Reland "Hydrogenisation of binops"

src/ia32/lithium-codegen-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 103 matching lines @@
       X87Register left, X87Register right, X87Register result);
 
   void X87LoadForUsage(X87Register reg);
   void X87LoadForUsage(X87Register reg1, X87Register reg2);
   void X87PrepareToWrite(X87Register reg) { x87_stack_.PrepareToWrite(reg); }
   void X87CommitWrite(X87Register reg) { x87_stack_.CommitWrite(reg); }
 
   void X87Fxch(X87Register reg, int other_slot = 0) {
     x87_stack_.Fxch(reg, other_slot);
   }
+  void X87Free(X87Register reg) {
+    x87_stack_.Free(reg);
+  }
+
 
   bool X87StackEmpty() {
     return x87_stack_.depth() == 0;
   }
 
   Handle<Object> ToHandle(LConstantOperand* op) const;
 
   // The operand denoting the second word (the one with a higher address) of
   // a double stack slot.
   Operand HighOperand(LOperand* op);
@@ skipping 394 matching lines @@
   Label exit_;
   Label* external_exit_;
   Label done_;
   int instruction_index_;
   LCodeGen::X87Stack x87_stack_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_LITHIUM_CODEGEN_IA32_H_