--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ipa-ref.h	Mon May 24 12:47:05 2010 +0900
@@ -0,0 +1,91 @@
+/* IPA reference lists.
+   Copyright (C) 2010
+   Free Software Foundation, Inc.
+   Contributed by Jan Hubicka
+
+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/>.  */
+
+struct cgraph_node;
+struct varpool_node;
+
+/* How the reference is done.  */
+enum GTY(()) ipa_ref_use
+{
+  IPA_REF_LOAD,
+  IPA_REF_STORE,
+  IPA_REF_ADDR
+};
+
+/* Type of refering or refered type.  */
+enum GTY(()) ipa_ref_type
+{
+  IPA_REF_CGRAPH,
+  IPA_REF_VARPOOL
+};
+
+/* We can have references spanning both callgraph and varpool,
+   so all pointers needs to be of both types.  */
+union GTY(()) ipa_ref_ptr_u
+{
+  struct cgraph_node * GTY((tag ("IPA_REF_CGRAPH"))) cgraph_node;
+  struct varpool_node * GTY((tag ("IPA_REF_VARPOOL"))) varpool_node;
+};
+
+/* Record of reference in callgraph or varpool.  */
+struct GTY(()) ipa_ref
+{
+  union ipa_ref_ptr_u GTY ((desc ("%1.refering_type"))) refering;
+  union ipa_ref_ptr_u GTY ((desc ("%1.refered_type"))) refered;
+  gimple stmt;
+  unsigned int refered_index;
+  ENUM_BITFIELD (ipa_ref_type) refering_type:1;
+  ENUM_BITFIELD (ipa_ref_type) refered_type:1;
+  ENUM_BITFIELD (ipa_ref_use) use:2;
+};
+
+typedef struct ipa_ref ipa_ref_t;
+typedef struct ipa_ref *ipa_ref_ptr;
+
+DEF_VEC_O(ipa_ref_t);
+DEF_VEC_ALLOC_O(ipa_ref_t,gc);
+DEF_VEC_P(ipa_ref_ptr);
+DEF_VEC_ALLOC_P(ipa_ref_ptr,heap);
+
+/* List of references.  This is stored in both callgraph and varpool nodes.  */
+struct GTY(()) ipa_ref_list
+{
+  /* Store actual references in references vector.  */
+  VEC(ipa_ref_t,gc) *references;
+  /* Refering is vector of pointers to references.  It must not live in GGC space
+     or GGC will try to mark middle of references vectors.  */
+  VEC(ipa_ref_ptr,heap) * GTY((skip)) refering;
+};
+
+struct ipa_ref * ipa_record_reference (struct cgraph_node *,
+				       struct varpool_node *,
+				       struct cgraph_node *,
+				       struct varpool_node *,
+				       enum ipa_ref_use, gimple);
+
+void ipa_remove_reference (struct ipa_ref *);
+void ipa_remove_all_references (struct ipa_ref_list *);
+void ipa_remove_all_refering (struct ipa_ref_list *);
+void ipa_dump_references (FILE *, struct ipa_ref_list *);
+void ipa_dump_refering (FILE *, struct ipa_ref_list *);
+void ipa_clone_references (struct cgraph_node *, struct varpool_node *, struct ipa_ref_list *);
+void ipa_clone_refering (struct cgraph_node *, struct varpool_node *, struct ipa_ref_list *);
+