通过重用存储区域的标识设计iTLB。首先,将虚拟页号的高位编码成较短的存储区域标识,来减少iTLB查询时的比较位数。其次,在运行到新的存储区域之前,一直重用上次指令所在的存储区域的标识。实验结果表明,与参考iTLB设计相比,这种存储区域重用的iTLB设计技术,其平均功耗降低了62.84%,延迟减少了9.96%,面积减少了44.78%,而平均性能仅下降了0.23%。
In order to design iTLB by memory region reusing, its comparison bits of lookup are reduced through the memory region encoding technology firstly,which encodes the higher-order bits of VPN with a very shorter memory region ID before the VPN is sent to iTLB. Secondly, the memory region ID is reused before the next memory region is switched into. Compared to the baseline iTLB, experimental results show the average dynamic power, delay and area of the new design decrease by 62.84 %, 9.96% and 44.78 % respectively, with only 0.23 % average IPC reduction.