[all-commits] [llvm/llvm-project] 5d91d1: [X86] getFauxShuffleMask - generalise logical shif...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5d91d12d9172a66698c2ecc71778abd5a97df359
      https://github.com/llvm/llvm-project/commit/5d91d12d9172a66698c2ecc71778abd5a97df359
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-04-26 (Sat, 26 Apr 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vector-shuffle-combining-ssse3.ll

  Log Message:
  -----------
  [X86] getFauxShuffleMask - generalise logical shifts to work with non-uniform shift amounts (#137349)

Still doesn't help pre-AVX2 targets which might have lowered SHL to a MUL by that point.



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