diff --git a/lld/COFF/PDB.cpp b/lld/COFF/PDB.cpp
--- a/lld/COFF/PDB.cpp
+++ b/lld/COFF/PDB.cpp
@@ -811,6 +811,10 @@
       // Unclear what this is for.
       break;
 
+    case DebugSubsectionKind::XfgHashType:
+    case DebugSubsectionKind::XfgHashVirtual:
+      break;
+
     default:
       warn("ignoring unknown debug$S subsection kind 0x" +
            utohexstr(uint32_t(ss.kind())) + " in file " + toString(&file));
diff --git a/llvm/include/llvm/DebugInfo/CodeView/CodeView.h b/llvm/include/llvm/DebugInfo/CodeView/CodeView.h
--- a/llvm/include/llvm/DebugInfo/CodeView/CodeView.h
+++ b/llvm/include/llvm/DebugInfo/CodeView/CodeView.h
@@ -330,6 +330,9 @@
   MergedAssemblyInput = 0xfc,
 
   CoffSymbolRVA = 0xfd,
+
+  XfgHashType = 0xff,
+  XfgHashVirtual = 0x100,
 };
 
 /// Equivalent to CV_ptrtype_e.
diff --git a/llvm/lib/DebugInfo/PDB/Native/FormatUtil.cpp b/llvm/lib/DebugInfo/PDB/Native/FormatUtil.cpp
--- a/llvm/lib/DebugInfo/PDB/Native/FormatUtil.cpp
+++ b/llvm/lib/DebugInfo/PDB/Native/FormatUtil.cpp
@@ -66,6 +66,8 @@
       RETURN_CASE(DebugSubsectionKind, MergedAssemblyInput,
                   "merged assembly input");
       RETURN_CASE(DebugSubsectionKind, CoffSymbolRVA, "coff symbol rva");
+      RETURN_CASE(DebugSubsectionKind, XfgHashType, "xfg hash type");
+      RETURN_CASE(DebugSubsectionKind, XfgHashVirtual, "xfg hash virtual");
     }
   } else {
     switch (Kind) {
@@ -89,6 +91,11 @@
                   "DEBUG_S_MERGED_ASSEMBLYINPUT");
       RETURN_CASE(DebugSubsectionKind, CoffSymbolRVA,
                   "DEBUG_S_COFF_SYMBOL_RVA");
+      RETURN_CASE(DebugSubsectionKind, XfgHashType,
+                  "DEBUG_S_XFGHASH_TYPE");
+      RETURN_CASE(DebugSubsectionKind, XfgHashVirtual,
+                  "DEBUG_S_XFGHASH_VIRTUAL");
+
     }
   }
   return formatUnknownEnum(Kind);