1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_EXPERIMENTAL___SIMD_UTILITY_H
#define _LIBCPP_EXPERIMENTAL___SIMD_UTILITY_H
#include <__type_traits/is_arithmetic.h>
#include <__type_traits/is_const.h>
#include <__type_traits/is_constant_evaluated.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_same.h>
#include <__type_traits/is_unsigned.h>
#include <__type_traits/is_volatile.h>
#include <__type_traits/void_t.h>
#include <__utility/declval.h>
#include <cstdint>
#include <limits>
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
#if _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
inline namespace parallelism_v2 {
template <class _Tp>
inline constexpr bool __is_vectorizable_v =
is_arithmetic_v<_Tp> && !is_const_v<_Tp> && !is_volatile_v<_Tp> && !is_same_v<_Tp, bool>;
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI auto __choose_mask_type() {
if constexpr (sizeof(_Tp) == 1) {
return uint8_t{};
} else if constexpr (sizeof(_Tp) == 2) {
return uint16_t{};
} else if constexpr (sizeof(_Tp) == 4) {
return uint32_t{};
} else if constexpr (sizeof(_Tp) == 8) {
return uint64_t{};
}
# ifndef _LIBCPP_HAS_NO_INT128
else if constexpr (sizeof(_Tp) == 16) {
return __uint128_t{};
}
# endif
else
static_assert(sizeof(_Tp) == 0, "Unexpected size");
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI auto constexpr __set_all_bits(bool __v) {
return __v ? (numeric_limits<decltype(__choose_mask_type<_Tp>())>::max()) : 0;
}
template <class _From, class _To, class = void>
inline constexpr bool __is_non_narrowing_convertible_v = false;
template <class _From, class _To>
inline constexpr bool __is_non_narrowing_convertible_v<_From, _To, std::void_t<decltype(_To{std::declval<_From>()})>> =
true;
template <class _Tp, class _Up>
inline constexpr bool __can_broadcast_v =
(__is_vectorizable_v<_Up> && __is_non_narrowing_convertible_v<_Up, _Tp>) ||
(!__is_vectorizable_v<_Up> && is_convertible_v<_Up, _Tp>) || is_same_v<_Up, int> ||
(is_same_v<_Up, unsigned int> && is_unsigned_v<_Tp>);
} // namespace parallelism_v2
_LIBCPP_END_NAMESPACE_EXPERIMENTAL
#endif // _LIBCPP_STD_VER >= 17 && defined(_LIBCPP_ENABLE_EXPERIMENTAL)
_LIBCPP_POP_MACROS
#endif // _LIBCPP_EXPERIMENTAL___SIMD_UTILITY_H
|
