Avoid HeapObject check in HStoreNamedField.

src/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 "v8.h"
 
 #include "double.h"
 #include "factory.h"
 #include "hydrogen-infer-representation.h"
 #include "property-details-inl.h"
@@ skipping 860 matching lines @@
     case HValue::kParameter:
     case HValue::kPhi:
     case HValue::kPushArguments:
     case HValue::kRegExpLiteral:
     case HValue::kReturn:
     case HValue::kRor:
     case HValue::kSar:
     case HValue::kSeqStringGetChar:
     case HValue::kStoreCodeEntry:
     case HValue::kStoreKeyed:
+    case HValue::kStoreNamedField:
     case HValue::kStoreNamedGeneric:
     case HValue::kStringCharCodeAt:
     case HValue::kStringCharFromCode:
     case HValue::kThisFunction:
     case HValue::kTypeofIsAndBranch:
     case HValue::kUnknownOSRValue:
     case HValue::kUseConst:
       return false;
 
     case HValue::kAdd:
@@ skipping 28 matching lines @@
     case HValue::kOsrEntry:
     case HValue::kPower:
     case HValue::kSeqStringSetChar:
     case HValue::kShl:
     case HValue::kShr:
     case HValue::kSimulate:
     case HValue::kStackCheck:
     case HValue::kStoreContextSlot:
     case HValue::kStoreGlobalCell:
     case HValue::kStoreKeyedGeneric:
-    case HValue::kStoreNamedField:
     case HValue::kStringAdd:
     case HValue::kStringCompareAndBranch:
     case HValue::kSub:
     case HValue::kToFastProperties:
     case HValue::kTransitionElementsKind:
     case HValue::kTrapAllocationMemento:
     case HValue::kTypeof:
     case HValue::kUnaryMathOperation:
     case HValue::kWrapReceiver:
       return true;
@@ skipping 3846 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal