RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 12:12:47 +01:00
Code Issues Projects Releases Wiki Activity
d4f3796eeb
llvm-mirror/tools/llvm-profdata/llvm-profdata.cpp
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

988 lines
35 KiB
C++
Raw Blame History

//===- 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/WithColor.h"
#include "llvm/Support/ThreadPool.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
using namespace llvm;
enum ProfileFormat {
PF_None = 0,
PF_Text,
PF_Compact_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(), Whence, Hint);
});
}
exitWithError(toString(std::move(E)), Whence);
}
static void exitWithErrorCode(std::error_code EC, StringRef Whence = "") {
exitWithError(EC.message(), Whence);
}
namespace {
enum ProfileKinds { instr, sample };
}
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 = llvm::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;
Error Err;
std::string ErrWhence;
std::mutex &ErrLock;
SmallSet<instrprof_error, 4> &WriterErrorCodes;
WriterContext(bool IsSparse, std::mutex &ErrLock,
SmallSet<instrprof_error, 4> &WriterErrorCodes)
: Lock(), Writer(IsSparse), Err(Error::success()), ErrWhence(""),
ErrLock(ErrLock), WriterErrorCodes(WriterErrorCodes) {}
};
/// Determine whether an error is fatal for profile merging.
static bool isFatalError(instrprof_error IPE) {
switch (IPE) {
default:
return true;
case instrprof_error::success:
case instrprof_error::eof:
case instrprof_error::unknown_function:
case instrprof_error::hash_mismatch:
case instrprof_error::count_mismatch:
case instrprof_error::counter_overflow:
case instrprof_error::value_site_count_mismatch:
return false;
}
}
/// 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};
// If there's a pending hard error, don't do more work.
if (WC->Err)
return;
// 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.
WC->ErrWhence = 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->Err = make_error<InstrProfError>(IPE);
return;
}
auto Reader = std::move(ReaderOrErr.get());
bool IsIRProfile = Reader->isIRLevelProfile();
if (WC->Writer.setIsIRLevelProfile(IsIRProfile)) {
WC->Err = make_error<StringError>(
"Merge IR generated profile with Clang generated profile.",
std::error_code());
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()) {
instrprof_error IPE = InstrProfError::take(std::move(E));
if (isFatalError(IPE))
WC->Err = make_error<InstrProfError>(IPE);
}
}
}
/// Merge the \p Src writer context into \p Dst.
static void mergeWriterContexts(WriterContext *Dst, WriterContext *Src) {
// If we've already seen a hard error, continuing with the merge would
// clobber it.
if (Dst->Err || Src->Err)
return;
bool Reported = false;
Dst->Writer.mergeRecordsFromWriter(std::move(Src->Writer), [&](Error E) {
if (Reported) {
consumeError(std::move(E));
return;
}
Reported = true;
Dst->Err = std::move(E);
});
}
static void mergeInstrProfile(const WeightedFileVector &Inputs,
SymbolRemapper *Remapper,
StringRef OutputFilename,
ProfileFormat OutputFormat, bool OutputSparse,
unsigned NumThreads) {
if (OutputFilename.compare("-") == 0)
exitWithError("Cannot write indexed profdata format to stdout.");
if (OutputFormat != PF_Binary && OutputFormat != PF_Compact_Binary &&
OutputFormat != PF_Text)
exitWithError("Unknown format is specified.");
std::error_code EC;
raw_fd_ostream Output(OutputFilename.data(), EC, sys::fs::F_None);
if (EC)
exitWithErrorCode(EC, OutputFilename);
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(), unsigned((Inputs.size() + 1) / 2));
// Initialize the writer contexts.
SmallVector<std::unique_ptr<WriterContext>, 4> Contexts;
for (unsigned I = 0; I < NumThreads; ++I)
Contexts.emplace_back(llvm::make_unique<WriterContext>(
OutputSparse, ErrorLock, WriterErrorCodes));
if (NumThreads == 1) {
for (const auto &Input : Inputs)
loadInput(Input, Remapper, Contexts[0].get());
} else {
ThreadPool Pool(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 hard errors encountered during merging.
