[PATCH] D93943: [SimplifyCFG] Update SimplifyBranchOnICmpChain to recognize select form of and/or

[Juneyoung Lee via Phabricator via llvm-commits]

aqjune created this revision.
aqjune added reviewers: lebedev.ri, nikic, fhahn, spatel.
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This patch teaches SimplifyCFG::SimplifyBranchOnICmpChain to understand select form of
(x == C1 || x == C2 || ...) / (x != C1 && x != C2 && ...) and optimize them into switch if possible.
D93065 <https://reviews.llvm.org/D93065> has more context about the transition, including links to the list of optimizations being updated.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D93943

Files:
  llvm/lib/Transforms/Utils/SimplifyCFG.cpp
  llvm/test/Transforms/SimplifyCFG/switch_create.ll

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