cgraph.h (cgraph_node): Add predicate prevailing_p.

	* cgraph.h (cgraph_node): Add predicate prevailing_p.
	(cgraph_edge): Add predicate possible_call_in_translation_unit_p.
	* ipa-prop.c (ipa_write_jump_function): Optimize streaming of ADDR_EXPR.
	(ipa_read_jump_function): Add prevails parameter; optimize streaming.
	(ipa_read_edge_info): Break out from ...
	(ipa_read_node_info): ... here; optimize streaming.
	* cgraph.c (cgraph_edge::possibly_call_in_translation_unit_p): New
	predicate.

From-SVN: r267175

1 files changed, 17 insertions, 0 deletions

diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index b8e23cc..51cea06 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -308,6 +308,10 @@ public:
   /* Return availability of NODE when referenced from REF.  */
   enum availability get_availability (symtab_node *ref = NULL);
 
+  /* During LTO stream-in this predicate can be used to check whether node
+     in question prevails in the linking to save some memory usage.  */
+  bool prevailing_p (void);
+
   /* Return true if NODE binds to current definition in final executable
      when referenced from REF.  If REF is NULL return conservative value
      for any reference.  */
@@ -1730,6 +1734,10 @@ struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"),
      after passes that don't update the cgraph.  */
   static void rebuild_references (void);
 
+  /* During LTO stream in this can be used to check whether call can possibly
+     be internal to the current translation unit.  */
+  bool possibly_call_in_translation_unit_p (void);
+
   /* Expected number of executions: calculated in profile.c.  */
   profile_count count;
   cgraph_node *caller;
@@ -3357,6 +3365,15 @@ xstrdup_for_dump (const char *transient_str)
   return ggc_strdup (transient_str);
 }
 
+/* During LTO stream-in this predicate can be used to check whether node
+   in question prevails in the linking to save some memory usage.  */
+inline bool
+symtab_node::prevailing_p (void)
+{
+  return definition && ((!TREE_PUBLIC (decl) && !DECL_EXTERNAL (decl))
+			 || previous_sharing_asm_name == NULL);
+}
+
 extern GTY(()) symbol_table *saved_symtab;
 
 #if CHECKING_P