Added fast compiler support for calling JS runtime functions....

src/ast.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 1062 matching lines @@
   CallRuntime(Handle<String> name,
               Runtime::Function* function,
               ZoneList<Expression*>* arguments)
       : name_(name), function_(function), arguments_(arguments) { }
 
   virtual void Accept(AstVisitor* v);
 
   Handle<String> name() const { return name_; }
   Runtime::Function* function() const { return function_; }
   ZoneList<Expression*>* arguments() const { return arguments_; }
+  bool is_jsruntime() const { return function_ == NULL; }
 
  private:
   Handle<String> name_;
   Runtime::Function* function_;
   ZoneList<Expression*>* arguments_;
 };
 
 
 class UnaryOperation: public Expression {
  public:
@@ skipping 687 matching lines @@
 #undef DEF_VISIT
 
  private:
   bool stack_overflow_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_