_mm256_maskz_unpackhi_epi64
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
Instruction
VPUNPCKHQDQ ymm {z}, ymm, ymm
Synopsis
_mm256_maskz_unpackhi_epi64(__mmask8 k, __m256i a, __m256i b);
Description
Unpack and interleave 64-bit integers from the high half of each 128-bit lane in "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_HIGH_QWORDS(src1[127:0], src2[127:0]) {
dst[63:0] := src1[127:64]
dst[127:64] := src2[127:64]
RETURN dst[127:0]
}
tmp_dst[127:0] := INTERLEAVE_HIGH_QWORDS(a[127:0], b[127:0])
tmp_dst[255:128] := INTERLEAVE_HIGH_QWORDS(a[255:128], b[255:128])
FOR j := 0 to 3
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:256] := 0