Fix lost store side effects with escape analysis.

src/hydrogen-escape-analysis.cc

 // Copyright 2013 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 154 matching lines @@
             PrintF("Replacing load #%d with #%d (%s)\n", instr->id(),
                    replacement->id(), replacement->Mnemonic());
           }
           break;
         }
         case HValue::kStoreNamedField: {
           HStoreNamedField* store = HStoreNamedField::cast(instr);
           int index = store->access().offset() / kPointerSize;
           if (store->object() != allocate) continue;
           ASSERT(store->access().IsInobject());
-          state = NewStateCopy(store, state);
+          state = NewStateCopy(store->previous(), state);
           state->SetOperandAt(index, store->value());
           if (store->has_transition()) {
             state->SetOperandAt(0, store->transition());
           }
+          if (store->HasObservableSideEffects()) {
+            state->ReuseSideEffectsFromStore(store);
+          }
           store->DeleteAndReplaceWith(NULL);
           if (FLAG_trace_escape_analysis) {
             PrintF("Replacing store #%d%s\n", instr->id(),
                    store->has_transition() ? " (with transition)" : "");
           }
           break;
         }
         case HValue::kArgumentsObject:
         case HValue::kCapturedObject:
         case HValue::kSimulate: {
@@ skipping 83 matching lines @@
     AnalyzeDataFlow(allocate);
 
     cumulative_values_ += number_of_values_;
     ASSERT(allocate->HasNoUses());
     ASSERT(!allocate->IsLinked());
   }
 }
 
 
 } }  // namespace v8::internal