1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP_EXPERIMENTAL___SIMD_TRAITS_H 11 #define _LIBCPP_EXPERIMENTAL___SIMD_TRAITS_H 12 13 #include <__bit/bit_ceil.h> 14 #include <__type_traits/integral_constant.h> 15 #include <__type_traits/is_same.h> 16 #include <cstddef> 17 #include <experimental/__config> 18 #include <experimental/__simd/declaration.h> 19 #include <experimental/__simd/utility.h> 20 21 #if _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL) 22 23 _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL 24 inline namespace parallelism_v2 { 25 26 // traits [simd.traits] 27 template <class _Tp> 28 inline constexpr bool is_abi_tag_v = false; 29 30 template <class _Tp> 31 struct is_abi_tag : bool_constant<is_abi_tag_v<_Tp>> {}; 32 33 template <class _Tp> 34 inline constexpr bool is_simd_v = false; 35 36 template <class _Tp> 37 struct is_simd : bool_constant<is_simd_v<_Tp>> {}; 38 39 template <class _Tp> 40 inline constexpr bool is_simd_mask_v = false; 41 42 template <class _Tp> 43 struct is_simd_mask : bool_constant<is_simd_mask_v<_Tp>> {}; 44 45 template <class _Tp> 46 inline constexpr bool is_simd_flag_type_v = false; 47 48 template <class _Tp> 49 struct is_simd_flag_type : bool_constant<is_simd_flag_type_v<_Tp>> {}; 50 51 template <class _Tp, class _Abi = simd_abi::compatible<_Tp>, bool = (__is_vectorizable_v<_Tp> && is_abi_tag_v<_Abi>)> 52 struct simd_size : integral_constant<size_t, _Abi::__simd_size> {}; 53 54 template <class _Tp, class _Abi> 55 struct simd_size<_Tp, _Abi, false> {}; 56 57 template <class _Tp, class _Abi = simd_abi::compatible<_Tp>> 58 inline constexpr size_t simd_size_v = simd_size<_Tp, _Abi>::value; 59 60 template <class _Tp, 61 class _Up = typename _Tp::value_type, 62 bool = (is_simd_v<_Tp> && __is_vectorizable_v<_Up>) || (is_simd_mask_v<_Tp> && is_same_v<_Up, bool>)> 63 struct memory_alignment : integral_constant<size_t, std::__bit_ceil(sizeof(_Up) * _Tp::size())> {}; 64 65 template <class _Tp, class _Up> 66 struct memory_alignment<_Tp, _Up, false> {}; 67 68 template <class _Tp, class _Up = typename _Tp::value_type> 69 inline constexpr size_t memory_alignment_v = memory_alignment<_Tp, _Up>::value; 70 71 } // namespace parallelism_v2 72 _LIBCPP_END_NAMESPACE_EXPERIMENTAL 73 74 #endif // _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL) 75 #endif // _LIBCPP_EXPERIMENTAL___SIMD_TRAITS_H 76