Compute once and cache the LB and UB for each clast_name.

Compute once and cache the LB and UB for each clast_name.

2011-07-21  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-clast-to-gimple.c (struct clast_name_index): Add lb
	and ub fields.
	(new_clast_name_index): Add lb and ub parameters.
	(free_clast_name_index): New.
	(clast_name_to_lb_ub): New.
	(save_clast_name_index): Add lb and ub parameters.
	(compute_bounds_for_param): New.
	(type_for_level): Removed.
	(type_for_clast_for): Removed level parameter.  Do not call
	type_for_level.
	(graphite_create_new_loop): Store the lb and ub for the clast_name
	of the iterator of the loop that has been generated.
	(graphite_create_new_loop_guard): Remove parameter level.
	(create_params_index): Store the lb and ub of each parameter.
	(gloog): Use free_clast_name_index.  Pass to create_params_index
	the current scop.

From-SVN: r176603