Matthew Pickering pushed to branch wip/bytecode-library-combined at Glasgow Haskell Compiler / GHC Commits: 6ce4383e by Matthew Pickering at 2025-11-26T16:07:22+00:00 Add support for building bytecode libraries A bytecode library is a collection of bytecode files (.gbc) and a library which combines together additional object files. A bytecode library is created by invoking GHC with the `-bytecodelib` flag. A library can be created from in-memory `ModuleByteCode` linkables or by passing `.gbc` files as arguments on the command line. Fixes #26298 - - - - - 0e944da9 by Matthew Pickering at 2025-11-26T16:07:22+00:00 Load bytecode libraries to satisfy package dependencies This commit allows you to use a bytecode library to satisfy a package dependency when using the interpreter. If a user enables `-fprefer-byte-code`, then if a package provides a bytecode library, that will be loaded and used to satisfy the dependency. The main change is to separate the relevant parts of the `LoaderState` into external and home package byte code. Bytecode is loaded into either the home package or external part (similar to HPT/EPS split), HPT bytecode can be unloaded. External bytecode is never unloaded. The unload function has also only been called with an empty list of "stable linkables" for a long time. It has been modified to directly implement a complete unloading of the home package bytecode linkables. At the moment, the bytecode libraries are found in the "library-dirs" field from the package description. In the future when `Cabal` implements support for "bytecode-library-dirs" field, we can read the bytecode libraries from there. No changes to the Cabal submodule are necessary at the moment. Four new tests are added in testsuite/tests/cabal, which generate fake package descriptions and test loading the libraries into GHCi. Fixes #26298 - - - - - 56 changed files: - compiler/GHC/ByteCode/Linker.hs - compiler/GHC/ByteCode/Serialize.hs - compiler/GHC/Driver/Backpack.hs - compiler/GHC/Driver/Downsweep.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Errors/Ppr.hs - compiler/GHC/Driver/Errors/Types.hs - compiler/GHC/Driver/Make.hs - compiler/GHC/Driver/Phases.hs - compiler/GHC/Driver/Pipeline.hs - compiler/GHC/Driver/Session.hs - + compiler/GHC/Linker/ByteCode.hs - compiler/GHC/Linker/Loader.hs - compiler/GHC/Linker/Types.hs - compiler/GHC/Runtime/Debugger.hs - compiler/GHC/Runtime/Eval.hs - compiler/GHC/Settings.hs - compiler/GHC/Types/Error/Codes.hs - compiler/GHC/Unit/Home/PackageTable.hs - compiler/GHC/Unit/Info.hs - compiler/GHC/Unit/State.hs - compiler/ghc.cabal.in - docs/users_guide/phases.rst - libraries/ghc-boot/GHC/Unit/Database.hs - testsuite/config/ghc - testsuite/mk/boilerplate.mk - + testsuite/tests/cabal/Bytecode.hs - + testsuite/tests/cabal/BytecodeForeign.c - + testsuite/tests/cabal/BytecodeForeign.hs - testsuite/tests/cabal/Makefile - testsuite/tests/cabal/all.T - + testsuite/tests/cabal/bytecode.pkg - + testsuite/tests/cabal/bytecode.script - + testsuite/tests/cabal/bytecode_foreign.pkg - + testsuite/tests/cabal/bytecode_foreign.script - testsuite/tests/cabal/ghcpkg03.stderr - testsuite/tests/cabal/ghcpkg03.stderr-mingw32 - testsuite/tests/cabal/ghcpkg05.stderr - testsuite/tests/cabal/ghcpkg05.stderr-mingw32 - + testsuite/tests/cabal/pkg_bytecode.stderr - + testsuite/tests/cabal/pkg_bytecode.stdout - + testsuite/tests/cabal/pkg_bytecode_foreign.stderr - + testsuite/tests/cabal/pkg_bytecode_foreign.stdout - + testsuite/tests/cabal/pkg_bytecode_with_gbc.stderr - + testsuite/tests/cabal/pkg_bytecode_with_gbc.stdout - + testsuite/tests/cabal/pkg_bytecode_with_o.stderr - + testsuite/tests/cabal/pkg_bytecode_with_o.stdout - testsuite/tests/driver/bytecode-object/Makefile - testsuite/tests/driver/bytecode-object/all.T - testsuite/tests/driver/bytecode-object/bytecode_object19.stdout - + testsuite/tests/driver/bytecode-object/bytecode_object20.stdout - + testsuite/tests/driver/bytecode-object/bytecode_object21.stderr - + testsuite/tests/driver/bytecode-object/bytecode_object21.stdout - + testsuite/tests/driver/bytecode-object/bytecode_object23.stdout - + testsuite/tests/driver/bytecode-object/bytecode_object24.stdout - utils/ghc-pkg/Main.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/46af8bd41cbbc5033e8bb20544674c2... -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/46af8bd41cbbc5033e8bb20544674c2... You're receiving this email because of your account on gitlab.haskell.org.