[Git][ghc/ghc][wip/davide/hadrian_avoid_response_files] Hadrian: disable response files for GHC/Haddock builders on non-Windows
by David Eichmann (＠DavidEichmann) 29 May '26
by David Eichmann (＠DavidEichmann) 29 May '26
29 May '26
David Eichmann pushed to branch wip/davide/hadrian_avoid_response_files at Glasgow Haskell Compiler / GHC
Commits:
52935fea by David Eichmann at 2026-05-29T17:19:55+01:00
Hadrian: disable response files for GHC/Haddock builders on non-Windows
This makes debugging build errors easier on non-windows hosts.
See issue #27230
- - - - -
2 changed files:
- hadrian/src/Builder.hs
- hadrian/src/Hadrian/Utilities.hs
Changes:
=====================================
hadrian/src/Builder.hs
=====================================
@@ -346,7 +346,16 @@ instance H.Builder Builder where
Haddock BuildPackage -> runHaddock path buildArgs buildInputs
- Ghc _ _ -> runGhcWithResponse path buildArgs buildInputs buildOptions
+ Ghc _ _ ->
+ -- Use a response file for ghc invocations to avoid issues with command line
+ -- size limit on Windows (#26637).
+ -- Note we can't put the buildArgs in a response file, because some flags require
+ -- empty arguments (such as the -dep-suffix flag), but that isn't supported
+ -- yet due to #26560.
+ withResponseFileOnWindows
+ buildInputs
+ (escapeArgs buildInputs)
+ (\buildInputs' -> cmd [path] buildArgs buildInputs' buildOptions)
HsCpp -> captureStdout
@@ -386,23 +395,10 @@ runHaddock :: FilePath -- ^ path to @haddock@
-> [String]
-> [FilePath] -- ^ input file paths
-> Action ()
-runHaddock haddockPath flagArgs fileInputs = withResponseFile $ \tmp -> do
- writeFile' tmp $ escapeArgs fileInputs
- cmd [haddockPath] flagArgs ('@' : tmp)
-
--- | Use a response file for ghc invocations to avoid issues with command line
--- size limit on Windows (#26637).
-runGhcWithResponse :: FilePath -- ^ Path to ghc
- -> [String] -- ^ Arguments passed on the command line
- -> [FilePath] -- ^ Input file paths (passed via response file)
- -> [CmdOption]
- -> Action ()
-runGhcWithResponse ghcPath buildArgs buildInputs buildOptions = withResponseFile $ \tmp -> do
- -- We can't put the buildArgs in a response file, because some flags require
- -- empty arguments (such as the -dep-suffix flag), but that isn't supported
- -- yet due to #26560.
- writeFile' tmp (escapeArgs buildInputs)
- cmd [ghcPath] buildArgs ('@' : tmp) buildOptions
+runHaddock haddockPath flagArgs fileInputs = withResponseFileOnWindows
+ fileInputs
+ (escapeArgs fileInputs)
+ (\fileInputs' -> cmd [haddockPath] flagArgs fileInputs')
-- TODO: Some builders are required only on certain platforms. For example,
-- 'Objdump' is only required on OpenBSD and AIX. Add support for platform
=====================================
hadrian/src/Hadrian/Utilities.hs
=====================================
@@ -14,7 +14,7 @@ module Hadrian.Utilities (
-- * Paths
BuildRoot (..), buildRoot, buildRootRules, isGeneratedSource,
- KeepResponseFiles (..), keepResponseFiles, withResponseFile,
+ KeepResponseFiles (..), keepResponseFiles, withResponseFile, withResponseFileOnWindows,
-- * File system operations
copyFile, copyFileUntracked, createFileLink, fixFile,
@@ -49,7 +49,9 @@ import Development.Shake hiding (Normal)
import Development.Shake.Classes
import Development.Shake.FilePath
import System.Environment (lookupEnv)
+import System.Info.Extra (isWindows)
import System.IO (hClose, openTempFile)
+import System.IO.Error (isPermissionError)
import qualified Data.ByteString as BS
import qualified Control.Exception.Base as IO
@@ -57,8 +59,7 @@ import qualified Data.HashMap.Strict as Map
import qualified System.Directory.Extra as IO
import qualified System.Info.Extra as IO
import qualified System.IO as IO
-import System.IO.Error (isPermissionError)
-import qualified System.FilePath.Posix as Posix
+import qualified System.FilePath.Posix as Posix
-- | Extract a value from a singleton list, or terminate with an error message
-- if the list does not contain exactly one value.
@@ -328,6 +329,23 @@ keepResponseFiles = do
KeepResponseFiles keep <- userSetting (KeepResponseFiles False)
return keep
+-- | Run an action either with command arguments direcly or by, on windows,
+-- placing those arguments into a response file (initialized to some string).
+--
+-- With @--keep-response-files@, the file is left on disk (if used)
+withResponseFileOnWindows ::
+ [String] -- ^ Command arguments
+ -> String -- ^ Response file content (the command arguments converted to the response file format).
+ -> ([String] -> Action a) -- ^ Perform an action with the given command arguments or, on windows, the with the
+ -- response file initialized and the passed argument is in the form ["@reponseFilePath"]
+ -> Action a
+withResponseFileOnWindows commandArgs responseFileContent action = do
+ if isWindows
+ then withResponseFile $ \tmp -> do
+ writeFile' tmp responseFileContent
+ action ['@' : tmp]
+ else action commandArgs
+
-- | Run an action with a response file path.
--
-- With @--keep-response-files@, the file is left on disk.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/52935feab3cdf20cc7c98f6214c38b4…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/52935feab3cdf20cc7c98f6214c38b4…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/davide/hadrian_avoid_response_files] Hadrian: disable response files on windows for GHC/Haddock builders
by David Eichmann (＠DavidEichmann) 29 May '26
by David Eichmann (＠DavidEichmann) 29 May '26
29 May '26
David Eichmann pushed to branch wip/davide/hadrian_avoid_response_files at Glasgow Haskell Compiler / GHC
Commits:
9b9e0d5e by David Eichmann at 2026-05-29T17:14:31+01:00
Hadrian: disable response files on windows for GHC/Haddock builders
This makes debugging build errors easier on non-windows hosts.
See issue #27230
- - - - -
2 changed files:
- hadrian/src/Builder.hs
- hadrian/src/Hadrian/Utilities.hs
Changes:
=====================================
hadrian/src/Builder.hs
=====================================
@@ -346,7 +346,16 @@ instance H.Builder Builder where
Haddock BuildPackage -> runHaddock path buildArgs buildInputs
- Ghc _ _ -> runGhcWithResponse path buildArgs buildInputs buildOptions
+ Ghc _ _ ->
+ -- Use a response file for ghc invocations to avoid issues with command line
+ -- size limit on Windows (#26637).
+ -- Note we can't put the buildArgs in a response file, because some flags require
+ -- empty arguments (such as the -dep-suffix flag), but that isn't supported
+ -- yet due to #26560.
+ withResponseFileOnWindows
+ buildInputs
+ (escapeArgs buildInputs)
+ (\buildInputs' -> cmd [path] buildArgs buildInputs' buildOptions)
HsCpp -> captureStdout
@@ -386,23 +395,10 @@ runHaddock :: FilePath -- ^ path to @haddock@
-> [String]
-> [FilePath] -- ^ input file paths
-> Action ()
-runHaddock haddockPath flagArgs fileInputs = withResponseFile $ \tmp -> do
- writeFile' tmp $ escapeArgs fileInputs
- cmd [haddockPath] flagArgs ('@' : tmp)
-
--- | Use a response file for ghc invocations to avoid issues with command line
--- size limit on Windows (#26637).
-runGhcWithResponse :: FilePath -- ^ Path to ghc
- -> [String] -- ^ Arguments passed on the command line
- -> [FilePath] -- ^ Input file paths (passed via response file)
- -> [CmdOption]
- -> Action ()
-runGhcWithResponse ghcPath buildArgs buildInputs buildOptions = withResponseFile $ \tmp -> do
- -- We can't put the buildArgs in a response file, because some flags require
- -- empty arguments (such as the -dep-suffix flag), but that isn't supported
- -- yet due to #26560.
- writeFile' tmp (escapeArgs buildInputs)
- cmd [ghcPath] buildArgs ('@' : tmp) buildOptions
+runHaddock haddockPath flagArgs fileInputs = withResponseFileOnWindows
+ fileInputs
+ (escapeArgs fileInputs)
+ (\fileInputs' -> cmd [haddockPath] flagArgs fileInputs')
-- TODO: Some builders are required only on certain platforms. For example,
-- 'Objdump' is only required on OpenBSD and AIX. Add support for platform
=====================================
hadrian/src/Hadrian/Utilities.hs
=====================================
@@ -14,7 +14,7 @@ module Hadrian.Utilities (
-- * Paths
BuildRoot (..), buildRoot, buildRootRules, isGeneratedSource,
- KeepResponseFiles (..), keepResponseFiles, withResponseFile,
+ KeepResponseFiles (..), keepResponseFiles, withResponseFile, withResponseFileOnWindows,
-- * File system operations
copyFile, copyFileUntracked, createFileLink, fixFile,
@@ -49,7 +49,9 @@ import Development.Shake hiding (Normal)
import Development.Shake.Classes
import Development.Shake.FilePath
import System.Environment (lookupEnv)
+import System.Info.Extra (isWindows)
import System.IO (hClose, openTempFile)
+import System.IO.Error (isPermissionError)
import qualified Data.ByteString as BS
import qualified Control.Exception.Base as IO
@@ -57,8 +59,7 @@ import qualified Data.HashMap.Strict as Map
import qualified System.Directory.Extra as IO
import qualified System.Info.Extra as IO
import qualified System.IO as IO
-import System.IO.Error (isPermissionError)
-import qualified System.FilePath.Posix as Posix
+import qualified System.FilePath.Posix as Posix
-- | Extract a value from a singleton list, or terminate with an error message
-- if the list does not contain exactly one value.
@@ -328,6 +329,23 @@ keepResponseFiles = do
KeepResponseFiles keep <- userSetting (KeepResponseFiles False)
return keep
+-- | Run an action either with command arguments direcly or by, on windows,
+-- placing those arguments into a response file (initialized to some string).
+--
+-- With @--keep-response-files@, the file is left on disk (if used)
+withResponseFileOnWindows ::
+ [String] -- ^ Command arguments
+ -> String -- ^ Response file content (the command arguments converted to the response file format).
+ -> ([String] -> Action a) -- ^ Perform an action with the given command arguments or, on windows, the with the
+ -- response file initialized and the passed argument is in the form ["@reponseFilePath"]
+ -> Action a
+withResponseFileOnWindows commandArgs responseFileContent action = do
+ if isWindows
+ then withResponseFile $ \tmp -> do
+ writeFile' tmp responseFileContent
+ action ['@' : tmp]
+ else action commandArgs
+
-- | Run an action with a response file path.
