I am not who you responded to, but: the registers are always in the same physical location, but internally, they are virtually renamed for efficient reuse and t

I am not who you responded to, but: the registers are always in the same physical location, but internally, they are virtually renamed for efficient reuse and to avoid resource contention. If the CPU knows the stream of assembly instructions to be executed, it can abstract away actual register names and show a larger number of registers than what's physically available.