for (std::unique_ptr<WriterContext> &WC : Contexts) {
if (!WC->Err)
continue;
if (!WC->Err.isA<InstrProfError>())
exitWithError(std::move(WC->Err), WC->ErrWhence);
instrprof_error IPE = InstrProfError::take(std::move(WC->Err));
if (isFatalError(IPE))
exitWithError(make_error<InstrProfError>(IPE), WC->ErrWhence);
else
warn(toString(make_error<InstrProfError>(IPE)),
WC->ErrWhence);
}
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[Remapped.getName()].merge(Remapped));
}
}
return Result;
}
static sampleprof::SampleProfileFormat FormatMap[] = {
sampleprof::SPF_None, sampleprof::SPF_Text, sampleprof::SPF_Compact_Binary,
sampleprof::SPF_GCC, sampleprof::SPF_Binary};
static void mergeSampleProfile(const WeightedFileVector &Inputs,
SymbolRemapper *Remapper,
StringRef OutputFilename,
ProfileFormat OutputFormat) {
using namespace sampleprof;
auto WriterOrErr =
SampleProfileWriter::create(OutputFilename, FormatMap[OutputFormat]);
if (std::error_code EC = WriterOrErr.getError())
exitWithErrorCode(EC, OutputFilename);
auto Writer = std::move(WriterOrErr.get());
StringMap<FunctionSamples> ProfileMap;
SmallVector<std::unique_ptr<sampleprof::SampleProfileReader>, 5> Readers;
LLVMContext Context;
for (const auto &Input : Inputs) {
auto ReaderOrErr = SampleProfileReader::create(Input.Filename, Context);
if (std::error_code EC = ReaderOrErr.getError())
exitWithErrorCode(EC, Input.Filename);
// 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())
exitWithErrorCode(EC, Input.Filename);
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);
}
}
}
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 {FileName, Weight};
}
static std::unique_ptr<MemoryBuffer>
getInputFilenamesFileBuf(const StringRef &InputFilenamesFile) {
if (InputFilenamesFile == "")
return {};
auto BufOrError = MemoryBuffer::getFileOrSTDIN(InputFilenamesFile);
if (!BufOrError)
exitWithErrorCode(BufOrError.getError(), InputFilenamesFile);
return std::move(*BufOrError);
}
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({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({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, {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_Text, "text", "Text encoding"),
clEnumValN(PF_GCC, "gcc",
"GCC encoding (only meaningful for -sample)")));
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::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
WeightedFileVector WeightedInputs;
for (StringRef Filename : InputFilenames)
addWeightedInput(WeightedInputs, {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 = getInputFilenamesFileBuf(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);
else
mergeSampleProfile(WeightedInputs, Remapper.get(), OutputFilename,
OutputFormat);
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("%4u", 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, 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) {
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 << "Detailed summary:\n";
OS << "Total number of blocks: " << PS->getNumCounts() << "\n";
OS << "Total count: " << PS->getTotalCount() << "\n";
for (auto Entry : PS->getDetailedSummary()) {
OS << Entry.NumCounts << " blocks with count >= " << Entry.MinCount
<< " account for "
<< format("%0.6g", (float)Entry.Cutoff / ProfileSummary::Scale * 100)
<< " percentage of the total counts.\n";
}
}
return 0;
}
static int showSampleProfile(const std::string &Filename, bool ShowCounts,
bool ShowAllFunctions,
const std::string &ShowFunction,
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 (std::error_code EC = Reader->read())
exitWithErrorCode(EC, Filename);
if (ShowAllFunctions || ShowFunction.empty())
Reader->dump(OS);
else
Reader->dumpFunctionProfile(ShowFunction, 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<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::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
if (OutputFilename.empty())
OutputFilename = "-";
std::error_code EC;
raw_fd_ostream OS(OutputFilename.data(), EC, sys::fs::F_Text);
if (EC)
exitWithErrorCode(EC, OutputFilename);
if (ShowAllFunctions && !ShowFunction.empty())
WithColor::warning() << "-function argument ignored: showing all functions\n";
std::vector<uint32_t> Cutoffs(DetailedSummaryCutoffs.begin(),
DetailedSummaryCutoffs.end());
if (ProfileKind == instr)
return showInstrProfile(Filename, ShowCounts, TopNFunctions,
ShowIndirectCallTargets, ShowMemOPSizes,
ShowDetailedSummary, DetailedSummaryCutoffs,
ShowAllFunctions, ValueCutoff, OnlyListBelow,
ShowFunction, TextFormat, OS);
else
return showSampleProfile(Filename, ShowCounts, ShowAllFunctions,
ShowFunction, 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;
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\n";
return 0;
}
}
if (argc < 2)
errs() << ProgName << ": No command specified!\n";
else
errs() << ProgName << ": Unknown command!\n";
errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n";
return 1;
}
Reference in New Issue View Git Blame Copy Permalink