_mm_maskz_unpacklo_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPUNPCKLWD xmm {z}, xmm, xmm
Synopsis
_mm_maskz_unpacklo_epi16(__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 zeromask "k" (elements are zeroed out 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] := 0
FI
ENDFOR
dst[MAX:128] := 0