[all-commits] [llvm/llvm-project] 74cd4d: [AMDGPU] Preserve deadness of vcc when shrinking i...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 74cd4dee20e85cb2b071283a5caa8f924539e1b1
      https://github.com/llvm/llvm-project/commit/74cd4dee20e85cb2b071283a5caa8f924539e1b1
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2021-10-22 (Fri, 22 Oct 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp
    M llvm/test/CodeGen/AMDGPU/shrink-carry.mir

  Log Message:
  -----------
  [AMDGPU] Preserve deadness of vcc when shrinking instructions

This doesn't have any effect on codegen now, but it might do in the
future if we shrink instructions before post-RA scheduling, which is
sensitive to live vs dead defs.

Differential Revision: https://reviews.llvm.org/D112305