dwarf2out.c (die_struct): Remove die_attr_last and die_child_last.
* dwarf2out.c (die_struct): Remove die_attr_last and die_child_last. (add_dwarf_attr, add_child_die): Just push onto the front. (reverse_die_lists): New fn. (add_sibling_attributes): Use it. (push_decl_scope): Reorganize. (gen_struct_or_union_type_die): Don't add a DW_AT_containing_type that points to ourself. (add_name_and_src_coords_attributes): Don't set file and line for an artificial decl. (gen_subprogram_die): An artificial function doesn't need to match file and line. (gen_compile_unit_die): Return the generated die. Only add AT_comp_dir if the filename is relative. (remove_AT): Simplify loop. Also free string values. (output_die): A DIE ref can't be null. (output_value_format, value_format): Take a dw_attr_ref. (dwarf_last_decl, is_extern_subr_die, sibling_offset): Remove. (AT_class, AT_flag, AT_int, AT_unsigned, AT_string, AT_ref, AT_loc, AT_addr, AT_lbl): New fns. (various): Use them. (various): Constify. From-SVN: r30624
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