[Bug middle-end/90025] [9 Regression] botan2 miscompilation on s390x-linux since r268957

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90025

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46112
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46112&action=edit
gcc9-pr90025.patch

Untested fix.