[Bug testsuite/122011] c-c++-common/ubsan/align-5.c is run multiple times but always at -O2

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122011

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
maybe ./gcc.dg/ubsan/ubsan.exp needs something similar to
r15-9015-g2cb728e14b5640

But that requires something more ...