|
|
|
|
|
|
by kbolino
660 days ago
|
|
|
Is it really true that there's no scalar FPU at all? What about x87? The instructions are still there even in 64-bit long mode, they use their own registers, and there are enough idiosyncrasies (80-bit extended-double precision, stack-based operations, etc.) that I would expect it to be easier to just include a dedicated scalar x87 FPU than try to shoehorn x87 compatibility into the SIMD units. |
|
|