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// The machine emulated in tests does not have enough memory for code.
12// UNSUPPORTED: LIBCXX-PICOLIBC-FIXME
13
14// <experimental/simd>
15//
16// [simd.reference]
17// template<class U> reference=(U&& x) && noexcept;
18// XFAIL: target=powerpc{{.*}}le-unknown-linux-gnu
19
20#include "../test_utils.h"
21#include <experimental/simd>
22
23namespace ex = std::experimental::parallelism_v2;
24
25template <class T, class SimdAbi>
26struct CheckSimdReferenceAssignmentHelper {
27 template <class U>
28 void operator()() const {
29 if constexpr (std::is_assignable_v<T&, U&&>) {
30 ex::simd<T, SimdAbi> origin_simd([](T i) { return i; });
31 for (size_t i = 0; i < origin_simd.size(); ++i) {
32 static_assert(noexcept(origin_simd[i] = static_cast<U>(i + 1)));
33 origin_simd[i] = static_cast<U>(i + 1);
34 assert(origin_simd[i] == static_cast<T>(std::forward<U>(i + 1)));
35 }
36 }
37 }
38};
39
40template <class T, class SimdAbi>
41struct CheckMaskReferenceAssignmentHelper {
42 template <class U>
43 void operator()() const {
44 if constexpr (std::is_assignable_v<bool&, U&&>) {
45 ex::simd_mask<T, SimdAbi> origin_mask(true);
46 for (size_t i = 0; i < origin_mask.size(); ++i) {
47 static_assert(noexcept(origin_mask[i] = static_cast<U>(i + 1)));
48 origin_mask[i] = static_cast<U>(i % 2);
49 assert(origin_mask[i] == static_cast<T>(std::forward<U>(i % 2)));
50 }
51 }
52 }
53};
54
55template <class T, class SimdAbi>
56struct CheckReferenceAssignmentTraitsHelper {
57 template <class U>
58 void operator()() const {
59 if constexpr (std::is_assignable_v<T&, U&&>)
60 static_assert(std::is_assignable_v<typename ex::simd<T, SimdAbi>::reference&&, U&&>);
61 else
62 static_assert(!std::is_assignable_v<typename ex::simd<T, SimdAbi>::reference&&, U&&>);
63
64 if constexpr (std::is_assignable_v<bool&, U&&>)
65 static_assert(std::is_assignable_v<typename ex::simd_mask<T, SimdAbi>::reference&&, U&&>);
66 else
67 static_assert(!std::is_assignable_v<typename ex::simd_mask<T, SimdAbi>::reference&&, U&&>);
68 }
69};
70
71template <class T, std::size_t>
72struct CheckReferenceAssignment {
73 template <class SimdAbi>
74 void operator()() {
75 types::for_each(simd_test_types(), CheckSimdReferenceAssignmentHelper<T, SimdAbi>());
76 types::for_each(simd_test_types(), CheckMaskReferenceAssignmentHelper<T, SimdAbi>());
77
78 types::for_each(simd_test_types(), CheckReferenceAssignmentTraitsHelper<T, SimdAbi>());
79 }
80};
81
82int main(int, char**) {
83 test_all_simd_abi<CheckReferenceAssignment>();
84 return 0;
85}
86

source code of libcxx/test/std/experimental/simd/simd.reference/reference_assignment.pass.cpp