2013-11-21  Cary Coutant  <ccoutant@google.com>

gcc/
	* dwarf2out.c (want_pubnames): Don't do pubnames for -g1.
	(add_linkage_name): Don't add linkage name for -g1.
	(decls_for_scope): Process subblocks for -g1.
	(dwarf2out_source_line): Output line tables for -g1.
	(dwarf2out_finish): Likewise.
	* tree-ssa-live.c (remove_unused_scope_block_p): Don't prune
	unused scopes for -g1.
	* opts.c (common_handle_option): Handle -g same as -g2.
	* doc/invoke.texi: Update description for -g1.

gcc/testsuite/
	* gcc.dg/debug/dwarf2/mlt1.c: New test.
	* gcc.dg/debug/dwarf2/mlt2.c: New test.

From-SVN: r205235