_mm256_mask_movedup_pd
Classification
Header File
Instruction
VMOVDDUP ymm {k}, ymm
Synopsis
_mm256_mask_movedup_pd(__m256d src, __mmask8 k, __m256d a);
Description
Duplicate even-indexed double-precision (64-bit) floating-point elements from "a", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
tmp[63:0] := a[63:0]
tmp[127:64] := a[63:0]
tmp[191:128] := a[191:128]
tmp[255:192] := a[191:128]
FOR j := 0 to 3
i := j*64
IF k[j]
dst[i+63:i] := tmp[i+63:i]
ELSE
dst[i+63:i] := src[i+63:i]
FI
ENDFOR
dst[MAX:256] := 0