> >
> > if (expected_loop_iterations_reliable_p (loop))
> > niters = expected_loop_iterations (loop);
>
> But why not simply never return bogus values from expected-loop-iterations?
Hmm, actually we do have:
/* If we have a measured profile, use it to estimate the number of
iterations.
On May 23, 2014 7:26:04 PM CEST, Jan Hubicka wrote:
>> On Thu, May 22, 2014 at 11:36 PM, Dehao Chen
>wrote:
>> > If a loop's header count is less than iteration count, the
>iteration
>> > estimation is apparently incorrect for this loop. Thus disable
>> > unrolling of such loops.
>> >
>> > Testin
> On Thu, May 22, 2014 at 11:36 PM, Dehao Chen wrote:
> > If a loop's header count is less than iteration count, the iteration
> > estimation is apparently incorrect for this loop. Thus disable
> > unrolling of such loops.
> >
> > Testing on going. OK for trunk if test pass?
>
> No. Why don't yo
On Thu, May 22, 2014 at 11:36 PM, Dehao Chen wrote:
> If a loop's header count is less than iteration count, the iteration
> estimation is apparently incorrect for this loop. Thus disable
> unrolling of such loops.
>
> Testing on going. OK for trunk if test pass?
No. Why don't you instead plug t
