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annotate tools/llvm-cov/gcov.cpp @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents 1172e4bd9c6f
children 3a76565eade5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===- gcov.cpp - GCOV compatible 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/SmallString.h"
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15 #include "llvm/Support/CommandLine.h"
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16 #include "llvm/Support/Errc.h"
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17 #include "llvm/Support/FileSystem.h"
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18 #include "llvm/Support/GCOV.h"
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19 #include "llvm/Support/Path.h"
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20 #include <system_error>
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21 using namespace llvm;
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22
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23 static void reportCoverage(StringRef SourceFile, StringRef ObjectDir,
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24 const std::string &InputGCNO,
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25 const std::string &InputGCDA, bool DumpGCOV,
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26 const GCOV::Options &Options) {
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27 SmallString<128> CoverageFileStem(ObjectDir);
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28 if (CoverageFileStem.empty()) {
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29 // If no directory was specified with -o, look next to the source file.
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30 CoverageFileStem = sys::path::parent_path(SourceFile);
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31 sys::path::append(CoverageFileStem, sys::path::stem(SourceFile));
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32 } else if (sys::fs::is_directory(ObjectDir))
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33 // A directory name was given. Use it and the source file name.
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34 sys::path::append(CoverageFileStem, sys::path::stem(SourceFile));
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35 else
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36 // A file was given. Ignore the source file and look next to this file.
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37 sys::path::replace_extension(CoverageFileStem, "");
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38
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39 std::string GCNO = InputGCNO.empty()
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40 ? std::string(CoverageFileStem.str()) + ".gcno"
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41 : InputGCNO;
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42 std::string GCDA = InputGCDA.empty()
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43 ? std::string(CoverageFileStem.str()) + ".gcda"
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44 : InputGCDA;
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45 GCOVFile GF;
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46
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47 ErrorOr<std::unique_ptr<MemoryBuffer>> GCNO_Buff =
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48 MemoryBuffer::getFileOrSTDIN(GCNO);
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49 if (std::error_code EC = GCNO_Buff.getError()) {
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50 errs() << GCNO << ": " << EC.message() << "\n";
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51 return;
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52 }
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53 GCOVBuffer GCNO_GB(GCNO_Buff.get().get());
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54 if (!GF.readGCNO(GCNO_GB)) {
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55 errs() << "Invalid .gcno File!\n";
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56 return;
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57 }
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58
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59 ErrorOr<std::unique_ptr<MemoryBuffer>> GCDA_Buff =
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60 MemoryBuffer::getFileOrSTDIN(GCDA);
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61 if (std::error_code EC = GCDA_Buff.getError()) {
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62 if (EC != errc::no_such_file_or_directory) {
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63 errs() << GCDA << ": " << EC.message() << "\n";
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64 return;
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65 }
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66 // Clear the filename to make it clear we didn't read anything.
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67 GCDA = "-";
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68 } else {
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69 GCOVBuffer GCDA_GB(GCDA_Buff.get().get());
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70 if (!GF.readGCDA(GCDA_GB)) {
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71 errs() << "Invalid .gcda File!\n";
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72 return;
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73 }
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74 }
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75
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76 if (DumpGCOV)
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77 GF.print(errs());
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78
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79 FileInfo FI(Options);
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80 GF.collectLineCounts(FI);
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81 FI.print(llvm::outs(), SourceFile, GCNO, GCDA);
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82 }
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83
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84 int gcovMain(int argc, const char *argv[]) {
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85 cl::list<std::string> SourceFiles(cl::Positional, cl::OneOrMore,
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86 cl::desc("SOURCEFILE"));
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87
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88 cl::opt<bool> AllBlocks("a", cl::Grouping, cl::init(false),
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89 cl::desc("Display all basic blocks"));
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90 cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks));
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91
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92 cl::opt<bool> BranchProb("b", cl::Grouping, cl::init(false),
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93 cl::desc("Display branch probabilities"));
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94 cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb));
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95
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96 cl::opt<bool> BranchCount("c", cl::Grouping, cl::init(false),
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97 cl::desc("Display branch counts instead "
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98 "of percentages (requires -b)"));
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99 cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount));
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100
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101 cl::opt<bool> LongNames("l", cl::Grouping, cl::init(false),
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102 cl::desc("Prefix filenames with the main file"));
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103 cl::alias LongNamesA("long-file-names", cl::aliasopt(LongNames));
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104
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105 cl::opt<bool> FuncSummary("f", cl::Grouping, cl::init(false),
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106 cl::desc("Show coverage for each function"));
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107 cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary));
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108
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109 cl::opt<bool> NoOutput("n", cl::Grouping, cl::init(false),
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110 cl::desc("Do not output any .gcov files"));
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111 cl::alias NoOutputA("no-output", cl::aliasopt(NoOutput));
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112
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113 cl::opt<std::string> ObjectDir(
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114 "o", cl::value_desc("DIR|FILE"), cl::init(""),
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115 cl::desc("Find objects in DIR or based on FILE's path"));
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116 cl::alias ObjectDirA("object-directory", cl::aliasopt(ObjectDir));
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117 cl::alias ObjectDirB("object-file", cl::aliasopt(ObjectDir));
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118
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119 cl::opt<bool> PreservePaths("p", cl::Grouping, cl::init(false),
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120 cl::desc("Preserve path components"));
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121 cl::alias PreservePathsA("preserve-paths", cl::aliasopt(PreservePaths));
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122
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123 cl::opt<bool> UncondBranch("u", cl::Grouping, cl::init(false),
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124 cl::desc("Display unconditional branch info "
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125 "(requires -b)"));
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126 cl::alias UncondBranchA("unconditional-branches", cl::aliasopt(UncondBranch));
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127
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128 cl::OptionCategory DebugCat("Internal and debugging options");
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129 cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat),
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130 cl::desc("Dump the gcov file to stderr"));
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131 cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""),
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132 cl::desc("Override inferred gcno file"));
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133 cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""),
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134 cl::desc("Override inferred gcda file"));
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135
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136 cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
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137
100
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138 GCOV::Options Options(AllBlocks, BranchProb, BranchCount, FuncSummary,
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139 PreservePaths, UncondBranch, LongNames, NoOutput);
77
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140
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141 for (const auto &SourceFile : SourceFiles)
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142 reportCoverage(SourceFile, ObjectDir, InputGCNO, InputGCDA, DumpGCOV,
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143 Options);
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144 return 0;
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145 }