Allow empty Weights vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133265 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 613f0c4..7d7bfb1 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -776,7 +776,8 @@
/// iterator
MachineBasicBlock::weight_iterator MachineBasicBlock::
getWeightIterator(MachineBasicBlock::succ_iterator I) {
- assert(Weights.size() == Successors.size() && "Async weight list!");
+ assert((Weights.size() == Successors.size() || Weights.empty()) &&
+ "Async weight list!");
size_t index = std::distance(Successors.begin(), I);
assert(index < Weights.size() && "Not a current successor!");
return Weights.begin() + index;