Fix hole handling, and ensure smi representation is handled properly

src/ia32/lithium-ia32.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 2164 matching lines @@
 class LSmiUntag: public LTemplateInstruction<1, 1, 0> {
  public:
   LSmiUntag(LOperand* value, bool needs_check)
       : needs_check_(needs_check) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(SmiUntag, "smi-untag")
-  DECLARE_HYDROGEN_ACCESSOR(Change);
 
   bool needs_check() const { return needs_check_; }
 
  private:
   bool needs_check_;
 };
 
 
 class LStoreNamedField: public LTemplateInstruction<0, 2, 2> {
  public:
@@ skipping 791 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_LITHIUM_IA32_H_