[libcxx] Improve tests to use the UNSUPPORTED lit directive

Quite a few libcxx tests seem to follow the format:
 #if _LIBCPP_STD_VER > X
   // Do test.
 #else
   // Empty test.
 #endif
We should instead use the UNSUPPORTED lit directive to exclude the test on
earlier C++ standards. This gives us a more accurate number of test passes
for those standards and avoids unnecessary conflicts with other lit
directives on the same tests.

Reviewers: bcraig, ericwf, mclow.lists

Differential revision: http://reviews.llvm.org/D20730

llvm-svn: 271108

1 files changed, 1 insertions, 7 deletions

diff --git a/libcxx/test/std/experimental/optional/optional.comp_with_t/greater.pass.cpp b/libcxx/test/std/experimental/optional/optional.comp_with_t/greater.pass.cpp
index cf3923bb4fb..5a3b534f137 100644
--- a/libcxx/test/std/experimental/optional/optional.comp_with_t/greater.pass.cpp
+++ b/libcxx/test/std/experimental/optional/optional.comp_with_t/greater.pass.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // <optional>
 
 // template <class T> constexpr bool operator>(const optional<T>& x, const T& v);
@@ -14,8 +15,6 @@
 
 #include <experimental/optional>
 
-#if _LIBCPP_STD_VER > 11
-
 using std::experimental::optional;
 
 struct X
@@ -28,12 +27,8 @@ struct X
 constexpr bool operator < ( const X &lhs, const X &rhs )
     { return lhs.i_ < rhs.i_ ; }
     
-#endif
-
 int main()
 {
-#if _LIBCPP_STD_VER > 11
-
     {
     typedef X T;
     typedef optional<T> O;
@@ -57,5 +52,4 @@ int main()
     static_assert (  !(val  > o3), "" ); // equal
     static_assert (   (T(3) > o3), "" );
     }
-#endif
 }