[all-commits] [llvm/llvm-project] 93fb72: [X86][AVX] Add HADD lane crossing test

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 93fb72575f7a70c0e095f7b278fd249260fe84a8
      https://github.com/llvm/llvm-project/commit/93fb72575f7a70c0e095f7b278fd249260fe84a8
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-04-07 (Wed, 07 Apr 2021)

  Changed paths:
    M llvm/test/CodeGen/X86/vector-shuffle-256-v4.ll

  Log Message:
  -----------
  [X86][AVX] Add HADD lane crossing test

This used to work before rG77d625f8d8aa, but we now merge the shuffles across the fadd resulting in a hadd that requires a lane crossing post shuffle, which we don't permit on AVX1 targets