- name compare of net names wasn't always case insensitive
- tentative evaluation was sometimes continued even after
a contradiction was detected because the return codes
of different edge examinations were not combined correctly.
same_nets, equivalent_pins, same_circuits and same_device_classes
can now be given at the beginning of the LVS script. This will
simplify building universal scripts with the run specific part at
the beginning (one "load" section).
The price are somewhat less specific error messages when something
fails in these methods.
The problem was that with the floating test case, the
ambiguity resolution sometimes assigned the wrong pins
and floating pins/connected pins were swapped.
One option is to make the ambiguity resolver consider
the pin connection state when tenatively evaluating
nodes.
Another option is to put more emphasis on net names
and use them for ambiguity resolution. This has helped
here.
Rerun LVS: a button is provided which allows re-running
the LVS or netlist extraction from the netlist browser.
TODO: a generic concept for triggering the generators
"Partial LVS" is a feature where it's possible to
select a layout subcell - running LVS then will only
compare against the corresponding schematic subcell, not
the whole tree. The magic is done by "align" which will
remove the upper hierarchy part.
Plus: added some missing files
Implementation details:
* scaling factor was introduced in DeviceExtractor::extract
* for easy implementation this is available in "sdbu"
* "sdbu" is made available in GSI
* to test this, the db::compare_netlist had to be enhanced to
exactly check device parameters
* enhancement of LVS script framework and doc updates
1.) tl::Stream now can read from resources
(:<path> URL's)
2.) LVS/DRC templates are kept as resource,
"create_template" uses the URL to read them.
3.) Added samples for LVS
4.) Configured LVS to match sample