24namespace seqan3::detail
52template <
typename scalar_t,
size_t length>
57template <
typename scalar_t,
size_t length>
61struct builtin_simd<scalar_t, length>
64#if SEQAN3_DOXYGEN_ONLY(1)0
65 using type = scalar_t __attribute__((vector_size(
sizeof(scalar_t) * length))));
67#elif defined(__clang__)
68 using type = scalar_t __attribute__((ext_vector_type(length)));
70 using type [[gnu::vector_size(
sizeof(scalar_t) * length)]] = scalar_t;
78template <
typename builtin_simd_t>
86template <
typename builtin_simd_t>
90 requires (!std::is_pointer_v<std::decay_t<builtin_simd_t>>) &&
requires(builtin_simd_t simd)
95struct builtin_simd_traits_helper<builtin_simd_t>
100 static constexpr auto length =
sizeof(builtin_simd_t) /
sizeof(scalar_type);
106 transformation_trait_or_t<builtin_simd<scalar_type, length>,
void>>;
117template <
typename builtin_simd_t>
118struct is_builtin_simd :
std::bool_constant<builtin_simd_traits_helper<builtin_simd_t>::value>
126template <
typename builtin_simd_t>
127constexpr bool is_builtin_simd_v = is_builtin_simd<builtin_simd_t>::value;
138constexpr auto default_simd_max_length<builtin_simd> = []()
140#if defined(__AVX512F__)
141 return min_viable_uint_v<64u>;
142#elif defined(__AVX2__)
143 return min_viable_uint_v<32u>;
144#elif defined(__SSE4_1__) && defined(__SSE4_2__)
145 return min_viable_uint_v<16u>;
147 return min_viable_uint_v<0u>;
163template <
typename builtin_simd_t>
164struct is_native_builtin_simd :
166 ((builtin_simd_traits_helper<builtin_simd_t>::length *
167 sizeof(typename builtin_simd_traits_helper<builtin_simd_t>::scalar_type)) >= 16) &&
168 ((builtin_simd_traits_helper<builtin_simd_t>::length *
169 sizeof(typename builtin_simd_traits_helper<builtin_simd_t>::scalar_type)) <= 64)>
178template <
typename builtin_simd_t>
179constexpr bool is_native_builtin_simd_v = is_native_builtin_simd<builtin_simd_t>::value;
194template <
typename builtin_simd_t>
196 requires detail::is_builtin_simd<builtin_simd_t>::value
198struct simd_traits<builtin_simd_t>
201 using scalar_type =
typename detail::builtin_simd_traits_helper<builtin_simd_t>::scalar_type;
203 static constexpr auto length = detail::builtin_simd_traits_helper<builtin_simd_t>::length;
205 static constexpr auto max_length = length == 1u ? length :
sizeof(scalar_type) * length;
207 static_assert(std::is_integral_v<scalar_type>,
"For now we assume that builtin simd can only be integers");
209 using mask_type =
decltype(std::declval<builtin_simd_t>() == std::declval<builtin_simd_t>());
211 using swizzle_type =
typename detail::builtin_simd<uint8_t, max_length>::type;
214 template <
typename new_scalar_type>
216 requires (
sizeof(scalar_type) ==
sizeof(new_scalar_type))
218 using rebind =
typename detail::builtin_simd<new_scalar_type, length>::type;
The <bit> header from C++20's standard library.
Provides seqan3::detail::default_simd_length and seqan3::detail::default_simd_max_length.
constexpr bool has_single_bit(T x) noexcept
Checks if x is an integral power of two.
Definition: bit:151
Provides metaprogramming utilities for integer types.
The main SeqAn3 namespace.
Definition: cigar_operation_table.hpp:2
Provides seqan3::simd::simd_traits.