Index: lib/AST/TypePrinter.cpp
===================================================================
--- lib/AST/TypePrinter.cpp
+++ lib/AST/TypePrinter.cpp
@@ -1738,17 +1738,19 @@
       case LangAS::opencl_private:
         break;
       case LangAS::opencl_constant:
-      case LangAS::cuda_constant:
         OS << "__constant";
         break;
       case LangAS::opencl_generic:
         OS << "__generic";
         break;
       case LangAS::cuda_device:
-        OS << "__device";
+        OS << "__device__";
+        break;
+      case LangAS::cuda_constant:
+        OS << "__constant__";
         break;
       case LangAS::cuda_shared:
-        OS << "__shared";
+        OS << "__shared__";
         break;
       default:
         OS << "__attribute__((address_space(";