[Bug rtl-optimization/96337] GCC 10.2: twice as slow for -O2 -march=x86-64 vs. GCC 9.3/8.4

[aros at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96337

--- Comment #2 from Artem S. Tashkinov <aros at gmx dot com> ---
Looks like even kernel performance is affected:
https://lore.kernel.org/lkml/20200507224530.2993316-1-ja...@zx2c4.com/

That was surely not a change for the better.