r187116 - in /trunk/gcc: ChangeLog dwarf2out.c ...

[jason@gcc.gnu.org]

Author: jason
Date: Thu May  3 19:55:16 2012
New Revision: 187116

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187116
Log:
	* dwarf2out.c (struct external_ref, build_local_stub): New.
	(hash_external_ref, external_ref_eq, lookup_external_ref): New.
	(optimize_external_refs, optimize_external_refs_1): New.
	(change_AT_die_ref): New.
	(clone_as_declaration): Add DW_AT_signature when cloning a declaration.
	(build_abbrev_table): Take the external refs hashtable.
	(output_comp_unit): Get it from optimize_external_refs and pass it in.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2out.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/debug/dwarf2/nested-3.C