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Erschienen in:
2010 | OriginalPaper | Buchkapitel
RATA: Rapid Atomic Type Analysis by Abstract Interpretation – Application to JavaScript Optimization
verfasst von : Francesco Logozzo, Herman Venter
Erschienen in: Compiler Construction
Verlag: Springer Berlin Heidelberg
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We introduce RATA, a static analysis based on abstract interpretation for the rapid inference of atomic types in
JavaScript
programs. RATA enables aggressive type specialization optimizations in dynamic languages. RATA is a combination of an interval analysis (to determine the range of variables), a kind analysis (to determine if a variable may assume fractional values, or
NaN
), and a variation analysis (to relate the values of variables). The combination of those three analyses allows our compiler to specialize
Float64
variables (the only numerical type in
JavaScript
) to
Int32
variables, providing large performance improvements (up to 7.7×) in some of our benchmarks.