Revert "[turbofan] Merge GenericNode with Node."

src/compiler/phi-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_PHI_REDUCER_H_
 #define V8_COMPILER_PHI_REDUCER_H_
 
+#include "src/compiler/generic-node-inl.h"
 #include "src/compiler/graph-reducer.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Replaces redundant phis if all the inputs are the same or the phi itself.
 class PhiReducer FINAL : public Reducer {
  public:
   virtual Reduction Reduce(Node* node) OVERRIDE {
@@ skipping 15 matching lines @@
     }
     DCHECK_NE(node, replacement);
     return Replace(replacement);
   }
 };
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_PHI_REDUCER_H_