[Bug rtl-optimization/24123] Massive performance regression for -ffast-math due to the recip tree pass

pinskia at physics dot uc dot edu gcc-bugzilla@gcc.gnu.org
Thu Sep 29 14:32:00 GMT 2005


------- Additional Comments From pinskia at physics dot uc dot edu  2005-09-29 14:32 -------
Subject: Re:  Massive performance regression for -ffast-math due to the recip tree pass

> 
> 
> ------- Additional Comments From uros at kss-loka dot si  2005-09-29 14:25 -------
> (In reply to comment #1)
> > This is really a RA issue rather than anything else.
> 
> Please this patch...

No, the RA is supposed to move the divisions so that things don't spill.

Can you also try the patch at
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg01555.html


-- Pinski


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24123



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