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: -msse producing sse2 instructions


On Sunday 21 July 2002 11:42, Jan Hubicka wrote:
> 
> > -march=pentium3 doesn't set x86_partial_reg_dependency as =athlon and
> > =pentium4 do.  This is the flag which tells gcc to use movaps for
> > register to register moves.  This sometimes causes sse code to be slower
> > than 387 code. If it were not for this problem, -march=pentium3 would be
> > a good common denominator for P3/P4/AthlonMP.
>
> I have patch for this problem.  I will commit it soon.
>
Thanks.

-- 
Tim Prince


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