Multi-vector single-precision convert to 8-bit floating-point
This instruction converts each single-precision element of the four source vectors to 8-bit floating-point while scaling the value by 2SInt(FPMR.NSCALE), and places the results in the quarter-width elements of the destination vector. The 8-bit floating-point encoding format is selected by FPMR.F8D.
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 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | Zn | 0 | 0 | Zd | ||||||
| N | |||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SME2) || !IsFeatureImplemented(FEAT_FP8) then EndOfDecode(Decode_UNDEF); end; 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. |
| <Zn1> |
Is the name of the first scalable vector register of the source multi-vector group, encoded as "Zn" times 4. |
| <Zn4> |
Is the name of the fourth scalable vector register of the source multi-vector group, encoded as "Zn" times 4 plus 3. |
CheckFPMREnabled(); 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); let operand3 : bits(VL) = Z{}(n+2); let operand4 : bits(VL) = Z{}(n+3); for e = 0 to elements-1 do let element1 : bits(32) = operand1[e*:32]; let element2 : bits(32) = operand2[e*:32]; let element3 : bits(32) = operand3[e*:32]; let element4 : bits(32) = operand4[e*:32]; result[(0*elements + e)*:8] = FPConvertFP8{8, 32}(element1, FPCR(), FPMR()); result[(1*elements + e)*:8] = FPConvertFP8{8, 32}(element2, FPCR(), FPMR()); result[(2*elements + e)*:8] = FPConvertFP8{8, 32}(element3, FPCR(), FPMR()); result[(3*elements + e)*:8] = FPConvertFP8{8, 32}(element4, FPCR(), FPMR()); end; Z{VL}(d) = result;
2025-12_rel 2025-12-10 16:41:45
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