diff --git a/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp b/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
index c8c66eb..9c60a2d 100644
--- a/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
@@ -296,8 +296,7 @@
       Visited.insert(T);
       // Add all registers associated with T.
       USet &Asc = AssocMap[T];
-      for (USet::iterator J = Asc.begin(), F = Asc.end(); J != F; ++J)
-        WorkQ.push_back(*J);
+      append_range(WorkQ, Asc);
     }
   }