[all-commits] [llvm/llvm-project] dee78e: CodeGen: Mark inline asm clobber defs dead (#227026)

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dee78e33993c9275a0cdd3dc22a0b21958a42ef4
      https://github.com/llvm/llvm-project/commit/dee78e33993c9275a0cdd3dc22a0b21958a42ef4
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-28 (Mon, 28 Sep 2026)

  Changed paths:
    M clang/test/CodeGen/msp430-register-names.c
    M llvm/lib/CodeGen/GlobalISel/InlineAsmLowering.cpp
    M llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-inline-asm.ll
    M llvm/test/CodeGen/AArch64/aarch64-sme2-asm.ll
    M llvm/test/CodeGen/AArch64/aarch64-za-clobber.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/irtranslator-inline-asm.ll
    M llvm/test/CodeGen/PowerPC/pr47155-47156.ll
    M llvm/test/CodeGen/RISCV/GlobalISel/irtranslator-inline-asm.ll
    M llvm/test/CodeGen/X86/cfi-xmm.ll
    M llvm/test/CodeGen/X86/inline-asm-avx512f-x-constraint.ll
    M llvm/test/CodeGen/X86/inline-asm-default-clobbers.ll
    M llvm/test/CodeGen/X86/tail-dup-asm-goto.ll

  Log Message:
  -----------
  CodeGen: Mark inline asm clobber defs dead (#227026)

A clobber operand has no value associated with it, so the def is always
dead. Set the flag where the INLINEASM is built instead of relying on
later inference.

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



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