[Bug tree-optimization/90285] Poor optimised codegen for memmove() back on top of oneself

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90285

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 60559
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60559&action=edit
Testcase