_mm_maskz_unpacklo_epi32
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
Instruction
VPUNPCKLDQ xmm {z}, xmm, xmm
Synopsis
_mm_maskz_unpacklo_epi32(__mmask8 k, __m128i a, __m128i b);
Description
Unpack and interleave 32-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_DWORDS(src1[127:0], src2[127:0]) {
dst[31:0] := src1[31:0]
dst[63:32] := src2[31:0]
dst[95:64] := src1[63:32]
dst[127:96] := src2[63:32]
RETURN dst[127:0]
}
tmp_dst[127:0] := INTERLEAVE_DWORDS(a[127:0], b[127:0])
FOR j := 0 to 3
i := j*32
IF k[j]
dst[i+31:i] := tmp_dst[i+31:i]
ELSE
dst[i+31:i] := 0
FI
ENDFOR
dst[MAX:128] := 0