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

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