Simon Peyton Jones pushed to branch wip/T23109 at Glasgow Haskell Compiler / GHC Commits: 4b748a99 by Teo Camarasu at 2025-06-24T15:31:07-04:00 template-haskell: improve changelog stable -> more stable, just to clarify that this interface isn't fully stable. errornously -> mistakenly: I typod this and also let's go for a simpler word - - - - - e358e477 by Sylvain Henry at 2025-06-24T15:31:58-04:00 Bump stack resolver to use GHC 9.6.7 Cf #26139 - - - - - 4bf5eb63 by fendor at 2025-06-25T17:05:43-04:00 Teach `:reload` about multiple home units `:reload` needs to lookup the `ModuleName` and must not assume the given `ModuleName` is in the current `HomeUnit`. We add a new utility function which allows us to find a `HomeUnitModule` instead of a `Module`. Further, we introduce the `GhciCommandError` type which can be used to abort the execution of a GHCi command. This error is caught and printed in a human readable fashion. - - - - - b3d97bb3 by fendor at 2025-06-25T17:06:25-04:00 Implement `-fno-load-initial-targets` flag We add the new flag `-fno-load-initial-targets` which doesn't load all `Target`s immediately but only computes the module graph for all `Target`s. The user can then decide to load modules from that module graph using the syntax: ghci> :reload <Mod> This will load everything in the module graph up to `Mod`. The user can return to the initial state by using the builtin target `none` to unload all modules. ghci> :reload none Is in principle identical to starting a new session with the `-fno-load-initial-targets` flag. The `-fno-load-initial-targets` flag allows for faster startup time of GHCi when a user has lots of `Target`s. We additionally extend the `:reload` command to accept multiple `ModuleName`s. For example: ghci> :reload <Mod1> <Mod2> Loads all modules up to the modules `Mod1` and `Mod2`. - - - - - 49f44e52 by Teo Camarasu at 2025-06-26T04:19:51-04:00 Expose ghc-internal unit id through the settings file This in combination with the unit id of the compiler library allows cabal to know of the two unit ids that should not be reinstalled (in specific circumstances) as: - when using plugins, we want to link against exactly the compiler unit id - when using TemplateHaskell we want to link against exactly the package that contains the TemplateHaskell interfaces, which is `ghc-internal` See: https://github.com/haskell/cabal/issues/10087 Resolves #25282 - - - - - 499c4efe by Bryan Richter at 2025-06-26T04:20:33-04:00 CI: Fix and clean up capture of timings * Fixes the typo that caused 'cat ci-timings' to report "no such file or directory" * Gave ci_timings.txt a file extension so it may play better with other systems * Fixed the use of time_it so all times are recorded * Fixed time_it to print name along with timing - - - - - 86c90c9e by Bryan Richter at 2025-06-26T04:20:33-04:00 CI: Update collapsible section usage The syntax apparently changed at some point. - - - - - 04308ee4 by Bryan Richter at 2025-06-26T04:20:33-04:00 CI: Add more collapsible sections - - - - - 43b606bb by Florian Ragwitz at 2025-06-27T16:31:26-04:00 Tick uses of wildcard/pun field binds as if using the record selector function Fixes #17834. See Note [Record-selector ticks] for additional reasoning behind this as well as an overview of the implementation details and future improvements. - - - - - d4952549 by Ben Gamari at 2025-06-27T16:32:08-04:00 testsuite/caller-cc: Make CallerCc[123] less sensitive These were previously sensitive to irrelevant changes in program structure. To avoid this we filter out all by lines emitted by the -fcaller-cc from the profile. - - - - - 173fa540 by Simon Peyton Jones at 2025-06-28T15:25:10+01:00 Make injecting implicit bindings into its own pass Previously we were injecting "impliicit bindings" (data constructor worker and wrappers etc) - both at the end of CoreTidy, - and at the start of CorePrep