[LV] Remove type restriction for vector phi creation

We previously only created a vector phi node for an induction variable if its
type matched the type of the canonical induction variable.

Differential Revision: https://reviews.llvm.org/D29776

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294755 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed