1 //===- llvm-profdata.cpp - LLVM profile data tool -------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // llvm-profdata merges .profdata files.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/ADT/SmallSet.h"
15 #include "llvm/ADT/SmallVector.h"
16 #include "llvm/ADT/StringRef.h"
17 #include "llvm/IR/LLVMContext.h"
18 #include "llvm/ProfileData/InstrProfReader.h"
19 #include "llvm/ProfileData/InstrProfWriter.h"
20 #include "llvm/ProfileData/ProfileCommon.h"
21 #include "llvm/ProfileData/SampleProfReader.h"
22 #include "llvm/ProfileData/SampleProfWriter.h"
23 #include "llvm/Support/CommandLine.h"
24 #include "llvm/Support/Errc.h"
25 #include "llvm/Support/FileSystem.h"
26 #include "llvm/Support/Format.h"
27 #include "llvm/Support/ManagedStatic.h"
28 #include "llvm/Support/MemoryBuffer.h"
29 #include "llvm/Support/Path.h"
30 #include "llvm/Support/PrettyStackTrace.h"
31 #include "llvm/Support/Signals.h"
32 #include "llvm/Support/ThreadPool.h"
33 #include "llvm/Support/raw_ostream.h"
38 enum ProfileFormat { PF_None = 0, PF_Text, PF_Binary, PF_GCC };
40 static void exitWithError(const Twine &Message, StringRef Whence = "",
41 StringRef Hint = "") {
44 errs() << Whence << ": ";
45 errs() << Message << "\n";
47 errs() << Hint << "\n";
51 static void exitWithError(Error E, StringRef Whence = "") {
52 if (E.isA<InstrProfError>()) {
53 handleAllErrors(std::move(E), [&](const InstrProfError &IPE) {
54 instrprof_error instrError = IPE.get();
56 if (instrError == instrprof_error::unrecognized_format) {
57 // Hint for common error of forgetting -sample for sample profiles.
58 Hint = "Perhaps you forgot to use the -sample option?";
60 exitWithError(IPE.message(), Whence, Hint);
64 exitWithError(toString(std::move(E)), Whence);
67 static void exitWithErrorCode(std::error_code EC, StringRef Whence = "") {
68 exitWithError(EC.message(), Whence);
72 enum ProfileKinds { instr, sample };
75 static void handleMergeWriterError(Error E, StringRef WhenceFile = "",
76 StringRef WhenceFunction = "",
77 bool ShowHint = true) {
78 if (!WhenceFile.empty())
79 errs() << WhenceFile << ": ";
80 if (!WhenceFunction.empty())
81 errs() << WhenceFunction << ": ";
83 auto IPE = instrprof_error::success;
84 E = handleErrors(std::move(E),
85 [&IPE](std::unique_ptr<InstrProfError> E) -> Error {
87 return Error(std::move(E));
89 errs() << toString(std::move(E)) << "\n";
93 if (IPE != instrprof_error::success) {
95 case instrprof_error::hash_mismatch:
96 case instrprof_error::count_mismatch:
97 case instrprof_error::value_site_count_mismatch:
98 Hint = "Make sure that all profile data to be merged is generated "
99 "from the same binary.";
107 errs() << Hint << "\n";
111 struct WeightedFile {
112 std::string Filename;
115 typedef SmallVector<WeightedFile, 5> WeightedFileVector;
117 /// Keep track of merged data and reported errors.
118 struct WriterContext {
120 InstrProfWriter Writer;
124 SmallSet<instrprof_error, 4> &WriterErrorCodes;
126 WriterContext(bool IsSparse, std::mutex &ErrLock,
127 SmallSet<instrprof_error, 4> &WriterErrorCodes)
128 : Lock(), Writer(IsSparse), Err(Error::success()), ErrWhence(""),
129 ErrLock(ErrLock), WriterErrorCodes(WriterErrorCodes) {}
132 /// Load an input into a writer context.
133 static void loadInput(const WeightedFile &Input, WriterContext *WC) {
134 std::unique_lock<std::mutex> CtxGuard{WC->Lock};
136 // If there's a pending hard error, don't do more work.
140 WC->ErrWhence = Input.Filename;
142 auto ReaderOrErr = InstrProfReader::create(Input.Filename);
143 if (Error E = ReaderOrErr.takeError()) {
144 // Skip the empty profiles by returning sliently.
