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[Git][ghc/ghc][wip/fix-26953] Decoupling 'L.H.S' from 'GHC.Types.SourceText'
by recursion-ninja (＠recursion-ninja) 26 Jun '26

26 Jun '26

recursion-ninja pushed to branch wip/fix-26953 at Glasgow Haskell Compiler / GHC Commits: d1ac8b13 by Recursion Ninja at 2026-06-26T11:31:05-04:00 Decoupling 'L.H.S' from 'GHC.Types.SourceText' * Migrated 'IntegralLit' to 'L.H.S.Lit'. * Migrated 'FractionalLit' to 'L.H.S.Lit'. * Migrated 'StringLiteral' to 'L.H.S.Lit'. * Added TTG extension points to the types above. * Added nice export list to 'GHC.Hs.Lit'. * Added 'rnOverLitVal' and 'tcOverLitVal' functions to 'GHC.Hs.Lit'. * Added instance 'Anno (StringLiteral (GhcPass p)) = SrcSpanAnnN' * Moved [Notes] about 'SourceText' from 'L.H.S.*' to 'GHC.*'. * Removed all references to 'SourceText' from 'L.H.S'. * Removed the trailing comma record field from 'StringLiteral' * Renamed exported functions for nomenclature consistency. * Deprecated the renamed functions Fixes #26953 - - - - - 54 changed files: - compiler/GHC/Builtin/Utils.hs - compiler/GHC/Hs/Binds.hs - compiler/GHC/Hs/Decls.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Pmc/Desugar.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Warnings.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Rename/Bind.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/HsType.hs - compiler/GHC/Rename/Lit.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/PkgQual.hs - compiler/GHC/Types/SourceText.hs - compiler/GHC/Unit/Module/Warnings.hs - compiler/Language/Haskell/Syntax/Binds.hs - compiler/Language/Haskell/Syntax/Binds/InlinePragma.hs - compiler/Language/Haskell/Syntax/Decls.hs - compiler/Language/Haskell/Syntax/Decls/Foreign.hs - compiler/Language/Haskell/Syntax/Expr.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/Language/Haskell/Syntax/Lit.hs - libraries/process - testsuite/tests/ghc-api/annotations-literals/literals.stdout - testsuite/tests/ghc-api/annotations-literals/parsed.hs - utils/check-exact/ExactPrint.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.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/Interface/Rename.hs - utils/haddock/haddock-api/src/Haddock/Types.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d1ac8b13956697e975c207fbcb10d50… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d1ac8b13956697e975c207fbcb10d50… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/fix-26953] 11 commits: Add -dstable-core-dump-order for stable Core dump ordering (#27296)
by recursion-ninja (＠recursion-ninja) 26 Jun '26

