[Bug c++/82505] g++ -O3 -funroll-loops generates weird code

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82505

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Ah no, because we have global pointers here, with potentially unknowable
aliasing, as Alexander said.