145 instrprof_error IPE = InstrProfError::take(std::move(E));
146 if (IPE != instrprof_error::empty_raw_profile)
147 WC->Err = make_error<InstrProfError>(IPE);
151 auto Reader = std::move(ReaderOrErr.get());
152 bool IsIRProfile = Reader->isIRLevelProfile();
153 if (WC->Writer.setIsIRLevelProfile(IsIRProfile)) {
154 WC->Err = make_error<StringError>(
155 "Merge IR generated profile with Clang generated profile.",
160 for (auto &I : *Reader) {
161 const StringRef FuncName = I.Name;
162 if (Error E = WC->Writer.addRecord(std::move(I), Input.Weight)) {
163 // Only show hint the first time an error occurs.
164 instrprof_error IPE = InstrProfError::take(std::move(E));
165 std::unique_lock<std::mutex> ErrGuard{WC->ErrLock};
166 bool firstTime = WC->WriterErrorCodes.insert(IPE).second;
167 handleMergeWriterError(make_error<InstrProfError>(IPE), Input.Filename,
168 FuncName, firstTime);
171 if (Reader->hasError())
172 WC->Err = Reader->getError();
175 /// Merge the \p Src writer context into \p Dst.
176 static void mergeWriterContexts(WriterContext *Dst, WriterContext *Src) {
177 if (Error E = Dst->Writer.mergeRecordsFromWriter(std::move(Src->Writer)))
178 Dst->Err = std::move(E);
181 static void mergeInstrProfile(const WeightedFileVector &Inputs,
182 StringRef OutputFilename,
183 ProfileFormat OutputFormat, bool OutputSparse,
184 unsigned NumThreads) {
185 if (OutputFilename.compare("-") == 0)
186 exitWithError("Cannot write indexed profdata format to stdout.");
188 if (OutputFormat != PF_Binary && OutputFormat != PF_Text)
189 exitWithError("Unknown format is specified.");
192 raw_fd_ostream Output(OutputFilename.data(), EC, sys::fs::F_None);
194 exitWithErrorCode(EC, OutputFilename);
196 std::mutex ErrorLock;
197 SmallSet<instrprof_error, 4> WriterErrorCodes;
199 // If NumThreads is not specified, auto-detect a good default.
201 NumThreads = std::max(1U, std::min(std::thread::hardware_concurrency(),
202 unsigned(Inputs.size() / 2)));
204 // Initialize the writer contexts.
205 SmallVector<std::unique_ptr<WriterContext>, 4> Contexts;
206 for (unsigned I = 0; I < NumThreads; ++I)
207 Contexts.emplace_back(llvm::make_unique<WriterContext>(
208 OutputSparse, ErrorLock, WriterErrorCodes));
210 if (NumThreads == 1) {
211 for (const auto &Input : Inputs)
212 loadInput(Input, Contexts[0].get());
214 ThreadPool Pool(NumThreads);
216 // Load the inputs in parallel (N/NumThreads serial steps).
218 for (const auto &Input : Inputs) {
219 Pool.async(loadInput, Input, Contexts[Ctx].get());
220 Ctx = (Ctx + 1) % NumThreads;
224 // Merge the writer contexts together (~ lg(NumThreads) serial steps).
225 unsigned Mid = Contexts.size() / 2;
226 unsigned End = Contexts.size();
227 assert(Mid > 0 && "Expected more than one context");
229 for (unsigned I = 0; I < Mid; ++I)
230 Pool.async(mergeWriterContexts, Contexts[I].get(),
231 Contexts[I + Mid].get());
234 Pool.async(mergeWriterContexts, Contexts[0].get(),
235 Contexts[End - 1].get());
243 // Handle deferred hard errors encountered during merging.
