Refactor: Use memory_op to set diag_const_nums #5246
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Using memory_op to set diag_const_nums allows diag consts being directly allocated to some hardwares like dsp. Most hardwares don't need this because they will automatically copy the consts to their device, but some will need you to do this manually. This is a way to solve this issue. It is a foundation for transplanting abacus to dsp hardware( or some similar hardwares later ). This has not influence on devices like gpu and dcu.