[all-commits] [llvm/llvm-project] 1ddac9: [X86][SSE] Peek though MOVMSK source sign bits usi...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1ddac9563d7f2414e6c4302f9902ac1294966161
      https://github.com/llvm/llvm-project/commit/1ddac9563d7f2414e6c4302f9902ac1294966161
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-05-28 (Thu, 28 May 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vec_saddo.ll
    M llvm/test/CodeGen/X86/vec_smulo.ll
    M llvm/test/CodeGen/X86/vec_ssubo.ll

  Log Message:
  -----------
  [X86][SSE] Peek though MOVMSK source sign bits using SimplifyMultipleUseDemandedBits

Allows SimplifyDemandedBitsForTargetNode to peek through multi-use ops where MOVMSK only demands the signbit of each vector element.