getSuccWeight returns now default 0 if Weights vector is empty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133271 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 7d7bfb1..c0f71d2 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -768,6 +768,9 @@
/// getSuccWeight - Return weight of the edge from this block to MBB.
///
uint32_t MachineBasicBlock::getSuccWeight(MachineBasicBlock *succ) {
+ if (Weights.empty())
+ return 0;
+
succ_iterator I = std::find(Successors.begin(), Successors.end(), succ);
return *getWeightIterator(I);
}
@@ -776,8 +779,7 @@
/// iterator
MachineBasicBlock::weight_iterator MachineBasicBlock::
getWeightIterator(MachineBasicBlock::succ_iterator I) {
- assert((Weights.size() == Successors.size() || Weights.empty()) &&
- "Async weight list!");
+ assert(Weights.size() == Successors.size() && "Async weight list!");
size_t index = std::distance(Successors.begin(), I);
assert(index < Weights.size() && "Not a current successor!");
return Weights.begin() + index;