Cleaned-up version of gc attribute type merging.  I still don't like it 
very much, but I have a feeling we're never going to have an 
implementation that makes sense because of compatibility issues.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72715 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed