[PATCH] D91593: [IndVars] LCSSA Phi users should not prevent widening

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev created this revision.
mkazantsev added reviewers: skatkov, fhahn, lebedev.ri, reames.
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When widening an IndVar that has LCSSA Phi users outside
the loop, we can safely widen it as usual and then truncate
the result outside the loop without hurting the performance.


https://reviews.llvm.org/D91593

Files:
  llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
  llvm/test/Transforms/IndVarSimplify/widen-loop-comp.ll

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