[monocasa]

I'm not sure that it's completed as a separate fp16 ALU. There's cute ways to share logic between a dual fp16 alu and a single fp32 ALU such that it's really just one ALU with those being different ops.

[a_e_k]

As I understand it, that's how the original MMX got started. It was largely reusing the x87 ALU, but breaking the carry chains at the obvious points.