Accurate branch prediction is a critical part of high performance instruction stream processing. In this paper, I present a hardware implementation of branch prediction for a RV32IM CPU, starting with static decode stage predictions and culminating in the use of BATAGE. In addition, I detail my experience writing the RTL in Hardcaml, a hardware description library for the functional programming language OCaml.
翻译:精确分支预测是高效率指令流处理的关键组成部分。本文针对RV32IM CPU提出了一种分支预测的硬件实现方案,从静态译码阶段预测起步,最终采用BATAGE算法。此外,我还详细阐述了使用Hardcaml(一种面向函数式编程语言OCaml的硬件描述库)编写寄存器传输级代码的实践经验。