NDLI: Path-sensitive value-flow analysis

Content Provider	ACM Digital Library
Author	Anik, Sadun Bodík, Rastisalv
Abstract	When analyzing programs for value recomputation, one faces the problem of naming the value that flows between equivalent computations with different lexical names. This paper presents a data-flow analysis framework that overcomes this problem by synthesizing a name space tailored for tracing the values whose flow is of interest to a given data-flow problem. Furthermore, to exploit recomputation of a value with multiple, synonymous names, path-sensitive value numbering on the synthetic name space is developed. Optimizations that rely on value flow to detect redundant computations, such as partial redundancy elimination and constant propagation, become more powerful when phrased in our framework.The framework is built on a new program representation called Value Name Graph (VNG) which gains its power from integrating three orthogonal techniques: symbolic back-substitution, value numbering, and data-flow analysis. Our experiments with the implementation show that analysis on the VNG is practical in both time and space.
Starting Page	237
Ending Page	251
Page Count	15
File Format	PDF
ISBN	0897919793
DOI	10.1145/268946.268966
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1998-01-21
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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Path-sensitive value-flow analysis