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llvm-project/llvm/tools/llvm-profdata/llvm-profdata.cpp

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//===- llvm-profdata.cpp - LLVM profile data tool -------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// llvm-profdata merges .profdata files.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/ProfileData/InstrProfWriter.h"
#include "llvm/ProfileData/ProfileCommon.h"
#include "llvm/ProfileData/SampleProfReader.h"
#include "llvm/ProfileData/SampleProfWriter.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Threading.h"
#include "llvm/Support/ThreadPool.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
using namespace llvm;
enum ProfileFormat {
PF_None = 0,
PF_Text,
PF_Compact_Binary,
PF_Ext_Binary,
PF_GCC,
PF_Binary
};
static void warn(Twine Message, std::string Whence = "",
std::string Hint = "") {
WithColor::warning();
if (!Whence.empty())
errs() << Whence << ": ";
errs() << Message << "\n";
if (!Hint.empty())
WithColor::note() << Hint << "\n";
}
static void exitWithError(Twine Message, std::string Whence = "",
std::string Hint = "") {
WithColor::error();
if (!Whence.empty())
errs() << Whence << ": ";
errs() << Message << "\n";
if (!Hint.empty())
WithColor::note() << Hint << "\n";
::exit(1);
}
static void exitWithError(Error E, StringRef Whence = "") {
if (E.isA<InstrProfError>()) {
handleAllErrors(std::move(E), [&](const InstrProfError &IPE) {
instrprof_error instrError = IPE.get();
StringRef Hint = "";
if (instrError == instrprof_error::unrecognized_format) {
// Hint for common error of forgetting --sample for sample profiles.
Hint = "Perhaps you forgot to use the --sample option?";
}
exitWithError(IPE.message(), std::string(Whence), std::string(Hint));
});
}
exitWithError(toString(std::move(E)), std::string(Whence));
}
static void exitWithErrorCode(std::error_code EC, StringRef Whence = "") {
exitWithError(EC.message(), std::string(Whence));
}
namespace {
enum ProfileKinds { instr, sample };
enum FailureMode { failIfAnyAreInvalid, failIfAllAreInvalid };
}
static void warnOrExitGivenError(FailureMode FailMode, std::error_code EC,
StringRef Whence = "") {
if (FailMode == failIfAnyAreInvalid)
exitWithErrorCode(EC, Whence);
else
warn(EC.message(), std::string(Whence));
}
static void handleMergeWriterError(Error E, StringRef WhenceFile = "",
StringRef WhenceFunction = "",
bool ShowHint = true) {
if (!WhenceFile.empty())
errs() << WhenceFile << ": ";
if (!WhenceFunction.empty())
errs() << WhenceFunction << ": ";
auto IPE = instrprof_error::success;
E = handleErrors(std::move(E),
[&IPE](std::unique_ptr<InstrProfError> E) -> Error {
IPE = E->get();
return Error(std::move(E));
});
errs() << toString(std::move(E)) << "\n";
if (ShowHint) {
StringRef Hint = "";
if (IPE != instrprof_error::success) {
switch (IPE) {
case instrprof_error::hash_mismatch:
case instrprof_error::count_mismatch:
case instrprof_error::value_site_count_mismatch:
Hint = "Make sure that all profile data to be merged is generated "
"from the same binary.";
break;
default:
break;
}
}
if (!Hint.empty())
errs() << Hint << "\n";
}
}
namespace {
/// A remapper from original symbol names to new symbol names based on a file
/// containing a list of mappings from old name to new name.
class SymbolRemapper {
std::unique_ptr<MemoryBuffer> File;
DenseMap<StringRef, StringRef> RemappingTable;
public:
/// Build a SymbolRemapper from a file containing a list of old/new symbols.
static std::unique_ptr<SymbolRemapper> create(StringRef InputFile) {
auto BufOrError = MemoryBuffer::getFileOrSTDIN(InputFile);
if (!BufOrError)
exitWithErrorCode(BufOrError.getError(), InputFile);
auto Remapper = std::make_unique<SymbolRemapper>();
Remapper->File = std::move(BufOrError.get());
for (line_iterator LineIt(*Remapper->File, /*SkipBlanks=*/true, '#');
!LineIt.is_at_eof(); ++LineIt) {
std::pair<StringRef, StringRef> Parts = LineIt->split(' ');
if (Parts.first.empty() || Parts.second.empty() ||
Parts.second.count(' ')) {
exitWithError("unexpected line in remapping file",
(InputFile + ":" + Twine(LineIt.line_number())).str(),
"expected 'old_symbol new_symbol'");
}
Remapper->RemappingTable.insert(Parts);
}
return Remapper;
}
/// Attempt to map the given old symbol into a new symbol.
///
/// \return The new symbol, or \p Name if no such symbol was found.
StringRef operator()(StringRef Name) {
StringRef New = RemappingTable.lookup(Name);
return New.empty() ? Name : New;
}
};
}
struct WeightedFile {
std::string Filename;
uint64_t Weight;
};
typedef SmallVector<WeightedFile, 5> WeightedFileVector;
/// Keep track of merged data and reported errors.
struct WriterContext {
std::mutex Lock;
InstrProfWriter Writer;
std::vector<std::pair<Error, std::string>> Errors;
std::mutex &ErrLock;
SmallSet<instrprof_error, 4> &WriterErrorCodes;
WriterContext(bool IsSparse, std::mutex &ErrLock,
SmallSet<instrprof_error, 4> &WriterErrorCodes)
: Lock(), Writer(IsSparse), Errors(), ErrLock(ErrLock),
WriterErrorCodes(WriterErrorCodes) {}
};
/// Computer the overlap b/w profile BaseFilename and TestFileName,
/// and store the program level result to Overlap.
