Fix some checking that was causing duraid to get a perplexing assertion
instead of a happy error message


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23816 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/DAGISelEmitter.h b/utils/TableGen/DAGISelEmitter.h
index 7fd0194..dbedbce 100644
--- a/utils/TableGen/DAGISelEmitter.h
+++ b/utils/TableGen/DAGISelEmitter.h
@@ -226,7 +226,7 @@
     /// ContainsUnresolvedType - Return true if this tree contains any
     /// unresolved types.
     bool ContainsUnresolvedType() const {
-      if (Ty == MVT::LAST_VALUETYPE) return true;
+      if (!hasTypeSet()) return true;
       for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
         if (getChild(i)->ContainsUnresolvedType()) return true;
       return false;