Convert profile probabilities to new type

[Jan Hubicka]

> 
> After the change, edges that fail the predicate contribute REG_BR_PROB_BASE in
> the upper hunk, but 0 in the lower hunk. Before the change, they contributed 0
> in both cases.
> 
> The following patch should restore things:
> 
> diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c
> index dd72828..fa88259 100644
> --- a/gcc/sel-sched-ir.c
> +++ b/gcc/sel-sched-ir.c
> @@ -4747,8 +4747,10 @@ compute_succs_info (insn_t insn, short flags)
>            sinfo->probs_ok.safe_push (
>  		    /* FIXME: Improve calculation when skipping
>                         inner loop to exits.  */
> -                    si.bb_end && si.e1->probability.initialized_p ()
> -		    ? si.e1->probability.to_reg_br_prob_base ()
> +                    si.bb_end
> +		    ? (si.e1->probability.initialized_p ()
> +                       ? si.e1->probability.to_reg_br_prob_base ()
> +                       : 0)
>  		    : REG_BR_PROB_BASE);
>            sinfo->succs_ok_n++;
>          }

Ah, thanks!  This looks OK to me.
I was not quite sure what to do with missing probabilities in this case.

Honza