Change the algorithm and generated code for parallel moves on IA32.

src/lithium.h

 // Copyright 2011 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 17 matching lines @@
 #ifndef V8_LITHIUM_H_
 #define V8_LITHIUM_H_
 
 #include "hydrogen.h"
 #include "lithium-allocator.h"
 #include "safepoint-table.h"
 
 namespace v8 {
 namespace internal {
 
-class LCodeGen;
-class Translation;
-
 class LParallelMove : public ZoneObject {
  public:
   LParallelMove() : move_operands_(4) { }
 
   void AddMove(LOperand* from, LOperand* to) {
     move_operands_.Add(LMoveOperands(from, to));
   }
 
   bool IsRedundant() const;
 
@@ skipping 109 matching lines @@
   LOperand** spilled_double_registers_;
 
   LEnvironment* outer_;
 
   friend class LCodegen;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_H_