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InterpreterState -> OptimizedJITState
Switch execution from a fast-startup JIT or interpreter to heavily optimized compiled code on-the-fly during hot path execution.
Problem it solves
High-quality JIT compilers introduce latency on startup, while fast JITs or interpreters produce sub-optimal execution speeds over long periods.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.