Correct many new ABI issues regarding vbase and vcall offset
layout.
* cp-tree.h (BINFO_VTABLE): Document.
(struct lang_type): Tweak formatting.
(BINFO_PRIMARY_BINFO): Add to documentation.
(CLASSTYPE_VSIZE): Fix typo in comment.
(CLASSTYPE_VBASECLASSES): Update documentation.
(BINFO_VBASE_MARKED): Remove.
(SET_BINFO_VBASE_MARKED): Likewise.
(CLEAR_BINFO_VBASE_MARKED): Likewise.
(BINFO_FIELDS_MARKED): Remove.
(SET_BINFO_FIELDS_MARKED): Likewise.
(CLEAR_BINFO_FIELDS_MARKED): Likewise.
(enum access_kind): New enumeration.
(num_extra_vtbl_entries): Remove declaration.
(size_extra_vtbl_entries): Likewise.
(get_vtbl_decl_for_binfo): New function.
(dfs_vbase_unmark): Remove declaration.
(mark_primary_bases): Likewise.
* class.c (SAME_FN): Remove.
(struct vcall_offset_data_s): Move definition.
(build_vbase_pointer): Use `build', not `build_binary_op', to
access the vbase pointer under the new ABI.
(build_vtable_entry_ref): Use get_vtbl_decl_for_binfo.
(build_primary_vtable): Likewise.
(dfs_mark_primary_bases): Move here from search.c.
(mark_primary_bases): Likewise.
(determine_primary_bases): Under the new ABI, don't make a base
class a primary base just because we don't yet have any virtual
functions.
(layout_vtable_decl): Use get_vtbl_decl_for_binfo.
(num_vfun_entries): Remove.
(dfs_count_virtuals): Likewise.
(num_extra_vtbl_entries): Likewise.
(size_extra_vtbl_entries): Likewise.
(layout_virtual_bases): Iterate in inheritance graph order under
the new ABI.
(finish_struct_1): Use TYPE_VFIELD, not CLASSTYPE_VSIZE, to
indicate that a vfield is present.
(init_class_processing): Initialize access_public_node, etc., from
ak_public, etc.
(get_vtbl_decl_for_binfo): New function.
(dump_class_hierarchy_r): Likewise.
(dump_class_hierarchy): Use it.
(finish_vtbls): Build the vtbls in inheritance graph order.
(dfs_finish_vtbls): Adjust call to build_vtbl_initializer.
(initialize_vtable): Use get_vtbl_decl_for_binfo.
(accumulate_vtbl_inits): Add comments explaining why a pre-order
walk is required.
(dfs_accumulate_vtbl_inits): Set BINFO_VTABLE to the location
where the vptr points, even for primary vtables.
(build_vtbl_initializer): Adjust handling of vbase and vcall
offsets.
(build_vcall_and_vbase_vtable_entries): New function.
(dfs_build_vbase_offset_vtbl_entries): Remove.
(build_vbase_offset_vtbl_entries): Reimplement.
(dfs_build_vcall_offset_vtbl_entries): Don't include virtuals that
were already handled in a primary base class vtable.
(build_vcall_offset_vtbl_entries): Adjust.
(build_rtti_vtbl_entries): Adjust.
* decl2.c (output_vtable_inherit): Use get_vtbl_decl_for_binfo.
* init.c (expand_virtual_init): Simplify.
* repo.c (repo_get_id): Use get_vtbl_decl_for_binfo.
* rtti.c (create_pseudo_type_info): Adjust calculation of vptr.
* search.c (BINFO_ACCESS): New macro.
(SET_BINFO_ACCESS): Likewise.
(dfs_access_in_type): Manipulate access_kinds, not access nodes.
(access_in_type): Likewise.
(dfs_accessible_p): Likewise.
(protected_accessible_p): Likewise.
(lookup_fnfields_1): Adjust documentation.
(dfs_mark_primary_bases): Move to class.c
(mark_primary_bases): Likewise.
(dfs_vbase_unmark): Remove.
(virtual_context): Use BINFO_FOR_VBASE.
(dfs_get_vbase_types): Simplify.
(dfs_build_inheritance_graph_order): New function.
(get_vbase_types): Use it.
* tree.c (debug_binfo): Use get_vtbl_decl_for_binfo.
* tinfo.cc (get_vbase_offset): New function.
(__vmi_class_type_info::do_find_public_src): Use it.
(__vmi_class_type_info::do_dyncast): Likewise.
(__vmi_class_type_info::do_upcast): Likewise.
From-SVN: r32905
