[PATCH] D77869: [VPlan] Introduce VPWidenSelectRecipe (NFC).

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: gilr, rengolin, Ayal, hsaito.
Herald added subscribers: psnobl, rogfer01, rkruppe, tschuett, bollu, hiraditya.
Herald added a project: LLVM.
fhahn retitled this revision from "[VPlan] Introduce VPWidenSelectRecipie (NFC)." to "[VPlan] Introduce VPWidenSelectRecipe (NFC).".

Widening a selects depends on whether the condition is loop invariant or
not. Rather than checking during codegen-time, the information can be
recorded at the VPlan construction time.

This was suggested as part of D76992 <https://reviews.llvm.org/D76992>, to reduce the reliance on
accessing the original underlying IR values.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D77869

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h
  llvm/lib/Transforms/Vectorize/VPlan.cpp
  llvm/lib/Transforms/Vectorize/VPlan.h

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