JS_EXPORT_PRIVATE JSValue setNeverOptimize(JSValue function);
JS_EXPORT_PRIVATE JSValue optimizeNextInvocation(JSValue function);
+JS_EXPORT_PRIVATE JSValue failNextNewCodeBlock(ExecState*);
JS_EXPORT_PRIVATE JSValue numberOfDFGCompiles(ExecState*);
JS_EXPORT_PRIVATE JSValue setNeverInline(ExecState*);
JS_EXPORT_PRIVATE JSValue setNeverOptimize(ExecState*);