* dwarf2out.c (dw_val_class): Add dw_val_class_range_list.

	* dwarf2out.c (dw_val_class): Add dw_val_class_range_list.
	(DEBUG_RANGES_SECTION_LABEL): Define.
	(ranges_section_label): Add.
	(add_AT_range_list): New.
	(print_die, sizeof_die, value_format): Handle dw_val_class_range_list.
	(output_loc_list): Location expression length is always 2-byte.
	(output_die): Handle dw_val_class_range_list.
	(gen_lexical_block_die): Call add_AT_range_list.
	(dwarf2out_init): Initialize ranges_section_label.
	(dwarf2out_finish): Emit ranges_section_label.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@47946 138bc75d-0d04-0410-961f-82ee72b054a4