[all-commits] [llvm/llvm-project] 2b69ef: [ARM][LV] Add a preferPredicatedReductionSelect ta...

[David Green via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 2b69efded0dc95ffbbdb39d109d38fbb8f0d6390
      https://github.com/llvm/llvm-project/commit/2b69efded0dc95ffbbdb39d109d38fbb8f0d6390
  Author: David Green <david.green at arm.com>
  Date:   2020-08-21 (Fri, 21 Aug 2020)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.h
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/ARM/mve-reduction-predselect.ll
    M llvm/test/Transforms/LoopVectorize/ARM/tail-folding-allowed.ll
    M llvm/test/Transforms/LoopVectorize/ARM/tail-folding-not-allowed.ll

  Log Message:
  -----------
  [ARM][LV] Add a preferPredicatedReductionSelect target hook

As part of D84741, this adds a target hook for the
preferPredicatedReductionSelect option and makes use
of it under MVE, allowing us to tail predicate most
reduction loops.

Differential Revision: https://reviews.llvm.org/D85980