[Bug tree-optimization/48052] loop not vectorized if index is "unsigned int"

[hiraditya at msn dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48052

--- Comment #13 from AK <hiraditya at msn dot com> ---
We have an updated patch that works for both the cases.
https://gcc.gnu.org/ml/gcc-patches/2015-05/msg01991.html