Stepping up to the -o4 optimization flag will buy incremental performance derived from chip-specific optimizations, interprocedural analysis, and high-order transformation routines.
进一步使用-O4优化标记可以获得更高的性能，但付出的代价是针对特定芯片的优化、程序间分析以及高阶转换例程。
In this paper, the data flow, data flow framework and algorithms of data flow analysis are discussed; the idea of demand interprocedural data flow analysis is also presented.
该文对数据流、数据流框架及数据流算法进行了阐述；并简要地介绍了所提出的需求过程间数据流分析的方法。
In this paper, the data flow, data flow framework and algorithms of data flow analysis are discussed; the idea of demand interprocedural data flow analysis is also presented.
该文对数据流、数据流框架及数据流算法进行了阐述；并简要地介绍了所提出的需求过程间数据流分析的方法。
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