Make it clear that this code is iterating in reverse order through the array.
llvm-svn: 137985
diff --git a/llvm/lib/Transforms/Scalar/ObjCARC.cpp b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
index c74c353..5e878cf 100644
--- a/llvm/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2596,8 +2596,9 @@
Order.push_back(Stack.pop_back_val().first);
}
bool BottomUpNestingDetected = false;
- while (!Order.empty()) {
- BasicBlock *BB = Order.pop_back_val();
+ for (SmallVectorImpl<BasicBlock *>::const_reverse_iterator I =
+ Order.rbegin(), E = Order.rend(); I != E; ++I) {
+ BasicBlock *BB = *I;
BottomUpNestingDetected |= VisitBottomUp(BB, BBStates, Retains);
}