static void overlapInput(const std::string &BaseFilename,
const std::string &TestFilename, WriterContext *WC,
OverlapStats &Overlap,
const OverlapFuncFilters &FuncFilter,
raw_fd_ostream &OS, bool IsCS) {
auto ReaderOrErr = InstrProfReader::create(TestFilename);
if (Error E = ReaderOrErr.takeError()) {
// Skip the empty profiles by returning sliently.
instrprof_error IPE = InstrProfError::take(std::move(E));
if (IPE != instrprof_error::empty_raw_profile)
WC->Errors.emplace_back(make_error<InstrProfError>(IPE), TestFilename);
return;
}
auto Reader = std::move(ReaderOrErr.get());
for (auto &I : *Reader) {
OverlapStats FuncOverlap(OverlapStats::FunctionLevel);
FuncOverlap.setFuncInfo(I.Name, I.Hash);
WC->Writer.overlapRecord(std::move(I), Overlap, FuncOverlap, FuncFilter);
FuncOverlap.dump(OS);
}
}
/// Load an input into a writer context.
static void loadInput(const WeightedFile &Input, SymbolRemapper *Remapper,
WriterContext *WC) {
std::unique_lock<std::mutex> CtxGuard{WC->Lock};
// Copy the filename, because llvm::ThreadPool copied the input "const
// WeightedFile &" by value, making a reference to the filename within it
// invalid outside of this packaged task.
std::string Filename = Input.Filename;
auto ReaderOrErr = InstrProfReader::create(Input.Filename);
if (Error E = ReaderOrErr.takeError()) {
// Skip the empty profiles by returning sliently.
instrprof_error IPE = InstrProfError::take(std::move(E));
if (IPE != instrprof_error::empty_raw_profile)
WC->Errors.emplace_back(make_error<InstrProfError>(IPE), Filename);
return;
}
auto Reader = std::move(ReaderOrErr.get());
bool IsIRProfile = Reader->isIRLevelProfile();
bool HasCSIRProfile = Reader->hasCSIRLevelProfile();
if (WC->Writer.setIsIRLevelProfile(IsIRProfile, HasCSIRProfile)) {
WC->Errors.emplace_back(
make_error<StringError>(
"Merge IR generated profile with Clang generated profile.",
std::error_code()),
Filename);
return;
}
for (auto &I : *Reader) {
if (Remapper)
I.Name = (*Remapper)(I.Name);
const StringRef FuncName = I.Name;
bool Reported = false;
WC->Writer.addRecord(std::move(I), Input.Weight, [&](Error E) {
if (Reported) {
consumeError(std::move(E));
return;
}
Reported = true;
// Only show hint the first time an error occurs.
instrprof_error IPE = InstrProfError::take(std::move(E));
std::unique_lock<std::mutex> ErrGuard{WC->ErrLock};
bool firstTime = WC->WriterErrorCodes.insert(IPE).second;
handleMergeWriterError(make_error<InstrProfError>(IPE), Input.Filename,
FuncName, firstTime);
});
}
if (Reader->hasError())
if (Error E = Reader->getError())
WC->Errors.emplace_back(std::move(E), Filename);
}
/// Merge the \p Src writer context into \p Dst.
static void mergeWriterContexts(WriterContext *Dst, WriterContext *Src) {
for (auto &ErrorPair : Src->Errors)
Dst->Errors.push_back(std::move(ErrorPair));
Src->Errors.clear();
Dst->Writer.mergeRecordsFromWriter(std::move(Src->Writer), [&](Error E) {
instrprof_error IPE = InstrProfError::take(std::move(E));
std::unique_lock<std::mutex> ErrGuard{Dst->ErrLock};
bool firstTime = Dst->WriterErrorCodes.insert(IPE).second;
if (firstTime)
warn(toString(make_error<InstrProfError>(IPE)));
});
}
static void mergeInstrProfile(const WeightedFileVector &Inputs,
SymbolRemapper *Remapper,
StringRef OutputFilename,
ProfileFormat OutputFormat, bool OutputSparse,
unsigned NumThreads, FailureMode FailMode) {
if (OutputFilename.compare("-") == 0)
exitWithError("Cannot write indexed profdata format to stdout.");
if (OutputFormat != PF_Binary && OutputFormat != PF_Compact_Binary &&
OutputFormat != PF_Ext_Binary && OutputFormat != PF_Text)
exitWithError("Unknown format is specified.");
std::mutex ErrorLock;
SmallSet<instrprof_error, 4> WriterErrorCodes;
// If NumThreads is not specified, auto-detect a good default.
if (NumThreads == 0)
NumThreads = std::min(hardware_concurrency().compute_thread_count(),
unsigned((Inputs.size() + 1) / 2));
// FIXME: There's a bug here, where setting NumThreads = Inputs.size() fails
// the merge_empty_profile.test because the InstrProfWriter.ProfileKind isn't
// merged, thus the emitted file ends up with a PF_Unknown kind.
// Initialize the writer contexts.
