Multi-vector single-precision convert to half-precision
This instruction converts each element of the two source vectors from single-precision to half-precision floating-point, and places the results in the half-width destination elements.
This instruction follows SME2 floating-point numerical behaviors corresponding to instructions that place their results in one or more SVE Z vectors.
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 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | Zn | 0 | Zd | |||||||
| op | N | ||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SME2) then EndOfDecode(Decode_UNDEF); end; let n : integer = UInt(Zn::'0'); let d : integer = UInt(Zd);
| <Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
| <Zn1> |
Is the name of the first scalable vector register of the source multi-vector group, encoded as "Zn" times 2. |
| <Zn2> |
Is the name of the second scalable vector register of the source multi-vector group, encoded as "Zn" times 2 plus 1. |
CheckStreamingSVEEnabled(); let VL : integer{} = CurrentVL(); let elements : integer = VL DIV 32; var result : bits(VL); let operand1 : bits(VL) = Z{}(n+0); let operand2 : bits(VL) = Z{}(n+1); for e = 0 to elements-1 do let element1 : bits(32) = operand1[e*:32]; let element2 : bits(32) = operand2[e*:32]; let res1 : bits(16) = FPConvertSVE{16, 32}(element1, FPCR()); let res2 : bits(16) = FPConvertSVE{16, 32}(element2, FPCR()); result[e*:16] = res1; result[(elements+e)*:16] = res2; end; Z{VL}(d) = result;
2025-12_rel 2025-12-10 16:41:45
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