--
-- With @--keep-response-files@, the file is left on disk.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9b9e0d5e7baffd2e40e2189336ee8cd…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9b9e0d5e7baffd2e40e2189336ee8cd…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc] Pushed new branch wip/davide/hadrian_avoid_response_files
by David Eichmann (＠DavidEichmann) 29 May '26
by David Eichmann (＠DavidEichmann) 29 May '26
29 May '26
David Eichmann pushed new branch wip/davide/hadrian_avoid_response_files at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/davide/hadrian_avoid_response…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc] Pushed new branch wip/davide/windows-dlls-and-ghc-internal-def
by David Eichmann (＠DavidEichmann) 29 May '26
by David Eichmann (＠DavidEichmann) 29 May '26
29 May '26
David Eichmann pushed new branch wip/davide/windows-dlls-and-ghc-internal-def at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/davide/windows-dlls-and-ghc-i…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 8 commits: Add optional config setting for LibDir (#19174)
by Marge Bot (＠marge-bot) 29 May '26
by Marge Bot (＠marge-bot) 29 May '26
29 May '26
Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC
Commits:
ed29a5e6 by Sven Tennie at 2026-05-28T17:30:36-04:00
Add optional config setting for LibDir (#19174)
Previously, the `libDir` was derived from `topDir`. This won't work for
inplace stage2 cross-compilers where binaries and libraries are in
different stage dirs (`_build/stage1/` for executables and
`_build/stage2` for libraries).
`LibDir` is set in the inplace `settings` files. For bindists, we
generate a new `settings` file with no `LibDir` entry. GHC then defaults
to use `topDir` as `libDir` again. This keeps the bindist relocatable.
If `LibDir` is a relative path, it is interpreted relatively to
`topDir`.
The global package db is part of the `lib/` folder. If we want to point
for inplace cross-compilers to the succeeding stage's folder, this is
done by setting `LibDir`. Thus, the global package db must be found
relative to `libDir`` (which may default to `topDir` or be set by
`LibDir`).
The complexity of settings becomes scary. So, add a test to ensure
`LibDir` works as expected.
- - - - -
8339cf8f by Sven Tennie at 2026-05-28T17:30:36-04:00
Add Haddock to FileSettings
Helping to understand the fields' meanings without deeper analyses.
- - - - -
4ce251e4 by Sylvain Henry at 2026-05-28T17:31:39-04:00
foundation test: skip signed minBound `quot` (-1) (#27222)
`minBound `quot` (-1)` for fixed-width signed integers is platform
dependent: the mathematical result -minBound is not representable in
the type. On x86, IDIV traps; LLVM's sdiv is undefined behaviour in
this case; on AArch64/RISC-V, SDIV wraps to minBound.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
b8ba7e61 by Simon Jakobi at 2026-05-28T17:32:23-04:00
Prevent dictionary-passing in checkTyEqRhs
...by pre-specializing it to TcM.
Previously, wherever checkTyEqRhs was used in other modules, the
Core showed dictionary passing ($fMonadIOEnv). The added SPECIALIZE
pragma prevents this.
- - - - -
2528c662 by David Eichmann at 2026-05-29T09:36:40-04:00
Hadrian: create a ghc-internal .def file per ghc-internal dll
The .def file generated from rts/win32/libHSghc-internal.def.in contains
the name of the ghc-internal dll. The correct dll name differs based
on if the dll is inplace/final and if using the Dynamic way. Previously,
this was not accounted for and inconsistent dlls names where used. That
led to failure when loading dlls at runtime in experiments with windows
dynamic linking.
- - - - -
6d27ac8b by Sylvain Henry at 2026-05-29T09:36:48-04:00
ghc-bignum: copy backend interface haddocks to Native backend (#27305)
The haddock comments documenting the BigNat backend interface (function
contracts, expected MutableWordArray# sizes, return-value semantics, etc.)
were attached to the FFI backend module. Copy them to the Native backend
so they remain in tree once the FFI backend is removed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
4ce5f90c by Sylvain Henry at 2026-05-29T09:36:48-04:00
ghc-bignum: remove FFI backend (#27305)
The FFI backend of ghc-bignum (now part of ghc-internal) had no known
users and is easy to recreate by relinking ghc-internal with a custom
backend. Remove the backend module, the bignum-ffi cabal flag, and the
ffi option from Hadrian's --bignum selector. The backend interface
documentation now lives in the Native backend module.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
da02b9b4 by Sylvain Henry at 2026-05-29T09:36:48-04:00
ghc-bignum: remove Check backend (#27305)
The Check backend of ghc-bignum (now part of ghc-internal) compared the
selected backend's output against the Native backend for validation.
It had no known users. Remove the backend module, the bignum-check
cabal flag, the bignumCheck Hadrian flavour field, and the check-
prefix in Hadrian's --bignum selector.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
36 changed files:
- + changelog.d/libdir-setting
- + changelog.d/remove-bignum-check-backend
- + changelog.d/remove-bignum-ffi-backend
- compiler/GHC/Driver/Config/Interpreter.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Tc/Utils/Unify.hs
- hadrian/README.md
- hadrian/doc/user-settings.md
- hadrian/src/CommandLine.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Packages.hs
- libraries/ghc-bignum/ghc-bignum.cabal
- libraries/ghc-boot/GHC/Settings/Utils.hs
- libraries/ghc-internal/bignum-backend.rst
- libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-internal/src/GHC/Internal/Bignum/Backend.hs
- − libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Check.hs
- − libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/FFI.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Native.hs
- − libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Selected.hs
- rts/win32/libHSghc-internal.def.in
- testsuite/tests/MiniQuickCheck.hs
- + testsuite/tests/ghc-api/settings/LibDir.hs
- + testsuite/tests/ghc-api/settings/LibDir.stdout
- + testsuite/tests/ghc-api/settings/all.T
- testsuite/tests/numeric/should_run/foundation.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f6730aa32dcb9cf81a8512f247e6ec…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f6730aa32dcb9cf81a8512f247e6ec…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/mangoiv/ghc-9.12-bp] Trim the continuation in mkDupableContWithDmds
by Magnus (＠MangoIV) 29 May '26
by Magnus (＠MangoIV) 29 May '26
29 May '26
Magnus pushed to branch wip/mangoiv/ghc-9.12-bp at Glasgow Haskell Compiler / GHC
Commits:
8725aa42 by mangoiv at 2026-05-29T13:33:44+02:00
Trim the continuation in mkDupableContWithDmds
When there are no remaining argument demands, it means the application
is bottoming. In this case, we can trim the continuation to avoid the
panic that was observed in #27261.
See Note [Trimming the continuation for bottoming functions] in
GHC.Core.Opt.Simplify.Iteration.
This patch was rewritten to avoid pulling in a refactor.
The original patch is included in master as 4a645683ee0bd4421a88cd6ec49b40c6046b041d
- - - - -
5 changed files:
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- + testsuite/tests/simplCore/should_compile/T27261.hs
- + testsuite/tests/simplCore/should_compile/T27261_aux.hs
- testsuite/tests/simplCore/should_compile/all.T
Changes:
=====================================
compiler/GHC/Core/Opt/Simplify/Iteration.hs
=====================================
@@ -24,7 +24,7 @@ import GHC.Core.Opt.Simplify.Env
import GHC.Core.Opt.Simplify.Inline
import GHC.Core.Opt.Simplify.Utils
import GHC.Core.Opt.OccurAnal ( occurAnalyseExpr, zapLambdaBndrs, scrutOkForBinderSwap, BinderSwapDecision (..) )
-import GHC.Core.Make ( FloatBind, mkImpossibleExpr, castBottomExpr )
+import GHC.Core.Make ( FloatBind, mkImpossibleExpr )
import qualified GHC.Core.Make
import GHC.Core.Coercion hiding ( substCo, substCoVar )
import GHC.Core.Reduction
@@ -2293,24 +2293,14 @@ rebuildCall :: SimplEnv -> ArgInfo -> SimplCont
---------- Bottoming applications --------------
rebuildCall env (ArgInfo { ai_fun = fun, ai_args = rev_args, ai_dmds = [] }) cont
- -- When we run out of strictness args, it means
- -- that the call is definitely bottom; see GHC.Core.Opt.Simplify.Utils.mkArgInfo
- -- Then we want to discard the entire strict continuation. E.g.
- -- * case (error "hello") of { ... }
- -- * (error "Hello") arg
- -- * f (error "Hello") where f is strict
- -- etc
- -- Then, especially in the first of these cases, we'd like to discard
- -- the continuation, leaving just the bottoming expression. But the
- -- type might not be right, so we may have to add a coerce.
- | not (contIsTrivial cont) -- Only do this if there is a non-trivial
- -- continuation to discard, else we do it
- -- again and again!
- = seqType cont_ty `seq` -- See Note [Avoiding space leaks in OutType]
- return (emptyFloats env, castBottomExpr res cont_ty)
- where
- res = argInfoExpr fun rev_args
- cont_ty = contResultType cont
+ -- When we run out of demands, it means that the call is definitely bottom.
+ -- See (TC2) in Note [Trimming the continuation for bottoming functions]
+ = rebuild env (argInfoExpr fun rev_args) (mkBottomCont env cont)
+ -- NOTE(mangoiv): the env passed to mkBottomCont is only relevant for its static part
+ -- and should not be looked at whatsoever, which is why it should be fine to pass it
+ -- this way. The reason why we deviate from the original patch is that it was done
+ -- after a significant refactor we cannot backport.
+ -- The original patch should be included in `master` as 4a645683ee0bd4421a88cd6ec49b40c6046b041d
---------- Try inlining, if ai_rewrite = TryInlining --------
-- In the TryInlining case we try inlining immediately, before simplifying
@@ -3813,6 +3803,41 @@ When we have
then we can just duplicate those alts because the A and C cases
will disappear immediately. This is more direct than creating
join points and inlining them away. See #4930.
+
+Note [Trimming the continuation for bottoming functions]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Suppose
+ f :: Int -> Int -> Int
+ f x = error "urk"
+
+ foo = f 3 4
+
+f's demand signature say "after one arg I return bottom". We can drop
+the remaining arguments, thus
+
+ foo = case f 3 of {}
+
+This trimming can also be done with other continuations:
+ * case (error "hello") of { ... }
+ * f (error "Hello") where f is strict
+ etc
+
+We implement the trimming in three parts:
+
+(TC1) In `mkArgInfo`, for a bottoming function, we make a list of `RemainingArgDmds`
+ with a finite list of elements (in the example above, just one).
+
+ For comparison, note that, for non-bottoming functions, the `RemainingArgDmds`
+ always finishes with an infinite list of `topDmd`.
+
+(TC2) In `rebuildCall`, when we run out of `RemainingArgDmds` we discard the
+ remaining continuation.
+
+ After discarding the continuation, the types might not match, in which case
+ we leave behind a (case <hole> of {}) wrapper. See the call to `mkBottomCont`.
+
+(TC3) In `mkDupableContWithDmds`, we similarly discard the continuation when
+ we run out of `RemainingArgDmds`.
-}
--------------------
@@ -3931,7 +3956,7 @@ mkDupableContWithDmds env dmds
; return (floats, ApplyToTy { sc_cont = cont'
, sc_arg_ty = arg_ty, sc_hole_ty = hole_ty }) }
-mkDupableContWithDmds env dmds
+mkDupableContWithDmds env (dmd : cont_dmds)
(ApplyToVal { sc_arg = arg, sc_dup = dup, sc_env = se
, sc_cont = cont, sc_hole_ty = hole_ty })
= -- e.g. [...hole...] (...arg...)
@@ -3939,8 +3964,7 @@ mkDupableContWithDmds env dmds
-- let a = ...arg...
