The submodule offset map can introduce "empty" remapping entries for
imported modules that don't introduce any new entities of a particular
kind. Allow these entries to be replaced with entries for another
loaded module.

In the included test case, selectors exhibit this behavior.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146870 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed