[PATCH] D54827: [simplifycfg] Handle 3 sequential branches while the first two can infer the third one.

[luo xionghu via Phabricator via llvm-commits]

yinyuefengyi updated this revision to Diff 175199.
yinyuefengyi added a comment.

use existing logic to implement 'AND' operation of two compare instruction.

getICmpCode in InstCombine already done this job, reuse this logic instead of adding redundant function.
add most test cases to cover.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D54827/new/

https://reviews.llvm.org/D54827

Files:
  llvm/lib/Transforms/Utils/SimplifyCFG.cpp
  llvm/test/Transforms/SimplifyCFG/branch-fold-three.ll

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