Begin using the virtual frame for assignment statements of the form:...

src/codegen-ia32.h

 // Copyright 2006-2008 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 232 matching lines @@
                      JumpTarget* true_target,
                      JumpTarget* false_target,
                      bool force_cc);
   void Load(Expression* x, TypeofState typeof_state = NOT_INSIDE_TYPEOF);
   void LoadGlobal();
   void LoadGlobalReceiver(Register scratch);
 
   // Read a value from a slot and leave it on top of the expression stack.
   void LoadFromSlot(Slot* slot, TypeofState typeof_state);
 
+  // Store the value on top of the expression stack into a slot, leaving the
+  // value in place.
+  void StoreToSlot(Slot* slot, InitState init_state);
+
   // Special code for typeof expressions: Unfortunately, we must
   // be careful when loading the expression in 'typeof'
   // expressions. We are not allowed to throw reference errors for
   // non-existing properties of the global object, so we must make it
   // look like an explicit property access, instead of an access
   // through the context chain.
   void LoadTypeofExpression(Expression* x);
 
   void ToBoolean(JumpTarget* true_target, JumpTarget* false_target);
 
@@ skipping 147 matching lines @@
   friend class JumpTarget;
   friend class Reference;
 
   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODEGEN_IA32_H_