[LV] Pass profitability analysis in vectorizer constructor (NFC)

The vectorizer already holds a pointer to one cost model artifact in a member
variable (i.e., MinBWs). As we add more, it will be easier to communicate these
artifacts to the vectorizer if we simply pass a pointer to the cost model
instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283373 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed