[FIRRTL] Enable Wire Elimination #7073
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This converts wires into nodes when there is one write to the wire and it dominates the reads. By converting to nodes, this pass does not have to worry about symbols, references, or annotations. Those are just copied to the node.
… nodes. Nodes and wires should have no semantic differences.
jackkoenig
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This reverts commit f5a0969.
jackkoenig
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Activate the wire elimination pass in the firtool pipeline.