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Dynamic or Just-In-Time (JIT) compilation is crucial to achieve acceptable performance for applications written in traditionally interpreted languages, such as Java and C#. Such languages enable the generation of portable applications that are written and compiled once, and can be executed by a virtual machine on any supported architecture. However, by virtue of occurring at runtime, dynamic compilation adds to the overall execution time of the application, and can potentially slow down program execution if performed injudiciously. Selective compilation is a technique that was developed for single-core architectures to manage the compilation overhead by dynamically determining and compiling only the most critical program regions.
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