_mm_mask_sllv_epi32
Classification
AVX-512, Shift, CPUID Test: AVX512F
Header File
Instruction
VPSLLVD xmm {k}, xmm, xmm
Synopsis
_mm_mask_sllv_epi32(__m128i src, __mmask8 k, __m128i a, __m128i count);
Description
Shift packed 32-bit integers in "a" left by the amount specified by the corresponding element in "count" while shifting in zeros, and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 3
i := j*32
IF k[j]
IF count[i+31:i] < 32
dst[i+31:i] := ZeroExtend32(a[i+31:i] << count[i+31:i])
ELSE
dst[i+31:i] := 0
FI
ELSE
dst[i+31:i] := src[i+31:i]
FI
ENDFOR
dst[MAX:128] := 0