Re: Recompiling packages for Pentium.
On Sun, 6 Jul 1997, Shaya Potter wrote:
> > > I'm in favour of this - as long as the packages compiled for the 386 are
> > > still available. I've got a few 386's and 486's that are running Debian.
> > Could someone please confirm weather pgcc actually makes use of any
> > pentium specific instructions?
> I don't think that their are many "pentium specific instructions." The
There are some that would be usefull in application level code, but not
> major additions to x86 instruction set came with MMX. The way the pentium
> is faster is that if you load the pipeline right, and do other stuff, the
> pentium has features that speed it along, if you don't, it's probably hit
> or miss.
Exactly, 'P5' code will run 100% fine on a 386, but it won't be quite as
fast as 386 code. Depending on the program it might be just as fast or
Optimization is really alot of black majic these days :> Anyhow, I wonder
the benifit of recompiling everything for P5? How much code do we have
that sits on a P5's CPU for more than a second with straight computations?
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