.
Fixes #26876
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17839248 by Teo Camarasu at 2026-02-24T08:36:03-05:00
ghc-internal: avoid depending on GHC.Internal.Control.Monad.Fix
This module contains the definition of MonadFix, since we want an
instance for IO, that instance requires a lot of machinery and we want
to avoid an orphan instance, this will naturally be quite high up in the
dependency graph.
So we want to avoid other modules depending on it as far as possible.
On Windows, the IO manager depends on the RTSFlags type, which
transtively depends on MonadFix. We refactor things to avoid this
dependency, which would have caused a regression.
Resolves #26875
Metric Decrease:
T12227
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fa88d09a by Wolfgang Jeltsch at 2026-02-24T08:36:47-05:00
Refine the imports of `System.IO.OS`
Commit 68bd08055594b8cbf6148a72d108786deb6c12a1 replaced the
`GHC.Internal.Data.Bool` import by a `GHC.Internal.Base` import.
However, while the `GHC.Internal.Data.Bool` import was conditional and
partial, the `GHC.Internal.Base` import is unconditional and total. As a
result, the import list is not tuned to import only the necessary bits
anymore, and furthermore GHC emits a lot of warnings about redundant
imports.
This commit makes the `GHC.Internal.Base` import conditional and partial
in the same way that the `GHC.Internal.Data.Bool` import was.
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c951fef1 by Cheng Shao at 2026-02-25T20:58:28+00:00
wasm: add /assets endpoint to serve user-specified assets
This patch adds an `/assets` endpoint to the wasm dyld http server, so
that users can also fetch assets from the same host with sensible
default MIME types, without needing a separate http server for assets
that also introduces CORS headaches:
- A `-fghci-browser-assets-dir` driver flag is added to specify the
assets root directory (defaults to `$PWD`)
- The dyld http server fetches `mime-db` on demand and uses it as
source of truth for mime types.
Closes #26951.
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dde22f97 by Sylvain Henry at 2026-02-26T13:14:03-05:00
Fix -fcheck-prim-bounds for non constant args (#26958)
Previously we were only checking bounds for constant (literal)
arguments!
I've refactored the code to simplify the generation of out-of-line Cmm
code for the primop composed of some inline code + some call to an
external Cmm function.
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bd3eba86 by Vladislav Zavialov at 2026-02-27T05:48:01-05:00
Check for negative type literals in the type checker (#26861)
GHC disallows negative type literals (e.g., -1), as tested by T8306 and
T8412. This check is currently performed in the renamer:
rnHsTyLit tyLit@(HsNumTy x i) = do
when (i < 0) $
addErr $ TcRnNegativeNumTypeLiteral tyLit
However, this check can be bypassed using RequiredTypeArguments
(see the new test case T26861). Prior to this patch, such programs
caused the compiler to hang instead of reporting a proper error.
This patch addresses the issue by adding an equivalent check in
the type checker, namely in tcHsType.
The diff is deliberately minimal to facilitate backporting. A more
comprehensive rework of HsTyLit is planned for a separate commit.
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faf14e0c by Vladislav Zavialov at 2026-02-27T05:48:45-05:00
Consistent pretty-printing of HsString, HsIsString, HsStrTy
Factor out a helper to pretty-print string literals, thus fixing newline
handling for overloaded string literals and type literals.
Test cases: T26860ppr T26860ppr_overloaded T26860ppr_tylit
Follow up to ddf1434ff9bb08cfef3c93f23de6b83ec698aa27
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f108a972 by Arnaud Spiwack at 2026-02-27T12:53:01-05:00
Make list comprehension completely non-linear
Fixes #25081
From the note:
The usefulness of list comprehension in conjunction with linear types is dubious.
After all, statements are made to be run many times, for instance in
```haskell
[u | y <- [0,1], stmts]
```
both `u` and `stmts` are going to be run several times.
In principle, though, there are some position in a monad comprehension
expression which could be considered linear. We could try and make it so that
these positions are considered linear by the typechecker, but in practice the
desugarer doesn't take enough care to ensure that these are indeed desugared to
linear sites. We tried in the past, and it turned out that we'd miss a
desugaring corner case (#25772).
Until there's a demand for this very specific improvement, let's instead be
conservative, and consider list comprehension to be completely non-linear.
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ae799cab by Simon Jakobi at 2026-02-27T12:53:54-05:00
PmAltConSet: Use Data.Set instead of Data.Map
...to store `PmLit`s.
The Map was only used to map keys to themselves.
Changing the Map to a Set saves a Word of memory per entry.
Resolves #26756.
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dcd7819c by Vladislav Zavialov at 2026-02-27T18:46:03-05:00
Drop HsTyLit in favor of HsLit (#26862, #25121)
This patch is a small step towards unification of HsExpr and HsType,
taking care of literals (HsLit) and type literals (HsTyLit).
Additionally, it improves error messages for unsupported type literals,
such as unboxed or fractional literals (test cases: T26862, T26862_th).
Changes to the AST:
* Use HsLit where HsTyLit was previously used
* Use HsChar where HsCharTy was previously used
* Use HsString where HsStrTy was previously used
* Use HsNatural (NEW) where HsNumTy was previously used
* Use HsDouble (NEW) to represent unsupported fractional type literals
Changes to logic:
* Parse unboxed and fractional type literals (to be rejected later)
* Drop the check for negative literals in the renamer (rnHsTyLit)
in favor of checking in the type checker (tc_hs_lit_ty)
* Check for invalid type literals in TH (repTyLit) and report
unrepresentable literals with ThUnsupportedTyLit
* Allow negative type literals in TH (numTyLit). This is fine as
these will be taken care of at splice time (test case: T8306_th)
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c927954f by Vladislav Zavialov at 2026-02-27T18:46:50-05:00
Increase test coverage of diagnostics
Add test cases for the previously untested diagnostics:
[GHC-01239] PsErrIfInFunAppExpr
[GHC-04807] PsErrProcInFunAppExpr
[GHC-08195] PsErrInvalidRecordCon
[GHC-16863] PsErrUnsupportedBoxedSumPat
[GHC-18910] PsErrSemiColonsInCondCmd
[GHC-24737] PsErrInvalidWhereBindInPatSynDecl
[GHC-25037] PsErrCaseInFunAppExpr
[GHC-25078] PsErrPrecedenceOutOfRange
[GHC-28021] PsErrRecordSyntaxInPatSynDecl
[GHC-35827] TcRnNonOverloadedSpecialisePragma
[GHC-40845] PsErrUnpackDataCon
[GHC-45106] PsErrInvalidInfixHole
[GHC-50396] PsErrInvalidRuleActivationMarker
[GHC-63930] MultiWayIfWithoutAlts
[GHC-65536] PsErrNoSingleWhereBindInPatSynDecl
[GHC-67630] PsErrMDoInFunAppExpr
[GHC-70526] PsErrLetCmdInFunAppCmd
[GHC-77808] PsErrDoCmdInFunAppCmd
[GHC-86934] ClassPE
[GHC-90355] PsErrLetInFunAppExpr
[GHC-91745] CasesExprWithoutAlts
[GHC-92971] PsErrCaseCmdInFunAppCmd
[GHC-95644] PsErrBangPatWithoutSpace
[GHC-97005] PsErrIfCmdInFunAppCmd
Remove unused error constructors:
[GHC-44524] PsErrExpectedHyphen
[GHC-91382] TcRnIllegalKindSignature
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3a9470fd by Torsten Schmits at 2026-02-27T18:47:34-05:00
Avoid expensive computation for debug logging in `mergeDatabases` when log level is low
This computed and traversed a set intersection for every single
dependency unconditionally.
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ea4c2cbd by Brandon Chinn at 2026-02-27T16:22:38-08:00
Implement QualifiedStrings (#26503)
See Note [Implementation of QualifiedStrings]
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08bc245b by sheaf at 2026-03-01T11:11:54-05:00
Clean up join points, casts & ticks
This commit shores up the logic dealing with casts and ticks occurring
in between a join point binding and a jump.
Fixes #26642 #26929 #26693
Makes progress on #14610 #26157 #26422
Changes:
- Remove 'GHC.Types.Tickish.TickishScoping' in favour of simpler
predicates 'tickishHasNoScope'/'tickishHasSoftScope', as things were
before commit 993975d3. This makes the code easier to read and
document (fewer indirections).
- Introduce 'canCollectArgsThroughTick' for consistent handling of
ticks around PrimOps and other 'Id's that cannot be eta-reduced.
See overhauled Note [Ticks and mandatory eta expansion].
- New Note [JoinId vs TailCallInfo] in GHC.Core.SimpleOpt that explains
robustness of JoinId vs fragility of TailCallInfo.
- Allow casts/non-soft-scoped ticks to occur in between a join point
binder and a jump, but only in Core Prep.
See Note [Join points, casts, and ticks] and
Note [Join points, casts, and ticks... in Core Prep]
in GHC.Core.Opt.Simplify.Iteration.
Also update Core Lint to account for this.
See Note [Linting join points with casts or ticks] in GHC.Core.Lint.
- Update 'GHC.Core.Utils.mergeCaseAlts' to avoid pushing a cast in
between a join point binding and its jumps. This fixes #26642.
See the new (MC5) and (MC6) in Note [Merge Nested Cases].
- Update float out to properly handle source note ticks. They are now
properly floated out instead of being discarded.
This increases the number of ticks in certain tests with -g.
Test cases: T26642 and TrickyJoins.
Metric increase due to more source note ticks with -g:
-------------------------
Metric Increase:
libdir
size_hello_artifact
size_hello_unicode
-------------------------
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476c4cdf by Sean D. Gillespie at 2026-03-02T10:14:37-05:00
Add SIMD absolute value on x86 and LLVM
On x86, absolute value of 32 bits or less is implemented with
PABSB/PABSW/PABSD if SSSE3 is available. Otherwise, there is a fallback
for SSE2. For 64 bit integers it uses VPABSQ, required by AVX-512VL,
with fallbacks for SSE4.2 and SSE2.
There is no dedicated instruction for floating point absolute value on
x86, so it is simulated using bitwise AND.
Absolute value for signed integers and floats are implemented by the
"llvm.abs/llvm.fabs" standard library intrinsics. This implementation
uses MachOps constructors, unlike non-vector floating point absolute
value, which uses CallishMachOps.
