PR jit/63854: Fix leak of ipa hooks

gcc/ChangeLog:
	PR jit/63854
	* ipa-prop.c (ipa_register_cgraph_hooks): Guard insertion of
	ipa_add_new_function on function_insertion_hook_holder being
	non-NULL.
	* ipa-reference.c (ipa_reference_c_finalize): Remove
	node_removal_hook_holder and node_duplication_hook_holder if
	they've been added to symtab.
	* toplev.c (toplev::finalize): Call ipa_reference_c_finalize
	before cgraph_c_finalize so that the former can access "symtab".

From-SVN: r218403

gcc/ChangeLog

 2014-12-04  David Malcolm  <dmalcolm@redhat.com>
 
+	PR jit/63854
+	* ipa-prop.c (ipa_register_cgraph_hooks): Guard insertion of
+	ipa_add_new_function on function_insertion_hook_holder being
+	non-NULL.
+	* ipa-reference.c (ipa_reference_c_finalize): Remove
+	node_removal_hook_holder and node_duplication_hook_holder if
+	they've been added to symtab.
+	* toplev.c (toplev::finalize): Call ipa_reference_c_finalize
+	before cgraph_c_finalize so that the former can access "symtab".
+
+2014-12-04  David Malcolm  <dmalcolm@redhat.com>
+
 	* doc/cfg.texi (GIMPLE statement iterators): Add note about
 	gphi_iterator, and use one in the example.
 	* doc/gimple.texi (Tuple specific accessors): Add missing

gcc/ipa-prop.c

@@ -3613,7 +3613,8 @@ ipa_register_cgraph_hooks (void)
   if (!node_duplication_hook_holder)
     node_duplication_hook_holder =
       symtab->add_cgraph_duplication_hook (&ipa_node_duplication_hook, NULL);
-  function_insertion_hook_holder =
+  if (!function_insertion_hook_holder)
+    function_insertion_hook_holder =
       symtab->add_cgraph_insertion_hook (&ipa_add_new_function, NULL);
 }
 

gcc/ipa-reference.c

@@ -1198,4 +1198,15 @@ ipa_reference_c_finalize (void)
       bitmap_obstack_release (&optimization_summary_obstack);
       ipa_init_p = false;
     }
+
+  if (node_removal_hook_holder)
+    {
+      symtab->remove_cgraph_removal_hook (node_removal_hook_holder);
+      node_removal_hook_holder = NULL;
+    }
+  if (node_duplication_hook_holder)
+    {
+      symtab->remove_cgraph_duplication_hook (node_duplication_hook_holder);
+      node_duplication_hook_holder = NULL;
+    }
 }

gcc/toplev.c

@@ -2163,12 +2163,14 @@ toplev::finalize (void)
   rtl_initialized = false;
   this_target_rtl->target_specific_initialized = false;
 
+  /* Needs to be called before cgraph_c_finalize since it uses symtab.  */
+  ipa_reference_c_finalize ();
+
   cgraph_c_finalize ();
   cgraphunit_c_finalize ();
   dwarf2out_c_finalize ();
   gcse_c_finalize ();
   ipa_cp_c_finalize ();
-  ipa_reference_c_finalize ();
   ira_costs_c_finalize ();
   params_c_finalize ();