--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/objc/objc-next-metadata-tags.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,172 @@
+/* Declarations for meta-data attribute tags.
+   Copyright (C) 2011-2017 Free Software Foundation, Inc.
+   Contributed by Iain Sandoe
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* These are identifiers used to flag meta-data attributes such that they
+   survive LTO and might be placed in correct sections for the target.  */
+
+enum objc_runtime_tree_index
+{
+  OCTI_RT_OBJC_META,
+  OCTI_RT_META_BASE,
+
+  OCTI_RT_META_CLASS,
+  OCTI_RT_META_METACLASS,
+  OCTI_RT_META_CATEGORY,
+  OCTI_RT_META_PROTOCOL,
+
+  OCTI_RT_META_CLASS_CLS_VARS,
+  OCTI_RT_META_CLASS_NST_VARS,
+
+  OCTI_RT_META_CLASS_CLS_METH,
+  OCTI_RT_META_CLASS_NST_METH,
+  OCTI_RT_META_CATEG_CLS_METH,
+  OCTI_RT_META_CATEG_NST_METH,
+  OCTI_RT_META_PROTO_CLS_METH,
+  OCTI_RT_META_PROTO_NST_METH,
+
+  OCTI_RT_META_CLASS_PROT,
+  OCTI_RT_META_CATEG_PROT,
+  OCTI_RT_META_PROT_REFS,
+
+  OCTI_RT_META_MSG_REFS,
+  OCTI_RT_META_SEL_REFS,
+
+  OCTI_RT_META_CLSLST_REFS,
+  OCTI_RT_META_CLASS_REF,
+  OCTI_RT_META_SUPER_REF,
+  OCTI_RT_META_CLSLST_NLZY_LAB,
+  OCTI_RT_META_CLSLST_LAB,
+  OCTI_RT_META_LAB_PROTOLIST,
+  OCTI_RT_META_LAB_NLZY_CAT,
+  OCTI_RT_META_LAB_CAT,
+
+  OCTI_RT_META_PROPERTY_LIST,
+  OCTI_RT_META_PROTOCOL_EXT,
+  OCTI_RT_META_CLASS_EXT,
+
+  OCTI_RT_META_CLASS_NAME,
+  OCTI_RT_META_METHD_NAME,
+  OCTI_RT_META_METHD_TYPE,
+  OCTI_RT_META_PROPN_ATTR,
+
+  OCTI_RT_META_MODULES,
+  OCTI_RT_META_SYMTAB,
+  OCTI_RT_META_INFO,
+
+  OCTI_RT_META_EHTYPE,
+
+  OCTI_RT_META_CONST_STR,
+
+  OCTI_RT_META_MAX
+};
+
+/* Tags for the META data so that the backend can put them in the correct
+   sections for targets/runtimes (Darwin/NeXT) that require this.
