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Diffstat (limited to 'tools/llvm-profdata/llvm-profdata.cpp')
| -rw-r--r-- | tools/llvm-profdata/llvm-profdata.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/tools/llvm-profdata/llvm-profdata.cpp b/tools/llvm-profdata/llvm-profdata.cpp new file mode 100644 index 0000000..397b523 --- /dev/null +++ b/tools/llvm-profdata/llvm-profdata.cpp @@ -0,0 +1,191 @@ +//===- llvm-profdata.cpp - LLVM profile data tool -------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// llvm-profdata merges .profdata files. +// +//===----------------------------------------------------------------------===// + +#include "llvm/ADT/StringRef.h" +#include "llvm/ProfileData/InstrProfReader.h" +#include "llvm/ProfileData/InstrProfWriter.h" +#include "llvm/Support/CommandLine.h" +#include "llvm/Support/Format.h" +#include "llvm/Support/ManagedStatic.h" +#include "llvm/Support/MemoryBuffer.h" +#include "llvm/Support/PrettyStackTrace.h" +#include "llvm/Support/Signals.h" +#include "llvm/Support/raw_ostream.h" + +using namespace llvm; + +static void exitWithError(const Twine &Message, StringRef Whence = "") { + errs() << "error: "; + if (!Whence.empty()) + errs() << Whence << ": "; + errs() << Message << "\n"; + ::exit(1); +} + +int merge_main(int argc, const char *argv[]) { + cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore, + cl::desc("<filenames...>")); + + cl::opt<std::string> OutputFilename("output", cl::value_desc("output"), + cl::init("-"), + cl::desc("Output file")); + cl::alias OutputFilenameA("o", cl::desc("Alias for --output"), + cl::aliasopt(OutputFilename)); + + cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n"); + + if (OutputFilename.empty()) + OutputFilename = "-"; + + std::string ErrorInfo; + // FIXME: F_Text would be available if line_iterator could accept CRLF. + raw_fd_ostream Output(OutputFilename.data(), ErrorInfo, sys::fs::F_None); + if (!ErrorInfo.empty()) + exitWithError(ErrorInfo, OutputFilename); + + InstrProfWriter Writer; + for (const auto &Filename : Inputs) { + std::unique_ptr<InstrProfReader> Reader; + if (error_code ec = InstrProfReader::create(Filename, Reader)) + exitWithError(ec.message(), Filename); + + for (const auto &I : *Reader) + if (error_code EC = Writer.addFunctionCounts(I.Name, I.Hash, I.Counts)) + errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n"; + if (Reader->hasError()) + exitWithError(Reader->getError().message(), Filename); + } + Writer.write(Output); + + return 0; +} + +int show_main(int argc, const char *argv[]) { + cl::opt<std::string> Filename(cl::Positional, cl::Required, + cl::desc("<profdata-file>")); + + cl::opt<bool> ShowCounts("counts", cl::init(false), + cl::desc("Show counter values for shown functions")); + cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false), + cl::desc("Details for every function")); + cl::opt<std::string> ShowFunction("function", + cl::desc("Details for matching functions")); + + cl::opt<std::string> OutputFilename("output", cl::value_desc("output"), + cl::init("-"), + cl::desc("Output file")); + cl::alias OutputFilenameA("o", cl::desc("Alias for --output"), + cl::aliasopt(OutputFilename)); + + cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n"); + + std::unique_ptr<InstrProfReader> Reader; + if (error_code EC = InstrProfReader::create(Filename, Reader)) + exitWithError(EC.message(), Filename); + + if (OutputFilename.empty()) + OutputFilename = "-"; + + std::string ErrorInfo; + raw_fd_ostream OS(OutputFilename.data(), ErrorInfo, sys::fs::F_Text); + if (!ErrorInfo.empty()) + exitWithError(ErrorInfo, OutputFilename); + + if (ShowAllFunctions && !ShowFunction.empty()) + errs() << "warning: -function argument ignored: showing all functions\n"; + + uint64_t MaxFunctionCount = 0, MaxBlockCount = 0; + size_t ShownFunctions = 0, TotalFunctions = 0; + for (const auto &Func : *Reader) { + bool Show = ShowAllFunctions || + (!ShowFunction.empty() && + Func.Name.find(ShowFunction) != Func.Name.npos); + + ++TotalFunctions; + if (Func.Counts[0] > MaxFunctionCount) + MaxFunctionCount = Func.Counts[0]; + + if (Show) { + if (!ShownFunctions) + OS << "Counters:\n"; + ++ShownFunctions; + + OS << " " << Func.Name << ":\n" + << " Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n" + << " Counters: " << Func.Counts.size() << "\n" + << " Function count: " << Func.Counts[0] << "\n"; + } + + if (Show && ShowCounts) + OS << " Block counts: ["; + for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) { + if (Func.Counts[I] > MaxBlockCount) + MaxBlockCount = Func.Counts[I]; + if (Show && ShowCounts) + OS << (I == 1 ? "" : ", ") << Func.Counts[I]; + } + if (Show && ShowCounts) + OS << "]\n"; + } + if (Reader->hasError()) + exitWithError(Reader->getError().message(), Filename); + + if (ShowAllFunctions || !ShowFunction.empty()) + OS << "Functions shown: " << ShownFunctions << "\n"; + OS << "Total functions: " << TotalFunctions << "\n"; + OS << "Maximum function count: " << MaxFunctionCount << "\n"; + OS << "Maximum internal block count: " << MaxBlockCount << "\n"; + return 0; +} + +int main(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. + + StringRef ProgName(sys::path::filename(argv[0])); + if (argc > 1) { + int (*func)(int, const char *[]) = 0; + + if (strcmp(argv[1], "merge") == 0) + func = merge_main; + else if (strcmp(argv[1], "show") == 0) + func = show_main; + + if (func) { + std::string Invocation(ProgName.str() + " " + argv[1]); + argv[1] = Invocation.c_str(); + return func(argc - 1, argv + 1); + } + + if (strcmp(argv[1], "-h") == 0 || + strcmp(argv[1], "-help") == 0 || + strcmp(argv[1], "--help") == 0) { + + errs() << "OVERVIEW: LLVM profile data tools\n\n" + << "USAGE: " << ProgName << " <command> [args...]\n" + << "USAGE: " << ProgName << " <command> -help\n\n" + << "Available commands: merge, show\n"; + return 0; + } + } + + if (argc < 2) + errs() << ProgName << ": No command specified!\n"; + else + errs() << ProgName << ": Unknown command!\n"; + + errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n"; + return 1; +} |