Dynamic recompilation Guide, Meaning , Facts, Information and Description
In computer science, dynamic recompilation is a feature of some emulators and virtual machines, where the system may recompile some part of a program during execution. By compiling during execution, the system can tailor the generated code to reflect the program's run-time environment, and perhaps produce more efficient code by exploiting information that is not available to a traditional static compiler. In other cases, a system may employ dynamic recompilation as part of an adaptive optimization strategy to execute a portable program representation such as Java or CLR bytecodes.Many implementations of Java feature dynamic compilation, at least in the more advanced VMss.
The HP Dynamo project is an example of a transparent binary dynamic optimizer.
The emulator used in Mac OS to run 680x0 code on the PowerPC hardware was a dynamically recompiling emulator. Virtual PC for Mac, used to run x86 code on PowerPC, is another example.
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