_mm256_mask_shrdv_epi32
Classification
AVX-512, Shift, CPUID Test: AVX512_VBMI2
Header File
Instruction
VPSHRDVD ymm {k}, ymm, ymm
Synopsis
_mm256_mask_shrdv_epi32(__m256i a, __mmask8 k, __m256i b, __m256i c);
Description
Concatenate packed 32-bit integers in "b" and "a" producing an intermediate 64-bit result. Shift the result right by the amount specified in the corresponding element of "c", and store the lower 32-bits in "dst" using writemask "k" (elements are copied from "a" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 7
i := j*32
IF k[j]
dst[i+31:i] := ((b[i+31:i] << 32)[63:0] | a[i+31:i]) >> (c[i+31:i] & 31)
ELSE
dst[i+31:i] := a[i+31:i]
FI
ENDFOR
dst[MAX:256] := 0