Revert "[turbofan] Merge GenericNode with Node."

test/cctest/compiler/test-graph-reducer.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "graph-tester.h"
+#include "src/compiler/generic-node-inl.h"
 #include "src/compiler/graph-reducer.h"
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
 const uint8_t OPCODE_A0 = 10;
 const uint8_t OPCODE_A1 = 11;
 const uint8_t OPCODE_A2 = 12;
 const uint8_t OPCODE_B0 = 20;
 const uint8_t OPCODE_B1 = 21;
@@ skipping 595 matching lines @@
     for (int i = 0; i < 3; i++) {
       int before = graph.NodeCount();
       reducer.ReduceGraph();
       CHECK_EQ(before, graph.NodeCount());
       CHECK_EQ(&OPC0, n1->op());
       CHECK_EQ(&OPC1, end->op());
       CHECK_EQ(n1, end->InputAt(0));
     }
   }
 }