[Bug target/81616] Update -mtune=generic for the current Intel and AMD processors

[andrewm.roberts at sky dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81616

--- Comment #48 from Andrew Roberts <andrewm.roberts at sky dot com> ---
Correction, that should be 230000 not 23000 for the haswell drop in
performance.