Use do+while instead of while for loops which obviously have a
non-zero trip count. Use SmallVector's pop_back_val().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92734 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/CloneLoop.cpp b/lib/Transforms/Utils/CloneLoop.cpp
index 7e000a1..38928dc 100644
--- a/lib/Transforms/Utils/CloneLoop.cpp
+++ b/lib/Transforms/Utils/CloneLoop.cpp
@@ -91,7 +91,7 @@
Loop *NewParentLoop = NULL;
- while (!LoopNest.empty()) {
+ do {
Loop *L = LoopNest.pop_back_val();
Loop *NewLoop = new Loop();
@@ -123,7 +123,7 @@
// Process sub loops
for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I)
LoopNest.push_back(*I);
- }
+ } while (!LoopNest.empty());
// Remap instructions to reference operands from ValueMap.
for(SmallVector<BasicBlock *, 16>::iterator NBItr = NewBlocks.begin(),