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VUSDOT (vector)

Dot Product vector form with mixed-sign integers. This instruction performs the dot product of the four unsigned 8-bit integer values in each 32-bit element of the first source register with the four signed 8-bit integer values in the corresponding 32-bit element of the second source register, accumulating the result into the corresponding 32-bit element of the destination register.

From Armv8.2, this is an OPTIONAL instruction. ID_ISAR6.I8MM indicates whether this instruction is supported in the T32 and A32 instruction sets.

It has encodings from the following instruction sets: A32 ( A1 ) and T32 ( T1 ) .

A1
(FEAT_AA32I8MM)

Decode for all variants of this encoding

if !IsFeatureImplemented(FEAT_AA32I8MM) then Undefined(); end; if Q == '1' && (Vd[0] == '1' || Vn[0] == '1' || Vm[0] == '1') then Undefined(); end; let d : integer = UInt(D::Vd); let n : integer = UInt(N::Vn); let m : integer = UInt(M::Vm); let regs : integer = if Q == '1' then 2 else 1;

T1
(FEAT_AA32I8MM)

Decode for all variants of this encoding

if InITBlock() then UnpredictableProcedure(); end; if !IsFeatureImplemented(FEAT_AA32I8MM) then Undefined(); end; if Q == '1' && (Vd[0] == '1' || Vn[0] == '1' || Vm[0] == '1') then Undefined(); end; let d : integer = UInt(D::Vd); let n : integer = UInt(N::Vn); let m : integer = UInt(M::Vm); let regs : integer = if Q == '1' then 2 else 1;