Agner Fog's instruction tables list it as issuing ~23 fused uops (a bit more or fewer depending on generation) and a throughput of 1 per ~32 cycles. That seems

Agner Fog's instruction tables list it as issuing ~23 fused uops (a bit more or fewer depending on generation) and a throughput of 1 per ~32 cycles. That seems like it could be microcoded.