244 for (std::unique_ptr<WriterContext> &WC : Contexts)
246 exitWithError(std::move(WC->Err), WC->ErrWhence);
248 InstrProfWriter &Writer = Contexts[0]->Writer;
249 if (OutputFormat == PF_Text)
250 Writer.writeText(Output);
252 Writer.write(Output);
255 static sampleprof::SampleProfileFormat FormatMap[] = {
256 sampleprof::SPF_None, sampleprof::SPF_Text, sampleprof::SPF_Binary,
257 sampleprof::SPF_GCC};
259 static void mergeSampleProfile(const WeightedFileVector &Inputs,
260 StringRef OutputFilename,
261 ProfileFormat OutputFormat) {
262 using namespace sampleprof;
264 SampleProfileWriter::create(OutputFilename, FormatMap[OutputFormat]);
265 if (std::error_code EC = WriterOrErr.getError())
266 exitWithErrorCode(EC, OutputFilename);
268 auto Writer = std::move(WriterOrErr.get());
269 StringMap<FunctionSamples> ProfileMap;
270 SmallVector<std::unique_ptr<sampleprof::SampleProfileReader>, 5> Readers;
272 for (const auto &Input : Inputs) {
273 auto ReaderOrErr = SampleProfileReader::create(Input.Filename, Context);
274 if (std::error_code EC = ReaderOrErr.getError())
275 exitWithErrorCode(EC, Input.Filename);
277 // We need to keep the readers around until after all the files are
278 // read so that we do not lose the function names stored in each
279 // reader's memory. The function names are needed to write out the
280 // merged profile map.
281 Readers.push_back(std::move(ReaderOrErr.get()));
282 const auto Reader = Readers.back().get();
283 if (std::error_code EC = Reader->read())
284 exitWithErrorCode(EC, Input.Filename);
286 StringMap<FunctionSamples> &Profiles = Reader->getProfiles();
287 for (StringMap<FunctionSamples>::iterator I = Profiles.begin(),
290 StringRef FName = I->first();
291 FunctionSamples &Samples = I->second;
292 sampleprof_error Result = ProfileMap[FName].merge(Samples, Input.Weight);
293 if (Result != sampleprof_error::success) {
294 std::error_code EC = make_error_code(Result);
295 handleMergeWriterError(errorCodeToError(EC), Input.Filename, FName);
299 Writer->write(ProfileMap);
302 static WeightedFile parseWeightedFile(const StringRef &WeightedFilename) {
303 StringRef WeightStr, FileName;
304 std::tie(WeightStr, FileName) = WeightedFilename.split(',');
307 if (WeightStr.getAsInteger(10, Weight) || Weight < 1)
308 exitWithError("Input weight must be a positive integer.");
310 return {FileName, Weight};
313 static std::unique_ptr<MemoryBuffer>
314 getInputFilenamesFileBuf(const StringRef &InputFilenamesFile) {
315 if (InputFilenamesFile == "")
318 auto BufOrError = MemoryBuffer::getFileOrSTDIN(InputFilenamesFile);
320 exitWithErrorCode(BufOrError.getError(), InputFilenamesFile);
322 return std::move(*BufOrError);
325 static void addWeightedInput(WeightedFileVector &WNI, const WeightedFile &WF) {
326 StringRef Filename = WF.Filename;
327 uint64_t Weight = WF.Weight;
329 // If it's STDIN just pass it on.
330 if (Filename == "-") {
331 WNI.push_back({Filename, Weight});
335 llvm::sys::fs::file_status Status;
336 llvm::sys::fs::status(Filename, Status);
337 if (!llvm::sys::fs::exists(Status))
338 exitWithErrorCode(make_error_code(errc::no_such_file_or_directory),
340 // If it's a source file, collect it.
341 if (llvm::sys::fs::is_regular_file(Status)) {
342 WNI.push_back({Filename, Weight});
346 if (llvm::sys::fs::is_directory(Status)) {
348 for (llvm::sys::fs::recursive_directory_iterator F(Filename, EC), E;
349 F != E && !EC; F.increment(EC)) {
350 if (llvm::sys::fs::is_regular_file(F->path())) {
351 addWeightedInput(WNI, {F->path(), Weight});
355 exitWithErrorCode(EC, Filename);
359 static void parseInputFilenamesFile(MemoryBuffer *Buffer,
360 WeightedFileVector &WFV) {
364 SmallVector<StringRef, 8> Entries;
365 StringRef Data = Buffer->getBuffer();
366 Data.split(Entries, '\n', /*MaxSplit=*/-1, /*KeepEmpty=*/false);
367 for (const StringRef &FileWeightEntry : Entries) {
368 StringRef SanitizedEntry = FileWeightEntry.trim(" \t\v\f\r");
370 if (SanitizedEntry.startswith("#"))
372 // If there's no comma, it's an unweighted profile.
