[compiler] Properly guard the speculative optimizations for instanceof.

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 118 matching lines @@
   V(InternalArrayNoArgumentConstructor)       \
   V(InternalArraySingleArgumentConstructor)   \
   V(Dec)                                      \
   V(ElementsTransitionAndStore)               \
   V(FastCloneRegExp)                          \
   V(FastCloneShallowArray)                    \
   V(FastCloneShallowObject)                   \
   V(FastNewClosure)                           \
   V(FastNewFunctionContext)                   \
   V(InstanceOf)                               \
+  V(InstanceOfWithFeedback)                   \
   V(LessThan)                                 \
   V(LessThanOrEqual)                          \
   V(GreaterThan)                              \
   V(GreaterThanOrEqual)                       \
   V(Equal)                                    \
   V(NotEqual)                                 \
   V(KeyedLoadSloppyArguments)                 \
   V(KeyedStoreSloppyArguments)                \
   V(LoadScriptContextField)                   \
   V(StoreScriptContextField)                  \
@@ skipping 767 matching lines @@
 
 class InstanceOfStub final : public TurboFanCodeStub {
  public:
   explicit InstanceOfStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
  private:
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Compare);
   DEFINE_TURBOFAN_BINARY_OP_CODE_STUB(InstanceOf, TurboFanCodeStub);
 };
 
+class InstanceOfWithFeedbackStub final : public TurboFanCodeStub {
+ public:
+  explicit InstanceOfWithFeedbackStub(Isolate* isolate)
+      : TurboFanCodeStub(isolate) {}
+
+ private:
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOpWithVector);
+  DEFINE_TURBOFAN_BINARY_OP_CODE_STUB_WITH_FEEDBACK(InstanceOfWithFeedback,
+                                                    TurboFanCodeStub);
+};
+
 class LessThanStub final : public TurboFanCodeStub {
  public:
   explicit LessThanStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Compare);
   DEFINE_TURBOFAN_BINARY_OP_CODE_STUB(LessThan, TurboFanCodeStub);
 };
 
 class LessThanOrEqualStub final : public TurboFanCodeStub {
  public:
@@ skipping 2218 matching lines @@
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromMachineType(MachineType type);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_