_mm_maskz_movedup_pd
Classification
Header File
Instruction
VMOVDDUP xmm {z}, xmm
Synopsis
_mm_maskz_movedup_pd(__mmask8 k, __m128d a);
Description
Duplicate even-indexed double-precision (64-bit) floating-point elements from "a", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
tmp[63:0] := a[63:0]
tmp[127:64] := a[63:0]
FOR j := 0 to 1
i := j*64
IF k[j]
dst[i+63:i] := tmp[i+63:i]
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:128] := 0