An apparatus comprises an instruction execution control unit which fetches an instruction executed according to a microinstruction, the instruction is classified into a plurality of types, from a memory, wherein the types include a first type indicative of generating a condition code and a second type indicative of not generating the condition code, the condition code corresponds to a result of execution of the instruction, and a condition code generation unit which generates the condition code of the instruction corresponding to the first type on condition that the instruction corresponding to the second type is executed next to the instruction corresponding to the first type.