METHOD AND PROCESSOR FOR ALLOCATING RENAME REGISTER

摘要

PROBLEM TO BE SOLVED: To provide a method and device which make good use of a virtual buffer so as to increase the parallel processing functions for instructions of a pipeline type processor. SOLUTION: A buffer pointer allocating mechanism is configured and rename buffer are allocated even unless a physical rename register 123 is ready for use during dispatching. According to a buffer pointer allocation table 21, those virtual rename buffers 24 are allocated. When an instruction corresponding to an entry stored in a specific physical rename register 123 is completed, virtual bits set together with respective physical rename registers 123 are inverted, and the results are written in an architecture register 122. Therefore, rename registers can be allocated in dispatching as if more rename buffers than the actual physical rename registers 123 were present.