Teo Camarasu pushed to branch wip/T25262 at Glasgow Haskell Compiler / GHC
Commits:
41bdb16f by Andreas Klebinger at 2025-10-06T18:04:34-04:00
Add a perf test for #26425
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1da0c700 by Andreas Klebinger at 2025-10-06T18:05:14-04:00
Testsuite: Silence warnings about Wx-partial in concprog001
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7471eb6a by sheaf at 2025-10-07T21:39:43-04:00
Improve how we detect user type errors in types
This commit cleans up all the code responsible for detecting whether a
type contains "TypeError msg" applications nested inside it. All the
logic is now in 'userTypeError_maybe', which is always deep. Whether
it looks inside type family applications is determined by the passed-in
boolean flag:
- When deciding whether a constraint is definitely insoluble, don't
look inside type family applications, as they may still reduce -- in
which case the TypeError could disappear.
- When reporting unsolved constraints, look inside type family
applications: they had the chance to reduce but didn't, and the
custom type error might contain valuable information.
All the details are explained in Note [Custom type errors in constraints]
in GHC.Tc.Types.Constraint.
Another benefit of this change is that it allows us to get rid of the
deeply dodgy 'getUserTypeErrorMsg' function.
This commit also improves the detection of custom type errors, for
example in equality constraints:
TypeError blah ~# rhs
It used to be the case that we didn't detect the TypeError on the LHS,
because we never considered that equality constraints could be insoluble
due to the presence of custom type errors. Addressing this oversight
improves detection of redundant pattern match warnings, fixing #26400.
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29955267 by Rodrigo Mesquita at 2025-10-07T21:40:25-04:00
cleanup: Drop obsolete settings from config.mk.in
These values used to be spliced into the bindist's `config.mk` s.t. when
`make` was run, the values were read and written into the bindist installation `settings` file.
However, we now carry these values to the bindist directly in the
default.target toolchain file, and `make` writes almost nothing to
`settings` now (see #26227)
The entries deleted in this MR were already unused.
Fixes #26478
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f7adfed2 by ARATA Mizuki at 2025-10-08T08:37:24-04:00
T22033 is only relevant if the word size is 64-bit
Fixes #25497
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ff1650c9 by Ben Gamari at 2025-10-08T08:38:07-04:00
rts/posix: Enforce iteration limit on heap reservation logic
Previously we could loop indefinitely when attempting to get an address
space reservation for our heap. Limit the logic to 8 iterations to
ensure we instead issue a reasonable error message.
Addresses #26151.
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01844557 by Ben Gamari at 2025-10-08T08:38:07-04:00
rts/posix: Hold on to low reservations when reserving heap
Previously when the OS gave us an address space reservation in low
memory we would immediately release it and try again. However, on some
platforms this meant that we would get the same allocation again in the
next iteration (since mmap's `hint` argument is just that, a hint).
Instead we now hold on to low reservations until we have found a
suitable heap reservation.
Fixes #26151.
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b2c8d052 by Sven Tennie at 2025-10-08T08:38:47-04:00
Build terminfo only in upper stages in cross-builds (#26288)
Currently, there's no way to provide library paths for [n]curses for
both - build and target - in cross-builds. As stage0 is only used to
build upper stages, it should be fine to build terminfo only for them.
This re-enables building cross-compilers with terminfo.
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c58f9a61 by Julian Ospald at 2025-10-08T08:39:36-04:00
ghc-toolchain: Drop `ld.gold` from merge object command
It's deprecated.
Also see #25716
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2b8baada by sheaf at 2025-10-08T18:23:37-04:00
Improvements to 'mayLookIdentical'
This commit makes significant improvements to the machinery that decides
when we should pretty-print the "invisible bits" of a type, such as:
- kind applications, e.g. '@k' in 'Proxy @k ty'
- RuntimeReps, e.g. 'TYPE r'
- multiplicities and linear arrows 'a %1 -> b'
To do this, this commit refactors 'mayLookIdentical' to return **which**
of the invisible bits don't match up, e.g. in
(a %1 -> b) ~ (a %Many -> b)
we find that the invisible bit that doesn't match up is a multiplicity,
so we should set 'sdocLinearTypes = True' when pretty-printing, and with
e.g.
Proxy @k1 ~ Proxy @k2
we find that the invisible bit that doesn't match up is an invisible
TyCon argument, so we set 'sdocPrintExplicitKinds = True'.
We leverage these changes to remove the ad-hoc treatment of linearity
of data constructors with 'dataConDisplayType' and 'dataConNonLinearType'.
This is now handled by the machinery of 'pprWithInvisibleBits'.
