[Bug middle-end/33611] [4.1/4.2/4.3 regression] Optimizations generate incorrect code

[macracan at yahoo dot com]

------- Comment #4 from macracan at yahoo dot com  2007-10-01 17:43 -------
(In reply to comment #3)
> For once a real floating point bug. In this code
>     double p = 0.422244 * f[a.e];
>     if (f[0] < p)
> 
> with a.e=1, f[1]=0.285433, we should calculate p=0.285433. Since
> f[0]=0.0461109, we shouldn't enter the if-clause, but we do when

Sorry, but this isn't quite accurate; the math is off, and the code _should_
enter
the if branch the first time around, just not the second time around.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33611