SmallVector<std::unique_ptr<WriterContext>, 4> Contexts;
for (unsigned I = 0; I < NumThreads; ++I)
Contexts.emplace_back(std::make_unique<WriterContext>(
OutputSparse, ErrorLock, WriterErrorCodes));
if (NumThreads == 1) {
for (const auto &Input : Inputs)
loadInput(Input, Remapper, Contexts[0].get());
} else {
ThreadPool Pool(hardware_concurrency(NumThreads));
// Load the inputs in parallel (N/NumThreads serial steps).
unsigned Ctx = 0;
for (const auto &Input : Inputs) {
Pool.async(loadInput, Input, Remapper, Contexts[Ctx].get());
Ctx = (Ctx + 1) % NumThreads;
}
Pool.wait();
// Merge the writer contexts together (~ lg(NumThreads) serial steps).
unsigned Mid = Contexts.size() / 2;
unsigned End = Contexts.size();
assert(Mid > 0 && "Expected more than one context");
do {
for (unsigned I = 0; I < Mid; ++I)
Pool.async(mergeWriterContexts, Contexts[I].get(),
Contexts[I + Mid].get());
Pool.wait();
if (End & 1) {
Pool.async(mergeWriterContexts, Contexts[0].get(),
Contexts[End - 1].get());
Pool.wait();
}
End = Mid;
Mid /= 2;
} while (Mid > 0);
}
// Handle deferred errors encountered during merging. If the number of errors
// is equal to the number of inputs the merge failed.
unsigned NumErrors = 0;
for (std::unique_ptr<WriterContext> &WC : Contexts) {
for (auto &ErrorPair : WC->Errors) {
++NumErrors;
warn(toString(std::move(ErrorPair.first)), ErrorPair.second);
}
}
if (NumErrors == Inputs.size() ||
(NumErrors > 0 && FailMode == failIfAnyAreInvalid))
exitWithError("No profiles could be merged.");
std::error_code EC;
raw_fd_ostream Output(OutputFilename.data(), EC, sys::fs::OF_None);
if (EC)
exitWithErrorCode(EC, OutputFilename);
InstrProfWriter &Writer = Contexts[0]->Writer;
if (OutputFormat == PF_Text) {
if (Error E = Writer.writeText(Output))
exitWithError(std::move(E));
} else {
Writer.write(Output);
}
}
/// Make a copy of the given function samples with all symbol names remapped
/// by the provided symbol remapper.
static sampleprof::FunctionSamples
remapSamples(const sampleprof::FunctionSamples &Samples,
SymbolRemapper &Remapper, sampleprof_error &Error) {
sampleprof::FunctionSamples Result;
Result.setName(Remapper(Samples.getName()));
Result.addTotalSamples(Samples.getTotalSamples());
Result.addHeadSamples(Samples.getHeadSamples());
for (const auto &BodySample : Samples.getBodySamples()) {
Result.addBodySamples(BodySample.first.LineOffset,
BodySample.first.Discriminator,
BodySample.second.getSamples());
for (const auto &Target : BodySample.second.getCallTargets()) {
Result.addCalledTargetSamples(BodySample.first.LineOffset,
BodySample.first.Discriminator,
Remapper(Target.first()), Target.second);
}
}
for (const auto &CallsiteSamples : Samples.getCallsiteSamples()) {
sampleprof::FunctionSamplesMap &Target =
Result.functionSamplesAt(CallsiteSamples.first);
for (const auto &Callsite : CallsiteSamples.second) {
sampleprof::FunctionSamples Remapped =
remapSamples(Callsite.second, Remapper, Error);
MergeResult(Error,
Target[std::string(Remapped.getName())].merge(Remapped));
}
}
return Result;
}
static sampleprof::SampleProfileFormat FormatMap[] = {
sampleprof::SPF_None,
sampleprof::SPF_Text,
sampleprof::SPF_Compact_Binary,
sampleprof::SPF_Ext_Binary,
sampleprof::SPF_GCC,
sampleprof::SPF_Binary};
static std::unique_ptr<MemoryBuffer>
getInputFileBuf(const StringRef &InputFile) {
if (InputFile == "")
return {};
auto BufOrError = MemoryBuffer::getFileOrSTDIN(InputFile);
if (!BufOrError)
exitWithErrorCode(BufOrError.getError(), InputFile);
return std::move(*BufOrError);
}
static void populateProfileSymbolList(MemoryBuffer *Buffer,
sampleprof::ProfileSymbolList &PSL) {
if (!Buffer)
return;
SmallVector<StringRef, 32> SymbolVec;
StringRef Data = Buffer->getBuffer();
Data.split(SymbolVec, '\n', /*MaxSplit=*/-1, /*KeepEmpty=*/false);
for (StringRef symbol : SymbolVec)
PSL.add(symbol);
}
static void handleExtBinaryWriter(sampleprof::SampleProfileWriter &Writer,
ProfileFormat OutputFormat,
MemoryBuffer *Buffer,
sampleprof::ProfileSymbolList &WriterList,
bool CompressAllSections, bool UseMD5,
bool GenPartialProfile) {
populateProfileSymbolList(Buffer, WriterList);
if (WriterList.size() > 0 && OutputFormat != PF_Ext_Binary)
warn("Profile Symbol list is not empty but the output format is not "
"ExtBinary format. The list will be lost in the output. ");
Writer.setProfileSymbolList(&WriterList);
if (CompressAllSections) {
if (OutputFormat != PF_Ext_Binary)
warn("-compress-all-section is ignored. Specify -extbinary to enable it");
else
Writer.setToCompressAllSections();
}
if (UseMD5) {
if (OutputFormat != PF_Ext_Binary)
warn("-use-md5 is ignored. Specify -extbinary to enable it");
else
Writer.setUseMD5();
}
if (GenPartialProfile) {
if (OutputFormat != PF_Ext_Binary)
warn("-gen-partial-profile is ignored. Specify -extbinary to enable it");
else
Writer.setPartialProfile();
}
}
static void
mergeSampleProfile(const WeightedFileVector &Inputs, SymbolRemapper *Remapper,
StringRef OutputFilename, ProfileFormat OutputFormat,
StringRef ProfileSymbolListFile, bool CompressAllSections,
bool UseMD5, bool GenPartialProfile, FailureMode FailMode) {
using namespace sampleprof;
StringMap<FunctionSamples> ProfileMap;
SmallVector<std::unique_ptr<sampleprof::SampleProfileReader>, 5> Readers;
LLVMContext Context;
sampleprof::ProfileSymbolList WriterList;
for (const auto &Input : Inputs) {
auto ReaderOrErr = SampleProfileReader::create(Input.Filename, Context);
if (std::error_code EC = ReaderOrErr.getError()) {
warnOrExitGivenError(FailMode, EC, Input.Filename);
continue;
}
// We need to keep the readers around until after all the files are
// read so that we do not lose the function names stored in each
// reader's memory. The function names are needed to write out the
// merged profile map.
