1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/lib/Support/YAMLTraits.cpp b/llvm/lib/Support/YAMLTraits.cpp
index c87790efb8c..fc23f31de33 100644
--- a/llvm/lib/Support/YAMLTraits.cpp
+++ b/llvm/lib/Support/YAMLTraits.cpp
@@ -233,6 +233,13 @@ bool Input::matchEnumScalar(const char *Str, bool) {
   return false;
 }
 
+bool Input::matchEnumFallback() {
+  if (ScalarMatchFound)
+    return false;
+  ScalarMatchFound = true;
+  return true;
+}
+
 void Input::endEnumScalar() {
   if (!ScalarMatchFound) {
     setError(CurrentNode, "unknown enumerated scalar");
@@ -508,6 +515,13 @@ bool Output::matchEnumScalar(const char *Str, bool Match) {
   return false;
 }
 
+bool Output::matchEnumFallback() {
+  if (EnumerationMatchFound)
+    return false;
+  EnumerationMatchFound = true;
+  return true;
+}
+
 void Output::endEnumScalar() {
   if (!EnumerationMatchFound)
     llvm_unreachable("bad runtime enum value");