[all-commits] [llvm/llvm-project] 7acfbc: [VPlan] Remove PtrIV::IsScalarAfterVectorization, ...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7acfbc23a71cf66bbba89de55568064d732a61d1
      https://github.com/llvm/llvm-project/commit/7acfbc23a71cf66bbba89de55568064d732a61d1
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-11-20 (Thu, 20 Nov 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/epilog-vectorization-widen-inductions.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-gep.ll
    M llvm/test/Transforms/LoopVectorize/X86/interleave-opaque-pointers.ll
    M llvm/test/Transforms/LoopVectorize/pointer-induction-index-width-smaller-than-iv-width.ll

  Log Message:
  -----------
  [VPlan] Remove PtrIV::IsScalarAfterVectorization, use VPlan analysis. (#168289)

Remove `VPWidenPointerInductionRecipe::IsScalarAfterVectorization` and
replace it with `onlyScalarValuesUsed`. This removes the need to carry
state from the legacy cost model through VPlan, and the VPlan-based
analysis gives more accurate results, avoiding a number of extracts.

PR: https://github.com/llvm/llvm-project/pull/168289



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