[PATCH] D111681: [IVUsers] Move preheader check into SCEVExpander

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev added a comment.

If I'm reading this correctly, `isPreheaderLoopNest` may find a loop that is dominating, but not containing a given block, and then bail if it doesn't have a preheader. This logic is kind of strange, but I don't really understand its implications.


Repository:
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  https://reviews.llvm.org/D111681/new/

https://reviews.llvm.org/D111681