网络处理器高频指令对的组合设计与分析

网络处理嚣是专门为网络处理而设计的处理嚣，其指令集是软硬件的界面，指令集的设计对性能有较大的影响．本文提出了一种针对高频率指令对-HFIP的组合优化方法，该方法充分利用了网络处理器基准程序里指令执行过程中的动态相关性，开发了simpIescalar模拟嚣的指令格式里未使用的空住作为新指令的扩展域．采用量化的方法对实验结果进行分析．模拟结果显示该方法合理有效，在提高网络处理器性能的同时有效降低指令cache的功耗．实现性能／功耗的权衡．

High Frequency Instruction Pair Combination and Analysis in Network Processor Design

Network processor is a specific processor optimized to network process, the instruction set is the interface between software and hardware ,the design of instruction set can greatly influence processor performance. An optimized method to combine high frequency instruction pair to a new instruction is proposed in this paper ,the method makes full use of the dynamic relativity in the execution of network processor benchmark,it exploits the unused bit in the instruction format of simplesealar to be the expansion field in the new instruction. Quantitative method is used to analyze the experimental result, the simulation result shows that the method can both improve the performance and decrease the I-cache power consumption,realize the tradeoff between performance and power consumption.