[all-commits] [llvm/llvm-project] 23b670: [AArch64] Drop poison-generating flags in `genSubA...

[Antonio Frighetto via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 23b6709c72357c8b8f0ffa6cdbd860977441982b
      https://github.com/llvm/llvm-project/commit/23b6709c72357c8b8f0ffa6cdbd860977441982b
  Author: Antonio Frighetto <me at antoniofrighetto.com>
  Date:   2024-04-26 (Fri, 26 Apr 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/test/CodeGen/AArch64/machine-combiner-subadd2.mir

  Log Message:
  -----------
  [AArch64] Drop poison-generating flags in `genSubAdd2SubSub` combiner

A miscompilation issue has been addressed with improved handling.

Fixes: https://github.com/llvm/llvm-project/issues/88950.



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