[ColorForth] drop/dup Optimization

[Kristopher Johnson <kristopher_d_johnson@xxxxxxxxx>]

--- Jeff Fox <fox@xxxxxxxxxxxxxxxxxxx> wrote:

> > Or maybe I'm missing something related to the caching 
> > of the top-of-stack in EAX.  Or maybe the optimization 
> > is more sophisticated, being triggered only in
> > situations where "DROP DUP" really is a no-op.
> 
> You may have just been expecting it to be more complicated than
> it really is.  It really is quite simple.
> 
> Jeff Fox

OK, maybe I just misinterpreted what it said on Chuck's page.  I assumed it
meant that every occurrence of "DROP DUP" would be eliminated.  If it only
happens in certain cases (like for 0, -1, and other literals), where the value
being DUP-ed doesn't matter, then I'm not worried.

-- Kris


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