Control flow analysis in scheme
PLDI '88 Proceedings of the ACM SIGPLAN 1988 conference on Programming Language design and Implementation
The semantics of Scheme control-flow analysis
PEPM '91 Proceedings of the 1991 ACM SIGPLAN symposium on Partial evaluation and semantics-based program manipulation
Demand-driven computation of interprocedural data flow
POPL '95 Proceedings of the 22nd ACM SIGPLAN-SIGACT symposium on Principles of programming languages
A unified treatment of flow analysis in higher-order languages
POPL '95 Proceedings of the 22nd ACM SIGPLAN-SIGACT symposium on Principles of programming languages
A practical and flexible flow analysis for higher-order languages
ACM Transactions on Programming Languages and Systems (TOPLAS)
Demand-driven pointer analysis
Proceedings of the ACM SIGPLAN 2001 conference on Programming language design and implementation
Simultaneous Demand-Driven Data-Flow and Call Graph Analysis
ICSM '99 Proceedings of the IEEE International Conference on Software Maintenance
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Compilers for dynamically and statically typed languages ensure safe execution by verifying that all operations are performed on appropriate values. An operation as simple as car in Scheme and hd in SML will include a run time check unless the compiler can prove that the argument is always a non-empty list using some type analysis. We present a demand-driven type analysis that can adapt the precision of the analysis to various parts of the program being compiled. This approach has the advantage that the analysis effort can be spent where it is justified by the possibility of removing a run time check, and where added precision is needed to accurately analyze complex parts of the program. Like the k-cfa our approach is based on abstract interpretation but it can analyze some important programs more accurately than the k-cfa for any value of k. We have built a prototype of our type analysis and tested it on various programs with higher order functions. It can remove all run time type checks in some nontrivial programs which use map and the Y combinator.