[HW] InnerSymbolTable: only check top-level ops for portlists #7767
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This changes the inner symbol table to only check top-level operations for portlists. Trying to dyn_cast every single operation to PortList is expensive, and is not a cost we have to pay when only module operations have port lists.
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This changes the inner symbol table to only check top-level operations for portlists. Trying to dyn_cast every single operation to PortList is expensive, and is not a cost we have to pay when only module operations have port lists.