_mm_maskz_permute_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VPERMILPD xmm {z}, xmm, imm8
Synopsis
 _mm_maskz_permute_pd(__mmask8 k, __m128d a, const int imm8);
Description
Shuffle double-precision (64-bit) floating-point elements in "a" using the control in "imm8", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
IF (imm8[0] == 0) tmp_dst[63:0] := a[63:0]; FI
IF (imm8[0] == 1) tmp_dst[63:0] := a[127:64]; FI
IF (imm8[1] == 0) tmp_dst[127:64] := a[63:0]; FI
IF (imm8[1] == 1) tmp_dst[127:64] := a[127:64]; FI
FOR j := 0 to 1
	i := j*64
	IF k[j]
		dst[i+63:i] := tmp_dst[i+63:i]
	ELSE
		dst[i+63:i] := 0
	FI
ENDFOR
dst[MAX:128] := 0