[all-commits] [llvm/llvm-project] 51fe9c: X86: Mark the EFLAGS def of the FastISel call fram...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 51fe9ce8248d783bb6b3b96fe883dd8cd05642ad
      https://github.com/llvm/llvm-project/commit/51fe9ce8248d783bb6b3b96fe883dd8cd05642ad
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-24 (Thu, 24 Sep 2026)

  Changed paths:
    M llvm/lib/Target/X86/X86FastISel.cpp
    A llvm/test/CodeGen/X86/fast-isel-call-frame-dead-eflags.ll

  Log Message:
  -----------
  X86: Mark the EFLAGS def of the FastISel call frame pseudos dead (#226281)

ADJCALLSTACKDOWN/UP are declared to clobber EFLAGS because they may
expand to a sub/add, but nothing reads the result. SelectionDAG's InstrEmitter
marks the def dead.

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



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications