Function `_mm_alignr_epi8`

#[target_feature(enable = "ssse3")]
pub const fn _mm_alignr_epi8(a: __m128i, b: __m128i, IMM8: i32) -> __m128i

Concatenate 16-byte blocks in a and b into a 32-byte temporary result, shift the result right by n bytes, and returns the low 16 bytes.