Re: GCC 3.3.1 + Pentium 4

[Jens Rehsack]

Mo wrote:

If anyone knows how to make it use Pentium 4 optimizations, please let 
me know.  By the way, if this is a mailing list, I am not subscribed, so 
please CC all replies to my e-mail address.
Hi Mo,

at first I consider you ask those questions in the current@ list,
because it's not a generic bsd question but a current optimization
one. Next I recommend to read the archives of current@, because
someone else asked the same and got an answer. And last but not
least I think if you care about such themes, you should subscribe
as well to current@ and maybe question@, too.
Best,
Jens
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GCC 3.3.1 + Pentium 4

[Mo]

I recently cvsupped my -CURRENT box (about a day ago), and I noticed 
that GCC 3.3.1 had been imported, so I decided to buildworld so I can 
use Pentium 4 optimizations when compiling ports and other things.  I 
have p4 set for CPUTYPE in /etc/make.conf , but when I compile anything, 
it uses -march=pentium3.  I know this was changed because GCC 3.2.2 used 
to produce broken code when pentium4 optimizations were set, but now 
that GCC 3.3.1 is imported, shouldn't this be resolved?

http://www.freebsd.org/releases/5.1R/relnotes-i386.html#CONTRIB (under GCC):

*GCC* has been updated to 3.2.2 (release version).

   *Note:* *GCC* is known to produce broken code with the
   -march=pentium4 option set. As a workaround to avoid this problem,
   setting the CPUTYPE=p4 Makefile variable (for example, in
   make.conf(5)
   
http://www.FreeBSD.org/cgi/man.cgi?query=make.confsektion=5manpath=FreeBSD+5.1-release)
   enables GCC's -march=pentium3 option instead. This situation is
   expected to be resolved when GCC 3.3 is imported.
If anyone knows how to make it use Pentium 4 optimizations, please let 
me know.  By the way, if this is a mailing list, I am not subscribed, so 
please CC all replies to my e-mail address.

Thank you, I appreciate it.



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