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[Git][ghc/ghc][wip/spj-reinstallable-base2] Major patch to re-engineer known-key names
by Rodrigo Mesquita (＠alt-romes) 12 Jul '26

12 Jul '26

Rodrigo Mesquita pushed to branch wip/spj-reinstallable-base2 at Glasgow Haskell Compiler / GHC Commits: e6a26719 by Simon Peyton Jones at 2026-07-11T19:05:25+01:00 Major patch to re-engineer known-key names This big patch implements the New Plan for known-key names, described in #27013. Read the big Note [Overview of known-key names] in GHC.Types.Name Some things had to be reworked slightly to accomodate the new known-keys design. A significant one was the generation of auxiliary KindRep bindings, which was greatly simplified. Note [Grand plan for Typeable] was updated accordingly. Another example: GHC.Internal.CString was merged into GHC.Internal.Types. Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com> The couple hundreds of hours spent here by Rodrigo were sponsored by Well-Typed Metrics: compile_time/bytes allocated ------------------------------------- Baseline Test Metric value New value Change ------------------------------------------------------------------------------------------ MultiComponentModules100(normal) ghc/alloc 24,312,779,672 24,990,470,432 +2.8% BAD MultiComponentModulesRecomp(normal) ghc/alloc 601,924,960 621,884,888 +3.3% BAD MultiComponentModulesRecomp100(normal) ghc/alloc 11,884,065,432 12,531,373,704 +5.4% BAD MultiLayerModules(normal) ghc/alloc 3,861,537,072 3,706,919,512 -4.0% GOOD T13701(normal) ghc/alloc 3,517,246,392 3,237,179,616 -8.0% GOOD T13820(normal) ghc/alloc 28,961,056 29,663,208 +2.4% BAD T14697(normal) ghc/alloc 472,044,184 443,550,048 -6.0% GOOD T18140(normal) ghc/alloc 47,905,664 49,115,808 +2.5% BAD T4801(normal) ghc/alloc 269,339,096 263,432,040 -2.2% GOOD T783(normal) ghc/alloc 341,112,672 333,339,952 -2.3% GOOD hard_hole_fits(normal) ghc/alloc 222,164,728 213,433,808 -3.9% GOOD mhu-perf(normal) ghc/alloc 49,011,440 46,706,280 -4.7% GOOD geo. mean +0.1% minimum -8.0% maximum +5.4% All performance regressions were investigated in depth. The surviving ones: - MultiComponentModules100, MultiComponentModulesRecomp100, MultiComponentModulesRecomp regresses because existing bugs that make an additional implicit edge do too much redundant work: #27053 and #27461 - T13820, T18140, T10547 regress because we load an additional interface and associated Names for GHC.Essentials. ------------------------- Metric Decrease: MultiLayerModules T13701 T14697 T4801 T783 hard_hole_fits mhu-perf size_hello_obj Metric Increase: LinkableUsage01 MultiComponentModules100 MultiComponentModulesRecomp MultiComponentModulesRecomp100 T10547 T13820 T18140 T20049 ------------------------- - - - - - 728 changed files: - + changelog.d/refactor-known-names - compiler/GHC.hs - + compiler/GHC/Builtin.hs - + compiler/GHC/Builtin/KnownKeys.hs - + compiler/GHC/Builtin/KnownOccs.hs - + compiler/GHC/Builtin/Modules.hs - − compiler/GHC/Builtin/Names.hs - − compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/PrimOps/Casts.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - + compiler/GHC/Builtin/TH.hs - compiler/GHC/Builtin/Uniques.hs - compiler/GHC/Builtin/Uniques.hs-boot - − compiler/GHC/Builtin/Utils.hs - + compiler/GHC/Builtin/WiredIn/Ids.hs - compiler/GHC/Builtin/Types/Prim.hs → compiler/GHC/Builtin/WiredIn/Prim.hs - compiler/GHC/Builtin/Types/Literals.hs → compiler/GHC/Builtin/WiredIn/TypeLits.hs - compiler/GHC/Builtin/Types.hs → compiler/GHC/Builtin/WiredIn/Types.hs - compiler/GHC/Builtin/Types.hs-boot → compiler/GHC/Builtin/WiredIn/Types.hs-boot - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/DataCon.hs - compiler/GHC/Core/FVs.hs - compiler/GHC/Core/FamInstEnv.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Multiplicity.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Core/Opt/CprAnal.hs - compiler/GHC/Core/Opt/DmdAnal.hs - compiler/GHC/Core/Opt/LiberateCase.hs - compiler/GHC/Core/Opt/OccurAnal.hs - 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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e6a2671949a8644e5682f16143757ff… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e6a2671949a8644e5682f16143757ff… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][wip/spj-reinstallable-base2] Major patch to re-engineer known-key names
by Rodrigo Mesquita (＠alt-romes) 11 Jul '26

11 Jul '26

Rodrigo Mesquita pushed to branch wip/spj-reinstallable-base2 at Glasgow Haskell Compiler / GHC Commits: c2a3a5c3 by Simon Peyton Jones at 2026-07-11T16:20:02+01:00 Major patch to re-engineer known-key names This big patch implements the New Plan for known-key names, described in #27013. Read the big Note [Overview of known-key names] in GHC.Types.Name Some things had to be reworked slightly to accomodate the new known-keys design. A significant one was the generation of auxiliary KindRep bindings, which was greatly simplified. Note [Grand plan for Typeable] was updated accordingly. Another example: GHC.Internal.CString was merged into GHC.Internal.Types. Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com> The couple hundreds of hours spent here by Rodrigo were sponsored by Well-Typed Metrics: compile_time/bytes allocated ------------------------------------- Baseline Test Metric value New value Change ------------------------------------------------------------------------------------------ MultiComponentModules100(normal) ghc/alloc 24,312,779,672 24,990,470,432 +2.8% BAD MultiComponentModulesRecomp(normal) ghc/alloc 601,924,960 621,884,888 +3.3% BAD MultiComponentModulesRecomp100(normal) ghc/alloc 11,884,065,432 12,531,373,704 +5.4% BAD MultiLayerModules(normal) ghc/alloc 3,861,537,072 3,706,919,512 -4.0% GOOD T13701(normal) ghc/alloc 3,517,246,392 3,237,179,616 -8.0% GOOD T13820(normal) ghc/alloc 28,961,056 29,663,208 +2.4% BAD T14697(normal) ghc/alloc 472,044,184 443,550,048 -6.0% GOOD T18140(normal) ghc/alloc 47,905,664 49,115,808 +2.5% BAD T4801(normal) ghc/alloc 269,339,096 263,432,040 -2.2% GOOD T783(normal) ghc/alloc 341,112,672 333,339,952 -2.3% GOOD hard_hole_fits(normal) ghc/alloc 222,164,728 213,433,808 -3.9% GOOD mhu-perf(normal) ghc/alloc 49,011,440 46,706,280 -4.7% GOOD geo. mean +0.1% minimum -8.0% maximum +5.4% All performance regressions were investigated in depth. The surviving ones: - MultiComponentModules100, MultiComponentModulesRecomp100, MultiComponentModulesRecomp regresses because existing bugs that make an additional implicit edge do too much redundant work: #27053 and #27461 - T13820, T18140, T10547 regress because we load an additional interface and associated Names for GHC.Essentials. ------------------------- Metric Decrease: MultiLayerModules T13701 T14697 T4801 T783 hard_hole_fits mhu-perf size_hello_obj Metric Increase: LinkableUsage01 MultiComponentModules100 MultiComponentModulesRecomp MultiComponentModulesRecomp100 T10547 T13820 T18140 T20049 ------------------------- - - - - - 728 changed files: - + changelog.d/refactor-known-names - compiler/GHC.hs - + compiler/GHC/Builtin.hs - + compiler/GHC/Builtin/KnownKeys.hs - + compiler/GHC/Builtin/KnownOccs.hs - + compiler/GHC/Builtin/Modules.hs - − compiler/GHC/Builtin/Names.hs - − compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/PrimOps/Casts.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - + compiler/GHC/Builtin/TH.hs - compiler/GHC/Builtin/Uniques.hs - compiler/GHC/Builtin/Uniques.hs-boot - − compiler/GHC/Builtin/Utils.hs - + compiler/GHC/Builtin/WiredIn/Ids.hs - compiler/GHC/Builtin/Types/Prim.hs → compiler/GHC/Builtin/WiredIn/Prim.hs - compiler/GHC/Builtin/Types/Literals.hs → compiler/GHC/Builtin/WiredIn/TypeLits.hs - compiler/GHC/Builtin/Types.hs → compiler/GHC/Builtin/WiredIn/Types.hs - compiler/GHC/Builtin/Types.hs-boot → compiler/GHC/Builtin/WiredIn/Types.hs-boot - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/DataCon.hs - compiler/GHC/Core/FVs.hs - compiler/GHC/Core/FamInstEnv.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Multiplicity.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Core/Opt/CprAnal.hs - compiler/GHC/Core/Opt/DmdAnal.hs - compiler/GHC/Core/Opt/LiberateCase.hs - compiler/GHC/Core/Opt/OccurAnal.hs - 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compiler/GHC/HsToCore/Types.hs - compiler/GHC/HsToCore/Utils.hs - compiler/GHC/Iface/Binary.hs - compiler/GHC/Iface/Env.hs - − compiler/GHC/Iface/Env.hs-boot - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Iface/Errors/Types.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Iface/Make.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Tidy.hs - compiler/GHC/Iface/Type.hs - compiler/GHC/IfaceToCore.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Annotation.hs - compiler/GHC/Parser/Errors/Ppr.hs - compiler/GHC/Parser/Header.hs - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Plugins.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/Unbound.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Context.hs - compiler/GHC/Runtime/Debugger.hs - 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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c2a3a5c3c4b28f27713fc2cd30b36f0… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c2a3a5c3c4b28f27713fc2cd30b36f0… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-reinstallable-base2] 19 commits: Add 'backendInfoTableMapValidity' backend predicate
by Rodrigo Mesquita (＠alt-romes) 11 Jul '26

