[all-commits] [llvm/llvm-project] 0de8ae: [VPlan] Support to widen select intructions in VPl...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0de8aeae7249d314f25b5188c91b04b9a24003ad
      https://github.com/llvm/llvm-project/commit/0de8aeae7249d314f25b5188c91b04b9a24003ad
  Author: Mauri Mustonen <mauri.mustonen at tuni.fi>
  Date:   2021-03-10 (Wed, 10 Mar 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.h
    A llvm/test/Transforms/LoopVectorize/vplan-widen-select-instruction.ll
    M llvm/unittests/Transforms/Vectorize/VPlanHCFGTest.cpp
    M llvm/unittests/Transforms/Vectorize/VPlanTestBase.h

  Log Message:
  -----------
  [VPlan] Support to widen select intructions in VPlan native path

Add support to widen select instructions in VPlan native path by using a correct recipe when such instructions are encountered. This is already used by inner loop vectorizer.

Previously select instructions get handled by the wrong recipe and resulted in unreachable instruction errors like this one: https://bugs.llvm.org/show_bug.cgi?id=48139.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D97136