[SelectionDAG] allow vector types with isBitwiseNot()

The test diff in not-and-simplify.ll is from a use in SimplifyDemandedBits,
and the test diff in add.ll is from a DAGCombiner transform.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342594 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed