[PATCH] D139758: [LV] Cleanup widening of Phi instructions. NFC.

[Michael Maitland via Phabricator via llvm-commits]

michaelmaitland created this revision.
michaelmaitland added reviewers: reames, fhahn, nikolaypanchenko.
Herald added subscribers: rogfer01, hiraditya.
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michaelmaitland requested review of this revision.
Herald added subscribers: llvm-commits, pcwang-thead, vkmr.
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- Refactor creating Phi recipe out of `tryToCreateWidenRecipe()` and into

its own function since `tryToCreateWidenRecipe()` is multiple pages long.

- Change assert into `llvm_unreachable` to avoid calling the same Legality

functions multiple times.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139758

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

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