Bitcode: Move these tests into compatibility.ll

I added a couple of tests in r256982, but vedantk suggested that they
fit better into compatibility.ll, since they could catch format breaks
later on there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256990 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed