[PATCH] D84399: [SCEVExpander] Avoid re-using existing casts if it means updating users.

[Florian Hahn via Phabricator via llvm-commits]

fhahn updated this revision to Diff 282261.
fhahn added a comment.

Handle the case where MustDominate is in InsertedInstructions more obviously, by including the check in the loop condition.

This also requires us to track the inserted LCSSA phis, so I put up D85037 <https://reviews.llvm.org/D85037>


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D84399/new/

https://reviews.llvm.org/D84399

Files:
  llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h
  llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp
  llvm/test/Transforms/LoopDistribute/bounds-expansion-bug.ll
  llvm/test/Transforms/LoopIdiom/reuse-cast.ll
  llvm/test/Transforms/LoopStrengthReduce/pr27056.ll

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