コメント見る限り n 以外今の所無さそう

//===----------------------------------------------------------------------===// // // This file defines the database of builtin functions. // // BUILTIN(Id, Name, Attrs) // - Id is an identifier suitable for use in C++ // - Name is a string literal for the name to which the builtin should be // bound in Swift // - Attrs specifies information about attributes of the function: // n -> readnone // //===----------------------------------------------------------------------===//