There is provided a processor comprising a plurality of registers, an acquisition unit, a calculation unit, a pipeline register, and a storage unit, wherein in a case in which a register indicated by source register information included in a second instruction and a register indicated by destination register information included in a first instruction match, and the second instruction or an instruction that precedes to the second instruction designates the second instruction as the last instruction that uses the calculated value obtained in accordance with the first instruction, the storage unit does not store the calculated value stored in the pipeline register in a register indicated by destination register information included in the first instruction, and stores, in other cases, the calculated value stored in the pipeline register in the register indicated by the destination register information included in the first instruction.