shift whole design in Xillinx FPGA
Your question relates very specifically to particular features and architectural parameters for a certain FPGA. You should be directing this question directly to the support engineers at the FPGA manufacturer. If your endeavor is one of an educational research type you may find that there are support folks from the manufacturer that will want to help out. 

Also note that what you are proposing to evaluate is not going to be able to be done with a generic design module that uses an end to end tool flow. In fact I suspect that the FPGA manufacturer will guide you to build test configurations that map directly to a specific part architecture. Such test configurations would only use a very specific subset of the development tool chain and the circuit realization in the configuration will be rather simple.