[Bug tree-optimization/116556] __builtin_object_size does not handle `ptr + (PHI<4,8>)`, only `PHI`

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116556

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note I think this is also the reason why I get a failure in
gcc.dg/Warray-bounds-92.c too.