forked from OSchip/llvm-project
194 lines
6.6 KiB
C++
194 lines
6.6 KiB
C++
//===- llvm-profdata.cpp - LLVM profile data tool -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// llvm-profdata merges .profdata files.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ProfileData/InstrProfReader.h"
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#include "llvm/ProfileData/InstrProfWriter.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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static void exitWithError(const Twine &Message, StringRef Whence = "") {
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errs() << "error: ";
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if (!Whence.empty())
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errs() << Whence << ": ";
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errs() << Message << "\n";
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::exit(1);
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}
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int merge_main(int argc, const char *argv[]) {
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cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore,
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cl::desc("<filenames...>"));
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cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
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cl::init("-"),
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cl::desc("Output file"));
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cl::alias OutputFilenameA("o", cl::desc("Alias for --output"), cl::Required,
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cl::aliasopt(OutputFilename));
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cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
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if (OutputFilename.compare("-") == 0)
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exitWithError("Cannot write indexed profdata format to stdout.");
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std::string ErrorInfo;
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raw_fd_ostream Output(OutputFilename.data(), ErrorInfo, sys::fs::F_None);
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if (!ErrorInfo.empty())
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exitWithError(ErrorInfo, OutputFilename);
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InstrProfWriter Writer;
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for (const auto &Filename : Inputs) {
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std::unique_ptr<InstrProfReader> Reader;
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if (std::error_code ec = InstrProfReader::create(Filename, Reader))
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exitWithError(ec.message(), Filename);
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for (const auto &I : *Reader)
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if (std::error_code EC =
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Writer.addFunctionCounts(I.Name, I.Hash, I.Counts))
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errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n";
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if (Reader->hasError())
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exitWithError(Reader->getError().message(), Filename);
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}
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Writer.write(Output);
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return 0;
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}
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int show_main(int argc, const char *argv[]) {
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cl::opt<std::string> Filename(cl::Positional, cl::Required,
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cl::desc("<profdata-file>"));
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cl::opt<bool> ShowCounts("counts", cl::init(false),
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cl::desc("Show counter values for shown functions"));
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cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false),
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cl::desc("Details for every function"));
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cl::opt<std::string> ShowFunction("function",
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cl::desc("Details for matching functions"));
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cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
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cl::init("-"),
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cl::desc("Output file"));
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cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
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cl::aliasopt(OutputFilename));
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cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
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std::unique_ptr<InstrProfReader> Reader;
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if (std::error_code EC = InstrProfReader::create(Filename, Reader))
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exitWithError(EC.message(), Filename);
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if (OutputFilename.empty())
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OutputFilename = "-";
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std::string ErrorInfo;
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raw_fd_ostream OS(OutputFilename.data(), ErrorInfo, sys::fs::F_Text);
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if (!ErrorInfo.empty())
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exitWithError(ErrorInfo, OutputFilename);
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if (ShowAllFunctions && !ShowFunction.empty())
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errs() << "warning: -function argument ignored: showing all functions\n";
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uint64_t MaxFunctionCount = 0, MaxBlockCount = 0;
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size_t ShownFunctions = 0, TotalFunctions = 0;
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for (const auto &Func : *Reader) {
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bool Show = ShowAllFunctions ||
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(!ShowFunction.empty() &&
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Func.Name.find(ShowFunction) != Func.Name.npos);
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++TotalFunctions;
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assert(Func.Counts.size() > 0 && "function missing entry counter");
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if (Func.Counts[0] > MaxFunctionCount)
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MaxFunctionCount = Func.Counts[0];
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if (Show) {
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if (!ShownFunctions)
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OS << "Counters:\n";
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++ShownFunctions;
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OS << " " << Func.Name << ":\n"
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<< " Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n"
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<< " Counters: " << Func.Counts.size() << "\n"
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<< " Function count: " << Func.Counts[0] << "\n";
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}
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if (Show && ShowCounts)
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OS << " Block counts: [";
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for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) {
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if (Func.Counts[I] > MaxBlockCount)
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MaxBlockCount = Func.Counts[I];
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if (Show && ShowCounts)
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OS << (I == 1 ? "" : ", ") << Func.Counts[I];
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}
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if (Show && ShowCounts)
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OS << "]\n";
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}
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if (Reader->hasError())
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exitWithError(Reader->getError().message(), Filename);
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if (ShowAllFunctions || !ShowFunction.empty())
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OS << "Functions shown: " << ShownFunctions << "\n";
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OS << "Total functions: " << TotalFunctions << "\n";
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OS << "Maximum function count: " << MaxFunctionCount << "\n";
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OS << "Maximum internal block count: " << MaxBlockCount << "\n";
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return 0;
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}
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int main(int argc, const char *argv[]) {
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// Print a stack trace if we signal out.
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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StringRef ProgName(sys::path::filename(argv[0]));
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if (argc > 1) {
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int (*func)(int, const char *[]) = nullptr;
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if (strcmp(argv[1], "merge") == 0)
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func = merge_main;
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else if (strcmp(argv[1], "show") == 0)
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func = show_main;
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if (func) {
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std::string Invocation(ProgName.str() + " " + argv[1]);
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argv[1] = Invocation.c_str();
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return func(argc - 1, argv + 1);
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}
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if (strcmp(argv[1], "-h") == 0 ||
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strcmp(argv[1], "-help") == 0 ||
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strcmp(argv[1], "--help") == 0) {
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errs() << "OVERVIEW: LLVM profile data tools\n\n"
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<< "USAGE: " << ProgName << " <command> [args...]\n"
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<< "USAGE: " << ProgName << " <command> -help\n\n"
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<< "Available commands: merge, show\n";
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return 0;
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}
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}
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if (argc < 2)
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errs() << ProgName << ": No command specified!\n";
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else
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errs() << ProgName << ": Unknown command!\n";
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errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n";
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return 1;
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}
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