[all-commits] [llvm/llvm-project] f12afd: AArch64: Don't duplicate the branch's implicit def...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f12afd1dcfdaddc197aeb950c0d7eead6d7d96f6
      https://github.com/llvm/llvm-project/commit/f12afd1dcfdaddc197aeb950c0d7eead6d7d96f6
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-21 (Mon, 21 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp
    M llvm/test/CodeGen/AArch64/blr-bti-preserves-operands.mir
    M llvm/test/CodeGen/AArch64/expand-blr-rvmarker-pseudo.mir
    M llvm/test/CodeGen/AArch64/kcfi-bti.ll

  Log Message:
  -----------
  AArch64: Don't duplicate the branch's implicit defs in call pseudo expansion (#225064)

These pseudo expansions started with an implicit LR def and are replaced
with a new instruction with a different LR def. Previously this would copy the
old instruction's operand list, merging with the newly build instruction def
list. Avoid creating a redundant def with inconsistent dead flags. This avoids
failing a future verifier check.

Co-authored-by: Claude (Claude-Opus-4.8) <noreply at anthropic.com>



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