[PATCH] D138412: [IndVarSimplify] Lift limitations on IV being a Phi for turn-to-invariant

[Philip Reames via Phabricator via llvm-commits]

reames added a comment.

LGTM

I do want to warn that this may be a subtler perf tradeoff than it looks.  I'm fine with landing this, but be alert for perf regressions and be prepared to investigate and revert if needed.  Despite that, I think this is generally the right idea.


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  https://reviews.llvm.org/D138412/new/

https://reviews.llvm.org/D138412