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// UNSUPPORTED: c++03, c++11, c++14
10
11// <experimental/simd>
12//
13// [simd.class]
14// template<class Flags> simd_mask(const value_type* mem, Flags);
15
16#include "../test_utils.h"
17
18namespace ex = std::experimental::parallelism_v2;
19
20template <class T, std::size_t>
21struct CheckSimdMaskLoadCtor {
22 template <class SimdAbi>
23 void operator()() {
24 constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
25
26 // element aligned tag
27 bool element_buffer[array_size];
28 for (size_t i = 0; i < array_size; ++i)
29 element_buffer[i] = static_cast<bool>(i % 2);
30 ex::simd_mask<T, SimdAbi> element_mask(element_buffer, ex::element_aligned_tag());
31 assert_simd_mask_values_equal(element_mask, element_buffer);
32
33 // vector aligned tag
34 alignas(ex::memory_alignment_v<ex::simd_mask<T, SimdAbi>>) bool vector_buffer[array_size];
35 for (size_t i = 0; i < array_size; ++i)
36 vector_buffer[i] = static_cast<bool>(i % 2);
37 ex::simd_mask<T, SimdAbi> vector_mask(vector_buffer, ex::vector_aligned_tag());
38 assert_simd_mask_values_equal(vector_mask, vector_buffer);
39
40 // overaligned tag
41 alignas(bit_ceil(val: sizeof(bool) + 1)) bool overaligned_buffer[array_size];
42 for (size_t i = 0; i < array_size; ++i)
43 overaligned_buffer[i] = static_cast<bool>(i % 2);
44 ex::simd_mask<T, SimdAbi> overaligned_mask(overaligned_buffer, ex::overaligned_tag<bit_ceil(val: sizeof(bool) + 1)>());
45 assert_simd_mask_values_equal(overaligned_mask, overaligned_buffer);
46 }
47};
48
49template <class T, std::size_t>
50struct CheckMaskLoadCtorTraits {
51 template <class SimdAbi>
52 void operator()() {
53 // This function shall not participate in overload resolution unless
54 // is_simd_flag_type_v<Flags> is true
55 static_assert(std::is_constructible_v<ex::simd_mask<T, SimdAbi>, const bool*, ex::element_aligned_tag>);
56
57 // is_simd_flag_type_v<Flags> is false
58 static_assert(!std::is_constructible_v<ex::simd_mask<T, SimdAbi>, const bool*, T>);
59 static_assert(!std::is_constructible_v<ex::simd_mask<T, SimdAbi>, const bool*, SimdAbi>);
60 }
61};
62
63int main(int, char**) {
64 test_all_simd_abi<CheckSimdMaskLoadCtor>();
65 test_all_simd_abi<CheckMaskLoadCtorTraits>();
66 return 0;
67}
68

source code of libcxx/test/std/experimental/simd/simd.mask.class/simd_mask_ctor_load.pass.cpp