[Bug tree-optimization/92860] [9/10/11/12 regression] Global flags affected by -O settings are clobbered by optimize attribute

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92860

--- Comment #48 from Martin Liška <marxin at gcc dot gnu.org> ---
> -O3 fine. Looks like an march=bdver2 issue.

All right, so please attach me here the pre-processed source file. I tried
doing that myself (using -O3 -march=bdver2), but it was fine (for some reason).