[all-commits] [llvm/llvm-project] 057761: [VPlan] Use region for each loop in native path.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 05776122b682684adac3de8bf736cc079989c55f
      https://github.com/llvm/llvm-project/commit/05776122b682684adac3de8bf736cc079989c55f
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2022-06-01 (Wed, 01 Jun 2022)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
    M llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.h
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp
    M llvm/test/Transforms/LoopVectorize/vplan-printing-outer-loop.ll
    M llvm/unittests/Transforms/Vectorize/VPlanHCFGTest.cpp
    M llvm/unittests/Transforms/Vectorize/VPlanSlpTest.cpp
    M llvm/unittests/Transforms/Vectorize/VPlanTest.cpp
    M llvm/unittests/Transforms/Vectorize/VPlanTestBase.h

  Log Message:
  -----------
  [VPlan] Use region for each loop in native path.

This patch updates the VPlan native path to use VPRegionBlocks for all
loops in a loop nest. Up to now, only the outermost loop used a region.

This is a step towards unifying both paths and keep things consistent
between them. It also prepares various code-gen parts for modeling the
pre-header in the inner loop vectorizer (D121624).

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D123005