Need automatic generation of layout assembly (simple in-line, all with all) to run abutment checks for stdcells

[sergeiandreyev]

No description provided.

[smunaut]

FWIW I had done something similar for sky130 to find that kind of issue. I quickly hacked it for sg13g2
try_cells.zip

It tries every cell against every cell in different orientations.
It doesn't create continuous rows, but at least for me that was enough to run through DRC

[sergeiandreyev]

@smunaut, great! thank you!

[smunaut]

drc.xml.zip

Attached in the DRC maximal results from the klayout deck on the test gds generated by the scripts.

• There are the NW.b known from ebufn_2.
• There is a few CntB.a1 those are false positives. The script placed the columns too close and they touched. I didn't re-run because it takes like 2h to run the klayout drc deck ...
• There are a bunch of M1.b and those look like real potential issues.

EDIT: All the M1.b issue involve dllr_1 cell it seems.

[akrinke]

@smunaut Thank you! I've added the layout to our regression test suite.