[all-commits] [llvm/llvm-project] 4b6ad1: [VPlan] Sink predicated stores with complementary ...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4b6ad1187633c55087e00ab90567260ae6aafd0d
      https://github.com/llvm/llvm-project/commit/4b6ad1187633c55087e00ab90567260ae6aafd0d
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-12-02 (Tue, 02 Dec 2025)

  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/hoist-predicated-loads-with-predicated-stores.ll

  Log Message:
  -----------
  [VPlan] Sink predicated stores with complementary masks. (#168771)

Extend the logic to hoist predicated loads
(https://github.com/llvm/llvm-project/pull/168373) to sink predicated
stores with complementary masks in a similar fashion.

The patch refactors some of the existing logic for legality checks to be
shared between hosting and sinking, and adds a new sinking transform on
top.

With respect to the legality checks, for sinking stores the code also
checks if there are any aliasing stores that may alias, not only loads.

PR: https://github.com/llvm/llvm-project/pull/168771



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