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709448c0 by Sean D. Gillespie at 2026-03-02T10:14:46-05:00
Add SIMD floating point square root
On x86, this is implemented with the SQRTPS and SQRTPD instructions. On
LLVM, it uses the sqrt library intrinstic.
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0deadf66 by Sean D. Gillespie at 2026-03-02T10:14:47-05:00
Improve error message for SIMD on aarch64
When encountering vector literals on aarch64, previously it would
throw:
<no location info>: error:
panic! (the 'impossible' happened)
GHC version 9.15.20251219:
getRegister' (CmmLit:CmmVec):
Now it is more consistent with the other vector operations:
<no location info>: error:
sorry! (unimplemented feature or known bug)
GHC version 9.15.20251219:
SIMD operations on AArch64 currently require the LLVM backend
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7d64031b by Vladislav Zavialov at 2026-03-03T11:09:28-05:00
Replace maybeAddSpace with spaceIfSingleQuote
Simplify pretty-printing of HsTypes by using spaceIfSingleQuote.
This allows us to drop the unwieldy lhsTypeHasLeadingPromotionQuote
helper function.
Follow-up to 178c1fd830c78377ef5d338406a41e1d8eb5f0da
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598db847 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00
Correct `hIsReadable` and `hIsWritable` for duplex handles
This contribution implements CLC proposal #371. It changes `hIsReadable`
and `hIsWritable` such that they always throw a respective exception
when encountering a closed or semi-closed handle, not just in the case
of a file handle.
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b90201e5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00
Document `SemiClosedHandle`
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c9df72b5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00
Tell users what “semi-closed” means for duplex handles
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a8aa1868 by Ilias Tsitsimpis at 2026-03-06T06:26:29-05:00
Fix determinism of linker arguments
The switch from Data.Map to UniqMap in 3b5be05ac29 introduced
non-determinism in the order of packages passed to the linker.
This resulted in non-reproducible builds where the DT_NEEDED entries in
dynamic libraries were ordered differently across builds.
Fix the regression by explicitly sorting the package list derived from
UniqMap.
Fixes #26838
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9b64ad3a by Matthew Pickering at 2026-03-06T06:27:16-05:00
determinism: Use a deterministic renaming when writing bytecode files
Now when writing the bytecode file, a counter and substitution are used
to provide deterministic keys to local variables (rather than relying on
uniques). This change ensures that `.gbc` are produced
deterministically.
Fixes #26499
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d29800e0 by Teo Camarasu at 2026-03-06T06:28:46-05:00
ghc-internal: delete Version hs-boot loop
Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module.
Resolves #26940
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ad25af90 by Sylvain Henry at 2026-03-06T06:30:33-05:00
Linker: implement support for COMMON symbols (#6107)
Add some support for COMMON symbols. We don't support common symbols
having different sizes where the larger one is allocated after the
smaller one. The linker will fail with an appropriate error message if
it happens.
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3b59f158 by Cheng Shao at 2026-03-06T06:31:16-05:00
compiler: fix redundant import of GHC.Hs.Lit
This patch removes a redundant import of `GHC.Hs.Lit` which causes a
ghc build failure with validate flavours when bootstrapping from 9.14.
Fixes #26972.
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148d36f3 by Cheng Shao at 2026-03-06T06:32:01-05:00
compiler: avoid unneeded traversals in GHC.Unit.State
Following !15591, this patch avoids unneeded traversals in
`reportCycles`/`reportUnusable` when log verbosity is below given
threshold. Also applies `logVerbAtLeast` when appropriate.
Co-authored-by: Codex
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7e31367c by Cheng Shao at 2026-03-06T06:32:46-05:00
ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool
This patch fixes redundant import in
`GHC.Internal.Event.Windows.ManagedThreadPool` that causes a
compilation error when building windows target with validate flavours
and bootstrapping from 9.14. Fixes #26976.
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fc8b8e27 by sheaf at 2026-03-06T06:33:28-05:00
System.Info.fullCompilerVersion: add 'since' annot
Fixes #26973
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c8238375 by Sylvain Henry at 2026-03-06T06:34:23-05:00
Hadrian: deprecate --bignum and automatically enable +native_bignum for JS
Deprecate --bignum=... to select the bignum backend. It's only used to
select the native backend, and this can be done with the +native_bignum
flavour transformer.
Additionally, we automatically enable +native_bignum for the JS target
because the GMP backend isn't supported.
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a3ac7074 by Sylvain Henry at 2026-03-06T06:35:17-05:00
JS: fix putEnum/fromEnum (#24593)
Don't go through Word16 when serializing Enums.
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0b36e96c by Andreas Klebinger at 2026-03-06T06:35:58-05:00
Docs: Document -fworker-wrapper-cbv default setting.
Fixes #26841
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eca445e7 by mangoiv at 2026-03-07T05:02:36-05:00
drop deb9/10 from CI, add deb13
debian 9 and 10 are end of life, hence we drop them
from our CI, but we do add debian 13. Jobs that were
previously run on 9 and 10 run on 13, too, jobs that
were run on 10, are run on 11 now. Jobs that were
previously run on debian 12 are run on debian 13 now.
This MR also updates hadrian's bootstrap plans for that
reason.
Metric Decrease:
T9872d
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12f8b829 by Luite Stegeman at 2026-03-07T05:03:33-05:00
Fix GHC.Internal.Prim haddock
Haddock used to parse Haskell source to generate documentation,
but switched to using interface files instead. This broke documentation
of the GHC.Internal.Prim module, since it's a wired-in interface that
didn't provide a document structure.
This patch adds the missing document structure and updates genprimopcode
to make the section headers and descriptions available.
fixes #26954
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f87e5e57 by Luite Stegeman at 2026-03-07T05:03:33-05:00
Remove obsolete --make-haskell-source from genprimopcode
Now that haddock uses the wired-in interface for GHC.Internal.Prim,
the generated Haskell source file is no longer needed. Remove the
--make-haskell-source code generator from genprimopcode and replace
the generated GHC/Internal/Prim.hs with a minimal static source file.
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4a7ddc7b by Sylvain Henry at 2026-03-07T05:04:59-05:00
JS: fix linking of exposed but non-preload units (#24886)
Units exposed in the unit database but not explicitly passed on the
command-line were not considered by the JS linker. This isn't an issue
for cabal which passes every unit explicitly but it is an issue when
using GHC directly (cf T24886 test).
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689aafcd by mangoiv at 2026-03-07T05:05:52-05:00
testsuite: double foundation timeout multiplier
The runtime timeout in the foundation test was regularly hit by code
generated by the wasm backend - we increase the timout since the high
runtime is expected on the wasm backend for this rather complex test.
Resolves #26938
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a46a1bb1 by Cheng Shao at 2026-03-09T04:50:30-04:00
compiler: add myCapabilityExpr to GHC.Cmm.Utils
This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is
computed from `BaseReg`. It's convenient for codegen logic where one
needs to pass the current Capability's pointer.
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4afc65b1 by Cheng Shao at 2026-03-09T04:50:30-04:00
compiler: lower tryPutMVar# into a ccall directly
This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it
completely and making the compiler lower `tryPutMVar#` into a ccall to
`performTryPutMVar` directly, without landing into an intermediate C
or Cmm function. `performTryPutMVar` is promoted to a public RTS
function with default visibility, and the compiler lowering logic
takes into account the C ABI of `performTryPutMVar` and converts from
C Bool to primop's `Int#` result properly.
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9e3d6a58 by Simon Hengel at 2026-03-09T04:51:15-04:00
Don't use #line in haddocks
This confuses the parser. Haddock output is unaffected by this change.
(read: this still produces the same documentation)
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f4e8fec2 by Wolfgang Jeltsch at 2026-03-09T04:52:01-04:00
Remove in-package dependencies on `GHC.Internal.System.IO`
This contribution eliminates all dependencies on
`GHC.Internal.System.IO` from within `ghc-internal`. It comprises the
following changes:
* Make `GHC.Internal.Fingerprint` independent of I/O support
* Tighten the dependencies of `GHC.Internal.Data.Version`
* Tighten the dependencies of `GHC.Internal.TH.Monad`
* Tighten the dependencies of `GHCi.Helpers`
* Move some code that needs `System.IO` to `template-haskell`
* Move the `GHC.ResponseFile` implementation into `base`
* Move the `System.Exit` implementation into `base`
* Move the `System.IO.OS` implementation into `base`
Metric Decrease:
size_hello_artifact
size_hello_artifact_gzip
size_hello_unicode
size_hello_unicode_gzip
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91df4c82 by Sylvain Henry at 2026-03-09T04:53:20-04:00
T18832: fix Windows CI failure by dropping removeDirectoryRecursive
On Windows, open file handles prevent deletion. After killThread, the
closer thread may not have called hClose yet, causing removeDirectoryRecursive
to fail with "permission denied". The test harness cleans up the run
directory anyway, so the call is redundant.
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d7fe9671 by Cheng Shao at 2026-03-09T04:54:04-04:00
compiler: fix redundant import in GHC.StgToJS.Object
This patch fixes a redundant import in GHC.StgToJS.Object that causes
a build failure when compiling head from 9.14 with validate flavours.
Fixes #26991.
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0bfd29c3 by Cheng Shao at 2026-03-09T04:54:46-04:00
wasm: fix `Illegal foreign declaration` failure when ghci loads modules with JSFFI exports
This patch fixes a wasm ghci error when loading modules with JSFFI
exports; the `backendValidityOfCExport` check in `tcCheckFEType`
should only makes sense and should be performed when not checking the
JavaScript calling convention; otherwise, when the calling convention
is JavaScript, the codegen logic should be trusted to backends that
actually make use of it. Fixes #26998.
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e659610c by Duncan Coutts at 2026-03-09T12:08:35-04:00
Apply NOINLINE pragmas to generated Typeable bindings
For context, see the existing Note [Grand plan for Typeable]
and the Note [NOINLINE on generated Typeable bindings] added in the
subsequent commit.
This is about reducing the number of exported top level names and
unfoldings, which reduces interface file sizes and reduces the number of
global/dynamic linker symbols.
Also accept the changed test output and metric decreases.
Tests that record the phase output for type checking or for simplifier
end up with different output: the generated bindings now have an
Inline [~] annotation, and many top level names are now local rather
than module-prefixed for export.
Also accept the numerous metric decreases in compile_time/bytes
allocated, and a few in compile_time/max_bytes_used.
