-ftree-vectorize can't vectorize plus?

[Devang Patel]

> Can these type casts (from uchar to schar and back) be cleaned away
> by some pass before vectorization, or do we need to teach the vectorizer
> to ignore such type casts?

This was considered as tree-combiner's responsibility. However, I do not
know what is the current state and plan of tree-combiner pass. tree-combiner
pass, along with other combining activites, will remove unnecessary
cast (if possible).

-
Devang