Data processor

阅读:824发布:2021-08-22

专利汇可以提供Data processor专利检索,专利查询,专利分析的服务。并且PURPOSE: To reduce frequency in disturbance of a pipeline to improve the throughput by preliminarily forecasting the execution result of a conditional branch instruction with a high probability.
CONSTITUTION: When it is found that the instruction given to a fetch decoding mechanism 1 is a conditional branch instruction, it is forecasted based on a forecasting table 4 whether branching will occur or not. If the occurrence of branching is forecasted, an instruction substituting mechanism 5 exchanges the displacement of the conditional branch instruction and its instruction length and inverts the condition of branching. For example, branching for a set Z flag is substituted with branching for the reset Z flag. The instruction length is given to an instruction executing mechanism 2 instead of the displacement, and the displacement is applied to a program counter 31 instead of the instruction length. The fetch decoding mechanism 1 fetches the next instruction in the branch destination address.
COPYRIGHT: (C)1988,JPO&Japio,下面是Data processor专利的具体信息内容。

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