This is unpleasant and confusing. This patch puts it it its own pass, addImplicitBinds, which runs between the two. The function `GHC.CoreToStg.AddImplicitBinds.addImplicitBinds` now takes /all/ TyCons, not just the ones for algebraic data types. That change ripples through to - corePrepPgm - doCodeGen - byteCodeGen All take [TyCon] which includes all TyCons - - - - - a2d3dde8 by Simon Peyton Jones at 2025-06-28T15:25:10+01:00 Implement unary classes The big change is described exhaustively in Note [Unary class magic] in GHC.Core.TyCon Other changes * We never unbox class dictionaries in worker/wrapper. This has been true for some time now, but the logic is now centralised in functions in GHC.Core.Opt.WorkWrap.Utils, namely `canUnboxTyCon`, and `canUnboxArg` See Note [Do not unbox class dictionaries] in GHC.Core.Opt.WorkWrap.Utils. * Refactored the `notWorthFloating` logic in GHc.Core.Opt.SetLevels. I can't remember if I actually changed any behaviour here, but if so it's only in a corner cases. * Fixed a bug in `GHC.Core.TyCon.isEnumerationTyCon`, which was wrongly returning True for (##). * Remove redundant Role argument to `liftCoSubstWithEx`. It was always Representational. * I refactored evidence generation in the constraint solver: * Made GHC.Tc.Types.Evidence contain better abstactions for evidence generation. * I deleted the file `GHC.Tc.Types.EvTerm` and merged its (small) contents elsewhere. It wasn't paying its way. * Made evidence for implicit parameters go via a proper abstraction. Smaller things * Rename `isDataTyCon` to `isBoxedDataTyCon`. * GHC.Core.Corecion.liftCoSubstWithEx was only called with Representational role, so I baked that into the function and removed the argument. * Get rid of `GHC.Core.TyCon.tyConSingleAlgDataCon_maybe` in favour of calling `not isNewTyCon` at the call sites; more explicit. * Refatored `GHC.Core.TyCon.isInjectiveTyCon`; but I don't think I changed its behaviour * Moved `decomposeIPPred` to GHC.Core.Predicate - - - - - 50fa8426 by Simon Peyton Jones at 2025-06-28T15:32:48+01:00 Renaming around predicate types .. we were (as it turned out) abstracting over type-class selectors in SPECIALISATION rules! - - - - - 57898657 by Simon Peyton Jones at 2025-06-28T15:32:48+01:00 Small hacky fix to specUnfolding ...just using mkApps instead of mkCoreApps (This part is likely to change again in a future commit.) - - - - - 16b0bd0c by Simon Peyton Jones at 2025-06-28T15:32:48+01:00 Slight improvement to pre/postInlineUnconditionally Avoids an extra simplifier iteration - - - - - 9589a3a6 by Simon Peyton Jones at 2025-06-28T15:32:48+01:00 Accept GHCi debugger output change @alt-romes says this is fine - - - - - 159 changed files: - .gitlab-ci.yml - .gitlab/ci.sh - .gitlab/common.sh - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - compiler/GHC/Builtin/Types.hs - compiler/GHC/ByteCode/InfoTable.hs - compiler/GHC/Core/Class.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/DataCon.hs - compiler/GHC/Core/FamInstEnv.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/CprAnal.hs - compiler/GHC/Core/Opt/DmdAnal.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/SetLevels.hs - compiler/GHC/Core/Opt/Simplify/Utils.hs - compiler/GHC/Core/Opt/WorkWrap/Utils.hs - compiler/GHC/Core/Predicate.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/Unfold/Make.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/CoreToStg.hs - + compiler/GHC/CoreToStg/AddImplicitBinds.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Driver/Make.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/HsToCore/Binds.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Foreign/Call.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Decl.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Tidy.hs - compiler/GHC/IfaceToCore.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/StgToByteCode.hs - compiler/GHC/StgToCmm.