https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108110
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> --- CPU is AMD Ryzen 7 5700G, so -march flag is zen3.
dcb314 at hotmail dot com via Gcc-bugs Wed, 14 Dec 2022 11:10:32 -0800
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108110
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> --- CPU is AMD Ryzen 7 5700G, so -march flag is zen3.