Abstract

Program slicing is a fundamental operation for many software engineering tools. Currently, the most efficient algorithm for interprocedural slicing is one that uses a program representation called the system dependence graph. This paper defines a new algorithm for slicing with system dependence graphs that is asymptotically faster than the previous one. A preliminary experimental study indicates that the new algorithm is also significantly faster in practice, providing roughly a 6-fold speedup on examples of 348 to 757 lines.

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