Merged r14751, r14753 into trunk branch.

src/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5575 matching lines @@
     SetFlag(kTrackSideEffectDominators);
     if (FLAG_track_double_fields && field_representation.IsDouble()) {
       SetGVNFlag(kChangesDoubleFields);
     } else if (is_in_object_) {
       SetGVNFlag(kChangesInobjectFields);
       SetGVNFlag(kDependsOnNewSpacePromotion);
     } else {
       SetGVNFlag(kChangesBackingStoreFields);
       SetGVNFlag(kDependsOnNewSpacePromotion);
     }
+    SetFlag(kDeoptimizeOnUndefined);
   }
 
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedField)
 
   virtual Representation RequiredInputRepresentation(int index) {
     if (FLAG_track_double_fields &&
         index == 1 && field_representation_.IsDouble()) {
       return field_representation_;
     } else if (FLAG_track_fields &&
                index == 1 && field_representation_.IsSmi()) {
@@ skipping 855 matching lines @@
   virtual bool IsDeletable() const { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_