26 Jun '26

recursion-ninja pushed to branch wip/fix-26953 at Glasgow Haskell Compiler / GHC Commits: 2f6a5534 by Simon Jakobi at 2026-06-23T15:46:20+02:00 Add -dstable-core-dump-order for stable Core dump ordering (#27296) The order of top-level bindings in Core dumps (-ddump-simpl etc.) is the compiler's Unique-sensitive internal processing order, so an unrelated upstream change can reorder them and defeat a textual diff of two dumps. This adds an opt-in flag -dstable-core-dump-order that reorders the top-level bindings of dumps routed through dumpPassResult into a stable, Unique-independent order, so two dumps line up across rebuilds. See Note [Stable Core dump order] in GHC.Core.Ppr for the sort key and its rationale. Adds tests T27296 (binders GHC emits in non-source order by default, asserted to come out stably ordered under the flag) and T27296b (an untidied -ddump-float-out dump pinning the ordering of the anonymous lvl floats by literal value). Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com> - - - - - 141986e3 by mangoiv at 2026-06-24T15:51:14-04:00 compiler: refactor error reporting code for ExplicitLevelImports Refactors error reporting code for ExplicitLevelImports to pass in a RdrName and a GlobalReaderElt to be able to report errors that are faithful to the source and to more precisely distinguish between names that are in scope from different qualifications. Fixes #27385 and #26616 - - - - - aa7df6b6 by Simon Hengel at 2026-06-24T15:52:18-04:00 Set GHC_VERSION when calling custom pre-processors (see #25952) (so that pre-processors can emit backwards compatible code) - - - - - a9e494f2 by Simon Hengel at 2026-06-24T15:54:08-04:00 Add a flag to control GHCi specific error hints (close #27409) - - - - - a805b2a2 by Simon Hengel at 2026-06-24T15:55:20-04:00 Reference correct package in error messages for reexported modules (fixes #27417) - - - - - f235d183 by Simon Jakobi at 2026-06-25T05:51:18-04:00 Add explicit setBit/clearBit/complementBit for instance Bits Integer (#21176) The default setBit, clearBit, and complementBit methods allocate intermediate Integers per call. Define them explicitly via the new integerSetBit[#], integerClearBit[#] and integerComplementBit[#], built on the BigNat# primitives, which avoid those allocations. Allocation is not eliminated entirely -- the negative (IN) cases would need in-place mutation, which is left as future work. The default methods constant-folded on literal arguments via the integerOr/integerAnd/integerXor rules, which fold literal Integers of any size. The explicit functions have no such rule, so they (their Word-argument wrappers, and the Bits Integer methods) are marked INLINE to expose the underlying primops to the simplifier; see Note [INLINE for constant folding of bit operations]. This restores folding only on the small-int (IS) path -- large literal Integers (IP/IN) are no longer constant-folded, a minor regression for that case. T8832 covers the IS-path folding. The new golden-output test T21176 checks all three operations against the default implementations across the sign/size boundaries, recording each result plus its integerCheck validity. The base and ghc-bignum interface- stability export goldens gain the new functions. The main changelog entry lives in changelog.d under a new ghc-internal section (renamed from ghc-prim). CLC proposal: https://github.com/haskell/core-libraries-committee/issues/423 Co-Authored-By: Claude Opus 4.7 <noreply(a)anthropic.com> - - - - - 202ed264 by Marc Scholten at 2026-06-25T05:52:21-04:00 haddock: use Text in documentation pipeline This patch moves Haddock's documentation pipeline from String to Text where the data is already textual. It avoids repeated conversions while keeping the existing decoding behavior for invalid UTF-8 docstring chunks. The main changes are: * Render and carry docstrings as Text in Haddock-facing paths. * Use the Binary Text instance from GHC.Utils.Binary for Haddock interface files, and bump the Haddock binary interface version. * Add a FastString HTML instance so XHTML rendering avoids intermediate String allocation. * Keep HsDocStringChunk decoding lenient, matching the previous unpackHDSC behavior on invalid UTF-8 input. * Update the xhtml submodule to 3000.4.1.0, which contains the apostrophe escaping fix used by the Haddock test output. Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot(a)users.noreply.github.com> Co-authored-by: Claude Opus 4.5 <noreply(a)anthropic.com> Assisted-by: Codex <codex(a)openai.com> - - - - - a72ff58f by mangoiv at 2026-06-25T05:53:07-04:00 compiler: rename ZonkAny to UnusedType and add pretty printing logic ZonkAny is a hard to understand name for users who do not know how the compiler works internally. Additionally, it is confusing that ZonkAny, while being a concrete type *represents* a meta variable, espeically in the compiler output. This patch changes the name of ZonkAny to UnusedType which is closer to its intended semantics and adds special pretty printing logic to display this type in the same fashion the compiler displays meta variables in other places, whenever they leak from the implementation to the user. It also exports the type from ghc-internal:GHC.Internal.Types in order to expose documentation. Fixes #27390 Co-Authored-By: Sam Derbyshire <sam.derbyshire(a)gmail.com> - - - - - 6813f002 by Simon Jakobi at 2026-06-26T04:51:47-04:00 Reg.Linear: drop Platform argument from most FR (FreeRegs) methods The FR class has one instance per CPU architecture, so any architecture-constant information its methods derived from the Platform argument can instead be baked into the instance. This removes the now needless Platform argument from frAllocateReg, frGetFreeRegs and frReleaseReg. frInitFreeRegs keeps its Platform argument: the initial allocatable set is genuinely platform-dependent, see Note [Aarch64 Register x18 at Darwin and Windows]. Fixes #26665 Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com> - - - - - 3b2a9409 by Zubin Duggal at 2026-06-26T04:52:39-04:00 testsuite: Report fragile failures as skipped in JUnit output - - - - - 3aa8952a by Recursion Ninja at 2026-06-26T11:24:34-04:00 Decoupling 'L.H.S' from 'GHC.Types.SourceText' * Migrated 'IntegralLit' to 'L.H.S.Lit'. * Migrated 'FractionalLit' to 'L.H.S.Lit'. * Migrated 'StringLiteral' to 'L.H.S.Lit'. * Added TTG extension points to the types above. * Added nice export list to 'GHC.Hs.Lit'. * Added 'rnOverLitVal' and 'tcOverLitVal' functions to 'GHC.Hs.Lit'. * Added instance 'Anno (StringLiteral (GhcPass p)) = SrcSpanAnnN' * Moved [Notes] about 'SourceText' from 'L.H.S.*' to 'GHC.*'. * Removed all references to 'SourceText' from 'L.H.S'. * Removed the trailing comma record field from 'StringLiteral' * Renamed exported functions for nomenclature consistency. * Deprecated the renamed functions Fixes #26953 - - - - - 227 changed files: - + changelog.d/26616 - + changelog.d/T21176 - changelog.d/config - + changelog.d/interactive-error-hints - + changelog.d/pp-set-ghc-version - + changelog.d/reexported-module-errors - + changelog.d/stable-core-dump-order-27296 - + changelog.d/unused-type - compiler/GHC/Builtin/Names.hs - compiler/GHC/Builtin/Types.hs - compiler/GHC/Builtin/Utils.hs - compiler/GHC/CmmToAsm/BlockLayout.hs - compiler/GHC/CmmToAsm/Reg/Linear.hs - compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs - compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs - compiler/GHC/CmmToAsm/Reg/Linear/X86.hs - compiler/GHC/CmmToAsm/Reg/Linear/X86_64.hs - compiler/GHC/CmmToAsm/X86/RegInfo.hs - compiler/GHC/CmmToAsm/X86/Regs.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Ppr.hs - compiler/GHC/Driver/Backpack.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Driver/Session/Units.hs - compiler/GHC/Hs/Binds.hs - compiler/GHC/Hs/Decls.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Pmc/Desugar.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Usage.hs - compiler/GHC/Iface/Errors.hs - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Iface/Errors/Types.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Type.hs - compiler/GHC/Iface/Warnings.hs - compiler/GHC/Linker/Unit.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Rename/Bind.hs - compiler/GHC/Rename/Env.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/HsType.hs - compiler/GHC/Rename/Lit.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Rename/Splice.hs - compiler/GHC/Rename/Splice.hs-boot - compiler/GHC/Rename/Unbound.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/SysTools/Tasks.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Export.hs - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Types.hs - compiler/GHC/Tc/Utils/Env.hs - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/Tc/Utils/TcType.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/Hint/Ppr.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/PkgQual.hs - compiler/GHC/Types/SourceText.hs - compiler/GHC/Unit/Finder.hs - compiler/GHC/Unit/Finder/Types.hs - compiler/GHC/Unit/Info.hs - compiler/GHC/Unit/Module/Warnings.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Utils/Misc.hs - compiler/GHC/Utils/Outputable.hs - compiler/Language/Haskell/Syntax/Binds.hs - compiler/Language/Haskell/Syntax/Binds/InlinePragma.hs - compiler/Language/Haskell/Syntax/Decls.hs - compiler/Language/Haskell/Syntax/Decls/Foreign.hs - compiler/Language/Haskell/Syntax/Expr.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/Language/Haskell/Syntax/Lit.hs - docs/users_guide/debugging.rst - docs/users_guide/ghci.rst - docs/users_guide/phases.rst - ghc/GHCi/UI/Exception.hs - ghc/Main.hs - libraries/base/changelog.md - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/ghc-bignum/changelog.md - libraries/ghc-experimental/src/GHC/PrimOps.