[all-commits] [llvm/llvm-project] e854c3: [VPlan] Manage noalias/alias_scope metadata in VPl...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e854c381c6344b2ff8d1b58aa97008b4ecd9a9c5
      https://github.com/llvm/llvm-project/commit/e854c381c6344b2ff8d1b58aa97008b4ecd9a9c5
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-05-09 (Fri, 09 May 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanHelpers.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/store-costs-sve.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/transform-narrow-interleave-to-widen-memory-metadata.ll
    M llvm/unittests/Transforms/Vectorize/VPlanTest.cpp

  Log Message:
  -----------
  [VPlan] Manage noalias/alias_scope metadata in VPlan. (#136450)

Use VPIRMetadata added in
https://github.com/llvm/llvm-project/pull/135272
to also manage no-alias metadata added by versioning.

Note that this means we have to build the no-alias metadata up-front
once. If it is not used, it will be discarded automatically.

This also fixes a case where incorrect metadata was added to wide
loads/stores that got converted from an interleave group.

Compile-time impact is neutral:

https://llvm-compile-time-tracker.com/compare.php?from=38bf1af41c5425a552a53feb13c71d82873f1c18&to=2fd7844cfdf5ec0f1c2ce0b9b3ae0763245b6922&stat=instructions:u



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