[es6] Reintroduce the instanceof operator in the backends.

src/crankshaft/hydrogen-instructions.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_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 #define V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 
 #include <cstring>
 #include <iosfwd>
 
@@ skipping 77 matching lines @@
   V(EnterInlined)                             \
   V(EnvironmentMarker)                        \
   V(ForceRepresentation)                      \
   V(ForInCacheArray)                          \
   V(ForInPrepareMap)                          \
   V(GetCachedArrayIndex)                      \
   V(Goto)                                     \
   V(HasCachedArrayIndexAndBranch)             \
   V(HasInstanceTypeAndBranch)                 \
   V(InnerAllocatedObject)                     \
-  V(InstanceOf)                               \
   V(InvokeFunction)                           \
   V(HasInPrototypeChainAndBranch)             \
   V(IsStringAndBranch)                        \
   V(IsSmiAndBranch)                           \
   V(IsUndetectableAndBranch)                  \
   V(LeaveInlined)                             \
   V(LoadContextSlot)                          \
   V(LoadFieldByIndex)                         \
   V(LoadFunctionPrototype)                    \
   V(LoadGlobalGeneric)                        \
@@ skipping 4155 matching lines @@
 
  private:
   HTypeofIsAndBranch(HValue* value, Handle<String> type_literal)
       : HUnaryControlInstruction(value, NULL, NULL),
         type_literal_(Unique<String>::CreateUninitialized(type_literal)) { }
 
   Unique<String> type_literal_;
 };
 
 
-class HInstanceOf final : public HBinaryOperation {
- public:
-  DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P2(HInstanceOf, HValue*, HValue*);
-
-  Representation RequiredInputRepresentation(int index) override {
-    return Representation::Tagged();
-  }
-
-  std::ostream& PrintDataTo(std::ostream& os) const override;  // NOLINT
-
-  DECLARE_CONCRETE_INSTRUCTION(InstanceOf)
-
- private:
-  HInstanceOf(HValue* context, HValue* left, HValue* right)
-      : HBinaryOperation(context, left, right, HType::Boolean()) {
-    set_representation(Representation::Tagged());
-    SetAllSideEffects();
-  }
-};
-
-
 class HHasInPrototypeChainAndBranch final
     : public HTemplateControlInstruction<2, 2> {
  public:
   DECLARE_INSTRUCTION_FACTORY_P2(HHasInPrototypeChainAndBranch, HValue*,
                                  HValue*);
 
   HValue* object() const { return OperandAt(0); }
   HValue* prototype() const { return OperandAt(1); }
 
   Representation RequiredInputRepresentation(int index) override {
@@ skipping 2921 matching lines @@
   bool IsDeletable() const override { return true; }
 };
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_