[PATCH] Extend SLPVectorizer for cases where insertelement instructions must be rescheduled

[Nadav Rotem]

  Also,

            if (std::find(Rdx->begin(), Rdx->end(), UserInst) != Rdx->end())
              continue;

  You can use X.count(y) to search inside a set.

http://llvm-reviews.chandlerc.com/D3143