1 //===- gcov.cpp - GCOV compatible LLVM coverage tool ----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // llvm-cov is a command line tools to analyze and report coverage information.
12 //===----------------------------------------------------------------------===//
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/Path.h"
21 #include "llvm/Support/PrettyStackTrace.h"
22 #include "llvm/Support/Signals.h"
23 #include <system_error>
26 void reportCoverage(StringRef SourceFile, StringRef ObjectDir,
27 const std::string &InputGCNO, const std::string &InputGCDA,
28 bool DumpGCOV, const GCOVOptions &Options) {
29 SmallString<128> CoverageFileStem(ObjectDir);
30 if (CoverageFileStem.empty()) {
31 // If no directory was specified with -o, look next to the source file.
32 CoverageFileStem = sys::path::parent_path(SourceFile);
33 sys::path::append(CoverageFileStem, sys::path::stem(SourceFile));
34 } else if (sys::fs::is_directory(ObjectDir))
35 // A directory name was given. Use it and the source file name.
36 sys::path::append(CoverageFileStem, sys::path::stem(SourceFile));
38 // A file was given. Ignore the source file and look next to this file.
39 sys::path::replace_extension(CoverageFileStem, "");
41 std::string GCNO = InputGCNO.empty()
42 ? std::string(CoverageFileStem.str()) + ".gcno"
44 std::string GCDA = InputGCDA.empty()
45 ? std::string(CoverageFileStem.str()) + ".gcda"
49 ErrorOr<std::unique_ptr<MemoryBuffer>> GCNO_Buff =
50 MemoryBuffer::getFileOrSTDIN(GCNO);
51 if (std::error_code EC = GCNO_Buff.getError()) {
52 errs() << GCNO << ": " << EC.message() << "\n";
55 GCOVBuffer GCNO_GB(GCNO_Buff.get().get());
56 if (!GF.readGCNO(GCNO_GB)) {
57 errs() << "Invalid .gcno File!\n";
61 ErrorOr<std::unique_ptr<MemoryBuffer>> GCDA_Buff =
62 MemoryBuffer::getFileOrSTDIN(GCDA);
63 if (std::error_code EC = GCDA_Buff.getError()) {
64 if (EC != errc::no_such_file_or_directory) {
65 errs() << GCDA << ": " << EC.message() << "\n";
68 // Clear the filename to make it clear we didn't read anything.
71 GCOVBuffer GCDA_GB(GCDA_Buff.get().get());
72 if (!GF.readGCDA(GCDA_GB)) {
73 errs() << "Invalid .gcda File!\n";
82 GF.collectLineCounts(FI);
83 FI.print(SourceFile, GCNO, GCDA);
86 int gcovMain(int argc, const char *argv[]) {
87 // Print a stack trace if we signal out.
88 sys::PrintStackTraceOnErrorSignal();
89 PrettyStackTraceProgram X(argc, argv);
90 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
92 cl::list<std::string> SourceFiles(cl::Positional, cl::OneOrMore,
93 cl::desc("SOURCEFILE"));
95 cl::opt<bool> AllBlocks("a", cl::Grouping, cl::init(false),
96 cl::desc("Display all basic blocks"));
97 cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks));
99 cl::opt<bool> BranchProb("b", cl::Grouping, cl::init(false),
100 cl::desc("Display branch probabilities"));
101 cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb));
103 cl::opt<bool> BranchCount("c", cl::Grouping, cl::init(false),
104 cl::desc("Display branch counts instead "
105 "of percentages (requires -b)"));
106 cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount));
108 cl::opt<bool> LongNames("l", cl::Grouping, cl::init(false),
109 cl::desc("Prefix filenames with the main file"));
110 cl::alias LongNamesA("long-file-names", cl::aliasopt(LongNames));
112 cl::opt<bool> FuncSummary("f", cl::Grouping, cl::init(false),
113 cl::desc("Show coverage for each function"));
114 cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary));
116 cl::opt<bool> NoOutput("n", cl::Grouping, cl::init(false),
117 cl::desc("Do not output any .gcov files"));
118 cl::alias NoOutputA("no-output", cl::aliasopt(NoOutput));
120 cl::opt<std::string> ObjectDir(
121 "o", cl::value_desc("DIR|FILE"), cl::init(""),
122 cl::desc("Find objects in DIR or based on FILE's path"));
123 cl::alias ObjectDirA("object-directory", cl::aliasopt(ObjectDir));
124 cl::alias ObjectDirB("object-file", cl::aliasopt(ObjectDir));
126 cl::opt<bool> PreservePaths("p", cl::Grouping, cl::init(false),
127 cl::desc("Preserve path components"));
128 cl::alias PreservePathsA("preserve-paths", cl::aliasopt(PreservePaths));
130 cl::opt<bool> UncondBranch("u", cl::Grouping, cl::init(false),
131 cl::desc("Display unconditional branch info "
133 cl::alias UncondBranchA("unconditional-branches", cl::aliasopt(UncondBranch));
135 cl::OptionCategory DebugCat("Internal and debugging options");
136 cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat),
137 cl::desc("Dump the gcov file to stderr"));
138 cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""),
139 cl::desc("Override inferred gcno file"));
140 cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""),
141 cl::desc("Override inferred gcda file"));
143 cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
145 GCOVOptions Options(AllBlocks, BranchProb, BranchCount, FuncSummary,
146 PreservePaths, UncondBranch, LongNames, NoOutput);
148 for (const auto &SourceFile : SourceFiles)
149 reportCoverage(SourceFile, ObjectDir, InputGCNO, InputGCDA, DumpGCOV,