Cranelift: incremental jit compilation

I would like to use the jit module, to compile and run language macros. It would be nice if there a way so serialize the module and just load it next time and overwrite updated functions.

I was thinking about saving the functions as bytes and then reusing these if nothing changed as JitModule does not offer any methods for this purpose. (Is this a good idea?)

The main reason for this is a fact that compiler needs to just build a module tree and skip unchanged branches instead of rejitting everything to achieve incremental build. (building the module tree requires parsing only first item inside a file which is considerably cheaper the building Ast for all items)