_mm_maskz_shufflelo_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPSHUFLW xmm {z}, xmm, imm8
Synopsis
_mm_maskz_shufflelo_epi16(__mmask8 k, __m128i a, int imm8);
Description
Shuffle 16-bit integers in the low 64 bits of "a" using the control in "imm8". Store the results in the low 64 bits of "dst", with the high 64 bits being copied from from "a" to "dst", using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
tmp_dst[15:0] := (a >> (imm8[1:0] * 16))[15:0]
tmp_dst[31:16] := (a >> (imm8[3:2] * 16))[15:0]
tmp_dst[47:32] := (a >> (imm8[5:4] * 16))[15:0]
tmp_dst[63:48] := (a >> (imm8[7:6] * 16))[15:0]
tmp_dst[127:64] := a[127:64]
FOR j := 0 to 7
i := j*16
IF k[j]
dst[i+15:i] := tmp_dst[i+15:i]
ELSE
dst[i+15:i] := 0
FI
ENDFOR
dst[MAX:128] := 0