[es6] Reintroduce the instanceof operator in the backends.

src/crankshaft/hydrogen-instructions.cc

 // 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.
 
 #include "src/crankshaft/hydrogen-instructions.h"
 
 #include "src/base/bits.h"
 #include "src/base/safe_math.h"
 #include "src/crankshaft/hydrogen-infer-representation.h"
 #include "src/double.h"
@@ skipping 780 matching lines @@
     case HValue::kDoubleBits:
     case HValue::kDummyUse:
     case HValue::kEnterInlined:
     case HValue::kEnvironmentMarker:
     case HValue::kForceRepresentation:
     case HValue::kGetCachedArrayIndex:
     case HValue::kGoto:
     case HValue::kHasCachedArrayIndexAndBranch:
     case HValue::kHasInstanceTypeAndBranch:
     case HValue::kInnerAllocatedObject:
-    case HValue::kInstanceOf:
     case HValue::kIsSmiAndBranch:
     case HValue::kIsStringAndBranch:
     case HValue::kIsUndetectableAndBranch:
     case HValue::kLeaveInlined:
     case HValue::kLoadFieldByIndex:
     case HValue::kLoadGlobalGeneric:
     case HValue::kLoadNamedField:
     case HValue::kLoadNamedGeneric:
     case HValue::kLoadRoot:
     case HValue::kMathMinMax:
@@ skipping 833 matching lines @@
 
 std::ostream& HUnknownOSRValue::PrintDataTo(std::ostream& os) const {  // NOLINT
   const char* type = "expression";
   if (environment_->is_local_index(index_)) type = "local";
   if (environment_->is_special_index(index_)) type = "special";
   if (environment_->is_parameter_index(index_)) type = "parameter";
   return os << type << " @ " << index_;
 }
 
 
-std::ostream& HInstanceOf::PrintDataTo(std::ostream& os) const {  // NOLINT
-  return os << NameOf(left()) << " " << NameOf(right()) << " "
-            << NameOf(context());
-}
-
-
 Range* HValue::InferRange(Zone* zone) {
   Range* result;
   if (representation().IsSmi() || type().IsSmi()) {
     result = new(zone) Range(Smi::kMinValue, Smi::kMaxValue);
     result->set_can_be_minus_zero(false);
   } else {
     result = new(zone) Range();
     result->set_can_be_minus_zero(!CheckFlag(kAllUsesTruncatingToInt32));
     // TODO(jkummerow): The range cannot be minus zero when the upper type
     // bound is Integer32.
@@ skipping 2362 matching lines @@
     case HObjectAccess::kExternalMemory:
       os << "[external-memory]";
       break;
   }
 
   return os << "@" << access.offset();
 }
 
 }  // namespace internal
 }  // namespace v8