> But linking new binaries with old binaries, and at the same time being concerned with performance? It's more than that: it's using both old obsolete code and

> But linking new binaries with old binaries, and at the same time being concerned with performance? It's more than that: it's using both old obsolete code and AVX-512 using code in very tight alternation. I.e,. using both within a loop of a few hundred instructions or less. This is much less likely that linking an old library and occasionally calling into it.