Interleave elements from two vectors
This instruction places the two-way interleaved elements from the first and second source vectors in the corresponding elements of the two destination vectors.
This instruction is unpredicated.
It has encodings from 2 classes: 8-bit to 64-bit elements and 128-bit element
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | size | 1 | Zm | 1 | 1 | 0 | 1 | 0 | 0 | Zn | Zd | 0 | ||||||||||||
| op | |||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SME2) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let n : integer = UInt(Zn); let m : integer = UInt(Zm); let d : integer = UInt(Zd::'0');
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | Zm | 1 | 1 | 0 | 1 | 0 | 1 | Zn | Zd | 0 | |||||||||||
| op | |||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SME2) then EndOfDecode(Decode_UNDEF); end; if MaxImplementedSVL() < 256 then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 128; let n : integer = UInt(Zn); let m : integer = UInt(Zm); let d : integer = UInt(Zd::'0');
| <Zd1> |
Is the name of the first scalable vector register of the destination multi-vector group, encoded as "Zd" times 2. |
| <T> |
Is the size specifier,
encoded in
|
| <Zd2> |
Is the name of the second scalable vector register of the destination multi-vector group, encoded as "Zd" times 2 plus 1. |
| <Zn> |
Is the name of the first source scalable vector register, encoded in the "Zn" field. |
| <Zm> |
Is the name of the second source scalable vector register, encoded in the "Zm" field. |
CheckStreamingSVEEnabled(); let VL : integer{} = CurrentVL(); if VL < esize * 2 then EndOfDecode(Decode_UNDEF); end; let pairs : integer = VL DIV (esize * 2); let operand0 : bits(VL) = Z{}(n); let operand1 : bits(VL) = Z{}(m); var result : bits(VL); for r = 0 to 1 do let base : integer = r * pairs; for p = 0 to pairs-1 do result[(2*p+0)*:esize] = operand0[(base+p)*:esize]; result[(2*p+1)*:esize] = operand1[(base+p)*:esize]; end; Z{VL}(d+r) = result; end;
This instruction is a data-independent-time instruction as described in About PSTATE.DIT.
2026-03_rel 2026-03-26 20:48:11
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