--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/opto/multnode.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 1997, 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
+ * 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_MULTNODE_HPP
+#define SHARE_VM_OPTO_MULTNODE_HPP
+
+#include "opto/node.hpp"
+
+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.
+  const Type* proj_type(const Type* t) const;
+
+public:
+  ProjNode( Node *src, uint con, bool io_use = false )
+    : Node( src ), _con(con), _is_io_use(io_use)
+  {
+    init_class_id(Class_Proj);
+    // Optimistic setting. Need additional checks in Node::is_dead_loop_safe().
+    if (con != TypeFunc::Memory || src->is_Start())
+      init_flags(Flag_is_dead_loop_safe);
+    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(PhaseGVN* phase) const;
+  virtual uint ideal_reg() const;
+  virtual const RegMask &out_RegMask() const;
+
+#ifndef PRODUCT
+  virtual void dump_spec(outputStream *st) const;
+  virtual void dump_compact_spec(outputStream *st) const;
+#endif
+
+  // Return uncommon trap call node if proj is for "proj->[region->..]call_uct"
+  // NULL otherwise
+  CallStaticJavaNode* is_uncommon_trap_proj(Deoptimization::DeoptReason reason);
+  // Return uncommon trap call node for    "if(test)-> proj -> ...
+  //                                                 |
+  //                                                 V
+  //                                             other_proj->[region->..]call_uct"
+  // NULL otherwise
+  CallStaticJavaNode* is_uncommon_trap_if_pattern(Deoptimization::DeoptReason reason);
+
+  // Return other proj node when this is a If proj node
+  ProjNode* other_if_proj() const;
+};
+
+#endif // SHARE_VM_OPTO_MULTNODE_HPP