diff -r 1796911eb140 -r 7743e6943cdf hotspot/src/share/vm/opto/ifnode.cpp
--- a/hotspot/src/share/vm/opto/ifnode.cpp	Wed Jul 29 12:33:48 2015 +0200
+++ b/hotspot/src/share/vm/opto/ifnode.cpp	Wed Mar 18 16:16:30 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1601,11 +1601,41 @@
   return this;
 }
 
+#ifndef PRODUCT
+//-------------------------------related---------------------------------------
+// An IfProjNode's related node set consists of its input (an IfNode) including
+// the IfNode's condition, plus all of its outputs at level 1. In compact mode,
+// the restrictions for IfNode apply (see IfNode::rel).
+void IfProjNode::related(GrowableArray<Node*> *in_rel, GrowableArray<Node*> *out_rel, bool compact) const {
+  Node* ifNode = this->in(0);
+  in_rel->append(ifNode);
+  if (compact) {
+    ifNode->collect_nodes(in_rel, 3, false, true);
+  } else {
+    ifNode->collect_nodes_in_all_data(in_rel, false);
+  }
+  this->collect_nodes(out_rel, -1, false, false);
+}
+
 //------------------------------dump_spec--------------------------------------
-#ifndef PRODUCT
 void IfNode::dump_spec(outputStream *st) const {
   st->print("P=%f, C=%f",_prob,_fcnt);
 }
+
+//-------------------------------related---------------------------------------
+// For an IfNode, the set of related output nodes is just the output nodes till
+// depth 2, i.e, the IfTrue/IfFalse projection nodes plus the nodes they refer.
+// The related input nodes contain no control nodes, but all data nodes
+// pertaining to the condition. In compact mode, the input nodes are collected
+// up to a depth of 3.
+void IfNode::related(GrowableArray <Node *> *in_rel, GrowableArray <Node *> *out_rel, bool compact) const {
+  if (compact) {
+    this->collect_nodes(in_rel, 3, false, true);
+  } else {
+    this->collect_nodes_in_all_data(in_rel, false);
+  }
+  this->collect_nodes(out_rel, -2, false, false);
+}
 #endif
 
 //------------------------------idealize_test----------------------------------