[Bug ipa/96337] [10/11 Regression] GCC 10.2: twice as slow for -O2 -march=x86-64 vs. GCC 9.3/8.4

[david.bolvansky at gmail dot com]

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

--- Comment #14 from Dávid Bolvanský <david.bolvansky at gmail dot com> ---
Or change -Os to be gcc10 -O2 with less inlining, -revert O2 to gcc9 -02 and
implement -Oz to create agressive “-Os”.