Add more of the command line options as attribute flags.

These can be easily queried by the back-end.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176304 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/reference-cast.cpp b/test/CodeGenCXX/reference-cast.cpp
index f440cf5..f157ae9 100644
--- a/test/CodeGenCXX/reference-cast.cpp
+++ b/test/CodeGenCXX/reference-cast.cpp
@@ -193,4 +193,4 @@
   // CHECK: store i64
 }
 
-// CHECK: attributes [[NUW]] = { nounwind }
+// CHECK: attributes [[NUW]] = { nounwind{{.*}} }