-- in [...hole...] a
-- NB: sc_dup /= OkToDup; that is caught earlier by contIsDupable
- do { let (dmd:cont_dmds) = dmds -- Never fails
- ; (floats1, cont') <- mkDupableContWithDmds env cont_dmds cont
+ do { (floats1, cont') <- mkDupableContWithDmds env cont_dmds cont
; let env' = env `setInScopeFromF` floats1
; (_, se', arg') <- simplLazyArg env' dup hole_ty Nothing se arg
; (let_floats2, arg'') <- makeTrivial env NotTopLevel dmd (fsLit "karg") arg'
@@ -3954,6 +3978,12 @@ mkDupableContWithDmds env dmds
-- See Note [StaticEnv invariant] in GHC.Core.Opt.Simplify.Utils
, sc_dup = OkToDup, sc_cont = cont'
, sc_hole_ty = hole_ty }) }
+mkDupableContWithDmds env dmds cont
+ -- No more demands => function is definitely bottom
+ -- => simply trim the continuation
+ -- c.f. the null-demands case in `rebuildCall`
+ -- See (TC3) in Note [Trimming the continuation for bottoming functions]
+ | [] <- dmds = return (emptyFloats env, mkBottomCont env cont)
mkDupableContWithDmds env _
(Select { sc_bndr = case_bndr, sc_alts = alts, sc_env = se, sc_cont = cont })
=====================================
compiler/GHC/Core/Opt/Simplify/Utils.hs
=====================================
@@ -24,7 +24,7 @@ module GHC.Core.Opt.Simplify.Utils (
SimplCont(..), DupFlag(..), FromWhat(..), StaticEnv,
isSimplified, contIsStop,
contIsDupable, contResultType, contHoleType, contHoleScaling,
- contIsTrivial, contArgs, contIsRhs,
+ contIsTrivial, contArgs, contIsRhs, mkBottomCont,
countArgs,
mkBoringStop, mkRhsStop, mkLazyArgStop,
interestingCallContext,
@@ -87,6 +87,8 @@ import Control.Monad ( guard, when )
import Data.List ( sortBy )
import Data.Maybe
import Data.Graph
+import GHC.Core.TyCo.Compare (eqTypeIgnoringMultiplicity)
+import GHC.Core.Make (mkWildValBinder)
{- *********************************************************************
* *
@@ -505,6 +507,20 @@ contIsTrivial (ApplyToTy { sc_cont = k }) = contIsTrivial
contIsTrivial (CastIt { sc_cont = k }) = contIsTrivial k
contIsTrivial _ = False
+-------------------
+contStop :: SimplCont -> SimplCont
+-- ^ Get the 'Stop' at the tail of the continuation
+--
+-- Always returns a continuation of form @(Stop ...)@.
+contStop stop@(Stop {}) = stop
+contStop (CastIt { sc_cont = k }) = contStop k
+contStop (StrictBind { sc_cont = k }) = contStop k
+contStop (StrictArg { sc_cont = k }) = contStop k
+contStop (Select { sc_cont = k }) = contStop k
+contStop (ApplyToTy { sc_cont = k }) = contStop k
+contStop (ApplyToVal { sc_cont = k }) = contStop k
+contStop (TickIt _ k) = contStop k
+
-------------------
contResultType :: SimplCont -> OutType
contResultType (Stop ty _ _) = ty
@@ -623,6 +639,37 @@ contEvalContext k = case k of
-- Perhaps reconstruct the demand on the scrutinee by looking at field
-- and case binder dmds, see addCaseBndrDmd. No priority right now.
+-------------------
+mkBottomCont ::StaticEnv -> SimplCont -> SimplCont
+-- ^ Given a continuation `cont`, return a `cont` /of the same type/,
+-- looking like @(case \<hole\> of {})@.
+--
+-- This is used when we are going to fill in the @<hole>@ with bottom.
+-- See (TC2,3) in Note [Trimming the continuation for bottoming functions]
+--
+-- Don't bother to trim, making a @case <hole> of {}@, if we have only
+-- an essentially-trivial continuation; e.g. @(<hole> \@ty |> co)@.
+mkBottomCont se cont = go cont
+ where
+ go k@(Stop {}) = k
+ go (TickIt t k') = TickIt t (go k')
+ go k@(CastIt { sc_cont = k' }) = k { sc_cont = go k' }
+ go k@(ApplyToTy { sc_cont = k' }) = k { sc_cont = go k' }
+ go k@(Select { sc_alts = [], sc_cont = Stop {} }) = k -- Optimisation only
+ go k | Stop res_ty _ _ <- stop_cont
+ , hole_ty `eqTypeIgnoringMultiplicity` res_ty
+ = stop_cont
+ | otherwise
+ = Select { sc_alts = []
+ , sc_bndr = mkWildValBinder OneTy hole_ty
+ , sc_dup = OkToDup
+ , sc_env = se
+ , sc_cont = stop_cont }
+ where
+ hole_ty = contHoleType k
+ stop_cont = contStop k
+
+
-------------------
mkArgInfo :: SimplEnv -> RuleEnv -> Id -> SimplCont -> ArgInfo
=====================================
testsuite/tests/simplCore/should_compile/T27261.hs
=====================================
@@ -0,0 +1,17 @@
+{-# OPTIONS_GHC -fno-full-laziness #-}
+
+module T27261 (foo) where
+
+import T27261_aux (myError)
+
+foo :: [String] -> (() -> Int) -> Int
+foo cs =
+ \ k -> ( case bar of
+ Just str -> let cs2 = case cs of { [] -> cs; _ -> "stack entry" : cs }
+ in myError cs2 str
+ Nothing -> \ c -> c () )
+ ( \ _ -> k () )
+
+bar :: Maybe String
+bar = Nothing
+{-# NOINLINE bar #-}
=====================================
testsuite/tests/simplCore/should_compile/T27261_aux.hs
=====================================
@@ -0,0 +1,7 @@
+{-# LANGUAGE BangPatterns #-}
+
+module T27261_aux (myError) where
+
+myError :: [String] -> String -> a
+myError !_ _ = undefined
+{-# NOINLINE myError #-}
=====================================
testsuite/tests/simplCore/should_compile/all.T
=====================================
@@ -541,3 +541,4 @@ test('T25883d', [extra_files(['T25883d_import.hs'])], multimod_compile_filter, [
test('T26681', normal, compile, ['-O'])
test('T26903', [grep_errmsg(r'reverse')], compile, ['-O -dno-typeable-binds -ddump-simpl -dsuppress-uniques -dsuppress-all'])
test('T26682', normal, multimod_compile, ['T26682', '-O -v0'])
+test('T27261', [extra_files(['T27261_aux.hs'])], multimod_compile, ['T27261', '-v0 -O'])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/8725aa42c3349c2c1bd51e7419454a9…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/8725aa42c3349c2c1bd51e7419454a9…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] 22 commits: hadrian: Build stage 2 cross compilers
by Sven Tennie (＠supersven) 29 May '26
by Sven Tennie (＠supersven) 29 May '26
29 May '26
Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC
Commits:
a539e303 by Matthew Pickering at 2026-05-29T13:21:40+02:00
hadrian: Build stage 2 cross compilers
* Most of hadrian is abstracted over the stage in order to remove the
assumption that the target of all stages is the same platform. This
allows the RTS to be built for two different targets for example.
* Abstracts the bindist creation logic to allow building either normal
or cross bindists. Normal bindists use stage 1 libraries and a stage 2
compiler. Cross bindists use stage 2 libararies and a stage 2
compiler.
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
New hadrian target:
* `binary-dist-dir-cross`: Build a cross compiler bindist (compiler =
stage 1, libraries = stage 2)
This commit also contains various changes to make stage2 compilers
feasible.
-------------------------
Metric Decrease:
ManyAlternatives
MultiComponentModulesRecomp
MultiLayerModulesRecomp
T10421
T12425
T12707
T13035
T13379
T15703
T16577
T18698a
T18698b
T18923
T1969
T21839c
T3294
T4801
T5030
T5321Fun
T5642
T783
T9198
T9872d
T9961
parsing001
T5321FD
T6048
T12227
T18140
T18282
T9233
T5631
T9630
-------------------------
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
Fix rebase: settings-use-distro-mingw is now staged
- - - - -
db70f834 by Matthew Pickering at 2026-05-29T13:21:40+02:00
ci: Test cross bindists
We remove the special logic for testing in-tree cross
compilers and instead test cross compiler bindists, like we do for all
other platforms.
- - - - -
9799f794 by Matthew Pickering at 2026-05-29T13:21:40+02:00
ci: Introduce CROSS_STAGE variable
In preparation for building and testing stage3 bindists we introduce the
CROSS_STAGE variable which is used by a CI job to determine what kind of
bindist the CI job should produce.
At the moment we are only using CROSS_STAGE=2 but in the future we will
have some jobs which set CROSS_STAGE=3 to produce native bindists for a
target, but produced by a cross compiler, which can be tested on by
another CI job on the native platform.
CROSS_STAGE=2: Build a normal cross compiler bindist
CROSS_STAGE=3: Build a stage 3 bindist, one which is a native compiler and library for the target
- - - - -
21b8c07a by Sven Tennie at 2026-05-29T13:21:40+02:00
ghc: Distinguish between having an interpreter and having an internal one
Otherwise, we fail with warnings when compiling tools. Actually, these
are related but different things:
- ghc can run an interpreter (either internal or external)
- ghc is compiled with an internal interpreter
- - - - -
3f57e535 by Matthew Pickering at 2026-05-29T13:21:40+02:00
hadrian: Refactor system-cxx-std-lib rules0
I noticed a few things wrong with the hadrian rules for `system-cxx-std-lib` rules.
* For `text` there is an ad-hoc check to depend on `system-cxx-std-lib` outside of `configurePackage`.
* The `system-cxx-std-lib` dependency is not read from cabal files.
* Recache is not called on the packge database after the `.conf` file is generated, a more natural place for this rule is `registerRules`.
Treating this uniformly like other packages is complicated by it not having any source code or a cabal file. However we can do a bit better by reporting the dependency firstly in `PackageData` and then needing the `.conf` file in the same place as every other package in `configurePackage`.
Fixes #25303
- - - - -
a3f4d490 by Sven Tennie at 2026-05-29T13:21:40+02:00
ci: Increase timeout for emulators
Test runs with emulators naturally take longer than on native machines.
Generate jobs.yml
- - - - -
51fb5b44 by Matthew Pickering at 2026-05-29T13:21:40+02:00
ci: Javascript don't set CROSS_EMULATOR
There is no CROSS_EMULATOR needed to run javascript binaries, so we
don't set the CROSS_EMULATOR to some dummy value.
- - - - -
abf225a1 by Sven Tennie at 2026-05-29T13:21:40+02:00
Javascript skip T23697
See #22355 about how HSC2HS and the Javascript target don't play well
together.
- - - - -
f50903fe by Sven Tennie at 2026-05-29T13:21:40+02:00
Mark T24602 as fragile
It was skipped before (due to CROSS_EMULATOR being set, which changed
for JS), so we don't make things worse by marking it as fragile.
- - - - -
f7ad5b50 by Sven Tennie at 2026-05-29T13:21:40+02:00
Windows needs NM_STAGE0 as well
The stage0 always needs nm.
