_mm512_shuffle_i64x2
Classification
AVX-512, Swizzle, CPUID Test: AVX512F
Header File
Instruction
VSHUFI64X2 zmm, zmm, zmm, imm8
Synopsis
_mm512_shuffle_i64x2(__m512i a, __m512i b, const int imm8);
Description
Shuffle 128-bits (composed of 2 64-bit integers) selected by "imm8" from "a" and "b", and store the results in "dst".
Operation
DEFINE SELECT4(src, control) {
CASE(control[1:0]) OF
0: tmp[127:0] := src[127:0]
1: tmp[127:0] := src[255:128]
2: tmp[127:0] := src[383:256]
3: tmp[127:0] := src[511:384]
ESAC
RETURN tmp[127:0]
}
dst[127:0] := SELECT4(a[511:0], imm8[1:0])
dst[255:128] := SELECT4(a[511:0], imm8[3:2])
dst[383:256] := SELECT4(b[511:0], imm8[5:4])
dst[511:384] := SELECT4(b[511:0], imm8[7:6])
dst[MAX:512] := 0