[InstSimplify] Use m_APInt instead of m_ConstantInt in ((V + N) & C1) | (V & C2)...

[InstSimplify] Use m_APInt instead of m_ConstantInt in ((V + N) & C1) | (V & C2) handling in order to support splat vectors.

The tests here are have operands commuted to provide more coverage. I also commuted one of the instructions in the scalar tests so the 4 tests cover the 4 commuted variations

Differential Revision: https://reviews.llvm.org/D33599

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304021 91177308-0d34-0410-b5e6-96231b3b80d8