安腾处理器中多级分支预测机制

Multi-level Branch Prediction Strategy in Itanium Processor

分支预测技术可消除分支指令之后损失的周期,防止流水线断流。高比率的分支预测精确度是高性能微处理器性能的保证。本文详细分析了安腾处理器(Itanium)多级分支预测机制,并研究了每级预测器的具体实现。

Multi-level prediction strategy enhance prediction precision and improve performance. In this paper, we analyze multi-level branch prediction in the front end and study the implementation of each-level predictor on the basis of hanium processor which is a commercial EPIC processor.