[Bug rtl-optimization/104773] compare with 1 not merged with subtract 1

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104773

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 56314
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56314&action=edit
testcase