_mm256_maskz_inserti64x2
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512DQ
Header File
Instruction
VINSERTI64X2 ymm {z}, ymm, xmm, imm8
Synopsis
_mm256_maskz_inserti64x2(__mmask8 k, __m256i a, __m128i b, int imm8);
Description
Copy "a" to "tmp", then insert 128 bits (composed of 2 packed 64-bit integers) from "b" into "tmp" at the location specified by "imm8". Store "tmp" to "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
tmp[255:0] := a[255:0]
CASE (imm8[0]) OF
0: tmp[127:0] := b[127:0]
1: tmp[255:128] := b[127:0]
ESAC
FOR j := 0 to 3
i := j*64
IF k[j]
dst[i+63:i] := tmp[i+63:i]
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:256] := 0