Procedure to avoid rereading of register file due to data danger in multi-stage pipeline

摘要

Register address of source operand data is detected for first instruction. Register address indicates position of source operand data for first instruction in register. Source operand data for first instruction is read from register. It is determined if local stop in pipeline is activated, where there is a later instruction, which is generator for first instruction and in which local stop indicates that source operand data which has been read out of register for first instruction, are incorrect. Independent claim included for device to avoid renewed reading of register due to data danger in pipeline.