[PATCH] D24118: [JumpThreading] Only write back branch-weight MDs for blocks that originally had PGO info

[David Li via llvm-commits]

davidxl added inline comments.

================
Comment at: lib/Transforms/Scalar/JumpThreading.cpp:1633
@@ +1632,3 @@
+  // operand to the metadata node is a name, not a weight.
+  return WeightsNode->getNumOperands() == TI->getNumSuccessors() + 1;
+}
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Check the 'branch_weight' string.


https://reviews.llvm.org/D24118