_mm256_mask_unpackhi_epi16
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512BW
Header File
Instruction
VPUNPCKHWD ymm {k}, ymm, ymm
Synopsis
_mm256_mask_unpackhi_epi16(__m256i src, __mmask16 k, __m256i a, __m256i b);
Description
Unpack and interleave 16-bit integers from the high half of each 128-bit lane in "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_HIGH_WORDS(src1[127:0], src2[127:0]) {
dst[15:0] := src1[79:64]
dst[31:16] := src2[79:64]
dst[47:32] := src1[95:80]
dst[63:48] := src2[95:80]
dst[79:64] := src1[111:96]
dst[95:80] := src2[111:96]
dst[111:96] := src1[127:112]
dst[127:112] := src2[127:112]
RETURN dst[127:0]
}
tmp_dst[127:0] := INTERLEAVE_HIGH_WORDS(a[127:0], b[127:0])
tmp_dst[255:128] := INTERLEAVE_HIGH_WORDS(a[255:128], b[255:128])
FOR j := 0 to 15
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:256] := 0