\brief Replace sign-bit extractions from the first given Varnode with the second Varnode Look for either: - `V >> 0x1f` - `V s>> 0x1f` Allow for the value to be COPYed around. \param firstVn is the first given Varnode \param replaceVn is the Varnode to replace it with in each extraction \param data is the function holding the Varnodes
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