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Types.hs - libraries/process - libraries/xhtml - testsuite/driver/junit.py - testsuite/tests/annotations/should_fail/annfail03.stderr - testsuite/tests/annotations/should_fail/annfail04.stderr - testsuite/tests/annotations/should_fail/annfail06.stderr - testsuite/tests/annotations/should_fail/annfail09.stderr - testsuite/tests/ghc-api/annotations-literals/literals.stdout - testsuite/tests/ghc-api/annotations-literals/parsed.hs - testsuite/tests/ghci/prog-mhu002/prog-mhu002c.stdout - testsuite/tests/ghci/scripts/ghci024.stdout - testsuite/tests/ghci/scripts/ghci024.stdout-mingw32 - testsuite/tests/interface-stability/ghc-bignum-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - + testsuite/tests/numeric/should_run/T21176.hs - + testsuite/tests/numeric/should_run/T21176.stdout - + testsuite/tests/numeric/should_run/T21176.stdout-ws-32 - testsuite/tests/numeric/should_run/all.T - + testsuite/tests/package/ImportReexport.hs - + testsuite/tests/package/ImportReexport.stderr - testsuite/tests/package/all.T - testsuite/tests/perf/compiler/T11068.stdout - testsuite/tests/pmcheck/should_compile/T12957.stderr - testsuite/tests/profiling/should_run/staticcallstack002.stdout - testsuite/tests/quasiquotation/qq001/qq001.stderr - testsuite/tests/quasiquotation/qq002/qq002.stderr - testsuite/tests/quasiquotation/qq003/qq003.stderr - testsuite/tests/quasiquotation/qq004/qq004.stderr - testsuite/tests/quotes/LiftErrMsg.stderr - testsuite/tests/quotes/LiftErrMsgDefer.stderr - testsuite/tests/quotes/LiftErrMsgTyped.stderr - testsuite/tests/quotes/T10384.stderr - testsuite/tests/quotes/T5721.stderr - testsuite/tests/quotes/TH_localname.stderr - testsuite/tests/simplCore/should_compile/Makefile - testsuite/tests/simplCore/should_compile/T13156.stdout - testsuite/tests/simplCore/should_compile/T26615.stderr - + testsuite/tests/simplCore/should_compile/T27296.hs - + testsuite/tests/simplCore/should_compile/T27296.stdout - + testsuite/tests/simplCore/should_compile/T27296b.hs - + testsuite/tests/simplCore/should_compile/T27296b.stdout - testsuite/tests/simplCore/should_compile/T8832.hs - testsuite/tests/simplCore/should_compile/T8832.stdout - testsuite/tests/simplCore/should_compile/all.T - testsuite/tests/splice-imports/SI03.stderr - testsuite/tests/splice-imports/SI05.stderr - testsuite/tests/splice-imports/SI08.stderr - testsuite/tests/splice-imports/SI08_oneshot.stderr - testsuite/tests/splice-imports/SI16.stderr - testsuite/tests/splice-imports/SI18.stderr - testsuite/tests/splice-imports/SI20.stderr - testsuite/tests/splice-imports/SI25.stderr - testsuite/tests/splice-imports/SI28.stderr - testsuite/tests/splice-imports/SI29.stderr - testsuite/tests/splice-imports/SI31.stderr - testsuite/tests/splice-imports/SI36.stderr - testsuite/tests/splice-imports/T26088.stderr - testsuite/tests/splice-imports/T26090.stderr - + testsuite/tests/splice-imports/T26616.hs - + testsuite/tests/splice-imports/T26616.stderr - testsuite/tests/splice-imports/all.T - testsuite/tests/th/T16976z.stderr - testsuite/tests/th/T17820a.stderr - testsuite/tests/th/T17820b.stderr - testsuite/tests/th/T17820c.stderr - testsuite/tests/th/T17820d.stderr - testsuite/tests/th/T17820e.stderr - testsuite/tests/th/T21547.stderr - testsuite/tests/th/T23829_hasty.stderr - testsuite/tests/th/T23829_hasty_b.stderr - testsuite/tests/th/T23829_tardy.ghc.stderr - testsuite/tests/th/T26098_local.stderr - testsuite/tests/th/T26098_quote.stderr - testsuite/tests/th/T26098_splice.stderr - testsuite/tests/th/T26099.stderr - testsuite/tests/th/T26568.stderr - testsuite/tests/th/T5795.stderr - testsuite/tests/typecheck/should_fail/T13292.stderr - + testsuite/tests/typecheck/should_fail/T27390-explicit-kinds.stderr - + testsuite/tests/typecheck/should_fail/T27390.hs - + testsuite/tests/typecheck/should_fail/T27390.stderr - + testsuite/tests/typecheck/should_fail/T27390a.hs - testsuite/tests/typecheck/should_fail/all.T - utils/check-exact/ExactPrint.hs - utils/haddock/haddock-api/src/Haddock.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hoogle.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs - utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Meta.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Names.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs - utils/haddock/haddock-api/src/Haddock/Doc.hs - utils/haddock/haddock-api/src/Haddock/GhcUtils.hs - utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs - utils/haddock/haddock-api/src/Haddock/Interface/Create.hs - utils/haddock/haddock-api/src/Haddock/Interface/Json.hs - utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs - utils/haddock/haddock-api/src/Haddock/Interface/ParseModuleHeader.hs - utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs - utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs - utils/haddock/haddock-api/src/Haddock/Options.hs - utils/haddock/haddock-api/src/Haddock/Parser.hs - utils/haddock/haddock-api/src/Haddock/Types.hs - utils/haddock/haddock-api/src/Haddock/Utils/Json.hs - utils/haddock/haddock-api/src/Haddock/Utils/Json/Parser.hs - utils/haddock/haddock-api/src/Haddock/Utils/Json/Types.hs - utils/haddock/haddock-library/src/Documentation/Haddock/Doc.hs - utils/haddock/haddock-library/src/Documentation/Haddock/Markup.hs - utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs - utils/haddock/haddock-library/src/Documentation/Haddock/Parser/Util.hs - utils/haddock/haddock-library/src/Documentation/Haddock/Types.hs - utils/haddock/haddock-library/test/Documentation/Haddock/ParserSpec.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/9464e48154fd8c34c1ae704723fc0c… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/9464e48154fd8c34c1ae704723fc0c… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/fix-unreg
by Cheng Shao (＠TerrorJack) 26 Jun '26

