Function core::arch::x86::_mm_storel_epi64

pub unsafe fn _mm_storel_epi64(mem_addr: *mut __m128i, a: __m128i)

This is supported on x86 and target feature sse2 only.

Stores the lower 64-bit integer a to a memory location.

mem_addr does not need to be aligned on any particular boundary.

Intel's documentation