FP math builtins disabled with --fpmath=sse?

Benjamin Redelings bredelin@ucla.edu
Tue Jan 25 19:45:00 GMT 2005


Paolo Bonzini wrote:

>> Uros Bizjak said that FP math builtins were disabled with 
>> --fpmath=sse, because they were not advantageous on x86_64.
>
>
> Have you tried -mfpmath=sse,387?

Oh, I though this was broken/deprecated.

>
> > However, if this is true, I will not be able to use SSE in my code
> > because I use a lot of log()/exp() calls.  What are the prospects 
> that > math builtins could be re-enabled for *ia32*?
>
> Your time numbers can only help to this end.

I will certainly send some, once I get my code to stop segfaulting under 
4.0!

-BenRI



More information about the Gcc mailing list