Hannes Siebenhandl pushed to branch wip/fendor/hpc-bc-support at Glasgow Haskell Compiler / GHC Commits: b135a87d by Zubin Duggal at 2026-04-09T19:36:50+05:30 Bump directory submodule to 1.3.11.0 (unreleased) - - - - - 3a291d07 by Zubin Duggal at 2026-04-09T19:36:50+05:30 Bump file-io submodule to 0.2.0 - - - - - e0ab606d by Zubin Duggal at 2026-04-10T18:40:20+05:30 Release notes for GHC 10.0 - - - - - e08b9b34 by Zubin Duggal at 2026-04-10T18:40:20+05:30 Bump ghc-prim version to 0.14.0 - - - - - a92aac6e by Zubin Duggal at 2026-04-10T18:40:20+05:30 Bump template-haskell to 2.25.0.0; update submodule exceptions for TH 2.25 - - - - - f254d9e8 by Zubin Duggal at 2026-04-10T18:40:20+05:30 Bump GHC version to 10.0 - - - - - 6ce0368a by Zubin Duggal at 2026-04-10T18:40:28+05:30 Bump base to 4.23.0.0; update submodules for base 4.24 upper bound - - - - - 702fb8a5 by Zubin Duggal at 2026-04-10T18:40:28+05:30 Bump GHC version to 10.1; update submodules template-haskell-lift and template-haskell-quasiquoter for ghc-internal 10.200 - - - - - 75df1ca4 by Zubin Duggal at 2026-04-10T18:40:28+05:30 Use changelog.d for release notes (#26002) GHC now uses a fragment-based changelog workflow using a custom script adapted from https://codeberg.org/fgaz/changelog-d. Contributors add a file in changelog.d/ for each user-facing change. At release time, these are assembled into release notes for sphinx (in RST) format, using the tool. New hadrian `changelog` target to generate changelogs CI job to validate changelog entries for MRs unless skipped with ~"no-changelog" label Teach sphinx about ghc-mr: extlink to link to MRs Remove `ghc-package-list` from sphinx, and implement it in changelog-d instead (Fixes #26476). (cherry picked from commit 989c07249978f418dfde1353abfad453f024d61a) - - - - - 585d7450 by Luite Stegeman at 2026-04-11T02:17:13-04:00 tc: discard warnings in tcUserStmt Plan C We typecheck let_stmt twice, but we don't want the warnings twice! see #26233 - - - - - 2df604e9 by Sylvain Henry at 2026-04-11T02:19:30-04:00 Introduce TargetInt to represent target's Int (#15973) GHC was using host 'Int' in several places to represent values that live in the target machine's 'Int' type. This is silently wrong when cross-compiling from a 32-bit host to a 64-bit target: the host Int is 32 bits while the target Int is 64 bits. See Note [TargetInt] in GHC.Platform. Also used the opportunity to make DynTag = Word8. Fixes #15973 Co-Authored-By: Claude Sonnet 4.6 - - - - - 08c62e8e by fendor at 2026-04-13T09:41:33+02:00 Expose startupHpc as an rts symbol - - - - - 5590f1d0 by fendor at 2026-04-13T09:41:33+02:00 Make HPC work with bytecode interpreter Add support to generate .tix files from bytecode objects and the bytecode interpreter. Conceptually, we insert HPC ticks into the bytecode similar to how we insert breakpoints. HPC and breakpoints do not share the same tick array but we use a separate tick-array for hpc/breakpoint ticks during bytecode generation. We teach the bytecode interpreter to handle hpc ticks. The implementation is quite trivial, simply increment the counter in the global hpc_ticks array for the respective module. This hpc_ticks array is generated as part of the `CStub`, so we can rely on it existing. A tricky bit is "registering" a bytecode object for HPC instrumentation. In the compiled case, this is achieved via CStub and initializer/finalizers `.init` sections which are called when the executable is run. After the initializers have been invoked, which is before `hs_init_ghc`, we then call `startup_hpc` in `hs_init_ghc` iff any modules were "registered" for hpc instrumentation via `hs_hpc_module`. Since bytecode objects are loaded after starting up GHCi, this workflow doesn't work for supporting `hpc` and the `hpc` run-time is never started, even if a module is added for instrumentation. We fix this issue by employing the same technique as is for `SptEntry`s: * We introduce a new field to `CompiledByteCode`, called `ByteCodeHpcInfo` which contains enough information to call `hs_hpc_module`, allowing us to register the module for `hpc` instrumentation`. * After registering the module, we unconditionally call `startupHpc`, to make sure the .tix file is written. Calling `startupHpc` multiple times is safe. Calling `hs_hpc_module` multiple times for the same module is also safe. If we didn't register the hpc module in this way, evaluating a bytecode object instrumented with `-fhpc` without registering it in the `hpc` run-time will simply not generate any `.tix` files for this bytecode object. However, this shouldn't happen if everything is set up correctly. Closes #27036 - - - - - 24559f0a by fendor at 2026-04-13T09:41:33+02:00 Use common module name printing function - - - - - 7883e5f1 by fendor at 2026-04-13T09:47:36+02:00 fixup! Make HPC work with bytecode interpreter - - - - - 140 changed files: - .gitlab-ci.yml - .gitlab/issue_templates/release_tracking.md - .gitlab/merge_request_templates/Default.md - + changelog.d/bytecode-interpreter-hpc-support - + changelog.d/changelog-entries - + changelog.d/config - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/ByteCode/Binary.hs - compiler/GHC/ByteCode/InfoTable.hs - compiler/GHC/ByteCode/Instr.hs - compiler/GHC/ByteCode/Types.hs - compiler/GHC/Cmm/LayoutStack.