diff --git a/test/CodeGen/vector.c b/test/CodeGen/vector.c
index 8388b09..52ad19f 100644
--- a/test/CodeGen/vector.c
+++ b/test/CodeGen/vector.c
@@ -1,3 +1,4 @@
+// RUN: clang -emit-llvm %s
 typedef short __v4hi __attribute__ ((__vector_size__ (8)));
 
 void f()