[Bug tree-optimization/102207] [12 Regression] wrong code with __builtin_sub_overflow() at -O1 and above with uint128

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102207

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 51409
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51409&action=edit
gcc12-pr102207.patch

Untested fix.