[zAy0LfpBZLC8mAC]

Register renaming doesn't work like that. How could register contents of a process changing randomly even be usable for anything? Register renaming is about dynamically mapping a small number of ISA register names to a larger number of hardware registers to increase parallelism, but the whole reason for the exercise is that those additional registers don't have ISA names, so you obviously can't read them explicitly, at least not as part of the normal instruction set, who knows what backdoors some CPUs might have ...