Adding RUN lines.

llvm-svn: 17529
diff --git a/llvm/test/Regression/C++Frontend/2003-08-21-EmptyClass.cpp b/llvm/test/Regression/C++Frontend/2003-08-21-EmptyClass.cpp
index 34629d1..2f90b3a 100644
--- a/llvm/test/Regression/C++Frontend/2003-08-21-EmptyClass.cpp
+++ b/llvm/test/Regression/C++Frontend/2003-08-21-EmptyClass.cpp
@@ -1,3 +1,5 @@
+// RUN: %llvmgxx -S %s -o - | llvm-as -f -o /dev/null
+
 // This tests compilation of EMPTY_CLASS_EXPR's
 
 struct empty {};