Change deoptimization description for materialized objects.

runtime/vm/intermediate_language.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 4055 matching lines @@
                          ZoneGrowableArray<Value*>* values)
       : cls_(cls), fields_(fields), values_(values), locations_(NULL) {
     ASSERT(fields_.length() == values_->length());
     for (intptr_t i = 0; i < InputCount(); i++) {
       InputAt(i)->set_instruction(this);
       InputAt(i)->set_use_index(i);
     }
   }
 
   const Class& cls() const { return cls_; }
-  const Field& FieldAt(intptr_t i) const {
-    return *fields_[i];
+  intptr_t FieldOffsetAt(intptr_t i) const {
+    return fields_[i]->Offset();
   }
   const Location& LocationAt(intptr_t i) {
     return locations_[i];
   }
 
   DECLARE_INSTRUCTION(MaterializeObject)
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
   virtual intptr_t InputCount() const {
     return values_->length();
@@ skipping 3095 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_