+   This information also survives LTO - which might produce mixed language
+   output.  */
+
+/* Objective-C meta data attribute tag */
+#define objc_meta	objc_rt_trees[OCTI_RT_OBJC_META]
+/* Attribute values, base = default section. */
+#define meta_base	objc_rt_trees[OCTI_RT_META_BASE]
+
+  /* CLASS.  */
+#define meta_class	objc_rt_trees[OCTI_RT_META_CLASS]
+ /* METACLASS.  */
+#define meta_metaclass	objc_rt_trees[OCTI_RT_META_METACLASS]
+  /* CLASS.  */
+#define meta_category	objc_rt_trees[OCTI_RT_META_CATEGORY]
+  /* PROTOCOL.  */
+#define meta_protocol	objc_rt_trees[OCTI_RT_META_PROTOCOL]
+
+ /* Class class vars section.  */
+#define meta_clac_vars	objc_rt_trees[OCTI_RT_META_CLASS_CLS_VARS]
+ /* Class instance vars section.  */
+#define meta_clai_vars	objc_rt_trees[OCTI_RT_META_CLASS_NST_VARS]
+ /* Class class methods section.  */
+#define meta_clac_meth	objc_rt_trees[OCTI_RT_META_CLASS_CLS_METH]
+ /* Class instance methods section.  */
+#define meta_clai_meth	objc_rt_trees[OCTI_RT_META_CLASS_NST_METH]
+ /* Category class methods section.  */
+#define meta_catc_meth	objc_rt_trees[OCTI_RT_META_CATEG_CLS_METH]
+ /* Category instance methods section.  */
+#define meta_cati_meth	objc_rt_trees[OCTI_RT_META_CATEG_NST_METH]
+#define meta_proto_cls_meth \
+			objc_rt_trees[OCTI_RT_META_PROTO_CLS_METH]
+#define meta_proto_nst_meth \
+			objc_rt_trees[OCTI_RT_META_PROTO_NST_METH]
+
+ /* Class protocols.  */
+#define meta_clas_prot	objc_rt_trees[OCTI_RT_META_CLASS_PROT]
+ /* Category protocols.  */
+#define meta_catg_prot	objc_rt_trees[OCTI_RT_META_CATEG_PROT]
+ /* Protocol references.  */
+#define meta_proto_ref	objc_rt_trees[OCTI_RT_META_PROT_REFS]
+
+ /* Message refs.  */
+#define meta_mref	objc_rt_trees[OCTI_RT_META_MSG_REFS]
+ /* Selector refs.  */
+#define meta_sel_refs	objc_rt_trees[OCTI_RT_META_SEL_REFS]
+
+ /* Class list refs.  */
+#define meta_class_ref	objc_rt_trees[OCTI_RT_META_CLSLST_REFS]
+#define meta_class_reference \
+			objc_rt_trees[OCTI_RT_META_CLASS_REF]
+#define meta_superclass_ref \
+			objc_rt_trees[OCTI_RT_META_SUPER_REF]
+ /* Class list Label.  */
+#define meta_label_classlist \
+			objc_rt_trees[OCTI_RT_META_CLSLST_LAB]
+ /* Class list Label (non lazy).  */
+#define meta_label_nonlazy_classlist \
+			objc_rt_trees[OCTI_RT_META_CLSLST_NLZY_LAB]
+#define meta_label_categorylist \
+			objc_rt_trees[OCTI_RT_META_LAB_CAT]
+#define meta_label_nonlazy_categorylist \
+			objc_rt_trees[OCTI_RT_META_LAB_NLZY_CAT]
+
+#define meta_label_protocollist \
+			objc_rt_trees[OCTI_RT_META_LAB_PROTOLIST]
+
+
+/* V1 - property list.  */
+#define meta_proplist	objc_rt_trees[OCTI_RT_META_PROPERTY_LIST]
+#define meta_protocol_extension \
+			objc_rt_trees[OCTI_RT_META_PROTOCOL_EXT]
+#define meta_class_extension \
+			objc_rt_trees[OCTI_RT_META_CLASS_EXT]
+ /* String sections.  */
+#define meta_class_name	objc_rt_trees[OCTI_RT_META_CLASS_NAME]
+#define meta_meth_name	objc_rt_trees[OCTI_RT_META_METHD_NAME]
+#define meta_meth_type	objc_rt_trees[OCTI_RT_META_METHD_TYPE]
+#define meta_prop_name_attr \
+			objc_rt_trees[OCTI_RT_META_PROPN_ATTR]
+
+#define meta_modules	objc_rt_trees[OCTI_RT_META_MODULES]
+#define meta_symtab	objc_rt_trees[OCTI_RT_META_SYMTAB]
+#define meta_info	objc_rt_trees[OCTI_RT_META_INFO]
+
+#define meta_ehtype	objc_rt_trees[OCTI_RT_META_EHTYPE]
+
+#define meta_const_str	objc_rt_trees[OCTI_RT_META_CONST_STR]
+
+#define OBJCMETA(DECL,VERS,KIND)					\
+  if (VERS)								\
+    DECL_ATTRIBUTES (DECL) = build_tree_list ((VERS), (KIND));