[Bug rtl-optimization/88904] Basic block incorrectly skipped in jump threading.

[matmal01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88904

--- Comment #1 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Created attachment 45458
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45458&action=edit
Problematic testcase