11 Jul '26

Rodrigo Mesquita pushed to branch wip/spj-reinstallable-base2 at Glasgow Haskell Compiler / GHC Commits: 66d1a5d5 by fendor at 2026-07-07T16:57:56-04:00 Add 'backendInfoTableMapValidity' backend predicate Check whether the backend supports the `-finfo-table-map` flag and ignore it otherwise. Improve by-design documentation of `backendCodeOutput`. `Backend` is **abstract by design**. Make this clearer in `backendCodeOutput` which is incorrectly being used as a proxy for `Backend`. Instead, define the desired property predicates in GHC.Driver.Backend In the process, make `backendCodeOutput` total. - - - - - 74f1071d by fendor at 2026-07-07T16:57:56-04:00 Add failing test for `-finfo-table-map` and bytecode backend If you compile a module using the bytecode backend, with -finfo-table-map, then the info table map doesn't get populated for the module. This is because the -finfo-table-map code path is implemented mostly in the StgToCmm phase which isn't run when creating bytecode. Ticket #27039 - - - - - 28d63bca by mangoiv at 2026-07-07T16:59:16-04:00 ci: don't fail nightly if there have been no changes that night Fixes #27127 - - - - - 4ebfc478 by Rodrigo Mesquita at 2026-07-08T04:47:53-04:00 ttg: Using ShortText over FastString in the AST To make the AST independent of GHC, this commit replaces usages of `FastString` with `HText` in the AST, killing the last edge from Language.Haskell.* to GHC.* modules. Even though we /do/ want to use FastStrings in general -- critically in Names or Ids -- there is no particular reason for the FastStrings that occur in the AST proper to be FastStrings. Strings in the AST are typically unique and don't benefit particularly from being interned FastStrings with Uniques for fast comparison. `HText` is a type synonym for `ShortText` which uses GHC's Modified UTF-8 encoding exclusively. Modified UTF-8 must be used to represent the Haskell AST because the Haskell Report allows surrogate code points. `Data.Text.Text` functions use Standard UTF-8 which replace surrogates with a placeholder value, thus `Data.Text.Text` is unsuitable for AST strings. See the `Language.Haskell.Syntax.Text` module header for more details. Final progress towards #21592 Closes #21628 - - - - - d910b353 by Simon Peyton Jones at 2026-07-08T04:48:36-04:00 Update equality-type documenation in GHC.Builtin.Types.Prim Fix #27466 - - - - - b2530542 by Simon Peyton Jones at 2026-07-08T04:48:36-04:00 Honour -dsuppress-coercions in GHC.Core.TyCo.pprCo Fixes #27467 - - - - - 9a73179a by Facundo Domínguez at 2026-07-08T04:49:26-04:00 Add item to MR checklist asking to squash fixup commits after approval The checklist has an item that reads All commits are either individually buildable or squashed. This item could be checked immediately after sending the merge request though. If reviewers ask for amends later on, and the author amends the merge request, there was no item that would remind the contributors to squash the fixup commits before landing. This commit adds a new item After all approvals and before landing: all fixup commits are squashed with their originating commits. which should be harder to mark as done before approvals have been given. - - - - - ed09895d by Andreas Klebinger at 2026-07-08T16:53:27-04:00 Fix a profiling race condition resulting in segfaults. StgToCmm: Don't assume tagged FUN closures in closureCodeBody. When entering a closure the self/node pointer might not be tagged in some situations when a thunk is evaluated by multiple threads. So we most AND away the tag bits rather than subtracting an expected tag. Apply.cmm: Fix a race condition occuring when a thunk is mutated during GC. In stg_ap_0_fast when might need to run GC before entering a thunk. If this happens another thread or the GC itself might mutate the closure making entering it no longer valid. We now check for this. Add test and changelog for #27123 fixes. - - - - - 67c03eb2 by Cheng Shao at 2026-07-08T16:54:09-04:00 ghc-heap: fix invalid srtlen returned by peekItbl when no-TNTC This patch fixes the no-TNTC code path of `peekItbl` so that it looks at the right memory address when reading the `srt` field from the `StgInfoTable_` struct. Also adds a `T27465` regression test that reproduces the bug on no-TNTC builds before the fix. Fixes #27465. Co-authored-by: Codex <codex(a)openai.com> - - - - - 2ecabb4f by Zubin Duggal at 2026-07-09T09:23:25-04:00 hadrian: binary-dist-dir should not be the default target Revert behaviour to pre 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2 In 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2, we applied the following behaviour change: ``` hadrian: Build stage 2 cross compilers ... * 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 ``` This is a major regression to development experience, a plain hadrian/build --freeze1 now takes ages because we rebuild all docs (which need to go in the binary dist dir). `binary-dist-dir` is the wrong default target for regular GHC development work Fixes #27445 - - - - - e16388e3 by Zubin Duggal at 2026-07-09T09:23:25-04:00 .gitignore: Add the hadrian system.config introduced by commit 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2 Since commit 23c9b6c392f52ec9d7a8618b204ff6b885f5fba2 Author: Matthew Pickering <matthewtpickering(a)gmail.com> Date: Thu Dec 21 16:17:41 2023 +0000 hadrian: Build stage 2 cross compilers ./configure produces /hadrian/cfg/system.config.{host,target} Add these to .gitignore - - - - - 7e8abf41 by Alan Zimmerman at 2026-07-09T09:24:12-04:00 EPA: Replace AnnListItem with simply [TrailingAnn] Remove the unnecessary wrapper around a single field. - - - - - 29032f17 by Zubin Duggal at 2026-07-09T09:24:58-04:00 testsuite: Keep real reason for fragile test failures - - - - - c34e03a7 by Zubin Duggal at 2026-07-09T09:24:58-04:00 testsuite: Fall back to the failure reason for empty JUnit bodies - - - - - 409d40f0 by Zubin Duggal at 2026-07-09T09:24:58-04:00 testsuite: Show output diffs in JUnit output Also refactor compare_outputs to return essentially a `Maybe Diff` (`CompareOutput`) instead of a bool, but more pythonic. This allows us to pass the diff through nice. - - - - - 06fee1ab by Zubin Duggal at 2026-07-09T09:24:58-04:00 perf notes: include stat deviation and acceptance window in notes so they show up in gitlab - - - - - 57c0f32c by mangoiv at 2026-07-10T11:08:38-04:00 driver: enable -finter-module-far-jumps by default this fixes a compatibility bug with certain binutils/gcc versions where we were seeing jump offset overflow errors. This commit can probably reverted if we stop supporting the problematic binutils/gcc verions (2.44 and 14.2, respectively) Reolves #26994 - - - - - 4396a6f2 by Andrea Vezzosi at 2026-07-10T11:09:25-04:00 [Fix #27287] preserve ModBreaks in ModIface - - - - - eaf53f85 by Simon Peyton Jones at 2026-07-11T16:12:19+01:00 Major patch to re-engineer known-key names This big patch implements the New Plan for known-key names, described in #27013. Read the big Note [Overview of known-key names] in GHC.Types.Name Some things had to be reworked slightly to accomodate the new known-keys design. A significant one was the generation of auxiliary KindRep bindings, which was greatly simplified. Note [Grand plan for Typeable] was updated accordingly. Another example: GHC.Internal.CString was merged into GHC.Internal.Types. Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com> The couple hundreds of hours spent here by Rodrigo were sponsored by Well-Typed Metrics: compile_time/bytes allocated ------------------------------------- Baseline Test Metric value New value Change ------------------------------------------------------------------------------------------ MultiComponentModules100(normal) ghc/alloc 24,312,779,672 24,990,470,432 +2.8% BAD MultiComponentModulesRecomp(normal) ghc/alloc 601,924,960 621,884,888 +3.3% BAD MultiComponentModulesRecomp100(normal) ghc/alloc 11,884,065,432 12,531,373,704 +5.4% BAD MultiLayerModules(normal) ghc/alloc 3,861,537,072 3,706,919,512 -4.0% GOOD T13701(normal) ghc/alloc 3,517,246,392 3,237,179,616 -8.0% GOOD T13820(normal) ghc/alloc 28,961,056 29,663,208 +2.4% BAD T14697(normal) ghc/alloc 472,044,184 443,550,048 -6.0% GOOD T18140(normal) ghc/alloc 47,905,664 49,115,808 +2.5% BAD T4801(normal) ghc/alloc 269,339,096 263,432,040 -2.2% GOOD T783(normal) ghc/alloc 341,112,672 333,339,952 -2.3% GOOD hard_hole_fits(normal) ghc/alloc 222,164,728 213,433,808 -3.9% GOOD mhu-perf(normal) ghc/alloc 49,011,440 46,706,280 -4.7% GOOD geo. mean +0.1% minimum -8.0% maximum +5.4% All performance regressions were investigated in depth. The surviving ones: - MultiComponentModules100, MultiComponentModulesRecomp100, MultiComponentModulesRecomp regresses because existing bugs that make an additional implicit edge do too much redundant work: #27053 and #27461 - T13820, T18140, T10547 regress because we load an additional interface and associated Names for GHC.Essentials. ------------------------- Metric Decrease: MultiLayerModules T13701 T14697 T4801 T783 hard_hole_fits mhu-perf size_hello_obj Metric Increase: LinkableUsage01 MultiComponentModules100 MultiComponentModulesRecomp MultiComponentModulesRecomp100 T10547 T13820 T18140 T20049 ------------------------- - - - - - 838 changed files: - .gitignore - .gitlab-ci.yml - .gitlab/merge_request_templates/Default.md - .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py - + changelog.d/T21628 - + changelog.d/T27123.md - + changelog.d/fix-peekitbl-no-tntc - + changelog.d/inter-module-far-jumps-aarch64-default - + changelog.d/refactor-known-names - compiler/GHC.hs - + compiler/GHC/Builtin.hs - + compiler/GHC/Builtin/KnownKeys.hs - + compiler/GHC/Builtin/KnownOccs.hs - + compiler/GHC/Builtin/Modules.hs - − compiler/GHC/Builtin/Names.hs - − compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/PrimOps/Casts.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - + compiler/GHC/Builtin/TH.hs - compiler/GHC/Builtin/Uniques.hs - compiler/GHC/Builtin/Uniques.hs-boot - − compiler/GHC/Builtin/Utils.hs - + compiler/GHC/Builtin/WiredIn/Ids.hs - compiler/GHC/Builtin/Types/Prim.hs → compiler/GHC/Builtin/WiredIn/Prim.hs - compiler/GHC/Builtin/Types/Literals.hs → compiler/GHC/Builtin/WiredIn/TypeLits.hs - compiler/GHC/Builtin/Types.hs → compiler/GHC/Builtin/WiredIn/Types.hs - compiler/GHC/Builtin/Types.hs-boot → compiler/GHC/Builtin/WiredIn/Types.hs-boot - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/ByteCode/Breakpoints.hs - compiler/GHC/ByteCode/Types.hs - compiler/GHC/Cmm/CLabel.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/DataCon.hs - 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compiler/GHC/HsToCore.hs - compiler/GHC/HsToCore/Arrows.hs - compiler/GHC/HsToCore/Binds.hs - compiler/GHC/HsToCore/Breakpoints.hs - + compiler/GHC/HsToCore/Breakpoints/Types.hs - compiler/GHC/HsToCore/Errors/Types.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Foreign/C.hs - compiler/GHC/HsToCore/Foreign/Call.hs - compiler/GHC/HsToCore/Foreign/JavaScript.hs - compiler/GHC/HsToCore/Foreign/Utils.hs - compiler/GHC/HsToCore/Foreign/Wasm.hs - compiler/GHC/HsToCore/ListComp.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/HsToCore/Pmc/Check.hs - compiler/GHC/HsToCore/Pmc/Desugar.hs - compiler/GHC/HsToCore/Pmc/Ppr.hs - compiler/GHC/HsToCore/Pmc/Solver.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Types.hs - compiler/GHC/HsToCore/Utils.hs - compiler/GHC/Iface/Binary.hs - compiler/GHC/Iface/Env.hs - − compiler/GHC/Iface/Env.hs-boot - compiler/GHC/Iface/Errors/Ppr.hs - 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testsuite/tests/typecheck/should_compile/holes2.stderr - testsuite/tests/typecheck/should_compile/holes3.stderr - testsuite/tests/typecheck/should_compile/subsumption_sort_hole_fits.stderr - testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr - testsuite/tests/typecheck/should_fail/T12921.stderr - testsuite/tests/typecheck/should_fail/T14884.stderr - testsuite/tests/typecheck/should_fail/T15883b.stderr - testsuite/tests/typecheck/should_fail/T15883c.stderr - testsuite/tests/typecheck/should_fail/T15883d.stderr - testsuite/tests/typecheck/should_fail/T21130.stderr - testsuite/tests/typecheck/should_fail/T3323.stderr - testsuite/tests/typecheck/should_fail/T5095.stderr - testsuite/tests/typecheck/should_fail/T7279.stderr - testsuite/tests/typecheck/should_fail/TcStaticPointersFail02.stderr - testsuite/tests/typecheck/should_fail/TyAppPat_PatternBindingExistential.stderr - testsuite/tests/typecheck/should_fail/tcfail072.stderr - testsuite/tests/typecheck/should_fail/tcfail097.stderr - testsuite/tests/typecheck/should_fail/tcfail133.stderr - testsuite/tests/typecheck/should_run/T22510.stdout - testsuite/tests/unboxedsums/unboxedsums_unit_tests.hs - testsuite/tests/warnings/should_compile/DerivingTypeable.stderr - utils/check-exact/ExactPrint.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.hs - utils/check-exact/check-exact.cabal - utils/genprimopcode/Main.hs - utils/haddock/haddock-api/haddock-api.cabal - 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/Convert.hs - utils/haddock/haddock-api/src/Haddock/GhcUtils.hs - utils/haddock/haddock-api/src/Haddock/Interface.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/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/-/compare/7a5b9bbcc8182bb291a42810748791… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/7a5b9bbcc8182bb291a42810748791… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/az/exactprint-annotation-rationalisation] 2 commits: EPA: remove unused addTrailingAnnToL. Squash appropriately
by Alan Zimmerman (＠alanz) 11 Jul '26

