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Diffstat (limited to 'tools/llvm-cov/gcov.cpp')
| -rw-r--r-- | tools/llvm-cov/gcov.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/tools/llvm-cov/gcov.cpp b/tools/llvm-cov/gcov.cpp new file mode 100644 index 0000000..4c9195a --- /dev/null +++ b/tools/llvm-cov/gcov.cpp @@ -0,0 +1,153 @@ +//===- gcov.cpp - GCOV compatible LLVM coverage tool ----------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// llvm-cov is a command line tools to analyze and report coverage information. +// +//===----------------------------------------------------------------------===// + +#include "llvm/ADT/SmallString.h" +#include "llvm/Support/CommandLine.h" +#include "llvm/Support/Errc.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/GCOV.h" +#include "llvm/Support/ManagedStatic.h" +#include "llvm/Support/MemoryObject.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/PrettyStackTrace.h" +#include "llvm/Support/Signals.h" +#include <system_error> +using namespace llvm; + +void reportCoverage(StringRef SourceFile, StringRef ObjectDir, + const std::string &InputGCNO, const std::string &InputGCDA, + bool DumpGCOV, const GCOVOptions &Options) { + SmallString<128> CoverageFileStem(ObjectDir); + if (CoverageFileStem.empty()) { + // If no directory was specified with -o, look next to the source file. + CoverageFileStem = sys::path::parent_path(SourceFile); + sys::path::append(CoverageFileStem, sys::path::stem(SourceFile)); + } else if (sys::fs::is_directory(ObjectDir)) + // A directory name was given. Use it and the source file name. + sys::path::append(CoverageFileStem, sys::path::stem(SourceFile)); + else + // A file was given. Ignore the source file and look next to this file. + sys::path::replace_extension(CoverageFileStem, ""); + + std::string GCNO = InputGCNO.empty() + ? std::string(CoverageFileStem.str()) + ".gcno" + : InputGCNO; + std::string GCDA = InputGCDA.empty() + ? std::string(CoverageFileStem.str()) + ".gcda" + : InputGCDA; + GCOVFile GF; + + ErrorOr<std::unique_ptr<MemoryBuffer>> GCNO_Buff = + MemoryBuffer::getFileOrSTDIN(GCNO); + if (std::error_code EC = GCNO_Buff.getError()) { + errs() << GCNO << ": " << EC.message() << "\n"; + return; + } + GCOVBuffer GCNO_GB(GCNO_Buff.get().get()); + if (!GF.readGCNO(GCNO_GB)) { + errs() << "Invalid .gcno File!\n"; + return; + } + + ErrorOr<std::unique_ptr<MemoryBuffer>> GCDA_Buff = + MemoryBuffer::getFileOrSTDIN(GCDA); + if (std::error_code EC = GCDA_Buff.getError()) { + if (EC != errc::no_such_file_or_directory) { + errs() << GCDA << ": " << EC.message() << "\n"; + return; + } + // Clear the filename to make it clear we didn't read anything. + GCDA = "-"; + } else { + GCOVBuffer GCDA_GB(GCDA_Buff.get().get()); + if (!GF.readGCDA(GCDA_GB)) { + errs() << "Invalid .gcda File!\n"; + return; + } + } + + if (DumpGCOV) + GF.dump(); + + FileInfo FI(Options); + GF.collectLineCounts(FI); + FI.print(SourceFile, GCNO, GCDA); +} + +int gcovMain(int argc, const char *argv[]) { + // Print a stack trace if we signal out. + sys::PrintStackTraceOnErrorSignal(); + PrettyStackTraceProgram X(argc, argv); + llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. + + cl::list<std::string> SourceFiles(cl::Positional, cl::OneOrMore, + cl::desc("SOURCEFILE")); + + cl::opt<bool> AllBlocks("a", cl::Grouping, cl::init(false), + cl::desc("Display all basic blocks")); + cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks)); + + cl::opt<bool> BranchProb("b", cl::Grouping, cl::init(false), + cl::desc("Display branch probabilities")); + cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb)); + + cl::opt<bool> BranchCount("c", cl::Grouping, cl::init(false), + cl::desc("Display branch counts instead " + "of percentages (requires -b)")); + cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount)); + + cl::opt<bool> LongNames("l", cl::Grouping, cl::init(false), + cl::desc("Prefix filenames with the main file")); + cl::alias LongNamesA("long-file-names", cl::aliasopt(LongNames)); + + cl::opt<bool> FuncSummary("f", cl::Grouping, cl::init(false), + cl::desc("Show coverage for each function")); + cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary)); + + cl::opt<bool> NoOutput("n", cl::Grouping, cl::init(false), + cl::desc("Do not output any .gcov files")); + cl::alias NoOutputA("no-output", cl::aliasopt(NoOutput)); + + cl::opt<std::string> ObjectDir( + "o", cl::value_desc("DIR|FILE"), cl::init(""), + cl::desc("Find objects in DIR or based on FILE's path")); + cl::alias ObjectDirA("object-directory", cl::aliasopt(ObjectDir)); + cl::alias ObjectDirB("object-file", cl::aliasopt(ObjectDir)); + + cl::opt<bool> PreservePaths("p", cl::Grouping, cl::init(false), + cl::desc("Preserve path components")); + cl::alias PreservePathsA("preserve-paths", cl::aliasopt(PreservePaths)); + + cl::opt<bool> UncondBranch("u", cl::Grouping, cl::init(false), + cl::desc("Display unconditional branch info " + "(requires -b)")); + cl::alias UncondBranchA("unconditional-branches", cl::aliasopt(UncondBranch)); + + cl::OptionCategory DebugCat("Internal and debugging options"); + cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat), + cl::desc("Dump the gcov file to stderr")); + cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""), + cl::desc("Override inferred gcno file")); + cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""), + cl::desc("Override inferred gcda file")); + + cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n"); + + GCOVOptions Options(AllBlocks, BranchProb, BranchCount, FuncSummary, + PreservePaths, UncondBranch, LongNames, NoOutput); + + for (const auto &SourceFile : SourceFiles) + reportCoverage(SourceFile, ObjectDir, InputGCNO, InputGCDA, DumpGCOV, + Options); + return 0; +} |