Improve stores to global variables.

src/ia32/codegen-ia32.h

 // Copyright 2010 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 420 matching lines @@
   void StoreToSlot(Slot* slot, InitState init_state);
 
   // Support for compiling assignment expressions.
   void EmitSlotAssignment(Assignment* node);
   void EmitNamedPropertyAssignment(Assignment* node);
   void EmitKeyedPropertyAssignment(Assignment* node);
 
   // Receiver is passed on the frame and consumed.
   Result EmitNamedLoad(Handle<String> name, bool is_contextual);
 
-  // Reciever and value are passed on the frame and consumed.
-  Result EmitNamedStore(Handle<String> name);
+  // If the store is contextual, value is passed on the frame and consumed.
+  // Otherwise, receiver and value are passed on the frame and consumed.
+  Result EmitNamedStore(Handle<String> name, bool is_contextual);
 
   // Receiver and key are passed on the frame and consumed.
   Result EmitKeyedLoad();
 
   // Receiver, key, and value are passed on the frame and consumed.
   Result EmitKeyedStore(StaticType* key_type);
 
   // 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
@@ skipping 443 matching lines @@
   void Print() {
     PrintF("NumberToStringStub\n");
   }
 #endif
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_CODEGEN_IA32_H_