Agner's table[1] for Intel IceLake/TigerLake shows FDIV to have higher latency, but slightly better throughput. For latency: - DIV/IDIV r32: 12 cycles - DIV/

Agner's table[1] for Intel IceLake/TigerLake shows FDIV to have higher latency, but slightly better throughput. For latency: - DIV/IDIV r32: 12 cycles - DIV/IDIV r64: 15 cycles - FDIV: 14–16 cycles Throughput: - DIV/IDIV r32: 6 cycles - DIV/IDIV r64: 10 cycles - FDIV: 4–5 cycles I didn't check for a more recent CPU. [1] https://www.agner.org/optimize/instruction_tables.pdf https://www.agner.org/optimize/instruction_tables.pdf page 366 & 369