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

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: Ayal, gilr, rengolin.
Herald added subscribers: tschuett, psnobl, rogfer01, bollu, hiraditya.
fhahn requested review of this revision.
Herald added a subscriber: vkmr.
Herald added a project: LLVM.

This patch adds a new VPScalarIVStepsRecipe to handle building scalar
steps.

In the first patch, it only handles the case where there is no vector
induction variable needed.


Repository:
  rG LLVM Github Monorepo

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/VPlanValue.h
  llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-gep.ll
  llvm/test/Transforms/LoopVectorize/ARM/tail-folding-scalar-epilogue-fallback.ll
  llvm/test/Transforms/LoopVectorize/X86/small-size.ll
  llvm/test/Transforms/LoopVectorize/first-order-recurrence-sink-replicate-region.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/optimal-epilog-vectorization.ll
  llvm/test/Transforms/LoopVectorize/pointer-induction.ll
  llvm/test/Transforms/LoopVectorize/pr46525-expander-insertpoint.ll
  llvm/test/Transforms/LoopVectorize/pr51614-fold-tail-by-masking.ll
  llvm/test/Transforms/LoopVectorize/reverse_induction.ll
  llvm/test/Transforms/LoopVectorize/runtime-check-needed-but-empty.ll
  llvm/test/Transforms/LoopVectorize/select-reduction.ll
  llvm/test/Transforms/LoopVectorize/single-value-blend-phis.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.ll

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