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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.traits]
// template <class T, class U = typename T::value_type> struct memory_alignment;
// template <class T, class U = typename T::value_type>
// inline constexpr std::size_t memory_alignment_v = memory_alignment<T, U>::value;
#include "../test_utils.h"
namespace ex = std::experimental::parallelism_v2;
template <class T, std::size_t N>
struct CheckMemoryAlignmentMask {
template <class SimdAbi>
void operator()() {
LIBCPP_STATIC_ASSERT(
ex::memory_alignment<ex::simd_mask<T, SimdAbi>>::value == bit_ceil(sizeof(bool) * ex::simd_size_v<T, SimdAbi>));
LIBCPP_STATIC_ASSERT(
ex::memory_alignment_v<ex::simd_mask<T, SimdAbi>> == bit_ceil(sizeof(bool) * ex::simd_size_v<T, SimdAbi>));
}
};
template <class T, std::size_t N>
struct CheckMemoryAlignmentLongDouble {
template <class SimdAbi>
void operator()() {
if constexpr (std::is_same_v<T, long double>) {
// on i686-w64-mingw32-clang++, the size of long double is 12 bytes. Disambiguation is needed.
static_assert(
ex::memory_alignment<ex::simd<T, SimdAbi>>::value == bit_ceil(sizeof(T) * ex::simd_size_v<T, SimdAbi>));
static_assert(ex::memory_alignment_v<ex::simd<T, SimdAbi>> == bit_ceil(sizeof(T) * ex::simd_size_v<T, SimdAbi>));
}
}
};
struct CheckMemAlignmentFixedDeduce {
template <class T, std::size_t N>
void check() {
if constexpr (!std::is_same_v<T, long double>) {
static_assert(ex::memory_alignment_v<ex::simd<T, ex::simd_abi::fixed_size<N>>> == sizeof(T) * bit_ceil(N),
"Memory Alignment mismatch with abi fixed_size");
static_assert(ex::memory_alignment<ex::simd<T, ex::simd_abi::fixed_size<N>>>::value == sizeof(T) * bit_ceil(N),
"Memory Alignment mismatch with abi fixed_size");
static_assert(ex::memory_alignment_v<ex::simd<T, ex::simd_abi::deduce_t<T, N>>> == sizeof(T) * bit_ceil(N),
"Memory Alignment mismatch with abi deduce");
static_assert(ex::memory_alignment<ex::simd<T, ex::simd_abi::deduce_t<T, N>>>::value == sizeof(T) * bit_ceil(N),
"Memory Alignment mismatch with abi deduce");
}
}
template <class T, std::size_t... N>
void performChecks(std::index_sequence<N...>) {
(check<T, N + 1>(), ...);
}
template <class T>
void operator()() {
performChecks<T>(std::make_index_sequence<max_simd_size>{});
}
};
struct CheckMemAlignmentScalarNativeCompatible {
template <class T>
void operator()() {
if constexpr (!std::is_same_v<T, long double>) {
static_assert(ex::memory_alignment<ex::simd<T, ex::simd_abi::scalar>>::value == sizeof(T));
static_assert(ex::memory_alignment_v<ex::simd<T, ex::simd_abi::scalar>> == sizeof(T));
LIBCPP_STATIC_ASSERT(ex::memory_alignment<ex::simd<T, ex::simd_abi::compatible<T>>>::value == 16);
LIBCPP_STATIC_ASSERT(ex::memory_alignment_v<ex::simd<T, ex::simd_abi::compatible<T>>> == 16);
LIBCPP_STATIC_ASSERT(
ex::memory_alignment<ex::simd<T, ex::simd_abi::native<T>>>::value == _LIBCPP_NATIVE_SIMD_WIDTH_IN_BYTES);
LIBCPP_STATIC_ASSERT(
ex::memory_alignment_v<ex::simd<T, ex::simd_abi::native<T>>> == _LIBCPP_NATIVE_SIMD_WIDTH_IN_BYTES);
}
}
};
template <class T, class U = typename T::value_type, class = void>
struct has_memory_alignment : std::false_type {};
template <class T, class U>
struct has_memory_alignment<T, U, std::void_t<decltype(ex::memory_alignment<T, U>::value)>> : std::true_type {};
struct CheckMemoryAlignmentTraits {
template <class T>
void operator()() {
static_assert(has_memory_alignment<ex::native_simd<T>>::value);
static_assert(has_memory_alignment<ex::fixed_size_simd_mask<T, 4>>::value);
static_assert(has_memory_alignment<ex::native_simd<T>, T>::value);
static_assert(has_memory_alignment<ex::fixed_size_simd_mask<T, 4>, bool>::value);
static_assert(!has_memory_alignment<T, T>::value);
static_assert(!has_memory_alignment<T, bool>::value);
static_assert(!has_memory_alignment<ex::native_simd<T>, bool>::value);
static_assert(!has_memory_alignment<ex::fixed_size_simd_mask<T, 4>, T>::value);
}
};
int main(int, char**) {
types::for_each(arithmetic_no_bool_types(), CheckMemAlignmentFixedDeduce());
types::for_each(arithmetic_no_bool_types(), CheckMemAlignmentScalarNativeCompatible());
test_all_simd_abi<CheckMemoryAlignmentMask>();
test_all_simd_abi<CheckMemoryAlignmentLongDouble>();
types::for_each(arithmetic_no_bool_types(), CheckMemoryAlignmentTraits());
return 0;
}
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