--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/opto/multnode.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,81 @@
+/*
+ * Copyright 1997-2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class Matcher;
+class ProjNode;
+
+//------------------------------MultiNode--------------------------------------
+// This class defines a MultiNode, a Node which produces many values.  The
+// values are wrapped up in a tuple Type, i.e. a TypeTuple.
+class MultiNode : public Node {
+public:
+  MultiNode( uint required ) : Node(required) {
+    init_class_id(Class_Multi);
+  }
+  virtual int Opcode() const;
+  virtual const Type *bottom_type() const = 0;
+  virtual bool       is_CFG() const { return true; }
+  virtual uint hash() const { return NO_HASH; }  // CFG nodes do not hash
+  virtual bool depends_only_on_test() const { return false; }
+  virtual const RegMask &out_RegMask() const;
+  virtual Node *match( const ProjNode *proj, const Matcher *m );
+  virtual uint ideal_reg() const { return NotAMachineReg; }
+  ProjNode* proj_out(uint which_proj) const; // Get a named projection
+
+};
+
+//------------------------------ProjNode---------------------------------------
+// This class defines a Projection node.  Projections project a single element
+// out of a tuple (or Signature) type.  Only MultiNodes produce TypeTuple
+// results.
+class ProjNode : public Node {
+protected:
+  virtual uint hash() const;
+  virtual uint cmp( const Node &n ) const;
+  virtual uint size_of() const;
+  void check_con() const;       // Called from constructor.
+
+public:
+  ProjNode( Node *src, uint con, bool io_use = false )
+    : Node( src ), _con(con), _is_io_use(io_use)
+  {
+    init_class_id(Class_Proj);
+    debug_only(check_con());
+  }
+  const uint _con;              // The field in the tuple we are projecting
+  const bool _is_io_use;        // Used to distinguish between the projections
+                                // used on the control and io paths from a macro node
+  virtual int Opcode() const;
+  virtual bool      is_CFG() const;
+  virtual bool depends_only_on_test() const { return false; }
+  virtual const Type *bottom_type() const;
+  virtual const TypePtr *adr_type() const;
+  virtual bool pinned() const;
+  virtual const Type *Value( PhaseTransform *phase ) const;
+  virtual uint ideal_reg() const;
+  virtual const RegMask &out_RegMask() const;
+#ifndef PRODUCT
+  virtual void dump_spec(outputStream *st) const;
+#endif
+};