摘要
描述在一款支持超标量与超长指令字结构的混合架构数字信号处理器上设计的分支预测结构。为控制硬件复杂度并充分提高预测准确度,设计双峰预测器与PAp预测器混合型预测结构,充分发挥两种预测器的优点。在设计完成的处理器上,运行标准DSPstone程序。实验结果表明,添加分支预测结构使得处理器性能平均提升23%,并且混合型预测结构相比单一预测结构在准确度方面优势明显。
A design of hybrid branch predictor on a digital signal processor which supports Superscalar-VLIW hybrid architecture is described. To control hardware complexity and improve the accuracy of prediction,a hybrid branch predictor of bimodal and PAp is selected for the branch prediction scheme. The standard DSPstone programs have been run on the processor. The experimental results show that the processor with hybrid branch predictor has an improvement of 23% on average compared with processor without branch predictor,and processor with hybrid branch predictor predicts more accurately than processor with only bimodal predictor.
出处
《计算机应用与软件》
2017年第2期106-111,共6页
Computer Applications and Software
基金
核高基重大专项基金项目(2012ZX01034001-002)
