[PATCH] D157037: [VPlan] Create mask for tail-folding up-front (NFCI).

[Florian Hahn via Phabricator via llvm-commits]

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

Split off mask creation for tail folding and always create the mask for
the header block.

This simplifies createBlockInMask.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157037

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

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