How to distinguish always on gates in power off block?

[RCircuit]

One power off block has pass-through signals which should be driven by always on cells. I have one question, when writing out netlist for this block, how to distinguish the always on cells in the power off gates sea? Thanks for your sharing.

 

[jbeniston]

By the cell name. For some tools, it might also be obvious from the instance name.

 

[RCircuit]

So there is another lib for always on cells, they have special name, like 'AO_BUF...'? Or same lib, but instance name is special?
I thought some companies use power present netlist, always on cells have power pins connecting to always on power.
The problem is what the power tool like conformal power needs?