[all-commits] [llvm/llvm-project] 5e4263: [X86][AVX] Add tests showing failure to use chaine...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5e426363ba4bd7b5e298be2b2ee4634e7abe7083
      https://github.com/llvm/llvm-project/commit/5e426363ba4bd7b5e298be2b2ee4634e7abe7083
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-04-03 (Fri, 03 Apr 2020)

  Changed paths:
    M llvm/test/CodeGen/X86/vector-shuffle-512-v64.ll

  Log Message:
  -----------
  [X86][AVX] Add tests showing failure to use chained PACKSS/PACKUS for multi-stage compaction shuffles

The sign/zero extended top bits mean that we could use chained PACK*S ops here