[HW] Pass to remove dead ports
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- C++
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Description
in FIRRTL there is RemoveUnusedPortsPass but it would be nice to implement the same pass
at HW dialect since Comb canonicalization is stronger. Also it would be useful functionality to CIRCT users.
From a perspective FIRRTL, a recent change of name preservation prohibits RemoveUnusedPortsPass at FIRRTL level so
it is necessary to run the pass after eliminating dead named wires.
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