Abstract: Program code in a dynamic language is executed through a dynamic execution module that includes an execution context and an execution codebase. The instructions of the program code are translated into machine code that is stored in the execution codebase, and the execution context tracks the runtime state and persistent state of the program through executions and across executions. Using the execution codebase and the execution context the dynamic execution module minimizes duplicative machine code generation, while preserving the dynamic aspects of the program.