[turbofan] Some common operators are globally shared singletons.

test/cctest/compiler/graph-builder-tester.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 "test/cctest/compiler/graph-builder-tester.h"
+
+#include "src/compiler/linkage.h"
 #include "src/compiler/pipeline.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 MachineCallHelper::MachineCallHelper(Zone* zone, MachineSignature* machine_sig)
     : CallHelper(zone->isolate(), machine_sig),
       parameters_(NULL),
       graph_(NULL) {}
@@ skipping 29 matching lines @@
 
 Node* MachineCallHelper::Parameter(size_t index) {
   DCHECK_NE(NULL, parameters_);
   DCHECK(index < parameter_count());
   return parameters_[index];
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8