Substrate VM Questions

[Tom Shull]

Hi,

     I am interested in using Substrate VM for a project in which I plan 
to make some changes to the internal JVM object layout. I would like to 
use a metacircular VM, as I feel they are much more amenable to these 
types of changes as compared to HotSpot.  Looking at its GitHub page, 
there currently seems to be very little  documentation relating to 
Substrate VM. I have appreciated the many publications/talks covering 
both Truffle and Graal, but there does not yet seem to be any for 
Substrate VM. Do you plan to include more documentation and/or publish 
papers in the near future?

Also, from what I can tell, it appears that unless Substrate VM is used 
with Truffle, it does not JIT-compile code. Is this correct? Do you plan 
to change this in the near future, by either adding JIT support to 
Substrate VM or including a Java/JVM implementation in Truffle? Would I 
be better off using Maxine VM instead? Ideally I would like JIT 
capabilities so that I can also add some profile-guided speculative 
optimizations.

Thanks
-Tom