Fix an infinite loop bug that Vladimir Prus identified.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28281 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Transforms/Utils/BasicBlockUtils.h b/include/llvm/Transforms/Utils/BasicBlockUtils.h
index 9fe7e47fe8ceb9041d022bb69dd84c9a29752131..4c12c704d2dc8a8d390e87d4a946ed0ff022a570 100644 (file)
--- a/include/llvm/Transforms/Utils/BasicBlockUtils.h
+++ b/include/llvm/Transforms/Utils/BasicBlockUtils.h
@@ -86,9 +86,10 @@ inline bool SplitCriticalEdge(BasicBlock *Succ, pred_iterator PI, Pass *P = 0) {
 
 inline bool SplitCriticalEdge(BasicBlock *Src, BasicBlock *Dst, Pass *P = 0) {
   TerminatorInst *TI = Src->getTerminator();
-  for (unsigned i = 0, e = TI->getNumSuccessors(); ; ++i)
+  for (unsigned i = 0, e = TI->getNumSuccessors(); i != e; ++i)
     if (TI->getSuccessor(i) == Dst)
       return SplitCriticalEdge(TI, i, P);
+  return false;
 }
 } // End llvm namespace