http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57223
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-09-26
Ever confirmed|0 |1
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #5)
> (In reply to Usishchev Yury from comment #3)
> > I'm testing it on current trunk, and second loop is not vectorized both with
> > floating point and integer types.
> > For floating point types it is not vectorized due to control flow in loop:
> >
> > <bb 15>:
> > // ...
> > if (t_56 > _61)
> > goto <bb 16>;
> > else
> > goto <bb 17>;
> > <bb 16>:
> > <bb 17>:
> > # iftmp.2_7 = PHI <_61(16), t_56(15)>
> >
> > This can be optimized to MIN_EXPR in phiopt pass, but is not because of
> > NaNs:
>
> Even without MIN_EXPR, ifcvt should turn this into a COND_EXPR that can be
> vectorized, no?
I think it is. Both loops are vectorized with -O3 -fno-tree-pre and test_t ==
float on x86_64.
Confirmed for the PRE issue.
