1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LIBCXX_TEST_STD_EXPERIMENTAL_SIMD_TEST_UTILS_H
10#define LIBCXX_TEST_STD_EXPERIMENTAL_SIMD_TEST_UTILS_H
11
12#include <array>
13#include <cassert>
14#include <cstddef>
15#include <experimental/simd>
16#include <type_traits>
17#include <utility>
18
19#include "type_algorithms.h"
20
21namespace ex = std::experimental::parallelism_v2;
22
23constexpr std::size_t max_simd_size = 32;
24
25template <template <class T, std::size_t N> class F>
26struct TestAllSimdAbiFunctor {
27 template <class T, std::size_t N>
28 using sized_abis = types::type_list<ex::simd_abi::fixed_size<N>, ex::simd_abi::deduce_t<T, N>>;
29
30 template <class T, std::size_t... Ns>
31 void instantiate_with_n(std::index_sequence<Ns...>) {
32 (types::for_each(sized_abis<T, Ns>{}, F<T, Ns>{}), ...);
33 }
34
35 template <class T>
36 void operator()() {
37 using abis = types::type_list<ex::simd_abi::scalar, ex::simd_abi::native<T>, ex::simd_abi::compatible<T>>;
38 types::for_each(abis{}, F<T, 1>());
39
40 instantiate_with_n<T>(
41 std::index_sequence<1, 2, 3, 4, 8, 16, max_simd_size - 2, max_simd_size - 1, max_simd_size>{});
42 }
43};
44
45// TODO: Support long double (12 bytes) for 32-bits x86
46#ifdef __i386__
47using arithmetic_no_bool_types = types::concatenate_t<types::integer_types, types::type_list<float, double>>;
48#else
49using arithmetic_no_bool_types = types::concatenate_t<types::integer_types, types::floating_point_types>;
50#endif
51
52// For interfaces with vectorizable type template parameters, we only use some common or boundary types
53// as template parameters for testing to ensure that the compilation time of a single test does not exceed.
54using simd_test_integer_types =
55 types::type_list<char,
56 unsigned,
57 int
58#ifndef TEST_HAS_NO_INT128
59 ,
60 __int128_t
61#endif
62 >;
63using simd_test_types = types::concatenate_t<simd_test_integer_types, types::type_list<float, double>>;
64
65template <template <class T, std::size_t N> class Func>
66void test_all_simd_abi() {
67 types::for_each(arithmetic_no_bool_types(), TestAllSimdAbiFunctor<Func>());
68}
69
70constexpr size_t bit_ceil(size_t val) {
71 size_t pow = 1;
72 while (pow < val)
73 pow <<= 1;
74 return pow;
75}
76
77template <class From, class To, class = void>
78inline constexpr bool is_non_narrowing_convertible_v = false;
79
80template <class From, class To>
81inline constexpr bool is_non_narrowing_convertible_v<From, To, std::void_t<decltype(To{std::declval<From>()})>> = true;
82
83template <std::size_t ArraySize, class SimdAbi, class T, class U = T>
84void assert_simd_values_equal(const ex::simd<T, SimdAbi>& origin_simd, const std::array<U, ArraySize>& expected_value) {
85 for (std::size_t i = 0; i < origin_simd.size(); ++i)
86 assert(origin_simd[i] == static_cast<T>(expected_value[i]));
87}
88
89template <std::size_t ArraySize, class T, class SimdAbi>
90void assert_simd_mask_values_equal(const ex::simd_mask<T, SimdAbi>& origin_mask,
91 const std::array<bool, ArraySize>& expected_value) {
92 for (std::size_t i = 0; i < origin_mask.size(); ++i)
93 assert(origin_mask[i] == expected_value[i]);
94}
95
96template <class SimdAbi, class T, class U = T>
97void assert_simd_values_equal(const ex::simd<T, SimdAbi>& origin_simd, U* expected_value) {
98 for (size_t i = 0; i < origin_simd.size(); ++i)
99 assert(origin_simd[i] == static_cast<T>(expected_value[i]));
100}
101
102template <class SimdAbi, class T>
103void assert_simd_mask_values_equal(const ex::simd_mask<T, SimdAbi>& origin_mask, bool* expected_value) {
104 for (size_t i = 0; i < origin_mask.size(); ++i)
105 assert(origin_mask[i] == expected_value[i]);
106}
107
108#endif // LIBCXX_TEST_STD_EXPERIMENTAL_SIMD_TEST_UTILS_H
109

source code of libcxx/test/std/experimental/simd/test_utils.h