[virtmach] parrot VM?

[Anton Ertl]

Norman Ramsey wrote:
> 
> The Lua implementors (www.lua.org) claim to have got a performance
> improvement by switching from a stack vm to a register vm (with
> effectively infinitely many registers).

I just looked through the site, and did not find that claim;
http://www.lua.org/history.html is the only place I found that
mentions the VM at all, and only in passing (and only the stack-based
VM).

Using google I found
<http://www.cs.utah.edu/plt/mailarch/plt-scheme-2002/msg00699.html> from
April, which reports that lua has a stack-based VM.

If you remember where you read about the Lua register VM, I would
appreciate a reference.  Thanks in advance,

- anton