Readers.push_back(std::move(ReaderOrErr.get()));
const auto Reader = Readers.back().get();
if (std::error_code EC = Reader->read()) {
warnOrExitGivenError(FailMode, EC, Input.Filename);
Readers.pop_back();
continue;
}
StringMap<FunctionSamples> &Profiles = Reader->getProfiles();
for (StringMap<FunctionSamples>::iterator I = Profiles.begin(),
E = Profiles.end();
I != E; ++I) {
sampleprof_error Result = sampleprof_error::success;
FunctionSamples Remapped =
Remapper ? remapSamples(I->second, *Remapper, Result)
: FunctionSamples();
FunctionSamples &Samples = Remapper ? Remapped : I->second;
StringRef FName = Samples.getName();
MergeResult(Result, ProfileMap[FName].merge(Samples, Input.Weight));
if (Result != sampleprof_error::success) {
std::error_code EC = make_error_code(Result);
handleMergeWriterError(errorCodeToError(EC), Input.Filename, FName);
}
}
std::unique_ptr<sampleprof::ProfileSymbolList> ReaderList =
Reader->getProfileSymbolList();
if (ReaderList)
WriterList.merge(*ReaderList);
}
auto WriterOrErr =
SampleProfileWriter::create(OutputFilename, FormatMap[OutputFormat]);
if (std::error_code EC = WriterOrErr.getError())
exitWithErrorCode(EC, OutputFilename);
auto Writer = std::move(WriterOrErr.get());
// WriterList will have StringRef refering to string in Buffer.
// Make sure Buffer lives as long as WriterList.
auto Buffer = getInputFileBuf(ProfileSymbolListFile);
handleExtBinaryWriter(*Writer, OutputFormat, Buffer.get(), WriterList,
CompressAllSections, UseMD5, GenPartialProfile);
Writer->write(ProfileMap);
}
static WeightedFile parseWeightedFile(const StringRef &WeightedFilename) {
StringRef WeightStr, FileName;
std::tie(WeightStr, FileName) = WeightedFilename.split(',');
uint64_t Weight;
if (WeightStr.getAsInteger(10, Weight) || Weight < 1)
exitWithError("Input weight must be a positive integer.");
return {std::string(FileName), Weight};
}
static void addWeightedInput(WeightedFileVector &WNI, const WeightedFile &WF) {
StringRef Filename = WF.Filename;
uint64_t Weight = WF.Weight;
// If it's STDIN just pass it on.
if (Filename == "-") {
WNI.push_back({std::string(Filename), Weight});
return;
}
llvm::sys::fs::file_status Status;
llvm::sys::fs::status(Filename, Status);
if (!llvm::sys::fs::exists(Status))
exitWithErrorCode(make_error_code(errc::no_such_file_or_directory),
Filename);
// If it's a source file, collect it.
if (llvm::sys::fs::is_regular_file(Status)) {
WNI.push_back({std::string(Filename), Weight});
return;
}
if (llvm::sys::fs::is_directory(Status)) {
std::error_code EC;
for (llvm::sys::fs::recursive_directory_iterator F(Filename, EC), E;
F != E && !EC; F.increment(EC)) {
if (llvm::sys::fs::is_regular_file(F->path())) {
addWeightedInput(WNI, {F->path(), Weight});
}
}
if (EC)
exitWithErrorCode(EC, Filename);
}
}
static void parseInputFilenamesFile(MemoryBuffer *Buffer,
WeightedFileVector &WFV) {
if (!Buffer)
return;
SmallVector<StringRef, 8> Entries;
StringRef Data = Buffer->getBuffer();
Data.split(Entries, '\n', /*MaxSplit=*/-1, /*KeepEmpty=*/false);
for (const StringRef &FileWeightEntry : Entries) {
StringRef SanitizedEntry = FileWeightEntry.trim(" \t\v\f\r");
// Skip comments.
if (SanitizedEntry.startswith("#"))
continue;
// If there's no comma, it's an unweighted profile.
