[all-commits] [llvm/llvm-project] 7505b4: ARM: Preserve the dead flag when activating the op...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/arm/thumb1-optional-def-dead-cpsr
  Home:   https://github.com/llvm/llvm-project
  Commit: 7505b4adfcf64c6e451f59281c920850d96c0002
      https://github.com/llvm/llvm-project/commit/7505b4adfcf64c6e451f59281c920850d96c0002
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-30 (Wed, 30 Sep 2026)

  Changed paths:
    M llvm/lib/Target/ARM/ARMISelLowering.cpp
    A llvm/test/CodeGen/Thumb/optional-def-dead-cpsr.ll

  Log Message:
  -----------
  ARM: Preserve the dead flag when activating the optional CPSR def

This did not preserve the original dead flag, so it would be recomputed
later by LiveVariables or RegAllocFast.

Co-authored-by: Claude Opus 5 <noreply at anthropic.com>



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