373 else if (SanitizedEntry.find(',') == StringRef::npos)
374 addWeightedInput(WFV, {SanitizedEntry, 1});
376 addWeightedInput(WFV, parseWeightedFile(SanitizedEntry));
380 static int merge_main(int argc, const char *argv[]) {
381 cl::list<std::string> InputFilenames(cl::Positional,
382 cl::desc("<filename...>"));
383 cl::list<std::string> WeightedInputFilenames("weighted-input",
384 cl::desc("<weight>,<filename>"));
385 cl::opt<std::string> InputFilenamesFile(
386 "input-files", cl::init(""),
387 cl::desc("Path to file containing newline-separated "
388 "[<weight>,]<filename> entries"));
389 cl::alias InputFilenamesFileA("f", cl::desc("Alias for --input-files"),
390 cl::aliasopt(InputFilenamesFile));
391 cl::opt<bool> DumpInputFileList(
392 "dump-input-file-list", cl::init(false), cl::Hidden,
393 cl::desc("Dump the list of input files and their weights, then exit"));
394 cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
395 cl::init("-"), cl::Required,
396 cl::desc("Output file"));
397 cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
398 cl::aliasopt(OutputFilename));
399 cl::opt<ProfileKinds> ProfileKind(
400 cl::desc("Profile kind:"), cl::init(instr),
401 cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
402 clEnumVal(sample, "Sample profile")));
403 cl::opt<ProfileFormat> OutputFormat(
404 cl::desc("Format of output profile"), cl::init(PF_Binary),
405 cl::values(clEnumValN(PF_Binary, "binary", "Binary encoding (default)"),
406 clEnumValN(PF_Text, "text", "Text encoding"),
407 clEnumValN(PF_GCC, "gcc",
408 "GCC encoding (only meaningful for -sample)")));
409 cl::opt<bool> OutputSparse("sparse", cl::init(false),
410 cl::desc("Generate a sparse profile (only meaningful for -instr)"));
411 cl::opt<unsigned> NumThreads(
412 "num-threads", cl::init(0),
413 cl::desc("Number of merge threads to use (default: autodetect)"));
414 cl::alias NumThreadsA("j", cl::desc("Alias for --num-threads"),
415 cl::aliasopt(NumThreads));
417 cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
419 WeightedFileVector WeightedInputs;
420 for (StringRef Filename : InputFilenames)
421 addWeightedInput(WeightedInputs, {Filename, 1});
422 for (StringRef WeightedFilename : WeightedInputFilenames)
423 addWeightedInput(WeightedInputs, parseWeightedFile(WeightedFilename));
425 // Make sure that the file buffer stays alive for the duration of the
426 // weighted input vector's lifetime.
427 auto Buffer = getInputFilenamesFileBuf(InputFilenamesFile);
428 parseInputFilenamesFile(Buffer.get(), WeightedInputs);
430 if (WeightedInputs.empty())
431 exitWithError("No input files specified. See " +
432 sys::path::filename(argv[0]) + " -help");
434 if (DumpInputFileList) {
435 for (auto &WF : WeightedInputs)
436 outs() << WF.Weight << "," << WF.Filename << "\n";
440 if (ProfileKind == instr)
441 mergeInstrProfile(WeightedInputs, OutputFilename, OutputFormat,
442 OutputSparse, NumThreads);
444 mergeSampleProfile(WeightedInputs, OutputFilename, OutputFormat);
449 static int showInstrProfile(const std::string &Filename, bool ShowCounts,
450 bool ShowIndirectCallTargets,
451 bool ShowDetailedSummary,
452 std::vector<uint32_t> DetailedSummaryCutoffs,
453 bool ShowAllFunctions,
454 const std::string &ShowFunction, bool TextFormat,
455 raw_fd_ostream &OS) {
456 auto ReaderOrErr = InstrProfReader::create(Filename);
457 std::vector<uint32_t> Cutoffs = std::move(DetailedSummaryCutoffs);
458 if (ShowDetailedSummary && Cutoffs.empty()) {
459 Cutoffs = {800000, 900000, 950000, 990000, 999000, 999900, 999990};
461 InstrProfSummaryBuilder Builder(std::move(Cutoffs));
462 if (Error E = ReaderOrErr.takeError())
463 exitWithError(std::move(E), Filename);
