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| 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_DECLARATION_H |
| 11 | #define _LIBCPP_EXPERIMENTAL___SIMD_DECLARATION_H |
| 12 | |
| 13 | #include <__config> |
| 14 | #include <__cstddef/size_t.h> |
| 15 | |
| 16 | #if _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL) |
| 17 | |
| 18 | // TODO: support more targets |
| 19 | # if defined(__AVX__) |
| 20 | # define _LIBCPP_NATIVE_SIMD_WIDTH_IN_BYTES 32 |
| 21 | # else |
| 22 | # define _LIBCPP_NATIVE_SIMD_WIDTH_IN_BYTES 16 |
| 23 | # endif |
| 24 | |
| 25 | _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL |
| 26 | inline namespace parallelism_v2 { |
| 27 | namespace simd_abi { |
| 28 | template <int> |
| 29 | struct __vec_ext; |
| 30 | struct __scalar; |
| 31 | |
| 32 | using scalar = __scalar; |
| 33 | |
| 34 | // TODO: make this platform dependent |
| 35 | template <int _Np> |
| 36 | using fixed_size = __vec_ext<_Np>; |
| 37 | |
| 38 | template <class _Tp> |
| 39 | inline constexpr int max_fixed_size = 32; |
| 40 | |
| 41 | // TODO: make this platform dependent |
| 42 | template <class _Tp> |
| 43 | using compatible = __vec_ext<16 / sizeof(_Tp)>; |
| 44 | |
| 45 | // TODO: make this platform dependent |
| 46 | template <class _Tp> |
| 47 | using native = __vec_ext<_LIBCPP_NATIVE_SIMD_WIDTH_IN_BYTES / sizeof(_Tp)>; |
| 48 | |
| 49 | // TODO: make this platform dependent |
| 50 | template <class _Tp, size_t _Np, class... _Abis> |
| 51 | struct deduce { |
| 52 | using type _LIBCPP_NODEBUG = fixed_size<_Np>; |
| 53 | }; |
| 54 | |
| 55 | // TODO: make this platform dependent |
| 56 | template <class _Tp, size_t _Np, class... _Abis> |
| 57 | using deduce_t = typename deduce<_Tp, _Np, _Abis...>::type; |
| 58 | |
| 59 | } // namespace simd_abi |
| 60 | |
| 61 | template <class _Tp, class _Abi> |
| 62 | struct __simd_storage; |
| 63 | |
| 64 | template <class _Tp, class _Abi> |
| 65 | struct __mask_storage; |
| 66 | |
| 67 | template <class _Tp, class _Abi> |
| 68 | struct __simd_operations; |
| 69 | |
| 70 | template <class _Tp, class _Abi> |
| 71 | struct __mask_operations; |
| 72 | |
| 73 | struct element_aligned_tag; |
| 74 | struct vector_aligned_tag; |
| 75 | template <size_t> |
| 76 | struct overaligned_tag; |
| 77 | |
| 78 | template <class _Tp, class _Abi = simd_abi::compatible<_Tp>> |
| 79 | class simd; |
| 80 | |
| 81 | template <class _Tp, class _Abi = simd_abi::compatible<_Tp>> |
| 82 | class simd_mask; |
| 83 | |
| 84 | } // namespace parallelism_v2 |
| 85 | _LIBCPP_END_NAMESPACE_EXPERIMENTAL |
| 86 | |
| 87 | #endif // _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL) |
| 88 | #endif // _LIBCPP_EXPERIMENTAL___SIMD_DECLARATION_H |
| 89 |
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