Re: [rc4-amd64] RC4 optimized for AMD64

[Denis Vlasenko]

On Tuesday 02 November 2004 20:52, dean gaudet wrote:
> On Tue, 2 Nov 2004, Denis Vlasenko wrote:
> 
> > On Monday 01 November 2004 22:44, dean gaudet wrote:
> > > note that 
> > > p4 would prefer "sub $1, %r11b" here instead of dec... but the difference 
> > > is likely minimal.
> > 
> > p4 is not the only x86 CPU on the planet. Why should I use
> > longer instruction then?
> 
> you're asking about spending one byte?  one byte extra for code which 
> could perform better on more CPUs?

You're asking about speedup by 1 cycle on a CPU which will be outdated
6 months from now?
--
vda

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