[PATCH] D58187: Teach DTU to recalculate DT/PDT automatically when EntryBB is changed

[Jakub Kuderski via Phabricator via llvm-commits]

kuhar added inline comments.


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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.
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mkazantsev wrote:
> 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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  https://reviews.llvm.org/D58187/new/

https://reviews.llvm.org/D58187