Fixes #26335 #26340
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129ce32d by sheaf at 2025-10-08T18:23:37-04:00
Store SDoc context in SourceError
This commits modifies the SourceError datatype which is used for
throwing and then reporting exceptions by storing all the info we need
to be able to print the SDoc, including whether we should print with
explicit kinds, explicit runtime-reps, etc.
This is done using the new datatype:
data SourceErrorContext
= SEC
!DiagOpts
!(DiagnosticOpts GhcMessage)
Now, when we come to report an error (by handling the exception), we
have access to the full context we need.
Fixes #26387
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f9790ca8 by Ben Gamari at 2025-10-08T18:24:19-04:00
gitlab-ci: Make RELEASE_JOB an input
Rather than an undocumented variable.
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14281a22 by Ben Gamari at 2025-10-11T14:06:47-04:00
rts/nonmoving: Fix comment spelling
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bedd38b0 by Ben Gamari at 2025-10-11T14:06:47-04:00
rts/nonmoving: Use atomic operations to update bd->flags
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215d6841 by Ben Gamari at 2025-10-11T14:06:47-04:00
nonmoving: Use get_itbl instead of explicit loads
This is cleaner and also fixes unnecessary (and unsound) use of
`volatile`.
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2c94aa3a by Ben Gamari at 2025-10-11T14:06:47-04:00
rts/Scav: Handle WHITEHOLEs in scavenge_one
`scavenge_one`, used to scavenge mutable list entries, may encounter
`WHITEHOLE`s when the non-moving GC is in use via two paths:
1. when an MVAR is being marked concurrently
2. when the object belongs to a chain of selectors being short-cutted.
Fixes #26204.
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6bd8155c by Matthew Pickering at 2025-10-11T14:07:29-04:00
Add support for generating bytecode objects
This commit adds the `-fwrite-byte-code` option which makes GHC emit a
`.gbc` file which contains a serialised representation of bytecode.
The bytecode can be loaded by the compiler to avoid having to
reinterpret a module when using the bytecode interpreter (for example,
in GHCi).
There are also the new options:
* -gbcdir=<DIR>: Specify the directory to place the gbc files
* -gbcsuf=<suffix>: Specify the suffix for gbc files
The option `-fbyte-code-and-object-code` now implies
`-fwrite-byte-code`.
These performance tests fail due to https://github.com/haskell/directory/issues/204
-------------------------
Metric Increase:
MultiComponentModules
MultiLayerModules
MultiComponentModulesRecomp
MultiLayerModulesRecomp
MultiLayerModulesTH_Make
MultiLayerModulesTH_OneShot
T13701
-------------------------
The bytecode serialisation part was implemented by Cheng Shao
Co-authored-by: Cheng Shao
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dc8f9599 by Matthew Pickering at 2025-10-11T14:07:30-04:00
Revert "Add a perf test for #26425"
This test has a large memory spike currently, which makes the test
sensitive, since if you allocate a little more or less, the precise
location where GC happens shifts and you observe a different part of the
spike.
Andreas told me to revert the patch for now, and he will add it back
when he fixes the memory spike.
This reverts commit 41bdb16fd083110a06507248f648c507a2feb4af.
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eb03ac67 by Teo Camarasu at 2025-10-14T23:05:09+01:00
Add submodules for template-haskell-lift and template-haskell-quasiquoter
These two new boot libraries expose stable subsets of the
template-haskell interface.
