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
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 is
33      // the top-level subcommand.
34      if (SC == &*cl::TopLevelSubCommand) {
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