- - - - -
78a2b35c by Sven Tennie at 2026-05-29T13:21:40+02:00
Add haddock to `NoEmulatorNeeded TimeoutIncrease`
- - - - -
d032d81d by Sven Tennie at 2026-05-29T13:21:40+02:00
Delete done TODO
- - - - -
b743be44 by Sven Tennie at 2026-05-29T13:24:34+02:00
Delete done TODO
- - - - -
ee341ea8 by Sven Tennie at 2026-05-29T13:24:34+02:00
Remove cross special case of performance flavour
- - - - -
3cc2bb69 by Sven Tennie at 2026-05-29T13:24:34+02:00
Delete obsolete iserv comment
- - - - -
5e0e25f8 by Sven Tennie at 2026-05-29T13:24:34+02:00
No more cross stage special cases
- - - - -
276d1ff6 by Sven Tennie at 2026-05-29T13:24:35+02:00
Fix commented out code
- - - - -
8e2ea904 by Sven Tennie at 2026-05-29T13:24:35+02:00
Remove trace log
- - - - -
86a51edf by Sven Tennie at 2026-05-29T13:24:35+02:00
configure.ac: Remove unnecessay blank
- - - - -
545763df by Sven Tennie at 2026-05-29T13:24:35+02:00
Drop Rules.Libffi
- - - - -
40637b2e by Sven Tennie at 2026-05-29T13:24:35+02:00
Delete targetSupportsGhciObjects
- - - - -
850bece6 by Sven Tennie at 2026-05-29T13:24:35+02:00
Fixup
- - - - -
62 changed files:
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- configure.ac
- distrib/configure.ac.in
- hadrian/README.md
- hadrian/bindist/config.mk.in
- + hadrian/cfg/system.config.host.in
- hadrian/cfg/system.config.in
- + hadrian/cfg/system.config.target.in
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- + hadrian/src/BindistConfig.hs
- hadrian/src/Builder.hs
- hadrian/src/Context.hs
- hadrian/src/Expression.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/Builder.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Hadrian/Haskell/Hash.hs
- hadrian/src/Hadrian/Oracles/TextFile.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Flavour.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/CabalReinstall.hs
- hadrian/src/Rules/Changelog.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Documentation.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Program.hs
- hadrian/src/Rules/Register.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Common.hs
- hadrian/src/Settings/Builders/Configure.hs
- hadrian/src/Settings/Builders/DeriveConstants.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Builders/SplitSections.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Performance.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Program.hs
- hadrian/src/Settings/Warnings.hs
- libraries/base/tests/all.T
- m4/fp_find_nm.m4
- testsuite/ghc-config/ghc-config.hs
- testsuite/tests/javascript/closure/all.T
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/ee753b795f301de084ff2a7fac6a8a…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/ee753b795f301de084ff2a7fac6a8a…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] 81 commits: Move the `Text.Read` implementation into `base`
by Sven Tennie (＠supersven) 29 May '26
by Sven Tennie (＠supersven) 29 May '26
29 May '26
Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC
Commits:
44cf9cd7 by Wolfgang Jeltsch at 2026-05-12T09:48:18-04:00
Move the `Text.Read` implementation into `base`
- - - - -
4ac3f7d6 by Vladislav Zavialov at 2026-05-12T09:49:03-04:00
EPA: Use AnnParen for tuples and sums
Summary of changes
* Do not use AnnParen in XListTy, replace it with EpToken "[" and "]"
* Specialise AnnParen to tuple/sums by dropping the AnnParensSquare
and keeping only AnnParens and AnnParensHash
* Use AnnParen in XExplicitTuple
* Use AnnParen in XExplicitTupleTy
* Use AnnParen in XTuplePat
* Use AnnParen in XExplicitSum (via AnnExplicitSum)
* Use AnnParen in XSumPat (via EpAnnSumPat)
This is a refactoring with no user-facing changes.
- - - - -
1bdcddec by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add minimal dlltool support to ghc-toolchain
The dlltool is a tool that can create dll import libraries from .def
files. These .def files list the exported symbols of dlls. Its somewhat
like gnu linker scripts, but more limited.
We will need dlltool to build the rts and ghc-internal libraries as DLLs
on Windows. The rts and ghc-internal libraries have a recursive
dependency on each other. Import libraries can be used to resolve
recursive dependencies between dlls. We will use an import library for
the rts when linking the ghc-internal library.
- - - - -
f7fc3770 by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add minimal dlltool support into ./configure
Find dlltool, and hopefully support finding it within the bundled llvm
toolchain on windows.
- - - - -
e4e22bfb by Duncan Coutts at 2026-05-12T09:49:48-04:00
Update the default host and target files for dlltool support
- - - - -
5666c8f9 by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add dlltool as a hadrian builder
Optional except on windows.
- - - - -
5e14fe3f by Duncan Coutts at 2026-05-12T09:49:48-04:00
Update and generate libHSghc-internal.def from .def.in file
The only symbol that the rts imports from the ghc-internal package now
is init_ghc_hs_iface. So the rts only needs an import lib that defines
that one symbol.
Also, remove the libHSghc-prim.def because it is redundant. The rts no
longer imports anything from ghc-prim.
Keep libHSffi.def for now. We may yet need it once it is clear how
libffi is going to be built/used for ghc.
- - - - -
3d91e4a6 by Duncan Coutts at 2026-05-12T09:49:48-04:00
Add rule to build libHSghc-internal.dll.a and link into the rts
On windows only, with dynamic linking.
This is needed because on windows, all symbols in dlls must be resolved.
No dangling symbols allowed. References to external symbols must be
explicit. We resolve this with an import library. We create an import
library for ghc-internal, a .dll.a file. This is a static archive
containing .o files that define the symbols we need, and crucially have
".idata" sections that specifies the symbols the dll imports and from
where.
Note that we do not install this libHSghc-internal.dll.a, and it does
not need to list all the symbols exported by that package. We create a
special purpose import lib and only use it when linking the rts dll, so
it only has to list the symbols that the rts uses from ghc-internal
(which is exactly one symbol: init_ghc_hs_iface).
- - - - -
c8dae539 by Alice Rixte at 2026-05-12T09:50:52-04:00
Script for downloading and copying `base-exports` file
- - - - -
5fab2238 by Wolfgang Jeltsch at 2026-05-12T21:24:27+03:00
Introduce a cache of home module name providers
This contribution introduces to the module graph a cache that maps home
module names to sets of units providing them and changes the finder to
use that cache. This is a performance optimization, especially for
multi-home-unit builds.
The particular changes are as follows:
* In `GHC.Unit.Module.Graph`, `ModuleGraph` is extended with a new
field `mg_home_module_name_providers_map`, exposed as
`mgHomeModuleNameProvidersMap`. This is a cache that assigns to each
home module name the set of IDs of home units that define it.
Operations that construct module graphs are updated such that this
cache stays synchronized.
* In `GHC.Unit.Finder`, `findImportedModule` is changed to pull
`mgHomeModuleNameProvidersMap` from `hsc_mod_graph` and pass it to
`findImportedModuleNoHsc`, which now does not search home units in
arbitrary order but prioritizes those units that the cache mentions
as potential providers of the requested module.
In addition, this contribution adds variants of the two multi-component
compiler performance tests that use 100 units instead of 20, because
with just 20 units the benefits from caching of home module name
providers are still negligible.
The following table shows the total time needed for running both
multi-component tests before and after this contribution and with
different numbers of units:
| # of units | Before | After |
|-----------:|-------:|------:|
| 20 | 0:12 | 0:12 |
| 100 | 0:47 | 0:42 |
| 200 | 3:05 | 2:08 |
Note that there seems to be a general overhead of 12 seconds that is not
attributable to the actual tests, so that the real running times should
be 12 seconds smaller than shown above.
Resolves #27055.
Metric Decrease:
MultiComponentModules
MultiComponentModulesRecomp
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
Co-authored-by: Fendor <fendor(a)posteo.de>
- - - - -
38b76b2f by Cheng Shao at 2026-05-13T17:48:48-04:00
testsuite: mark T22159 as fragile
This patch marks T22159 as fragile on Windows for issue described in #27248.
Before we get to the bottom of those failures, this unblocks newer
Windows runners.
- - - - -
50188615 by Ian Duncan at 2026-05-14T13:45:07+02:00
AArch64: use ASR not LSR for MO_U_Shr at W8/W16
The unsigned right shift (MO_U_Shr) for sub-word widths (W8, W16)
with a variable shift amount was emitting ASR (arithmetic/signed shift
right) after zero-extending with UXTB/UXTH. This should be LSR
(logical/unsigned shift right). After zero-extension the upper bits
happen to be 0 so ASR produces the same result, but it is semantically
wrong and would break if the zero-extension were ever optimized away.
Includes assembly output test (grep for lsr) and runtime test
verifying unsigned right shift of Word8 and Word16 values.
- - - - -
28666fbf by Vladislav Zavialov at 2026-05-19T12:44:05-04:00
Add type families: Tuple, Constraints, Tuple#, Sum# (#27179)
These type families map tuples of types to the corresponding Tuple<N>,
Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2:
Tuple (Int, Bool) = Tuple2 Int Bool
Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a)
Tuple# (Int#, Float#) = Tuple2# Int# Float#
Sum# (Int#, Float#) = Sum2# Int# Float#
See GHC Proposal #145 "Non-punning list and tuple syntax".
To make the Sum# instance at N=64 possible, this patch also introduces
the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64.
Metric Increase:
ghc_experimental_dir
- - - - -
41c2448b by Wen Kokke at 2026-05-19T12:44:53-04:00
rts: Add IPE event class for -l
This commit adds a new IPE event class to the -l RTS flag.
Previously, IPE events were enabled unconditionally.
However, the IPE events can easily grow to hundreds or thousands of megabytes.
With the new event class you can pass, e.g., -l-I to disable IPE events.
- - - - -
62536551 by Wen Kokke at 2026-05-19T12:44:53-04:00
ghc-internal: Add TraceFlags.traceIPE
- - - - -
e45312d1 by Wen Kokke at 2026-05-19T12:44:53-04:00
testsuite: Add test for TraceFlags.traceIpe
- - - - -
4768d9aa by Wen Kokke at 2026-05-19T12:44:53-04:00
ghc-internal: Add DebugFlags.ipe
- - - - -
bc1b5c69 by Wen Kokke at 2026-05-19T12:44:53-04:00
testsuite: Add test for DebugFlags.ipe
- - - - -
0da1543f by Duncan Coutts at 2026-05-19T12:45:37-04:00
Document removal of the signal-based interval timer
Update mentions within the RTS section of the users guide.
Add a changelog entry.
- - - - -
b2911514 by Duncan Coutts at 2026-05-19T12:45:37-04:00
Fix section for an recent changelog entry
- - - - -
d6d76a7a by David Eichmann at 2026-05-19T12:46:19-04:00
ghc-toolchain: implement llvm program versioning logic
- - - - -
2dd36fa3 by Wolfgang Jeltsch at 2026-05-20T04:49:52-04:00
Turn `Trustworthy` into `Safe` in `base` where possible
- - - - -
f4399dd1 by Wolfgang Jeltsch at 2026-05-20T04:50:37-04:00
Make the current `base` buildable with GHC 10.0
- - - - -
1a7de232 by Duncan Coutts at 2026-05-20T12:26:25-04:00
Hadrian: remove legacy rts .so symlinks
For compatibility with the old makefile based build system, hadrian had
rules to generate symlinks from unversioned to versioned names for the
rts .so/.dynlib file, like libHSrts-ghcx.y.so -> libHSrts-1.0.3-ghcx.y.so
We no longer need these symlinks since the makefile build system has
been retired some time ago. The need for these symlinks is awkward on
windows where we cannot (in practice) create symlinks. So rather than
make them conditional (non-windows), just remove them entirely.
- - - - -
286f1adf by fendor at 2026-05-20T12:27:09-04:00
Fix regression T27202: `:load` and `:add` work in GHCi
To fix the regression there are conceptually two major things that we
fix:
* We don't remove the `importDirs` from `interactive-session`
* When `:add`ing a module, we don't try to find them via PackageImports
* The PackageImport is wrong as we can't know the package-name at
this stage in ghc/UI.hs
What does it mean to not remove the `importDirs` from
`interactive-session`?
