Re: [RFC PATCH 0/4] Idea for using hardfloat in PPC

[Richard Henderson]

On 10/5/22 07:37, Víctor Colombo wrote:
> However, the impact in performance was not the expected. In x86_64 I
> had a small 3% improvement, while in a Power9 machine there was a small
> performance loss, as can be seem below (100 executions).
>
> |        | min [s] | max [s] | avg [s] |
> | before | 122.309 | 123.459 | 122.747 |
> | after  | 123.906 | 125.016 | 124.373 |

I hope this is because you didn't handle the most common cases: add, sub, mul, 
div.

The logic seems plausible, as far as it goes, and would work for the FR bit as well which 
afair isn't handled at all at the moment.  I'll review properly in a little while.


r~