Created by: gongweibao

 if args.batch_merge > 1:
        pass_builder = build_st._create_passes_from_strategy()
        mypass = pass_builder.insert_pass(
            len(pass_builder.all_passes()) - 2, "multi_batch_merge_pass")
        # mypass = pass_builder.insert_pass(
        #     0, "multi_batch_merge_pass")
        mypass.set_int("num_repeats", args.batch_merge)