_mm_mask_permute_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VPERMILPD xmm {k}, xmm, imm8
Synopsis
 _mm_mask_permute_pd(__m128d src, __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 writemask "k" (elements are copied from "src" 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] := src[i+63:i]
	FI
ENDFOR
dst[MAX:128] := 0