| 摘要 |
In a processor executing plural instructions simultaneously, writin-destination-register numbers of the plural instructions to be executed simultaneously are compared, and kinds of operations to be executed by the plural instructions are changed in response to a comparison result. When the writing-destination-register numbers of the plural instructions are identical, a constant operation is applied to plural operation results obtained from the plural instructions to obtain an operation result and the operation result is written into the writing-destination-register instructed by the plural instructions. Results outputted from plural processing units are put together into one result and the result is stored in one register. Thus, register use efficiency and process efficiency are improved. |
