[llvm] [libsycl] Add sycl::queue stub (PR #184110)

[Alexey Bader via llvm-commits]

================
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the declaration of the SYCL queue class, which
+/// schedules kernels on a device.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBSYCL___IMPL_QUEUE_HPP
+#define _LIBSYCL___IMPL_QUEUE_HPP
+
+#include <sycl/__impl/detail/config.hpp>
+#include <sycl/__impl/detail/default_async_handler.hpp>
+#include <sycl/__impl/detail/obj_utils.hpp>
+
+#include <sycl/__impl/async_handler.hpp>
+#include <sycl/__impl/device.hpp>
+#include <sycl/__impl/property_list.hpp>
+
----------------
bader wrote:

Shouldn't these includes go before `<sycl/__impl/detail/*>`?

https://github.com/llvm/llvm-project/pull/184110