* tree-outof-ssa.c (tree-ssa.h, tree-dfa.h): Include header files.
	(create_default_def, for_all_parms): Moved from tree-ssa-coalesce.c.
	(parm_default_def_partition_arg): Ditto.
	(set_parm_default_def_partition): Ditto.
	(get_parm_default_def_partitions): Ditto and make it static.
	(get_undefined_value_partitions): Ditto and make it static.
	(remove_ssa_form): Refactor call to init_var_map here.
	* tree-ssa-coalesce.c (build_ssa_conflict_graph): Support live range
	computation for loop region.
	(coalesce_partitions, compute_optimized_partition_bases): Ditto.
	(register_default_def): Delete.
	(for_all_parms, create_default_def): Move to tree-outof-ssa.c.
	(parm_default_def_partition_arg): Ditto.
	(set_parm_default_def_partition): Ditto.
	(get_parm_default_def_partitions): Ditto and make it static.
	(get_undefined_value_partitions): Ditto and make it static.
	(coalesce_with_default, coalesce_with_default): Update comment.
	(create_coalesce_list_for_region): New func factored out from
	create_outofssa_var_map.
	(populate_coalesce_list_for_outofssa): New func factored out from
	create_outofssa_var_map and coalesce_ssa_name.
	(create_outofssa_var_map): Delete.
	(coalesce_ssa_name): Refactor to support live range computation.
	* tree-ssa-coalesce.h (coalesce_ssa_name): Change decl.
	(get_parm_default_def_partitions): Delete.
	(get_undefined_value_partitions): Ditto.
	* tree-ssa-live.c (init_var_map, delete_var_map): Support live range
	computation for loop region.
	(new_tree_live_info, loe_visit_block): Ditto.
	(live_worklist, set_var_live_on_entry): Ditto.
	(calculate_live_on_exit, verify_live_on_entry): Ditto.
	* tree-ssa-live.h (struct _var_map): New fields.
	(init_var_map): Change decl.
	(region_contains_p): New.

From-SVN: r260747