465 auto Reader = std::move(ReaderOrErr.get());
466 bool IsIRInstr = Reader->isIRLevelProfile();
467 size_t ShownFunctions = 0;
468 uint64_t TotalNumValueSites = 0;
469 uint64_t TotalNumValueSitesWithValueProfile = 0;
470 uint64_t TotalNumValues = 0;
471 std::vector<unsigned> ICHistogram;
472 for (const auto &Func : *Reader) {
474 ShowAllFunctions || (!ShowFunction.empty() &&
475 Func.Name.find(ShowFunction) != Func.Name.npos);
477 bool doTextFormatDump = (Show && ShowCounts && TextFormat);
479 if (doTextFormatDump) {
480 InstrProfSymtab &Symtab = Reader->getSymtab();
481 InstrProfWriter::writeRecordInText(Func, Symtab, OS);
485 assert(Func.Counts.size() > 0 && "function missing entry counter");
486 Builder.addRecord(Func);
495 OS << " " << Func.Name << ":\n"
496 << " Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n"
497 << " Counters: " << Func.Counts.size() << "\n";
499 OS << " Function count: " << Func.Counts[0] << "\n";
501 if (ShowIndirectCallTargets)
502 OS << " Indirect Call Site Count: "
503 << Func.getNumValueSites(IPVK_IndirectCallTarget) << "\n";
506 OS << " Block counts: [";
507 size_t Start = (IsIRInstr ? 0 : 1);
508 for (size_t I = Start, E = Func.Counts.size(); I < E; ++I) {
509 OS << (I == Start ? "" : ", ") << Func.Counts[I];
514 if (ShowIndirectCallTargets) {
515 InstrProfSymtab &Symtab = Reader->getSymtab();
516 uint32_t NS = Func.getNumValueSites(IPVK_IndirectCallTarget);
517 OS << " Indirect Target Results: \n";
518 TotalNumValueSites += NS;
519 for (size_t I = 0; I < NS; ++I) {
520 uint32_t NV = Func.getNumValueDataForSite(IPVK_IndirectCallTarget, I);
521 std::unique_ptr<InstrProfValueData[]> VD =
522 Func.getValueForSite(IPVK_IndirectCallTarget, I);
523 TotalNumValues += NV;
525 TotalNumValueSitesWithValueProfile++;
526 if (NV > ICHistogram.size())
527 ICHistogram.resize(NV, 0);
528 ICHistogram[NV - 1]++;
530 for (uint32_t V = 0; V < NV; V++) {
531 OS << "\t[ " << I << ", ";
532 OS << Symtab.getFuncName(VD[V].Value) << ", " << VD[V].Count
539 if (Reader->hasError())
540 exitWithError(Reader->getError(), Filename);
542 if (ShowCounts && TextFormat)
544 std::unique_ptr<ProfileSummary> PS(Builder.getSummary());
545 if (ShowAllFunctions || !ShowFunction.empty())
546 OS << "Functions shown: " << ShownFunctions << "\n";
547 OS << "Total functions: " << PS->getNumFunctions() << "\n";
548 OS << "Maximum function count: " << PS->getMaxFunctionCount() << "\n";
549 OS << "Maximum internal block count: " << PS->getMaxInternalCount() << "\n";
550 if (ShownFunctions && ShowIndirectCallTargets) {
551 OS << "Total Number of Indirect Call Sites : " << TotalNumValueSites
553 OS << "Total Number of Sites With Values : "
554 << TotalNumValueSitesWithValueProfile << "\n";
555 OS << "Total Number of Profiled Values : " << TotalNumValues << "\n";
557 OS << "IC Value histogram : \n\tNumTargets, SiteCount\n";
558 for (unsigned I = 0; I < ICHistogram.size(); I++) {
559 OS << "\t" << I + 1 << ", " << ICHistogram[I] << "\n";
563 if (ShowDetailedSummary) {
564 OS << "Detailed summary:\n";
565 OS << "Total number of blocks: " << PS->getNumCounts() << "\n";
566 OS << "Total count: " << PS->getTotalCount() << "\n";
567 for (auto Entry : PS->getDetailedSummary()) {
568 OS << Entry.NumCounts << " blocks with count >= " << Entry.MinCount
570 << format("%0.6g", (float)Entry.Cutoff / ProfileSummary::Scale * 100)
571 << " percentage of the total counts.\n";
577 static int showSampleProfile(const std::string &Filename, bool ShowCounts,
578 bool ShowAllFunctions,
579 const std::string &ShowFunction,
580 raw_fd_ostream &OS) {
581 using namespace sampleprof;
583 auto ReaderOrErr = SampleProfileReader::create(Filename, Context);
