Gabriele Svelto on Nostr: Modern CPUs contain a tremendous amount of state that they need to track. Hundreds of ...

Modern CPUs contain a tremendous amount of state that they need to track. Hundreds of instructions can be in-flight at any given moment, each of them operates on physical registers which are assigned just-in-time via a mechanism that maps the registers in the ISA to spare physical slots in very large banks. Each instruction is associated with a set of data that is entirely speculative for a very long time, including the instruction itself. 5/31