Purge unused includes throughout libSupport.
[oota-llvm.git] / tools / llvm-profdata / llvm-profdata.cpp
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/IR/LLVMContext.h"
16 #include "llvm/ProfileData/InstrProfReader.h"
17 #include "llvm/ProfileData/InstrProfWriter.h"
18 #include "llvm/ProfileData/SampleProfReader.h"
19 #include "llvm/ProfileData/SampleProfWriter.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Support/FileSystem.h"
22 #include "llvm/Support/Format.h"
23 #include "llvm/Support/ManagedStatic.h"
24 #include "llvm/Support/MemoryBuffer.h"
25 #include "llvm/Support/Path.h"
26 #include "llvm/Support/PrettyStackTrace.h"
27 #include "llvm/Support/Signals.h"
28 #include "llvm/Support/raw_ostream.h"
29
30 using namespace llvm;
31
32 static void exitWithError(const Twine &Message, StringRef Whence = "") {
33   errs() << "error: ";
34   if (!Whence.empty())
35     errs() << Whence << ": ";
36   errs() << Message << "\n";
37   ::exit(1);
38 }
39
40 enum ProfileKinds { instr, sample };
41
42 static void mergeInstrProfile(const cl::list<std::string> &Inputs,
43                               StringRef OutputFilename) {
44   if (OutputFilename.compare("-") == 0)
45     exitWithError("Cannot write indexed profdata format to stdout.");
46
47   std::error_code EC;
48   raw_fd_ostream Output(OutputFilename.data(), EC, sys::fs::F_None);
49   if (EC)
50     exitWithError(EC.message(), OutputFilename);
51
52   InstrProfWriter Writer;
53   for (const auto &Filename : Inputs) {
54     auto ReaderOrErr = InstrProfReader::create(Filename);
55     if (std::error_code ec = ReaderOrErr.getError())
56       exitWithError(ec.message(), Filename);
57
58     auto Reader = std::move(ReaderOrErr.get());
59     for (const auto &I : *Reader)
60       if (std::error_code EC =
61               Writer.addFunctionCounts(I.Name, I.Hash, I.Counts))
62         errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n";
63     if (Reader->hasError())
64       exitWithError(Reader->getError().message(), Filename);
65   }
66   Writer.write(Output);
67 }
68
69 static void mergeSampleProfile(const cl::list<std::string> &Inputs,
70                                StringRef OutputFilename,
71                                sampleprof::SampleProfileFormat OutputFormat) {
72   using namespace sampleprof;
73   auto WriterOrErr = SampleProfileWriter::create(OutputFilename, OutputFormat);
74   if (std::error_code EC = WriterOrErr.getError())
75     exitWithError(EC.message(), OutputFilename);
76
77   auto Writer = std::move(WriterOrErr.get());
78   StringMap<FunctionSamples> ProfileMap;
79   for (const auto &Filename : Inputs) {
80     auto ReaderOrErr =
81         SampleProfileReader::create(Filename, getGlobalContext());
82     if (std::error_code EC = ReaderOrErr.getError())
83       exitWithError(EC.message(), Filename);
84
85     auto Reader = std::move(ReaderOrErr.get());
86     if (std::error_code EC = Reader->read())
87       exitWithError(EC.message(), Filename);
88
89     StringMap<FunctionSamples> &Profiles = Reader->getProfiles();
90     for (StringMap<FunctionSamples>::iterator I = Profiles.begin(),
91                                               E = Profiles.end();
92          I != E; ++I) {
93       StringRef FName = I->first();
94       FunctionSamples &Samples = I->second;
95       ProfileMap[FName].merge(Samples);
96     }
97   }
98   Writer->write(ProfileMap);
99 }
100
101 static int merge_main(int argc, const char *argv[]) {
102   cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore,
103                                cl::desc("<filenames...>"));
104
105   cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
106                                       cl::init("-"), cl::Required,
107                                       cl::desc("Output file"));
108   cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
109                             cl::aliasopt(OutputFilename));
110   cl::opt<ProfileKinds> ProfileKind(
111       cl::desc("Profile kind:"), cl::init(instr),
112       cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
113                  clEnumVal(sample, "Sample profile"), clEnumValEnd));
114
115   cl::opt<sampleprof::SampleProfileFormat> OutputFormat(
116       cl::desc("Format of output profile (only meaningful with --sample)"),
117       cl::init(sampleprof::SPF_Binary),
118       cl::values(clEnumValN(sampleprof::SPF_Binary, "binary",
119                             "Binary encoding (default)"),
120                  clEnumValN(sampleprof::SPF_Text, "text", "Text encoding"),
121                  clEnumValN(sampleprof::SPF_GCC, "gcc", "GCC encoding"),
122                  clEnumValEnd));
123
124   cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
125
126   if (ProfileKind == instr)
127     mergeInstrProfile(Inputs, OutputFilename);
128   else
129     mergeSampleProfile(Inputs, OutputFilename, OutputFormat);
130
131   return 0;
132 }
133
134 static int showInstrProfile(std::string Filename, bool ShowCounts,
135                             bool ShowAllFunctions, std::string ShowFunction,
136                             raw_fd_ostream &OS) {
137   auto ReaderOrErr = InstrProfReader::create(Filename);
138   if (std::error_code EC = ReaderOrErr.getError())
139     exitWithError(EC.message(), Filename);
140
141   auto Reader = std::move(ReaderOrErr.get());
142   uint64_t MaxFunctionCount = 0, MaxBlockCount = 0;
143   size_t ShownFunctions = 0, TotalFunctions = 0;
144   for (const auto &Func : *Reader) {
