This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: A 2 % gain for the past week on my code.


Jack Howarth wrote:

Toon,
   I would suspect this boost is from the series of changes
to "Update default arch for x86" from HJ Lu. This should now
have -msse2 in use as the default (except on darwin where
we went to -msse3 since all of our processors support that).

That could well be. I now configure as follows:


--with-arch-64=native --with-tune-64=native

as opposed to:

--with-arch-64=core2 --with-tune-64=core2

previously.

--
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
At home: http://moene.org/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]