AVX512 in FLOPS test

[sergcpp]

Tested on i9-10920X, almost doubles the FLOPS score (117.3 vs 61.74 on a single core).

[FCLC]

Yup, also works on debian sid using alder lake/Sapphire rapids.

( 8 P-cores/16threads of AVX-512 :

Run 1/10 Time: 0.08902
Run 2/10 Time: 0.08652
Run 3/10 Time: 0.08655
Run 4/10 Time: 0.0866
Run 5/10 Time: 0.08652
Run 6/10 Time: 0.08653
Run 7/10 Time: 0.08604
Run 8/10 Time: 0.08657
Run 9/10 Time: 0.08641
Run 10/10 Time: 0.08656
Executed 1248 billion instructions/second
Score: 30.17 Phenom's II's worth's

Single P-core/Single thread:

Run 1/10 Time: 0.6904
Run 2/10 Time: 0.6853
Run 3/10 Time: 0.6853
Run 4/10 Time: 0.6853
Run 5/10 Time: 0.6853
Run 6/10 Time: 0.6853
Run 7/10 Time: 0.6852
Run 8/10 Time: 0.6853
Run 9/10 Time: 0.6853
Run 10/10 Time: 0.6852
Executed 156.7 billion instructions/second
Score: 15.11 Phenom's II's worth's

)