[libcxx-commits] [libcxx] [libc++] Implement C++20 atomic_ref (PR #76647)

[Louis Dionne via libcxx-commits]

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@@ -0,0 +1,221 @@
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
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ldionne wrote:

With respect to the `// XFAIL: !has-1024-bit-atomics` that are "necessary" to make the CI happy: I would just do it consistently with what we do elsewhere and use `// XFAIL: !has-1024-bit-atomics`. We can (and should) then go and fix that throughout the whole test suite to avoid disabling entire tests on platforms that don't support such atomics.

https://github.com/llvm/llvm-project/pull/76647