[turbofan] Add support for advanced reducers.

src/compiler/node-marker.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_NODE_MARKER_H_
 #define V8_COMPILER_NODE_MARKER_H_
 
 #include "src/base/macros.h"
 
 namespace v8 {
@@ skipping 11 matching lines @@
 typedef uint32_t Mark;
 
 
 // Base class for templatized NodeMarkers.
 class NodeMarkerBase {
  public:
   NodeMarkerBase(Graph* graph, uint32_t num_states);
 
   Mark Get(Node* node);
   void Set(Node* node, Mark mark);
+  void Reset(Graph* graph);
 
  private:
   Mark mark_min_;
   Mark mark_max_;
 
   DISALLOW_COPY_AND_ASSIGN(NodeMarkerBase);
 };
 
 
 // A NodeMarker uses monotonically increasing marks to assign local "states"
@@ skipping 11 matching lines @@
   void Set(Node* node, State state) {
     NodeMarkerBase::Set(node, static_cast<Mark>(state));
   }
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_NODE_MARKER_H_