It means that, given some initial `DynFlags`, we will use those
`importDirs` in `interactive-session`.
The initial `DynFlags`, however, depend on how you initialise the GHC
session.
For a simple session, initialised by
ghc -isrc -this-unit-id main
It is simple, just use the `DynFlags` given on the cli.
Thus, `main` and `interactive-session` will have the same `DynFlags`,
except for the `homeUnitId` and `interactive-session` depends on `main`
by construction of the GHCi session.
What about a multiple home unit session, though?
ghc -unit @unit1 -unit @unit2
What are the `DynFlags` in this cli invocation? It shouldn't be either
`@unti1` nor `@unit2`, as the order shouldn't matter or any other
implicit condition.
For consistency, we decide that the initial `DynFlags` are the top
`DynFlags` on the cli, ignoring `-unit` flags.
Thus, in this example, there are no `importsDirs` regardless of what we
might find in `@unit1` and `@unit2`.
But in this invocation:
ghc -isrc -unit @unit1 -unit @unit2
The `interactive-session` will have the `importsDirs` `src`.
Note, `-isrc` will be inherited in `@unit1` and `@unit2`, so you need to
explicitly use `-i` to clear the `importsDirs`, in order to avoid
accidentally adding `src` as an import directory to all other home
units.
This fix has been made possible by the improvements introduced in
!15888, which avoids ambiguity when a home unit shares the `importsDirs`
with the `interactive-session`, on top of being much faster for multiple
home units.
Adds regression tests for T27202 for `:load`ing and `:add`ing modules
that are located in import directories.
- - - - -
728662de by fendor at 2026-05-20T12:27:09-04:00
Use home unit package db stacks in GHCi prompt and session unit
In order to import modules from home unit dependencies (e.g., `Data.Map`),
the ghci prompt unit needs to populate its `UnitState`.
This is tricky to handle correctly, which `PackageDBFlag`s should we use
to populate the `UnitState`?
We decide, the most intuitive solution for users is to depend on all
`PackageDBFlag`s, so that any dependency can be imported in GHCi.
This assumes consistency in the `PackageDBFlag`s, so no two home units
specify `PackageDBFlag`s that are inconsistent with each other.
We could simply concat all the `PackageDBFlag`s of the existing home
units, but later `PackageDBFlag`s shadow earlier ones, leading to the
last processed home units' `PackageDBFlag`s to shadow the earlier ones.
This is hard to fix, we need to give users the capability to provide ghc
options for the ghci prompt home unit.
However, as this is considerably more work, we decided on an
approximation that should work out most of the time.
Package Db stacks in cabal and stack follow a certain structure:
-no-user-package-db > -package-db $cabal-store > -package-db $local-db
The first two arguments are always the same, namely the
`-no-user-package-db` and `-package-db`.
We compute the longest common prefix over all home units, and use that
as the start of the package db stack. Then, over the rest of the
`PackageDBFlag`s, we simply take the union and append them to our
initial stack.
We assume, that the rest of package dbs only defines very few, "local"
units that are usually not shadowing each other.
This allows us to get a relatively consistent package database stack for
the ghci prompt home unit.
Similar reasoning applies to the session unit in order to add modules to
the session and have dependencies available in the module.
We do something similar for `-package` flags, to make sure only the
correct units are actually visible in the ghci session.
This time, we simply take the union of all `PackageFlag`s, allowing us
to import modules from the home unit dependencies.
In the future, it would be beneficial to allow the user to provide the
exact ghc options to control the visibilities. For now, this will have
to do.
- - - - -
740d89a0 by Simon Peyton Jones at 2026-05-20T17:20:44-04:00
Do not use mkCast during typechecking
This commit fixes #27219. The problem was that the typechecker was using
`mkCast`, whose assertion checks legitimately fail when applied to types
that contain unification variables.
- - - - -
a50fdb06 by Simon Peyton Jones at 2026-05-20T17:20:45-04:00
Major refactor of the Simplifier
The main payload of this patch is to refactor the Simplifer to avoid
repeated simplification when using Plan (AFTER) for rule rewrites.
The need for this was shown up by #26989.
See Note [Avoid repeated simplification] in GHC.Core.Opt.Simplify.Iteration.
Related refactoring:
* Refactor the two fields `sc_dup` and `sc_env` in `ApplyToVal` into one, `sc_env`.
Reason: the envt is irrelevant in the "simplified" case, so the data type describes
the possiblitiies much more accurately now.
* Some refactoring in `knownCon` to split off `wrapDataConFloats`.
* Refactor `lookupRule` and its auxiliary functions to return `RuleMatch`,
a new data type. See Note [data RuleMatch] in GHC.Core. Ditto for BuiltinRule.
This RuleMatch returns fragments of the target in rm_args and rm_floats,
leaving `rm_rhs` to be the stuff from the RULE itself.
Doing this has routine consequences in GHC.Core.Opt.ConstantFold. Many changes
there but all routine.
* When doing occurrence analysis on RULEs, make the occ-info on the rule
binders relate just to the RHS, not the LHS. See (OUR1) in
Note Note [OccInfo in unfoldings and rules]
This means that Lint must not complain about the fact that the patterns
in the RULE mentions binders that are marked dead.
See Note [Dead occurrences] in GHC.Core.Lint.
I changed the Core pretty-printer so that it didn't suppress dead binders,
else I can't see those binders in RULEs. That led to quite a lot of testsuite wibbles.
* Refactor FloatBinds, so that it is used both by
`exprIsConApp_mabye` and by `lookupRule`
* Move the definition of FloatBinds out of GHc.Core.Make, into GHC.Core.
* Add FloatTick as an extra constructor.
* Refactor `lookupRule` to use `FloatBinds` instead of `BindWrapper`.
This refactor just shares more code.
(Rename GHC.Core.Opt.FloatOut.FloatBinds to FloatLets, to avoid gratuitious
name clash with GHC.Core.FloatBinds.)
Corecion optimisation
* In simpleOpt, when composing coercions, call new function `optTransCo`.
This is much lighter weight than full blown coercion optimisation.
* Make `GHC.Core.Opt.Arity.pushCoValArg` and `pushCoTyArg` return the
coercionLKind of the coercion. This saves recomputing that coercionLKind
at the key call sites in GHC.Core.Opt.Simplify.Iteration.pushCast.
* Rename `addCoerce` in GHC.Core.Simplify.Iteration to become `pushCast`.
* In the `ApplyToVal` case of `pushCast` we had a very unsavoury call to `simplArg`.
I eliminated it by adding a field `sc_cast` to `ApplyToVal` that records any
pending casts. Much nicer now. See Note [The sc_cast field of ApplyToVal].
* Don't optimise coercions if the type-substitution is empty.
See Note [Optimising coercions] in GHC.Core.Opt.Simplify.Iteration.
The fix for #26838 is dramatic. For the test in perf/compiler/T26839 we have
Compiler allocs: Before: 7,363M
After: 688M
Compile time goes down generally. Here are compiler-alloc changes
over 0.5%:
CoOpt_Read(normal) 729,184,920 -0.7%
CoOpt_Singletons(normal) 666,916,960 -4.6% GOOD
LargeRecord(normal) 1,227,056,876 +1.1%
T12227(normal) 256,827,604 -4.6% GOOD
T12425(optasm) 76,879,410 -0.8%
T12545(normal) 787,826,918 -10.8% GOOD
T12707(normal) 775,186,464 -0.9%
T13253(normal) 318,599,596 -0.8%
T14766(normal) 685,857,320 -1.0%
T15304(normal) 1,123,333,422 -2.2%
T15630(normal) 123,142,330 -2.6%
T15630a(normal) 123,092,100 -2.6%
T15703(normal) 299,751,682 -2.9% GOOD
T17516(normal) 964,072,280 +1.0%
T18223(normal) 367,016,820 -6.2% GOOD
T18730(optasm) 130,643,770 -3.3% GOOD
T20261(normal) 535,608,584 -0.7%
T21839c(normal) 340,340,436 -0.9%
T24984(normal) 85,568,392 -1.9%
T3064(normal) 174,631,992 -1.2%
T3294(normal) 1,215,886,432 -0.7%
T5030(normal) 141,449,704 -17.2% GOOD
T5321Fun(normal) 258,484,744 -1.9%
T8095(normal) 770,532,232 -2.7%
T9630(normal) 858,423,408 -14.5% GOOD
T9872c(normal) 1,591,709,448 +0.7%
info_table_map_perf(normal) 19,700,614,458 -1.3%
geo. mean -0.7%
minimum -17.2%
maximum +1.1%
However, strangely there seems to be a 5.0% increase in CoOpt_Read in
the x86_64-linux-fedora43-validate+debug_info+ubsan job, although
there generally a /decrease/ in this test in other builds. The baseline
value looks strange. Anyway I'll just accept it.
Metric Decrease:
CoOpt_Singletons
T12227
T12545
T12707
T15703
T18223
T18730
T21839c
T5030
T9630
Metric Increase:
CoOpt_Read
- - - - -
834623d4 by Mrjtjmn at 2026-05-20T17:21:41-04:00
users-guide: Fix weird notation in "Summary of stolen syntax"
- - - - -
6f9d7c71 by Markus Läll at 2026-05-21T15:25:34-04:00
Use "grimily" instead of "grimly"
Fixes https://gitlab.haskell.org/ghc/ghc/-/issues/27221
- - - - -
50e999ca by fendor at 2026-05-21T15:26:18-04:00
Speed up 'closure' computation in `ghc-pkg`
Cache the set of already seen `UnitId`s and use `Set` operations to
speed up 'closure' computation.
Further simplify the implementation of 'closure' to account for the
actual usage.
As a consequence, we rename 'closure' to 'brokenPackages' to reflect its
purpose better after the simplification.
- - - - -
7ecc6184 by sheaf at 2026-05-21T15:27:10-04:00
TcMPluginHandling: be more lenient when no plugins
This change ensures that, if a function such as 'typecheckModule' was
invoked with 'NoTcMPlugins', GHC doesn't spuriously complain about TcM
plugins having already been stopped, as there were none to start with.
- - - - -
72c8de5c by Simon Jakobi at 2026-05-23T18:41:42-04:00
Implement List.elem via foldr
...in order to allow specialization to Eq instances.
The implementation of notElem is updated for consistency.`
Corresponding CLC proposal:
https://github.com/haskell/core-libraries-committee/issues/412
Addresses #27096.
- - - - -
3268c610 by Alan Zimmerman at 2026-05-23T18:42:30-04:00
EPA: Fix span for qualified multiline string
Fix the span for a qualified multiline string like
Text."""
I'm a multiline
Text value
!
"""
to extend to the end of the entire string, not just the first line.
Closes #27274
- - - - -
1f096790 by Alan Zimmerman at 2026-05-23T18:43:20-04:00
EPA: Fix exact printing namespace-specified wildcards
Ensures correct printing of imports of the form
import Data.Bool (data True(data ..))
import Data.Bool (data True(type ..))
Closes #27291
- - - - -
56ada7c0 by Mrjtjmn at 2026-05-23T18:44:19-04:00
Fix ambiguous syntax of BangPatterns in users guide
Update documentation for the BangPatterns extension to specify
how surrounding whitespace affects interpretation of `!`.
* Only when there is whitespace before `!` and no whitespace after,
it is recognized as a BangPattern.
* Other cases `⟨varid⟩!⟨varid⟩`, `⟨varid⟩ ! ⟨varid⟩`, `⟨varid⟩! ⟨varid⟩`
are treated as infix operators.
