derek.holloway
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76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_EXPERIMENTAL___SIMD_TRAITS_H
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#define _LIBCPP_EXPERIMENTAL___SIMD_TRAITS_H
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#include <__bit/bit_ceil.h>
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#include <__config>
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#include <__cstddef/size_t.h>
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#include <__type_traits/integral_constant.h>
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#include <__type_traits/is_same.h>
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#include <experimental/__simd/declaration.h>
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#include <experimental/__simd/utility.h>
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#if _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
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_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
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inline namespace parallelism_v2 {
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// traits [simd.traits]
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template <class _Tp>
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inline constexpr bool is_abi_tag_v = false;
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template <class _Tp>
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struct is_abi_tag : bool_constant<is_abi_tag_v<_Tp>> {};
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template <class _Tp>
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inline constexpr bool is_simd_v = false;
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template <class _Tp>
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struct is_simd : bool_constant<is_simd_v<_Tp>> {};
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template <class _Tp>
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inline constexpr bool is_simd_mask_v = false;
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template <class _Tp>
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struct is_simd_mask : bool_constant<is_simd_mask_v<_Tp>> {};
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template <class _Tp>
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inline constexpr bool is_simd_flag_type_v = false;
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template <class _Tp>
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struct is_simd_flag_type : bool_constant<is_simd_flag_type_v<_Tp>> {};
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template <class _Tp, class _Abi = simd_abi::compatible<_Tp>, bool = (__is_vectorizable_v<_Tp> && is_abi_tag_v<_Abi>)>
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struct simd_size : integral_constant<size_t, _Abi::__simd_size> {};
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template <class _Tp, class _Abi>
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struct simd_size<_Tp, _Abi, false> {};
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template <class _Tp, class _Abi = simd_abi::compatible<_Tp>>
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inline constexpr size_t simd_size_v = simd_size<_Tp, _Abi>::value;
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template <class _Tp,
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class _Up = typename _Tp::value_type,
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bool = (is_simd_v<_Tp> && __is_vectorizable_v<_Up>) || (is_simd_mask_v<_Tp> && is_same_v<_Up, bool>)>
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struct memory_alignment : integral_constant<size_t, std::__bit_ceil(sizeof(_Up) * _Tp::size())> {};
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template <class _Tp, class _Up>
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struct memory_alignment<_Tp, _Up, false> {};
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template <class _Tp, class _Up = typename _Tp::value_type>
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inline constexpr size_t memory_alignment_v = memory_alignment<_Tp, _Up>::value;
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} // namespace parallelism_v2
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_LIBCPP_END_NAMESPACE_EXPERIMENTAL
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#endif // _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
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#endif // _LIBCPP_EXPERIMENTAL___SIMD_TRAITS_H
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