[all-commits] [llvm/llvm-project] e6dc2c: [X86][SSE] combineTargetShuffle - rearrange shuffl...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e6dc2c8ce7dbc307c89f9ca5020087a6a6fb15d0
      https://github.com/llvm/llvm-project/commit/e6dc2c8ce7dbc307c89f9ca5020087a6a6fb15d0
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-08-10 (Mon, 10 Aug 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp

  Log Message:
  -----------
  [X86][SSE] combineTargetShuffle - rearrange shuffle(hop,hop) matching to delay shuffle mask manipulation. NFC.

Check that we're shuffling hadd/pack ops first before altering shuffle masks.

First step towards adding extra functionality, plus it avoids costly shuffle mask manipulation if not necessary.


  Commit: 891ddfc6438028c954b20683b31890e553ac109c
      https://github.com/llvm/llvm-project/commit/891ddfc6438028c954b20683b31890e553ac109c
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-08-10 (Mon, 10 Aug 2020)

  Changed paths:
    M llvm/test/CodeGen/X86/haddsub-undef.ll

  Log Message:
  -----------
  [X86][SSE] Add single undef element HADD test cases from PR34724


Compare: https://github.com/llvm/llvm-project/compare/5f104a809983...891ddfc64380