Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 4a45a7da by Matthew Pickering at 2026-04-08T04:37:29-04:00 packaging: correctly propagate build/host/target to bindist configure script At the moment the host and target which we will produce a compiler for is fixed at the initial configure time. Therefore we need to persist the choice made at this time into the installation bindist as well so we look for the right tools, with the right prefixes at install time. In the future, we want to provide a bit more control about what kind of bindist we produce so the logic about what the host/target will have to be written by hadrian rather than persisted by the configure script. In particular with cross compilers we want to either build a normal stage 2 cross bindist or a stage 3 bindist, which creates a bindist which has a native compiler for the target platform. Fixes #21970 Co-authored-by: Sven Tennie - - - - - b0950df6 by Sven Tennie at 2026-04-08T04:37:29-04:00 Cross --host and --target no longer required for cross (#21970) We set sane defaults in the configure script. Thus, these paramenters aren't required any longer. - - - - - fef35216 by Sven Tennie at 2026-04-08T04:37:30-04:00 ci: Define USER_CONF_CC_OPTS_STAGE2 for aarch64/mingw ghc-toolchain doesn't see $CONF_CC_OPTS_STAGE2 when the bindist gets configured. So, the hack to override the compiler gets lost. - - - - - 8dd6f453 by Cheng Shao at 2026-04-08T04:38:11-04:00 ghci: use ShortByteString for LookupSymbol/LookupSymbolInDLL/LookupClosure messages This patch refactors ghci to use `ShortByteString` for `LookupSymbol`/`LookupSymbolInDLL`/`LookupClosure` messages as the first part of #27147. Co-authored-by: Codex - - - - - 371ef200 by Cheng Shao at 2026-04-08T04:38:11-04:00 ghci: use ShortByteString for MkCostCentres message This patch refactors ghci to use `ShortByteString` for `MkCostCentres` messages as a first part of #27147. This also considerably lowers the memory overhead of breakpoints when cost center profiling is enabled. ------------------------- Metric Decrease: interpreter_steplocal ------------------------- Co-authored-by: Codex - - - - - 49ba8026 by Zubin Duggal at 2026-04-08T08:15:11-04:00 hadrian: Don't include the package hash in the haddock directory Since GHC 9.8 and hash_unit_ids, haddock urls have looked like`ghc-9.10.3/doc/html/libraries/base-4.20.2.0-39f9/**/*.html` The inclusion of the hash makes it hard for downstream non-boot packages to properly link to these files, as the hash is not part of a standard cabal substitution. Since we only build one version of each package, we don't need the hash to disambiguate anything, we can just remove it. Fixes #26635 - - - - - 7d5f94a6 by Luite Stegeman at 2026-04-08T08:15:25-04:00 CodeOutput: Fix finalizers on multiple platforms - ELF platforms: emit .fini_array section - Darwin: emit section and teach prettyprinter the section name - wasm32: emit __cxa_atexit - Windows: use -Wl,--whole-archive to prevent dropping finalizer symbols fixes #27072 - - - - - 89b907e1 by Teo Camarasu at 2026-04-08T08:15:27-04:00 doc: improve eventlog-flush-interval flag documentation We mention the performance cost and how this flag can be turned off. Resolves #27056 - - - - - e0ed4589 by Teo Camarasu at 2026-04-08T08:15:27-04:00 docs/user_guide: fix typo - - - - - 17174ed0 by Simon Jakobi at 2026-04-08T08:15:29-04:00 Fix -dsuppress-uniques for free variables in demand signatures Before: Str=b{sXyZ->S} With this patch: Str=b{S} T13143.stderr is updated accordingly. Fixes #27106. - - - - - 5207fe46 by Simon Jakobi at 2026-04-08T08:15:30-04:00 Use upsert for non-deleting map updates Some compiler functions were using `alter`, despite never removing any entries: they only update an existing entry or insert a new one. These functions are converted to using `upsert`: alter :: (Maybe a -> Maybe a) -> Key -> Map a -> Map a upsert :: (Maybe a -> a) -> Key -> Map a -> Map a `upsert` variants are also added to APIs of the various Word64Map wrapper types. The precedent for this `upsert` operation is in the containers library: see https://github.com/haskell/containers/pull/1145 Metrics: compile_time/bytes allocated ------------------------------------- geo. mean: -0.1% minimum: -0.5% maximum: +0.0% Resolves #27140. - - - - - 64 changed files: - .gitlab/ci.sh - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - compiler/GHC/ByteCode/Breakpoints.hs - compiler/GHC/Cmm/CommonBlockElim.hs - compiler/GHC/Cmm/Dataflow/Graph.hs - compiler/GHC/Cmm/Dataflow/Label.hs - compiler/GHC/CmmToAsm/CFG.hs - compiler/GHC/CmmToAsm/Ppr.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/RoughMap.hs - compiler/GHC/Core/TyCon/Env.hs - compiler/GHC/Core/Unify.hs - compiler/GHC/Data/FastString/Env.hs - compiler/GHC/Data/Word64Map/Internal.hs - compiler/GHC/Data/Word64Map/Lazy.hs - compiler/GHC/Data/Word64Map/Strict.hs - compiler/GHC/Data/Word64Map/Strict/Internal.hs - compiler/GHC/Driver/CodeOutput.hs - compiler/GHC/Driver/Plugins.hs - compiler/GHC/HsToCore/Breakpoints.hs - compiler/GHC/Linker/Executable.hs - compiler/GHC/Linker/Loader.hs - compiler/GHC/Runtime/Interpreter.hs - compiler/GHC/Tc/Solver/Types.hs - compiler/GHC/Types/Demand.hs - compiler/GHC/Types/ForeignStubs.hs - compiler/GHC/Types/Name/Env.hs - compiler/GHC/Types/Name/Occurrence.hs - compiler/GHC/Types/Unique/DFM.hs - compiler/GHC/Types/Unique/FM.hs - compiler/GHC/Types/Var/Env.hs - compiler/GHC/Wasm/ControlFlow/FromCmm.hs - configure.ac - distrib/configure.ac.in - docs/users_guide/runtime_control.rst - hadrian/bindist/Makefile - hadrian/cfg/system.config.in - hadrian/src/CommandLine.hs - hadrian/src/Context.hs - hadrian/src/Oracles/Setting.hs - hadrian/src/Rules/Generate.hs - hadrian/src/Settings/Builders/Cabal.hs - hadrian/src/Settings/Default.hs - libraries/ghci/GHCi/Message.hs - libraries/ghci/GHCi/ObjLink.hs - libraries/ghci/GHCi/Run.hs - m4/fptools_set_platform_vars.m4 - m4/ghc_toolchain.m4 - + testsuite/tests/codeGen/should_run/T27072.hs - + testsuite/tests/codeGen/should_run/T27072.stdout - + testsuite/tests/codeGen/should_run/T27072_c.c - + testsuite/tests/codeGen/should_run/T27072w.hs - + testsuite/tests/codeGen/should_run/T27072w.stdout - + testsuite/tests/codeGen/should_run/T27072w_c.c - testsuite/tests/codeGen/should_run/all.T - testsuite/tests/dmdanal/should_compile/T13143.stderr - + testsuite/tests/dmdanal/should_compile/T27106.hs - + testsuite/tests/dmdanal/should_compile/T27106.stderr - testsuite/tests/dmdanal/should_compile/all.T - testsuite/tests/driver/linkwhole/Main.hs - testsuite/tests/ghci/should_run/T18064.script - testsuite/tests/rts/KeepCafsMain.hs - utils/jsffi/dyld.mjs The diff was not included because it is too large. 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