diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 753c95b..863b0b9 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -526,6 +526,13 @@
     predecessors_.Put(1, temp);
   }
 
+  void SwapSuccessors() {
+    DCHECK_EQ(successors_.Size(), 2u);
+    HBasicBlock* temp = successors_.Get(0);
+    successors_.Put(0, successors_.Get(1));
+    successors_.Put(1, temp);
+  }
+
   size_t GetPredecessorIndexOf(HBasicBlock* predecessor) {
     for (size_t i = 0, e = predecessors_.Size(); i < e; ++i) {
       if (predecessors_.Get(i) == predecessor) {