There's also one instance of a decrease in runtime/max_bytes_used but
it's a ghci-way test and so presumably the reason is that it loads
smaller .hi files and/or links fewer symbols.
-------------------------
Metric Decrease:
CoOpt_Singletons
MultiLayerModulesTH_OneShot
MultilineStringsPerf
T10421
T10547
T12150
T12227
T12234
T12425
T13035
T13056
T13253
T13253-spj
T15304
T15703
T16875
T17836b
T17977b
T18140
T18223
T18282
T18304
T18698a
T18698b
T18730
T18923
T20049
T21839c
T24471
T24582
T24984
T3064
T4029
T5030
T5642
T5837
T6048
T9020
T9198
T9961
TcPlugin_RewritePerf
WWRec
hard_hole_fits
mhu-perf
-------------------------
- - - - -
67df5161 by Duncan Coutts at 2026-03-09T12:08:35-04:00
Add documentation Note [NOINLINE on generated Typeable bindings]
and refer to it from the code and existing documentation.
- - - - -
c4ad6167 by Duncan Coutts at 2026-03-09T12:08:35-04:00
Switch existing note to "named wrinkle" style, (GPT1)..(GPT7)
GPT = Grand plan for Typeable
- - - - -
dc84f8e2 by Cheng Shao at 2026-03-09T12:09:21-04:00
ci: only build deb13 for validate pipeline aarch64-linux jobs
This patch drops the redundant aarch64-linux deb12 job from validate pipelines
and only keeps deb13; it's still built in nightly/release pipelines. Closes #27004.
- - - - -
23a50772 by Rajkumar Natarajan at 2026-03-10T14:11:37-04:00
chore: Merge GHC.Internal.TH.Quote into GHC.Internal.TH.Monad
Move the QuasiQuoter datatype from GHC.Internal.TH.Quote to
GHC.Internal.TH.Monad and delete the Quote module.
Update submodule template-haskell-quasiquoter to use the merged
upstream version that imports from the correct module.
Co-authored-by: Cursor
- - - - -
a2bb6fc3 by Simon Jakobi at 2026-03-10T14:12:23-04:00
Add regression test for #16122
- - - - -
604e1180 by Cheng Shao at 2026-03-11T15:00:42-04:00
hadrian: remove the broken bench flavour
This patch removes the bench flavour from hadrian which has been
broken for years and not used for actual benchmarking (for which
`perf`/`release` is used instead). Closes #26825.
- - - - -
c3e64915 by Simon Jakobi at 2026-03-11T15:01:31-04:00
Add regression test for #18186
The original TypeInType language extension is replaced with
DataKinds+PolyKinds for compatibility.
Closes #18186.
- - - - -
664996c7 by Andreas Klebinger at 2026-03-11T15:02:16-04:00
Bump nofib submodule.
We accrued a number of nofib fixes we want to have here.
- - - - -
517cf64e by Simon Jakobi at 2026-03-11T15:03:03-04:00
Add regression test for #15907
Closes #15907.
- - - - -
fff362cf by Simon Jakobi at 2026-03-11T15:03:49-04:00
Ensure T14272 is run in optasm way
Closes #16539.
- - - - -
ec81ec2c by Simon Jakobi at 2026-03-11T15:03:49-04:00
Add regression test for #24632
Closes #24632.
- - - - -
cefec47b by Simon Jakobi at 2026-03-11T15:03:50-04:00
Fix module name of T9675: T6975 -> T9675
- - - - -
d3690ae8 by Andreas Klebinger at 2026-03-11T15:04:31-04:00
User guide: Clarify phase control on INLINEABLE[foo] pragmas.
Fixes #26851
- - - - -
e7054934 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #12694
Closes #12694.
- - - - -
4756d9f6 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #16275
Closes #16275.
- - - - -
34b7e2c1 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #14908
Closes #14908.
- - - - -
4243db3d by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #14151
Closes #14151.
- - - - -
0e9f1453 by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #12640
Closes #12640.
- - - - -
ae606c7f by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #15588
Closes #15588.
- - - - -
5a38ce4e by Simon Jakobi at 2026-03-11T15:05:16-04:00
Add regression test for #9445
Closes #9445.
- - - - -
d054b467 by Cheng Shao at 2026-03-11T15:05:59-04:00
compiler: implement string interning logic for BCONPtrFS
This patch adds a `FastStringEnv`-based cache of `MallocStrings`
requests to `Interp`, so that when we load bytecode with many
breakpoints that share the same module names & unit ids, we reuse the
allocated remote pointers instead of issuing duplicte `MallocStrings`
requests and bloating the C heap. Closes #26995.
- - - - -
b85a0293 by Simon Jakobi at 2026-03-11T15:06:41-04:00
Add perf test for #1216
Closes #1216.
- - - - -
cd7f7420 by Sylvain Henry at 2026-03-11T15:07:58-04:00
JS: check that tuple constructors are linked (#23709)
Test js-mk_tup was failing before because tuple constructors weren't
linked in. It's no longer an issue after the linker fixes.
- - - - -
d57f01a4 by Matthew Pickering at 2026-03-11T15:08:40-04:00
testsuite: Add test for foreign import prim with unboxed tuple return
This commit just adds a test that foreign import prim works with unboxed
sums.
- - - - -
23d111ce by Matthew Pickering at 2026-03-11T15:08:41-04:00
Return a valid pointer in advanceStackFrameLocationzh
When there is no next stack chunk, `advanceStackFrameLocationzh` used to
return NULL in the pointer-typed StackSnapshot# result slot.
Even though the caller treats that case as "no next frame", the result is
still materialized in a GC-visible pointer slot. If a GC observes the raw
NULL there, stack decoding can crash.
Fix this by ensuring the dead pointer slot contains a valid closure
pointer. Also make the optional result explicit by returning an unboxed
sum instead of a tuple with a separate tag.
Fixes #27009
- - - - -
4c58a3ae by Cheng Shao at 2026-03-11T15:09:22-04:00
hadrian: build profiled dynamic objects with -dynamic-too
This patch enables hadrian to build profiled dynamic objects with
`-dynamic-too`, addressing a build parallelism bottleneck in release
pipelines. Closes #27010.
- - - - -
870243e4 by Zubin Duggal at 2026-03-12T17:33:28+05:30
DmdAnal: Take stable unfoldings into account when determining argument demands
Previously, demand analysis only looked at the RHS to compute argument demands.
If the optimised RHS discarded uses of an argument that the stable unfolding
still needed, it would be incorrectly marked absent. Worker/wrapper would then
replace it with LitRubbish, and inlining the stable unfolding would use the
rubbish value, causing a segfault.
To fix, we introduce addUnfoldingDemands which analyses the stable unfolding
with dmdAnal and combines its DmdType with the RHS's via the new `maxDmdType`
which combines the demands of the stable unfolding with the rhs, so we can avoid
any situation where we give an absent demand to something which is still used
by the stable unfolding.
Fixes #26416.
- - - - -
669d09f9 by Cheng Shao at 2026-03-13T15:06:07-04:00
hadrian: remove redundant library/rts ways definitions from stock flavours
This patch removes redundant library/rts ways definitions from stock
flavours in hadrian; they can be replaced by applying appropriate
filters on `defaultFlavour`.
- - - - -
a27dc081 by Teo Camarasu at 2026-03-13T15:06:51-04:00
ghc-internal: move bits Weak of finalizer interface to base
We move parts of the Weak finalizer interface to `base` only the parts
that the RTS needs to know about are kept in `ghc-internal`.
This lets us then prune our imports somewhat and get rid of some SOURCE imports.
Resolves #26985
- - - - -
6eef855b by Sylvain Henry at 2026-03-13T15:08:18-04:00
Stg/Unarise: constant-folding during unarisation (#25650)
When building an unboxed sum from a literal argument, mkUbxSum
previously emitted a runtime cast via `case primop [lit] of var -> ...`.
This wrapper prevented GHC from recognising the result as a static
StgRhsCon, causing top-level closures to be allocated as thunks instead
of being statically allocated.
Fix: try to perform the numeric literal cast at compile time using
mkLitNumberWrap (wrapping semantics). If successful, return the cast
literal directly with an identity wrapper (no case expression). The
runtime cast path is kept as fallback for non-literal arguments.
Test: codeGen/should_compile/T25650
- - - - -
905f8723 by Simon Jakobi at 2026-03-13T15:09:09-04:00
Add regression test for #2057
Test that GHC stops after an interface-file error instead of
continuing into the linker.
The test constructs a stale package dependency on purpose. `pkgB` is compiled
against one version of package `A`, then the same unit id is replaced by an
incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`,
finds an unfolding that still mentions the old `A`, and should fail while
loading interfaces.
Closes #2057.
Assisted-by: Codex
- - - - -
a13245a9 by Sylvain Henry at 2026-03-13T15:10:06-04:00
JS: fix recompilation avoidance (#23013)
- we were checking the mtime of the *.jsexe directory, not of a file
- we were not computing the PkgsLoaded at all
- - - - -
07442653 by Cheng Shao at 2026-03-13T15:10:51-04:00
hadrian: bump index state & bootstrap plans
This patch bumps hadrian index state & bootstrap plans:
- The updated index state allows bootstrapping from 9.14 without cabal
allow-newer hacks
- The updated bootstrap plans all contain shake-0.19.9 containing
important bugfix, allowing a subsequent patch to bump shake bound to
ensure the bugfix is included
- ghc 9.14.1 bootstrap plan is added
- - - - -
fdc1dbad by Cheng Shao at 2026-03-13T15:10:51-04:00
ci: add ghc 9.14.1 to bootstrap matrix
This patch adds ghc 9.14.1 to bootstrap matrix, so that we test
bootstrapping from ghc 9.14.1.
- - - - -
91916079 by Sylvain Henry at 2026-03-13T15:11:43-04:00
T17912: wait for opener thread to block before killing it (#24739)
Instead of a fixed 1000ms delay, poll threadStatus until the opener
thread is in BlockedOnForeignCall, ensuring killThread only fires once
the thread is provably inside the blocking open() syscall. This prevents
the test from accidentally passing on Windows due to scheduling races.
- - - - -
baa4ebb4 by Cheng Shao at 2026-03-13T15:12:26-04:00
template-haskell: fix redundant import in Language.Haskell.TH.Quote
This patch fixes a redundant import in `Language.Haskell.TH.Quote`
that causes a ghc build failure when bootstrapping from 9.14 with
validate flavours. Fixes #27014.
