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sycl/include/sycl/detail/sycl_builtins.hpp

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+//==---------------- sycl_builtins.hpp --- SYCL access ---------------------==//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#pragma once
+
+#include <sycl/detail/defines_elementary.hpp> // for __DPCPP_SYCL_EXTERNAL
+
+#ifdef __SYCL_DEVICE_ONLY__
+// Request a fixed-size allocation in local address space at kernel scope.
+// Required for group_local_memory and work_group_static.
+extern "C" __DPCPP_SYCL_EXTERNAL __attribute__((opencl_local)) std::uint8_t *
+__sycl_allocateLocalMemory(std::size_t Size, std::size_t Alignment);
+// Request a placeholder for a dynamically-sized buffer in local address space
+// at kernel scope. Required for work_group_static.
+extern "C" __DPCPP_SYCL_EXTERNAL __attribute__((opencl_local)) std::uint8_t *
+__sycl_dynamicLocalMemoryPlaceholder();
+#endif