[Vm-dev] VM Maker: VMMaker-dtl.222.mcz

[Bert Freudenberg]

On 19.03.2011, at 19:33, Eliot Miranda wrote:

> I think we urgently need to merge.

Yep.

>  I haven't looked yet but has Interpreter been refactored out from under ObjectMemory?  If it hasn't would you be happy for me to do that?  

That would be awesome!

> Things that I think need to be done to Interpreter are
> 
> a) refactor it out from under ObjectMemory and under InterpreterPrimitives
> b) use NewObjectMemory (it's a tad faster)
> c) throw away four of the method cache fields used only by Jitter, which de facto is now obsolete, and use the StackInterpreter's folding of primitiveIndex and primitiveFunction (it's a tad faster)
> d) also use platform-order floats (it's a tad faster)
> 
> What is useful about Interpreter is
> a) it doesn't need a threaded or interrupt-driven heartbeat so it is simpler to port to bare metal
> b) it uses contexts and lacks all the complexity of context-to-stack mapping and so for many VM experiments it is significantly simpler to understand and extend, and for certain context-intensive computations it may be faster
> 
> So for me its worth keeping all these VMs, but the merge task is tedious and expensive so I would like there to be only one main line.
> 
> are we, the VM devs (Ian, Andreas, David, Igor, Myself, others?) in agreement?

+1

- Bert -


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