This is an implemenation of the GHC proposal https://github.com/ghc-proposals/ghc-proposals/pull/696
Work towards #25262
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164 changed files:
- .gitlab-ci.yml
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitmodules
- compiler/GHC.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/ByteCode/Breakpoints.hs
- + compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/Ppr.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Data/FlatBag.hs
- compiler/GHC/Data/SmallArray.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Backpack.hs
- + compiler/GHC/Driver/ByteCode.hs
- compiler/GHC/Driver/Config/Finder.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Driver/Messager.hs
- compiler/GHC/Driver/Monad.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/CtLoc.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Utils/Unify.hs-boot
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Types/SourceError.hs
- compiler/GHC/Types/SptEntry.hs
- compiler/GHC/Types/Tickish.hs
- compiler/GHC/Types/TyThing/Ppr.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Finder/Types.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/Location.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- compiler/GHC/Unit/Module/WholeCoreBindings.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Error.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/ghc.cabal.in
- docs/users_guide/phases.rst
- docs/users_guide/separate_compilation.rst
- ghc/GHCi/UI.hs
- hadrian/bindist/config.mk.in
- hadrian/src/Packages.hs
- hadrian/src/Settings/Default.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Lift.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs
- + libraries/template-haskell-lift
- + libraries/template-haskell-quasiquoter
- rts/include/rts/storage/Block.h
- rts/posix/OSMem.c
- rts/sm/NonMoving.c
- rts/sm/NonMovingMark.c
- rts/sm/Scav.c
- testsuite/tests/bytecode/T24634/T24634a.stdout
- testsuite/tests/bytecode/T24634/T24634b.stdout
- testsuite/tests/concurrent/prog001/all.T
- testsuite/tests/count-deps/CountDepsAst.stdout
- testsuite/tests/count-deps/CountDepsParser.stdout
- testsuite/tests/cpranal/should_compile/T18174.stderr
- testsuite/tests/driver/T11429c.stderr
- testsuite/tests/driver/T21682.stderr
- + testsuite/tests/driver/bytecode-object/A.hs
- + testsuite/tests/driver/bytecode-object/BytecodeForeign.c
- + testsuite/tests/driver/bytecode-object/BytecodeForeign.hs
- + testsuite/tests/driver/bytecode-object/BytecodeMain.hs
- + testsuite/tests/driver/bytecode-object/BytecodeTest.hs
- + testsuite/tests/driver/bytecode-object/Makefile
- + testsuite/tests/driver/bytecode-object/all.T
- + testsuite/tests/driver/bytecode-object/bytecode_object12.stderr
- + testsuite/tests/driver/bytecode-object/bytecode_object13.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object14.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object15.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object16.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object17.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object18.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object19.script
- + testsuite/tests/driver/bytecode-object/bytecode_object19.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object25.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object4.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object5.stdout
- + testsuite/tests/driver/bytecode-object/bytecode_object6.stdout
- testsuite/tests/driver/fat-iface/T22405/T22405.stdout
- testsuite/tests/driver/fat-iface/T22405/T22405b.stdout
- testsuite/tests/driver/fat-iface/fat011.stderr
- testsuite/tests/ghc-api/T10942.hs
- testsuite/tests/ghc-api/annotations-literals/literals.hs
- testsuite/tests/indexed-types/should_fail/T14887.stderr
- testsuite/tests/linear/should_fail/T19361.stderr
- testsuite/tests/llvm/should_run/all.T
- testsuite/tests/perf/compiler/Makefile
- + testsuite/tests/perf/compiler/MultiLayerModulesDefsGhciWithBytecodeFiles.script
- testsuite/tests/perf/compiler/all.T
- + testsuite/tests/pmcheck/should_compile/T26400.hs
- + testsuite/tests/pmcheck/should_compile/T26400.stderr
- + testsuite/tests/pmcheck/should_compile/T26400b.hs
- testsuite/tests/pmcheck/should_compile/all.T
- testsuite/tests/roles/should_compile/Roles13.stderr
- testsuite/tests/simplCore/should_compile/OpaqueNoCastWW.stderr
- testsuite/tests/simplCore/should_compile/T17673.stderr
- testsuite/tests/simplCore/should_compile/T18078.stderr
- testsuite/tests/simplCore/should_compile/T18995.stderr
- testsuite/tests/simplCore/should_compile/T19890.stderr
- testsuite/tests/simplCore/should_compile/T21948.stderr
- testsuite/tests/simplCore/should_compile/T21960.stderr
- testsuite/tests/simplCore/should_compile/T24808.stderr
- − testsuite/tests/simplCore/should_compile/T25713.stderr
- testsuite/tests/simplCore/should_compile/T4201.stdout
- testsuite/tests/simplCore/should_compile/T8331.stderr
- testsuite/tests/simplStg/should_compile/T22840.stderr
- testsuite/tests/typecheck/no_skolem_info/T20232.stderr
- testsuite/tests/typecheck/should_fail/T11672.stderr
- testsuite/tests/typecheck/should_fail/T12373.stderr
- testsuite/tests/typecheck/should_fail/T15807.stderr
- testsuite/tests/typecheck/should_fail/T16074.stderr
- testsuite/tests/typecheck/should_fail/T18357a.stderr
- testsuite/tests/typecheck/should_fail/T19627.stderr
- testsuite/tests/typecheck/should_fail/T20241b.stderr
- testsuite/tests/typecheck/should_fail/T21530a.stderr
- testsuite/tests/typecheck/should_fail/UnliftedNewtypesFamilyKindFail2.stderr
- testsuite/tests/typecheck/should_fail/VisFlag1.stderr
- utils/check-exact/Parsers.hs
- utils/check-exact/Preprocess.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/MergeObjs.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e587e58be46dd5fc68bee8c975f5b4e...
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