Broadcast general-purpose register to vector elements (unpredicated)
This instruction unconditionally broadcasts the general-purpose scalar source register into each element of the destination vector. This instruction is unpredicated.
This instruction is used by the alias MOV (scalar, 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 |
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | size | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | Rn | Zd | |||||||||
if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let n : integer = UInt(Rn); 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
|
| <R> |
Is a width specifier,
encoded in
|
| <n|SP> |
Is the number [0-30] of the general-purpose source register or the name SP (31), encoded in the "Rn" field. |
CheckSVEEnabled(); let VL : integer{} = CurrentVL(); let elements : integer = VL DIV esize; var operand : bits(64); if n == 31 then operand = SP{64}(); else operand = X{64}(n); end; var result : bits(VL); for e = 0 to elements-1 do result[e*:esize] = operand[esize-1:0]; end; Z{VL}(d) = result;
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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