16 #include <type_traits>
24 namespace seqan3::detail
52 template <
typename scalar_t,
size_t length>
57 template <
typename scalar_t,
size_t length>
59 requires (is_power_of_two(length))
61 struct 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;
78 template <
typename builtin_simd_t>
86 template <
typename builtin_simd_t>
95 struct builtin_simd_traits_helper<builtin_simd_t>
100 static constexpr
auto length = min_viable_uint_v<
sizeof(builtin_simd_t) /
sizeof(scalar_type)>;
104 static constexpr
bool value = is_power_of_two(length) &&
106 transformation_trait_or_t<builtin_simd<scalar_type, length>,
void>>;
117 template <
typename builtin_simd_t>
118 struct is_builtin_simd :
std::bool_constant<builtin_simd_traits_helper<builtin_simd_t>::value>
126 template <
typename builtin_simd_t>
127 constexpr
bool is_builtin_simd_v = is_builtin_simd<builtin_simd_t>::value;
138 constexpr
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>;
163 template <
typename builtin_simd_t>
164 struct 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)>
178 template <
typename builtin_simd_t>
179 constexpr
bool is_native_builtin_simd_v = is_native_builtin_simd<builtin_simd_t>::value;
186 inline namespace simd
194 template <
typename builtin_simd_t>
196 requires detail::is_builtin_simd<builtin_simd_t>::value
198 struct 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;