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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_VEC_EXT_H
11#define _LIBCPP_EXPERIMENTAL___SIMD_VEC_EXT_H
12
13#include <__assert>
14#include <__bit/bit_ceil.h>
15#include <__config>
16#include <__cstddef/size_t.h>
17#include <__type_traits/integral_constant.h>
18#include <__utility/forward.h>
19#include <__utility/integer_sequence.h>
20#include <experimental/__simd/declaration.h>
21#include <experimental/__simd/traits.h>
22#include <experimental/__simd/utility.h>
23
24#if _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
25
26_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
27inline namespace parallelism_v2 {
28namespace simd_abi {
29template <int _Np>
30struct __vec_ext {
31 static constexpr size_t __simd_size = _Np;
32};
33} // namespace simd_abi
34
35template <int _Np>
36inline constexpr bool is_abi_tag_v<simd_abi::__vec_ext<_Np>> = _Np > 0 && _Np <= 32;
37
38template <class _Tp, int _Np>
39struct __simd_storage<_Tp, simd_abi::__vec_ext<_Np>> {
40 _Tp __data __attribute__((__vector_size__(std::__bit_ceil((sizeof(_Tp) * _Np)))));
41
42 _LIBCPP_HIDE_FROM_ABI _Tp __get(size_t __idx) const noexcept {
43 _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__idx < _Np, "Index is out of bounds");
44 return __data[__idx];
45 }
46 _LIBCPP_HIDE_FROM_ABI void __set(size_t __idx, _Tp __v) noexcept {
47 _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__idx < _Np, "Index is out of bounds");
48 __data[__idx] = __v;
49 }
50};
51
52template <class _Tp, int _Np>
53struct __mask_storage<_Tp, simd_abi::__vec_ext<_Np>>
54 : __simd_storage<decltype(experimental::__choose_mask_type<_Tp>()), simd_abi::__vec_ext<_Np>> {};
55
56template <class _Tp, int _Np>
57struct __simd_operations<_Tp, simd_abi::__vec_ext<_Np>> {
58 using _SimdStorage _LIBCPP_NODEBUG = __simd_storage<_Tp, simd_abi::__vec_ext<_Np>>;
59 using _MaskStorage _LIBCPP_NODEBUG = __mask_storage<_Tp, simd_abi::__vec_ext<_Np>>;
60
61 static _LIBCPP_HIDE_FROM_ABI _SimdStorage __broadcast(_Tp __v) noexcept {
62 _SimdStorage __result;
63 for (int __i = 0; __i < _Np; ++__i) {
64 __result.__set(__i, __v);
65 }
66 return __result;
67 }
68
69 template <class _Generator, size_t... _Is>
70 static _LIBCPP_HIDE_FROM_ABI _SimdStorage __generate_init(_Generator&& __g, std::index_sequence<_Is...>) {
71 return _SimdStorage{{__g(std::integral_constant<size_t, _Is>())...}};
72 }
73
74 template <class _Generator>
75 static _LIBCPP_HIDE_FROM_ABI _SimdStorage __generate(_Generator&& __g) noexcept {
76 return __generate_init(std::forward<_Generator>(__g), std::make_index_sequence<_Np>());
77 }
78
79 template <class _Up>
80 static _LIBCPP_HIDE_FROM_ABI void __load(_SimdStorage& __s, const _Up* __mem) noexcept {
81 for (size_t __i = 0; __i < _Np; __i++)
82 __s.__data[__i] = static_cast<_Tp>(__mem[__i]);
83 }
84
85 template <class _Up>
86 static _LIBCPP_HIDE_FROM_ABI void __store(_SimdStorage __s, _Up* __mem) noexcept {
87 for (size_t __i = 0; __i < _Np; __i++)
88 __mem[__i] = static_cast<_Up>(__s.__data[__i]);
89 }
90
91 static _LIBCPP_HIDE_FROM_ABI void __increment(_SimdStorage& __s) noexcept { __s.__data = __s.__data + 1; }
92
93 static _LIBCPP_HIDE_FROM_ABI void __decrement(_SimdStorage& __s) noexcept { __s.__data = __s.__data - 1; }
94
95 static _LIBCPP_HIDE_FROM_ABI _MaskStorage __negate(_SimdStorage __s) noexcept { return {!__s.__data}; }
96
97 static _LIBCPP_HIDE_FROM_ABI _SimdStorage __bitwise_not(_SimdStorage __s) noexcept { return {~__s.__data}; }
98
99 static _LIBCPP_HIDE_FROM_ABI _SimdStorage __unary_minus(_SimdStorage __s) noexcept { return {-__s.__data}; }
100};
101
102template <class _Tp, int _Np>
103struct __mask_operations<_Tp, simd_abi::__vec_ext<_Np>> {
104 using _MaskStorage _LIBCPP_NODEBUG = __mask_storage<_Tp, simd_abi::__vec_ext<_Np>>;
105
106 static _LIBCPP_HIDE_FROM_ABI _MaskStorage __broadcast(bool __v) noexcept {
107 _MaskStorage __result;
108 auto __all_bits_v = experimental::__set_all_bits<_Tp>(__v);
109 for (int __i = 0; __i < _Np; ++__i) {
110 __result.__set(__i, __all_bits_v);
111 }
112 return __result;
113 }
114
115 static _LIBCPP_HIDE_FROM_ABI void __load(_MaskStorage& __s, const bool* __mem) noexcept {
116 for (size_t __i = 0; __i < _Np; __i++)
117 __s.__data[__i] = experimental::__set_all_bits<_Tp>(__mem[__i]);
118 }
119
120 static _LIBCPP_HIDE_FROM_ABI void __store(_MaskStorage __s, bool* __mem) noexcept {
121 for (size_t __i = 0; __i < _Np; __i++)
122 __mem[__i] = static_cast<bool>(__s.__data[__i]);
123 }
124};
125
126} // namespace parallelism_v2
127_LIBCPP_END_NAMESPACE_EXPERIMENTAL
128
129#endif // _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
130#endif // _LIBCPP_EXPERIMENTAL___SIMD_VEC_EXT_H
131

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source code of libcxx/include/experimental/__simd/vec_ext.h