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/Driver/Backend.hs - compiler/GHC/Driver/CodeOutput.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/HsToCore.hs - compiler/GHC/HsToCore/Coverage.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Tidy.hs - compiler/GHC/Linker/Loader.hs - compiler/GHC/Platform.hs - compiler/GHC/Platform/Tag.hs - compiler/GHC/Runtime/Interpreter.hs - compiler/GHC/StgToByteCode.hs - compiler/GHC/StgToCmm.hs - compiler/GHC/StgToCmm/Bind.hs - compiler/GHC/StgToCmm/Closure.hs - compiler/GHC/StgToCmm/Env.hs - compiler/GHC/StgToCmm/Expr.hs - compiler/GHC/StgToCmm/Foreign.hs - compiler/GHC/StgToCmm/Heap.hs - compiler/GHC/StgToCmm/InfoTableProv.hs - compiler/GHC/StgToCmm/Layout.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToCmm/Prof.hs - compiler/GHC/StgToCmm/Ticky.hs - compiler/GHC/StgToCmm/Utils.hs - compiler/GHC/Tc/Module.hs - compiler/GHC/Types/HpcInfo.hs - compiler/GHC/Unit/Module/ModGuts.hs - compiler/ghc.cabal.in - configure.ac - − docs/users_guide/10.0.1-notes.rst - + docs/users_guide/10.2.1-notes.rst - − docs/users_guide/9.16.1-notes.rst - docs/users_guide/conf.py - docs/users_guide/ghc_config.py.in - − docs/users_guide/ghc_packages.py - docs/users_guide/release-notes.rst - ghc/ghc-bin.cabal.in - hadrian/hadrian.cabal - hadrian/src/CommandLine.hs - hadrian/src/Main.hs - hadrian/src/Packages.hs - + hadrian/src/Rules/Changelog.hs - hadrian/src/Rules/Documentation.hs - hadrian/src/Rules/Test.hs - hadrian/src/Settings/Default.hs - libraries/array - libraries/base/base.cabal.in - libraries/deepseq - libraries/directory - libraries/exceptions - libraries/file-io - libraries/filepath - libraries/ghc-boot-th/ghc-boot-th.cabal.in - libraries/ghc-boot/ghc-boot.cabal.in - libraries/ghc-compact/ghc-compact.cabal - libraries/ghc-experimental/ghc-experimental.cabal.in - libraries/ghc-prim/changelog.md - libraries/ghc-prim/ghc-prim.cabal - + libraries/ghci/GHCi/Coverage.hs - libraries/ghci/GHCi/Message.hs - libraries/ghci/GHCi/Run.hs - libraries/ghci/ghci.cabal.in - libraries/haskeline - libraries/hpc - libraries/os-string - libraries/parsec - libraries/process - libraries/semaphore-compat - libraries/stm - libraries/template-haskell-lift - libraries/template-haskell-quasiquoter - libraries/template-haskell/template-haskell.cabal.in - libraries/terminfo - libraries/unix - m4/fp_setup_project_version.m4 - m4/fptools_ghc_version.m4 - rts/Disassembler.c - rts/Hpc.c - rts/Interpreter.c - rts/RtsSymbols.c - rts/include/rts/Bytecodes.h - testsuite/mk/boilerplate.mk - + testsuite/tests/ghci/scripts/T26233.script - + testsuite/tests/ghci/scripts/T26233.stderr - + testsuite/tests/ghci/scripts/T26233.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/hpc/Makefile - testsuite/tests/hpc/T17073.stdout → testsuite/tests/hpc/T17073a.stdout - + testsuite/tests/hpc/T17073b.stdout - testsuite/tests/hpc/T20568.stdout → testsuite/tests/hpc/T20568a.stdout - + testsuite/tests/hpc/T20568b.stdout - testsuite/tests/hpc/all.T - testsuite/tests/hpc/fork/Makefile - testsuite/tests/hpc/function/Makefile - testsuite/tests/hpc/function/test.T - + testsuite/tests/hpc/function/tough1.stderr - + testsuite/tests/hpc/function/tough1.stdout - testsuite/tests/hpc/function2/test.T - + testsuite/tests/hpc/function2/tough3.script - + testsuite/tests/hpc/ghc_ghci/BytecodeMain.hs - testsuite/tests/hpc/ghc_ghci/Makefile - + testsuite/tests/hpc/ghc_ghci/hpc_ghc_ghci_bytecode.stdout - testsuite/tests/hpc/ghc_ghci/test.T - testsuite/tests/hpc/hpcrun.pl - testsuite/tests/hpc/simple/Makefile - + testsuite/tests/hpc/simple/hpc002.hs - + testsuite/tests/hpc/simple/hpc002.stdout - + testsuite/tests/hpc/simple/hpc003.hs - + testsuite/tests/hpc/simple/hpc003.script - + testsuite/tests/hpc/simple/hpc003.stderr - + testsuite/tests/hpc/simple/hpc003.stdout - testsuite/tests/hpc/simple/test.T - testsuite/tests/linters/Makefile - testsuite/tests/linters/all.T - + testsuite/tests/linters/changelog-d.stdout - + utils/changelog-d/ChangelogD.hs - + utils/changelog-d/LICENSE - + utils/changelog-d/README.md - + utils/changelog-d/changelog-d.cabal - utils/haddock/haddock-api/haddock-api.cabal - utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs - utils/haddock/haddock-library/haddock-library.cabal - utils/haddock/haddock-test/haddock-test.cabal - utils/haddock/haddock.cabal - utils/hsc2hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/75871f1339c57d8a76a106a7e01fea9... -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/75871f1339c57d8a76a106a7e01fea9... You're receiving this email because of your account on gitlab.haskell.org.