Explicit Software Speculation for Dynamic Language Runtimes
Riley, Nicholas J.
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https://hdl.handle.net/2142/81856
Description
Title
Explicit Software Speculation for Dynamic Language Runtimes
Author(s)
Riley, Nicholas J.
Issue Date
2009
Doctoral Committee Chair(s)
Zilles, Craig
Department of Study
Computer Science
Discipline
Computer Science
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Computer Science
Language
eng
Abstract
I demonstrate that explicit speculation improves the performance of dynamic language implementations on existing managed runtimes by speculatively executing dynamic language code with a common case interpretation of the language semantics. I implement a variety of optimizations at a high level, maintaining correct execution without requiring the sophisticated static analysis, language-specific runtime profiling infrastructure or potentially intricate, low-level recovery code that would be otherwise necessary. In addition, I explore how explicit speculation can guarantee speculative optimization correctness in an unmanaged dynamic language runtime by utilizing additional hardware support for fine-grain memory protection.
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