- - - - -
02e68a86 by Brandon Simmons at 2026-03-13T15:13:19-04:00
Add a cumulative gc_sync_elapsed_ns counter to GHC.Internal.Stats
This makes it possible to get an accurate view of time spent in sync
phase when using prometheus-style sampling. Previously this was only
available for the most recent GC.
This intentionally leaves GHC.Stats API unchanged since it is marked as
deprecated, and API changes there require CLC approval.
Fixes #26944
- - - - -
a18fa3c1 by Cheng Shao at 2026-03-14T05:12:14-04:00
configure: make $LLVMAS default to $CC when $CcLlvmBackend is YES
This patch changes the $LLVMAS detection logic in configure so that
when it's not manually specified by the user, it defaults to $CC if
$CcLlvmBackend is YES. It's a more sensible default than auto-detected
clang from the environment, especially when cross-compiling, $CC as
the cross target's LLVM assembler is more compatible with the use case
than the system-wide clang. Fixes #26769.
- - - - -
3774086e by Matthew Pickering at 2026-03-14T05:13:00-04:00
exceptions: annotate onException continuation with WhileHandling
Before this patch, an exception thrown in the `onException` handler
would loose track of where the original exception was thrown.
```
import Control.Exception
main :: IO ()
main = failingAction `onException` failingCleanup
where
failingAction = throwIO (ErrorCall "outer failure")
failingCleanup = throwIO (ErrorCall "cleanup failure")
```
would report
```
T28399: Uncaught exception ghc-internal:GHC.Internal.Exception.ErrorCall:
cleanup failure
HasCallStack backtrace:
throwIO, called at T28399.hs:<line>:<column> in <package-id>:Main
```
notice that the "outer failure" exception is not present in the error
message.
With this patch, any exception thrown is in the handler is annotated
with WhileHandling. The resulting message looks like
```
T28399: Uncaught exception ghc-internal:GHC.Internal.Exception.ErrorCall:
cleanup failure
While handling outer failure
HasCallStack backtrace:
throwIO, called at T28399.hs:7:22 in main:Main
```
CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/397
Fixes #26759
- - - - -
63ae8eb3 by Andreas Klebinger at 2026-03-14T05:13:43-04:00
Fix missing profiling header for origin_thunk frame.
Fixes #27007
- - - - -
213d2c0e by Cheng Shao at 2026-03-14T05:14:28-04:00
ci: fix ci-images revision
The current ci-images revision was a commit on the WIP branch of
https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/183, and
it's not on the current ci-images master branch. This patch fixes the
image revision to use the current tip of ci-images master.
- - - - -
fc2b083f by Andreas Klebinger at 2026-03-14T05:15:14-04:00
Revert "hadrian/build-cabal: Better respect and utilize -j"
This reverts commit eab3dbba79650e6046efca79133b4c0a5257613d.
While it's neat this currently isn't well supported on all platforms.
It's time will come, but for now I'm reverting this to avoid issues for
users on slightly unconvential platforms.
This will be tracked at #26977.
- - - - -
12a706cf by Cheng Shao at 2026-03-14T16:37:54-04:00
base: fix redundant imports in GHC.Internal.Weak.Finalize
This patch fixes redundant imports in GHC.Internal.Weak.Finalize that
causes a regression in bootstrapping head from 9.14 with validate
flavours. Fixes #27026.
- - - - -
b5d39cad by Matthew Pickering at 2026-03-14T16:38:37-04:00
Use explicit syntax rather than pure
- - - - -
43638643 by Andreas Klebinger at 2026-03-15T18:15:48-04:00
Configure: Fix check for --target support in stage0 CC
The check FP_PROG_CC_LINKER_TARGET used $CC unconditionally to check for
--target support. However this fails for the stage0 config where the C
compiler used is not $CC but $CC_STAGE0.
Since we already pass the compiler under test into the macro I simply
changed it to use that instead.
Fixes #26999
- - - - -
18fd0df6 by Simon Hengel at 2026-03-15T18:16:33-04:00
Fix typo in recursive_do.rst
- - - - -
86bd9bfc by fendor at 2026-03-17T23:46:09-04:00
Introduce `-fimport-loaded-targets` GHCi flag
This new flag automatically adds all loaded targets to the GHCi session
by adding an `InteractiveImport` for the loaded targets.
By default, this flag is disabled, as it potentially increases memory-usage.
This interacts with the flag `-fno-load-initial-targets` as follows:
* If no module is loaded, no module is added as an interactive import.
* If a reload loads up to a module, all loaded modules are added as
interactive imports.
* Unloading modules removes them from the interactive context.
Fixes #26866 by rendering the use of a `-ghci-script` to achieve the
same thing redundant.
- - - - -
e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00
ghc-internal: Remove GHC.Internal.Data.Eq
It served no purpose other than being a re-export.
- - - - -
6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00
ghc-internal: Refine GHC.Internal.Base imports
Removed re-exports from GHC.Internal.Base. This reveals some modules
that don't actually use anything *defined* in GHC.Internal.Base, and
that can be pushed down a little in the import graph.
Replaced most imports of GHC.Internal.Base with non-wildcard imports
from modules where the identifiers are actually defined.
Part of #26834
Metric Decrease:
T5321FD
- - - - -
7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00
ci: clone, don't copy when creating the cabal cache
Also removed WINDOWS_HOST variable detected via uname - we now just
check whether the CI job has windows in its name. This works because we
only ever care about it if the respective job is not a cross job. We
also statically detect darwin cross jobs in the same way. We only ever have
darwin -> darwin cross jobs so this is enough to detect the host
reliably.
- - - - -
f8817879 by mangoiv at 2026-03-17T23:48:44-04:00
ci: mark size_hello_artifact fragile on darwin x86
The size of the x86_64 hello artifact is not stable which results in flaky testruns.
Resolves #26814
- - - - -
e34cb6da by Adam Gundry at 2026-03-20T12:20:00-04:00
ghci: Mention active language edition in startup banner
Per GHC proposal 632, this makes the GHCi startup banner include
the active language edition, plus an indication of whether this
was the default (as opposed to being explicitly selected via an
option such as `-XGHC2024`). For example:
```
$ ghci
GHCi, version 9.14.1: https://www.haskell.org/ghc/ :? for help
Using default language edition: GHC2024
ghci>
```
Fixes #26037.
- - - - -
52c3e6ba by sheaf at 2026-03-20T12:21:09-04:00
Improve incomplete record selector warnings
This commit stops GHC from emitting spurious incomplete record selector
warnings for bare selectors/projections such as .fld
There are two places we currently emit incomplete record selector
warnings:
1. In the desugarer, when we see a record selector or an occurrence
of 'getField'. Here, we can use pattern matching information to
ensure we don't give false positives.
2. In the typechecker, which might sometimes give false positives but
can emit warnings in cases that the pattern match checker would
otherwise miss.
This is explained in Note [Detecting incomplete record selectors]
in GHC.HsToCore.Pmc.
Now, we obviously don't want to emit the same error twice, and generally
we prefer (1), as those messages contain fewer false positives. So we
suppress (2) when we are sure we are going to emit (1); the logic for
doing so is in GHC.Tc.Instance.Class.warnIncompleteRecSel,
and works by looking at the CtOrigin.
Now, the issue was that this logic handled explicit record selectors as
well as overloaded record field selectors such as "x.r" (which turns
into a simple GetFieldOrigin CtOrigin), but it didn't properly handle
record projectors like ".fld" or ".fld1.fld2" (which result in other
CtOrigins such as 'RecordFieldProjectionOrigin').
To solve this problem, we re-use the 'isHasFieldOrigin' introduced in
fbdc623a (slightly adjusted).
On the way, we also had to update the desugarer with special handling
for the 'ExpandedThingTc' case in 'ds_app', to make sure that
'ds_app_var' sees all the type arguments to 'getField' in order for it
to indeed emit warnings like in (1).
Fixes #26686
- - - - -
309d7e87 by Cheng Shao at 2026-03-20T12:21:53-04:00
rts: opportunistically grow the MutableByteArray# in-place in resizeMutableByteArray#
Following !15234, this patch improves `resizeMutableByteArray#` memory
efficiency by growing the `MutableByteArray#` in-place if possible,
addressing an old todo comment here. Also adds a new test case
`resizeMutableByteArrayInPlace` that stresses this behavior.
- - - - -
7d4ef162 by Matthew Craven at 2026-03-20T12:22:47-04:00
Change representation of floating point literals
This commit changes the representation of floating point literals
throughough the compiler, in particular in Core and Cmm.
The Rational type is deficient for this purpose, dealing poorly
with NaN, +/-Infinity, and negative zero. Instead, the new module
GHC.Types.Literal.Floating uses the host Float/Double type to represent
NaNs, infinities and negative zero. It also contains a Rational
constructor, for the benefit of -fexcess-precision.
Other changes:
- Remove Note [negative zero] and related code
This also removes the restrictions on constant-folding of division
by zero, and should make any problems with NaN/Infinity more obvious.
- Use -0.0 as the additive identity for Core constant folding rules
for floating-point addition, fixing #21227.
- Manual worker-wrapper for GHC.Float.rationalToDouble. This is
intended to prevent the compiler's WW on this function from
interfering with constant-folding. This change means that we now
avoid allocating a box for the result of a 'realToFrac' call in
T10359.
- Combine floatDecodeOp and doubleDecodeOp.
This change also fixes a bug in doubleDecodeOp wherein it
would incorrectly produce an Int# instead of an Int64#
literal for the mantissa component with 64-bit targets.
- Use Float/Double for assembly immediates, and update the X86 and
PowerPC backends to properly handle special values such as NaN and
infinity.
- Allow 'rational_to' to handle zero denominators, fixing a
TODO in GHC.Core.Opt.ConstantFold.
Fixes #8364 #9811 #18897 #21227
Progress towards #26919
Metric Decrease:
T10359
Co-authored-by: sheaf
-------------------------
Metric Decrease:
T1969
T5321FD
-------------------------
- - - - -
80e2dd4f by Zubin Duggal at 2026-03-20T12:23:33-04:00
compiler/ffi: Collapse void pointer chains in capi wrappers
New gcc/clang treat -Wincompatible-pointer-types as an error by
default. Since C only allows implicit conversion from void*, not void**,
capi wrappers for functions taking e.g. abstract** would fail to compile
when the Haskell type Ptr (Ptr Abstract) was naively translated to void**.