26 Jun '26

Cheng Shao pushed new branch wip/fix-unreg at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/fix-unreg You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/fix-26971] Decoupling 'L.H.S' from 'GHC.Hs.Doc'
by recursion-ninja (＠recursion-ninja) 26 Jun '26

26 Jun '26

recursion-ninja pushed to branch wip/fix-26971 at Glasgow Haskell Compiler / GHC Commits: e3db1261 by Recursion Ninja at 2026-06-26T11:02:41-04:00 Decoupling 'L.H.S' from 'GHC.Hs.Doc' * Migrated 'GHC.Hs.Doc' and 'GHC.Hs.DocString' AST defintions from 'GHC.*' namespace, to new 'Language.Haskell.Syntax.Doc' module in the 'L.H.S' "namespace." * Updated 'HsDocString to be TTG-parameterised as 'HsDocString pass'. * Added 'GHC.Hs.Extension.Pass': splits 'GhcPass'/'Pass' and all 'HsDocString' TTG instances out of 'GHC.Hs.Extension', which re-exports it unchanged (this is backwards compatible and prevents the introduction of a boot file). * Deleted 'GHC.Hs.Doc.hs-boot'; removed all 'L.H.S.*' imports of 'GHC.Hs.Doc'. * Updated 'GHC.Hs.DocString' to be TTG pass-parameterised throughout; moved 'mkHsDocStringChunk'/'unpackHDSC' here (require 'GHC.Utils.Encoding'). * Split 'GHC.Rename.Doc.rnHsDoc' from 'rnHsDocIdentifiersOnly'. * Updated parser, renamer, typechecker, HIE, and exact-print for new types. * Added 'HsDocString' TTG instances for 'DocNameI' to 'Haddock.Types'. Resolves #26971 - - - - - 35 changed files: - compiler/GHC/Builtin/Utils.hs - compiler/GHC/Hs.hs - compiler/GHC/Hs/Doc.hs - − compiler/GHC/Hs/Doc.hs-boot - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Extension.hs - + compiler/GHC/Hs/Extension/Pass.hs - compiler/GHC/Hs/ImpExp.hs - compiler/GHC/HsToCore/Docs.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Parser/Annotation.hs - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/PostProcess/Haddock.hs - compiler/GHC/Rename/Doc.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Tc/Errors/Hole.hs - compiler/GHC/Tc/Errors/Hole/FitTypes.hs - compiler/GHC/Tc/Gen/Splice.hs - compiler/GHC/Tc/Module.hs - compiler/Language/Haskell/Syntax.hs - compiler/Language/Haskell/Syntax/Decls.hs - + compiler/Language/Haskell/Syntax/Doc.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/Language/Haskell/Syntax/ImpExp.hs - compiler/Language/Haskell/Syntax/Type.hs - compiler/ghc.cabal.in - libraries/process - utils/check-exact/ExactPrint.hs - utils/check-exact/Utils.hs - utils/haddock/haddock-api/src/Haddock/Interface/Create.hs - utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs - utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs - utils/haddock/haddock-api/src/Haddock/Types.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e3db12611073a444a79e7c91047654d… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e3db12611073a444a79e7c91047654d… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/jana/explain-with-dict
by VeryMilkyJoe (＠VeryMilkyJoe) 26 Jun '26

26 Jun '26

VeryMilkyJoe pushed new branch wip/jana/explain-with-dict at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/jana/explain-with-dict You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/torsten.schmits/mwb-26-01/mp-backports] Expose compileWholeCoreBindings
by Torsten Schmits (＠torsten.schmits) 26 Jun '26

26 Jun '26

Torsten Schmits pushed to branch wip/torsten.schmits/mwb-26-01/mp-backports at Glasgow Haskell Compiler / GHC Commits: bf93569f by Ian-Woo Kim at 2026-06-26T15:54:29+02:00 Expose compileWholeCoreBindings - - - - - 1 changed file: - compiler/GHC/Driver/Main.hs Changes: ===================================== compiler/GHC/Driver/Main.hs ===================================== @@ -48,6 +48,7 @@ module GHC.Driver.Main , Messager, batchMsg, batchMultiMsg , HscBackendAction (..), HscRecompStatus (..) , initModDetails + , compileWholeCoreBindings , initWholeCoreBindings , loadIfaceByteCode , hscMaybeWriteIface View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/bf93569fa8141594fd311754d29f2c4… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/bf93569fa8141594fd311754d29f2c4… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/torsten.schmits/mwb-26-01/fixed] Expose compileWholeCoreBindings
by Torsten Schmits (＠torsten.schmits) 26 Jun '26

