SYSTEM AND METHOD FOR CHANGING REGISTER NAME

摘要

PROBLEM TO BE SOLVED: To prevent data dependency and to execute a plurality of instructions at the same time. SOLUTION: This is a system that can execute instructions in no special order and composed of a temporary buffer 116 which includes a plurality of storage locations for storing execution results and is stored with the execution result of an instruction in one of storage locations in an instruction window and tag assigning logic 122 which receives a data dependency result from a data dependency inspecting means 108 and outputs a tag instead of a register address for the operand of a 1st instruction when the operand of the 1st instruction depends upon the that of the last instruction among the plural instructions in the instruction window so that the tag indicates the address of the operand in one of the storage locations.