Create index starting from and incremented by immediate
This instruction populates the destination vector by setting the first element to the first signed immediate integer operand and monotonically incrementing the value by the second signed immediate integer operand for each subsequent element. 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 |
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | size | 1 | imm5b | 0 | 1 | 0 | 0 | 0 | 0 | imm5 | Zd | |||||||||||||
if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let d : integer = UInt(Zd); let imm1 : integer = SInt(imm5); let imm2 : integer = SInt(imm5b);
| <Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
| <T> |
Is the size specifier,
encoded in
|
| <imm1> |
Is the first signed immediate operand, in the range -16 to 15, encoded in the "imm5" field. |
| <imm2> |
Is the second signed immediate operand, in the range -16 to 15, encoded in the "imm5b" field. |
CheckSVEEnabled(); let VL : integer{} = CurrentVL(); let elements : integer = VL DIV esize; var result : bits(VL); for e = 0 to elements-1 do let index : integer = imm1 + e * imm2; result[e*:esize] = index[esize-1:0]; end; Z{VL}(d) = result;
2026-03_rel 2026-03-26 20:48:11
Copyright © 2010-2026 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.