else if (SanitizedEntry.find(',') == StringRef::npos)
addWeightedInput(WFV, {std::string(SanitizedEntry), 1});
else
addWeightedInput(WFV, parseWeightedFile(SanitizedEntry));
}
}
static int merge_main(int argc, const char *argv[]) {
cl::list<std::string> InputFilenames(cl::Positional,
cl::desc("<filename...>"));
cl::list<std::string> WeightedInputFilenames("weighted-input",
cl::desc("<weight>,<filename>"));
cl::opt<std::string> InputFilenamesFile(
"input-files", cl::init(""),
cl::desc("Path to file containing newline-separated "
"[<weight>,]<filename> entries"));
cl::alias InputFilenamesFileA("f", cl::desc("Alias for --input-files"),
cl::aliasopt(InputFilenamesFile));
cl::opt<bool> DumpInputFileList(
"dump-input-file-list", cl::init(false), cl::Hidden,
cl::desc("Dump the list of input files and their weights, then exit"));
cl::opt<std::string> RemappingFile("remapping-file", cl::value_desc("file"),
cl::desc("Symbol remapping file"));
cl::alias RemappingFileA("r", cl::desc("Alias for --remapping-file"),
cl::aliasopt(RemappingFile));
cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
cl::init("-"), cl::Required,
cl::desc("Output file"));
cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
cl::aliasopt(OutputFilename));
cl::opt<ProfileKinds> ProfileKind(
cl::desc("Profile kind:"), cl::init(instr),
cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
clEnumVal(sample, "Sample profile")));
cl::opt<ProfileFormat> OutputFormat(
cl::desc("Format of output profile"), cl::init(PF_Binary),
cl::values(
clEnumValN(PF_Binary, "binary", "Binary encoding (default)"),
clEnumValN(PF_Compact_Binary, "compbinary",
"Compact binary encoding"),
clEnumValN(PF_Ext_Binary, "extbinary", "Extensible binary encoding"),
clEnumValN(PF_Text, "text", "Text encoding"),
clEnumValN(PF_GCC, "gcc",
"GCC encoding (only meaningful for -sample)")));
cl::opt<FailureMode> FailureMode(
"failure-mode", cl::init(failIfAnyAreInvalid), cl::desc("Failure mode:"),
cl::values(clEnumValN(failIfAnyAreInvalid, "any",
"Fail if any profile is invalid."),
clEnumValN(failIfAllAreInvalid, "all",
"Fail only if all profiles are invalid.")));
cl::opt<bool> OutputSparse("sparse", cl::init(false),
cl::desc("Generate a sparse profile (only meaningful for -instr)"));
cl::opt<unsigned> NumThreads(
"num-threads", cl::init(0),
cl::desc("Number of merge threads to use (default: autodetect)"));
cl::alias NumThreadsA("j", cl::desc("Alias for --num-threads"),
cl::aliasopt(NumThreads));
cl::opt<std::string> ProfileSymbolListFile(
"prof-sym-list", cl::init(""),
cl::desc("Path to file containing the list of function symbols "
"used to populate profile symbol list"));
cl::opt<bool> CompressAllSections(
"compress-all-sections", cl::init(false), cl::Hidden,
cl::desc("Compress all sections when writing the profile (only "
"meaningful for -extbinary)"));
cl::opt<bool> UseMD5(
"use-md5", cl::init(false), cl::Hidden,
cl::desc("Choose to use MD5 to represent string in name table (only "
"meaningful for -extbinary)"));
cl::opt<bool> GenPartialProfile(
"gen-partial-profile", cl::init(false), cl::Hidden,
cl::desc("Generate a partial profile (only meaningful for -extbinary)"));
cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
WeightedFileVector WeightedInputs;
for (StringRef Filename : InputFilenames)
addWeightedInput(WeightedInputs, {std::string(Filename), 1});
for (StringRef WeightedFilename : WeightedInputFilenames)
addWeightedInput(WeightedInputs, parseWeightedFile(WeightedFilename));
// Make sure that the file buffer stays alive for the duration of the
// weighted input vector's lifetime.
auto Buffer = getInputFileBuf(InputFilenamesFile);
parseInputFilenamesFile(Buffer.get(), WeightedInputs);
if (WeightedInputs.empty())
exitWithError("No input files specified. See " +
sys::path::filename(argv[0]) + " -help");
if (DumpInputFileList) {
for (auto &WF : WeightedInputs)
outs() << WF.Weight << "," << WF.Filename << "\n";
return 0;
}
std::unique_ptr<SymbolRemapper> Remapper;
if (!RemappingFile.empty())
Remapper = SymbolRemapper::create(RemappingFile);
if (ProfileKind == instr)
mergeInstrProfile(WeightedInputs, Remapper.get(), OutputFilename,
OutputFormat, OutputSparse, NumThreads, FailureMode);
else
mergeSampleProfile(WeightedInputs, Remapper.get(), OutputFilename,
OutputFormat, ProfileSymbolListFile, CompressAllSections,
UseMD5, GenPartialProfile, FailureMode);
return 0;
}
/// Computer the overlap b/w profile BaseFilename and profile TestFilename.
static void overlapInstrProfile(const std::string &BaseFilename,
const std::string &TestFilename,
const OverlapFuncFilters &FuncFilter,
raw_fd_ostream &OS, bool IsCS) {
std::mutex ErrorLock;
SmallSet<instrprof_error, 4> WriterErrorCodes;
WriterContext Context(false, ErrorLock, WriterErrorCodes);
WeightedFile WeightedInput{BaseFilename, 1};
OverlapStats Overlap;
Error E = Overlap.accumulateCounts(BaseFilename, TestFilename, IsCS);
if (E)
