1 //===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // llvm-cov is a command line tools to analyze and report coverage information. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/ADT/SmallString.h" 15 #include "llvm/Support/CommandLine.h" 16 #include "llvm/Support/Errc.h" 17 #include "llvm/Support/FileSystem.h" 18 #include "llvm/Support/GCOV.h" 19 #include "llvm/Support/ManagedStatic.h" 20 #include "llvm/Support/MemoryObject.h" 21 #include "llvm/Support/Path.h" 22 #include "llvm/Support/PrettyStackTrace.h" 23 #include "llvm/Support/Signals.h" 24 #include <system_error> 25 using namespace llvm; 26 27 static cl::opt<std::string> SourceFile(cl::Positional, cl::Required, 28 cl::desc("SOURCEFILE")); 29 30 static cl::opt<bool> AllBlocks("a", cl::Grouping, cl::init(false), 31 cl::desc("Display all basic blocks")); 32 static cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks)); 33 34 static cl::opt<bool> BranchProb("b", cl::Grouping, cl::init(false), 35 cl::desc("Display branch probabilities")); 36 static cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb)); 37 38 static cl::opt<bool> BranchCount("c", cl::Grouping, cl::init(false), 39 cl::desc("Display branch counts instead " 40 "of percentages (requires -b)")); 41 static cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount)); 42 43 static cl::opt<bool> LongNames("l", cl::Grouping, cl::init(false), 44 cl::desc("Prefix filenames with the main file")); 45 static cl::alias LongNamesA("long-file-names", cl::aliasopt(LongNames)); 46 47 static cl::opt<bool> FuncSummary("f", cl::Grouping, cl::init(false), 48 cl::desc("Show coverage for each function")); 49 static cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary)); 50 51 static cl::opt<bool> NoOutput("n", cl::Grouping, cl::init(false), 52 cl::desc("Do not output any .gcov files")); 53 static cl::alias NoOutputA("no-output", cl::aliasopt(NoOutput)); 54 55 static cl::opt<std::string> 56 ObjectDir("o", cl::value_desc("DIR|FILE"), cl::init(""), 57 cl::desc("Find objects in DIR or based on FILE's path")); 58 static cl::alias ObjectDirA("object-directory", cl::aliasopt(ObjectDir)); 59 static cl::alias ObjectDirB("object-file", cl::aliasopt(ObjectDir)); 60 61 static cl::opt<bool> PreservePaths("p", cl::Grouping, cl::init(false), 62 cl::desc("Preserve path components")); 63 static cl::alias PreservePathsA("preserve-paths", cl::aliasopt(PreservePaths)); 64 65 static cl::opt<bool> UncondBranch("u", cl::Grouping, cl::init(false), 66 cl::desc("Display unconditional branch info " 67 "(requires -b)")); 68 static cl::alias UncondBranchA("unconditional-branches", 69 cl::aliasopt(UncondBranch)); 70 71 static cl::OptionCategory DebugCat("Internal and debugging options"); 72 static cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat), 73 cl::desc("Dump the gcov file to stderr")); 74 static cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""), 75 cl::desc("Override inferred gcno file")); 76 static cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""), 77 cl::desc("Override inferred gcda file")); 78 79 //===----------------------------------------------------------------------===// 80 int main(int argc, char **argv) { 81 // Print a stack trace if we signal out. 82 sys::PrintStackTraceOnErrorSignal(); 83 PrettyStackTraceProgram X(argc, argv); 84 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 85 86 cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n"); 87 88 SmallString<128> CoverageFileStem(ObjectDir); 89 if (CoverageFileStem.empty()) { 90 // If no directory was specified with -o, look next to the source file. 91 CoverageFileStem = sys::path::parent_path(SourceFile); 92 sys::path::append(CoverageFileStem, sys::path::stem(SourceFile)); 93 } else if (sys::fs::is_directory(ObjectDir)) 94 // A directory name was given. Use it and the source file name. 95 sys::path::append(CoverageFileStem, sys::path::stem(SourceFile)); 96 else 97 // A file was given. Ignore the source file and look next to this file. 98 sys::path::replace_extension(CoverageFileStem, ""); 99 100 if (InputGCNO.empty()) 101 InputGCNO = (CoverageFileStem.str() + ".gcno").str(); 102 if (InputGCDA.empty()) 103 InputGCDA = (CoverageFileStem.str() + ".gcda").str(); 104 105 GCOVFile GF; 106 107 std::unique_ptr<MemoryBuffer> GCNO_Buff; 108 if (std::error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCNO, GCNO_Buff)) { 109 errs() << InputGCNO << ": " << ec.message() << "\n"; 110 return 1; 111 } 112 GCOVBuffer GCNO_GB(GCNO_Buff.get()); 113 if (!GF.readGCNO(GCNO_GB)) { 114 errs() << "Invalid .gcno File!\n"; 115 return 1; 116 } 117 118 std::unique_ptr<MemoryBuffer> GCDA_Buff; 119 if (std::error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCDA, GCDA_Buff)) { 120 if (ec != errc::no_such_file_or_directory) { 121 errs() << InputGCDA << ": " << ec.message() << "\n"; 122 return 1; 123 } 124 // Clear the filename to make it clear we didn't read anything. 125 InputGCDA = "-"; 126 } else { 127 GCOVBuffer GCDA_GB(GCDA_Buff.get()); 128 if (!GF.readGCDA(GCDA_GB)) { 129 errs() << "Invalid .gcda File!\n"; 130 return 1; 131 } 132 } 133 134 if (DumpGCOV) 135 GF.dump(); 136 137 GCOVOptions Options(AllBlocks, BranchProb, BranchCount, FuncSummary, 138 PreservePaths, UncondBranch, LongNames, NoOutput); 139 FileInfo FI(Options); 140 GF.collectLineCounts(FI); 141 FI.print(SourceFile, InputGCNO, InputGCDA); 142 return 0; 143 } 144