[PATCH] D115953: [VPlan] Introduce recipe to build scalar steps.

[Florian Hahn via Phabricator via llvm-commits]

fhahn updated this revision to Diff 408248.
fhahn marked 18 inline comments as done.
fhahn added a comment.
Herald added a subscriber: nemanjai.

Completely restructured the patch to introduce VPScalarIVStepsRecipe in VPlan2VPlan transformation, similiar to how `VPWidenCanonicalIV`  is handled.

The code should be much simpler now. I also tried to address the existing comments, if they still applied to the updated patch.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D115953/new/

https://reviews.llvm.org/D115953

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h
  llvm/lib/Transforms/Vectorize/VPlan.cpp
  llvm/lib/Transforms/Vectorize/VPlan.h
  llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
  llvm/lib/Transforms/Vectorize/VPlanTransforms.h
  llvm/lib/Transforms/Vectorize/VPlanValue.h
  llvm/test/Transforms/LoopVectorize/ARM/tail-folding-scalar-epilogue-fallback.ll
  llvm/test/Transforms/LoopVectorize/PowerPC/optimal-epilog-vectorization.ll
  llvm/test/Transforms/LoopVectorize/X86/pr36524.ll
  llvm/test/Transforms/LoopVectorize/float-induction.ll
  llvm/test/Transforms/LoopVectorize/if-pred-stores.ll
  llvm/test/Transforms/LoopVectorize/induction.ll
  llvm/test/Transforms/LoopVectorize/induction_plus.ll
  llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization.ll
  llvm/test/Transforms/LoopVectorize/pointer-induction.ll
  llvm/test/Transforms/LoopVectorize/reverse_induction.ll
  llvm/test/Transforms/LoopVectorize/runtime-check-needed-but-empty.ll
  llvm/test/Transforms/LoopVectorize/use-scalar-epilogue-if-tp-fails.ll
  llvm/test/Transforms/LoopVectorize/vplan-dot-printing.ll
  llvm/test/Transforms/LoopVectorize/vplan-printing.ll
  llvm/test/Transforms/LoopVectorize/vplan-sink-scalars-and-merge-vf1.ll

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