https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100850
--- Comment #2 from Vlad <vsolontsov at volanttrading dot com> --- Yet another piece -- appears with -O2/-O3/-Os. -O0/-O1 is free from this bug.
vsolontsov at volanttrading dot com via Gcc-bugs Tue, 01 Jun 2021 01:41:42 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100850
--- Comment #2 from Vlad <vsolontsov at volanttrading dot com> --- Yet another piece -- appears with -O2/-O3/-Os. -O0/-O1 is free from this bug.