https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125692
--- Comment #4 from Drea Pinski <pinskia at gcc dot gnu.org> --- The issue is there is no usage outside of the loop besides a `debug stmt` of _7 so there was no phi for the Closed loop SSA form which would have made this work. I have not looked into how unswitch would detect this and then reset the `debug stmt` correctly.
