[Bug tree-optimization/80603] Optimize loads from constant arrays or aggregates with arrays

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80603

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Would also be a suitable enhancement for fold_const_aggregate_ref in general
if you consider IPA-VRP propagation and

 _1 = AGGR[param_2(D)];
 return _1;