Do not simplifyLatch for loops where hoisting increments couldresult in extra live range interferance

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220872 91177308-0d34-0410-b5e6-96231b3b80d8
Test Case for r220872:Do not simplifyLatch for loops where hoisting increments couldresult in extra live range interferance

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220873 91177308-0d34-0410-b5e6-96231b3b80d8