exitWithError(std::move(E), "Error in getting profile count sums");
if (Overlap.Base.CountSum < 1.0f) {
OS << "Sum of edge counts for profile " << BaseFilename << " is 0.\n";
exit(0);
}
if (Overlap.Test.CountSum < 1.0f) {
OS << "Sum of edge counts for profile " << TestFilename << " is 0.\n";
exit(0);
}
loadInput(WeightedInput, nullptr, &Context);
overlapInput(BaseFilename, TestFilename, &Context, Overlap, FuncFilter, OS,
IsCS);
Overlap.dump(OS);
}
static int overlap_main(int argc, const char *argv[]) {
cl::opt<std::string> BaseFilename(cl::Positional, cl::Required,
cl::desc("<base profile file>"));
cl::opt<std::string> TestFilename(cl::Positional, cl::Required,
cl::desc("<test profile file>"));
cl::opt<std::string> Output("output", cl::value_desc("output"), cl::init("-"),
cl::desc("Output file"));
cl::alias OutputA("o", cl::desc("Alias for --output"), cl::aliasopt(Output));
cl::opt<bool> IsCS("cs", cl::init(false),
cl::desc("For context sensitive counts"));
cl::opt<unsigned long long> ValueCutoff(
"value-cutoff", cl::init(-1),
cl::desc(
"Function level overlap information for every function in test "
"profile with max count value greater then the parameter value"));
cl::opt<std::string> FuncNameFilter(
"function",
cl::desc("Function level overlap information for matching functions"));
cl::ParseCommandLineOptions(argc, argv, "LLVM profile data overlap tool\n");
std::error_code EC;
raw_fd_ostream OS(Output.data(), EC, sys::fs::OF_Text);
if (EC)
exitWithErrorCode(EC, Output);
overlapInstrProfile(BaseFilename, TestFilename,
OverlapFuncFilters{ValueCutoff, FuncNameFilter}, OS,
IsCS);
return 0;
}
typedef struct ValueSitesStats {
ValueSitesStats()
: TotalNumValueSites(0), TotalNumValueSitesWithValueProfile(0),
TotalNumValues(0) {}
uint64_t TotalNumValueSites;
uint64_t TotalNumValueSitesWithValueProfile;
uint64_t TotalNumValues;
std::vector<unsigned> ValueSitesHistogram;
} ValueSitesStats;
static void traverseAllValueSites(const InstrProfRecord &Func, uint32_t VK,
ValueSitesStats &Stats, raw_fd_ostream &OS,
InstrProfSymtab *Symtab) {
uint32_t NS = Func.getNumValueSites(VK);
Stats.TotalNumValueSites += NS;
for (size_t I = 0; I < NS; ++I) {
uint32_t NV = Func.getNumValueDataForSite(VK, I);
std::unique_ptr<InstrProfValueData[]> VD = Func.getValueForSite(VK, I);
Stats.TotalNumValues += NV;
if (NV) {
Stats.TotalNumValueSitesWithValueProfile++;
if (NV > Stats.ValueSitesHistogram.size())
Stats.ValueSitesHistogram.resize(NV, 0);
Stats.ValueSitesHistogram[NV - 1]++;
}
uint64_t SiteSum = 0;
for (uint32_t V = 0; V < NV; V++)
SiteSum += VD[V].Count;
if (SiteSum == 0)
SiteSum = 1;
for (uint32_t V = 0; V < NV; V++) {
OS << "\t[ " << format("%2u", I) << ", ";
if (Symtab == nullptr)
OS << format("%4" PRIu64, VD[V].Value);
else
OS << Symtab->getFuncName(VD[V].Value);
OS << ", " << format("%10" PRId64, VD[V].Count) << " ] ("
<< format("%.2f%%", (VD[V].Count * 100.0 / SiteSum)) << ")\n";
}
}
}
static void showValueSitesStats(raw_fd_ostream &OS, uint32_t VK,
ValueSitesStats &Stats) {
OS << " Total number of sites: " << Stats.TotalNumValueSites << "\n";
OS << " Total number of sites with values: "
<< Stats.TotalNumValueSitesWithValueProfile << "\n";
OS << " Total number of profiled values: " << Stats.TotalNumValues << "\n";
OS << " Value sites histogram:\n\tNumTargets, SiteCount\n";
for (unsigned I = 0; I < Stats.ValueSitesHistogram.size(); I++) {
if (Stats.ValueSitesHistogram[I] > 0)
OS << "\t" << I + 1 << ", " << Stats.ValueSitesHistogram[I] << "\n";
}
}
static int showInstrProfile(const std::string &Filename, bool ShowCounts,
uint32_t TopN, bool ShowIndirectCallTargets,
bool ShowMemOPSizes, bool ShowDetailedSummary,
std::vector<uint32_t> DetailedSummaryCutoffs,
bool ShowAllFunctions, bool ShowCS,
uint64_t ValueCutoff, bool OnlyListBelow,
const std::string &ShowFunction, bool TextFormat,
raw_fd_ostream &OS) {
auto ReaderOrErr = InstrProfReader::create(Filename);
std::vector<uint32_t> Cutoffs = std::move(DetailedSummaryCutoffs);
if (ShowDetailedSummary && Cutoffs.empty()) {
Cutoffs = {800000, 900000, 950000, 990000, 999000, 999900, 999990};
}
InstrProfSummaryBuilder Builder(std::move(Cutoffs));
if (Error E = ReaderOrErr.takeError())
exitWithError(std::move(E), Filename);
auto Reader = std::move(ReaderOrErr.get());
bool IsIRInstr = Reader->isIRLevelProfile();
size_t ShownFunctions = 0;
size_t BelowCutoffFunctions = 0;
int NumVPKind = IPVK_Last - IPVK_First + 1;
std::vector<ValueSitesStats> VPStats(NumVPKind);
auto MinCmp = [](const std::pair<std::string, uint64_t> &v1,
const std::pair<std::string, uint64_t> &v2) {
return v1.second > v2.second;
};
std::priority_queue<std::pair<std::string, uint64_t>,
std::vector<std::pair<std::string, uint64_t>>,
decltype(MinCmp)>
HottestFuncs(MinCmp);
if (!TextFormat && OnlyListBelow) {
OS << "The list of functions with the maximum counter less than "
<< ValueCutoff << ":\n";
}
// Add marker so that IR-level instrumentation round-trips properly.
if (TextFormat && IsIRInstr)
OS << ":ir\n";
for (const auto &Func : *Reader) {
if (Reader->isIRLevelProfile()) {
bool FuncIsCS = NamedInstrProfRecord::hasCSFlagInHash(Func.Hash);
if (FuncIsCS != ShowCS)
continue;
}
bool Show =
ShowAllFunctions || (!ShowFunction.empty() &&
Func.Name.find(ShowFunction) != Func.Name.npos);
bool doTextFormatDump = (Show && TextFormat);
if (doTextFormatDump) {
InstrProfSymtab &Symtab = Reader->getSymtab();
InstrProfWriter::writeRecordInText(Func.Name, Func.Hash, Func, Symtab,
OS);
continue;
}
assert(Func.Counts.size() > 0 && "function missing entry counter");
Builder.addRecord(Func);
uint64_t FuncMax = 0;
uint64_t FuncSum = 0;
for (size_t I = 0, E = Func.Counts.size(); I < E; ++I) {
FuncMax = std::max(FuncMax, Func.Counts[I]);
FuncSum += Func.Counts[I];
}
if (FuncMax < ValueCutoff) {
++BelowCutoffFunctions;
if (OnlyListBelow) {
OS << " " << Func.Name << ": (Max = " << FuncMax
<< " Sum = " << FuncSum << ")\n";
}
continue;
} else if (OnlyListBelow)
continue;
if (TopN) {
if (HottestFuncs.size() == TopN) {
if (HottestFuncs.top().second < FuncMax) {
HottestFuncs.pop();
HottestFuncs.emplace(std::make_pair(std::string(Func.Name), FuncMax));
}
} else
HottestFuncs.emplace(std::make_pair(std::string(Func.Name), FuncMax));
}
if (Show) {
if (!ShownFunctions)
OS << "Counters:\n";
++ShownFunctions;
OS << " " << Func.Name << ":\n"
<< " Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n"
<< " Counters: " << Func.Counts.size() << "\n";
if (!IsIRInstr)
OS << " Function count: " << Func.Counts[0] << "\n";
if (ShowIndirectCallTargets)
OS << " Indirect Call Site Count: "
<< Func.getNumValueSites(IPVK_IndirectCallTarget) << "\n";
uint32_t NumMemOPCalls = Func.getNumValueSites(IPVK_MemOPSize);
if (ShowMemOPSizes && NumMemOPCalls > 0)
OS << " Number of Memory Intrinsics Calls: " << NumMemOPCalls
<< "\n";
if (ShowCounts) {
OS << " Block counts: [";
size_t Start = (IsIRInstr ? 0 : 1);
for (size_t I = Start, E = Func.Counts.size(); I < E; ++I) {
OS << (I == Start ? "" : ", ") << Func.Counts[I];
}
OS << "]\n";
}
if (ShowIndirectCallTargets) {
OS << " Indirect Target Results:\n";
traverseAllValueSites(Func, IPVK_IndirectCallTarget,
VPStats[IPVK_IndirectCallTarget], OS,
&(Reader->getSymtab()));
}
if (ShowMemOPSizes && NumMemOPCalls > 0) {
OS << " Memory Intrinsic Size Results:\n";
traverseAllValueSites(Func, IPVK_MemOPSize, VPStats[IPVK_MemOPSize], OS,
nullptr);
}
}
}
if (Reader->hasError())
exitWithError(Reader->getError(), Filename);
if (TextFormat)
return 0;
std::unique_ptr<ProfileSummary> PS(Builder.getSummary());
OS << "Instrumentation level: "
<< (Reader->isIRLevelProfile() ? "IR" : "Front-end") << "\n";
if (ShowAllFunctions || !ShowFunction.empty())
OS << "Functions shown: " << ShownFunctions << "\n";
OS << "Total functions: " << PS->getNumFunctions() << "\n";
if (ValueCutoff > 0) {
OS << "Number of functions with maximum count (< " << ValueCutoff
<< "): " << BelowCutoffFunctions << "\n";
OS << "Number of functions with maximum count (>= " << ValueCutoff
<< "): " << PS->getNumFunctions() - BelowCutoffFunctions << "\n";
}
OS << "Maximum function count: " << PS->getMaxFunctionCount() << "\n";
OS << "Maximum internal block count: " << PS->getMaxInternalCount() << "\n";
if (TopN) {
std::vector<std::pair<std::string, uint64_t>> SortedHottestFuncs;
while (!HottestFuncs.empty()) {
SortedHottestFuncs.emplace_back(HottestFuncs.top());
HottestFuncs.pop();
}
OS << "Top " << TopN
<< " functions with the largest internal block counts: \n";
for (auto &hotfunc : llvm::reverse(SortedHottestFuncs))
OS << " " << hotfunc.first << ", max count = " << hotfunc.second << "\n";
}
if (ShownFunctions && ShowIndirectCallTargets) {
OS << "Statistics for indirect call sites profile:\n";
showValueSitesStats(OS, IPVK_IndirectCallTarget,
VPStats[IPVK_IndirectCallTarget]);
}
if (ShownFunctions && ShowMemOPSizes) {
OS << "Statistics for memory intrinsic calls sizes profile:\n";
showValueSitesStats(OS, IPVK_MemOPSize, VPStats[IPVK_MemOPSize]);
}
if (ShowDetailedSummary) {
OS << "Total number of blocks: " << PS->getNumCounts() << "\n";
OS << "Total count: " << PS->getTotalCount() << "\n";
PS->printDetailedSummary(OS);
}
return 0;
}
static void showSectionInfo(sampleprof::SampleProfileReader *Reader,
raw_fd_ostream &OS) {
if (!Reader->dumpSectionInfo(OS)) {
WithColor::warning() << "-show-sec-info-only is only supported for "
<< "sample profile in extbinary format and is "
<< "ignored for other formats.\n";
return;
}
}
static int showSampleProfile(const std::string &Filename, bool ShowCounts,
bool ShowAllFunctions, bool ShowDetailedSummary,
const std::string &ShowFunction,
bool ShowProfileSymbolList,
bool ShowSectionInfoOnly, raw_fd_ostream &OS) {
using namespace sampleprof;
LLVMContext Context;
auto ReaderOrErr = SampleProfileReader::create(Filename, Context);
if (std::error_code EC = ReaderOrErr.getError())
exitWithErrorCode(EC, Filename);
auto Reader = std::move(ReaderOrErr.get());
if (ShowSectionInfoOnly) {
showSectionInfo(Reader.get(), OS);
