Index: lib/CodeGen/CGDebugInfo.cpp
===================================================================
--- lib/CodeGen/CGDebugInfo.cpp
+++ lib/CodeGen/CGDebugInfo.cpp
@@ -2847,6 +2847,10 @@
       Flags |= llvm::DINode::FlagTypePassByReference;
     else
       Flags |= llvm::DINode::FlagTypePassByValue;
+
+    // Record if a C++ record is trivial type.
+    if (CXXRD->isTrivial())
+      Flags |= llvm::DINode::FlagTrivial;
   }
 
   llvm::DICompositeType *RealDecl = DBuilder.createReplaceableCompositeType(