[es6] Reintroduce the instanceof operator in the backends.

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 13 matching lines @@
   V(ArrayConstructor)                       \
   V(BinaryOpICWithAllocationSite)           \
   V(CallApiCallback)                        \
   V(CallApiGetter)                          \
   V(CallConstruct)                          \
   V(CallIC)                                 \
   V(CEntry)                                 \
   V(CompareIC)                              \
   V(DoubleToI)                              \
   V(FunctionPrototype)                      \
-  V(InstanceOf)                             \
   V(InternalArrayConstructor)               \
   V(JSEntry)                                \
   V(KeyedLoadICTrampoline)                  \
   V(LoadICTrampoline)                       \
   V(CallICTrampoline)                       \
   V(LoadIndexedString)                      \
   V(MathPow)                                \
   V(ProfileEntryHook)                       \
   V(RecordWrite)                            \
   V(RegExpExec)                             \
@@ skipping 69 matching lines @@
   V(ShiftRight)                             \
   V(ShiftRightLogical)                      \
   V(ShiftLeft)                              \
   V(BitwiseAnd)                             \
   V(BitwiseOr)                              \
   V(BitwiseXor)                             \
   V(Inc)                                    \
   V(InternalArrayNoArgumentConstructor)     \
   V(Dec)                                    \
   V(FastCloneShallowObject)                 \
+  V(InstanceOf)                             \
   V(LessThan)                               \
   V(LessThanOrEqual)                        \
   V(GreaterThan)                            \
   V(GreaterThanOrEqual)                     \
   V(Equal)                                  \
   V(NotEqual)                               \
   V(StrictEqual)                            \
   V(StrictNotEqual)                         \
   V(StringEqual)                            \
   V(StringNotEqual)                         \
@@ skipping 640 matching lines @@
 };
 
 class DecStub final : public TurboFanCodeStub {
  public:
   explicit DecStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(CountOp);
   DEFINE_TURBOFAN_CODE_STUB(Dec, TurboFanCodeStub);
 };
 
+class InstanceOfStub final : public TurboFanCodeStub {
+ public:
+  explicit InstanceOfStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+
+ private:
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(Compare);
+  DEFINE_TURBOFAN_CODE_STUB(InstanceOf, TurboFanCodeStub);
+};
+
 class LessThanStub final : public TurboFanCodeStub {
  public:
   explicit LessThanStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Compare);
   DEFINE_TURBOFAN_CODE_STUB(LessThan, TurboFanCodeStub);
 };
 
 class LessThanOrEqualStub final : public TurboFanCodeStub {
  public:
@@ skipping 437 matching lines @@
 
 class FastArrayPushStub : public HydrogenCodeStub {
  public:
   explicit FastArrayPushStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
 
  private:
   DEFINE_CALL_INTERFACE_DESCRIPTOR(FastArrayPush);
   DEFINE_HYDROGEN_CODE_STUB(FastArrayPush, HydrogenCodeStub);
 };
 
-class InstanceOfStub final : public PlatformCodeStub {
- public:
-  explicit InstanceOfStub(Isolate* isolate, bool es6_instanceof = false)
-      : PlatformCodeStub(isolate) {
-    minor_key_ = IsES6InstanceOfBits::encode(es6_instanceof);
-  }
-
-  bool is_es6_instanceof() const {
-    return IsES6InstanceOfBits::decode(minor_key_);
-  }
-
- private:
-  class IsES6InstanceOfBits : public BitField<bool, 0, 1> {};
-
-  DEFINE_CALL_INTERFACE_DESCRIPTOR(InstanceOf);
-  DEFINE_PLATFORM_CODE_STUB(InstanceOf, PlatformCodeStub);
-};
-
 
 enum AllocationSiteOverrideMode {
   DONT_OVERRIDE,
   DISABLE_ALLOCATION_SITES,
   LAST_ALLOCATION_SITE_OVERRIDE_MODE = DISABLE_ALLOCATION_SITES
 };
 
 
 class ArrayConstructorStub: public PlatformCodeStub {
  public:
@@ skipping 1977 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_