Hi, During the LEC step between the Yosys-synthesized netlist and the GL netlist, I am receiving warnings about the following cells: 1.

sky130_ef_sc_hd_decap_12

2.

sky130_fd_sc_hd_fill_1

3.

sky130_fd_sc_hd_tapvpwrvgnd_1

Since these cells are used to reduce DRC violations, maintain power rail continuity, and reduce IR drop, they likely have no logical function. I assume these warnings are not significant in terms of LEC. I can comment out the related lines containing these cells from the Yosys netlist and perform LEC later, where it succeeds. I would appreciate your thoughts on this issue.

Yes your statements are correct. It's all physical cells. So can be ignored during LEC.