Honour ByVal parameter attribute in llvm2cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48941 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm2cpp/CppWriter.cpp b/tools/llvm2cpp/CppWriter.cpp
index a10fec0..c18a22c 100644
--- a/tools/llvm2cpp/CppWriter.cpp
+++ b/tools/llvm2cpp/CppWriter.cpp
@@ -460,6 +460,8 @@
         Out << " | ParamAttr::NoReturn";
       if (attrs & ParamAttr::NoUnwind)
         Out << " | ParamAttr::NoUnwind";
+      if (attrs & ParamAttr::ByVal)
+        Out << " | ParamAttr::ByVal";
       Out << ";";
       nl(Out);
       Out << "Attrs.push_back(PAWI);";