[all-commits] [llvm/llvm-project] a2b8a9: [VPlan] Pass NumUnrolledElems as operand to VPWide...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a2b8a93ff9cfdae4a1578c60fe5efc8ebd8c5571
      https://github.com/llvm/llvm-project/commit/a2b8a93ff9cfdae4a1578c60fe5efc8ebd8c5571
  Author: Luke Lau <luke at igalia.com>
  Date:   2025-06-20 (Fri, 20 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp

  Log Message:
  -----------
  [VPlan] Pass NumUnrolledElems as operand to VPWidenPointerInductionRecipe. NFC (#119859)

Similarly to VPWidenIntOrFpInductionRecipe, if we want to support it in
EVL tail folding we need to increment the induction by EVL steps instead
of VF*UF steps, but currently this is hard-wired in
VPWidenPointerInductionRecipe.

This adds an operand for the number of elements unrolled and plumbs it
through, so that we can swap it out in
VPlanTransforms::tryAddExplicitVectorLength further down the line.



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