_mm256_maskz_movedup_pd
Classification
AVX-512, Move, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VMOVDDUP ymm {z}, ymm
Synopsis
 _mm256_maskz_movedup_pd(__mmask8 k, __m256d 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]
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] := 0
	FI
ENDFOR
dst[MAX:256] := 0