Added support for assignments to global variables in the toplevel code...

src/ia32/codegen-ia32.h

Index: src/ia32/codegen-ia32.h
===================================================================
--- src/ia32/codegen-ia32.h	(revision 3091)
+++ src/ia32/codegen-ia32.h	(working copy)
@@ -396,7 +396,7 @@
   void LoadReference(Reference* ref);
   void UnloadReference(Reference* ref);
 
-  Operand ContextOperand(Register context, int index) const {
+  static Operand ContextOperand(Register context, int index) {
     return Operand(context, Context::SlotOffset(index));
   }
 
@@ -407,7 +407,7 @@
                                             JumpTarget* slow);
 
   // Expressions
-  Operand GlobalObject() const {
+  static Operand GlobalObject() {
     return ContextOperand(esi, Context::GLOBAL_INDEX);
   }
 
@@ -616,6 +616,7 @@
   friend class JumpTarget;
   friend class Reference;
   friend class Result;
+  friend class FastCodeGenerator;
 
   friend class CodeGeneratorPatcher;  // Used in test-log-stack-tracer.cc