[Bug tree-optimization/98727] [11 Regression] Miscompiled signed overflow check since r11-6580

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98727

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 49992
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49992&action=edit
gcc11-pr98727.patch

Untested fix.