Defer creating Handles for HConstants to the code generation phase.

src/lithium.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 621 matching lines @@
   LChunkBase(CompilationInfo* info, HGraph* graph)
     : spill_slot_count_(0),
       info_(info),
       graph_(graph),
       instructions_(32, graph->zone()),
       pointer_maps_(8, graph->zone()),
       inlined_closures_(1, graph->zone()) { }
 
   void AddInstruction(LInstruction* instruction, HBasicBlock* block);
   LConstantOperand* DefineConstantOperand(HConstant* constant);
-  Handle<Object> LookupLiteral(LConstantOperand* operand) const;
+  HConstant* LookupConstant(LConstantOperand* operand) const;
   Representation LookupLiteralRepresentation(LConstantOperand* operand) const;
 
   int ParameterAt(int index);
   int GetParameterStackSlot(int index) const;
   int spill_slot_count() const { return spill_slot_count_; }
   CompilationInfo* info() const { return info_; }
   HGraph* graph() const { return graph_; }
   const ZoneList<LInstruction*>* instructions() const { return &instructions_; }
   void AddGapMove(int index, LOperand* from, LOperand* to);
   LGap* GetGapAt(int index) const;
@@ skipping 26 matching lines @@
   ZoneList<Handle<JSFunction> > inlined_closures_;
 };
 
 
 int ElementsKindToShiftSize(ElementsKind elements_kind);
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_H_