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

[Arch D. Robison]

  Thanks for the suggestions.  the find-->count change will eliminate the long line issue :-)

  I didn't understand the suggestion of changing:

      IE->removeFromParent();
      IE->insertAfter(x);`

  to:

      IE->moveBefore(x)

  Aren't these different?  I couldn't find a "moveAfter" method.

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