[all-commits] [llvm/llvm-project] 1d74b5: [AArch64][LoadStoreOptimizer] Ignore undef regist...

[huihzhang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1d74b531728cbf542c6900b8d22c12cd8ad7dd1d
      https://github.com/llvm/llvm-project/commit/1d74b531728cbf542c6900b8d22c12cd8ad7dd1d
  Author: Huihui Zhang <huihuiz at quicinc.com>
  Date:   2022-02-10 (Thu, 10 Feb 2022)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
    A llvm/test/CodeGen/AArch64/stp-opt-with-renaming-undef-assert.mir

  Log Message:
  -----------
   [AArch64][LoadStoreOptimizer] Ignore undef registers when checking rename register used between paired instructions.

The content of undef registers are not used in meaningful ways, when checking
if a rename register is used between paired instructions we should ignore
undef registers.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D119305