[all-commits] [llvm/llvm-project] fab5c8: [X86][AVX] Add test showing poor expansion of bit-...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fab5c853ff78bdd72f2cc7e75766d065e6cf55ad
      https://github.com/llvm/llvm-project/commit/fab5c853ff78bdd72f2cc7e75766d065e6cf55ad
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-05-16 (Mon, 16 May 2022)

  Changed paths:
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx.ll

  Log Message:
  -----------
  [X86][AVX] Add test showing poor expansion of bit-reversal permutation shuffles

Reported here: https://discourse.llvm.org/t/ir-alternatives-to-freeze-to-selectively-prevent-compiler-from-combining-shufflevectors/62521