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1 definition found
 for instruction prefetch
From The Free On-line Dictionary of Computing (30 December 2018) :

  instruction prefetch
  prefetch
  
      A technique which attempts to minimise the time
     a processor spends waiting for machine instructions to be
     fetched from memory.  Instructions following the one currently
     being executed are loaded into a prefetch queue when the
     processor's external bus is otherwise idle.  If the
     processor executes a branch instruction or receives an
     interrupt then the queue must be flushed and reloaded from
     the new address.
  
     Instruction prefetch is often combined with pipelining in
     an attempt to keep the pipeline busy.
  
     By 1995 most processors used prefetching, e.g. Motorola
     680x0, Intel 80x86.
  
     [First processors using prefetch?]
  
     (1998-03-29)
  

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