1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 2e4ed5d9d0..f0655e6784 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -913,6 +913,8 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
       } else {
         DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
         addType(Arg, DIType(Ty));
+        if (DIType(Ty).isArtificial())
+          addFlag(Arg, dwarf::DW_AT_artificial);
         Buffer.addChild(Arg);
       }
     }