lvs: only consider licon-poly connectivity with npc #19
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Signed-off-by: gatecat <gatecat@ds0.me>
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Hi @gatecat, thanks for the PR! It looks good to me, but I'm waiting for a second opinion, and then we can merge it. |
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On the Sky130 process, licon only connects down to poly when the poly is exposed via the
npclayer. LVS was assuming that licon always connects to poly regardless of npc; so a design with missing npc on a poly connection would pass LVS when it shouldn't.