2017-08-22  Richard Biener  <rguenther@suse.de>

	* common.opt (feliminate-dwarf2-dups): Ignore.
	* doc/invoke.texi (feliminate-dwarf2-dups): Remove documentation.
	* dwarf2out.c (push_new_compile_unit, pop_compile_unit,
	same_die_p_wrap, compute_section_prefix,
	is_symbol_die, assign_symbol_names, break_out_includes): Remove.
	(comdat_symbol_id, comdat_symbol_number): Likewise.
	(cu_hash_table_entry, cu_hash_table_entry_hasher, cu_hash_type):
	Likewise.
	(check_duplicate_cu, record_comdat_symbol_number): Likewise.
	(output_die): Mark unreachable path unreachable.
	(dwarf2out_start_source_file): Do not create DW_TAG_GNU_BINCL.
	(dwarf2out_end_source_file): Do not create DW_TAG_GNU_EINCL.
	(dwarf2out_init): Remove code handling flag_eliminate_dwarf2_dups.
	(dwarf2out_early_finish): Likewise.

	* g++.dg/debug/dwarf2/dwarf2-1.C: Remove -feliminate-dwarf2-dups.
	* g++.dg/debug/dwarf2/dwarf2-2.C: Likewise.
	* g++.dg/debug/dwarf2/pr46123-2.C: Likewise.
	* g++.dg/debug/dwarf2/typedef5.C: Likewise.
	* gcc.dg/debug/dwarf2/dwarf2-3.c: Likewise.
	* gcc.dg/debug/dwarf2/dwarf2-3.h: Likewise.
	* gcc.dg/debug/dwarf2/dups-types.c: Remove.
	* gcc.dg/debug/dwarf2/dups-types.h: Likewise.

From-SVN: r251262