#[repr(simd)]pub struct __m256i(_, _, _, _);
Available on x86-64 and (x86 or x86-64) only.
256-bit wide integer vector type, x86-specific
This type is the same as the
__m256i type defined by Intel,
representing a 256-bit SIMD register. Usage of this type typically
corresponds to the
avx and up target features for x86/x86_64.
Internally this type may be viewed as:
i8x32- thirty two
i8variables packed together
i16variables packed together
i32variables packed together
i64variables packed together
(as well as unsigned versions). Each intrinsic may interpret the internal bits differently, check the documentation of the intrinsic to see how it’s being used.
Note that this means that an instance of
__m256i typically just means
a “bag of bits” which is left up to interpretation at the point of use.
#[cfg(target_arch = "x86")] use std::arch::x86::*; #[cfg(target_arch = "x86_64")] use std::arch::x86_64::*; let all_bytes_zero = _mm256_setzero_si256(); let all_bytes_one = _mm256_set1_epi8(1); let eight_i32 = _mm256_set_epi32(1, 2, 3, 4, 5, 6, 7, 8);