Yep!

  help?> Base.Experimental.@optlevel
    Experimental.@optlevel n::Int

    Set the optimization level (equivalent to the -O command line argument) for code in
    the current module. Submodules inherit the setting of their parent module.

    Supported values are 0, 1, 2, and 3.

    The effective optimization level is the minimum of that specified on the command line
    and in per-module settings.