2016-09-16  Richard Biener  <rguenther@suse.de>

	* dwarf2out.c (early_dwarf_finished): New global.
	(set_early_dwarf::set_early_dwarf): Assert early_dwarf_finished
	is false.
	(dwarf2out_early_finish): Set early_dwarf_finished at the end,
	if called from LTO exit early.
	(dwarf2out_late_global_decl): When being during the early
	debug phase do not add locations but only const value attributes.
	Adjust the way we generate early DIEs for LTO.

	lto/
	* lto.c (lto_main): Invoke early_finish debug hook.

From-SVN: r240228