Collapse nested void pointers to a single void* when the pointee type
has no known C representation.
Fixes #26852
- - - - -
1c50bd7b by Luite Stegeman at 2026-03-20T12:24:37-04:00
Move some functions related to pointer tagging to a separate module
- - - - -
bfd7aafd by Luite Stegeman at 2026-03-20T12:24:37-04:00
Branchless unpacking for enumeration types
Change unpacking for enumeration types to go to Word8#/Word16#/Word#
directly instead of going through an intermediate unboxed sum. This
allows us to do a branchless conversion using DataToTag and TagToEnum.
Fixes #26970
- - - - -
72b20fc0 by Luite Stegeman at 2026-03-20T12:25:30-04:00
bytecode: Carefully SLIDE off the end of a stack chunk
The SLIDE bytecode instruction was not checking for stack chunk
boundaries and could corrupt the stack underflow frame, leading
to crashes.
We add a check to use safe writes if we cross the chunk boundary
and also handle stack underflow if Sp is advanced past the underflow
frame.
fix #27001
- - - - -
2e22b43c by Cheng Shao at 2026-03-20T12:26:14-04:00
ghci: serialize BCOByteArray buffer directly when possible
This patch changes the `Binary` instances of `BCOByteArray` to
directly serialize the underlying buffer when possible, while also
taking into account the issue of host-dependent `Word` width. See
added comments and amended `Note [BCOByteArray serialization]` for
detailed explanation. Closes #27020.
- - - - -
89d9ba37 by Sylvain Henry at 2026-03-20T12:27:34-04:00
JS: replace BigInt with Number arithmetic for 32/64-bit quot/rem (#23597)
Replace BigInt-based implementations of quotWord32, remWord32,
quotRemWord32, quotRem2Word32, quotWord64, remWord64, quotInt64, and
remInt64 with pure Number (double/integer) arithmetic to avoid the
overhead of BigInt promotion.
- - - - -
ae4ddd60 by Sylvain Henry at 2026-03-20T12:28:28-04:00
Core: add constant-folding rules for Addr# eq/ne (#18032)
- - - - -
3e767f98 by Matthew Pickering at 2026-03-20T12:29:11-04:00
Use OsPath rather than FilePath in Downsweep cache
This gets us one step closure to uniformly using `OsPath` in the
compiler.
- - - - -
2c57de29 by Cheng Shao at 2026-03-20T12:29:55-04:00
hadrian: fix ghc-in-ghci flavour stage0 shared libraries
This patch fixes missing stage0 shared libraries in hadrian
ghc-in-ghci flavour, which was accidentally dropped in
669d09f950a6e88b903d9fd8a7571531774d4d5d and resulted in a regression
in HLS support on linux/macos. Fixes #27057.
- - - - -
5b1be555 by Sylvain Henry at 2026-03-20T12:30:48-04:00
JS: install rts/Types.h header file (#27033)
It was an omission, making HsFFI.h not usable with GHC using the JS
backend.
- - - - -
b883f08f by Cheng Shao at 2026-03-20T12:31:33-04:00
hadrian: don't compile RTS with -Winline
This patch removes `-Winline` from cflags when compiling the RTS,
given that:
1. It generates a huge pile of spam and hurts developer experience
2. Whether inlining happens is highly dependent on toolchains,
flavours, etc, and it's not really an issue to fix if inlining
doesn't happen; it's a hint to the C compiler anyway.
Fixes #27060.
- - - - -
333387d6 by Cheng Shao at 2026-03-20T12:31:33-04:00
hadrian: compile libffi-clib with -Wno-deprecated-declarations
This patch adds `-Wno-deprecated-declarations` to cflags of
`libffi-clib`, given that it produces noise at compile-time that
aren't really our issue to fix anyway, it's from vendored libffi
source code.
- - - - -
67c47771 by Rodrigo Mesquita at 2026-03-20T12:32:17-04:00
Expose decodeStackWithIpe from ghc-experimental
This decoding is useful to the debugger and it wasn't originally
exported as an oversight.
- - - - -
18513365 by Matthew Pickering at 2026-03-21T04:43:26-04:00
Add support for custom external interpreter commands
It can be useful for GHC API clients to implement their own external
interpreter commands.
For example, the debugger may want an efficient way to inspect the
stacks of the running threads in the external interpreter.
- - - - -
4636d906 by mangoiv at 2026-03-21T04:44:10-04:00
ci: remove obsolete fallback for old debian and ubuntu versions
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2e3a2805 by mangoiv at 2026-03-21T04:44:10-04:00
ci: drop ubuntu 18 and 20
Ubuntu 18 EOL: May 2023
Ubuntu 20 EOL: May 2025
We should probably not make another major release supporting these platforms.
Also updates the generator script.
Resolves #25876
- - - - -
de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00
rts: fix -Wcompare-distinct-pointer-types errors
This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS
which should have been caught by the `validate` flavour but was
warnings in CI due to the recent `+werror` regression.
- - - - -
b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00
ghc-internal: fix unused imports
This commit fixes unused imports in `ghc-internal` which should have
been caught by the `validate` flavour but was warnings in CI due to
the recent `+werror` regression. Fixes #26987 #27059.
- - - - -
da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00
ghci: fix unused imports
This commit fixes unused imports in `ghci` which should have been
caught by the `validate` flavour but was warnings in CI due to the
recent `+werror` regression. Fixes #26987 #27059.
- - - - -
955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00
compiler: fix unused imports in GHC.Tc.Types.Origin
This commit fixes unused imports in `GHC.Tc.Types.Origin` which should
have been caught by the `validate` flavour but was warnings in CI due
to the recent `+werror` regression. Fixes #27059.
- - - - -
3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00
hadrian: fix missing +werror in validate flavour
This patch fixes missing `+werror` in validate flavour, which was an
oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066.
- - - - -
44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00
ci: bump CACHE_REV and add the missing reminder
This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI
errors due to stale cabal cache on some runners, and also adds a
reminder to remind future maintainers. Fixes #27075.
- - - - -
2a218737 by ARATA Mizuki at 2026-03-23T11:11:39-04:00
Add 128-bit SIMD support to AArch64 NCG
Changes:
- Add `Format` field to vector-capable instructions.
These instructions will emit `vN.4s` (for example) as a operand.
- Additional constructors for `Operand`:
`OpVecLane` represents a vector lane and will be emitted as `vN.<width>[<index>]` (`vN.s[3]` for example).
`OpScalarAsVec` represents a scalar, but printed as a vector lane like `vN.<width>[0]` (`vN.s[0]` for example).
- Integer quot/rem are implemented in C, like x86.
Closes #26536
Metric Increase:
T3294
- - - - -
5d6e2be9 by ARATA Mizuki at 2026-03-23T11:11:39-04:00
AArch64 NCG: Improve code generation for floating-point and vector constants
Some floating-point constants can be directly encoded using the FMOV instruction.
Similarly, a class of vectors with same values can be encoded using FMOV, MOVI, or MVNI.
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c6d262aa by Simon Jakobi at 2026-03-23T11:12:22-04:00
Add regression test for #13729
Closes #13729.
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aa5dfe67 by Sylvain Henry at 2026-03-26T03:48:56-04:00
Check that shift values are valid
In GHC's codebase in non-DEBUG builds we silently substitute shiftL/R
with unsafeShiftL/R for performance reasons. However we were not
checking that the shift value was valid for unsafeShiftL/R, leading to
wrong computations, but only in non-DEBUG builds.
This patch adds the necessary checks and reports an error when a wrong
shift value is passed.
- - - - -
c8a7b588 by Sylvain Henry at 2026-03-26T03:48:56-04:00
Implement basic value range analysis (#25718)
Perform basic value range analysis to try to determine at compile time
the result of the application of some comparison primops (ltWord#, etc.).
This subsumes the built-in rewrite rules used previously to check if one
of the comparison argument was a bound (e.g. (x :: Word8) <= 255 is
always True). Our analysis is more powerful and handles type
conversions: e.g. word8ToWord x <= 255 is now detected as always True too.
We also use value range analysis to filter unreachable alternatives in
case-expressions. To support this, we had to allow case-expressions for
primitive types to not have a DEFAULT alternative (as was assumed before
and checked in Core lint).
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a5ec467e by ARATA Mizuki at 2026-03-26T03:49:49-04:00
rts: Align stack to 64-byte boundary in StgRun on x86
When LLVM spills AVX/AVX-512 vector registers to the stack, it requires
32-byte (__m256) or 64-byte (__m512) alignment. If the stack is not
sufficiently aligned, LLVM inserts a realignment prologue that reserves
%rbp as a frame pointer, conflicting with GHC's use of %rbp as an STG
callee-saved register and breaking the tail-call-based calling convention.
Previously, GHC worked around this by lying to LLVM about the stack
alignment and rewriting aligned vector loads/stores (VMOVDQA, VMOVAPS)
to unaligned ones (VMOVDQU, VMOVUPS) in the LLVM Mangler. This had two
problems:
- It did not extend to AVX-512, which requires 64-byte alignment. (#26595)
- When Haskell calls a C function that takes __m256/__m512 arguments on
the stack, the callee requires genuine alignment, which could cause a
segfault. (#26822)
This patch genuinely aligns the stack to 64 bytes in StgRun by saving
the original stack pointer before alignment and restoring it in
StgReturn. We now unconditionally advertise 64-byte stack alignment to
LLVM for all x86 targets, making rewriteAVX in the LLVM Mangler
unnecessary. STG_RUN_STACK_FRAME_SIZE is increased from 48 to 56 bytes
on non-Windows x86-64 to store the saved stack pointer.
Closes #26595 and #26822
Co-Authored-By: Claude Opus 4.5
- - - - -
661da815 by Teo Camarasu at 2026-03-26T03:50:33-04:00
ghc-internal: Float Generics to near top of module graph
We remove GHC.Internal.Generics from the critical path of the
`ghc-internal` module graph. GHC.Internal.Generics used to be in the
middle of the module graph, but now it is nearer the top (built later).
This change thins out the module graph and allows us to get rid of the
ByteOrder hs-boot file.
We implement this by moving Generics instances from the module where the
datatype is defined to the GHC.Internal.Generics module. This trades off
increasing the compiled size of GHC.Internal.Generics with reducing the
dependency footprint of datatype modules.
