[Bug target/103197] ppc inline expansion of memcpy/memmove should not use lxsibzx/stxsibx for a single byte

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103197

--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 52131
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52131&action=edit
Proposed patch