26 Jun '26

Torsten Schmits pushed to branch wip/torsten.schmits/mwb-26-01/fixed at Glasgow Haskell Compiler / GHC Commits: 5f161598 by Ian-Woo Kim at 2026-06-26T15:54:16+02:00 Expose compileWholeCoreBindings - - - - - 1 changed file: - compiler/GHC/Driver/Main.hs Changes: ===================================== compiler/GHC/Driver/Main.hs ===================================== @@ -48,6 +48,7 @@ module GHC.Driver.Main , Messager, batchMsg, batchMultiMsg , HscBackendAction (..), HscRecompStatus (..) , initModDetails + , compileWholeCoreBindings , initWholeCoreBindings , loadIfaceByteCode , loadIfaceByteCodeLazy View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/5f161598778815aa7bfdc48ce2490ed… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/5f161598778815aa7bfdc48ce2490ed… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T27437] 5 commits: NCG: thread the liveness fixpoint flag in an unboxed tuple
by Simon Jakobi (＠sjakobi2) 26 Jun '26

26 Jun '26

Simon Jakobi pushed to branch wip/sjakobi/T27437 at Glasgow Haskell Compiler / GHC Commits: 063edbdb by Simon Jakobi at 2026-06-25T15:11:22+02:00 NCG: thread the liveness fixpoint flag in an unboxed tuple Replace the hand-written convergence loop with a local 'mapAccumL'' that threads the block map and the 'changed' flag together in a single unboxed-tuple accumulator, (# Bool, BlockMap Regs #). This keeps the loop allocation-free: nothing is boxed per block, matching the previous hand-written code while expressing it as a mapAccumL'-style traversal. The combinator must be local and monomorphic in its accumulator: a reusable mapAccumL' would have to thread the two values through one boxed accumulator (a strict pair still costs a heap cell per iteration), and a representation-polymorphic accumulator that could be an unboxed tuple is rejected by GHC's representation-polymorphism restriction. See the new Note [Liveness fixpoint convergence test]. Benchmark asm is byte-identical and allocation is unchanged from the previous commit (~112 MB less than master on an ~8300-block procedure). Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com> - - - - - 049f9635 by Simon Jakobi at 2026-06-26T14:01:44+02:00 Revert "NCG: thread the liveness fixpoint flag in an unboxed tuple" This reverts commit 063edbdbfc2b7396024504167801844833ddee4c. - - - - - f0b7971f by Simon Jakobi at 2026-06-26T14:08:52+02:00 NCG: rename fixpoint to iterateUntilUnchanged, add type signature Give the local fixpoint loop a descriptive name and an explicit type signature (scoping instr via forall on livenessSCCs). Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com> - - - - - 912617de by Simon Jakobi at 2026-06-26T14:12:13+02:00 Wibbles - - - - - d8a819e7 by Simon Jakobi at 2026-06-26T14:23:17+02:00 NCG: fuse the liveness fixpoint change-detection lookup into the insert The per-SCC liveness fixpoint previously did three map traversals per block each iteration: livenessBlock's mapInsert, plus two mapLookups in linearLiveness to compare a block's entry before and after the pass -- one of which merely re-fetched the value just inserted. Have livenessBlock do a single mapInsertLookup (a new Label.hs wrapper over Word64Map.insertLookupWithKey) that inserts the new entry and returns the old one in one traversal, and report whether the entry changed. linearLiveness just OR's these per-block flags and no longer touches the map. Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com> - - - - - 2 changed files: - compiler/GHC/Cmm/Dataflow/Label.hs - compiler/GHC/CmmToAsm/Reg/Liveness.hs Changes: ===================================== compiler/GHC/Cmm/Dataflow/Label.hs ===================================== @@ -35,6 +35,7 @@ module GHC.Cmm.Dataflow.Label , mapEmpty , mapSingleton , mapInsert + , mapInsertLookup , mapInsertWith , mapDelete , mapAlter @@ -199,6 +200,13 @@ mapSingleton (Label k) v = LM (M.singleton k v) mapInsert :: Label -> v -> LabelMap v -> LabelMap v mapInsert (Label k) v (LM m) = LM (M.insert k v m) +-- | Insert a value, also returning the value previously bound to the key (if +-- any). Fuses the insert and lookup into a single traversal of the map. +mapInsertLookup :: Label -> v -> LabelMap v -> (Maybe v, LabelMap v) +mapInsertLookup (Label k) v (LM m) = + case M.insertLookupWithKey (\_ new _ -> new) k v m of + (old, m') -> (old, LM m') + mapInsertWith :: (v -> v -> v) -> Label -> v -> LabelMap v -> LabelMap v mapInsertWith f (Label k) v (LM m) = LM (M.insertWith f k v m) ===================================== compiler/GHC/CmmToAsm/Reg/Liveness.hs ===================================== @@ -879,7 +879,7 @@ computeLiveness platform sccs , ppr sccs']) livenessSCCs - :: Instruction instr + :: forall instr. Instruction instr => Platform -> BlockMap Regs -> [SCC (LiveBasicBlock instr)] -- accum @@ -891,23 +891,27 @@ livenessSCCs _ blockmap done [] = (done, blockmap) livenessSCCs platform blockmap done (AcyclicSCC block : sccs) - = let (blockmap', block') = livenessBlock platform blockmap block + = let (_, blockmap', block') = livenessBlock platform blockmap block in livenessSCCs platform blockmap' (AcyclicSCC block' : done) sccs livenessSCCs platform blockmap done (CyclicSCC blocks : sccs) = livenessSCCs platform blockmap' (CyclicSCC blocks':done) sccs - where (blockmap', blocks') = fixpoint blockmap + where (blockmap', blocks') = iterateUntilUnchanged blockmap -- Iterate the liveness pass over the SCC until the block map reaches -- a fixed point. Only the SCC's own blocks can change between -- iterations (livenessBlock only inserts the block it processes, and -- earlier SCCs are already finalised). - fixpoint bm - | changed = fixpoint bm' + iterateUntilUnchanged :: BlockMap Regs -> (BlockMap Regs, [LiveBasicBlock instr]) + iterateUntilUnchanged bm + | changed = iterateUntilUnchanged bm' | otherwise = (bm', blocks'') where (changed, bm', blocks'') = linearLiveness bm blocks + -- Like @mapAccumL (livenessBlock platform)@, but also OR's together + -- the per-block changed flags reported by livenessBlock, so the + -- caller can detect the fixed point without comparing block maps. linearLiveness :: Instruction instr => BlockMap Regs -> [LiveBasicBlock instr] @@ -917,16 +921,13 @@ livenessSCCs platform blockmap done go !changed bm [] = (changed, bm, []) go !changed bm (block : blks') = case livenessBlock platform bm block of - (bm', block') -> - let bid = blockId block - !changed' = changed - || mapLookup bid bm /= mapLookup bid bm' + (blockChanged, bm', block') -> + let !changed' = changed || blockChanged in case go changed' bm' blks' of (changed'', bm'', blks'') -> (changed'', bm'', block' : blks'') - -- | Annotate a basic block with register liveness information. -- livenessBlock @@ -934,19 +935,23 @@ livenessBlock => Platform -> BlockMap Regs -> LiveBasicBlock instr - -> (BlockMap Regs, LiveBasicBlock instr) + -> (Bool, BlockMap Regs, LiveBasicBlock instr) livenessBlock platform blockmap (BasicBlock block_id instrs) = let (regsLiveOnEntry, instrs1) = livenessBack platform noRegs blockmap [] (reverse instrs) - blockmap' = mapInsert block_id regsLiveOnEntry blockmap + -- Fuse the insert with the lookup of the old entry, so the fixpoint + -- loop in livenessSCCs can tell whether this block changed for free, + -- without a separate map traversal. + (oldEntry, blockmap') = mapInsertLookup block_id regsLiveOnEntry blockmap + changed = oldEntry /= Just regsLiveOnEntry instrs2 = livenessForward platform regsLiveOnEntry instrs1 output = BasicBlock block_id instrs2 - in ( blockmap', output) + in (changed, blockmap', output) -- | Calculate liveness going forwards, -- filling in when regs are born View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/5b2720e7add17812c3194f9e6d149a… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/5b2720e7add17812c3194f9e6d149a… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 4 commits: Reg.Linear: drop Platform argument from most FR (FreeRegs) methods
by Marge Bot (＠marge-bot) 26 Jun '26

26 Jun '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 6813f002 by Simon Jakobi at 2026-06-26T04:51:47-04:00 Reg.Linear: drop Platform argument from most FR (FreeRegs) methods The FR class has one instance per CPU architecture, so any architecture-constant information its methods derived from the Platform argument can instead be baked into the instance. This removes the now needless Platform argument from frAllocateReg, frGetFreeRegs and frReleaseReg. frInitFreeRegs keeps its Platform argument: the initial allocatable set is genuinely platform-dependent, see Note [Aarch64 Register x18 at Darwin and Windows]. Fixes #26665 Co-Authored-By: Claude Opus 4.8 <noreply(a)anthropic.com> - - - - - 3b2a9409 by Zubin Duggal at 2026-06-26T04:52:39-04:00 testsuite: Report fragile failures as skipped in JUnit output - - - - - ffb880ae by Simon Hengel at 2026-06-26T07:40:42-04:00 Rename `MCDiagnostic` to `InternalMCDiagnostic` `MCDiagnostic` is meant to be used for compiler diagnostics. Any code that creates `MCDiagnostic` directly, without going through `GHC.Driver.Errors.printMessage`, sidesteps `-fdiagnostics-as-json` (see e.g. !14616, !14475, !14492 !14548). To avoid this in the future, this change more narrowly controls who creates `MCDiagnostic` (see #24113). - - - - - 120dc0de by Simon Hengel at 2026-06-26T07:40:43-04:00 Remove deprecated flag `-ddump-json` (see #24113) This was first deprecated in 9.10.1. - - - - - 35 changed files: - + changelog.d/remove-ddump-json-flag - compiler/GHC/CmmToAsm/Reg/Linear.hs - compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs - compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs - compiler/GHC/CmmToAsm/Reg/Linear/X86.hs - compiler/GHC/CmmToAsm/Reg/Linear/X86_64.hs - compiler/GHC/CmmToAsm/X86/RegInfo.hs - compiler/GHC/CmmToAsm/X86/Regs.hs - compiler/GHC/Driver/Errors.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main/Passes.hs - compiler/GHC/Driver/Pipeline.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Types/Error.hs - − compiler/GHC/Types/Error.hs-boot - compiler/GHC/Types/SourceError.hs - compiler/GHC/Utils/Error.hs - compiler/GHC/Utils/Logger.hs - docs/users_guide/debugging.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Exception.hs - testsuite/driver/junit.py - testsuite/tests/driver/T16167.stderr - − testsuite/tests/driver/T16167.stdout - testsuite/tests/driver/all.T - testsuite/tests/driver/json2.stderr - − testsuite/tests/driver/json_dump.hs - − testsuite/tests/driver/json_dump.stderr - utils/check-exact/Main.hs - utils/check-exact/Preprocess.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/802a3c758d0ca72bdb556aaaca46a2… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/802a3c758d0ca72bdb556aaaca46a2… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] testsuite: Report fragile failures as skipped in JUnit output
by Marge Bot (＠marge-bot) 26 Jun '26

26 Jun '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 3b2a9409 by Zubin Duggal at 2026-06-26T04:52:39-04:00 testsuite: Report fragile failures as skipped in JUnit output - - - - - 1 changed file: - testsuite/driver/junit.py Changes: ===================================== testsuite/driver/junit.py ===================================== @@ -14,12 +14,13 @@ def junit(t: TestRun) -> ET.ElementTree: + len(t.unexpected_stat_failures) + len(t.unexpected_passes)), errors = str(len(t.framework_failures)), + skipped = str(len(t.fragile_failures)), timestamp = datetime.now().isoformat()) - for res_type, group in [('stat failure', t.unexpected_stat_failures), - ('unexpected failure', t.unexpected_failures), - ('unexpected pass', t.unexpected_passes), - ('fragile failure', t.fragile_failures)]: + for kind, res_type, group in [('failure', 'stat failure', t.unexpected_stat_failures), + ('failure', 'unexpected failure', t.unexpected_failures), + ('failure', 'unexpected pass', t.unexpected_passes), + ('skipped', 'fragile failure', t.fragile_failures)]: for tr in group: testcase = ET.SubElement(testsuite, 'testcase', classname = tr.way, @@ -30,7 +31,7 @@ def junit(t: TestRun) -> ET.ElementTree: if tr.stderr: message += ['', 'stderr:', '==========', tr.stderr] - result = ET.SubElement(testcase, 'failure', + result = ET.SubElement(testcase, kind, type = res_type, message = tr.reason) result.text = '\n'.join(message) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3b2a9409bae73ca3e503cd6986331b0… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3b2a9409bae73ca3e503cd6986331b0… You're receiving this email because of your account on gitlab.haskell.org.

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