Fix List-of-List Processing

Fix VarListElementInit::resolveListElementReference to return a
partially resolved VarListElementInint in the case where full
resolution is not possible.  This allows TableGen to make forward
progress resolving certain complex list expressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141315 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed