* 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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159097 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 0 deletions

diff --git a/gcc/varpool.c b/gcc/varpool.c
index 76d8f724bcb..a540d035a7e 100644
--- a/gcc/varpool.c
+++ b/gcc/varpool.c
@@ -141,6 +141,7 @@ varpool_node (tree decl)
   node->decl = decl;
   node->order = cgraph_order++;
   node->next = varpool_nodes;
+  ipa_empty_ref_list (&node->ref_list);
   if (varpool_nodes)
     varpool_nodes->prev = node;
   varpool_nodes = node;
@@ -193,6 +194,8 @@ varpool_remove_node (struct varpool_node *node)
       gcc_assert (varpool_nodes_queue == node);
       varpool_nodes_queue = node->next_needed;
     }
+  ipa_remove_all_references (&node->ref_list);
+  ipa_remove_all_refering (&node->ref_list);
   if (DECL_INITIAL (node->decl))
     DECL_INITIAL (node->decl) = error_mark_node;
   ggc_free (node);
@@ -228,6 +231,10 @@ dump_varpool_node (FILE *f, struct varpool_node *node)
   else if (node->used_from_other_partition)
     fprintf (f, " used_from_other_partition");
   fprintf (f, "\n");
+  fprintf (f, "  References: ");
+  ipa_dump_references (f, &node->ref_list);
+  fprintf (f, "  Refering this var: ");
+  ipa_dump_refering (f, &node->ref_list);
 }
 
 /* Dump the variable pool.  */
@@ -633,6 +640,7 @@ varpool_extra_name_alias (tree alias, tree decl)
   alias_node->alias = 1;
   alias_node->extra_name = decl_node;
   alias_node->next = decl_node->extra_name;
+  ipa_empty_ref_list (&alias_node->ref_list);
   if (decl_node->extra_name)
     decl_node->extra_name->prev = alias_node;
   decl_node->extra_name = alias_node;