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1 //===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // llvm-cov is a command line tools to analyze and report coverage information.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/ADT/StringRef.h"
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15 #include "llvm/ADT/StringSwitch.h"
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16 #include "llvm/Support/CommandLine.h"
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17 #include "llvm/Support/Path.h"
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18 #include "llvm/Support/Process.h"
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19 #include "llvm/Support/raw_ostream.h"
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20 #include <string>
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21
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22 using namespace llvm;
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23
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24 /// \brief The main entry point for the 'show' subcommand.
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25 int showMain(int argc, const char *argv[]);
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26
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27 /// \brief The main entry point for the 'report' subcommand.
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28 int reportMain(int argc, const char *argv[]);
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29
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30 /// \brief The main entry point for the 'convert-for-testing' subcommand.
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31 int convertForTestingMain(int argc, const char *argv[]);
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32
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33 /// \brief The main entry point for the gcov compatible coverage tool.
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34 int gcovMain(int argc, const char *argv[]);
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35
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36 /// \brief Top level help.
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37 static int helpMain(int argc, const char *argv[]) {
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38 errs() << "Usage: llvm-cov {gcov|report|show} [OPTION]...\n\n"
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39 << "Shows code coverage information.\n\n"
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40 << "Subcommands:\n"
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41 << " gcov: Work with the gcov format.\n"
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42 << " show: Annotate source files using instrprof style coverage.\n"
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43 << " report: Summarize instrprof style coverage information.\n";
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44 return 0;
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45 }
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46
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47 /// \brief Top level version information.
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48 static int versionMain(int argc, const char *argv[]) {
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49 cl::PrintVersionMessage();
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50 return 0;
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51 }
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52
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53 int main(int argc, const char **argv) {
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54 // If argv[0] is or ends with 'gcov', always be gcov compatible
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55 if (sys::path::stem(argv[0]).endswith_lower("gcov"))
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56 return gcovMain(argc, argv);
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57
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58 // Check if we are invoking a specific tool command.
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59 if (argc > 1) {
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60 typedef int (*MainFunction)(int, const char *[]);
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61 MainFunction Func = StringSwitch<MainFunction>(argv[1])
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62 .Case("convert-for-testing", convertForTestingMain)
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63 .Case("gcov", gcovMain)
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64 .Case("report", reportMain)
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65 .Case("show", showMain)
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66 .Cases("-h", "-help", "--help", helpMain)
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67 .Cases("-version", "--version", versionMain)
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68 .Default(nullptr);
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69
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70 if (Func) {
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71 std::string Invocation = std::string(argv[0]) + " " + argv[1];
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72 argv[1] = Invocation.c_str();
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73 return Func(argc - 1, argv + 1);
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74 }
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75 }
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76
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77 if (argc > 1) {
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78 if (sys::Process::StandardErrHasColors())
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79 errs().changeColor(raw_ostream::RED);
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80 errs() << "Unrecognized command: " << argv[1] << ".\n\n";
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81 if (sys::Process::StandardErrHasColors())
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82 errs().resetColor();
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83 }
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84 helpMain(argc, argv);
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85 return 1;
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86 }
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