Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC

Commits:

• 6813f002
  by Simon Jakobi at 2026-06-26T04:51:47-04:00

  Reg.Linear: drop Platform argument from most FR (FreeRegs) methods
  
  The FR class has one instance per CPU architecture, so any
  architecture-constant information its methods derived from the Platform
  argument can instead be baked into the instance. This removes the now
  needless Platform argument from frAllocateReg, frGetFreeRegs and
  frReleaseReg.
  
  frInitFreeRegs keeps its Platform argument: the initial allocatable set is
  genuinely platform-dependent, see Note [Aarch64 Register x18 at Darwin and
  Windows].
  
  Fixes #26665
  
  Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
  

• 3b2a9409
  by Zubin Duggal at 2026-06-26T04:52:39-04:00

  testsuite: Report fragile failures as skipped in JUnit output
  

• ffb880ae
  by Simon Hengel at 2026-06-26T07:40:42-04:00

  Rename `MCDiagnostic` to `InternalMCDiagnostic`
  
  `MCDiagnostic` is meant to be used for compiler diagnostics.
  
  Any code that creates `MCDiagnostic` directly, without going through
  `GHC.Driver.Errors.printMessage`, sidesteps `-fdiagnostics-as-json` (see
  e.g. !14616, !14475, !14492 !14548).
  
  To avoid this in the future, this change more narrowly controls who
  creates `MCDiagnostic` (see #24113).
  

• 120dc0de
  by Simon Hengel at 2026-06-26T07:40:43-04:00

  Remove deprecated flag `-ddump-json` (see #24113)
  
  This was first deprecated in 9.10.1.
  

35 changed files:

• + changelog.d/remove-ddump-json-flag
• compiler/GHC/CmmToAsm/Reg/Linear.hs
• compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
• compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
• compiler/GHC/CmmToAsm/Reg/Linear/X86.hs
• compiler/GHC/CmmToAsm/Reg/Linear/X86_64.hs
• compiler/GHC/CmmToAsm/X86/RegInfo.hs
• compiler/GHC/CmmToAsm/X86/Regs.hs
• compiler/GHC/Driver/Errors.hs
• compiler/GHC/Driver/Flags.hs
• compiler/GHC/Driver/Main/Passes.hs
• compiler/GHC/Driver/Pipeline.hs
• compiler/GHC/Driver/Session.hs
• compiler/GHC/HsToCore/Monad.hs
• compiler/GHC/Tc/Errors.hs
• compiler/GHC/Tc/Utils/Monad.hs
• compiler/GHC/Types/Error.hs
• − compiler/GHC/Types/Error.hs-boot
• compiler/GHC/Types/SourceError.hs
• compiler/GHC/Utils/Error.hs
• compiler/GHC/Utils/Logger.hs
• docs/users_guide/debugging.rst
• ghc/GHCi/UI.hs
• ghc/GHCi/UI/Exception.hs
• testsuite/driver/junit.py
• testsuite/tests/driver/T16167.stderr
• − testsuite/tests/driver/T16167.stdout
• testsuite/tests/driver/all.T
• testsuite/tests/driver/json2.stderr
• − testsuite/tests/driver/json_dump.hs
• − testsuite/tests/driver/json_dump.stderr
• utils/check-exact/Main.hs
• utils/check-exact/Preprocess.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs

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