diff --git a/llvm/include/llvm/ADT/SmallVector.h b/llvm/include/llvm/ADT/SmallVector.h
index 18e1aae4a13d..7e0eab194d0b 100644
--- a/llvm/include/llvm/ADT/SmallVector.h
+++ b/llvm/include/llvm/ADT/SmallVector.h
@@ -486,6 +486,11 @@ public:
     append(S, E);
   }
   
+  SmallVector(const SmallVector &RHS) : SmallVectorImpl<T>(NumTsAvailable) {
+    if (!RHS.empty())
+      operator=(RHS);
+  }
+
   SmallVector(const SmallVectorImpl<T> &RHS)
     : SmallVectorImpl<T>(NumTsAvailable) {
     if (!RHS.empty())