prog.From = a[0]
			prog.Reg = p.getRegister(prog, op, &a[1])
			prog.To = a[2]
		case sys.Loong64:
			switch {
			// Loong64 atomic instructions with one input and two outputs.
			case arch.IsLoong64AMO(op):
				prog.From = a[0]
				prog.To = a[1]
				prog.RegTo2 = a[2].Reg

			case arch.IsLoong64PRELD(op):
				prog.From = a[0]
				prog.AddRestSourceArgs([]obj.Addr{a[1], a[2]})

			default: