[Bug middle-end/95810] Spurious UBSan warning when computing the opposite of the absolute value of INT_MIN

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95810

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48769
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48769&action=edit
gcc11-pr95810.patch

Untested fix.