Functional ECO involves Design Wares
HEIDI ZHENG
Manager at NanDigits, Functional Netlist ECO, Functional Safety Fault Verification
Design Ware instance names can be changed during Synopsys DC synthesis. It will cause trouble in functional ECO if the RTL changes involve the Design Ware instances. For example, Conformal ECO would add lots of redundant gates if the Design Ware instances are not one to one mapping in two netlists. While GOF can solve this issue by remapping the Design Ware instances in ECO. Check this out in more detail.