APPARATUS AND METHOD FOR OPTIMIZING DIE UTILIZATION AND SPEED PERFORMANCE BY REGISTER FILE SPLITTING

摘要

A multi-ported register file is typically metal limited to the area consumed by the circuit proportional with the square of the number of ports. A processor having a register file structure divided into a plurality of separate and independent register files forms a layout structure with an improved layout efficiency. The read ports of the total register file structure are allocated among the separate and individual register files. Each of the separate and individual register files has write ports that correspond to the total number of write ports in the total register file structure. Writes are fully broadcast so that all of the separate and individual register files are coherent.