Correct Loop Hint Diagnostic Message

When pragma clang loop unroll() is specified without an argument the diagnostic message should inform that user that 'full' and 'disable' are valid arguments (not 'enable').

llvm-svn: 239363
diff --git a/clang/test/Parser/pragma-loop.cpp b/clang/test/Parser/pragma-loop.cpp
index 547d873..a0213ac 100644
--- a/clang/test/Parser/pragma-loop.cpp
+++ b/clang/test/Parser/pragma-loop.cpp
@@ -132,7 +132,7 @@
 
 /* expected-error {{missing argument; expected 'enable' or 'disable'}} */ #pragma clang loop vectorize()
 /* expected-error {{missing argument; expected an integer value}} */ #pragma clang loop interleave_count()
-/* expected-error {{missing argument; expected 'enable' or 'disable'}} */ #pragma clang loop unroll()
+/* expected-error {{missing argument; expected 'full' or 'disable'}} */ #pragma clang loop unroll()
 
 /* expected-error {{missing option; expected vectorize, vectorize_width, interleave, interleave_count, unroll, or unroll_count}} */ #pragma clang loop
 /* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop badkeyword