loop.c (check_final_value): Use v->always_executed instead of v->always_computable.

loop.c (check_final_value): Use v->always_executed instead of v->always_computable.

	* loop.c (check_final_value): Use v->always_executed
	instead of v->always_computable.
	* unroll.c (final_giv_value): Don't calculate the final
	value as a function of the biv if the giv is not computed
	for every loop iteration.

From-SVN: r54634