[PATCH] D119571: [funcattrs] use DominatorTree to improve noreturn

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers added a comment.

In D119571#3315181 <https://reviews.llvm.org/D119571#3315181>, @nikic wrote:

> Yes, you'd want to fetch the DominatorTree from the FunctionAnalysisManager. Though as you're only interested in reachability and not actual dominance, you don't actually need a DT here. You can simply walk over the reachable blocks rather than all blocks.

Isn't DominatorTree necessary to compute reachability?


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