Dynamo: a transparent dynamic optimization system
PLDI '00 Proceedings of the ACM SIGPLAN 2000 conference on Programming language design and implementation
The Cartesian Product Algorithm: Simple and Precise Type Inference Of Parametric Polymorphism
ECOOP '95 Proceedings of the 9th European Conference on Object-Oriented Programming
Bigloo: A Portable and Optimizing Compiler for Strict Functional Languages
SAS '95 Proceedings of the Second International Symposium on Static Analysis
LLVM: A Compilation Framework for Lifelong Program Analysis & Transformation
Proceedings of the international symposium on Code generation and optimization: feedback-directed and runtime optimization
Representation-based just-in-time specialization and the psyco prototype for python
Proceedings of the 2004 ACM SIGPLAN symposium on Partial evaluation and semantics-based program manipulation
HotpathVM: an effective JIT compiler for resource-constrained devices
Proceedings of the 2nd international conference on Virtual execution environments
YETI: a graduallY extensible trace interpreter
Proceedings of the 3rd international conference on Virtual execution environments
RPython: a step towards reconciling dynamically and statically typed OO languages
Proceedings of the 2007 symposium on Dynamic languages
Virtual machine showdown: Stack versus registers
ACM Transactions on Architecture and Code Optimization (TACO)
Tracing for web 3.0: trace compilation for the next generation web applications
Proceedings of the 2009 ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
A practical solution for scripting language compilers
Proceedings of the 2009 ACM symposium on Applied Computing
Trace-based just-in-time type specialization for dynamic languages
Proceedings of the 2009 ACM SIGPLAN conference on Programming language design and implementation
Tracing the meta-level: PyPy's tracing JIT compiler
Proceedings of the 4th workshop on the Implementation, Compilation, Optimization of Object-Oriented Languages and Programming Systems
Optimization of dynamic languages using hierarchical layering of virtual machines
DLS '09 Proceedings of the 5th symposium on Dynamic languages
Evaluation of a just-in-time compiler retrofitted for PHP
Proceedings of the 6th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
Towards a jitting VM for prolog execution
Proceedings of the 12th international ACM SIGPLAN symposium on Principles and practice of declarative programming
Proceedings of the ACM international conference on Object oriented programming systems languages and applications
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Current websites are a combination of server-generated dynamic content with client-side interactive programs. Dynamically - typed languages have gained a lot of ground in both of these domains. The growth of Web 2.0 has introduced a myriad of websites which contain personalized content, which is specific to the user. PHP or Python programs generate the actual HTML page after querying a database and processing the results, which are then presented by the browser. It is becoming more and more vital to accelerate the execution of these programs, as this is a significant part of the total time needed to present the page to the user. This paper presents a novel interpreter for the PHP language written in RPython, which the PyPy translator then translates into C. The translator integrates into the interpreter a tracing just-in-time compiler which optimizes the hottest loops in the interpreted programs. We also describe a data model that supports all the data types in the PHP language, such as references and iterators. We evaluate the performance of this interpreter, showing that speedups up to a factor of 8 are observed using this approach.