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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Paul Jakma <paul@xxxxxxxxxx> writes:
> 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?

Pretty much everything, actually.  The x86 ISA completely sucks.

			regards, tom lane

-- 
fedora-devel-list mailing list
fedora-devel-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/fedora-devel-list

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Fedora Announce]     [Fedora Kernel]     [Fedora Testing]     [Fedora Formulas]     [Fedora PHP Devel]     [Kernel Development]     [Fedora Legacy]     [Fedora Maintainers]     [Fedora Desktop]     [PAM]     [Red Hat Development]     [Gimp]     [Yosemite News]
  Powered by Linux