Not all instances are moved to GHC.Internal.Generics. For instance,
`GHC.Internal.Control.Monad.Fix` keeps its instance as it is one of the
very last modules compiled in `ghc-internal` and so inverting the
relationship here would risk adding GHC.Internal.Generics back onto the
critical path.
We also don't change modules that are re-exported from the `template-haskell` or `ghc-heap`.
This is done to make it easy to eventually move `Generics` to `base`
once something like #26657 is implemented.
Resolves #26930
Metric Decrease:
T21839c
- - - - -
45428f88 by sheaf at 2026-03-26T03:51:31-04:00
Avoid infinite loop in deep subsumption
This commit ensures we only unify after we recur in the deep subsumption
code in the FunTy vs non-FunTy case of GHC.Tc.Utils.Unify.tc_sub_type_deep,
to avoid falling into an infinite loop.
See the new Wrinkle [Avoiding a loop in tc_sub_type_deep] in
Note [FunTy vs non-FunTy case in tc_sub_type_deep] in GHC.Tc.Utils.Unify.
Fixes #26823
Co-authored-by: simonpj
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2823b039 by Ian Duncan at 2026-03-26T03:52:21-04:00
AArch64: fix MOVK regUsageOfInstr to mark dst as both read and written
MOVK (move with keep) modifies only a 16-bit slice of the destination
register, so the destination is both read and written. The register
allocator must know this to avoid clobbering live values. Update
regUsageOfInstr to list the destination in both src and dst sets.
No regression test: triggering the misallocation requires specific
register pressure around a MOVK sequence, which is difficult to
reliably provoke from Haskell source.
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57b7878d by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #12002
Closes #12002.
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c8f9df2d by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #12046
Closes #12046.
Co-authored-by: Andreas Klebinger
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615d72ac by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #13180
Closes #13180.
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423eebcf by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #11141
Closes #11141.
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286849a4 by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #11505
Closes #11505.
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7db149d9 by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression perf test for #13820
Closes #13820.
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e73c4adb by Simon Jakobi at 2026-03-26T03:53:07-04:00
Add regression test for #10381
Closes #10381.
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5ebcfb57 by Benjamin Maurer at 2026-03-26T03:54:02-04:00
Generate assembly on x86 for word2float (#22252)
We used to emit C function call for MO_UF_Conv primitive.
Now emits direct assembly instead.
Co-Authored-By: Sylvain Henry
Co-Authored-By: Claude Sonnet 4.6
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5b550754 by Matthew Pickering at 2026-03-26T03:54:51-04:00
rts: forward clone-stack messages after TSO migration
MSG_CLONE_STACK assumed that the target TSO was still owned by the
capability that received the message. This is not always true: the TSO
can migrate before the inbox entry is handled.
When that happened, handleCloneStackMessage could clone a live stack from
the wrong capability and use the wrong capability for allocation and
performTryPutMVar, leading to stack sanity failures such as
checkStackFrame: weird activation record found on stack.
Fix this by passing the current capability into
handleCloneStackMessage, rechecking msg->tso->cap at handling time, and
forwarding the message if the TSO has migrated. Once ownership matches,
use the executing capability consistently for cloneStack, rts_apply, and
performTryPutMVar.
Fixes #27008
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ef0a1bd2 by mangoiv at 2026-03-26T03:55:34-04:00
release tracking: adopt release tracking ticket from #16816
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a7f40fd9 by mangoiv at 2026-03-26T03:55:34-04:00
release tracking: add a release tracking ticket
Brings the information in the release tracking ticket up to date with
https://gitlab.haskell.org/ghc/ghc-hq/-/blob/main/release-management.mkd
Resolves #26691
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161d3285 by Teo Camarasu at 2026-03-26T03:56:18-04:00
Revert "Set default eventlog-flush-interval to 5s"
Flushing the eventlog forces a synchronisation of all the capabilities
and there was a worry that this might lead to a performance cost for
some highly parallel workloads.
This reverts commit 66b96e2a591d8e3d60e74af3671344dfe4061cf2.
- - - - -
36eed985 by Cheng Shao at 2026-03-26T03:57:03-04:00
ghc-boot: move GHC.Data.SmallArray to ghc-boot
This commit moves `GHC.Data.SmallArray` from the `ghc` library to
`ghc-boot`, so that it can be used by `ghci` as well:
- The `Binary` (from `ghc`) instance of `SmallArray` is moved to
`GHC.Utils.Binary`
- Util functions `replicateSmallArrayIO`, `mapSmallArrayIO`,
`mapSmallArrayM_`, `imapSmallArrayM_` , `smallArrayFromList` and
`smallArrayToList` are added
- The `Show` instance is added
- The `Binary` (from `binary`) instance is added
- - - - -
fdf828ae by Cheng Shao at 2026-03-26T03:57:03-04:00
compiler: use `Binary` instance of `BCOByteArray` for bytecode objects
This commit defines `Binary` (from `compiler`) instance of
`BCOByteArray` which serializes the underlying buffer directly, and
uses it directly in bytecode object serialization. Previously we reuse
the `Binary` (from `binary`) instance, and this change allows us to
avoid double-copying via an intermediate `ByteString` when using
`put`/`get` in `binnary`. Also see added comment for explanation.
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3bf62d0a by Cheng Shao at 2026-03-26T03:57:03-04:00
ghci: use SmallArray directly in ResolvedBCO
This patch makes ghci use `SmallArray` directly in `ResolvedBCO` when
applicable, making the memory representation more compact and reducing
marshaling overhead. Closes #27058.
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3d6492ce by Wen Kokke at 2026-03-26T03:57:53-04:00
Fix race condition between flushEventLog and start/endEventLogging.
This commit changes `flushEventLog` to acquire/release the `state_change` mutex to prevent interleaving with `startEventLogging` and `endEventLogging`. In the current RTS, `flushEventLog` _does not_ acquire this mutex, which may lead to eventlog corruption on the following interleaving:
- `startEventLogging` writes the new `EventLogWriter` to `event_log_writer`.
- `flushEventLog` flushes some events to `event_log_writer`.
- `startEventLogging` writes the eventlog header to `event_log_writer`.
This causes the eventlog to be written out in an unreadable state, with one or more events preceding the eventlog header.
This commit renames the old function to `flushEventLog_` and defines `flushEventLog` simply as:
```c
void flushEventLog(Capability **cap USED_IF_THREADS)
{
ACQUIRE_LOCK(&state_change_mutex);
flushEventLog_(cap);
RELEASE_LOCK(&state_change_mutex);
}
```
The old function is still needed internally within the compilation unit, where it is used in `endEventLogging` in a context where the `state_change` mutex has already been acquired. I've chosen to mark `flushEventLog_` as static and let other uses of `flushEventLog` within the RTS refer to the new version. There is one use in `hs_init_ghc` via `flushTrace`, where the new locking behaviour should be harmless, and one use in `handle_tick`, which I believe was likely vulnerable to the same race condition, so the new locking behaviour is desirable.
I have not added a test. The behaviour is highly non-deterministic and requires a program that concurrently calls `flushEventLog` and `startEventLogging`/`endEventLogging`. I encountered the issue while developing `eventlog-socket` and within that context have verified that my patch likely addresses the issue: a test that used to fail within the first dozen or so runs now has been running on repeat for several hours.
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7b9a75f0 by Phil Hazelden at 2026-03-26T03:58:37-04:00
Fix build with werror on glibc 2.43.
We've been defining `_XOPEN_SOURCE` and `_POSIX_C_SOURCE` to the same
values as defined in glibc prior to 2.43. But in 2.43, glibc changes
them to new values, which means we get a warning when redefining them.
By `#undef`ing them first, we no longer get a warning.
Closes #27076.
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fe6e76c5 by Tobias Haslop at 2026-03-26T03:59:30-04:00
Fix broken Haddock link to Bifunctor class in description of Functor class
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404b71c1 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Fix assert in Interpreter.c
If we skip exactly the number of words on the stack we end up on
the first word in the next chunk.
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a85bd503 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Support arbitrary size unboxed tuples in bytecode
This stores the size (number of words on the stack) of the next
expected tuple in the TSO, ctoi_spill_size field, eliminating
the need of stg_ctoi_tN frames for each size.
Note: On 32 bit platform there is still a bytecode tuple size
limit of 255 words on the stack.
Fixes #26946
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e2209031 by Luite Stegeman at 2026-03-27T04:40:49-04:00
Add specialized frames for small tuples
Small tuples are now returned more efficiently to the interpreter.
They use one less word of stack space and don't need manipulation
of the TSO anymore.
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b26bb2ea by VeryMilkyJoe at 2026-03-27T04:41:38-04:00
Remove backwards compatibility pattern synonym `ModLocation`
Fixes #24932
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66e5e324 by Vladislav Zavialov at 2026-03-27T04:42:25-04:00
Extend HsExpr with the StarIsType syntax (#26587, #26967)
This patch allows kinds of the form `k -> *` and `* -> k` to occur in
expression syntax, i.e. to be used as required type arguments.
For example:
{-# LANGUAGE RequiredTypeArguments, StarIsType #-}
x1 = f (* -> * -> *)
x2 = f (forall k. k -> *)
x3 = f ((* -> *) -> Constraint)
Summary of the changes:
* Introduce the HsStar constructor of HsExpr and its extension field XStar.
It is analogous to HsStarTy in HsType.
* Refactor HsStarTy to store the unicode flag as TokStar, defined as
type TokStar = EpUniToken "*" "★" -- similar to TokForall, TokRArrow, etc.
The token is stored in the extension field and replaces the Bool field.
* Extend the `infixexp2` nonterminal to parse `*` as a direct argument of `->`.
This is more limited than the full StarIsType syntax, but has the nice
property of not conflicting with the multiplication operator `a * b`.
Test case: T26967 T26967_tyop
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f8de456f by Sylvain Henry at 2026-03-27T04:43:22-04:00
STM: don't create a transaction in the rhs of catchRetry# (#26028)
We don't need to create a transaction for the rhs of (catchRetry#)
because contrary to the lhs we don't need to abort it on retry. Moreover
it is particularly harmful if we have code such as (#26028):
let cN = readTVar vN >> retry
tree = c1 `orElse` (c2 `orElse` (c3 `orElse` ...))
atomically tree
Because it will stack transactions for the rhss and the read-sets of all
the transactions will be iteratively merged in O(n^2) after the
execution of the most nested retry.
