[Bug tree-optimization/109441] missed optimization when all elements of vector are known

[hiraditya at msn dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109441

--- Comment #3 from AK <hiraditya at msn dot com> ---
> But IMHO it's academic, right?

yes. i was just messing with vector codegen. But in case all the elements of a
vector/array are same, maybe the loop can be replaced with equivalent
computation?