[PATCH] D108910: [IndVars] Break backedge and replace PHIs if loop exits on 1st iteration

[Dmitry Makogon via Phabricator via llvm-commits]

dmakogon updated this revision to Diff 369640.
dmakogon added a comment.

Resolved style issues and updated test to have an exiting branch on true condition. 
Now we mark all exits after the one taken on the 1st iteration as not live, so that they never branch to exit.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108910/new/

https://reviews.llvm.org/D108910

Files:
  llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
  llvm/test/Transforms/IndVarSimplify/eliminate-backedge.ll

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