[all-commits] [llvm/llvm-project] 27365c: ARM: Mark __chkstk call's implicit LR def dead

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/arm/chkstk-dead-lr
  Home:   https://github.com/llvm/llvm-project
  Commit: 27365c543803f505dbfb521f0b2e75fae7918a75
      https://github.com/llvm/llvm-project/commit/27365c543803f505dbfb521f0b2e75fae7918a75
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-29 (Tue, 29 Sep 2026)

  Changed paths:
    M llvm/lib/Target/ARM/ARMISelLowering.cpp
    A llvm/test/CodeGen/ARM/Windows/chkstk-dead-lr.ll
    M llvm/test/CodeGen/ARM/Windows/vla-cpsr.ll

  Log Message:
  -----------
  ARM: Mark __chkstk call's implicit LR def dead

The WIN__CHKSTK custom inserter already marks the clobbered R12 and CPSR
defs dead, but left the call's implicit-def $lr for later inference.

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



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