SLPVectorizer: handle scalars that are extracted from vectors (using ExtractElementInst).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184325 91177308-0d34-0410-b5e6-96231b3b80d8
Remove more uses of sys::Path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184328 91177308-0d34-0410-b5e6-96231b3b80d8