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

[Paul Jakma <paul dishone st>]

On Wed, 18 Nov 2009, Roland McGrath wrote:

> 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.

For what percentage of code is that an appreciable advantage?

regards,
--
Paul Jakma	paul jakma org	Key ID: 64A2FF6A
Fortune:
QOTD:
	"If he learns from his mistakes, pretty soon he'll know everything."