_mm256_mask_shufflelo_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPSHUFLW ymm {k}, ymm, imm8
Synopsis
_mm256_mask_shufflelo_epi16(__m256i src, __mmask16 k, __m256i a, int imm8);
Description
Shuffle 16-bit integers in the low 64 bits of 128-bit lanes of "a" using the control in "imm8". Store the results in the low 64 bits of 128-bit lanes of "dst", with the high 64 bits of 128-bit lanes being copied from from "a" to "dst", using writemask "k" (elements are copied from "src" 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]
tmp_dst[143:128] := (a >> (imm8[1:0] * 16))[143:128]
tmp_dst[159:144] := (a >> (imm8[3:2] * 16))[143:128]
tmp_dst[175:160] := (a >> (imm8[5:4] * 16))[143:128]
tmp_dst[191:176] := (a >> (imm8[7:6] * 16))[143:128]
tmp_dst[255:192] := a[255:192]
FOR j := 0 to 15
i := j*16
IF k[j]
dst[i+15:i] := tmp_dst[i+15:i]
ELSE
dst[i+15:i] := src[i+15:i]
FI
ENDFOR
dst[MAX:256] := 0