[PATCH] D88276: [IsKnownNonZero] Handle the case with non-constant phi nodes

[Nikita Popov via Phabricator via llvm-commits]

nikic added inline comments.


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Comment at: llvm/lib/Analysis/ValueTracking.cpp:2569
+      RecQ.CxtI = PN->getIncomingBlock(U)->getTerminator();
+      if (U.get() == PN && RecQ.CxtI == Q.CxtI)
+        return true;
----------------
Why the `RecQ.CxtI == Q.CxtI` check here? Shouldn't we always be able to skip, regardless of context?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88276/new/

https://reviews.llvm.org/D88276