Dependence Graphs and Program SlicingCodeSurfer, GrammaTech's program analysis, understanding, and inspection system for ANSI C, is based on system dependence graphs, a fundamental intermediate structure for representing programs. Slicing is a particular application of dependence graphs. Together they have come to be widely recognized as a centrally important technology in software engineering, with applications in program understanding, maintenance, debugging, testing, differencing, specialization, reuse, optimization, parallelization, and anomaly detection. Because they operate on the deep structure in programs rather than surface structures, they enable much more sophisticated and useful analysis capabilities than conventional tools. GrammaTech's implementation of components for program dependence graphs and slicing is probably the most advanced in existence.
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