[PATCH] D65310: [JumpThreading] In updatePredecessorProfileMetadata, stop searching predecessor when the current bb is an unreachable single bb loop

[Eli Friedman via Phabricator via llvm-commits]

efriedma added subscribers: NutshellySima, brzycki.
efriedma added a comment.

Please rebase against trunk.



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Comment at: llvm/lib/Transforms/Scalar/JumpThreading.cpp:1214
     if (PN->getParent() == BB && isa<BranchInst>(BB->getTerminator()))
-      updatePredecessorProfileMetadata(PN, BB);
+      updatePredecessorProfileMetadata(PN, BB, DTU->getDomTree());
 
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Calling getDomTree() here is expensive; it flushes all updates in the DomTreeUpdater.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D65310/new/

https://reviews.llvm.org/D65310