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2001
Springer

Estimating the Impact of Scalable Pointer Analysis on Optimization

10 years 2 months ago
Estimating the Impact of Scalable Pointer Analysis on Optimization
This paper addresses the following question: Do scalable control-flow-insensitive pointer analyses provide the level of precision required to make them useful in compiler optimizations? We first describe alias frequency, a metric that measures the ability of a pointer analysis to determine that pairs of memory accesses in C programs cannot be aliases. We believe that this kind of information is useful for a variety of optimizations, while remaining independent of a particular optimization. We show that control-flow and context insensitive analyses provide the same answer as the best possible pointer analysis on at least 95% of all statically generated alias queries. In order to understand the potential run-time impact of the remaining 5% queries, we weight the alias queries by dynamic execution counts obtained from profile data. Flow-insensitive pointer analyses are accurate on at least 95% of the weighted alias queries as well. We then examine whether scalable pointer analyses are...
Manuvir Das, Ben Liblit, Manuel Fähndrich, Ja
Added 30 Jul 2010
Updated 30 Jul 2010
Type Conference
Year 2001
Where SAS
Authors Manuvir Das, Ben Liblit, Manuel Fähndrich, Jakob Rehof
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