[turbofan] Run inlining within the regular reducer fixpoint.

src/compiler/graph-reducer.h

 // Copyright 2014 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_GRAPH_REDUCER_H_
 #define V8_COMPILER_GRAPH_REDUCER_H_
 
 #include "src/compiler/node-marker.h"
 #include "src/zone-containers.h"
 
@@ skipping 29 matching lines @@
 // language-specific reductions (e.g. reduction based on types or constant
 // folding of low-level operators) can be integrated into the graph reduction
 // phase.
 class Reducer {
  public:
   virtual ~Reducer() {}
 
   // Try to reduce a node if possible.
   virtual Reduction Reduce(Node* node) = 0;
 
+  // Invoked by the {GraphReducer} when all nodes are done.  Can be used to
+  // do additional reductions at the end, which in turn can cause a new round
+  // of reductions.
+  virtual void Finalize();
+
   // Helper functions for subclasses to produce reductions for a node.
   static Reduction NoChange() { return Reduction(); }
   static Reduction Replace(Node* node) { return Reduction(node); }
   static Reduction Changed(Node* node) { return Reduction(node); }
 };
 
 
 // An advanced reducer can also edit the graphs by changing and replacing nodes
 // other than the one currently being reduced.
 class AdvancedReducer : public Reducer {
@@ skipping 110 matching lines @@
   ZoneStack<NodeState> stack_;
 
   DISALLOW_COPY_AND_ASSIGN(GraphReducer);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_GRAPH_REDUCER_H_