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

src/compiler.cc

 // Copyright 2009 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 631 matching lines @@
   // non-context (stack-allocated) locals.
   if (expr->starts_initialization_block()) BAILOUT("initialization block");
 
   Token::Value op = expr->op();
   if (op == Token::INIT_CONST) BAILOUT("initialize constant");
   if (op != Token::ASSIGN && op != Token::INIT_VAR) {
     BAILOUT("compound assignment");
   }
 
   Variable* var = expr->target()->AsVariableProxy()->AsVariable();
-  if (var == NULL || var->is_global()) BAILOUT("non-variable assignment");
+  if (var == NULL) BAILOUT("non-variable assignment");
 
-  ASSERT(var->slot() != NULL);
-  Slot::Type type = var->slot()->type();
-  if (type != Slot::PARAMETER && type != Slot::LOCAL) {
-    BAILOUT("non-parameter/non-local slot assignment");
+  if (!var->is_global()) {
+    ASSERT(var->slot() != NULL);
+    Slot::Type type = var->slot()->type();
+    if (type != Slot::PARAMETER && type != Slot::LOCAL) {
+      BAILOUT("non-parameter/non-local slot assignment");
+    }
   }
 
   Visit(expr->value());
 }
 
 
 void CodeGenSelector::VisitThrow(Throw* expr) {
   BAILOUT("Throw");
 }
 
@@ skipping 40 matching lines @@
 
 void CodeGenSelector::VisitThisFunction(ThisFunction* expr) {
   BAILOUT("ThisFunction");
 }
 
 #undef BAILOUT
 #undef CHECK_BAILOUT
 
 
 } }  // namespace v8::internal