Fix an issue discovered in regress-969.

src/hydrogen.cc

 // Copyright 2010 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 3239 matching lines @@
       } else {
         HInstruction* instr = new HStoreNamedGeneric(object, name, value);
         Push(value);
         instr->set_position(expr->position());
         AddInstruction(instr);
       }
       subgraphs.Add(subgraph);
     }
 
     HBasicBlock* new_exit_block =
-        BuildTypeSwitch(&maps, &subgraphs, object, expr->id());
+        BuildTypeSwitch(&maps, &subgraphs, object, expr->AssignmentId());
     subgraph()->set_exit_block(new_exit_block);
   }
 
   if (subgraph()->HasExit()) ast_context()->ReturnValue(Pop());
 }
 
 
 void HGraphBuilder::HandlePropertyAssignment(Assignment* expr) {
   Property* prop = expr->target()->AsProperty();
   ASSERT(prop != NULL);
@@ skipping 2395 matching lines @@
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify();
   if (chunk_ != NULL) chunk_->Verify();
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal