[PATCH] D95026: [SimplifyCFG] Update FoldBranchToCommonDest to be poison-safe

[Juneyoung Lee via Phabricator via llvm-commits]

aqjune added a comment.

> Another place that calls FoldBranchToCommonDest is LoopSimplify. I think this will have a nontrivial impact since SCEV is more conservative in this case.

Enabling `PoisonSafe` when called by LoopSimplify requires performance evaluation.
For any patches that require experiment, I'd like to write on Feb; right now I don't have enough bandwidth.


Repository:
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https://reviews.llvm.org/D95026