[PATCH] D58187: Teach DTU to recalculate DT/PDT automatically when EntryBB is changed
Jakub Kuderski via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 14 22:19:33 PST 2019
kuhar added inline comments.
Comment at: llvm/include/llvm/Analysis/DomTreeUpdater.h:257
+ /// If the entry block is changed, recalculate available trees.
+ /// Returns true if available trees are recalculated.
> Should we do it for PDT when exit block is changed?
PDT's root never changes -- we use a virtual exit node to support multiple exits. DT should be handled in the same way IMO, but that's a lot of work.
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