core::arch::x86

Function _mm_mask_shldv_epi64

Source 
pub unsafe fn _mm_mask_shldv_epi64(
    a: __m128i,
    k: __mmask8,
    b: __m128i,
    c: __m128i,
) -> __m128i
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature avx512vbmi2,avx512vl and x86 only.
Expand description

Concatenate packed 64-bit integers in a and b producing an intermediate 128-bit result. Shift the result left by the amount specified in the corresponding element of c, and store the upper 64-bits in dst using writemask k (elements are copied from a when the corresponding mask bit is not set).

Intel’s documentation