[all-commits] [llvm/llvm-project] 52ced1: Revert D143786 "[X86] Add `TuningPreferShiftShuffl...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 52ced140988a3f9ba715683d3a07b87d93faa9d1
      https://github.com/llvm/llvm-project/commit/52ced140988a3f9ba715683d3a07b87d93faa9d1
  Author: Fangrui Song <i at maskray.me>
  Date:   2023-03-01 (Wed, 01 Mar 2023)

  Changed paths:
    M llvm/lib/Target/X86/X86.td
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86TargetTransformInfo.h
    M llvm/test/CodeGen/X86/avx512-hadd-hsub.ll
    M llvm/test/CodeGen/X86/min-legal-vector-width.ll
    M llvm/test/CodeGen/X86/pr57340.ll
    M llvm/test/CodeGen/X86/shuffle-as-shifts.ll

  Log Message:
  -----------
  Revert D143786 "[X86] Add `TuningPreferShiftShuffle` for when Shifts are preferable to shuffles."

This reverts commit a98ee27416916c3f8af4cd229e0a633423d6d9a3.
It caused MemorySanitizer use-of-uninitialized-value in matchUnaryPermuteShuffle.