1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/TableGen/Record.cpp b/llvm/lib/TableGen/Record.cpp
index feef51f3d203..597ccb7ca144 100644
--- a/llvm/lib/TableGen/Record.cpp
+++ b/llvm/lib/TableGen/Record.cpp
@@ -917,6 +917,13 @@ const Init *UnOpInit::Fold(const Record *CurRec, bool IsFinal) const {
       return NewInit;
     break;
 
+  case INITIALIZED:
+    if (isa<UnsetInit>(LHS))
+      return IntInit::get(RK, 0);
+    if (LHS->isConcrete())
+      return IntInit::get(RK, 1);
+    break;
+
   case NOT:
     if (const auto *LHSi = dyn_cast_or_null<IntInit>(
             LHS->convertInitializerTo(IntRecTy::get(RK))))
@@ -1052,6 +1059,9 @@ std::string UnOpInit::getAsString() const {
   case TOUPPER:
     Result = "!toupper";
     break;
+  case INITIALIZED:
+    Result = "!initialized";
+    break;
   }
   return Result + "(" + LHS->getAsString() + ")";
 }