We still don't really have an equivalent of "AssertXExt" in DAG, so we don't
exploit the guarantees on the receiving side yet, but this should produce
conservatively correct code on iOS ABIs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282069 91177308-0d34-0410-b5e6-96231b3b80d8