1 files changed, 6 insertions, 6 deletions

diff --git a/include/llvm/IR/ModuleSummaryIndexYAML.h b/include/llvm/IR/ModuleSummaryIndexYAML.h
index a8c8ff9ef2ebb..aeb66633f2c85 100644
--- a/include/llvm/IR/ModuleSummaryIndexYAML.h
+++ b/include/llvm/IR/ModuleSummaryIndexYAML.h
@@ -28,14 +28,14 @@ template <> struct ScalarEnumerationTraits<TypeTestResolution::Kind> {
 
 template <> struct MappingTraits<TypeTestResolution> {
   static void mapping(IO &io, TypeTestResolution &res) {
-    io.mapRequired("Kind", res.TheKind);
-    io.mapRequired("SizeBitWidth", res.SizeBitWidth);
+    io.mapOptional("Kind", res.TheKind);
+    io.mapOptional("SizeBitWidth", res.SizeBitWidth);
   }
 };
 
 template <> struct MappingTraits<TypeIdSummary> {
   static void mapping(IO &io, TypeIdSummary& summary) {
-    io.mapRequired("TTRes", summary.TTRes);
+    io.mapOptional("TTRes", summary.TTRes);
   }
 };
 
@@ -53,7 +53,7 @@ namespace yaml {
 
 template <> struct MappingTraits<FunctionSummaryYaml> {
   static void mapping(IO &io, FunctionSummaryYaml& summary) {
-    io.mapRequired("TypeTests", summary.TypeTests);
+    io.mapOptional("TypeTests", summary.TypeTests);
   }
 };
 
@@ -100,8 +100,8 @@ template <> struct CustomMappingTraits<GlobalValueSummaryMapTy> {
 
 template <> struct MappingTraits<ModuleSummaryIndex> {
   static void mapping(IO &io, ModuleSummaryIndex& index) {
-    io.mapRequired("GlobalValueMap", index.GlobalValueMap);
-    io.mapRequired("TypeIdMap", index.TypeIdMap);
+    io.mapOptional("GlobalValueMap", index.GlobalValueMap);
+    io.mapOptional("TypeIdMap", index.TypeIdMap);
   }
 };