Curvilinear optimization of metal interconnects using spline curves

A method, comprising:

• receiving, by one or more processors, a set of weights associated with one or more constraints of a circuit to be fabricated;
• determining, by the one or more processors, a first routing of a plurality of interconnects of the circuit including at least one spline corresponding to at least one of the plurality of interconnects having a straight-line profile;
• adjusting, by the one or more processors based on the set of weights, one or more parameters of the at least one spline to transition the at least one spline from a straight-line profile to a curved profile, wherein adjusting the one or more parameters yields a second routing of the plurality of interconnects;
• determining, by the one or more processors, a value of a merit function of the second routing of the plurality of interconnects;
• and
• generating, by the one or more processors based on the value of the merit function, a circuit layout of the plurality of interconnects for the circuit.