[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

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@271108 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/function.objects/arithmetic.operations/transparent.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 #include <functional>
 #include <string>
 
@@ -22,9 +23,8 @@ public:
 };
 
 
-int main () {
-#if _LIBCPP_STD_VER > 11
-
+int main ()
+{
     static_assert ( !is_transparent<std::plus<int>>::value, "" );
     static_assert ( !is_transparent<std::plus<std::string>>::value, "" );
     static_assert (  is_transparent<std::plus<void>>::value, "" );
@@ -55,7 +55,5 @@ int main () {
     static_assert (  is_transparent<std::negate<void>>::value, "" );
     static_assert (  is_transparent<std::negate<>>::value, "" );
     
-#endif
-
     return 0;
-    }
+}

test/std/utilities/function.objects/bitwise.operations/bit_not.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // <functional>
 
 // bit_not
@@ -17,7 +18,6 @@
 
 int main()
 {
-#if _LIBCPP_STD_VER > 11
     typedef std::bit_not<int> F;
     const F f = F();
     static_assert((std::is_same<F::argument_type, int>::value), "" );
@@ -43,5 +43,4 @@ int main()
 
     constexpr int bar = std::bit_not<> () (0xEA95) & 0xFFFF;
     static_assert ( bar == 0x156A, "" );
-#endif
 }

test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 #include <functional>
 #include <string>
 
@@ -23,8 +24,6 @@ public:
 
 
 int main () {
-#if _LIBCPP_STD_VER > 11
-
     static_assert ( !is_transparent<std::bit_and<int>>::value, "" );
     static_assert ( !is_transparent<std::bit_and<std::string>>::value, "" );
     static_assert (  is_transparent<std::bit_and<void>>::value, "" );
@@ -45,7 +44,5 @@ int main () {
     static_assert (  is_transparent<std::bit_not<void>>::value, "" );
     static_assert (  is_transparent<std::bit_not<>>::value, "" );
     
-#endif
-
     return 0;
-    }
+}

test/std/utilities/function.objects/comparisons/transparent.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 #include <functional>
 #include <string>
 
@@ -22,9 +23,8 @@ public:
 };
 
 
-int main () {
-#if _LIBCPP_STD_VER > 11
-
+int main ()
+{
     static_assert ( !is_transparent<std::less<int>>::value, "" );
     static_assert ( !is_transparent<std::less<std::string>>::value, "" );
     static_assert (  is_transparent<std::less<void>>::value, "" );
@@ -55,7 +55,5 @@ int main () {
     static_assert (  is_transparent<std::greater_equal<void>>::value, "" );
     static_assert (  is_transparent<std::greater_equal<>>::value, "" );
 
-#endif
-
     return 0;
-    }
+}

test/std/utilities/function.objects/logical.operations/transparent.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 #include <functional>
 #include <string>
 
@@ -22,9 +23,8 @@ public:
 };
 
 
-int main () {
-#if _LIBCPP_STD_VER > 11
-
+int main ()
+{
     static_assert ( !is_transparent<std::logical_and<int>>::value, "" );
     static_assert ( !is_transparent<std::logical_and<std::string>>::value, "" );
     static_assert (  is_transparent<std::logical_and<void>>::value, "" );
@@ -40,7 +40,5 @@ int main () {
     static_assert (  is_transparent<std::logical_not<void>>::value, "" );
     static_assert (  is_transparent<std::logical_not<>>::value, "" );
     
-#endif
-
     return 0;
-    }
+}