145     bool Show =
146         ShowAllFunctions || (!ShowFunction.empty() &&
147                              Func.Name.find(ShowFunction) != Func.Name.npos);
148
149     ++TotalFunctions;
150     assert(Func.Counts.size() > 0 && "function missing entry counter");
151     if (Func.Counts[0] > MaxFunctionCount)
152       MaxFunctionCount = Func.Counts[0];
153
154     if (Show) {
155       if (!ShownFunctions)
156         OS << "Counters:\n";
157       ++ShownFunctions;
158
159       OS << "  " << Func.Name << ":\n"
160          << "    Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n"
161          << "    Counters: " << Func.Counts.size() << "\n"
162          << "    Function count: " << Func.Counts[0] << "\n";
163     }
164
165     if (Show && ShowCounts)
166       OS << "    Block counts: [";
167     for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) {
168       if (Func.Counts[I] > MaxBlockCount)
169         MaxBlockCount = Func.Counts[I];
170       if (Show && ShowCounts)
171         OS << (I == 1 ? "" : ", ") << Func.Counts[I];
172     }
173     if (Show && ShowCounts)
174       OS << "]\n";
175   }
176   if (Reader->hasError())
177     exitWithError(Reader->getError().message(), Filename);
178
179   if (ShowAllFunctions || !ShowFunction.empty())
180     OS << "Functions shown: " << ShownFunctions << "\n";
181   OS << "Total functions: " << TotalFunctions << "\n";
182   OS << "Maximum function count: " << MaxFunctionCount << "\n";
183   OS << "Maximum internal block count: " << MaxBlockCount << "\n";
184   return 0;
185 }
186
187 static int showSampleProfile(std::string Filename, bool ShowCounts,
188                              bool ShowAllFunctions, std::string ShowFunction,
189                              raw_fd_ostream &OS) {
190   using namespace sampleprof;
191   auto ReaderOrErr = SampleProfileReader::create(Filename, getGlobalContext());
192   if (std::error_code EC = ReaderOrErr.getError())
193     exitWithError(EC.message(), Filename);
194
195   auto Reader = std::move(ReaderOrErr.get());
196   Reader->read();
197   if (ShowAllFunctions || ShowFunction.empty())
198     Reader->dump(OS);
199   else
200     Reader->dumpFunctionProfile(ShowFunction, OS);
201
202   return 0;
203 }
204
205 static int show_main(int argc, const char *argv[]) {
206   cl::opt<std::string> Filename(cl::Positional, cl::Required,
207                                 cl::desc("<profdata-file>"));
208
209   cl::opt<bool> ShowCounts("counts", cl::init(false),
210                            cl::desc("Show counter values for shown functions"));
211   cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false),
212                                  cl::desc("Details for every function"));
213   cl::opt<std::string> ShowFunction("function",
214                                     cl::desc("Details for matching functions"));
215
216   cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
217                                       cl::init("-"), cl::desc("Output file"));
218   cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
219                             cl::aliasopt(OutputFilename));
220   cl::opt<ProfileKinds> ProfileKind(
221       cl::desc("Profile kind:"), cl::init(instr),
222       cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
223                  clEnumVal(sample, "Sample profile"), clEnumValEnd));
224
225   cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
226
227   if (OutputFilename.empty())
228     OutputFilename = "-";
229
230   std::error_code EC;
231   raw_fd_ostream OS(OutputFilename.data(), EC, sys::fs::F_Text);
232   if (EC)
233     exitWithError(EC.message(), OutputFilename);
234
235   if (ShowAllFunctions && !ShowFunction.empty())
236     errs() << "warning: -function argument ignored: showing all functions\n";
237
238   if (ProfileKind == instr)
239     return showInstrProfile(Filename, ShowCounts, ShowAllFunctions,
240                             ShowFunction, OS);
241   else
242     return showSampleProfile(Filename, ShowCounts, ShowAllFunctions,
243                              ShowFunction, OS);
244 }
245
246 int main(int argc, const char *argv[]) {
247   // Print a stack trace if we signal out.
248   sys::PrintStackTraceOnErrorSignal();
249   PrettyStackTraceProgram X(argc, argv);
250   llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
251
252   StringRef ProgName(sys::path::filename(argv[0]));
253   if (argc > 1) {
254     int (*func)(int, const char *[]) = nullptr;
255
256     if (strcmp(argv[1], "merge") == 0)
257       func = merge_main;
258     else if (strcmp(argv[1], "show") == 0)
259       func = show_main;
260
261     if (func) {
262       std::string Invocation(ProgName.str() + " " + argv[1]);
263       argv[1] = Invocation.c_str();
264       return func(argc - 1, argv + 1);
265     }
266
267     if (strcmp(argv[1], "-h") == 0 ||
268         strcmp(argv[1], "-help") == 0 ||
269         strcmp(argv[1], "--help") == 0) {
270
271       errs() << "OVERVIEW: LLVM profile data tools\n\n"
272              << "USAGE: " << ProgName << " <command> [args...]\n"
273              << "USAGE: " << ProgName << " <command> -help\n\n"
274              << "Available commands: merge, show\n";
275       return 0;
276     }
277   }
278
279   if (argc < 2)
280     errs() << ProgName << ": No command specified!\n";
281   else
282     errs() << ProgName << ": Unknown command!\n";
283
284   errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n";
285   return 1;
286 }