11 Jul '26

Alan Zimmerman pushed to branch wip/az/exactprint-annotation-rationalisation at Glasgow Haskell Compiler / GHC Commits: 37aed349 by Alan Zimmerman at 2026-07-11T10:49:13+01:00 EPA: remove unused addTrailingAnnToL. Squash appropriately - - - - - a0cea896 by Alan Zimmerman at 2026-07-11T14:27:16+01:00 EPS: Remove NoEpTok/NoEpUniTok, using an unhelpful SrcSpan instead Also introduce helper functions noEpTok and noEpUniTok to serve as simple replacements in code inserting an token annotation without location information. - - - - - 34 changed files: - compiler/GHC/Hs.hs - compiler/GHC/Hs/Dump.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Annotation.hs - compiler/GHC/Parser/PostProcess.hs - testsuite/tests/ghc-api/exactprint/T22919.stderr - testsuite/tests/ghc-api/exactprint/Test20239.stderr - testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr - testsuite/tests/haddock/should_compile_flag_haddock/T17544.stderr - testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr - testsuite/tests/haddock/should_compile_flag_haddock/T24221.stderr - testsuite/tests/module/mod185.stderr - testsuite/tests/parser/should_compile/DumpParsedAst.stderr - testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr - testsuite/tests/parser/should_compile/DumpRenamedAst.stderr - testsuite/tests/parser/should_compile/DumpSemis.stderr - testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr - testsuite/tests/parser/should_compile/KindSigs.stderr - testsuite/tests/parser/should_compile/T14189.stderr - testsuite/tests/parser/should_compile/T15323.stderr - testsuite/tests/parser/should_compile/T20452.stderr - testsuite/tests/parser/should_compile/T20718.stderr - testsuite/tests/parser/should_compile/T20718b.stderr - testsuite/tests/parser/should_compile/T20846.stderr - testsuite/tests/parser/should_compile/T23315/T23315.stderr - testsuite/tests/printer/AnnotationNoListTuplePuns.stdout - testsuite/tests/printer/T18791.stderr - testsuite/tests/printer/Test20297.stdout - testsuite/tests/printer/Test24533.stdout - utils/check-exact/ExactPrint.hs - utils/check-exact/Parsers.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.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/-/compare/894f1a6298ad2cf26d106770103e95… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/894f1a6298ad2cf26d106770103e95… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/udfm-placement] 4 commits: UDFM: match TaggedVal eagerly instead of projecting with taggedFst
by Simon Jakobi (＠sjakobi2) 11 Jul '26

