[all-commits] [llvm/llvm-project] ebb181: [X86] matchScalarReduction - add support for parti...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ebb181cf4098e87c0ac357b09ad5fb2d24b1863d
      https://github.com/llvm/llvm-project/commit/ebb181cf4098e87c0ac357b09ad5fb2d24b1863d
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-03-16 (Mon, 16 Mar 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/movmsk-cmp.ll

  Log Message:
  -----------
  [X86] matchScalarReduction - add support for partial reductions

Add optional support for opt-in partial reduction cases by providing an optional partial mask to indicate which elements have been extracted for the scalar reduction.