[Bug middle-end/123163] vectorization of pointer arithmetic within struct

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123163

--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Sure, I see why it is not profitable with N=16. 

But why does it decide to vectorize with N=32? If it does become profitable
with N=32, then how can I tell GCC to also assume that n >= 32 in bar? If it is
not profitable, then vectorizing it sounds like a bug.