11 Jul '26

Simon Jakobi pushed to branch wip/sjakobi/udfm-placement at Glasgow Haskell Compiler / GHC Commits: b3c9a5c7 by Simon Jakobi at 2026-07-11T09:19:48+02:00 UDFM: match TaggedVal eagerly instead of projecting with taggedFst The TaggedHole commit rewrote several call sites from eager pattern matches to taggedFst/taggedSnd projections to keep patterns exhaustive. Where the projection is passed to an unknown, possibly-lazy function (nonDetStrictFoldUDFM, filterUDFM, filterUDFM_Directly, alterUDFM, alterUDFM_L, upsertUDFM), GHC must let-bind (taggedFst tv) as a thunk rather than forcing tv up front, costing an allocation per element or per call. Release-flavour CI showed this as T24471 ghc/alloc +3%. Restore explicit pattern matches at those sites, with an explicit TaggedHole -> panic alternative. The tf helpers in addToUDFM_Directly and addToUDFM_C_Directly keep the accessor style: their projections feed strict TaggedVal fields, so no thunk survives. Assisted-by: Claude Fable 5 - - - - - 5413343a by Simon Jakobi at 2026-07-11T13:52:13+02:00 Revert the TaggedHole placement-sort commits This reverts b3c9a5c7c5 ("UDFM: match TaggedVal eagerly instead of projecting with taggedFst") and a70e4b4285 ("UDFM: represent placement-sort holes with a TaggedHole constructor"), restoring the static unsafeCoerce () sentinel from 26f30aa1f2. The extra constructor leaked the sentinel into every consumer of TaggedVal: each match had to cover an impossible case or go through partial accessors, and the accessor style regressed T24471 ghc/alloc by 3% (release CI) via per-element thunks at lazy call sites. The unsafeCoerce sentinel keeps the hole local to placementSort. Assisted-by: Claude Fable 5 - - - - - 633b5543 by Simon Jakobi at 2026-07-11T13:53:16+02:00 UDFM: tighten the placement-sort sentinel documentation Restructure the hole paragraphs of Note [Sorting a UDFM]: separate the two conditions the unsafeCoerce safety argument rests on, note that the sentinel never escapes placementSort, and list the alternative hole representations with why each costs more. Assisted-by: Claude Fable 5 - - - - - 2e96e50f by Simon Jakobi at 2026-07-11T14:01:35+02:00 Accept perf metric decreases from the UDFM placement sort Deterministic UDFM iteration no longer allocates the mergesort's cons cells (#27459). All four perf-testing CI platforms report the same set of decreases, the largest being InstanceMatching1 at -69%. Assisted-by: Claude Fable 5 ------------------------- Metric Decrease: InstanceMatching InstanceMatching1 ManyAlternatives T13719 ------------------------- - - - - - 1 changed file: - compiler/GHC/Types/Unique/DFM.hs Changes: ===================================== compiler/GHC/Types/Unique/DFM.hs ===================================== @@ -74,7 +74,6 @@ import GHC.Prelude import GHC.Types.Unique ( Uniquable(..), Unique, getKey, mkUniqueGrimily ) import GHC.Utils.Outputable -import GHC.Utils.Panic (panic) import qualified GHC.Data.Word64Map.Strict as MS import qualified GHC.Data.Word64Map as M @@ -136,24 +135,19 @@ import qualified GHC.Data.Word64Set as W -- | A type of values carrying an insertion tag data TaggedVal val = - TaggedVal - !val - {-# UNPACK #-} !Int -- ^ insertion tag - | TaggedHole -- ^ placement-sort gap sentinel; never stored in a map. - -- See Note [Sorting a UDFM]. + TaggedVal + !val + {-# UNPACK #-} !Int -- ^ insertion tag deriving stock (Data, Functor, Foldable, Traversable) taggedFst :: TaggedVal val -> val taggedFst (TaggedVal v _) = v -taggedFst TaggedHole = panic "taggedFst: TaggedHole" taggedSnd :: TaggedVal val -> Int taggedSnd (TaggedVal _ i) = i -taggedSnd TaggedHole = panic "taggedSnd: TaggedHole" instance Eq val => Eq (TaggedVal val) where (TaggedVal v1 _) == (TaggedVal v2 _) = v1 == v2 - _ == _ = panic "TaggedVal (==): TaggedHole" -- | Type of unique deterministic finite maps -- @@ -213,7 +207,7 @@ addToUDFM_Directly :: UniqDFM key elt -> Unique -> elt -> UniqDFM key elt addToUDFM_Directly (UDFM m i) u v = UDFM (MS.insertWith tf (getKey u) (TaggedVal v i) m) (i + 1) where - tf new old = TaggedVal (taggedFst new) (taggedSnd old) + tf (TaggedVal new_v _) (TaggedVal _ old_i) = TaggedVal new_v old_i -- Keep the old tag, but insert the new value -- This means that udfmToList typically returns elements -- in the order of insertion, rather than the reverse @@ -230,8 +224,8 @@ addToUDFM_C_Directly addToUDFM_C_Directly f (UDFM m i) u v = UDFM (MS.insertWith tf (getKey u) (TaggedVal v i) m) (i + 1) where - tf new old - = TaggedVal (f (taggedFst old) (taggedFst new)) (taggedSnd old) + tf (TaggedVal new_v _) (TaggedVal old_v old_i) + = TaggedVal (f old_v new_v) old_i -- Flip the arguments, because M.insertWith uses (new->old->result) -- but f needs (old->new->result) -- Like addToUDFM_Directly, keep the old tag @@ -384,7 +378,7 @@ foldWithKeyUDFM k z m = foldr (uncurry k) z (udfmToList m) nonDetStrictFoldUDFM :: (elt -> a -> a) -> a -> UniqDFM key elt -> a nonDetStrictFoldUDFM k z (UDFM m _i) = foldl' k' z m where - k' acc tv = k (taggedFst tv) acc + k' acc (TaggedVal v _) = k v acc {- Note [Cost of deterministic iteration] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -446,13 +440,38 @@ folding the sorted elements with no intermediate list. foldUDFM is INLINE and dispatches through the out-of-line fold_elts_nonempty, where the fusion happens once -- so the fold is list-free without inlining the sort into every consumer. -Holes: slots whose tag never occurs keep the initial sentinel, the nullary -constructor TaggedHole. The readout distinguishes it from a real TaggedVal by -constructor, so it never touches a filled element's value in a hole slot. -TaggedHole is static (a nullary constructor is a single shared closure), so -newSmallArray fills every slot with the same pointer -- no per-call allocation, -nothing retained. TaggedHole must never be stored in a map; the accessors -(taggedFst, taggedSnd) panic on it to catch any invariant violation. +Holes: slots whose tag never occurs keep the initial sentinel, a TaggedVal +with tag -1. Real tags are non-negative, so the readout skips slots with +tag < 0 and takes the value field only from filled slots. That value field +is strict, so the sentinel must hold something in WHNF even though it is +never used: we use @unsafeCoerce () :: r@. This is safe because + + (S1) r is a lifted boxed type (it is the map's element type), so a + pointer to the static () closure has the right representation and + the GC can trace it; and + + (S2) the coerced value is never entered or otherwise used at type r: + the sentinel is the only TaggedVal with a negative tag, and the + readout takes values only from slots with tag >= 0. + +Since () is a single static closure, newSmallArray fills every slot with +the same pointer: no per-call allocation, nothing retained. + +The sentinel stays local to placementSort: it exists only in the array +between fill and readout, never in a map, so nothing outside this function +needs to know about it. Alternative hole representations all cost more: + + * a panic in the value field: forced (the field is strict) as soon as + the readout inspects the first hole's tag -- a crash, not a sentinel; + * borrowing a real element of the map: type-checks, but is a per-call + thunk that retains the whole source map until the holes are dropped; + * a dedicated hole constructor in TaggedVal: no coercion, but the + sentinel leaks into the type -- every match in this module must cover + a constructor that never occurs outside placementSort, and projecting + via partial accessors instead allocates a thunk wherever the value is + passed to an unknown function (T24471 ghc/alloc +3%); + * an extra sum wrapped around the array elements (e.g. Maybe): an + allocation per element in the fill. This sorting method loses when ub is much larger than n = M.size m: ub never shrinks (overwrites keep bumping it, delete/filter shrink n but not ub). We @@ -484,10 +503,10 @@ placementSort :: forall e r. Int -- consuming fold. See Note [Sorting a UDFM]. placementSort ub mk m = build gen where - -- Unfilled slots hold the TaggedHole sentinel; the readout skips it. - -- See Note [Sorting a UDFM]. + -- The tag -1 marks unfilled slots; the value field is never read, but it + -- is strict, so it needs a WHNF value of type r. See Note [Sorting a UDFM]. hole :: TaggedVal r - hole = TaggedHole + hole = TaggedVal (unsafeCoerce ()) (-1) fill :: SmallMutableArray s (TaggedVal r) -> State# s -> (# State# s, () #) fill marr s = case M.traverseWithKey_ write m of ST st -> st s @@ -508,17 +527,17 @@ placementSort ub mk m = build gen readout :: SmallArray (TaggedVal r) -> Int -> b readout arr j | j >= ub = nil - | otherwise = case indexSmallArray arr j of - TaggedHole -> readout arr (j + 1) - TaggedVal v _ -> cons v (readout arr (j + 1)) + | t < 0 = readout arr (j + 1) + | otherwise = cons v (readout arr (j + 1)) + where TaggedVal v t = indexSmallArray arr j filterUDFM :: (elt -> Bool) -> UniqDFM key elt -> UniqDFM key elt -filterUDFM p (UDFM m i) = UDFM (M.filter (p . taggedFst) m) i +filterUDFM p (UDFM m i) = UDFM (M.filter (\(TaggedVal v _) -> p v) m) i filterUDFM_Directly :: (Unique -> elt -> Bool) -> UniqDFM key elt -> UniqDFM key elt filterUDFM_Directly p (UDFM m i) = UDFM (M.filterWithKey p' m) i where - p' k tv = p (mkUniqueGrimily k) (taggedFst tv) + p' k (TaggedVal v _) = p (mkUniqueGrimily k) v udfmRestrictKeys :: UniqDFM key elt -> UniqDFM key elt2 -> UniqDFM key elt udfmRestrictKeys (UDFM a i) (UDFM b _) = UDFM (M.restrictKeys a (M.keysSet b)) i @@ -642,7 +661,7 @@ alterUDFM f (UDFM m i) k = UDFM (M.alter alterf (getKey $ getUnique k) m) (i + 1) where alterf Nothing = inject $ f Nothing - alterf (Just tv) = inject $ f (Just (taggedFst tv)) + alterf (Just (TaggedVal v _)) = inject $ f (Just v) inject Nothing = Nothing inject (Just v) = Just $ TaggedVal v i @@ -661,7 +680,7 @@ upsertUDFM f (UDFM m i) k = UDFM (MS.upsert upsertf (getKey $ getUnique k) m) (i + 1) where upsertf Nothing = TaggedVal (f Nothing) i - upsertf (Just tv) = TaggedVal (f (Just (taggedFst tv))) i + upsertf (Just (TaggedVal v _)) = TaggedVal (f (Just v)) i -- | The expression (@'alterUDFM_L' f map k@) alters value @x@ at @k@, or absence -- thereof and returns the new element at @k@ if there is any. @@ -684,7 +703,7 @@ alterUDFM_L f (UDFM m i) k = where alterf :: Maybe (TaggedVal elt) -> (Maybe (TaggedVal elt)) alterf Nothing = inject $ f Nothing - alterf (Just tv) = inject $ f (Just (taggedFst tv)) + alterf (Just (TaggedVal v _)) = inject $ f (Just v) inject Nothing = Nothing inject (Just v) = Just $ TaggedVal v i View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a70e4b4285630695aecc61665101c0… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a70e4b4285630695aecc61665101c0… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/mangoiv/metrics-changes
by Magnus (＠MangoIV) 11 Jul '26

11 Jul '26

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

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[Git][ghc/ghc][wip/mangoiv/9.12.5-rc3-fixes] Don't make absent fillers for terminating types
by Magnus (＠MangoIV) 11 Jul '26

