diff --git a/lib/Driver/ToolChains/Darwin.cpp b/lib/Driver/ToolChains/Darwin.cpp
index 8f8d97ff3d2..15bf0052c07 100644
--- a/lib/Driver/ToolChains/Darwin.cpp
+++ b/lib/Driver/ToolChains/Darwin.cpp
@@ -1029,6 +1029,8 @@ void Darwin::addProfileRTLibs(const ArgList &Args,
     addExportedSymbol(CmdArgs, "___llvm_profile_filename");
     addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
     addExportedSymbol(CmdArgs, "_lprofCurFilename");
+    addExportedSymbol(CmdArgs, "_lprofDirMode");
+    addExportedSymbol(CmdArgs, "_lprofMergeValueProfData");
   }
 }