584 if (std::error_code EC = ReaderOrErr.getError())
585 exitWithErrorCode(EC, Filename);
587 auto Reader = std::move(ReaderOrErr.get());
588 if (std::error_code EC = Reader->read())
589 exitWithErrorCode(EC, Filename);
591 if (ShowAllFunctions || ShowFunction.empty())
594 Reader->dumpFunctionProfile(ShowFunction, OS);
599 static int show_main(int argc, const char *argv[]) {
600 cl::opt<std::string> Filename(cl::Positional, cl::Required,
601 cl::desc("<profdata-file>"));
603 cl::opt<bool> ShowCounts("counts", cl::init(false),
604 cl::desc("Show counter values for shown functions"));
605 cl::opt<bool> TextFormat(
606 "text", cl::init(false),
607 cl::desc("Show instr profile data in text dump format"));
608 cl::opt<bool> ShowIndirectCallTargets(
609 "ic-targets", cl::init(false),
610 cl::desc("Show indirect call site target values for shown functions"));
611 cl::opt<bool> ShowDetailedSummary("detailed-summary", cl::init(false),
612 cl::desc("Show detailed profile summary"));
613 cl::list<uint32_t> DetailedSummaryCutoffs(
614 cl::CommaSeparated, "detailed-summary-cutoffs",
616 "Cutoff percentages (times 10000) for generating detailed summary"),
617 cl::value_desc("800000,901000,999999"));
618 cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false),
619 cl::desc("Details for every function"));
620 cl::opt<std::string> ShowFunction("function",
621 cl::desc("Details for matching functions"));
623 cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
624 cl::init("-"), cl::desc("Output file"));
625 cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
626 cl::aliasopt(OutputFilename));
627 cl::opt<ProfileKinds> ProfileKind(
628 cl::desc("Profile kind:"), cl::init(instr),
629 cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
630 clEnumVal(sample, "Sample profile")));
632 cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
634 if (OutputFilename.empty())
635 OutputFilename = "-";
638 raw_fd_ostream OS(OutputFilename.data(), EC, sys::fs::F_Text);
640 exitWithErrorCode(EC, OutputFilename);
642 if (ShowAllFunctions && !ShowFunction.empty())
643 errs() << "warning: -function argument ignored: showing all functions\n";
645 std::vector<uint32_t> Cutoffs(DetailedSummaryCutoffs.begin(),
646 DetailedSummaryCutoffs.end());
647 if (ProfileKind == instr)
648 return showInstrProfile(Filename, ShowCounts, ShowIndirectCallTargets,
649 ShowDetailedSummary, DetailedSummaryCutoffs,
650 ShowAllFunctions, ShowFunction, TextFormat, OS);
652 return showSampleProfile(Filename, ShowCounts, ShowAllFunctions,
656 int main(int argc, const char *argv[]) {
657 // Print a stack trace if we signal out.
658 sys::PrintStackTraceOnErrorSignal(argv[0]);
659 PrettyStackTraceProgram X(argc, argv);
660 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
662 StringRef ProgName(sys::path::filename(argv[0]));
664 int (*func)(int, const char *[]) = nullptr;
666 if (strcmp(argv[1], "merge") == 0)
668 else if (strcmp(argv[1], "show") == 0)
672 std::string Invocation(ProgName.str() + " " + argv[1]);
673 argv[1] = Invocation.c_str();
674 return func(argc - 1, argv + 1);
677 if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "-help") == 0 ||
678 strcmp(argv[1], "--help") == 0) {
680 errs() << "OVERVIEW: LLVM profile data tools\n\n"
681 << "USAGE: " << ProgName << " <command> [args...]\n"
682 << "USAGE: " << ProgName << " <command> -help\n\n"
683 << "See each individual command --help for more details.\n"
684 << "Available commands: merge, show\n";
690 errs() << ProgName << ": No command specified!\n";
692 errs() << ProgName << ": Unknown command!\n";
694 errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n";