Hannes Siebenhandl pushed to branch wip/fendor/external-unit-db-cache at Glasgow Haskell Compiler / GHC

Commits:

• dfb54918
  by fendor at 2026-07-16T17:01:22+02:00

  Add regression test for #26423
  

• 45107d67
  by fendor at 2026-07-16T17:01:22+02:00

  WIP: introduce external unit database cache
  

• 1023f9fd
  by fendor at 2026-07-16T17:01:22+02:00

  Never modify UnitInfo for better sharing
  

• 82d58e4d
  by fendor at 2026-07-16T17:01:22+02:00

  WIP: Introduce UnitIndex for global data
  
  -------------------------
  Metric Decrease:
      MultiComponentModules
      MultiComponentModulesRecomp
      MultiComponentModulesRecomp100
      mhu-perf
  -------------------------
  

• c1494f02
  by fendor at 2026-07-16T18:29:18+02:00

  Split State.hs into many more modules
  

38 changed files:

• + changelog.d/unit-index
• compiler/GHC.hs
• compiler/GHC/Driver/Backpack.hs
• compiler/GHC/Driver/Env.hs
• compiler/GHC/Driver/Main/Hsc.hs
• compiler/GHC/Driver/Main/Interactive.hs
• compiler/GHC/Driver/Main/Passes.hs
• compiler/GHC/Driver/Session/Units.hs
• compiler/GHC/Types/Unique.hs
• compiler/GHC/Unit/Env.hs
• + compiler/GHC/Unit/External/Database.hs
• + compiler/GHC/Unit/External/Index.hs
• + compiler/GHC/Unit/External/ModuleOrigin.hs
• + compiler/GHC/Unit/External/Providers.hs
• + compiler/GHC/Unit/External/Query.hs
• + compiler/GHC/Unit/External/Substitution.hs
• + compiler/GHC/Unit/External/Validate.hs
• + compiler/GHC/Unit/External/Visibility.hs
• + compiler/GHC/Unit/External/Wired.hs
• compiler/GHC/Unit/Home/Graph.hs
• compiler/GHC/Unit/Info.hs
• compiler/GHC/Unit/State.hs
• compiler/GHC/Unit/State.hs-boot
• compiler/GHC/Unit/Types.hs
• compiler/ghc.cabal.in
• ghc/GHCi/UI.hs
• hadrian/src/Rules/Generate.hs
• libraries/ghc-boot/GHC/Unit/Database.hs
• testsuite/tests/count-deps/CountDepsParser.stdout
• + testsuite/tests/driver/T26423/Hello.hs
• + testsuite/tests/driver/T26423/Makefile
• + testsuite/tests/driver/T26423/T26423.hs
• + testsuite/tests/driver/T26423/T26423.stderr
• + testsuite/tests/driver/T26423/T26423.stdout
• + testsuite/tests/driver/T26423/all.T
• + testsuite/tests/driver/T26423/test/Test.hs
• + testsuite/tests/driver/T26423/test/test.pkg
• utils/haddock/haddock-api/src/Haddock.hs

The diff was not included because it is too large.