资料来源 : Free On-Line Dictionary of Computing

register spilling
     
         (By analogy with spilling the contents
        of an overfull container) When a {compiler} is generating
        {machine code} and there are more {live variables} than the
        machine has {registers} and it has to transfer or "spill" some
        variables from registers to memory.
     
        (1997-06-24)