set_wire_load_mode and set_wire_load_model not supported

I just got these messages:Warning: Constraint 'set_wire_load_mode' is not supported by icc_shell. (SDC-3)
Warning: Constraint 'set_wire_load_model' is not supported by icc_shell. (SDC-3)

both mode and model not supported, what happened. The SDC file is generated by Design Compiler.
Please help, do we have some commands to replace them?

wire load model只是综合工具用来估计线延时用的，ICC是不需要的，去掉即可