- - - - -
579aa0b7 by Simon Jakobi at 2026-05-25T16:31:26-04:00
Ensure that SetOps.{minusList,unionListsOrd} can be specialized
...by marking them INLINABLE. Haddock allocates 0.1–0.3% less as a
result.
This also removes some redundant constraints on unionListsOrd.
- - - - -
cccf45da by Cheng Shao at 2026-05-25T16:32:13-04:00
wasm: ensure post-linker output is synchronous ESM
This patch fixes wasm backend's post-linker output script to ensure
it's synchronous ESM and doesn't use top-level await, which doesn't
work in ServiceWorkers. Fixes #27257.
- - - - -
8db331a3 by Zubin Duggal at 2026-05-26T04:54:03-04:00
Update to semaphore-compat 2.0.0 using v2 of the protocol
On Linux and other POSIX platforms, GHC's -jsem jobserver client now
speaks v2 of the semaphore-compat protocol, which uses Unix domain
sockets in place of POSIX named semaphores. This avoids the libc-ABI
issues that affected the old implementation. Windows is unaffected
and continues to use the v1 protocol (Win32 named semaphores); its
reported protocol version remains v1.
When GHC receives a -jsem name whose protocol version it does not
support, it emits a -Wsemaphore-version-mismatch warning and falls
back to -j<N> rather than crashing. ghc --info exposes the supported
version in a new "Semaphore version" entry so cabal-install can detect
a mismatch before invoking GHC.
Users on a cabal-install that predates the v2 update will continue to
build successfully on Linux/POSIX, but will lose the cross-process
-jsem coordination and fall back to -j<N> per GHC invocation. Users
must upgrade to a cabal-install that supports protocol v2 to recover
full parallelism.
Also fix a leak in cleanupSem (#27253): cleanupSem used to snapshot
heldTokens and release them before killing the loop, while the loop's
in-flight acquire/release children could still be mutating it.
Cleanup now runs inside the loop's own exit handler, after draining
the active child via a new activeChild TVar, so the snapshot has no
concurrent mutator.
See also:
- GHC proposal amendment: https://github.com/ghc-proposals/ghc-proposals/pull/673
- cabal-install patch: https://github.com/haskell/cabal/pull/11628
- semaphore-compat MR: https://gitlab.haskell.org/ghc/semaphore-compat/-/merge_requests/8
Bump semaphore-compat submodule to 2.0.0
Fixes #25087 and #27253
- - - - -
17be4f1f by Alan Zimmerman at 2026-05-26T04:54:52-04:00
EPA: Record semicolons in HsModifier
Ensure the semi colons are captured in the ParsedSource for code like
%True;; %False;
instance C D
It makes HsModifier (and hence HsModifierOf) LocatedA, so the semi
colons can be recorded as [TrailingAnn]
Also rename pprHsModifiers to pprLHsModifiers to match.
Closes #27294
- - - - -
8f991755 by fendor at 2026-05-26T11:02:52-04:00
Revert prog003 acceptance
We thought the commit 286f1adff3e78d775ff325caff71d0cee25d710b fixed the
test, but due to changes to ghci, modules loaded during the GHCi
session, the test was actually no longer testing what it set out to do,
"fixing" the broken test.
As modules are added to the `interactive-session` home unit, the object code needs
to be compiled with `-this-unit-id interactive-session`, otherwise the
object code won't be used.
Once this has been fixed in the test, the test fails as expected again.
- - - - -
277a3687 by mangoiv at 2026-05-26T11:03:40-04:00
libraries/process: bump submodule to v1.6.29.0
This submodule bump resolves a segfault on macos 15.
Fixes #27144
- - - - -
6779bb0c by mangoiv at 2026-05-26T11:03:40-04:00
libraries/unix: in submodule, don't pick branch 2.7
The 2.7 branch is outdated and the module has been advanced far beyond
it anyway, so remove that line.
- - - - -
4a645683 by Simon Peyton Jones at 2026-05-27T21:41:59-04:00
Trim the continuation in mkDupableContWithDmds
When there are no remaining argument demands, it means the application
is bottoming. In this case, we can trim the continuation to avoid the
panic that was observed in #27261.
See Note [Trimming the continuation for bottoming functions] in
GHC.Core.Opt.Simplify.Iteration.
- - - - -
8ab506ff by Cheng Shao at 2026-05-27T21:42:47-04:00
ghci: fix module name string lifetime in hs_hpc_module invocation
This patch makes hpcAddModule pass a properly malloced module name
string to hs_hpc_module, instead of using useAsCString which causes
use-after-free of module name string. Fixes #27297.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
b0233814 by sheaf at 2026-05-27T21:43:31-04:00
Relax acceptance threshold for T10421
As seen in #27289, the 1% acceptance threshold for this text was
overly narrow, resulting in spurious test failures. This commit widens
the acceptance threshold to 2%. Fixes #27289.
- - - - -
63ce5770 by Luite Stegeman at 2026-05-28T12:23:35-04:00
Fixes for black holes
- suspend duplicate work for eager black holes
- detect eager black holes in checkBlockingQueues
- don't overwrite existing black holes even if they're not
in an eager blackhole frame
- don't deadlock on self when thunk is already blackholed
Fixes #26936
- - - - -
037a80dc by Tom McLaughlin at 2026-05-28T12:24:36-04:00
Event/Windows.hsc: rethrow exceptions in overlapped IO
This prevents the WinIO manager from swallowing exceptions in overlapped IO. It
was added to make WinIO support possible in the `network` library. See
https://gitlab.haskell.org/ghc/ghc/-/issues/27283.
We also bump __IO_MANAGER_WINIO__ to 2 so libraries can gate on this using CPP.
- - - - -
2d53bcdb by Wolfgang Jeltsch at 2026-05-28T12:25:21-04:00
Allow `downsweep` to use nodes of an existing module graph
To this end, `downsweep` has not been able to use the nodes of a module
graph obtained from a previous downsweeping round. In some GHC API
applications, downsweeping is performed somewhat incrementally and
therefore could profit from reusing such existing results. This
contribution makes this possible.
Resolves #27054.
Co-authored-by: Matthew Pickering <matthewtpickering(a)gmail.com>
- - - - -
f4fbb583 by Simon Jakobi at 2026-05-28T12:26:04-04:00
Add regression test for T11226
Closes #11226.
- - - - -
ed29a5e6 by Sven Tennie at 2026-05-28T17:30:36-04:00
Add optional config setting for LibDir (#19174)
Previously, the `libDir` was derived from `topDir`. This won't work for
inplace stage2 cross-compilers where binaries and libraries are in
different stage dirs (`_build/stage1/` for executables and
`_build/stage2` for libraries).
`LibDir` is set in the inplace `settings` files. For bindists, we
generate a new `settings` file with no `LibDir` entry. GHC then defaults
to use `topDir` as `libDir` again. This keeps the bindist relocatable.
If `LibDir` is a relative path, it is interpreted relatively to
`topDir`.
The global package db is part of the `lib/` folder. If we want to point
for inplace cross-compilers to the succeeding stage's folder, this is
done by setting `LibDir`. Thus, the global package db must be found
relative to `libDir`` (which may default to `topDir` or be set by
`LibDir`).
The complexity of settings becomes scary. So, add a test to ensure
`LibDir` works as expected.
- - - - -
8339cf8f by Sven Tennie at 2026-05-28T17:30:36-04:00
Add Haddock to FileSettings
Helping to understand the fields' meanings without deeper analyses.
- - - - -
4ce251e4 by Sylvain Henry at 2026-05-28T17:31:39-04:00
foundation test: skip signed minBound `quot` (-1) (#27222)
`minBound `quot` (-1)` for fixed-width signed integers is platform
dependent: the mathematical result -minBound is not representable in
the type. On x86, IDIV traps; LLVM's sdiv is undefined behaviour in
this case; on AArch64/RISC-V, SDIV wraps to minBound.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply(a)anthropic.com>
- - - - -
b8ba7e61 by Simon Jakobi at 2026-05-28T17:32:23-04:00
Prevent dictionary-passing in checkTyEqRhs
...by pre-specializing it to TcM.
Previously, wherever checkTyEqRhs was used in other modules, the
Core showed dictionary passing ($fMonadIOEnv). The added SPECIALIZE
pragma prevents this.
- - - - -
39a0d26d by Matthew Pickering at 2026-05-29T09:00:48+02:00
Add missing req_interp modifier to T18441fail3 and T18441fail19
These tests require the interpreter but they were failing in a different
way with the javascript backend because the interpreter was disabled and
stderr is ignored by the test.
- - - - -
7bbb8ca6 by Matthew Pickering at 2026-05-29T09:00:49+02:00
packaging: correctly propagate build/host/target to bindist configure script
At the moment the host and target which we will produce a compiler for
is fixed at the initial configure time. Therefore we need to persist
the choice made at this time into the installation bindist as well so we
look for the right tools, with the right prefixes at install time.
In the future, we want to provide a bit more control about what kind of
bindist we produce so the logic about what the host/target will have to
be written by hadrian rather than persisted by the configure script. In
particular with cross compilers we want to either build a normal stage 2
cross bindist or a stage 3 bindist, which creates a bindist which has a
native compiler for the target platform.
Fixes #21970
- - - - -
ca9bf9d0 by Matthew Pickering at 2026-05-29T09:00:49+02:00
hadrian: Fill in more of the default.host toolchain file
When you are building a cross compiler this file will be used to build
stage1 and it's libraries, so we need enough information here to work
accurately. There is still more work to be done (see for example, word
size is still fixed).
- - - - -
a07b3b4b by Matthew Pickering at 2026-05-29T09:00:49+02:00
hadrian: Disable docs when cross compiling
Before there were a variety of ad-hoc places where doc building was
disabled when cross compiling.
* Some CI jobs sets --docs=none in gen_ci.hs
* Some CI jobs set --docs=none in .gitlab/ci.sh
* There was some logic in hadrian to not need the ["docs"] target when
making a bindist.
Now the situation is simple:
* If you are cross compiling then defaultDocsTargets is empty by
default.
In theory, there is no reason why we can't build documentation for cross
compiler bindists, but this is left to future work to generalise the
documentation building rules to allow this (#24289)
- - - - -
79a4a4b3 by Matthew Pickering at 2026-05-29T09:59:25+02:00
hadrian: Build stage 2 cross compilers
* Most of hadrian is abstracted over the stage in order to remove the
assumption that the target of all stages is the same platform. This
allows the RTS to be built for two different targets for example.
* Abstracts the bindist creation logic to allow building either normal
or cross bindists. Normal bindists use stage 1 libraries and a stage 2
compiler. Cross bindists use stage 2 libararies and a stage 2
compiler.
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
New hadrian target:
* `binary-dist-dir-cross`: Build a cross compiler bindist (compiler =
stage 1, libraries = stage 2)
This commit also contains various changes to make stage2 compilers
feasible.
-------------------------
Metric Decrease:
ManyAlternatives
MultiComponentModulesRecomp
MultiLayerModulesRecomp
T10421
T12425
T12707
T13035
T13379
T15703
T16577
T18698a
T18698b
T18923
T1969
T21839c
T3294
T4801
T5030
T5321Fun
T5642
T783
T9198
T9872d
T9961
parsing001
T5321FD
T6048
T12227
T18140
T18282
T9233
T5631
T9630
-------------------------
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
Fix rebase: settings-use-distro-mingw is now staged
- - - - -
7bbcc0ba by Matthew Pickering at 2026-05-29T09:59:25+02:00
ci: Test cross bindists
We remove the special logic for testing in-tree cross
compilers and instead test cross compiler bindists, like we do for all
other platforms.
