cgraphbuild.c (record_reference_ctx): Add varpool_node.

	* cgraphbuild.c (record_reference_ctx): Add varpool_node.
	(record_reference, mark_address, mark_load, mark_store): Record
	references.
	(record_references_in_initializer): Update call of record_references.
	(rebuild_cgraph_edges): Remove all references before rebuiding.
	* cgraph.c (cgraph_create_node): Clear ref list.
	(cgraph_remove_node): Remove references.
	(dump_cgraph_node): Dump references.
	(cgraph_clone_node): Clone references.
	* cgraph.h: Include ipa-ref.h and ipa-ref-inline.h
	(struct cgraph_node, varpool_node): Add ref_lst.
	* ipa-ref.c: New file.
	* ipa-ref.h: New file.
	* ipa-ref-inline.h: New file.
	* lto-cgraph.c (output_varpool): Take cgrag node set argument.
	(referenced_from_other_partition_p): New function.
	(lto_output_varpool_node): Take set arugment; call
	referenced_from_other_partition.
	(lto_output_ref): New.
	(add_references): New.
	(output_refs): New.
	(output_cgraph): Compute boundary based on references;
	output refs.
	(output_varpool): Accept cgraph_node_set argument.
	(input_ref): New.
	(input_refs): New.
	(input_cgraph): Call input_refs.
	* lto-section-in.c (lto_section_name): Add refs.
	* Makefile.in: (cgraph.h): Include ipa-ref.h and ipa-ref-inline.h
	(ipa-ref.o): New file.
	* varpool.c (varpool_node): Clear ipa ref list.
	(varpool_remove_node): Remove references.
	(dump_varpool_node): Dump references.
	(varpool_assemble_decl): Only compile finalized ones.
	(varpool_extra_name_alias): Initialize ref list.
	* lto-streamer.c (lto-get_section_name): Add .refs section.
	* lto-streamer.h (lto_section_type): Add LTO_section_refs.
	(referenced_from_other_partition_p): Declared.

From-SVN: r159097

1 files changed, 119 insertions, 0 deletions

diff --git a/gcc/ipa-ref-inline.h b/gcc/ipa-ref-inline.h
index e69de29..6ca9ba0 100644
--- a/gcc/ipa-ref-inline.h
+++ b/gcc/ipa-ref-inline.h
@@ -0,0 +1,119 @@
+/* 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/>.  */
+
+/* Return callgraph node REF is refering.  */
+static inline struct cgraph_node *
+ipa_ref_node (struct ipa_ref *ref)
+{
+  gcc_assert (ref->refered_type == IPA_REF_CGRAPH);
+  return ref->refered.cgraph_node;
+}
+
+/* Return varpool node REF is refering.  */
+
+static inline struct varpool_node *
+ipa_ref_varpool_node (struct ipa_ref *ref)
+{
+  gcc_assert (ref->refered_type == IPA_REF_VARPOOL);
+  return ref->refered.varpool_node;
+}
+
+/* Return cgraph node REF is in.  */
+
+static inline struct cgraph_node *
+ipa_ref_refering_node (struct ipa_ref *ref)
+{
+  gcc_assert (ref->refering_type == IPA_REF_CGRAPH);
+  return ref->refering.cgraph_node;
+}
+
+/* Return varpool node REF is in.  */
+
+static inline struct varpool_node *
+ipa_ref_refering_varpool_node (struct ipa_ref *ref)
+{
+  gcc_assert (ref->refering_type == IPA_REF_VARPOOL);
+  return ref->refering.varpool_node;
+}
+
+/* Return reference list REF is in.  */
+
+static inline struct ipa_ref_list *
+ipa_ref_refering_ref_list (struct ipa_ref *ref)
+{
+  if (ref->refering_type == IPA_REF_CGRAPH)
+    return &ipa_ref_refering_node (ref)->ref_list;
+  else
+    return &ipa_ref_refering_varpool_node (ref)->ref_list;
+}
+
+/* Return reference list REF is in.  */
+
+static inline struct ipa_ref_list *
+ipa_ref_refered_ref_list (struct ipa_ref *ref)
+{
+  if (ref->refered_type == IPA_REF_CGRAPH)
+    return &ipa_ref_node (ref)->ref_list;
+  else
+    return &ipa_ref_varpool_node (ref)->ref_list;
+}
+
+/* Return first reference in LIST or NULL if empty.  */
+
+static inline struct ipa_ref *
+ipa_ref_list_first_reference (struct ipa_ref_list *list)
+{
+  if (!VEC_length (ipa_ref_t, list->references))
+    return NULL;
+  return VEC_index (ipa_ref_t, list->references, 0);
+}
+
+/* Return first refering ref in LIST or NULL if empty.  */
+
+static inline struct ipa_ref *
+ipa_ref_list_first_refering (struct ipa_ref_list *list)
+{
+  if (!VEC_length (ipa_ref_ptr, list->refering))
+    return NULL;
+  return VEC_index (ipa_ref_ptr, list->refering, 0);
+}
+
+/* Clear reference list.  */
+
+static inline void
+ipa_empty_ref_list (struct ipa_ref_list *list)
+{
+  list->refering = NULL;
+  list->references = NULL;
+}
+
+/* Clear reference list.  */
+
+static inline unsigned int
+ipa_ref_list_nreferences (struct ipa_ref_list *list)
+{
+  return VEC_length (ipa_ref_t, list->references);
+}
+
+#define ipa_ref_list_reference_iterate(L,I,P) \
+   VEC_iterate(ipa_ref_t, (L)->references, (I), (P))
+#define ipa_ref_list_refering_iterate(L,I,P) \
+   VEC_iterate(ipa_ref_ptr, (L)->refering, (I), (P))