Multiply by immediate (unpredicated)
Multiply by an immediate each element of the source vector, and destructively place the results in the corresponding elements of the source vector. The immediate is a signed 8-bit value in the range -128 to +127, inclusive. 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 | 1 | 0 | 0 | 1 | 0 | 1 | size | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | imm8 | Zdn | ||||||||||||
if !HaveSVE() && !HaveSME() then UNDEFINED; integer esize = 8 << UInt(size); integer dn = UInt(Zdn); integer imm = SInt(imm8);
| <Zdn> |
Is the name of the source and destination scalable vector register, encoded in the "Zdn" field. |
| <T> |
Is the size specifier,
encoded in
|
| <imm> |
Is the signed immediate operand, in the range -128 to 127, encoded in the "imm8" field. |
CheckSVEEnabled(); integer elements = VL DIV esize; bits(VL) operand1 = Z[dn]; bits(VL) result; for e = 0 to elements-1 integer element1 = SInt(Elem[operand1, e, esize]); Elem[result, e, esize] = (element1 * imm)<esize-1:0>; Z[dn] = result;
If FEAT_SVE2 is enabled or FEAT_SME is enabled, then when PSTATE.DIT is 1:
This instruction might be immediately preceded in program order by a MOVPRFX instruction. The MOVPRFX instruction must conform to all of the following requirements, otherwise the behavior of the MOVPRFX and this instruction is unpredictable:
Internal version only: isa v33.11seprel, AdvSIMD v29.05, pseudocode v2021-09_rel, sve v2021-09_rc3d ; Build timestamp: 2021-10-06T11:41
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