[all-commits] [llvm/llvm-project] b05579: X86: Preserve dead flags on EFLAGS when lowering C...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/x86/cmpxchg16b-dead-eflags
  Home:   https://github.com/llvm/llvm-project
  Commit: b05579425c472d90eadc597bc419b981327d70d4
      https://github.com/llvm/llvm-project/commit/b05579425c472d90eadc597bc419b981327d70d4
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-29 (Tue, 29 Sep 2026)

  Changed paths:
    M llvm/lib/Target/X86/X86ExpandPseudo.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    A llvm/test/CodeGen/X86/cmpxchg16b-dead-eflags.ll
    A llvm/test/CodeGen/X86/cmpxchg16b-dead-eflags.mir

  Log Message:
  -----------
  X86: Preserve dead flags on EFLAGS when lowering CMPXCHG16B pseudos

Co-Authored-By: Claude Opus 5 <noreply at anthropic.com>



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