- - - - -
f6418f81 by Matthew Pickering at 2026-05-29T09:59:25+02:00
ci: Introduce CROSS_STAGE variable
In preparation for building and testing stage3 bindists we introduce the
CROSS_STAGE variable which is used by a CI job to determine what kind of
bindist the CI job should produce.
At the moment we are only using CROSS_STAGE=2 but in the future we will
have some jobs which set CROSS_STAGE=3 to produce native bindists for a
target, but produced by a cross compiler, which can be tested on by
another CI job on the native platform.
CROSS_STAGE=2: Build a normal cross compiler bindist
CROSS_STAGE=3: Build a stage 3 bindist, one which is a native compiler and library for the target
- - - - -
e7a430f9 by Matthew Pickering at 2026-05-29T09:59:25+02:00
hadrian: Refactor system-cxx-std-lib rules0
I noticed a few things wrong with the hadrian rules for `system-cxx-std-lib` rules.
* For `text` there is an ad-hoc check to depend on `system-cxx-std-lib` outside of `configurePackage`.
* The `system-cxx-std-lib` dependency is not read from cabal files.
* Recache is not called on the packge database after the `.conf` file is generated, a more natural place for this rule is `registerRules`.
Treating this uniformly like other packages is complicated by it not having any source code or a cabal file. However we can do a bit better by reporting the dependency firstly in `PackageData` and then needing the `.conf` file in the same place as every other package in `configurePackage`.
Fixes #25303
- - - - -
dc3b627e by Sven Tennie at 2026-05-29T09:59:25+02:00
ci: Increase timeout for emulators
Test runs with emulators naturally take longer than on native machines.
Generate jobs.yml
- - - - -
4826c659 by Sven Tennie at 2026-05-29T09:59:25+02:00
ghc: Distinguish between having an interpreter and having an internal one
Otherwise, we fail with warnings when compiling tools. Actually, these
are related but different things:
- ghc can run an interpreter (either internal or external)
- ghc is compiled with an internal interpreter
- - - - -
a7b4f244 by Matthew Pickering at 2026-05-29T09:59:25+02:00
ci: Javascript don't set CROSS_EMULATOR
There is no CROSS_EMULATOR needed to run javascript binaries, so we
don't set the CROSS_EMULATOR to some dummy value.
- - - - -
29f299cb by Sven Tennie at 2026-05-29T09:59:25+02:00
Javascript skip T23697
See #22355 about how HSC2HS and the Javascript target don't play well
together.
- - - - -
545dd0ca by Sven Tennie at 2026-05-29T09:59:25+02:00
Mark T24602 as fragile
It was skipped before (due to CROSS_EMULATOR being set, which changed
for JS), so we don't make things worse by marking it as fragile.
- - - - -
4d5808e5 by Sven Tennie at 2026-05-29T09:59:25+02:00
Windows needs NM_STAGE0 as well
The stage0 always needs nm.
- - - - -
33e9fa6e by Sven Tennie at 2026-05-29T09:59:25+02:00
Add haddock to `NoEmulatorNeeded TimeoutIncrease`
- - - - -
63924f13 by Sven Tennie at 2026-05-29T09:59:25+02:00
Delete done TODO
- - - - -
9b526601 by Sven Tennie at 2026-05-29T09:59:25+02:00
Delete done TODO
- - - - -
21d6b4ce by Sven Tennie at 2026-05-29T09:59:25+02:00
Remove cross special case of performance flavour
- - - - -
d2102d9f by Sven Tennie at 2026-05-29T09:59:25+02:00
Delete obsolete iserv comment
- - - - -
a51ad5a2 by Sven Tennie at 2026-05-29T09:59:25+02:00
No more cross stage special cases
- - - - -
33e20409 by Sven Tennie at 2026-05-29T09:59:25+02:00
Delete libffi-tarballs
Must have been an accidential commit...
- - - - -
44978dac by Sven Tennie at 2026-05-29T09:59:26+02:00
Fix commented out code
- - - - -
57728556 by Sven Tennie at 2026-05-29T09:59:26+02:00
Remove trace log
- - - - -
970bcc27 by Sven Tennie at 2026-05-29T09:59:26+02:00
configure.ac: Remove unnecessay blank
- - - - -
8c61cf03 by Sven Tennie at 2026-05-29T09:59:26+02:00
Drop Rules.Libffi
- - - - -
0cdf0d46 by Sven Tennie at 2026-05-29T09:59:26+02:00
Delete targetSupportsGhciObjects
- - - - -
ee753b79 by Sven Tennie at 2026-05-29T09:59:26+02:00
Fixup
- - - - -
421 changed files:
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitmodules
- + changelog.d/T26979
- + changelog.d/T27202
- + changelog.d/T27261
- + changelog.d/bump-process
- changelog.d/dynamic-trace-flags
- + changelog.d/elem-via-foldr-27096
- + changelog.d/fix-blackhole-handling
- + changelog.d/ghc-api-epa-parens
- + changelog.d/ghc-pkg-faster-closure
- + changelog.d/ipe-event-class
- + changelog.d/jobserver-leak-fix
- + changelog.d/lib-add-tuple-tyfam-27179
- + changelog.d/libdir-setting
- + changelog.d/module-graph-reuse-in-downsweep
- + changelog.d/more-efficient-home-unit-imports-finding
- + changelog.d/no-more-timer-signal
- + changelog.d/rts_symlinks.md
- + changelog.d/semaphore-v2
- + changelog.d/wasm-fix-serviceworker
- + changelog.d/windows-rethrow-overlapped-exception
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion/Opt.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/FloatIn.hs
- compiler/GHC/Core/Opt/FloatOut.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/List/SetOps.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Interpreter.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeAction.hs
- compiler/GHC/Driver/MakeSem.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/IfaceToCore.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/Types.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/Constants.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/StgToJS/Ids.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Types/Unique/Supply.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/State.hs
- compiler/Language/Haskell/Syntax/Binds.hs
- compiler/Language/Haskell/Syntax/Decls.hs
- compiler/Language/Haskell/Syntax/Decls/Foreign.hs
- compiler/Language/Haskell/Syntax/Pat.hs
- compiler/Language/Haskell/Syntax/Type.hs
- configure.ac
- distrib/configure.ac.in
- docs/users_guide/exts/stolen_syntax.rst
- docs/users_guide/exts/template_haskell.rst
- docs/users_guide/profiling.rst
- docs/users_guide/runtime_control.rst
- docs/users_guide/using-warnings.rst
- docs/users_guide/using.rst
- ghc/GHCi/UI.hs
- ghc/Main.hs
- hadrian/README.md
- hadrian/bindist/config.mk.in
- hadrian/cfg/default.host.target.in
- hadrian/cfg/default.target.in
- + hadrian/cfg/system.config.host.in
- hadrian/cfg/system.config.in
- + hadrian/cfg/system.config.target.in
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- + hadrian/src/BindistConfig.hs
- hadrian/src/Builder.hs
- hadrian/src/Context.hs
- hadrian/src/Expression.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/Builder.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Hadrian/Haskell/Hash.hs
- hadrian/src/Hadrian/Oracles/TextFile.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Flavour.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/CabalReinstall.hs
- hadrian/src/Rules/Changelog.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Documentation.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Program.hs
- hadrian/src/Rules/Register.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Common.hs
- hadrian/src/Settings/Builders/Configure.hs
- hadrian/src/Settings/Builders/DeriveConstants.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Builders/SplitSections.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Performance.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Program.hs
- hadrian/src/Settings/Warnings.hs
- libraries/base/changelog.md
- libraries/base/src/Control/Exception.hs
- libraries/base/src/Control/Monad/IO/Class.hs
- libraries/base/src/Data/Data.hs
- libraries/base/src/Data/Fixed.hs
- libraries/base/src/Data/Functor/Classes.hs
- libraries/base/src/Data/Functor/Compose.hs
- libraries/base/src/Data/List/NonEmpty.hs
- libraries/base/src/Data/Version.hs
- libraries/base/src/GHC/Base.hs
- libraries/base/src/GHC/ByteOrder.hs
- libraries/base/src/GHC/Exts.hs
- libraries/base/src/Numeric.hs
- libraries/base/src/Prelude.hs
- libraries/base/src/System/IO.hs
- libraries/base/src/System/Timeout.hs
- libraries/base/src/Text/Read.hs
- libraries/base/tests/all.T
- libraries/base/tests/perf/ElemNoFusion_O1.stderr
- libraries/base/tests/perf/ElemNoFusion_O2.stderr
- + libraries/ghc-boot/GHC/Data/ShortByteString.hs
- libraries/ghc-boot/GHC/Settings/Utils.hs
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-experimental/src/Data/Sum/Experimental.hs
- libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
- libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-internal/src/GHC/Internal/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Windows.hsc
- libraries/ghc-internal/src/GHC/Internal/Exts.hs
- libraries/ghc-internal/src/GHC/Internal/IO/Encoding.hs
- libraries/ghc-internal/src/GHC/Internal/List.hs
- libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc
- − libraries/ghc-internal/src/GHC/Internal/Text/Read.hs
- libraries/ghc-internal/src/GHC/Internal/Types.hs
- libraries/ghci/GHCi/Coverage.hs
- libraries/ghci/GHCi/Run.hs
- libraries/process
- libraries/semaphore-compat
- m4/find_llvm_prog.m4
- m4/fp_find_nm.m4
- m4/fp_setup_windows_toolchain.m4
- m4/ghc_toolchain.m4
- m4/prep_target_file.m4
- rts/.gitignore
- rts/IPE.c
- rts/Messages.c
- rts/RtsFlags.c
- rts/ThreadPaused.c
- rts/Threads.c
- rts/Trace.c
- rts/Trace.h
- rts/Updates.h
- rts/include/rts/EventLogWriter.h
- rts/include/rts/Flags.h
- rts/include/rts/storage/ClosureMacros.h
- + rts/win32/libHSghc-internal.def.in
- testsuite/ghc-config/ghc-config.hs
- testsuite/tests/MiniQuickCheck.hs
- testsuite/tests/codeGen/should_compile/T25177.stderr
- + testsuite/tests/codeGen/should_gen_asm/aarch64-shl-subword.asm
- + testsuite/tests/codeGen/should_gen_asm/aarch64-shl-subword.hs
- + testsuite/tests/codeGen/should_gen_asm/aarch64-ushr-subword.asm
- + testsuite/tests/codeGen/should_gen_asm/aarch64-ushr-subword.hs
- testsuite/tests/codeGen/should_gen_asm/all.T
- + testsuite/tests/codeGen/should_run/aarch64-subword-ops.hs
- + testsuite/tests/codeGen/should_run/aarch64-subword-ops.stdout
- + testsuite/tests/codeGen/should_run/aarch64-ushr-subword-run.hs
- + testsuite/tests/codeGen/should_run/aarch64-ushr-subword-run.stdout
- testsuite/tests/codeGen/should_run/all.T
- testsuite/tests/deSugar/should_compile/T13208.stdout
- testsuite/tests/diagnostic-codes/codes.stdout
- testsuite/tests/driver/fat-iface/fat014.stdout
- testsuite/tests/ffi/should_run/all.T
- testsuite/tests/ghc-api/T25121_status.stdout
- + testsuite/tests/ghc-api/T27273.hs
- testsuite/tests/ghc-api/all.T
