- bool isVarArg, ///< Whether this is a variable argument length function
- const ParamAttrsList *Attrs = 0
- ///< Indicates the parameter attributes to use, if any. The 0th entry
- ///< in the list refers to the return type. Parameters are numbered
- ///< starting at 1. This argument must be on the heap and FunctionType
- ///< owns it after its passed here.