PR middle-end/15700
        * varasm.c (struct alias_pair): Rename from struct output_def_pair.
        (alias_pairs): Rename from output_defs.
        (find_decl_and_mark_needed): Split out from assemble_alias.
        (do_assemble_alias): New.
        (assemble_output_def): Remove.
        (finish_aliases_1, finish_aliases_2): New.
        (process_pending_assemble_output_defs): Remove.
        (assemble_alias): Defer aliases for which we don't yet have a
        non-external decl for the target symbol.
        * passes.c (rest_of_decl_compilation): Register variables with cgraph.
        * cgraphunit.c (cgraph_finalize_compilation_unit): Use finish_aliases_1.        * toplev.c (compile_file): Use finish_aliases_2 instead of
        process_pending_assemble_output_defs.
        * tree.h (finish_aliases_1, finish_aliases_2): Declare.
        (process_pending_assemble_output_defs): Remove.

        * gcc.c-torture/compile/20040323-1.c: Don't xfail for solaris.
        (_rtld_global): New.
        * gcc.dg/weak/weak-3.c (ffoox1f, ffoox1g): Define.
        * gcc.dg/weak/weak-9.c (notf1, notf2, notf3, notf4): Define.

        * gcc.dg/alias-3.c: New.
        * gcc.dg/alias-4.c: New.
        * gcc.dg/alias-5.c: New.
        * gcc.dg/alias-6.c: New.

From-SVN: r96564