[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

2 files changed, 2 insertions, 9 deletions

diff --git a/libcxx/test/std/experimental/optional/optional.specalg/make_optional.pass.cpp b/libcxx/test/std/experimental/optional/optional.specalg/make_optional.pass.cpp
index cc95e6110e8..7f5ffea6fa7 100644
--- a/libcxx/test/std/experimental/optional/optional.specalg/make_optional.pass.cpp
+++ b/libcxx/test/std/experimental/optional/optional.specalg/make_optional.pass.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // <optional>
 
 // template <class T>
@@ -21,7 +22,6 @@
 
 int main()
 {
-#if _LIBCPP_STD_VER > 11
     using std::experimental::optional;
     using std::experimental::make_optional;
 
@@ -46,5 +46,4 @@ int main()
         assert(**opt == 3);
         assert(s == nullptr);
     }
-#endif  // _LIBCPP_STD_VER > 11
 }
diff --git a/libcxx/test/std/experimental/optional/optional.specalg/swap.pass.cpp b/libcxx/test/std/experimental/optional/optional.specalg/swap.pass.cpp
index 6c5f7b0e860..d339c53c1f7 100644
--- a/libcxx/test/std/experimental/optional/optional.specalg/swap.pass.cpp
+++ b/libcxx/test/std/experimental/optional/optional.specalg/swap.pass.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // XFAIL: libcpp-no-exceptions
 // <optional>
 
@@ -17,8 +18,6 @@
 #include <type_traits>
 #include <cassert>
 
-#if _LIBCPP_STD_VER > 11
-
 using std::experimental::optional;
 
 class X
@@ -62,12 +61,8 @@ public:
     friend void swap(Z& x, Z& y) {throw 6;}
 };
 
-
-#endif  // _LIBCPP_STD_VER > 11
-
 int main()
 {
-#if _LIBCPP_STD_VER > 11
     {
         optional<int> opt1;
         optional<int> opt2;
@@ -302,5 +297,4 @@ int main()
         assert(static_cast<bool>(opt2) == true);
         assert(*opt2 == 2);
     }
-#endif  // _LIBCPP_STD_VER > 11
 }