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Instance/Family.hs - compiler/GHC/Tc/Solver.hs - compiler/GHC/Tc/Solver/Default.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/Equality.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Rewrite.hs - compiler/GHC/Tc/Solver/Solve.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/EvTerm.hs - compiler/GHC/Tc/Types/Evidence.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/Tc/Utils/TcType.hs - compiler/GHC/Types/Demand.hs - compiler/GHC/Types/Id.hs - compiler/GHC/Types/Id/Make.hs - compiler/GHC/Types/RepType.hs - compiler/GHC/Types/TyThing.hs - compiler/GHC/Types/Var.hs - compiler/GHC/Unit/Module/Graph.hs - compiler/Setup.hs - compiler/ghc.cabal.in - docs/users_guide/9.14.1-notes.rst - docs/users_guide/ghci.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Exception.hs - ghc/GHCi/UI/Print.hs - hadrian/src/Rules/Generate.hs - hadrian/stack.yaml - hadrian/stack.yaml.lock - libraries/template-haskell/changelog.md - testsuite/tests/core-to-stg/T24124.stderr - testsuite/tests/deSugar/should_compile/T2431.stderr - testsuite/tests/dmdanal/should_compile/T16029.stdout - testsuite/tests/dmdanal/sigs/T21119.stderr - testsuite/tests/dmdanal/sigs/T21888.stderr - testsuite/tests/ghc-e/should_fail/T18441fail5.stderr - testsuite/tests/ghci.debugger/scripts/break011.stdout - testsuite/tests/ghci.debugger/scripts/break024.stdout - testsuite/tests/ghci/prog-mhu003/prog-mhu003.stderr - testsuite/tests/ghci/prog-mhu004/prog-mhu004a.stderr - + testsuite/tests/ghci/prog-mhu005/Makefile - + testsuite/tests/ghci/prog-mhu005/a/A.hs - + testsuite/tests/ghci/prog-mhu005/all.T - + testsuite/tests/ghci/prog-mhu005/b/B.hs - + testsuite/tests/ghci/prog-mhu005/prog-mhu005a.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005a.stderr - + testsuite/tests/ghci/prog-mhu005/prog-mhu005a.stdout - + testsuite/tests/ghci/prog-mhu005/unitA - + testsuite/tests/ghci/prog-mhu005/unitB - + testsuite/tests/ghci/prog021/A.hs - + testsuite/tests/ghci/prog021/B.hs - + testsuite/tests/ghci/prog021/Makefile - + testsuite/tests/ghci/prog021/all.T - + testsuite/tests/ghci/prog021/prog021a.script - + testsuite/tests/ghci/prog021/prog021a.stderr - + testsuite/tests/ghci/prog021/prog021a.stdout - + testsuite/tests/ghci/prog021/prog021b.script - + testsuite/tests/ghci/prog021/prog021b.stderr - + testsuite/tests/ghci/prog021/prog021b.stdout - + testsuite/tests/ghci/prog022/A.hs - + testsuite/tests/ghci/prog022/B.hs - + testsuite/tests/ghci/prog022/Makefile - + testsuite/tests/ghci/prog022/all.T - + testsuite/tests/ghci/prog022/ghci.prog022a.script - + testsuite/tests/ghci/prog022/ghci.prog022a.stderr - + testsuite/tests/ghci/prog022/ghci.prog022a.stdout - + testsuite/tests/ghci/prog022/ghci.prog022b.script - + testsuite/tests/ghci/prog022/ghci.prog022b.stderr - + testsuite/tests/ghci/prog022/ghci.prog022b.stdout - testsuite/tests/ghci/scripts/ghci021.stderr - + testsuite/tests/hpc/recsel/Makefile - + testsuite/tests/hpc/recsel/recsel.hs - + testsuite/tests/hpc/recsel/recsel.stdout - + testsuite/tests/hpc/recsel/test.T - testsuite/tests/indexed-types/should_compile/T2238.hs - testsuite/tests/numeric/should_compile/T15547.stderr - testsuite/tests/numeric/should_compile/T23907.stderr - 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testsuite/tests/typecheck/should_compile/T12763.stderr - testsuite/tests/typecheck/should_compile/T14774.stdout - testsuite/tests/typecheck/should_compile/T18406b.stderr - testsuite/tests/typecheck/should_compile/T18529.stderr - testsuite/tests/typecheck/should_compile/all.T - testsuite/tests/unboxedsums/unpack_sums_7.stdout - testsuite/tests/wasm/should_run/control-flow/LoadCmmGroup.hs - testsuite/tests/wasm/should_run/control-flow/RunWasm.hs The diff was not included because it is too large. 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