Performs post-place or post-route optimizations to improve the path delay of inter-SLR
connections. The optimization adjusts the locations of the driver, load, or both along
the SLR crossing. Replication is supported in post-route optimization if the driver has
inter- and intra-SLR loads. A TNS cleanup option is supported with the
-tns_cleanup
switch with the -slr_crossing_opt
switch. TNS cleanup allows some slack degradation on other paths when performing
inter-SLR path optimization as long as the overall WNS of the design does not degrade.
For UltraScale devices, either a TX_REG or an RX_REG SLL register
can be targeted. In UltraScale+
devices both, TX_REG and RX_REG registers on the same inter-SLR connection can be
targeted.