[all-commits] [llvm/llvm-project] 80aa7e: [VPlan] Merge predicated-triangle regions, after s...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 80aa7e147e2a3a2a0435663ad9171b9ccdcc0178
      https://github.com/llvm/llvm-project/commit/80aa7e147e2a3a2a0435663ad9171b9ccdcc0178
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2021-06-28 (Mon, 28 Jun 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.h
    M llvm/test/Transforms/LoopVectorize/X86/consecutive-ptr-uniforms.ll
    M llvm/test/Transforms/LoopVectorize/X86/small-size.ll
    M llvm/test/Transforms/LoopVectorize/X86/x86-pr39099.ll
    M llvm/test/Transforms/LoopVectorize/X86/x86-predication.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence-sink-replicate-region.ll
    M llvm/test/Transforms/LoopVectorize/if-pred-non-void.ll
    M llvm/test/Transforms/LoopVectorize/reduction-inloop-pred.ll
    M llvm/test/Transforms/LoopVectorize/reduction-predselect.ll
    M llvm/test/Transforms/LoopVectorize/vplan-sink-scalars-and-merge.ll

  Log Message:
  -----------
  [VPlan] Merge predicated-triangle regions, after sinking.

Sinking scalar operands into predicated-triangle regions may allow
merging regions. This patch adds a VPlan-to-VPlan transform that tries
to merge predicate-triangle regions after sinking.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D100260