This is the second attempt at implementing this. The first attempt
triggered segfaults (#26291) and has been reverted.
Co-Authored-By: Claude Sonnet 4.6
- - - - -
fcf092dd by Luite Stegeman at 2026-03-27T04:44:17-04:00
Windows: remove StgAsyncIOResult and fix crash/leaks
In stg_block_async{_void}, a stack slot was reserved for
an StgAsyncIOResult. This slot would be filled by the IO
manager upon completion of the async call.
However, if the blocked thread was interrupted by an async
exception, we would end up in an invalid state:
- If the blocked computation was never re-entered, the
StgAsyncIOResult would never be freed.
- If the blocked computation was re-entered, the thread would
find an unitialized stack slot for the StgAsyncIOResult,
leading to a crash reading its fields, or freeing the pointer.
We fix this by removing the StgAsyncIOResult altogether and writing
the result directly to the stack.
Fixes #26341
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05094993 by Luite Stegeman at 2026-03-27T04:45:12-04:00
Don't refine DEFAULT alt for unary typeclasses
A non-DEFAULT data alt for a unary typeclass dictionary would
interfere with Unary Class Magic, leading to segfaults.
fixes #27071
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4ee260cf by sheaf at 2026-03-27T04:46:06-04:00
Fix several oversights in hsExprType
This commit fixes several oversights in GHC.Hs.Syn.Type.hsExprType:
- The 'RecordCon' case was returning the type of the constructor,
instead of the constructor application. This is fixed by using
'splitFunTys'.
- The 'ExplicitTuple' case failed to take into account tuple sections,
and was also incorrectly handling 1-tuples (e.g. 'Solo') which can
be constructed using Template Haskell.
- The 'NegApp' case was returning the type of the negation operator,
again failing to apply it to the argument. Fixed by using
'funResultTy'.
- The 'HsProc' case was computing the result type of the arrow proc
block, without taking into account the argument type. Fix that by
adding a new field to 'CmdTopTc' that stores the arrow type, so that
we can construct the correct result type `arr a b` for
`proc (pat :: a) -> (cmd :: b)`.
- The 'ArithSeq' and 'NegApp' cases were failing to take into account
the result 'HsWrapper', which could e.g. silently drop casts.
This is fixed by introducing 'syntaxExpr_wrappedFunResTy' which, on
top of taking the result type, applies the result 'HsWrapper'.
These fixes are validated by the new GHC API test T26910.
Fixes #26910
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e97232ce by Hai at 2026-03-27T04:47:04-04:00
Parser.y: avoid looking at token with QualifiedDo
This changes the behavior of 'hintQualifiedDo' so that the supplied
token is not inspected when the QualifiedDo language extension bit is
set.
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9831385b by Vladislav Zavialov at 2026-03-27T17:22:30-04:00
Infix holes in types (#11107)
This patch introduces several improvements that follow naturally from
refactoring HsOpTy to represent the operator as an HsType, aligning it
with the approach taken by OpApp and HsExpr.
User-facing changes:
1. Infix holes (t1 `_` t2) are now permitted in types, following the
precedent set by term-level expressions.
Test case: T11107
2. Error messages for illegal promotion ticks are now reported at more
precise source locations.
Test case: T17865
Internal changes:
* The definition of HsOpTy now mirrors that of OpApp:
| HsOpTy (XOpTy p) (LHsType p) (LHsType p) (LHsType p)
| OpApp (XOpApp p) (LHsExpr p) (LHsExpr p) (LHsExpr p)
This moves us one step closer to unifying HsType and HsExpr.
* Ignoring locations,
the old pattern match (HsOpTy x prom lhs op rhs)
is now written as (HsOpTy x lhs (HsTyVar x' prom op) rhs)
but we also handle (HsOpTy x lhs (HsWildCardTy x') rhs)
Constructors other than HsTyVar and HsWildCardTy never appear
in the operator position.
* The various definitions across the compiler have been updated to work
with the new representation, drawing inspiration from the term-level
pipeline where appropriate. For example,
ppr_infix_ty <=> ppr_infix_expr
get_tyop <=> get_op
lookupTypeFixityRn <=> lookupExprFixityRn
(the latter is factored out from rnExpr)
Test cases: T11107 T17865
- - - - -
5b6757d7 by mangoiv at 2026-03-27T17:23:19-04:00
ci: build i386 non-validate for deb12
This is a small fix that will unlock ghcup metadata to run, i386 debian
12 was missing as a job.
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cf942119 by Cheng Shao at 2026-03-30T15:24:37-04:00
ghc-boot: remove unused SizedSeq instances and functions
This commit removes unused `SizedSeq` instances and functions, only
keeping the bits we need for hpc tick sequence for now.
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22c5b7cc by Cheng Shao at 2026-03-30T15:24:38-04:00
ghci: remove unused GHCi.BinaryArray
This patch removes the unused `GHCi.BinaryArray` module from `ghci`.
Closes #27108.
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77abb4ab by Cheng Shao at 2026-03-30T15:25:21-04:00
testsuite: mark T17912 as fragile on Windows
T17912 is still fragile on Windows, it sometimes unexpectedly pass in
CI. This especially strains our already scarce Windows CI runner
resources. Mark it as fragile on Windows for the time being.
- - - - -
d741a6cc by Andreas Klebinger at 2026-03-31T04:39:33-04:00
Bump minimum shake version for hadrian.
We also add the shake version we want to stack.yaml
Fixes #26884
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5e556f9e by Vladislav Zavialov at 2026-03-31T04:40:16-04:00
Status check for the HsType~HsExpr refactoring (#25121)
Add a test case to track the status of a refactoring project within GHC
whose goal is to arrive at the following declaration:
type HsType = HsExpr
The rationale for this is to increase code reuse between the term- and
type-level code in the compiler front-end (AST, parser, renamer, type checker).
The status report is saved to testsuite/tests/ghc-api/T25121_status.stdout
and provides useful insights into what needs to happen to make progress on
the ticket.
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acffb1b1 by fendor at 2026-03-31T04:41:02-04:00
Extract Binary instances to `GHC.ByteCode.Binary`
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e2ea8e25 by fendor at 2026-03-31T04:41:02-04:00
Add `seqNonEmpty` for evaluating `NonEmpty a`
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048b00b7 by fendor at 2026-03-31T04:41:02-04:00
Record `LinkableUsage` instead of `Linkable` in `LoaderState`
Retaining a ByteCode `Linkable` after it has been loaded retains its
`UnlinkedBCO`, keeping it alive for the remainder of the program.
This starts accumulating a lot of `UnlinkedBCO` and memory over time.
However, the `Linkable` is merely used to later record its usage in
`mkObjectUsage`, which is used for recompilation checking.
However, this is incorrect, as the interface file and bytecode objects
could be in different states, e.g. the interface changes, but the
bytecode library hasn't changed so we don't need to recompile and vice
versa.
By computing a `Fingerprint` for the `ModuleByteCode`, and recording it
in the `LinkableUsage`, we know precisely whether the `ByteCode` object
on disk is outdated.
Thus, parts of this commit just makes sure that we efficiently compute a
`Fingerprint` for `ModuleByteCode` and store it in the on-disk
representation of `ModuleByteCode`.
We change the `LoaderState` to retain `LinkableUsage`, which is smaller
representation of a `Linkable`. This allows us to free the unneeded
fields of `Linkable` after linking them.
We declare the following memory invariants that this commit implements:
* No `LinkablePart` should be retained from `LoaderState`.
* `Linkable`s should be unloaded after they have been loaded.
These invariants are unfortunately tricky to automatically uphold, so we
are simply documenting our assumptions for now.
We introduce the `linkable-space` test which makes sure that after
loading, no `DotGBC` or `UnlinkedBCO` is retained.
-------------------------
Metric Increase:
MultiLayerModulesTH_OneShot
-------------------------
We allocate a bit more, but the peak number of bytes doesn't change.
While a bit unfortunate, accepting the metric increase.
We add multiple new performance measurements where we were able to
observe the desired memory invariants. Further, we add regression tests
to validate that the recompilation checker behaves more correct than
before.
- - - - -
2d1c1997 by Simon Jakobi at 2026-03-31T04:41:46-04:00
Eliminate dictionary-passing in ListMap operations
Mark the ListMap helpers 'INLINABLE' so importing modules can specialise
the 'TrieMap (ListMap m)' methods and avoid recursive dictionary-passing.
See Note [Making ListMap operations specialisable].
Fixes #27097
- - - - -
ed2c6570 by Cheng Shao at 2026-03-31T04:42:33-04:00
testsuite: fix testdir cleanup logic on Windows
testdir cleanup is unreliable on Windows (#13162) and despite existing
hacks in the driver, new failure mode has occurred. This patch makes
it print the warning and carry on when failed to clean up a testdir,
instead of reporting a spurious framework failure. See added comment
for detailed explanation.
- - - - -
d9388e29 by Simon Jakobi at 2026-03-31T13:14:59-04:00
Add regression test for #18177
Closes #18177.
Assisted-by: Codex
- - - - -
6a10045c by mangoiv at 2026-03-31T13:15:43-04:00
ci: allow metric decrease for two tests on i386
There has been a nightly failure on i386 due to a compiler runtime
improvement on i386 debian 12. We allow that.
Metric Decrease (test_env='i386-linux-deb12'):
T12707 T8095
- - - - -
7fbb4fcb by Rodrigo Mesquita at 2026-04-01T12:16:33+00:00
Bump default language edition to GHC2024
As per the accepted ghc-proposal#632
Fixes #26039
- - - - -
5ae43275 by Peng Fan at 2026-04-01T19:01:06-04:00
NCG/LA64: add cmpxchg and xchg primops
And append some new instructions for LA664 uarch.
Apply fix to cmpxchg-prim by Andreas Klebinger.
Suggestions in https://gitlab.haskell.org/ghc/ghc/-/merge_requests/15515
- - - - -
8f95534a by Duncan Coutts at 2026-04-01T19:01:52-04:00
Remove signal-based ticker implementations
Fixes issue #27073
All supported platforms should work with the pthreads + nanosleep based
ticker implementation. This avoids all the problems with using signals.
In practice, all supported platforms were probably using the non-signal
tickers already, which is probably why we do not get lots of reports
about deadlocks and other weirdness: we were definately using functions
that are not async signal safe in the tick handler (such as fflush to
flussh the eventlog).