11 Jul '26

Magnus pushed to branch wip/mangoiv/9.12.5-rc3-fixes at Glasgow Haskell Compiler / GHC Commits: f7e9b9c5 by Zubin Duggal at 2026-07-11T11:19:06+02:00 Don't make absent fillers for terminating types In #25924 we discovered that we could speculatively evaluate an absent filler for a dictionary, and project a field (a superclass selector) out of it, resulting in segfaults. Solution: Never make an absent filler or rubbish literal for a terminating type like a dictionary. mkAbsentFiller returns Nothing for isTerminatingType, so worker/wrapper and the specialiser keep the real argument instead. Some small metric decreases because we do a little less work in the simplifier now. Metric Decrease: T9872a T9872b T9872c TcPlugin_RewritePerf Metric Increase: T9872b_defer (cherry picked from commit 4a59b3eece9b7106fcbe73d2d06a49755be4ea8f) - - - - - 8 changed files: - changelog.d/fix-absent-dict-projection - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Opt/WorkWrap.hs - compiler/GHC/Core/Opt/WorkWrap/Utils.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Types/Literal.hs - testsuite/tests/dmdanal/should_compile/T18982.stderr Changes: ===================================== changelog.d/fix-absent-dict-projection ===================================== @@ -1,5 +1,8 @@ section: compiler -synopsis: Fix a CorePrep miscompilation that could project a field out of an absent dictionary, resulting in a segfault. +synopsis: Fix a miscompilation that could project a field out of an absent dictionary, resulting in a segfault. issues: #25924 mrs: !16219 -description: We no longer speculatively evaluate bindings that we have already discovered are absent. +description: + We no longer make an absent filler (a rubbish literal or error thunk) for an + absent dictionary or other terminating type. We also no longer speculatively + evaluate a binding once we have discovered that it is absent. ===================================== compiler/GHC/Core/Make.hs ===================================== @@ -219,13 +219,16 @@ mkLitRubbish :: Type -> Maybe CoreExpr -- Fail (returning Nothing) if -- * the RuntimeRep of the Type is not monomorphic; -- * the type is (a ~# b), the type of coercion --- See INVARIANT 1 and 2 of item (2) in Note [Rubbish literals] +-- * the type is terminating (isTerminatingType), e.g. a dictionary +-- See INVARIANT 1, 2 and 3 of item (2) in Note [Rubbish literals] -- in GHC.Types.Literal mkLitRubbish ty | not (noFreeVarsOfType rep) = Nothing -- Satisfy INVARIANT 1 | isCoVarType ty = Nothing -- Satisfy INVARIANT 2 + | isTerminatingType ty + = Nothing -- Satisfy INVARIANT 3 | otherwise = Just (Lit (LitRubbish torc rep) `mkTyApps` [ty]) where ===================================== compiler/GHC/Core/Opt/Specialise.hs ===================================== @@ -20,11 +20,13 @@ import GHC.Core.Multiplicity import GHC.Core.SimpleOpt( defaultSimpleOpts, simpleOptExprWith ) import GHC.Core.Predicate import GHC.Core.Coercion( Coercion ) +import GHC.Core.DataCon ( StrictnessMark (..) ) import GHC.Core.Opt.Monad + import qualified GHC.Core.Subst as Core import GHC.Core.Unfold.Make import GHC.Core -import GHC.Core.Make ( mkLitRubbish ) +import GHC.Core.Opt.WorkWrap.Utils ( mkAbsentFiller ) import GHC.Core.Unify ( tcMatchTy ) import GHC.Core.Rules import GHC.Core.Utils ( exprIsTrivial, exprIsTopLevelBindable @@ -1711,7 +1713,7 @@ specCalls spec_imp env existing_rules calls_for_me fn rhs ; ( useful, rhs_env2, leftover_bndrs , rule_bndrs, rule_lhs_args - , spec_bndrs1, dx_binds, spec_args) <- specHeader env rhs_bndrs all_call_args + , spec_bndrs1, dx_binds, spec_args) <- specHeader this_mod env rhs_bndrs all_call_args -- ; pprTrace "spec_call" (vcat -- [ text "fun: " <+> ppr fn @@ -2562,7 +2564,8 @@ isSpecDict _ = False -- , [T1, T2, c, i, dEqT1, dShow1] -- ) specHeader - :: SpecEnv + :: Module -- The module being compiled, for mkAbsentFiller + -> SpecEnv -> [InBndr] -- The binders from the original function 'f' -> [SpecArg] -- From the CallInfo -> SpecM ( Bool -- True <=> some useful specialisation happened @@ -2588,7 +2591,7 @@ specHeader -- We want to specialise on type 'T1', and so we must construct a substitution -- 'a->T1', as well as a LHS argument for the resulting RULE and unfolding -- details. -specHeader env (bndr : bndrs) (SpecType ty : args) +specHeader mod env (bndr : bndrs) (SpecType ty : args) = do { -- Find qvars, the type variables to add to the binders for the rule -- Namely those free in `ty` that aren't in scope -- See (MP2) in Note [Specialising polymorphic dictionaries] @@ -2600,7 +2603,7 @@ specHeader env (bndr : bndrs) (SpecType ty : args) ty' = substTy env1 ty env2 = extendTvSubst env1 bndr ty' ; (useful, env3, leftover_bndrs, rule_bs, rule_es, bs', dx, spec_args) - <- specHeader env2 bndrs args + <- specHeader mod env2 bndrs args ; pure ( useful , env3 , leftover_bndrs @@ -2616,10 +2619,10 @@ specHeader env (bndr : bndrs) (SpecType ty : args) -- a substitution on it (in case the type refers to 'a'). Additionally, we need -- to produce a binder, LHS argument and RHS argument for the resulting rule, -- /and/ a binder for the specialised body. -specHeader env (bndr : bndrs) (UnspecType : args) +specHeader mod env (bndr : bndrs) (UnspecType : args) = do { let (env', bndr') = substBndr env bndr ; (useful, env'', leftover_bndrs, rule_bs, rule_es, bs', dx, spec_args) - <- specHeader env' bndrs args + <- specHeader mod env' bndrs args ; pure ( useful , env'' , leftover_bndrs @@ -2630,18 +2633,17 @@ specHeader env (bndr : bndrs) (UnspecType : args) , varToCoreExpr bndr' : spec_args ) } - -- Next we want to specialise the 'Eq a' dict away. We need to construct -- a wildcard binder to match the dictionary (See Note [Specialising Calls] for -- the nitty-gritty), as a LHS rule and unfolding details. -specHeader env (bndr : bndrs) (SpecDict d : args) +specHeader mod env (bndr : bndrs) (SpecDict d : args) | not (isDeadBinder bndr) , allVarSet (`elemInScopeSet` in_scope) (exprFreeVars d) -- See Note [Weird special case for SpecDict] = do { (env1, bndr') <- newDictBndr env bndr -- See Note [Zap occ info in rule binders] ; let (env2, dx_bind, spec_dict) = bindAuxiliaryDict env1 bndr bndr' d ; (_, env3, leftover_bndrs, rule_bs, rule_es, bs', dx, spec_args) - <- specHeader env2 bndrs args + <- specHeader mod env2 bndrs args ; pure ( True -- Ha! A useful specialisation! , env3 , leftover_bndrs @@ -2666,21 +2668,24 @@ specHeader env (bndr : bndrs) (SpecDict d : args) -- why 'i' doesn't appear in our RULE above. But we have no guarantee that -- there aren't 'UnspecArg's which come /before/ all of the dictionaries, so -- this case must be here. -specHeader env (bndr : bndrs) (_ : args) +specHeader mod env (bndr : bndrs) (_ : args) -- The "_" can be UnSpecArg, or SpecDict where the bndr is dead = do { -- see Note [Zap occ info in rule binders] let (env', bndr') = substBndr env (zapIdOccInfo bndr) ; (useful, env'', leftover_bndrs, rule_bs, rule_es, bs', dx, spec_args) - <- specHeader env' bndrs args - - ; let bndr_ty = idType bndr' + <- specHeader mod env' bndrs args - -- See Note [Drop dead args from specialisations] + ; let -- See Note [Drop dead args from specialisations] -- C.f. GHC.Core.Opt.WorkWrap.Utils.mk_absent_let (mb_spec_bndr, spec_arg) | isDeadBinder bndr - , Just lit_expr <- mkLitRubbish bndr_ty - = (Nothing, lit_expr) + , Just filler <- mkAbsentFiller mod bndr' NotMarkedStrict + -- NB: mkAbsentFiller returns Nothing for a terminating type (e.g. a + -- dictionary), so this guard fails and we fall through, keeping the + -- argument instead of dropping it. + -- See Note [Don't make fillers for terminating types] + -- in GHC.Core.Opt.WorkWrap.Utils + = (Nothing, filler) | otherwise = (Just bndr', varToCoreExpr bndr') @@ -2699,12 +2704,12 @@ specHeader env (bndr : bndrs) (_ : args) -- If we run out of binders, stop immediately -- See Note [Specialisation Must Preserve Sharing] -specHeader env [] _ = pure (False, env, [], [], [], [], [], []) +specHeader _ env [] _ = pure (False, env, [], [], [], [], [], []) -- Return all remaining binders from the original function. These have the -- invariant that they should all correspond to unspecialised arguments, so -- it's safe to stop processing at this point. -specHeader env bndrs [] +specHeader _ env bndrs [] = pure (False, env', bndrs', [], [], [], [], []) where (env', bndrs') = substBndrs env bndrs ===================================== compiler/GHC/Core/Opt/WorkWrap.hs ===================================== @@ -550,7 +550,7 @@ tryWW ww_opts is_rec fn_id rhs -- See Note [Drop absent bindings] | isAbsDmd (demandInfo fn_info) , not (isJoinId fn_id) - , Just filler <- mkAbsentFiller ww_opts fn_id NotMarkedStrict + , Just filler <- mkAbsentFiller (wo_module ww_opts) fn_id NotMarkedStrict = return [(new_fn_id, filler)] -- See Note [Don't w/w INLINE things] ===================================== compiler/GHC/Core/Opt/WorkWrap/Utils.hs ===================================== @@ -29,7 +29,6 @@ import GHC.Core.Subst import GHC.Core.Type import GHC.Core.Multiplicity import GHC.Core.Coercion -import GHC.Core.Predicate( isDictTy ) import GHC.Core.Reduction import GHC.Core.FamInstEnv import GHC.Core.TyCon @@ -936,7 +935,7 @@ mkWWstr_one opts arg str_mark = _ | isTyVar arg -> do_nothing DropAbsent - | Just absent_filler <- mkAbsentFiller opts arg str_mark + | Just absent_filler <- mkAbsentFiller (wo_module opts) arg str_mark -- Absent case. Drop the argument from the worker. -- We can't always handle absence for arbitrary -- unlifted types, so we need to choose just the cases we can @@ -1007,14 +1006,20 @@ unbox_one_arg opts arg_var -- -- If @mkAbsentFiller _ id == Just e@, then @e@ is an absent filler with the -- same type as @id@. Otherwise, no suitable filler could be found. -mkAbsentFiller :: WwOpts -> Id -> StrictnessMark -> Maybe CoreExpr -mkAbsentFiller opts arg str +mkAbsentFiller :: Module -> Id -> StrictnessMark -> Maybe CoreExpr +mkAbsentFiller mod arg str + -- We never make a filler for a terminating type: it might be speculatively + -- evaluated or have a field projected out of it. + -- See (AF4) in Note [Absent fillers], and + -- Note [Don't make fillers for