Adding RUN lines.

llvm-svn: 17528
diff --git a/llvm/test/Regression/Assembler/2003-05-21-ConstantShiftExpr.ll b/llvm/test/Regression/Assembler/2003-05-21-ConstantShiftExpr.ll
index 0a4f8c2..830dd7a 100644
--- a/llvm/test/Regression/Assembler/2003-05-21-ConstantShiftExpr.ll
+++ b/llvm/test/Regression/Assembler/2003-05-21-ConstantShiftExpr.ll
@@ -1,3 +1,5 @@
+; RUN: llvm-as < %s -o /dev/null -f
+
 ; Test that shift instructions can be used in constant expressions.
 
 global int shl (int 7, ubyte 19)