[all-commits] [llvm/llvm-project] 2b45ad: Sparc: Mark GETPCX scratch %o7 def dead

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/sparc/getpcx-dead-o7
  Home:   https://github.com/llvm/llvm-project
  Commit: 2b45add61fc453d105e7b18828c3e19d1d753986
      https://github.com/llvm/llvm-project/commit/2b45add61fc453d105e7b18828c3e19d1d753986
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-30 (Wed, 30 Sep 2026)

  Changed paths:
    M llvm/lib/Target/Sparc/SparcInstrInfo.cpp
    A llvm/test/CodeGen/SPARC/getpcx-dead-o7.ll

  Log Message:
  -----------
  Sparc: Mark GETPCX scratch %o7 def dead

The GETPCX expansion uses %o7 only inside the emitted sequence, so the
implicit def is dead. Set the flag when the pseudo is built instead of
leaving it for later recovery.

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



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