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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// <experimental/simd>
//
// [simd.class]
// simd() noexcept = default;
#include "../test_utils.h"
#include <experimental/simd>
namespace ex = std::experimental::parallelism_v2;
// See https://www.open-std.org/jtc1/sc22/WG21/docs/papers/2019/n4808.pdf
// Default initialization performs no initialization of the elements; value-initialization initializes each element with T().
// Thus, default initialization leaves the elements in an indeterminate state.
template <class T, std::size_t>
struct CheckSimdDefaultCtor {
template <class SimdAbi>
void operator()() {
static_assert(std::is_nothrow_default_constructible_v<ex::simd<T, SimdAbi>>);
ex::simd<T, SimdAbi> pure_simd;
// trash value in default ctor
static_assert(pure_simd.size() > 0);
}
};
template <class T, std::size_t>
struct CheckSimdDefaultCopyCtor {
template <class SimdAbi>
void operator()() {
ex::simd<T, SimdAbi> pure_simd([](T i) { return i; });
constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
std::array<T, array_size> expected_value;
for (size_t i = 0; i < array_size; ++i)
expected_value[i] = pure_simd[i];
static_assert(std::is_nothrow_copy_constructible_v<ex::simd<T, SimdAbi>>);
ex::simd<T, SimdAbi> from_copy_ctor(pure_simd);
assert_simd_values_equal<array_size>(from_copy_ctor, expected_value);
}
};
template <class T, std::size_t>
struct CheckSimdDefaultMoveCtor {
template <class SimdAbi>
void operator()() {
ex::simd<T, SimdAbi> pure_simd([](T i) { return i; });
constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
std::array<T, array_size> expected_value;
for (size_t i = 0; i < array_size; ++i)
expected_value[i] = pure_simd[i];
static_assert(std::is_nothrow_move_constructible_v<ex::simd<T, SimdAbi>>);
ex::simd<T, SimdAbi> from_move_ctor(std::move(pure_simd));
assert_simd_values_equal<array_size>(from_move_ctor, expected_value);
}
};
template <class T, std::size_t>
struct CheckSimdDefaultCopyAssignment {
template <class SimdAbi>
void operator()() {
ex::simd<T, SimdAbi> pure_simd([](T i) { return i; });
constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
std::array<T, array_size> expected_value;
for (size_t i = 0; i < array_size; ++i)
expected_value[i] = pure_simd[i];
static_assert(std::is_nothrow_copy_assignable_v<ex::simd<T, SimdAbi>>);
ex::simd<T, SimdAbi> from_copy_assignment;
from_copy_assignment = pure_simd;
assert_simd_values_equal<array_size>(from_copy_assignment, expected_value);
}
};
template <class T, std::size_t>
struct CheckSimdDefaultMoveAssignment {
template <class SimdAbi>
void operator()() {
ex::simd<T, SimdAbi> pure_simd([](T i) { return i; });
constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
std::array<T, array_size> expected_value;
for (size_t i = 0; i < array_size; ++i)
expected_value[i] = pure_simd[i];
static_assert(std::is_nothrow_move_assignable_v<ex::simd<T, SimdAbi>>);
ex::simd<T, SimdAbi> from_move_assignment;
from_move_assignment = std::move(pure_simd);
assert_simd_values_equal<array_size>(from_move_assignment, expected_value);
}
};
int main(int, char**) {
test_all_simd_abi<CheckSimdDefaultCtor>();
test_all_simd_abi<CheckSimdDefaultCopyCtor>();
test_all_simd_abi<CheckSimdDefaultMoveCtor>();
test_all_simd_abi<CheckSimdDefaultCopyAssignment>();
test_all_simd_abi<CheckSimdDefaultMoveAssignment>();
return 0;
}
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