[PATCH] D129984: [LoopSimplifyCFG] Prevent use-def dominance breach by handling dead exits. PR56243

[Eli Friedman via Phabricator via llvm-commits]

efriedma accepted this revision.
efriedma added a comment.
This revision is now accepted and ready to land.

LGTM

I'm a little worried about the performance cost of the scan, but I guess this should be rare enough that it's unlikely to matter.


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