[PATCH] Fix some EVRP stupidness

[Aldy Hernandez]

> +	      if (tem.kind () == old_vr->kind ()
> +		  && tem.min () == old_vr->min ()
> +		  && tem.max () == old_vr->max ())
> +		continue;

I think it would be cleaner to use tem.ignore_equivs_equal_p (*old_vr). 
The goal was to use == when the equivalence bitmap should be taken into 
account, or ignore_equivs_equal_p() otherwise.

(Unless you really really don't want to compare the extremes with 
vrp_operand_equal_p.)

Aldy