terminating types]. + | isTerminatingType arg_ty + = Nothing + -- The lifted case: bind 'absentError'. See (AF1) in Note [Absent fillers] -- We want to use this case if possible, because we get a nice runtime panic message -- if we are wrong (like we were in #11126). Otherwise we fall through to the -- less-desirable mkLitRubbish case. | mightBeLiftedType arg_ty - , not (isDictTy arg_ty) -- See (AF4) in Note [Absent fillers] , not (isStrictDmd (idDemandInfo arg)) -- See (AF2) , not (isMarkedStrict str) -- in Note [Absent fillers] = Just (mkAbsentErrorApp arg_ty msg) @@ -1041,7 +1046,7 @@ mkAbsentFiller opts arg str -- will have different lengths and hence different costs for -- the inliner leading to different inlining. -- See also Note [Unique Determinism] in GHC.Types.Unique - file_msg = text "In module" <+> quotes (ppr $ wo_module opts) + file_msg = text "In module" <+> quotes (ppr mod) {- Note [Worker/wrapper for Strictness and Absence] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -1234,27 +1239,8 @@ Needless to say, there are some wrinkles: have to be representation monomorphic. But in the future, we might allow levity polymorphism, e.g. a polymorphic levity variable in 'BoxedRep'. -(AF4) Consider (#24934) - f :: (a~b) => blah {-# INLINE f #-} - f d x = case eq_sel d of co -> body - In #24934 it turned out that `co` was unused; and we discarded the - entire case-scrutinisation via the `exprOkToDiscard` test in - `GHC.Core.Opt.Simplify.Iteration.rebuildCase`. So now `d` is absent. - But in the /unfolding/ for some reason we did not discard the `case`; - so when we inline `f` we end up evaluating that `d` argument. So we had - better not replace it with an error thunk! - - The root of it is this: `exprOkToDiscard` assumes that a dictionary is - non-bottom (Note [exprOkForSpeculation and type classes]); but then we replace - the (a~b) dictionary with an error thunk, breaking the invariant that every - dictionary is non-bottom. (If -XDictsStrict is on, the invariant is even - more important.) - - Simple solution: never use an error thunk for a dictionary; instead fall - through to mkRubbishLit. (The only downside is that we lose the compiler - debugging advantages of (AF1).) - - This is quite delicate. +(AF4) We never make an absent filler for a terminating type. + See Note [Don't make fillers for terminating types]. While (AF1) and (AF2) are simply an optimisation in terms of compiler debugging experience, (AF3) should be irrelevant in most programs, if not all. @@ -1276,6 +1262,47 @@ fragile because `MkT` is strict in its Int# argument, so we get an absentError exception when we shouldn't. Very annoying! +Note [Don't make fillers for terminating types] +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +We never make an absent filler, error thunk or rubbish literal, for a terminating +type (isTerminatingType): a non-unary class dictionary, a boxed equality, or a +constraint tuple. + +GHC relies on a dictionary value never being bottom (see +Note [NON-BOTTOM-DICTS invariant] in GHC.Core). GHC uses "speculation" to +evaluated guaranteed-non-bottom values: see Note [Speculative evaluation] in +GHC.CoreToStg.Prep. This speculative evaluation is fundamentally incompatible +with replacing a dictionary with an absent filler. Attempts to to do so gave +rise to a succession of bugs including: + + * #24934: we evaluated an absent dictionary + * #25924: we selected a superclass from an absent dictionary + +A terminating type is exactly what speculation will force: see +Note [exprOkForSpeculation and type classes] in GHC.Core.Utils. So we refuse to +make a filler for precisely those types. + +So the safe thing is to make no filler at all for a terminating type. Then there +is no bogus dictionary to evaluate or project from. Specifically + + * `mkAbsentFiller` returns `Nothing` for a terminating type, so worker/wrapper + keeps the real argument. + + * `Specialise.specHeader` calls `mkAbsentFiller` too, so it likewise keeps the + dead dictionary argument rather than dropping it for a filler. + +Prior failed approaches + +We used to paper over this. !13233 replaced the error thunk for an absent +dictionary with a rubbish literal, so that it could at least be evaluated +without complaint. But #25924 showed that this is not enough, because we do not +only evaluate the absent dictionary, we also select a superclass from it. + +We could instead teach speculation to leave absent bindings alone, and we do +that too (see Note [Speculative evaluation] in GHC.CoreToStg.Prep). But that is +not a guarantee. After optimisation a binding that holds an absent filler may no +longer be marked absent, so we cannot rely on the demand to protect us. + Note [Unboxing through unboxed tuples] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We should not to a worker/wrapper split just for unboxing the components of ===================================== compiler/GHC/CoreToStg/Prep.hs ===================================== @@ -1960,20 +1960,19 @@ It is also similar to Note [Do not strictify a DFun's parameter dictionaries], where marking recursive DFuns (of undecidable *instances*) strict in dictionary *parameters* leads to quite the same change in termination as above. -Another Nasty Wrinkle: do not speculate absent bindings +Belt and braces: do not speculate absent bindings -Speculative evaluation is in conflict with absent fillers (see Note [Absent -fillers] in GHC.Core.Opt.WorkWrap.Utils). +In 'decideFloatInfo' we decline to speculate a binding whose demand is absent. +There is no point in speculating an absent binding, since its value is +(presumably) not needed. -When an argument is found to be absent, worker/wrapper drops it and binds an -absent filler in its place. This is supposed to be OK because the filler is -absent (i.e. not evaluated by the program). - -But speculation can force it anyway! See #25924 for how this goes wrong. - -So in 'decideFloatInfo' we decline to speculate a binding whose demand is -absent. An absent value is by definition never needed, so we lose nothing by not -speculating it. +This used to matter more. Worker/wrapper would bind an absent dictionary to a +rubbish literal filler, and speculation could force a superclass selection out +of that rubbish literal, causing a segfault (#25924). Nowadays we never make a +filler for a dictionary in the first place, so this can no longer happen and +the guard is merely belt and braces. +See Note [Don't make fillers for terminating types] +in GHC.Core.Opt.WorkWrap.Utils. Note [BindInfo and FloatInfo] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -2227,7 +2226,7 @@ mkNonRecFloat env is_unlifted bndr rhs -- (where it is actually bound lazily). -- -- Don't speculate an absent binding. See #25924 and - -- "Another Nasty Wrinkle" in Note [Speculative evaluation]. + -- "Belt and braces" in Note [Speculative evaluation]. | is_unlifted || is_strict = (CaseBound, StrictContextFloatable) -- These will never be floated out of a lazy RHS context ===================================== compiler/GHC/Types/Literal.hs ===================================== @@ -988,6 +988,14 @@ data type. Here are the moving parts: This is sad, though: see #18983. + INVARIANT 3: we never make a rubbish literal of a terminating type + (isTerminatingType), such as a class dictionary. GHC relies on a value of + a terminating type never being bottom, and so may speculatively evaluate + a dictionary or select a superclass from it. Either would crash on a + rubbish literal (#24934, #25924). + See Note [Don't make fillers for terminating types] + in GHC.Core.Opt.WorkWrap.Utils. + 3. STG: The type app in `RUBBISH[IntRep] @Int# :: Int#` is erased and we get the (untyped) 'StgLit' `RUBBISH[IntRep] :: Int#` in STG. ===================================== testsuite/tests/dmdanal/should_compile/T18982.stderr ===================================== @@ -1,6 +1,6 @@ ==================== Tidy Core ==================== -Result size of Tidy Core = {terms: 295, types: 206, coercions: 4, joins: 0/0} +Result size of Tidy Core = {terms: 297, types: 214, coercions: 4, joins: 0/0} -- RHS size: {terms: 8, types: 9, coercions: 1, joins: 0/0} T18982.$WExGADT :: forall e. (e ~ Int) => e %1 -> Int %1 -> ExGADT Int @@ -194,13 +194,13 @@ T18982.$tc'ExGADT2 = GHC.Types.TrNameS T18982.$tc'ExGADT3 T18982.$tc'ExGADT :: GHC.Types.TyCon T18982.$tc'ExGADT = GHC.Types.TyCon 8468257409157161049#Word64 5503123603717080600#Word64 T18982.$trModule T18982.$tc'ExGADT2 1# T18982.$tc'ExGADT1 --- RHS size: {terms: 11, types: 10, coercions: 0, joins: 0/0} -T18982.$wi :: forall a e. (a GHC.Prim.~# Int) => e -> GHC.Prim.Int# -> GHC.Prim.Int# -T18982.$wi = \ (@a) (@e) (ww :: a GHC.Prim.~# Int) (ww1 :: e) (ww2 :: GHC.Prim.Int#) -> case ww1 of { __DEFAULT -> GHC.Prim.+# ww2 1# } +-- RHS size: {terms: 12, types: 14, coercions: 0, joins: 0/0} +T18982.$wi :: forall a e. (a GHC.Prim.~# Int, e ~ Int) => e -> GHC.Prim.Int# -> GHC.Prim.Int# +T18982.$wi = \ (@a) (@e) (ww :: a GHC.Prim.~# Int) _ (ww2 :: e) (ww3 :: GHC.Prim.Int#) -> case ww2 of { __DEFAULT -> GHC.Prim.+# ww3 1# } --- RHS size: {terms: 15, types: 22, coercions: 1, joins: 0/0} +-- RHS size: {terms: 16, types: 22, coercions: 1, joins: 0/0} i :: forall a. ExGADT a -> Int -i = \ (@a) (ds :: ExGADT a) -> case ds of { ExGADT @e ww ww1 ww2 ww3 -> case ww3 of { GHC.Types.I# ww4 -> case T18982.$wi @a @e @~(ww :: a GHC.Prim.~# Int) ww2 ww4 of ww5 { __DEFAULT -> GHC.Types.I# ww5 } } } +i = \ (@a) (ds :: ExGADT a) -> case ds of { ExGADT @e ww ww1 ww2 ww3 -> case ww3 of { GHC.Types.I# ww4 -> case T18982.$wi @a @e @~(ww :: a GHC.Prim.~# Int) ww1 ww2 ww4 of ww5 { __DEFAULT -> GHC.Types.I# ww5 } } } -- RHS size: {terms: 6, types: 7, coercions: 0, joins: 0/0} T18982.$wh :: forall a. (a GHC.Prim.~# Int) => GHC.Prim.Int# -> GHC.Prim.Int# View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f7e9b9c5fd79c402f609fd7dab2ea59… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f7e9b9c5fd79c402f609fd7dab2ea59… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/az/exactprint-annotation-rationalisation] 17 commits: driver: enable -finter-module-far-jumps by default
by Alan Zimmerman (＠alanz) 11 Jul '26

