[PATCH] D27602: [PGO] Fix insane counts due to nonreturn calls

[David Li via Phabricator via llvm-commits]

davidxl accepted this revision.
davidxl added a comment.
This revision is now accepted and ready to land.

lgtm



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Comment at: lib/Transforms/Instrumentation/PGOInstrumentation.cpp:889
+          uint64_t OutSum = sumEdgeCount(Count->OutEdges);
+          if (Count->CountValue > OutSum)
+            Total = Count->CountValue - OutSum;
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Add a comment here that "If the one of the successor block can early terminate (no-return), we can end up with situation where out edge sum count is larger as the source BB's count is collected by a post-dominated block'.


https://reviews.llvm.org/D27602