[Bug tree-optimization/121828] during GIMPLE pass: bitintlower ICE: definition in block 2 follows the use with __builtin_sub_overflow() and other function that does not write to used memory

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121828

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 62331
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62331&action=edit
Another testcase but not using memset