Only Solaris was explicitly using the timer_create ticker impl, and even
Solaris could probably use the pthreads one (if anyone cared: Solaris is
no longer a Teir 3 supported platform).
Plausibly the only supported platform that this will change will be AIX,
which should now use the pthreads impl.
- - - - -
51b32b0d by Duncan Coutts at 2026-04-01T19:01:52-04:00
Tidy up some timer/ticker comments elsewhere
- - - - -
7562bcd7 by Duncan Coutts at 2026-04-01T19:01:52-04:00
Remove now-unused install_vtalrm_handler
Support function used by both of the signal-based ticker
implementations.
- - - - -
6da127c7 by Duncan Coutts at 2026-04-01T19:01:52-04:00
No longer probe for timer_create in rts/configure
It was only used by the TimerCreate.c ticker impl.
- - - - -
3fd490fa by Duncan Coutts at 2026-04-01T19:01:53-04:00
Note that rtsTimerSignal is deprecated.
- - - - -
63099b0f by Simon Jakobi at 2026-04-01T19:02:39-04:00
Add perf test for #13960
Closes #13960.
- - - - -
470c8431 by Matthew Pickering at 2026-04-03T11:52:22+02:00
Add support for ghc-debug to ghc executable
- - - - -
1291 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/flake.lock
- .gitlab/generate-ci/gen_ci.hs
- + .gitlab/issue_templates/release_tracking.md
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- .gitmodules
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Utils.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- + compiler/GHC/ByteCode/Binary.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- + compiler/GHC/ByteCode/Recomp/Binary.hs
- compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Type.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/AArch64/Regs.hs
- compiler/GHC/CmmToAsm/Config.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/CmmToAsm/LA64/Regs.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/PPC/Regs.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/RV64/Ppr.hs
- compiler/GHC/CmmToAsm/RV64/Regs.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToAsm/X86/Regs.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Config.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/CmmToLlvm/Mangler.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/FloatOut.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- + compiler/GHC/Core/Opt/Range.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToStg/AddImplicitBinds.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/TrieMap.hs
- compiler/GHC/Driver/Config/CmmToAsm.hs
- compiler/GHC/Driver/Config/CmmToLlvm.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Interpreter.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Hooks.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Types.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Linker/ByteCode.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Dynamic.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/String.hs
- + compiler/GHC/Platform/Tag.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Fixity.hs
- compiler/GHC/Rename/HsType.hs
- + compiler/GHC/Rename/Lit.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Interpreter/Init.hs
- compiler/GHC/Runtime/Interpreter/JS.hs
- compiler/GHC/Runtime/Interpreter/Types.hs
- compiler/GHC/Runtime/Interpreter/Wasm.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm/Closure.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/Utils.hs
- compiler/GHC/StgToJS/Literal.hs
- compiler/GHC/StgToJS/Object.hs
- compiler/GHC/StgToJS/Prim.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/TyCl/Build.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Id/Info.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Literal.hs
- + compiler/GHC/Types/Literal/Floating.hs
- compiler/GHC/Types/RepType.hs
- compiler/GHC/Types/SourceText.hs
- compiler/GHC/Types/Tickish.hs
- compiler/GHC/Unit/Home/ModInfo.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/Location.hs
- compiler/GHC/Unit/Module/Status.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Error.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/Lit.hs
- compiler/Language/Haskell/Syntax/Pat.hs
- compiler/Language/Haskell/Syntax/Type.hs
- compiler/ghc.cabal.in
- configure.ac
- distrib/configure.ac.in
- + docs/users_guide/10.0.1-notes.rst
- docs/users_guide/9.16.1-notes.rst
- docs/users_guide/eventlog-formats.rst
- docs/users_guide/exts/control.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/pragmas.rst
- + docs/users_guide/exts/qualified_strings.rst
- docs/users_guide/exts/recursive_do.rst
- docs/users_guide/exts/required_type_arguments.rst
- docs/users_guide/exts/rewrite_rules.rst
- docs/users_guide/ghci.rst
- docs/users_guide/phases.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/using.rst
- docs/users_guide/utils.py
- docs/users_guide/wasm.rst
- + ghc-debug
- ghc/GHCi/Leak.hs
- ghc/GHCi/UI.hs
- ghc/Main.hs
- ghc/ghc-bin.cabal.in
- hadrian/README.md
- hadrian/bootstrap/generate_bootstrap_plans
- hadrian/bootstrap/plan-9_10_1.json
- hadrian/bootstrap/plan-9_10_2.json
- + hadrian/bootstrap/plan-9_10_3.json
- hadrian/bootstrap/plan-9_12_1.json
- hadrian/bootstrap/plan-9_12_2.json
- + hadrian/bootstrap/plan-9_14_1.json
- hadrian/bootstrap/plan-bootstrap-9_10_1.json
- hadrian/bootstrap/plan-bootstrap-9_10_2.json
- + hadrian/bootstrap/plan-bootstrap-9_10_3.json
- hadrian/bootstrap/plan-bootstrap-9_12_1.json
- hadrian/bootstrap/plan-bootstrap-9_12_2.json
- + hadrian/bootstrap/plan-bootstrap-9_14_1.json
- hadrian/cabal.project
- hadrian/doc/flavours.md
- hadrian/hadrian.cabal
- hadrian/src/CommandLine.hs
- hadrian/src/Main.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/GenPrimopCode.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Default.hs
- − hadrian/src/Settings/Flavours/Benchmark.hs
- hadrian/src/Settings/Flavours/Development.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Quick.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Quickest.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/stack.yaml
- + instructions.md
- libraries/base/changelog.md
- libraries/base/src/Control/Applicative.hs
- libraries/base/src/Control/Arrow.hs
- libraries/base/src/Data/Bool.hs
- libraries/base/src/Data/Char.hs
- libraries/base/src/Data/Eq.hs
- libraries/base/src/Data/List.hs
- libraries/base/src/Data/List/NubOrdSet.hs
- libraries/base/src/Data/Semigroup.hs
- libraries/base/src/GHC/Base.hs
- libraries/base/src/GHC/Exts.hs
- libraries/base/src/GHC/Fingerprint.hs
- libraries/base/src/GHC/ResponseFile.hs
- libraries/base/src/GHC/Stats.hs
- libraries/base/src/GHC/Unicode.hs
- libraries/base/src/GHC/Weak.hs
- libraries/base/src/GHC/Weak/Finalize.hs
- libraries/base/src/Prelude.hs
- libraries/base/src/System/Exit.hs
- libraries/base/src/System/IO.hs
- libraries/base/src/System/IO/OS.hs
- libraries/base/src/System/Info.hs
- libraries/base/src/System/Mem/Weak.hs
- libraries/base/tests/IO/T17912.hs
- libraries/base/tests/IO/T18832.hs
- libraries/base/tests/IO/all.T
- libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs
- libraries/ghc-boot/GHC/Data/SizedSeq.hs
- compiler/GHC/Data/SmallArray.hs → libraries/ghc-boot/GHC/Data/SmallArray.hs
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-experimental/CHANGELOG.md
- libraries/ghc-experimental/ghc-experimental.cabal.in
- libraries/ghc-experimental/src/GHC/Profiling/Eras.hs
- libraries/ghc-experimental/src/GHC/Stack/Annotation/Experimental.hs
- + libraries/ghc-experimental/src/GHC/Stack/Decode/Experimental.hs
- + libraries/ghc-experimental/tests/Makefile
- libraries/base/src/GHC/Weak/Finalizehs → libraries/ghc-experimental/tests/all.T
- + libraries/ghc-experimental/tests/backtraces/Makefile
- + libraries/ghc-experimental/tests/backtraces/T26806a.hs
- + libraries/ghc-experimental/tests/backtraces/T26806a.stderr
- + libraries/ghc-experimental/tests/backtraces/T26806b.hs
- + libraries/ghc-experimental/tests/backtraces/T26806b.stderr
- + libraries/ghc-experimental/tests/backtraces/T26806c.hs
- + libraries/ghc-experimental/tests/backtraces/T26806c.stderr
- + libraries/ghc-experimental/tests/backtraces/all.T
- libraries/ghc-heap/GHC/Exts/Heap/Closures.hs
- libraries/ghc-internal/CHANGELOG.md
- libraries/ghc-internal/cbits/Stack.cmm
- libraries/ghc-internal/codepages/MakeTable.hs
- libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs
- libraries/ghc-internal/src/GHC/Internal/Arr.hs
- libraries/ghc-internal/src/GHC/Internal/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Bits.hs
- libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs
- − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Char.hs
- libraries/ghc-internal/src/GHC/Internal/Clock.hsc
- libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs
- libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs
- − libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs
- libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc
- libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs
- − libraries/ghc-internal/src/GHC/Internal/Data/Bool.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Data.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Either.hs
- − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Function.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Functor/Utils.hs
- libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs
- libraries/ghc-internal/src/GHC/Internal/Data/List.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs
- libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Ord.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Proxy.hs
- libraries/ghc-internal/src/GHC/Internal/Data/STRef.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Data/String.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Coercion.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Equality.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Type/Ord.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Typeable.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Unique.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Version.hs
- − libraries/ghc-internal/src/GHC/Internal/Data/Version.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs
- libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Encoding/UTF8.hs
- libraries/ghc-internal/src/GHC/Internal/Enum.hs
- libraries/ghc-internal/src/GHC/Internal/Environment.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Array.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Control.hs
- libraries/ghc-internal/src/GHC/Internal/Event/EPoll.hsc
- libraries/ghc-internal/src/GHC/Internal/Event/IntVar.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Internal/Types.hs
- libraries/ghc-internal/src/GHC/Internal/Event/KQueue.hsc
- libraries/ghc-internal/src/GHC/Internal/Event/Manager.hs
- libraries/ghc-internal/src/GHC/Internal/Event/PSQ.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Poll.hsc
- libraries/ghc-internal/src/GHC/Internal/Event/Thread.hs
- libraries/ghc-internal/src/GHC/Internal/Event/TimeOut.hs
- libraries/ghc-internal/src/GHC/Internal/Event/TimerManager.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Unique.hs
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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/19bdc4a9301f8ae47e6b940054a1121...
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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/19bdc4a9301f8ae47e6b940054a1121...
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