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/A.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/B.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/C.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/D.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/X.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/Y.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.modules/Z.hs
- + testsuite/tests/ghc-api/downsweep/IncrementalDownsweep.stdout
- testsuite/tests/ghc-api/downsweep/OldModLocation.hs
- testsuite/tests/ghc-api/downsweep/PartialDownsweep.hs
- testsuite/tests/ghc-api/downsweep/all.T
- testsuite/tests/ghc-api/fixed-nodes/InterfaceModuleGraph.hs
- + testsuite/tests/ghc-api/settings/LibDir.hs
- + testsuite/tests/ghc-api/settings/LibDir.stdout
- + testsuite/tests/ghc-api/settings/all.T
- testsuite/tests/ghc-e/should_fail/all.T
- + testsuite/tests/ghci/prog-mhu006/Makefile
- + testsuite/tests/ghci/prog-mhu006/a/A.hs
- + testsuite/tests/ghci/prog-mhu006/all.T
- + testsuite/tests/ghci/prog-mhu006/b/B.hs
- + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.script
- + testsuite/tests/ghci/prog-mhu006/prog-mhu006a.stdout
- + testsuite/tests/ghci/prog-mhu006/unitA
- + testsuite/tests/ghci/prog-mhu006/unitB
- testsuite/tests/ghci/prog003/prog003.script
- testsuite/tests/ghci/prog018/prog018.stdout
- testsuite/tests/ghci/prog020/Makefile
- testsuite/tests/ghci/prog020/all.T
- testsuite/tests/ghci/prog020/ghci.prog020.script → testsuite/tests/ghci/prog020/ghci.prog020a.script
- testsuite/tests/ghci/prog020/ghci.prog020.stderr → testsuite/tests/ghci/prog020/ghci.prog020a.stderr
- testsuite/tests/ghci/prog020/ghci.prog020.stdout → testsuite/tests/ghci/prog020/ghci.prog020a.stdout
- + testsuite/tests/ghci/prog020/ghci.prog020b.script
- + testsuite/tests/ghci/prog020/ghci.prog020b.stderr
- + testsuite/tests/ghci/prog020/ghci.prog020b.stdout
- + testsuite/tests/ghci/prog023/Makefile
- + testsuite/tests/ghci/prog023/all.T
- + testsuite/tests/ghci/prog023/prog023a.script
- + testsuite/tests/ghci/prog023/prog023a.stdout
- + testsuite/tests/ghci/prog023/prog023b.script
- + testsuite/tests/ghci/prog023/prog023b.stdout
- + testsuite/tests/ghci/prog023/src/A.hs
- + testsuite/tests/ghci/prog024/Makefile
- + testsuite/tests/ghci/prog024/all.T
- + testsuite/tests/ghci/prog024/prog024a.script
- + testsuite/tests/ghci/prog024/prog024a.stdout
- + testsuite/tests/ghci/prog024/prog024b.script
- + testsuite/tests/ghci/prog024/prog024b.stdout
- + testsuite/tests/ghci/prog024/prog024c.script
- + testsuite/tests/ghci/prog024/prog024c.stderr
- + testsuite/tests/ghci/prog024/prog024c.stdout
- + testsuite/tests/ghci/prog024/prog024d.script
- + testsuite/tests/ghci/prog024/prog024d.stderr
- + testsuite/tests/ghci/prog024/prog024d.stdout
- + testsuite/tests/ghci/prog024/prog024e.script
- + testsuite/tests/ghci/prog024/prog024e.stdout
- + testsuite/tests/ghci/prog024/prog024f.script
- + testsuite/tests/ghci/prog024/prog024f.stdout
- + testsuite/tests/ghci/prog024/src/A.hs
- + testsuite/tests/ghci/prog024/src/B.hs
- + testsuite/tests/ghci/prog025/Makefile
- + testsuite/tests/ghci/prog025/a/A.hs
- + testsuite/tests/ghci/prog025/all.T
- + testsuite/tests/ghci/prog025/prog025a.script
- + testsuite/tests/ghci/prog025/prog025a.stdout
- + testsuite/tests/ghci/prog025/prog025b.script
- + testsuite/tests/ghci/prog025/prog025b.stdout
- + testsuite/tests/ghci/prog025/testpkg/Test.hs
- + testsuite/tests/ghci/prog025/testpkg/testpkg-0.1.0.0.pkg
- + testsuite/tests/ghci/prog025/testpkg/testpkg-0.2.0.0.pkg
- + testsuite/tests/ghci/prog025/unitA
- testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout
- testsuite/tests/ghci/scripts/T13997.stdout
- testsuite/tests/ghci/scripts/T1914.stdout
- testsuite/tests/ghci/scripts/T20217.stdout
- testsuite/tests/ghci/scripts/T8042.stdout
- testsuite/tests/ghci/scripts/T8042recomp.stdout
- testsuite/tests/ghci/scripts/all.T
- testsuite/tests/ghci/should_run/T10920.stderr
- + testsuite/tests/interface-stability/.gitignore
- testsuite/tests/interface-stability/README.mkd
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- + testsuite/tests/interface-stability/download-base-exports.sh
- testsuite/tests/interface-stability/ghc-experimental-exports.stdout
- testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32
- testsuite/tests/interface-stability/ghc-prim-exports.stdout
- testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32
- testsuite/tests/javascript/closure/all.T
- testsuite/tests/linters/notes.stdout
- testsuite/tests/numeric/should_compile/T15547.stderr
- testsuite/tests/numeric/should_compile/T20347.stderr
- testsuite/tests/numeric/should_compile/T20374.stderr
- testsuite/tests/numeric/should_compile/T20376.stderr
- testsuite/tests/numeric/should_run/foundation.hs
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs
- testsuite/tests/parser/should_compile/T20452.stderr
- testsuite/tests/parser/should_compile/all.T
- + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs
- + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr
- testsuite/tests/parser/should_fail/all.T
- testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs
- testsuite/tests/perf/compiler/Makefile
- + testsuite/tests/perf/compiler/T26989.hs
- + testsuite/tests/perf/compiler/T26989a.hs
- testsuite/tests/perf/compiler/all.T
- testsuite/tests/perf/compiler/genMultiComp.py
- + testsuite/tests/perf/should_run/T11226.hs
- + testsuite/tests/perf/should_run/T11226.stdout
- testsuite/tests/perf/should_run/all.T
- testsuite/tests/printer/Makefile
- testsuite/tests/printer/PprModifiers.hs
- + testsuite/tests/printer/PprQualifiedStrings.hs
- testsuite/tests/printer/T18052a.stderr
- + testsuite/tests/printer/Test27291.hs
- testsuite/tests/printer/all.T
- testsuite/tests/profiling/should_run/callstack001.stdout
- + testsuite/tests/rts/T25275/DebugIpe.hs
- + testsuite/tests/rts/T25275/T25275_A.stdout
- + testsuite/tests/rts/T25275/T25275_B.stdout
- + testsuite/tests/rts/T25275/T25275_C.stdout
- + testsuite/tests/rts/T25275/T25275_D.stdout
- + testsuite/tests/rts/T25275/TraceIpe.hs
- + testsuite/tests/rts/T25275/all.T
- testsuite/tests/simplCore/should_compile/DsSpecPragmas.stderr
- testsuite/tests/simplCore/should_compile/RewriteHigherOrderPatterns.stderr
- testsuite/tests/simplCore/should_compile/T15205.stderr
- testsuite/tests/simplCore/should_compile/T18668.stderr
- testsuite/tests/simplCore/should_compile/T19246.stderr
- testsuite/tests/simplCore/should_compile/T19599.stderr
- testsuite/tests/simplCore/should_compile/T19599a.stderr
- testsuite/tests/simplCore/should_compile/T21917.stderr
- testsuite/tests/simplCore/should_compile/T23074.stderr
- testsuite/tests/simplCore/should_compile/T24359a.stderr
- testsuite/tests/simplCore/should_compile/T25160.stderr
- testsuite/tests/simplCore/should_compile/T25718c.stderr-ws-32
- testsuite/tests/simplCore/should_compile/T25718c.stderr-ws-64
- testsuite/tests/simplCore/should_compile/T26051.stderr
- testsuite/tests/simplCore/should_compile/T26116.stderr
- + testsuite/tests/simplCore/should_compile/T27261.hs
- + testsuite/tests/simplCore/should_compile/T27261_aux.hs
- testsuite/tests/simplCore/should_compile/T8331.stderr
- testsuite/tests/simplCore/should_compile/T8848a.stderr
- testsuite/tests/simplCore/should_compile/all.T
- testsuite/tests/simplCore/should_compile/spec004.stderr
- testsuite/tests/th/T24111.stdout
- testsuite/tests/typecheck/should_compile/T13032.stderr
- + testsuite/tests/typecheck/should_compile/T23135.hs
- testsuite/tests/typecheck/should_compile/all.T
- testsuite/tests/typecheck/should_compile/subsumption_sort_hole_fits.stderr
- testsuite/tests/typecheck/should_fail/T21130.stderr
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/ghc-pkg/Main.hs
- utils/ghc-toolchain/exe/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Program.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Target.hs
- utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
- utils/haddock/haddock-api/src/Haddock/Convert.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs
- utils/haddock/haddock-api/src/Haddock/Interface/RenameType.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs
- utils/jsffi/prelude.mjs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a4d4a417e8c176e3e980dff24a9bba…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a4d4a417e8c176e3e980dff24a9bba…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
Zubin pushed new branch wip/9.14.2-backports at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/9.14.2-backports
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/sjakobi/T25450-print-cpu] changelog.d: Restore code block using indentation syntax
by Simon Jakobi (＠sjakobi2) 29 May '26
by Simon Jakobi (＠sjakobi2) 29 May '26
29 May '26
Simon Jakobi pushed to branch wip/sjakobi/T25450-print-cpu at Glasgow Haskell Compiler / GHC
Commits:
60110d3f by Simon Jakobi at 2026-05-29T11:59:06+02:00
changelog.d: Restore code block using indentation syntax
The previous commit dropped the JSON example because a '{' in a
brace-delimited field value (description: { ... }) makes the Cabal
Distribution.Fields parser fail. Indentation-delimited field values
are not affected, so switch to that syntax and restore the example.
Verified against Cabal-3.16's readFields': the brace form rejects any
'{' or '}' anywhere in the content, while the indentation form parses
the same content cleanly.
Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com>
- - - - -
1 changed file:
- changelog.d/print-enabled-cpu-features
Changes:
=====================================
changelog.d/print-enabled-cpu-features
=====================================
@@ -3,12 +3,16 @@ synopsis: Add --print-enabled-cpu-features flag
issues: #25450
mrs: !16117
-description: {
+description:
GHC now supports a new mode flag ``--print-enabled-cpu-features``, which
prints a JSON object describing the CPU features currently enabled for code
generation, together with a minimal set of ``-m...`` flags that would
reproduce the non-default effective feature set for the current target.
- Dynamic options such as ``-mavx2`` and ``-mbmi2`` are respected.
+ Dynamic options such as ``-mavx2`` and ``-mbmi2`` are respected. ::
+
+ $ ghc -mavx2 --print-enabled-cpu-features
+ {"tag":"enabled-cpu-features","version":1,"target":"x86_64-linux-gnu",
+ "features":["SSE2","SSE3","SSSE3","SSE4.1","SSE4.2","AVX","AVX2"],
+ "as_m_flags":["-mavx2"]}
This is a first step toward implementing ``-march=native``.
-}
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/60110d3f185cae5147fabc4c879c761…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/60110d3f185cae5147fabc4c879c761…
You're receiving this email because of your account on gitlab.haskell.org.
1
0