timingPath/set_data_check和set_max_delay/set_multicycle_path
目录0.timingpath1.set_data_check1.1set_data_clk约束cdcpath1.2set_data_check和set_max_delay区别和使用场景2.set_mulicycle_path0.timingpathtimingpath的概念：start和end不只是reg的CP和REG的Dpin还可以是mem的D/Qpin和portport-->port这种fee