Bitwise clear and exclusive-OR
This instruction performs a bitwise AND between elements of the second source vector and the inverted corresponding elements of the third source vector, then an exclusive-OR between the results and the corresponding elements of the first source vector. The final results are destructively placed in the corresponding elements of the destination and first source vector. 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 | 0 | 1 | 1 | Zm | 0 | 0 | 1 | 1 | 1 | 0 | Zk | Zdn | ||||||||||||
| opc | o2 | ||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SVE2) && !IsFeatureImplemented(FEAT_SME) then EndOfDecode(Decode_UNDEF); end; let m : integer = UInt(Zm); let k : integer = UInt(Zk); let dn : integer = UInt(Zdn);
| <Zdn> |
Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field. |
| <Zm> |
Is the name of the second source scalable vector register, encoded in the "Zm" field. |
| <Zk> |
Is the name of the third source scalable vector register, encoded in the "Zk" field. |
CheckSVEEnabled(); let VL : integer{} = CurrentVL(); let operand1 : bits(VL) = Z{}(dn); let operand2 : bits(VL) = Z{}(m); let operand3 : bits(VL) = Z{}(k); Z{VL}(dn) = operand1 XOR (operand2 AND NOT(operand3));
This instruction is a data-independent-time instruction as described in About PSTATE.DIT.
This instruction might be immediately preceded in program order by a MOVPRFX instruction. The MOVPRFX must conform to all of the following requirements, otherwise the behavior of the MOVPRFX and this instruction is CONSTRAINED UNPREDICTABLE:
2026-03_rel 2026-03-26 20:48:11
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