[turbofan] Machine operators are globally shared singletons.

src/unique.h

 // 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.
 
 #ifndef V8_HYDROGEN_UNIQUE_H_
 #define V8_HYDROGEN_UNIQUE_H_
 
-#include "src/handles.h"
-#include "src/objects.h"
+#include "src/handles-inl.h"  // TODO(everyone): Fix our inl.h crap
+#include "src/objects-inl.h"  // TODO(everyone): Fix our inl.h crap
 #include "src/string-stream.h"
 #include "src/utils.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 
 template <typename T>
 class UniqueSet;
@@ skipping 318 matching lines @@
       }
       capacity_ = new_capacity;
       array_ = new_array;
     }
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_UNIQUE_H_