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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
// Older versions of clang may encounter a backend error (see 0295c2ad):
// Pass-by-value arguments with alignment greater than register width are not supported.
// XFAIL: target=powerpc{{.*}}-ibm-{{.*}} && (clang-17 || clang-18)
// <experimental/simd>
//
// [simd.class]
// template<class U, class Flags> void copy_from(const U* mem, Flags);
// template<class U, class Flags> void copy_to(U* mem, Flags) const;
#include "../test_utils.h"
namespace ex = std::experimental::parallelism_v2;
template <class T, class SimdAbi, std::size_t array_size>
struct ElementAlignedCopyFromHelper {
template <class U>
void operator()() const {
U buffer[array_size];
for (size_t i = 0; i < array_size; ++i)
buffer[i] = static_cast<U>(i);
ex::simd<T, SimdAbi> origin_simd;
origin_simd.copy_from(buffer, ex::element_aligned_tag());
assert_simd_values_equal(origin_simd, buffer);
}
};
template <class T, class SimdAbi, std::size_t array_size>
struct VectorAlignedCopyFromHelper {
template <class U>
void operator()() const {
alignas(ex::memory_alignment_v<ex::simd<T, SimdAbi>, U>) U buffer[array_size];
for (size_t i = 0; i < array_size; ++i)
buffer[i] = static_cast<U>(i);
ex::simd<T, SimdAbi> origin_simd;
origin_simd.copy_from(buffer, ex::vector_aligned_tag());
assert_simd_values_equal(origin_simd, buffer);
}
};
template <class T, class SimdAbi, std::size_t array_size>
struct OveralignedCopyFromHelper {
template <class U>
void operator()() const {
alignas(bit_ceil(sizeof(U) + 1)) U buffer[array_size];
for (size_t i = 0; i < array_size; ++i)
buffer[i] = static_cast<U>(i);
ex::simd<T, SimdAbi> origin_simd;
origin_simd.copy_from(buffer, ex::overaligned_tag<bit_ceil(sizeof(U) + 1)>());
assert_simd_values_equal(origin_simd, buffer);
}
};
template <class T, std::size_t>
struct CheckSimdCopyFrom {
template <class SimdAbi>
void operator()() {
constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
types::for_each(simd_test_types(), ElementAlignedCopyFromHelper<T, SimdAbi, array_size>());
types::for_each(simd_test_types(), VectorAlignedCopyFromHelper<T, SimdAbi, array_size>());
types::for_each(simd_test_types(), OveralignedCopyFromHelper<T, SimdAbi, array_size>());
}
};
template <class T, class SimdAbi, std::size_t array_size>
struct ElementAlignedCopyToHelper {
template <class U>
void operator()() const {
U buffer[array_size];
ex::simd<T, SimdAbi> origin_simd([](T i) { return i; });
origin_simd.copy_to(buffer, ex::element_aligned_tag());
assert_simd_values_equal(origin_simd, buffer);
}
};
template <class T, class SimdAbi, std::size_t array_size>
struct VectorAlignedCopyToHelper {
template <class U>
void operator()() const {
alignas(ex::memory_alignment_v<ex::simd<T, SimdAbi>, U>) U buffer[array_size];
ex::simd<T, SimdAbi> origin_simd([](T i) { return i; });
origin_simd.copy_to(buffer, ex::vector_aligned_tag());
assert_simd_values_equal(origin_simd, buffer);
}
};
template <class T, class SimdAbi, std::size_t array_size>
struct OveralignedCopyToHelper {
template <class U>
void operator()() const {
alignas(bit_ceil(sizeof(U) + 1)) U buffer[array_size];
ex::simd<T, SimdAbi> origin_simd([](T i) { return i; });
origin_simd.copy_to(buffer, ex::overaligned_tag<bit_ceil(sizeof(U) + 1)>());
assert_simd_values_equal(origin_simd, buffer);
}
};
template <class T, std::size_t>
struct CheckSimdCopyTo {
template <class SimdAbi>
void operator()() {
constexpr std::size_t array_size = ex::simd_size_v<T, SimdAbi>;
types::for_each(simd_test_types(), ElementAlignedCopyToHelper<T, SimdAbi, array_size>());
types::for_each(simd_test_types(), VectorAlignedCopyToHelper<T, SimdAbi, array_size>());
types::for_each(simd_test_types(), OveralignedCopyToHelper<T, SimdAbi, array_size>());
}
};
template <class U, class T, class Flags, class SimdAbi = ex::simd_abi::compatible<T>, class = void>
struct has_copy_from : std::false_type {};
template <class U, class T, class Flags, class SimdAbi>
struct has_copy_from<U,
T,
Flags,
SimdAbi,
std::void_t<decltype(std::declval<ex::simd<T, SimdAbi>>().copy_from(
std::declval<const U*>(), std::declval<Flags>()))>> : std::true_type {};
template <class U, class T, class Flags, class SimdAbi = ex::simd_abi::compatible<T>, class = void>
struct has_copy_to : std::false_type {};
template <class U, class T, class Flags, class SimdAbi>
struct has_copy_to<
U,
T,
Flags,
SimdAbi,
std::void_t<decltype(std::declval<ex::simd<T, SimdAbi>>().copy_to(std::declval<U*>(), std::declval<Flags>()))>>
: std::true_type {};
template <class T, std::size_t>
struct CheckSimdCopyTraits {
template <class SimdAbi>
void operator()() {
// These functions shall not participate in overload resolution unless
// is_simd_flag_type_v<Flags> is true, and
// U is a vectorizable type.
static_assert(has_copy_from<int, T, ex::element_aligned_tag, SimdAbi>::value);
static_assert(has_copy_to<int, T, ex::element_aligned_tag, SimdAbi>::value);
// is_simd_flag_type_v<Flags> is false
static_assert(!has_copy_from<int, T, T, SimdAbi>::value);
static_assert(!has_copy_to<int, T, T, SimdAbi>::value);
static_assert(!has_copy_from<int, T, SimdAbi, SimdAbi>::value);
static_assert(!has_copy_to<int, T, SimdAbi, SimdAbi>::value);
// U is not a vectorizable type.
static_assert(!has_copy_from<SimdAbi, T, ex::element_aligned_tag, SimdAbi>::value);
static_assert(!has_copy_to<SimdAbi, T, ex::element_aligned_tag, SimdAbi>::value);
static_assert(!has_copy_from<ex::element_aligned_tag, T, ex::element_aligned_tag, SimdAbi>::value);
static_assert(!has_copy_to<ex::element_aligned_tag, T, ex::element_aligned_tag, SimdAbi>::value);
}
};
int main(int, char**) {
test_all_simd_abi<CheckSimdCopyFrom>();
test_all_simd_abi<CheckSimdCopyTo>();
test_all_simd_abi<CheckSimdCopyTraits>();
return 0;
}
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