[all-commits] [llvm/llvm-project] 460bba: Revert "[X86] combineCMP - attempt to simplify KSH...

[Zequan Wu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 460bba35211853b6278ddd6064f7228db02da132
      https://github.com/llvm/llvm-project/commit/460bba35211853b6278ddd6064f7228db02da132
  Author: Zequan Wu <zequanwu at google.com>
  Date:   2023-09-01 (Fri, 01 Sep 2023)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx512-insert-extract.ll
    M llvm/test/CodeGen/X86/movmsk-cmp.ll
    M llvm/test/CodeGen/X86/pr33349.ll
    M llvm/test/CodeGen/X86/pr34177.ll

  Log Message:
  -----------
  Revert "[X86] combineCMP - attempt to simplify KSHIFTR mask element extractions when just comparing against zero"

This reverts commit 239ab16ec1213749a2228368298519b377d336bb.

This causes crashes when compiling chromium with asan, attached reduced ir at: https://reviews.llvm.org/rG239ab16ec1213749a2228368298519b377d336bb#1245595