Re: Stop the madness (Re: -= PROPOSAL =- Release sarge with amd64)

[Falk Hueffner <hueffner@informatik.uni-tuebingen.de>]

Stephen Frost <sfrost@snowman.net> writes:

> * Florian Weimer (fw@deneb.enyo.de) wrote:
> > Do you know if Intel's chips with their 64 bit extension are able
> > to execute the current AMD64 binaries, with reasonable
> > performance?
> 
> The current expectation is that they certainly will be able to.  I
> havn't heard of any reasoning as to why there'd be any trouble there
> at all.

Firstly, there might be bugs in Intel's implementation. Secondly, lots
of parameters like instruction latency, functional units, and branch
penalty are different. All these are currently only optimized for
AMD's chips in gcc. It's hard to judge how much difference it makes,
though, since Intel preferred to not publicise technical documents and
instead pours scary amounts of money into making their compiler gcc
compatible.

-- 
	Falk