[Bug rtl-optimization/102062] powerpc suboptimal unrolling simple array sum

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102062

--- Comment #13 from David Edelsohn <dje at gcc dot gnu.org> ---
I don't object to backporting Hao Chen's patch.  It has baked sufficiently on
trunk that it seems relatively stable.