Revert "[turbofan] Merge GenericNode with Node."

test/cctest/compiler/test-node-algorithm.cc

 // Copyright 2013 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 <vector>
 
 #include "src/v8.h"
 
 #include "graph-tester.h"
 #include "src/compiler/common-operator.h"
+#include "src/compiler/generic-node.h"
+#include "src/compiler/generic-node-inl.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/operator.h"
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
 static SimpleOperator dummy_operator(IrOpcode::kParameter, Operator::kNoWrite,
                                      0, 0, "dummy");
@@ skipping 298 matching lines @@
   Node* n9 = graph.NewNode(&dummy_operator, n5);
   Node* n10 = graph.NewNode(&dummy_operator, n9);
   Node* n11 = graph.NewNode(&dummy_operator, n9);
   Node* end_dependencies[6] = {n4, n8, n10, n11, n6, n7};
   Node* n12 = graph.NewNode(&dummy_operator, 6, end_dependencies);
   graph.SetEnd(n12);
 
   OFStream os(stdout);
   os << AsDOT(graph);
 }