x86-64 on i386 (was Re: Promoting i386 version over x86_64?)

[Jeff Garzik]

On 11/18/2009 09:56 PM, Roland McGrath wrote:
>> Another data point for this thread:
>
> x86 is unlike other architectures because 64-bit also has twice as many
> registers as 32-bit.  So you get to trade off the benefits of register
> allocation across more registers against the memory/cache footprint of
> 64-bit pointers.

Absolutely.  x86-64 is definitely one of my favorite ISAs.  Worlds 
improvement from i386.

	Jeff