[PATCH] D77211: [LSR] do not replace PHI nodes if its scev is SCEVUnknown

[Sam Parker via Phabricator via llvm-commits]

samparker added inline comments.


================
Comment at: llvm/lib/Analysis/ScalarEvolutionExpander.cpp:2040
         // If this phi has the same width but is more canonical, replace the
         // original with it. As part of the "more canonical" determination,
         // respect a prior decision to use an IV chain.
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>From your description of the problem, can we just check the incoming values of the phis too?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D77211/new/

https://reviews.llvm.org/D77211