Macro for non-interactive 'compiled mode'

Would it be possible to add macros to activate/deactivate 'compiled mode' in a similar way to the breakpoint macro @bp?

For example, if I have a program that has a lot of initialization, which takes a very long time in the interpreter, I think it would be nice to be able to do something like

function main()
    @enter_compiled_mode
    <A bunch of calls to expensive initialization functions>
    @exit_compiled_mode
    # Now we can run in the interpreter until we hit @bp
    <Code that does stuff...>
end

Start by locating the existing breakpoint macro @bp and the code paths that control interpreter versus compiled execution. The feature is done when paired macros can activate compiled execution for the initialization section and restore interpreter execution afterward, but the issue names no files or tests to guide verification.