460 static void warn(Twine Message, StringRef Whence = "", StringRef Hint = "") {  in warn()  argument
462   if (!Whence.empty())  in warn()
463     errs() << Whence << ": ";  in warn()
469 static void warn(Error E, StringRef Whence = "") {  in warn()  argument
472       warn(IPE.message(), Whence);  in warn()
477 static void exitWithError(Twine Message, StringRef Whence = "",  in exitWithError()  argument
480   if (!Whence.empty())  in exitWithError()
481     errs() << Whence << ": ";  in exitWithError()
488 static void exitWithError(Error E, StringRef Whence = "") {  in exitWithError()  argument
497       exitWithError(IPE.message(), Whence, Hint);  in exitWithError()
502   exitWithError(toString(std::move(E)), Whence);  in exitWithError()
505 static void exitWithErrorCode(std::error_code EC, StringRef Whence = "") {  in exitWithErrorCode()  argument
506   exitWithError(EC.message(), Whence);  in exitWithErrorCode()
510                                  StringRef Whence = "") {  in warnOrExitGivenError()  argument
512     exitWithErrorCode(EC, Whence);  in warnOrExitGivenError()
514     warn(EC.message(), Whence);  in warnOrExitGivenError()