1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_BACKEND_H 10 #define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_BACKEND_H 11 12 #include <__config> 13 #include <cstddef> 14 15 #if defined(_LIBCPP_PSTL_CPU_BACKEND_SERIAL) 16 # include <__algorithm/pstl_backends/cpu_backends/serial.h> 17 #elif defined(_LIBCPP_PSTL_CPU_BACKEND_THREAD) 18 # include <__algorithm/pstl_backends/cpu_backends/thread.h> 19 #elif defined(_LIBCPP_PSTL_CPU_BACKEND_LIBDISPATCH) 20 # include <__algorithm/pstl_backends/cpu_backends/libdispatch.h> 21 #else 22 # error "Invalid CPU backend choice" 23 #endif 24 25 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 26 # pragma GCC system_header 27 #endif 28 29 #if _LIBCPP_STD_VER >= 17 30 31 _LIBCPP_BEGIN_NAMESPACE_STD 32 33 struct __cpu_backend_tag {}; 34 35 inline constexpr size_t __lane_size = 64; 36 37 _LIBCPP_END_NAMESPACE_STD 38 39 #endif // _LIBCPP_STD_VER >= 17 40 41 #endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_BACKEND_H 42