[all-commits] [llvm/llvm-project] 278775: [VPlan] Allow derived IVs and scalar-steps in narr...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2787759ef2e41b19f8bfde06fe9a26b25d1f5834
      https://github.com/llvm/llvm-project/commit/2787759ef2e41b19f8bfde06fe9a26b25d1f5834
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-06-29 (Sun, 29 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/transform-narrow-interleave-to-widen-memory-derived-ivs.ll

  Log Message:
  -----------
  [VPlan] Allow derived IVs and scalar-steps in narrowing interleave.

Both VPDerivedIVRecipe and VPScalarIVSteps recipe should be supported in
narrowInterleaveGroups:
 * VPDerivedIVRecipe is based on the canonical IV and independent of VF,
 * VPScalarIVSteps takes the VF as operand, so it will be updated by
   narrowInterleaveGroup.



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