The wholechip floorplan is very important before you start the layout.# D4 ]2 C( z1 v1 p
Then the position of output pin are fixed for each sub block,and the line drawing will be smooth.$ w N! e2 D; |1 X& |, U9 }
Finally,the drc & lvs could be so easy to do . " Z, u/ ~! }6 b' N# \% uBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.