Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/utility/declval/declval.pass.cpp

@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T> typename add_rvalue_reference<T>::type declval() noexcept;
+
+#include <utility>
+#include <type_traits>
+
+class A
+{
+    A(const A&);
+    A& operator=(const A&);
+};
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+    static_assert((std::is_same<decltype(std::declval<A>()), A&&>::value), "");
+#else
+    static_assert((std::is_same<decltype(std::declval<A>()), A>::value), "");
+#endif
+}