Re: Why is GForth-ITC fast?

On Thu, 01 May 2008 10:54:45 GMT, anton@[EMAIL PROTECTED]
(Anton Ertl) wrote:

>Yes, cache consistency issues are usually a good candidate for
>explaining unexpected slowdowns.  However, I would not expect that to
>play a significant role with ITC on modern CPUs (it is pretty bad with
>traditional ITC on Pentium, Pentium MMX, and K6 series CPUs).

I'm getting tempted to argue that if you're using ITC, you
aren't interested in performance <grin>. The instruction
techniques that improve ITC are applicable to all models.

After doing the VFX code generator, my conclusion is that
learning code generation was the time consuming ****tion.
Writing new ones takes n weeks, where n is 1..6 depending
on the architecture ... and all the successful ones have
become baroque.

If quick CPU ****tability was my goal, and if I were to
start such a project now, I would be tempted to focus on
writing an adequate code generator rather than a good
one.

Stephen


-- 
Stephen Pelc, stephenXXX@[EMAIL PROTECTED]
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