Abstract
For the class of applicative programming languages, efficient methods for reclaiming the memory occupied by released data structures constitute an important aspect of current implementations. The present article addresses the problem of memory reuse for logic programs through program analysis rather than by run-time garbage collection. The aim is to derive run-time properties that can be used at compile time to specialize the target code for a program according to a given set of queries and to automatically introduce destructive assignments in a safe and transparent way so that fewer garbage cells are created. The dataflow analysis is constructed as an application of abstract interpretation for logic programs. An abstract domain for describing structure-sharing and liveness properties is developed as are primitive operations that guarantee a sound and terminating global analysis. We explain our motivation for the design of the abstract domain, make explicit the underlying implementation assumptions, and discuss the precision of the results obtained by a prototype analyzer.
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