_mm_mask_movedup_pd
Classification
AVX-512, Move, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VMOVDDUP xmm {k}, xmm
Synopsis
 _mm_mask_movedup_pd(__m128d src, __mmask8 k, __m128d 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]
FOR j := 0 to 1
	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:128] := 0