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COLLOQUIUM |
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Speeding Up the Web: Just-in-Time Type Specialization for Dynamic Languages David
Anderson Mozilla Corporation Friday,
November 20th, 2009 11:00
AM – 12:00 PM Fuller
Labs 320 Abstract: Dynamically typed languages are
increasingly popular on the web, from client-side JavaScript to server-side
languages such as Python, PHP, and Ruby. Unlike statically typed systems,
these languages are very difficult to optimize. Compiled code must be generic
enough to cope with run-time type changes in data flow. Static analysis can
be extremely expensive only to yield conservative guesses. This talk will describe Trace Compilation,
a new method of quickly extracting static types from dynamic code, based on
observing program behavior. This technique allows a Just-In-Time compiler to
generate optimal machine code, akin to Java or C, for performance-critical
paths in dynamic languages. Trace Compilation has been employed in the
JavaScript implementation for the Firefox web browser. _______ David
Anderson is a WPI graduate interested in the design and implementation of
programming languages. He
works on the JavaScript engine at the Mozilla Corporation. Host: Micha Hofri Refreshments
will be served |
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