--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/opto/mathexactnode.hpp	Fri Oct 11 10:38:03 2013 +0200
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2013, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_OPTO_MATHEXACTNODE_HPP
+#define SHARE_VM_OPTO_MATHEXACTNODE_HPP
+
+#include "opto/multnode.hpp"
+#include "opto/node.hpp"
+#include "opto/type.hpp"
+
+class Node;
+
+class PhaseGVN;
+class PhaseTransform;
+
+class MathExactNode : public MultiNode {
+public:
+  MathExactNode(Node* ctrl, Node* in1, Node* in2);
+  enum {
+    result_proj_node = 0,
+    flags_proj_node = 1
+  };
+  virtual int Opcode() const;
+  virtual Node* Identity(PhaseTransform* phase) { return this; }
+  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; }
+  virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); }
+  virtual uint hash() const { return Node::hash(); }
+  virtual bool is_CFG() const { return false; }
+  virtual uint ideal_reg() const { return NotAMachineReg; }
+
+  ProjNode* result_node() { return proj_out(result_proj_node); }
+  ProjNode* flags_node() { return proj_out(flags_proj_node); }
+protected:
+  Node* no_overflow(PhaseGVN *phase, Node* new_result);
+};
+
+class AddExactINode : public MathExactNode {
+public:
+  AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {}
+  virtual int Opcode() const;
+  virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; }
+  virtual Node* match(const ProjNode* proj, const Matcher* m);
+  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
+};
+
+class FlagsProjNode : public ProjNode {
+public:
+  FlagsProjNode(Node* src, uint con) : ProjNode(src, con) {
+    init_class_id(Class_FlagsProj);
+  }
+
+  virtual int Opcode() const;
+  virtual bool is_CFG() const { return false; }
+  virtual const Type* bottom_type() const { return TypeInt::CC; }
+  virtual uint ideal_reg() const { return Op_RegFlags; }
+};
+
+
+#endif
+