[PATCH] D116276: [IndVarS] Keep the nsw/nuw flags after simplifyAndExtend

[guopeilin via Phabricator via llvm-commits]

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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116276

Files:
  llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
  llvm/test/Transforms/IndVarSimplify/keep-nsw-nuw-flag.ll
  llvm/test/Transforms/LoopFlatten/widen-iv.ll

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