[Bug c/128353] internal compiler error: in as_a, at is-a.h:255

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128353

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 66068
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=66068&action=edit
Reduced

`if (t_5(D) == tt)` is invalid gimple.