1 //===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===// 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 // llvm-cov is a command line tools to analyze and report coverage information. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/ADT/StringRef.h" 14 #include "llvm/ADT/StringSwitch.h" 15 #include "llvm/Support/CommandLine.h" 16 #include "llvm/Support/InitLLVM.h" 17 #include "llvm/Support/Path.h" 18 #include "llvm/Support/Process.h" 19 #include "llvm/Support/raw_ostream.h" 20 #include <string> 21 22 using namespace llvm; 23 24 /// The main entry point for the 'show' subcommand. 25 int showMain(int argc, const char *argv[]); 26 27 /// The main entry point for the 'report' subcommand. 28 int reportMain(int argc, const char *argv[]); 29 30 /// The main entry point for the 'export' subcommand. 31 int exportMain(int argc, const char *argv[]); 32 33 /// The main entry point for the 'convert-for-testing' subcommand. 34 int convertForTestingMain(int argc, const char *argv[]); 35 36 /// The main entry point for the gcov compatible coverage tool. 37 int gcovMain(int argc, const char *argv[]); 38 39 /// Top level help. 40 static int helpMain(int argc, const char *argv[]) { 41 errs() << "Usage: llvm-cov {export|gcov|report|show} [OPTION]...\n\n" 42 << "Shows code coverage information.\n\n" 43 << "Subcommands:\n" 44 << " export: Export instrprof file to structured format.\n" 45 << " gcov: Work with the gcov format.\n" 46 << " report: Summarize instrprof style coverage information.\n" 47 << " show: Annotate source files using instrprof style coverage.\n"; 48 49 return 0; 50 } 51 52 /// Top level version information. 53 static int versionMain(int argc, const char *argv[]) { 54 cl::PrintVersionMessage(); 55 return 0; 56 } 57 58 int main(int argc, const char **argv) { 59 InitLLVM X(argc, argv); 60 61 // If argv[0] is or ends with 'gcov', always be gcov compatible 62 if (sys::path::stem(argv[0]).ends_with_insensitive("gcov")) 63 return gcovMain(argc, argv); 64 65 // Check if we are invoking a specific tool command. 66 if (argc > 1) { 67 typedef int (*MainFunction)(int, const char *[]); 68 MainFunction Func = StringSwitch<MainFunction>(argv[1]) 69 .Case("convert-for-testing", convertForTestingMain) 70 .Case("export", exportMain) 71 .Case("gcov", gcovMain) 72 .Case("report", reportMain) 73 .Case("show", showMain) 74 .Cases("-h", "-help", "--help", helpMain) 75 .Cases("-version", "--version", versionMain) 76 .Default(nullptr); 77 78 if (Func) { 79 std::string Invocation = std::string(argv[0]) + " " + argv[1]; 80 argv[1] = Invocation.c_str(); 81 return Func(argc - 1, argv + 1); 82 } 83 } 84 85 if (argc > 1) { 86 if (sys::Process::StandardErrHasColors()) 87 errs().changeColor(raw_ostream::RED); 88 errs() << "Unrecognized command: " << argv[1] << ".\n\n"; 89 if (sys::Process::StandardErrHasColors()) 90 errs().resetColor(); 91 } 92 helpMain(argc, argv); 93 return 1; 94 } 95