[all-commits] [llvm/llvm-project] 94b195: [ARM][LowOverheadLoops] Add horizontal reduction s...

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 94b195ff1236004a0b74a63803b71d45a8ca496a
      https://github.com/llvm/llvm-project/commit/94b195ff1236004a0b74a63803b71d45a8ca496a
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-03-30 (Mon, 30 Mar 2020)

  Changed paths:
    M llvm/lib/Target/ARM/ARMInstrMVE.td
    M llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/vaddv.mir
    M llvm/unittests/Target/ARM/MachineInstrTest.cpp

  Log Message:
  -----------
  [ARM][LowOverheadLoops] Add horizontal reduction support

Add a bit more logic into the 'FalseLaneZeros' tracking to enable
horizontal reductions and also make the VADDV variants
validForTailPredication.

Differential Revision: https://reviews.llvm.org/D76708