Function core::arch::x86::_mm_srlv_epi64

pub unsafe fn _mm_srlv_epi64(a: __m128i, count: __m128i) -> __m128i

This is supported on x86 and target feature avx2 only.

Shifts packed 64-bit integers in a right by the amount specified by the corresponding element in count while shifting in zeros,

Intel’s documentation