1 //===- llvm-xray.cpp: XRay Tool Main Program ------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the main entry point for the suite of XRay tools. All 10 // additional functionality are implemented as subcommands. 11 // 12 //===----------------------------------------------------------------------===// 13 // 14 // Basic usage: 15 // 16 // llvm-xray [options] <subcommand> [subcommand-specific options] 17 // 18 #include "xray-registry.h" 19 #include "llvm/Support/CommandLine.h" 20 #include "llvm/Support/raw_ostream.h" 21 22 using namespace llvm; 23 using namespace llvm::xray; 24 25 int main(int argc, char *argv[]) { 26 cl::ParseCommandLineOptions(argc, argv, 27 "XRay Tools\n\n" 28 " This program consolidates multiple XRay trace " 29 "processing tools for convenient access.\n"); 30 for (auto *SC : cl::getRegisteredSubcommands()) { 31 if (*SC) { 32 // If no subcommand was provided, we need to explicitly check if this is 33 // the top-level subcommand. 34 if (SC == &cl::SubCommand::getTopLevel()) { 35 cl::PrintHelpMessage(false, true); 36 return 0; 37 } 38 if (auto C = dispatch(SC)) { 39 ExitOnError("llvm-xray: ")(C()); 40 return 0; 41 } 42 } 43 } 44 45 // If all else fails, we still print the usage message. 46 cl::PrintHelpMessage(false, true); 47 return 0; 48 } 49