More __unknown_anytype work.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129269 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprConstant.cpp b/lib/CodeGen/CGExprConstant.cpp
index 822a999..b04ff0a 100644
--- a/lib/CodeGen/CGExprConstant.cpp
+++ b/lib/CodeGen/CGExprConstant.cpp
@@ -553,6 +553,7 @@
     case CK_ToVoid:
     case CK_Dynamic:
     case CK_ResolveUnknownAnyType:
+    case CK_ResolveUnknownAnyTypeToReference:
       return 0;
 
     // These might need to be supported for constexpr.