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The aiger2 backend checks for unsupported cells during indexing. This causes it to fail when `$connect` or `$tribuf` (as workaround for missing 'z-$buf support) cells are present in the module. Since bufnorm adds these cells automatically, it is very easy to end up with them due to unconnected wires or e.g. `$specify` cells, which do not pose an actual problem for the backend, since it will never encounter those during a traversal. With this, we ignore them during indexing and only produce an actual error message if we reach such a cell during the traversal. |
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.. | ||
aiger.cc | ||
Makefile.inc |