[turbofan] Stub for typeof operator.

src/code-stubs.h

 // Copyright 2012 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_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/code-stub-assembler.h"
@@ skipping 1039 matching lines @@
 
 
 class NumberToStringStub final : public HydrogenCodeStub {
  public:
   explicit NumberToStringStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(TypeConversion);
   DEFINE_HYDROGEN_CODE_STUB(NumberToString, HydrogenCodeStub);
 };
 
-
-class TypeofStub final : public HydrogenCodeStub {
+class TypeofStub final : public TurboFanCodeStub {
  public:
-  explicit TypeofStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
-
-  static void GenerateAheadOfTime(Isolate* isolate);
+  explicit TypeofStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Typeof);
-  DEFINE_HYDROGEN_CODE_STUB(Typeof, HydrogenCodeStub);
+  DEFINE_TURBOFAN_UNARY_OP_CODE_STUB(Typeof, TurboFanCodeStub);
 };
 
 class FastNewClosureStub : public TurboFanCodeStub {
  public:
   explicit FastNewClosureStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   static compiler::Node* Generate(CodeStubAssembler* assembler,
                                   compiler::Node* shared_info,
                                   compiler::Node* context);
 
@@ skipping 2069 matching lines @@
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromType(Type* type);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_