System and method for caching data

Abstract

A data caching system and method. When the system and the method are applied in the field of processors, before a processor executes a data reading instruction, data required by the command can be filled into a data memory, a possible data address when the command is executed next time is predicted and prefetched, and corresponding data is stored according to a rule, and the number of times of label comparison is reduced as much as possible.

Description

technical field [0001] The invention relates to the fields of computer, communication and integrated circuit. Background technique [0002] Generally speaking, the function of the cache is to copy a part of the content in the memory, so that the content can be quickly accessed by the processor core in a short time, so as to ensure the continuous operation of the pipeline. [0003] The addressing of the current cache is based on the following method. Firstly, the index segment in the address is used to address and read out the tags in the tag memory. At the same time, the index segment in the address and the displacement segment in the block are jointly addressed to read out the content in the cache. In addition, the tag read from the tag memory is matched with the tag field in the address. If the tag read from the tag memory is the same as the tag segment in the address, then the content read from the cache is valid, which is called a cache hit. Otherwise, if the tag read...

AI Technical Summary

Problems solved by technology

[0005] In addition, in the most commonly used set associative cache structure in modern processors, the more way groups, the better the performance of the cache, but the more tags need to be read and compared at the same time, resulting in higher power consumption

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