11 Jul '26

Alan Zimmerman pushed to branch wip/az/exactprint-annotation-rationalisation at Glasgow Haskell Compiler / GHC Commits: 57c0f32c by mangoiv at 2026-07-10T11:08:38-04:00 driver: enable -finter-module-far-jumps by default this fixes a compatibility bug with certain binutils/gcc versions where we were seeing jump offset overflow errors. This commit can probably reverted if we stop supporting the problematic binutils/gcc verions (2.44 and 14.2, respectively) Reolves #26994 - - - - - 4396a6f2 by Andrea Vezzosi at 2026-07-10T11:09:25-04:00 [Fix #27287] preserve ModBreaks in ModIface - - - - - aeff6d4c by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Keep binds and sigs together in HsValBindsLR We combine them into a single list for GhcPs, wrapped in the ValBind data type, which is the bind equivalent of ValD, having constructors for binds and sigs. This simplifies exact print processing, especially when using it to update the contents of local binds, as we no longer need AnnSortKey BindTag - - - - - 5ce8f3f7 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 Keep decls together in ClassDecl - - - - - 274e1bb8 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: ClsInstDecl as list in GhcPs - - - - - 56a47561 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedP from OverlapMode - - - - - fe150e42 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedP from CType - - - - - 69fbe0c2 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedP, last use in WarningTxt - - - - - 1db4ebb1 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedE from WarningCategory - - - - - ceb15eab by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocateE from XCImport and XCExport - - - - - deb62ecc by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedE from HsRecFields dot - - - - - 7c2883a3 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedE completely, last usage for pats - - - - - 6bfa18a8 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove AnnList (EpToken "where") usages This is moving toward removing the parameter from AnnList completely - - - - - 7342b6a2 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA remove AnnList (EpToken "rec") usages - - - - - e971a8e0 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove last parameterised AnnList usage (EpaLocation) Also remove the parameter - - - - - 912ed197 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 TTG: Add extension points to BooleanFormula They are currently unused, but will be used for exact print annotations next - - - - - 894f1a62 by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Remove LocatedBC / SrcSpanBF - - - - - 100 changed files: - + changelog.d/inter-module-far-jumps-aarch64-default - compiler/GHC/Builtin/Utils.hs - compiler/GHC/ByteCode/Breakpoints.hs - compiler/GHC/ByteCode/Types.hs - compiler/GHC/Core/Class.hs - compiler/GHC/CoreToIface.hs - compiler/GHC/Data/BooleanFormula.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Main/Compile.hs - compiler/GHC/Driver/Main/Hsc.hs - compiler/GHC/Driver/Main/Passes.hs - compiler/GHC/Hs/Binds.hs - compiler/GHC/Hs/Decls.hs - compiler/GHC/Hs/Decls/Overlap.hs - compiler/GHC/Hs/Dump.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Pat.hs - compiler/GHC/Hs/Stats.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Breakpoints.hs - + compiler/GHC/HsToCore/Breakpoints/Types.hs - compiler/GHC/HsToCore/Docs.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Iface/Make.hs - compiler/GHC/Iface/Recomp.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Warnings.hs - compiler/GHC/IfaceToCore.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Annotation.hs - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Parser/PostProcess/Haddock.hs - compiler/GHC/Platform/Ways.hs - compiler/GHC/Rename/Bind.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Eval.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/Tc/TyCl.hs - compiler/GHC/Tc/TyCl/Class.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/Utils/Env.hs - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/ForeignCall.hs - compiler/GHC/Unit/Module/ModGuts.hs - compiler/GHC/Unit/Module/ModIface.hs - compiler/GHC/Unit/Module/Warnings.hs - compiler/GHC/Unit/Module/WholeCoreBindings.hs - compiler/GHC/Utils/Binary.hs - compiler/Language/Haskell/Syntax/Binds.hs - compiler/Language/Haskell/Syntax/BooleanFormula.hs - compiler/Language/Haskell/Syntax/Decls.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/ghc.cabal.in - docs/users_guide/using-optimisation.rst - ghc/GHCi/UI.hs - testsuite/tests/count-deps/CountDepsParser.stdout - testsuite/tests/ghc-api/T25121_status.stdout - testsuite/tests/ghc-api/exactprint/T22919.stderr - testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr - testsuite/tests/ghci/should_run/Makefile - + testsuite/tests/ghci/should_run/T27287.hs - + testsuite/tests/ghci/should_run/T27287.stdout - testsuite/tests/ghci/should_run/all.T - testsuite/tests/haddock/haddock_examples/haddock.Test.stderr - testsuite/tests/haddock/should_compile_flag_haddock/T17544.stderr - testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr - testsuite/tests/module/mod185.stderr - testsuite/tests/parser/should_compile/DumpParsedAst.stderr - testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr - testsuite/tests/parser/should_compile/DumpRenamedAst.stderr - testsuite/tests/parser/should_compile/DumpSemis.stderr - testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr - testsuite/tests/parser/should_compile/KindSigs.stderr - testsuite/tests/parser/should_compile/T15279.stderr - testsuite/tests/parser/should_compile/T20452.stderr - testsuite/tests/parser/should_compile/T20718.stderr - testsuite/tests/parser/should_compile/T20846.stderr - testsuite/tests/printer/Test20297.stdout - testsuite/tests/printer/Test24533.stdout - utils/check-exact/ExactPrint.hs - utils/check-exact/Main.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hoogle.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/GhcUtils.hs - utils/haddock/haddock-api/src/Haddock/Interface/Create.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/-/compare/ba591afffd311bafb66781d0c74f69… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/ba591afffd311bafb66781d0c74f69… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/az/epa-tidy-locatedxxx-7] 3 commits: driver: enable -finter-module-far-jumps by default
by Alan Zimmerman (＠alanz) 11 Jul '26

11 Jul '26

Alan Zimmerman pushed to branch wip/az/epa-tidy-locatedxxx-7 at Glasgow Haskell Compiler / GHC Commits: 57c0f32c by mangoiv at 2026-07-10T11:08:38-04:00 driver: enable -finter-module-far-jumps by default this fixes a compatibility bug with certain binutils/gcc versions where we were seeing jump offset overflow errors. This commit can probably reverted if we stop supporting the problematic binutils/gcc verions (2.44 and 14.2, respectively) Reolves #26994 - - - - - 4396a6f2 by Andrea Vezzosi at 2026-07-10T11:09:25-04:00 [Fix #27287] preserve ModBreaks in ModIface - - - - - aeff6d4c by Alan Zimmerman at 2026-07-11T10:15:24+01:00 EPA: Keep binds and sigs together in HsValBindsLR We combine them into a single list for GhcPs, wrapped in the ValBind data type, which is the bind equivalent of ValD, having constructors for binds and sigs. This simplifies exact print processing, especially when using it to update the contents of local binds, as we no longer need AnnSortKey BindTag - - - - - 49 changed files: - + changelog.d/inter-module-far-jumps-aarch64-default - compiler/GHC/ByteCode/Breakpoints.hs - compiler/GHC/ByteCode/Types.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Main/Compile.hs - compiler/GHC/Driver/Main/Hsc.hs - compiler/GHC/Driver/Main/Passes.hs - compiler/GHC/Hs/Binds.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Breakpoints.hs - + compiler/GHC/HsToCore/Breakpoints/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Iface/Make.hs - compiler/GHC/Iface/Recomp.hs - compiler/GHC/Parser/Annotation.hs - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Platform/Ways.hs - compiler/GHC/Rename/Bind.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Eval.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Unit/Module/ModGuts.hs - compiler/GHC/Unit/Module/ModIface.hs - compiler/GHC/Unit/Module/WholeCoreBindings.hs - compiler/GHC/Utils/Binary.hs - compiler/Language/Haskell/Syntax/Binds.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/ghc.cabal.in - docs/users_guide/using-optimisation.rst - ghc/GHCi/UI.hs - testsuite/tests/count-deps/CountDepsParser.stdout - testsuite/tests/ghci/should_run/Makefile - + testsuite/tests/ghci/should_run/T27287.hs - + testsuite/tests/ghci/should_run/T27287.stdout - testsuite/tests/ghci/should_run/all.T - testsuite/tests/parser/should_compile/DumpSemis.stderr - testsuite/tests/printer/Test20297.stdout - utils/check-exact/ExactPrint.hs - utils/check-exact/Main.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/3a4a66b663a59a410f74ddd242c265… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/3a4a66b663a59a410f74ddd242c265… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-reinstallable-base2] Major patch to re-engineer known-key names
by Rodrigo Mesquita (＠alt-romes) 11 Jul '26

