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Promote label from level1 to level0(toplevel)

Knp

Hi,

I want to promote & place only required labels present in lower hierarchy of layout to top level of the layout

- Lower hierarchy has many labels, I don't want all of them to be promoted to top level, so first I extracted all the terminal names present in the top level of schematic present corresponding to top level layout using below code

cv=dbOpenCellView("libName" "cellView" "schematic")

terName=cv~>terminals~>name

tmpout=outfile("./knp")

poport=tmpout

foreach(term terName

fprintf(poport "%s\n" term)

)

Now I have all the labels list which are present in the top level of schematic corresponding the layout and this labels list I will be using to place them at the top level of layout

if -> schematic label/terminal matches(which I have extracted using above code) with the label present in n-1 level of layout, skill code should place a label with same name at same location at top level of the layout

The above three colored statements is my exact requirement ... !!!

Thanks,

knp

  • Hi,

    The code snippet you provide is quite weird...

    Why do you print the terminal names (when you already have them as a list) and why do you replace poport which is an important variable to Virtuoso?

    You will probably find many articles on Cadence Support explaining how to achieve similar things. Anyway here is a custom-made function that should do what you want :

    (defun promote_labels_to_top (@key sch_cv lay_cv @rest _args)
  "Copy labels from lower level of LAY_CV if they match existing terminals in SCH_CV"
  ;; Build a table containing all terminal names
  (let ((table (makeTable 'term_names nil)))
    (foreach term sch_cv->terminals
      (setf table[term->name] t))
    ;; Browse lower level of hierarchy
    (foreach inst lay_cv->instances
      ;; Browse shapes to retrieve labels
      (foreach shape inst->master->shapes
        ;; Here we check both if shape is a label and if it belongs to terminal names
        (when (and shape->theLabel table[shape->theLabel])
          ;; Copy label to top level
          (dbCopyShape shape lay_cv inst->transform)
          )));foreach shape ;foreach inst
    ));let ;def

    You can call it using :

    (promote_labels_to_top ?sch_cv (dbOpenCellView "libName" "cellView" "schematic") ?lay_cv (dbOpenCellView "libName" "cellView" "layout"))

    Cheers

    Aurélien

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