Interleave elements from two half predicates
This instruction interleaves alternating elements from the lowest or highest halves of the first and second source predicates, and places the values in the destination predicate. This instruction is unpredicated.
It has encodings from 2 classes: High halves and Low halves
| 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 |
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | size | 1 | 0 | Pm | 0 | 1 | 0 | 0 | 0 | 1 | 0 | Pn | 0 | Pd | ||||||||||
| opc | H | ||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let n : integer = UInt(Pn); let m : integer = UInt(Pm); let d : integer = UInt(Pd); let part : integer = 1;
| 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 |
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | size | 1 | 0 | Pm | 0 | 1 | 0 | 0 | 0 | 0 | 0 | Pn | 0 | Pd | ||||||||||
| opc | H | ||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let n : integer = UInt(Pn); let m : integer = UInt(Pm); let d : integer = UInt(Pd); let part : integer = 0;
| <Pd> |
Is the name of the destination scalable predicate register, encoded in the "Pd" field. |
| <T> |
Is the size specifier,
encoded in
|
| <Pn> |
Is the name of the first source scalable predicate register, encoded in the "Pn" field. |
| <Pm> |
Is the name of the second source scalable predicate register, encoded in the "Pm" field. |
CheckSVEEnabled(); let VL : integer{} = CurrentVL(); let PL : integer{} = VL DIV 8; let pairs : integer = VL DIV (esize * 2); let operand1 : bits(PL) = P{}(n); let operand2 : bits(PL) = P{}(m); var result : bits(PL); let base : integer = part * pairs; for p = 0 to pairs-1 do result[(2*p+0)*:(esize DIV 8)] = operand1[(base+p)*:(esize DIV 8)]; result[(2*p+1)*:(esize DIV 8)] = operand2[(base+p)*:(esize DIV 8)]; end; P{PL}(d) = result;
2026-03_rel 2026-03-26 20:48:11
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