Adding RUN lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17527 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Generic/call-ret0.ll b/test/CodeGen/Generic/call-ret0.ll
index 205b0be..79edc1e 100644
--- a/test/CodeGen/Generic/call-ret0.ll
+++ b/test/CodeGen/Generic/call-ret0.ll
@@ -1,3 +1,5 @@
+; RUN: llvm-as < %s | llc
+
 int %foo(int %x) {
   ret int %x
 }