diff --git a/llvm/lib/Target/CppBackend/CPPBackend.cpp b/llvm/lib/Target/CppBackend/CPPBackend.cpp
index 7f822b6..f610fbb9 100644
--- a/llvm/lib/Target/CppBackend/CPPBackend.cpp
+++ b/llvm/lib/Target/CppBackend/CPPBackend.cpp
@@ -1579,6 +1579,8 @@
     Out << "\");";
     nl(Out) << iName << "->setVolatile("
             << (cxi->isVolatile() ? "true" : "false") << ");";
+    nl(Out) << iName << "->setWeak("
+            << (cxi->isWeak() ? "true" : "false") << ");";
     break;
   }
   case Instruction::AtomicRMW: {