return 0;
}
if (std::error_code EC = Reader->read())
exitWithErrorCode(EC, Filename);
if (ShowAllFunctions || ShowFunction.empty())
Reader->dump(OS);
else
Reader->dumpFunctionProfile(ShowFunction, OS);
if (ShowProfileSymbolList) {
std::unique_ptr<sampleprof::ProfileSymbolList> ReaderList =
Reader->getProfileSymbolList();
ReaderList->dump(OS);
}
if (ShowDetailedSummary) {
auto &PS = Reader->getSummary();
PS.printSummary(OS);
PS.printDetailedSummary(OS);
}
return 0;
}
static int show_main(int argc, const char *argv[]) {
cl::opt<std::string> Filename(cl::Positional, cl::Required,
cl::desc("<profdata-file>"));
cl::opt<bool> ShowCounts("counts", cl::init(false),
cl::desc("Show counter values for shown functions"));
cl::opt<bool> TextFormat(
"text", cl::init(false),
cl::desc("Show instr profile data in text dump format"));
cl::opt<bool> ShowIndirectCallTargets(
"ic-targets", cl::init(false),
cl::desc("Show indirect call site target values for shown functions"));
cl::opt<bool> ShowMemOPSizes(
"memop-sizes", cl::init(false),
cl::desc("Show the profiled sizes of the memory intrinsic calls "
"for shown functions"));
cl::opt<bool> ShowDetailedSummary("detailed-summary", cl::init(false),
cl::desc("Show detailed profile summary"));
cl::list<uint32_t> DetailedSummaryCutoffs(
cl::CommaSeparated, "detailed-summary-cutoffs",
cl::desc(
"Cutoff percentages (times 10000) for generating detailed summary"),
cl::value_desc("800000,901000,999999"));
cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false),
cl::desc("Details for every function"));
cl::opt<bool> ShowCS("showcs", cl::init(false),
cl::desc("Show context sensitive counts"));
cl::opt<std::string> ShowFunction("function",
cl::desc("Details for matching functions"));
cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
cl::init("-"), cl::desc("Output file"));
cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
cl::aliasopt(OutputFilename));
cl::opt<ProfileKinds> ProfileKind(
cl::desc("Profile kind:"), cl::init(instr),
cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
clEnumVal(sample, "Sample profile")));
cl::opt<uint32_t> TopNFunctions(
"topn", cl::init(0),
cl::desc("Show the list of functions with the largest internal counts"));
cl::opt<uint32_t> ValueCutoff(
"value-cutoff", cl::init(0),
cl::desc("Set the count value cutoff. Functions with the maximum count "
"less than this value will not be printed out. (Default is 0)"));
cl::opt<bool> OnlyListBelow(
"list-below-cutoff", cl::init(false),
cl::desc("Only output names of functions whose max count values are "
"below the cutoff value"));
cl::opt<bool> ShowProfileSymbolList(
"show-prof-sym-list", cl::init(false),
cl::desc("Show profile symbol list if it exists in the profile. "));
cl::opt<bool> ShowSectionInfoOnly(
"show-sec-info-only", cl::init(false),
cl::desc("Show the information of each section in the sample profile. "
"The flag is only usable when the sample profile is in "
"extbinary format"));
cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
if (OutputFilename.empty())
OutputFilename = "-";
if (!Filename.compare(OutputFilename)) {
errs() << sys::path::filename(argv[0])
<< ": Input file name cannot be the same as the output file name!\n";
return 1;
}
std::error_code EC;
raw_fd_ostream OS(OutputFilename.data(), EC, sys::fs::OF_Text);
if (EC)
exitWithErrorCode(EC, OutputFilename);
if (ShowAllFunctions && !ShowFunction.empty())
WithColor::warning() << "-function argument ignored: showing all functions\n";
if (ProfileKind == instr)
return showInstrProfile(Filename, ShowCounts, TopNFunctions,
ShowIndirectCallTargets, ShowMemOPSizes,
ShowDetailedSummary, DetailedSummaryCutoffs,
ShowAllFunctions, ShowCS, ValueCutoff,
OnlyListBelow, ShowFunction, TextFormat, OS);
else
return showSampleProfile(Filename, ShowCounts, ShowAllFunctions,
ShowDetailedSummary, ShowFunction,
ShowProfileSymbolList, ShowSectionInfoOnly, OS);
}
int main(int argc, const char *argv[]) {
InitLLVM X(argc, argv);
StringRef ProgName(sys::path::filename(argv[0]));
if (argc > 1) {
int (*func)(int, const char *[]) = nullptr;
if (strcmp(argv[1], "merge") == 0)
func = merge_main;
else if (strcmp(argv[1], "show") == 0)
func = show_main;
else if (strcmp(argv[1], "overlap") == 0)
func = overlap_main;
if (func) {
std::string Invocation(ProgName.str() + " " + argv[1]);
argv[1] = Invocation.c_str();
return func(argc - 1, argv + 1);
}
if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "-help") == 0 ||
strcmp(argv[1], "--help") == 0) {
errs() << "OVERVIEW: LLVM profile data tools\n\n"
<< "USAGE: " << ProgName << " <command> [args...]\n"
<< "USAGE: " << ProgName << " <command> -help\n\n"
<< "See each individual command --help for more details.\n"
<< "Available commands: merge, show, overlap\n";
return 0;
}
}
if (argc < 2)
errs() << ProgName << ": No command specified!\n";
else
errs() << ProgName << ": Unknown command!\n";
errs() << "USAGE: " << ProgName << " <merge|show|overlap> [args...]\n";
return 1;
}
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