[Bug tree-optimization/24123] [4.1 Regression] Massive performance regression for -ffast-math due to the recip tree pass

uros at kss-loka dot si gcc-bugzilla@gcc.gnu.org
Fri Sep 30 12:44:00 GMT 2005


------- Additional Comments From uros at kss-loka dot si  2005-09-30 12:44 -------
(In reply to comment #12)
> Here is a list of all the differences between the two profiles.  r is the time
> with recip, nr is without, nr-r is the difference.
> 
> r       nr      nr-r    func
> 1.28    1.50    0.22    pov::sbisect(int,

It looks to me that header is reversed! pov::sbisect is 1.50 _with_ recip.

IMHO header should look:

 nr      r      nr-r    func
 1.28    1.50    0.22    pov::sbisect(int,
 ...

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



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