processor type.

[David O'Brien]

On Fri, Jan 14, 2005 at 08:43:37AM +0100, Wilko Bulte wrote:
> On Thu, Jan 13, 2005 at 04:26:51PM -0800, David O'Brien wrote..
> > That said, you should remove the -mtune=ev5 or change it to -mtune=ev4.
> > My guess is you won't notice a difference, but this this change will
> > produce the best code for your machine.
> 
> Any idea how drastic -mtune=ev6 would change things on a DS10 (to name
> a random box ;-) ?
> 
> Am I correct in assuming that -mcpu=ev4 will result in not using the BWX
> etc of the newer CPUs?  And that -mcpu=ev6 will result in code that does
> not run on anything older than EV6 due to missing instructions etc?

Yes, you certainly want to use -mcpu=ev6 on your own DS10. :-)
Along with -mtune=ev6 or no -mtune.
 
-- 
-- David  (obrien at FreeBSD.org)