add flatten -nocleanup option #5037
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Confirmed working by customer. |
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What are the reasons/motivation for this change?
Some (third-party) analysis passes work only on flattened modules, but still want to report back results for each module in the hierarchy.
Explain how this is achieved.
Add an option to not delete the submodules when running flatten. (The functionality is already there, just needs a flag.)
If applicable, please suggest to reviewers how they can test the change.
Load a hierarchical design (with a top module), run
flatten -nocleanup, observe the number of modules being more than 1, but no module instantiating another module.