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Re: Promoting i386 version over x86_64?



On Tuesday, 08 December 2009 at 20:07, Jon Masters wrote:
> On Tue, 2009-12-08 at 18:41 +0100, drago01 wrote:
> > On Tue, Dec 8, 2009 at 5:27 PM, Rallias UberNerd
> 
> > > But wouldn't it be better to use 32 bit when less then 4 GB of ram is
> > > present?
> > 
> > no, using x86_64 means more registers, sse2 as default floating point
> > instruction set, better calling convention (register passing vs.
> > stack) or in other words in most cases faster code.
> 
> Indeed. Intel 64 (x86_64) is really a different animal. More registers,

Actually, x86_64 is an AMD invention (originally called AMD64)
and is called EM64T by Intel. The only "Intel 64" I can think of
is IA64, i.e. Itanium (called "Itanic" by some).

Regards,
R.

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