在一种控制数据流图定义的基础上 ,提出了面向软硬件划分中粒度选择的粒度变换方法 变换以层次化结点为中介 ,包括合并和展开操作 ,并遵循所指定的若干要求以保证变换前后的系统表示在形式和功能上的一致性 分析表明 ,这一变换过程简单快速 ,变换前后功能一致、形式统一 ,能很好地满足软硬件划分中粒度选择的需要 Based on the definition of a control data flow graph, this paper proposes a granular transform approach to the granularity selection in software and hardware partitioning, which is based on hierarchical nodes, including merging and unfolding operations and following some specified requirements to ensure the transformation The consistency of form and function indicates that the transformation process is simple and fast, the function is consistent before and after transformation, the form is uniform, and the requirement of granularity selection in software and hardware partition can be well met