message: Unsupport byval attribute
diff: @@ -679,7 +679,6 @@ public:
  for (auto &attr : arg.getParent()->getAttributes()
  .getParamAttributes(arg.getArgNo())) {
  switch (attr.getKindAsEnum()) {
  - case llvm::Attribute::ByVal:
  case llvm::Attribute::InReg:
  case llvm::Attribute::SExt:
  case llvm::Attribute::ZExt:
  