_mm_mask_unpacklo_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPUNPCKLWD xmm {k}, xmm, xmm
Synopsis
 _mm_mask_unpacklo_epi16(__m128i src, __mmask8 k, __m128i a, __m128i b);
Description
Unpack and interleave 16-bit integers from the low half of "a" and "b", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
DEFINE INTERLEAVE_WORDS(src1[127:0], src2[127:0]) {
	dst[15:0] := src1[15:0] 
	dst[31:16] := src2[15:0] 
	dst[47:32] := src1[31:16] 
	dst[63:48] := src2[31:16] 
	dst[79:64] := src1[47:32] 
	dst[95:80] := src2[47:32] 
	dst[111:96] := src1[63:48] 
	dst[127:112] := src2[63:48] 
	RETURN dst[127:0]
}
tmp_dst[127:0] := INTERLEAVE_WORDS(a[127:0], b[127:0])
FOR j := 0 to 7
	i := j*16
	IF k[j]
		dst[i+15:i] := tmp_dst[i+15:i]
	ELSE
		dst[i+15:i] := src[i+15:i]
	FI
ENDFOR
dst[MAX:128] := 0