Re: stack vs. storage-to-storage

[leif@xxxxxxxxxxxxx]

> Actually, while you were certainly able to hand-optimize the MI version
> quite a ways, you violated the MI architecture by not storing the
> results in the temporary variables.  <tsk, tsk> <G> 

I don't think that the MI architecture requires you to store variables
you don't use. I would confess, that since I don't use x and y
either, the whole program could be optimized away. I have
written compiler optimizers and know what is possible.
Maybe it is a bit *easier* to optimize a stack machine...
Anyway, in the vast majority of RPG type applications
there are hardly much gained by optimizing complicated
expressions. I think it was Donald Knuth that first
showed about 30 years ago that 97% of all expressions
involved less that three operands, so there is little to
optimize.

But, as I started out by saying, you did have a point.

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