1 //===- llvm-profdata.cpp - LLVM profile data 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-profdata merges .profdata files. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/ADT/StringRef.h" 15 #include "llvm/ProfileData/InstrProfReader.h" 16 #include "llvm/ProfileData/InstrProfWriter.h" 17 #include "llvm/Support/CommandLine.h" 18 #include "llvm/Support/FileSystem.h" 19 #include "llvm/Support/Format.h" 20 #include "llvm/Support/ManagedStatic.h" 21 #include "llvm/Support/MemoryBuffer.h" 22 #include "llvm/Support/PrettyStackTrace.h" 23 #include "llvm/Support/Signals.h" 24 #include "llvm/Support/raw_ostream.h" 25 26 using namespace llvm; 27 28 static void exitWithError(const Twine &Message, StringRef Whence = "") { 29 errs() << "error: "; 30 if (!Whence.empty()) 31 errs() << Whence << ": "; 32 errs() << Message << "\n"; 33 ::exit(1); 34 } 35 36 int merge_main(int argc, const char *argv[]) { 37 cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore, 38 cl::desc("<filenames...>")); 39 40 cl::opt<std::string> OutputFilename("output", cl::value_desc("output"), 41 cl::init("-"), 42 cl::desc("Output file")); 43 cl::alias OutputFilenameA("o", cl::desc("Alias for --output"), cl::Required, 44 cl::aliasopt(OutputFilename)); 45 46 cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n"); 47 48 if (OutputFilename.compare("-") == 0) 49 exitWithError("Cannot write indexed profdata format to stdout."); 50 51 std::string ErrorInfo; 52 raw_fd_ostream Output(OutputFilename.data(), ErrorInfo, sys::fs::F_None); 53 if (!ErrorInfo.empty()) 54 exitWithError(ErrorInfo, OutputFilename); 55 56 InstrProfWriter Writer; 57 for (const auto &Filename : Inputs) { 58 std::unique_ptr<InstrProfReader> Reader; 59 if (std::error_code ec = InstrProfReader::create(Filename, Reader)) 60 exitWithError(ec.message(), Filename); 61 62 for (const auto &I : *Reader) 63 if (std::error_code EC = 64 Writer.addFunctionCounts(I.Name, I.Hash, I.Counts)) 65 errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n"; 66 if (Reader->hasError()) 67 exitWithError(Reader->getError().message(), Filename); 68 } 69 Writer.write(Output); 70 71 return 0; 72 } 73 74 int show_main(int argc, const char *argv[]) { 75 cl::opt<std::string> Filename(cl::Positional, cl::Required, 76 cl::desc("<profdata-file>")); 77 78 cl::opt<bool> ShowCounts("counts", cl::init(false), 79 cl::desc("Show counter values for shown functions")); 80 cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false), 81 cl::desc("Details for every function")); 82 cl::opt<std::string> ShowFunction("function", 83 cl::desc("Details for matching functions")); 84 85 cl::opt<std::string> OutputFilename("output", cl::value_desc("output"), 86 cl::init("-"), 87 cl::desc("Output file")); 88 cl::alias OutputFilenameA("o", cl::desc("Alias for --output"), 89 cl::aliasopt(OutputFilename)); 90 91 cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n"); 92 93 std::unique_ptr<InstrProfReader> Reader; 94 if (std::error_code EC = InstrProfReader::create(Filename, Reader)) 95 exitWithError(EC.message(), Filename); 96 97 if (OutputFilename.empty()) 98 OutputFilename = "-"; 99 100 std::string ErrorInfo; 101 raw_fd_ostream OS(OutputFilename.data(), ErrorInfo, sys::fs::F_Text); 102 if (!ErrorInfo.empty()) 103 exitWithError(ErrorInfo, OutputFilename); 104 105 if (ShowAllFunctions && !ShowFunction.empty()) 106 errs() << "warning: -function argument ignored: showing all functions\n"; 107 108 uint64_t MaxFunctionCount = 0, MaxBlockCount = 0; 109 size_t ShownFunctions = 0, TotalFunctions = 0; 110 for (const auto &Func : *Reader) { 111 bool Show = ShowAllFunctions || 112 (!ShowFunction.empty() && 113 Func.Name.find(ShowFunction) != Func.Name.npos); 114 115 ++TotalFunctions; 116 assert(Func.Counts.size() > 0 && "function missing entry counter"); 117 if (Func.Counts[0] > MaxFunctionCount) 118 MaxFunctionCount = Func.Counts[0]; 119 120 if (Show) { 121 if (!ShownFunctions) 122 OS << "Counters:\n"; 123 ++ShownFunctions; 124 125 OS << " " << Func.Name << ":\n" 126 << " Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n" 127 << " Counters: " << Func.Counts.size() << "\n" 128 << " Function count: " << Func.Counts[0] << "\n"; 129 } 130 131 if (Show && ShowCounts) 132 OS << " Block counts: ["; 133 for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) { 134 if (Func.Counts[I] > MaxBlockCount) 135 MaxBlockCount = Func.Counts[I]; 136 if (Show && ShowCounts) 137 OS << (I == 1 ? "" : ", ") << Func.Counts[I]; 138 } 139 if (Show && ShowCounts) 140 OS << "]\n"; 141 } 142 if (Reader->hasError()) 143 exitWithError(Reader->getError().message(), Filename); 144 145 if (ShowAllFunctions || !ShowFunction.empty()) 146 OS << "Functions shown: " << ShownFunctions << "\n"; 147 OS << "Total functions: " << TotalFunctions << "\n"; 148 OS << "Maximum function count: " << MaxFunctionCount << "\n"; 149 OS << "Maximum internal block count: " << MaxBlockCount << "\n"; 150 return 0; 151 } 152 153 int main(int argc, const char *argv[]) { 154 // Print a stack trace if we signal out. 155 sys::PrintStackTraceOnErrorSignal(); 156 PrettyStackTraceProgram X(argc, argv); 157 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 158 159 StringRef ProgName(sys::path::filename(argv[0])); 160 if (argc > 1) { 161 int (*func)(int, const char *[]) = nullptr; 162 163 if (strcmp(argv[1], "merge") == 0) 164 func = merge_main; 165 else if (strcmp(argv[1], "show") == 0) 166 func = show_main; 167 168 if (func) { 169 std::string Invocation(ProgName.str() + " " + argv[1]); 170 argv[1] = Invocation.c_str(); 171 return func(argc - 1, argv + 1); 172 } 173 174 if (strcmp(argv[1], "-h") == 0 || 175 strcmp(argv[1], "-help") == 0 || 176 strcmp(argv[1], "--help") == 0) { 177 178 errs() << "OVERVIEW: LLVM profile data tools\n\n" 179 << "USAGE: " << ProgName << " <command> [args...]\n" 180 << "USAGE: " << ProgName << " <command> -help\n\n" 181 << "Available commands: merge, show\n"; 182 return 0; 183 } 184 } 185 186 if (argc < 2) 187 errs() << ProgName << ": No command specified!\n"; 188 else 189 errs() << ProgName << ": Unknown command!\n"; 190 191 errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n"; 192 return 1; 193 } 194
