Re: Fixes to estimate_num_insns from pretty-ipa branch

[Jan Hubicka <hubicka at ucw dot cz>]

> Hi,
> 
> >   6) Esimated_unrolled_size have off-by-one bug.  When loop iterates 4 times, it is estimating
> >      inlined body size as containing 5 copies.
> 
> this is actually correct.  Number of iterations of a loop as passed to
> estimated_unrolled_size is the number of executions of a latch edge.
> Since the exit edge is expected to be after loop body, if latch
> is executed 4 times, then the body will be executed 5 times.

Hmm, isn't there problem that the loop condition is at end of body?

I definitly had looop for (i=0;i<4;i++) body and the code multiplied
body estimate by 5.  I will take a look again today.

Honza
> 
> Zdenek