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