49 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements the main entry point for the suite of XRay tools. All10// 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 22using namespace llvm;23using namespace llvm::xray;24 25int 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 is33 // 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