* varasm.c (set_implicit_section): New function.
(resolve_unique_section): Use it to set implicit section
for aliases, too.
(get_named_text_section): Use symtab_get_node (decl)->implicit_section
(default_function_section): Likewise.
(decl_binds_to_current_def_p): Constify argument.
* varasm.h (decl_binds_to_current_def_p): Update prototype.
* asan.c (asan_protect_global): Use symtab_get_node (decl)->implicit_section.
* symtab.c (dump_symtab_base): Dump implicit sections.
(verify_symtab_base): Verify sanity of sectoins and comdats.
(symtab_resolve_alias): Alias share the section of its target.
(set_section_1): New function.
(symtab_node::set_section): Move here, recurse to aliases.
(verify_symtab): Check for duplicated symtab lists.
* tree-core.h (implicit_section_name_p): Remove.
* tree-vect-data-refs.c: Include varasm.h.
(vect_can_force_dr_alignment_p): Fix conditional on when
decl bints to current definition; use
symtab_get_node (decl)->implicit_section.
* cgraph.c (cgraph_make_node_local_1): Fix section set.
* cgraph.h (struct symtab_node): Add implicit_section.
(set_section): Rename to ...
(set_section_for_node): ... this one.
(set_section): Declare.
* tree.h (DECL_HAS_IMPLICIT_SECTION_NAME_P): Remove.
* lto-cgraph.c (lto_output_node, lto_output_varpool_node,
input_overwrite_node, input_varpool_node): Stream implicit_section.
* ipa.c (symtab_remove_unreachable_nodes): Do not check symtab before
removal; it will fail in LTO.
* vtable-class-hierarchy.c: Use symtab_get_node (var_decl)->implicit_section.
* optimize.c (cdtor_comdat_group): Fix handling of aliases.
(maybe_clone_body): Move symbol across comdat groups.
* method.c (use_thunk): Copy implicit section flag.
* go/go-gcc.cc (Gcc_backend::global_variable_set_init): Use
symtab_get_node(var_decl)->implicit_section.
* lto.c (read_cgraph_and_symbols): Remove unreachable symbols.
(do_whole_program_analysis): Use verify_symtab.
From-SVN: r211434
