70 lines
2.5 KiB
C++
70 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_SIMD_H
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#define _LIBCPP_EXPERIMENTAL___SIMD_SIMD_H
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#include <__type_traits/remove_cvref.h>
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#include <experimental/__simd/abi_tag.h>
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#include <experimental/__simd/declaration.h>
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#include <experimental/__simd/reference.h>
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#include <experimental/__simd/scalar.h>
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#include <experimental/__simd/traits.h>
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#include <experimental/__simd/vec_ext.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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// class template simd [simd.class]
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// TODO: implement simd class
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template <class _Tp, class _Abi>
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class simd {
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using _Impl = __simd_operations<_Tp, _Abi>;
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using _Storage = typename _Impl::_SimdStorage;
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_Storage __s_;
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public:
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using value_type = _Tp;
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using reference = __simd_reference<_Tp, _Storage, value_type>;
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using mask_type = simd_mask<_Tp, _Abi>;
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using abi_type = _Abi;
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static _LIBCPP_HIDE_FROM_ABI constexpr size_t size() noexcept { return simd_size_v<value_type, abi_type>; }
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_LIBCPP_HIDE_FROM_ABI simd() noexcept = default;
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// broadcast constructor
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template <class _Up, enable_if_t<__can_broadcast_v<value_type, __remove_cvref_t<_Up>>, int> = 0>
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_LIBCPP_HIDE_FROM_ABI simd(_Up&& __v) noexcept : __s_(_Impl::__broadcast(static_cast<value_type>(__v))) {}
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// generator constructor
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template <class _Generator, enable_if_t<__can_generate_v<value_type, _Generator, size()>, int> = 0>
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explicit _LIBCPP_HIDE_FROM_ABI simd(_Generator&& __g) noexcept
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: __s_(_Impl::__generate(std::forward<_Generator>(__g))) {}
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// scalar access [simd.subscr]
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_LIBCPP_HIDE_FROM_ABI reference operator[](size_t __i) noexcept { return reference(__s_, __i); }
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_LIBCPP_HIDE_FROM_ABI value_type operator[](size_t __i) const noexcept { return __s_.__get(__i); }
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};
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template <class _Tp>
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using native_simd = simd<_Tp, simd_abi::native<_Tp>>;
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template <class _Tp, int _Np>
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using fixed_size_simd = simd<_Tp, simd_abi::fixed_size<_Np>>;
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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_SIMD_H
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