Simon Peyton Jones pushed to branch wip/T26369 at Glasgow Haskell Compiler / GHC Commits: 6c78de2d by Sylvain Henry at 2025-09-01T08:46:19-04:00 Driver: substitute virtual Prim module in --make mode too When we build ghc-internal with --make (e.g. with cabal-install), we need to be careful to substitute the virtual interface file for GHC.Internal.Prim: - after code generation (we generate code for an empty module, so we get an empty interface) - when we try to reload its .hi file - - - - - 26e0db16 by fendor at 2025-09-01T08:47:01-04:00 Expose Stack Annotation frames in IPE backtraces by default When decoding the Haskell-native call stack and displaying the IPE information for the stack frames, we print the `StackAnnotation` of the `AnnFrame` by default. This means, when an exception is thrown, any intermediate stack annotations will be displayed in the `IPE Backtrace`. Example backtrace: ``` Exception: ghc-internal:GHC.Internal.Exception.ErrorCall: Oh no! IPE backtrace: annotateCallStackIO, called at app/Main.hs:48:10 in backtrace-0.1.0.0-inplace-server:Main annotateCallStackIO, called at app/Main.hs:46:13 in backtrace-0.1.0.0-inplace-server:Main Main.handler (app/Main.hs:(46,1)-(49,30)) Main.liftIO (src/Servant/Server/Internal/Handler.hs:30:36-42) Servant.Server.Internal.Delayed.runHandler' (src/Servant/Server/Internal/Handler.hs:27:31-41) Control.Monad.Trans.Resource.runResourceT (./Control/Monad/Trans/Resource.hs:(192,14)-(197,18)) Network.Wai.Handler.Warp.HTTP1.processRequest (./Network/Wai/Handler/Warp/HTTP1.hs:195:20-22) Network.Wai.Handler.Warp.HTTP1.processRequest (./Network/Wai/Handler/Warp/HTTP1.hs:(195,5)-(203,31)) Network.Wai.Handler.Warp.HTTP1.http1server.loop (./Network/Wai/Handler/Warp/HTTP1.hs:(141,9)-(157,42)) HasCallStack backtrace: error, called at app/Main.hs:48:32 in backtrace-0.1.0.0-inplace-server:Main ``` The first two entries have been added by `annotateCallStackIO`, defined in `annotateCallStackIO`. - - - - - a1567efd by Sylvain Henry at 2025-09-01T23:01:35-04:00 RTS: rely less on Hadrian for flag setting (#25843) Hadrian used to pass -Dfoo command-line flags directly to build the rts. We can replace most of these flags with CPP based on cabal flags. It makes building boot libraries with cabal-install simpler (cf #25843). - - - - - ca5b0283 by Sergey Vinokurov at 2025-09-01T23:02:23-04:00 Remove unnecessary irrefutable patterns from Bifunctor instances for tuples Implementation of https://github.com/haskell/core-libraries-committee/issues/339 Metric Decrease: mhu-perf - - - - - 2da84b7a by sheaf at 2025-09-01T23:03:23-04:00 Only use active rules when simplifying rule RHSs When we are simplifying the RHS of a rule, we make sure to only apply rewrites from rules that are active throughout the original rule's range of active phases. For example, if a rule is always active, we only fire rules that are themselves always active when simplifying the RHS. Ditto for inline activations. This is achieved by setting the simplifier phase to a range of phases, using the new SimplPhaseRange constructor. Then: 1. When simplifying the RHS of a rule, or of a stable unfolding, we set the simplifier phase to a range of phases, computed from the activation of the RULE/unfolding activation, using the function 'phaseFromActivation'. The details are explained in Note [What is active in the RHS of a RULE?] in GHC.Core.Opt.Simplify.Utils. 2. The activation check for other rules and inlinings is then: does the activation of the other rule/inlining cover the whole phase range set in sm_phase? This continues to use the 'isActive' function, which now accounts for phase ranges. On the way, this commit also moves the exact-print SourceText annotation from the Activation datatype to the ActivationAnn type. This keeps the main Activation datatype free of any extra cruft. Fixes #26323 - - - - - 67090c8b by Simon Peyton Jones at 2025-09-02T17:43:53+01:00 Refactor ForAllCo - - - - - 6339ce67 by Simon Peyton Jones at 2025-09-02T17:43:53+01:00 Wibble - - - - - ef45e941 by Simon Peyton Jones at 2025-09-02T17:43:53+01:00 Wibbles - - - - - 74 changed files: - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/Coercion.hs-boot - compiler/GHC/Core/Coercion/Opt.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/Pipeline/Types.hs - compiler/GHC/Core/Opt/Simplify/Env.hs - compiler/GHC/Core/Opt/Simplify/Inline.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/Opt/Simplify/Utils.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Opt/WorkWrap.hs - compiler/GHC/Core/Reduction.hs - compiler/GHC/Core/Rules.hs - compiler/GHC/Core/TyCo/FVs.hs - compiler/GHC/Core/TyCo/Rep.hs - compiler/GHC/Core/TyCo/Subst.hs - compiler/GHC/Core/TyCo/Tidy.hs - compiler/GHC/Core/Type.hs - compiler/GHC/Core/Unify.hs - compiler/GHC/CoreToIface.hs - compiler/GHC/Driver/Config/Core/Lint.hs - compiler/GHC/Driver/Config/Core/Opt/Simplify.hs - compiler/GHC/Driver/Downsweep.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Driver/Make.hs - compiler/GHC/Driver/Pipeline.hs - compiler/GHC/Hs/Binds.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Iface/Recomp.hs - compiler/GHC/Iface/Rename.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Iface/Type.hs - compiler/GHC/IfaceToCore.hs - compiler/GHC/Parser.y - compiler/GHC/Tc/Deriv/Generics.hs - compiler/GHC/Tc/TyCl/Utils.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/Tc/Utils/TcType.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/Basic.hs - compiler/GHC/Types/Id/Make.hs - compiler/GHC/Utils/Binary.hs - hadrian/src/Settings/Packages.hs - hie.yaml - libraries/base/changelog.md - libraries/base/src/Data/Bifunctor.hs - libraries/ghc-experimental/src/GHC/Stack/Annotation/Experimental.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs - + libraries/ghc-internal/src/GHC/Internal/Stack/Annotation.hs - libraries/ghc-internal/src/GHC/Internal/Stack/Decode.hs - libraries/ghc-internal/tests/stack-annotation/ann_frame002.stdout - libraries/ghc-internal/tests/stack-annotation/ann_frame004.stdout - rts/RtsMessages.c - rts/RtsUtils.c - rts/Trace.c - + testsuite/tests/driver/make-prim/GHC/Internal/Prim.hs - + testsuite/tests/driver/make-prim/Makefile - + testsuite/tests/driver/make-prim/Test.hs - + testsuite/tests/driver/make-prim/Test2.hs - + testsuite/tests/driver/make-prim/all.T - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/perf/compiler/T4007.stdout - testsuite/tests/simplCore/should_compile/T15056.stderr - testsuite/tests/simplCore/should_compile/T15445.stderr - + testsuite/tests/simplCore/should_compile/T26323b.hs - testsuite/tests/simplCore/should_compile/all.T - + testsuite/tests/simplCore/should_run/T26323.hs - + testsuite/tests/simplCore/should_run/T26323.stdout - testsuite/tests/simplCore/should_run/all.T - utils/check-exact/ExactPrint.hs The diff was not included because it is too large. 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