Multi-vector unsigned saturating extract narrow to interleaved integer
This instruction saturates the unsigned integer value in each element of the four source vectors to quarter the original source element width, and places the four-way interleaved results in the quarter-width destination elements.
This instruction is unpredicated.
| 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 | sz | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | Zn | 1 | 1 | Zd | ||||||
| op | N | U | |||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SME2) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(sz); let n : integer = UInt(Zn::'00'); let d : integer = UInt(Zd);
| <Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
| <T> |
Is the size specifier,
encoded in
|
| <Zn1> |
Is the name of the first scalable vector register of the source multi-vector group, encoded as "Zn" times 4. |
| <Tb> |
Is the size specifier,
encoded in
|
| <Zn4> |
Is the name of the fourth scalable vector register of the source multi-vector group, encoded as "Zn" times 4 plus 3. |
CheckStreamingSVEEnabled(); let VL : integer{} = CurrentVL(); let elements : integer = VL DIV (4 * esize); var result : bits(VL); for e = 0 to elements-1 do for i = 0 to 3 do let operand : bits(VL) = Z{}(n+i); let element : integer = UInt(operand[e*:(4 * esize)]); result[(4*e + i)*:esize] = UnsignedSat{esize}(element); end; end; Z{VL}(d) = result;
2026-03_rel 2026-03-26 20:48:11
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