2001-05-18 Daniel Berlin <dan@cgsoftware.com>

	* dwarf2out.c: Add dw_loc_list_ref, a reference to a location
	list.
	Add have_location_lists, a variable to determine whether we need a
	.debug_loc section or not.
	(enum dw_val_class): Add dw_val_class_loc_list.
	(dw_val_struct): Add val_loc_list.
	(dw_loc_list_struct): New structure, represents location lists.
	(new_loc_list): New function, return a new location list, given
	the range and location expression.
	(add_loc_descr_to_loc_list): New function, add a location
	expression to a location list, given the expression and range.
	(output_loc_list): New function, output a location list.
	(gen_internal_sym): Modified to take symbol prefix, so we can
	reuse it for location list symbols.
	(add_AT_loc_list): New function, add a location list to a DIE at
	the named attribute.
	(AT_loc_list): New function, return the location list reference
	for a given attribute, if it's a location list.
	(print_die): Handle dw_val_class_loc_list.
	(size_of_die): Ditto.
	(value_format): Ditto.
	(output_die): Ditto.
	(output_location_lists): New function, output all of the location
	lists for a DIE and it's children.
	(dwarf2out_finish): Call output_location_lists if we have location
	lists.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@42266 138bc75d-0d04-0410-961f-82ee72b054a4

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