METHOD AND SYSTEM TO IMPLEMENT ANALYZING MECHANISM DEPENDING ON EARLY DATA IN HIGH PERFORMANCE DATA PROCESSING SYSTEM UTILIZING COMMAND ISSUANCE WHICH IS NOT IN PROGRAM ORDER

摘要

PROBLEM TO BE SOLVED: To provide a method and a system to implement analyzing mechanism depending on early data in a high performance data processing system utilizing command issuance which is not in program order. SOLUTION: A command cache 14 is provided with plural cache lines and the respective cache lines are capable of storing plural commands. A register depending cache 44 contains the same number of cache lines as the command cache 14 and the respective cache lines in the register depending cache 44 are capable of storing the same number of register depending units as the commands in respective cache lines in the command cache 14. Groups of the register depending units are fetched from the register depending cache 44 in a single processor cycle.