Techniques include retrieving a first structural netlist (SN1) that indicates electronic components, values of programmable parameters, and connections for a first electronic circuit, and retrieving a first placed and routed netlist (PR1) that indicates physical placement of the electronic components and physical routing of connections for SN1. Also retrieved is a second structural netlist (SN2) for a different second electronic circuit. For each component in SN2, a matching component, if any, is found in SN1 based on type of component and inputs that are output from other matching components. A different second placed and routed netlist (PR2) is generated for the second circuit by deriving new placement and routing for only for non-matching components in SN2.