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45 Commits

Author SHA1 Message Date
Matthias Köfferlein b413cb9d74
Netlist compare: Ambiguity resolution through name matching now default (can be turned off) (#594) 
* WIP: some refactoring

* WIP: some refactoring

* Netlist compare: introducing ambiguity resolution by net names

By default now net names are used for resolving ambiguities.
If net names match, they will be used to associate nets if the
choice is ambiguous. This is usually much faster and more reliable
than trying to resolve ambiguities through topology analysis.

This feature can be disabled using "consider_net_names(false)" in
the LVS script.

* Some refactoring, Jenkinsfile modified for better test coverage
 2020-06-29 20:47:57 +02:00
Matthias Koefferlein ee53869cbd Connect_implicit test with labels. 2020-05-23 21:21:30 +02:00
Matthias Koefferlein 8c91dd520d MERGE: Enhanced DRC and LVS documentation somewhat 2020-04-01 22:45:50 +02:00
Matthias Koefferlein c6b48acc76 Some small enhancements 
LVS: max_branch_complexity was wrong and missing from doc.

Updated test cases so MSVC 2017 builds should pass.

Windows build.bat updated so debug builds can be made.
 2020-03-04 21:48:00 +01:00
Matthias Koefferlein 78050b1e5f Implemented #471: Updated doc. 2020-02-27 17:30:23 +01:00
Matthias Koefferlein 02e38a2cd1 Merge branch 'issue-482' into issue-471 2020-02-27 15:49:35 +01:00
Matthias Koefferlein 8b73dffcfe Implementation done. Added tests. 2020-02-27 15:40:06 +01:00
Matthias Koefferlein 76f5e19ed8 Enhanced LVS with 'join_symmetric_nets'. Updated doc. Added test. 2020-02-27 13:35:36 +01:00
Matthias Koefferlein b8c82c4f8b Updated copyright notice to 2020 2020-01-05 00:59:43 +01:00
Matthias Koefferlein d0e6efa484 Implemented #444 (double-height standard-cell support). 2019-12-17 00:12:36 +01:00
Matthias Koefferlein a8cace399e Added some private tests to LVS tests for better coverage. 2019-11-24 18:25:56 +01:00
Matthias Koefferlein 4ce37160d5 Two bug fixes in net compare (tests required): 
- 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.
 2019-10-23 23:46:25 +02:00
Matthias Koefferlein 36ee1efe16 WIP: speedup LVS 'align' by flattening top-down 2019-10-21 22:14:36 +02:00
Matthias Koefferlein bf18000877 Added tests (breakout cells, LVS cheats) 2019-10-18 00:25:51 +02:00
Matthias Koefferlein 5c44a54676 Bugfix: don't try to extract netlist on errors 2019-10-16 00:49:33 +02:00
Matthias Koefferlein f8476bdf26 Fixed an issue with 'align' in LVS scripts - with multiple layout cells assigned to one schematic, align won't give the right results. 2019-10-05 09:30:38 +02:00
Matthias Koefferlein ca747771ac Allow preempt LVS configuration 
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.
 2019-10-01 00:21:27 +02:00
Matthias Koefferlein a3cecb2ebe WIP: enable multiple layout versions of one schematic circuit using 'same_circuit' 2019-09-30 23:08:15 +02:00
Matthias Koefferlein 55475e905f Fixed #352 (LVS should ignore equivalent_pins line for non-existing circuits) 
Same is true now for same_nets and same_circuits.
 2019-09-15 00:18:29 +02:00
Matthias Koefferlein 550e2622bf Put more amphasis on net names to resolve ambiguities 
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.
 2019-08-30 10:24:55 +02:00
Matthias Koefferlein db9ea27324 Re-run feature for DRC too. 2019-08-25 23:47:55 +02:00
Matthias Koefferlein 441f946f43 WIP: LVS rerun feature 2019-08-25 21:55:48 +02:00
Matthias Koefferlein 444e10d32f WIP: rerun LVS, partial LVS 
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.
 2019-08-24 22:56:20 +02:00
Matthias Koefferlein c543fe7a44 Added test for floating device terminals. 2019-08-24 19:42:00 +02:00
Matthias Koefferlein 3a93bc2162 Added test for mixed-hierarchy LVS case. 2019-08-24 00:13:38 +02:00
Matthias Koefferlein 3ae848bff4 Provide test case for spice reader with delegate for devices as subcircuits. Small bugfix in spice reader: wrong line number in warning. 2019-08-23 23:13:04 +02:00
Matthias Koefferlein 45cdefcf9a Provide strict mode for device classes, dmos3/dmos4 for LVS 2019-08-20 23:12:17 +02:00
Matthias Koefferlein 207e44837c LVS: allow missing device classes in reference schematic 
Reasoning: some devices may simply not be used in the
reference schematic.
 2019-08-19 22:26:50 +02:00
Matthias Koefferlein afb5cea576 Added "device_scaling" to LVS 
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
 2019-07-24 00:16:47 +02:00
Matthias Koefferlein 5dabd6093d Provide new 'align' feature in LVS for automatic circuit flattening. 2019-07-23 01:12:12 +02:00
Matthias Koefferlein aff8212f2f Provide 'align' method to auto-align circuit and cell hierarchy in LVS 2019-07-23 00:14:43 +02:00
Matthias Koefferlein 9d250d6df9 Using a larger branch complexity than default for LVS full test's netlist compare 
In addition: typo fixed, added doc for complexity configuration
parameters.
 2019-07-21 22:24:07 +02:00
Matthias Koefferlein df7195b81f Compatibility with ruby 1.8, force garbage cleanup for LVS/DRC and tests. 2019-07-21 10:23:08 +02:00
Matthias Koefferlein 6e6e449eef Consolidated test data for lvs:full - there are too many variants to support pure text compare. We use the netlist comparer now. 2019-07-21 09:20:44 +02:00
matthias 5f27341995 Some refactoring, better templates 
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
 2019-07-13 18:40:00 +02:00
matthias ebca5e1ce6 Bugfix: small LVS and DRC macro iessues (LVS and DRC menus not working etc.) 2019-07-13 17:00:05 +02:00
Matthias Koefferlein a47190f3ab Write short versions of LVS and L2N DB by default. 2019-07-12 17:43:43 +02:00
Matthias Koefferlein 9625caea65 WIP: added full LVS test. 2019-07-08 21:43:06 +02:00
Matthias Koefferlein b48453633f WIP: some fixes and small enhancements. New tests. 2019-07-08 00:09:10 +02:00
Matthias Koefferlein bc2d9448d6 Providing LVS tests. 2019-07-07 21:33:28 +02:00
Matthias Koefferlein 903b1f7505 WIP: fixed 'equivalent_pins' 2019-07-06 21:47:25 +02:00
Matthias Koefferlein fb8a64b0e1 WIP: updated LVS doc. 2019-07-06 09:37:54 +02:00
Matthias Koefferlein 24a0c3dd00 LVS template for macros. Enhancement: 'schematic' statement can now be anywhere in LVS script. 2019-07-06 09:35:51 +02:00
Matthias Koefferlein 0595ec2e0f WIP: one more test for LVS 2019-07-06 09:08:32 +02:00
Matthias Koefferlein 2f6aae7204 WIP: refactoring, added first tests for LVS 2019-07-06 08:52:40 +02:00