Re: Optimization flags
Richard Brooklyn <[email protected]> Mon, 28 Mar 2005 06:03:56 +0100
| Newsgroups | gmane.linux.mandrake.cooker.amd64 |
|---|---|
| Organization | Private User |
| Message-ID | <[email protected]> |
On Sunday 27 Mar 2005 12:24, Giuseppe Ghibò wrote:
> so, how about to increase to:
>
> optflags: x86_64 -O2 -msse -msse2 -mfpmath=sse -pipe %{debugcflags}
>
> or
>
> optflags: x86_64 -O2 -msse -msse2 -mfpmath=sse,387 -pipe %{debugcflags}
the mftpmath line you specify here will actually slow down programmes quiet a
lot.
You also have to consider what you're going to non amd64 cpus, namely the IA64
from Intel. Whilst you may speed up stuff for amd64 users, you may have a
negative impact for IA64 users.
Regards,
-Ribs.