11 Jul '26

Rodrigo Mesquita pushed to branch wip/spj-reinstallable-base2 at Glasgow Haskell Compiler / GHC Commits: 7a5b9bbc by Simon Peyton Jones at 2026-07-11T09:30:23+01:00 Major patch to re-engineer known-key names This big patch implements the New Plan for known-key names, described in #27013. Read the big Note [Overview of known-key names] in GHC.Types.Name Some things had to be reworked slightly to accomodate the new known-keys design. A significant one was the generation of auxiliary KindRep bindings, which was greatly simplified. Note [Grand plan for Typeable] was updated accordingly. Another example: GHC.Internal.CString was merged into GHC.Internal.Types. Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita(a)gmail.com> The couple hundreds of hours spent here by Rodrigo were sponsored by Well-Typed Metrics: compile_time/bytes allocated ------------------------------------- Baseline Test Metric value New value Change ------------------------------------------------------------------------------------------ MultiComponentModules100(normal) ghc/alloc 24,312,779,672 24,990,470,432 +2.8% BAD MultiComponentModulesRecomp(normal) ghc/alloc 601,924,960 621,884,888 +3.3% BAD MultiComponentModulesRecomp100(normal) ghc/alloc 11,884,065,432 12,531,373,704 +5.4% BAD MultiLayerModules(normal) ghc/alloc 3,861,537,072 3,706,919,512 -4.0% GOOD T13701(normal) ghc/alloc 3,517,246,392 3,237,179,616 -8.0% GOOD T13820(normal) ghc/alloc 28,961,056 29,663,208 +2.4% BAD T14697(normal) ghc/alloc 472,044,184 443,550,048 -6.0% GOOD T18140(normal) ghc/alloc 47,905,664 49,115,808 +2.5% BAD T4801(normal) ghc/alloc 269,339,096 263,432,040 -2.2% GOOD T783(normal) ghc/alloc 341,112,672 333,339,952 -2.3% GOOD hard_hole_fits(normal) ghc/alloc 222,164,728 213,433,808 -3.9% GOOD mhu-perf(normal) ghc/alloc 49,011,440 46,706,280 -4.7% GOOD geo. mean +0.1% minimum -8.0% maximum +5.4% All performance regressions were investigated in depth. The surviving ones: - MultiComponentModules100, MultiComponentModulesRecomp100, MultiComponentModulesRecomp regresses because existing bugs that make an additional implicit edge do too much redundant work: #27053 and #27461 - T13820, T18140, T10547 regress because we load an additional interface and associated Names for GHC.Essentials. ------------------------- Metric Decrease: MultiLayerModules T13701 T14697 T4801 T783 hard_hole_fits mhu-perf size_hello_obj Metric Increase: LinkableUsage01 MultiComponentModules100 MultiComponentModulesRecomp MultiComponentModulesRecomp100 T10547 T13820 T18140 T20049 ------------------------- - - - - - 728 changed files: - + changelog.d/refactor-known-names - compiler/GHC.hs - + compiler/GHC/Builtin.hs - + compiler/GHC/Builtin/KnownKeys.hs - + compiler/GHC/Builtin/KnownOccs.hs - + compiler/GHC/Builtin/Modules.hs - − compiler/GHC/Builtin/Names.hs - − compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/PrimOps/Casts.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - + compiler/GHC/Builtin/TH.hs - compiler/GHC/Builtin/Uniques.hs - compiler/GHC/Builtin/Uniques.hs-boot - − compiler/GHC/Builtin/Utils.hs - + compiler/GHC/Builtin/WiredIn/Ids.hs - compiler/GHC/Builtin/Types/Prim.hs → compiler/GHC/Builtin/WiredIn/Prim.hs - compiler/GHC/Builtin/Types/Literals.hs → compiler/GHC/Builtin/WiredIn/TypeLits.hs - compiler/GHC/Builtin/Types.hs → compiler/GHC/Builtin/WiredIn/Types.hs - compiler/GHC/Builtin/Types.hs-boot → compiler/GHC/Builtin/WiredIn/Types.hs-boot - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/DataCon.hs - compiler/GHC/Core/FVs.hs - compiler/GHC/Core/FamInstEnv.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Multiplicity.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Core/Opt/CprAnal.hs - compiler/GHC/Core/Opt/DmdAnal.hs - compiler/GHC/Core/Opt/LiberateCase.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/SetLevels.hs - compiler/GHC/Core/Opt/Simplify/Env.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/Opt/SpecConstr.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Opt/WorkWrap/Utils.hs - compiler/GHC/Core/Ppr.hs - compiler/GHC/Core/Predicate.hs - compiler/GHC/Core/Rules.hs - compiler/GHC/Core/SimpleOpt.hs - compiler/GHC/Core/Subst.hs - compiler/GHC/Core/TyCo/FVs.hs - compiler/GHC/Core/TyCo/Rep.hs - compiler/GHC/Core/TyCon.hs - compiler/GHC/Core/Type.hs - compiler/GHC/Core/Unfold.hs - compiler/GHC/Core/Unify.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/CoreToIface.hs - compiler/GHC/CoreToStg.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Driver/Backpack.hs - compiler/GHC/Driver/Config/Tidy.hs - compiler/GHC/Driver/Downsweep.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Env.hs - compiler/GHC/Driver/Env/KnotVars.hs - compiler/GHC/Driver/Env/Types.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main/Hsc.hs - compiler/GHC/Driver/Main/Passes.hs - compiler/GHC/Driver/Pipeline.hs - compiler/GHC/Driver/Pipeline/Execute.hs - compiler/GHC/Driver/Plugins.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Pat.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/Hs/Type.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore.hs - compiler/GHC/HsToCore/Arrows.hs - compiler/GHC/HsToCore/Binds.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Foreign/C.hs - compiler/GHC/HsToCore/Foreign/Call.hs - compiler/GHC/HsToCore/Foreign/JavaScript.hs - compiler/GHC/HsToCore/Foreign/Utils.hs - compiler/GHC/HsToCore/Foreign/Wasm.hs - compiler/GHC/HsToCore/ListComp.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/HsToCore/Pmc/Check.hs - compiler/GHC/HsToCore/Pmc/Desugar.hs - compiler/GHC/HsToCore/Pmc/Ppr.hs - compiler/GHC/HsToCore/Pmc/Solver.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Types.hs - compiler/GHC/HsToCore/Utils.hs - compiler/GHC/Iface/Binary.hs - compiler/GHC/Iface/Env.hs - − compiler/GHC/Iface/Env.hs-boot - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Iface/Errors/Types.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Iface/Make.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Tidy.hs - compiler/GHC/Iface/Type.hs - compiler/GHC/IfaceToCore.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Annotation.hs - compiler/GHC/Parser/Errors/Ppr.hs - compiler/GHC/Parser/Header.hs - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Plugins.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/Unbound.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Context.hs - compiler/GHC/Runtime/Debugger.hs - compiler/GHC/Runtime/Eval.hs - compiler/GHC/Runtime/Heap/Inspect.hs - compiler/GHC/Runtime/Interpreter.hs - compiler/GHC/Runtime/Loader.hs - compiler/GHC/Stg/BcPrep.hs - compiler/GHC/Stg/Unarise.hs - compiler/GHC/StgToByteCode.hs - compiler/GHC/StgToCmm/Bind.hs - compiler/GHC/StgToCmm/DataCon.hs - compiler/GHC/StgToCmm/Env.hs - compiler/GHC/StgToCmm/Foreign.hs - compiler/GHC/StgToCmm/Lit.hs - compiler/GHC/StgToCmm/Ticky.hs - compiler/GHC/StgToJS/Apply.hs - compiler/GHC/StgToJS/Arg.hs - compiler/GHC/StgToJS/Expr.hs - compiler/GHC/StgToJS/FFI.hs - compiler/GHC/StgToJS/Linker/Utils.hs - compiler/GHC/StgToJS/Utils.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/Tc/Deriv/Functor.hs - compiler/GHC/Tc/Deriv/Generate.hs - compiler/GHC/Tc/Deriv/Generics.hs - compiler/GHC/Tc/Deriv/Infer.hs - compiler/GHC/Tc/Deriv/Utils.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Hole.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Gen/App.hs - compiler/GHC/Tc/Gen/Arrow.hs - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Default.hs - compiler/GHC/Tc/Gen/Export.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Foreign.hs - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Gen/Match.hs - compiler/GHC/Tc/Gen/Pat.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Gen/Splice.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Instance/Typeable.hs - compiler/GHC/Tc/Module.hs - compiler/GHC/Tc/Solver/Default.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/FunDeps.hs - compiler/GHC/Tc/Solver/InertSet.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Rewrite.hs - compiler/GHC/Tc/TyCl.hs - compiler/GHC/Tc/TyCl/Build.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/TyCl/Utils.hs - compiler/GHC/Tc/Types.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/Evidence.hs - compiler/GHC/Tc/Types/LclEnv.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Utils/Backpack.hs - compiler/GHC/Tc/Utils/Concrete.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/Utils/Unify.hs - compiler/GHC/Tc/Validity.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/DefaultEnv.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/Literal.hs - compiler/GHC/Types/Name.hs - compiler/GHC/Types/Name/Cache.hs - compiler/GHC/Types/Name/Ppr.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/RepType.hs - compiler/GHC/Types/TyThing.hs - compiler/GHC/Types/Unique.hs - compiler/GHC/Types/Unique/FM.hs - compiler/GHC/Types/Var.hs - compiler/GHC/Unit.hs - compiler/GHC/Unit/External.hs - compiler/GHC/Unit/Module/Deps.hs - compiler/GHC/Unit/Module/ModSummary.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Unit/Types.hs - compiler/GHC/Utils/Binary.hs - − compiler/GHC/Utils/Binary/Typeable.hs - compiler/Language/Haskell/Syntax/Expr.hs - compiler/ghc.cabal.in - docs/users_guide/separate_compilation.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Monad.hs - libraries/base/base.cabal.in - libraries/base/src/Control/Applicative.hs - libraries/base/src/Control/Concurrent.hs - libraries/base/src/Control/Concurrent/Chan.hs - libraries/base/src/Control/Concurrent/QSem.hs - libraries/base/src/Control/Concurrent/QSemN.hs - libraries/base/src/Data/Array/Byte.hs - libraries/base/src/Data/Bifoldable.hs - libraries/base/src/Data/Bifoldable1.hs - libraries/base/src/Data/Bifunctor.hs - libraries/base/src/Data/Bitraversable.hs - libraries/base/src/Data/Bool.hs - libraries/base/src/Data/Complex.hs - libraries/base/src/Data/Data.hs - libraries/base/src/Data/Enum.hs - libraries/base/src/Data/Fixed.hs - libraries/base/src/Data/Foldable1.hs - libraries/base/src/Data/Functor/Classes.hs - libraries/base/src/Data/Functor/Compose.hs - libraries/base/src/Data/Functor/Contravariant.hs - libraries/base/src/Data/Functor/Product.hs - libraries/base/src/Data/Functor/Sum.hs - libraries/base/src/Data/List.hs - libraries/base/src/Data/List/NonEmpty.hs - libraries/base/src/Data/List/NubOrdSet.hs - libraries/base/src/Data/Semigroup.hs - libraries/base/src/Data/Version.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/ByteOrder.hs - + libraries/base/src/GHC/Essentials.hs - libraries/base/src/GHC/Exts.hs - libraries/base/src/GHC/Fingerprint.hs - libraries/base/src/GHC/RTS/Flags.hs - libraries/base/src/GHC/ResponseFile.hs - libraries/base/src/GHC/Stats.hs - libraries/base/src/GHC/Weak/Finalize.hs - libraries/base/src/Numeric.hs - libraries/base/src/Prelude.hs - libraries/base/src/System/CPUTime/Posix/ClockGetTime.hsc - libraries/base/src/System/CPUTime/Posix/RUsage.hsc - libraries/base/src/System/CPUTime/Unsupported.hs - libraries/base/src/System/Console/GetOpt.hs - libraries/base/src/System/Exit.hs - libraries/base/src/System/IO.hs - libraries/base/src/System/IO/OS.hs - libraries/base/src/System/IO/Unsafe.hs - libraries/base/src/System/Info.hs - libraries/base/src/System/Timeout.hs - libraries/base/src/Text/Printf.hs - libraries/base/src/Text/Read.hs - libraries/base/src/Text/Show/Functions.hs - libraries/binary - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-experimental/src/GHC/Profiling/Eras.hs - libraries/ghc-experimental/src/Prelude/Experimental.hs - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/include/RtsIfaceSymbols.h - libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs - libraries/ghc-internal/src/GHC/Internal/Arr.hs - libraries/ghc-internal/src/GHC/Internal/ArrayArray.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/Backend.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/GMP.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/Backend/Native.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/BigNat.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/BigNat.hs-boot - libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs-boot - libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs - libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs-boot - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/CString.hs - libraries/ghc-internal/src/GHC/Internal/Char.hs - libraries/ghc-internal/src/GHC/Internal/Classes.hs - libraries/ghc-internal/src/GHC/Internal/Classes/IP.hs - libraries/ghc-internal/src/GHC/Internal/Clock.hsc - libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX/Const.hsc - libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs - libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Category.hs - libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Zip.hs - libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Data/Coerce.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs - libraries/ghc-internal/src/GHC/Internal/Data/Either.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Function.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Utils.hs - libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs - libraries/ghc-internal/src/GHC/Internal/Data/List.hs - libraries/ghc-internal/src/GHC/Internal/Data/List/NonEmpty.hs - libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/NonEmpty.hs - 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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/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/7a5b9bbcc8182bb291a428107487912… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7a5b9bbcc8182bb291a428107487912… You're receiving this email because of your account on gitlab.haskell.org.

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