module Risc

  # SlotToReg moves data into a register from memory.
  # RegToSlot moves data into memory from a register.
  # Both use a base memory (a register)

  # This is because that is what cpu's can do. In programming terms this would be accessing
  #  an element in an array, in the case of SlotToReg setting the value in the array.

  # btw: to move data between registers, use Transfer

  class SlotToReg < Getter

  end

  # Produce a SlotToReg instruction.
  # Array and to are registers or symbols that can be transformed to a register by resolve_to_register
  # index resolves with resolve_to_index.
  def self.slot_to_reg( source , array , index , to)
    index = resolve_to_index( array , index)
    array = resolve_to_register( array )
    to = resolve_to_register( to )
    SlotToReg.new( source , array , index , to)
  end
end