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

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//===- llvm-profdata.cpp - LLVM profile data tool -------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// llvm-profdata merges .profdata files.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/ProfileData/InstrProfWriter.h"
#include "llvm/ProfileData/SampleProfReader.h"
#include "llvm/ProfileData/SampleProfWriter.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
static void exitWithError(const Twine &Message, StringRef Whence = "") {
errs() << "error: ";
if (!Whence.empty())
errs() << Whence << ": ";
errs() << Message << "\n";
::exit(1);
}
namespace {
enum ProfileKinds { instr, sample };
}
static void mergeInstrProfile(const cl::list<std::string> &Inputs,
StringRef OutputFilename) {
if (OutputFilename.compare("-") == 0)
exitWithError("Cannot write indexed profdata format to stdout.");
std::error_code EC;
raw_fd_ostream Output(OutputFilename.data(), EC, sys::fs::F_None);
if (EC)
exitWithError(EC.message(), OutputFilename);
InstrProfWriter Writer;
for (const auto &Filename : Inputs) {
auto ReaderOrErr = InstrProfReader::create(Filename);
if (std::error_code ec = ReaderOrErr.getError())
exitWithError(ec.message(), Filename);
auto Reader = std::move(ReaderOrErr.get());
for (const auto &I : *Reader)
if (std::error_code EC =
Writer.addFunctionCounts(I.Name, I.Hash, I.Counts))
errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n";
if (Reader->hasError())
exitWithError(Reader->getError().message(), Filename);
}
Writer.write(Output);
}
static void mergeSampleProfile(const cl::list<std::string> &Inputs,
StringRef OutputFilename,
sampleprof::SampleProfileFormat OutputFormat) {
using namespace sampleprof;
auto WriterOrErr = SampleProfileWriter::create(OutputFilename, OutputFormat);
if (std::error_code EC = WriterOrErr.getError())
exitWithError(EC.message(), OutputFilename);
auto Writer = std::move(WriterOrErr.get());
StringMap<FunctionSamples> ProfileMap;
for (const auto &Filename : Inputs) {
auto ReaderOrErr =
SampleProfileReader::create(Filename, getGlobalContext());
if (std::error_code EC = ReaderOrErr.getError())
exitWithError(EC.message(), Filename);
auto Reader = std::move(ReaderOrErr.get());
if (std::error_code EC = Reader->read())
exitWithError(EC.message(), Filename);
StringMap<FunctionSamples> &Profiles = Reader->getProfiles();
for (StringMap<FunctionSamples>::iterator I = Profiles.begin(),
E = Profiles.end();
I != E; ++I) {
StringRef FName = I->first();
FunctionSamples &Samples = I->second;
ProfileMap[FName].merge(Samples);
}
}
Writer->write(ProfileMap);
}
static int merge_main(int argc, const char *argv[]) {
cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore,
cl::desc("<filenames...>"));
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"), clEnumValEnd));
cl::opt<sampleprof::SampleProfileFormat> OutputFormat(
cl::desc("Format of output profile (only meaningful with --sample)"),
cl::init(sampleprof::SPF_Binary),
cl::values(clEnumValN(sampleprof::SPF_Binary, "binary",
"Binary encoding (default)"),
clEnumValN(sampleprof::SPF_Text, "text", "Text encoding"),
clEnumValN(sampleprof::SPF_GCC, "gcc", "GCC encoding"),
clEnumValEnd));
cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
if (ProfileKind == instr)
mergeInstrProfile(Inputs, OutputFilename);
else
mergeSampleProfile(Inputs, OutputFilename, OutputFormat);
return 0;
}
static int showInstrProfile(std::string Filename, bool ShowCounts,
bool ShowAllFunctions, std::string ShowFunction,
raw_fd_ostream &OS) {
auto ReaderOrErr = InstrProfReader::create(Filename);
if (std::error_code EC = ReaderOrErr.getError())
exitWithError(EC.message(), Filename);
auto Reader = std::move(ReaderOrErr.get());
uint64_t MaxFunctionCount = 0, MaxBlockCount = 0;
size_t ShownFunctions = 0, TotalFunctions = 0;
for (const auto &Func : *Reader) {
bool Show =
ShowAllFunctions || (!ShowFunction.empty() &&
Func.Name.find(ShowFunction) != Func.Name.npos);
++TotalFunctions;
assert(Func.Counts.size() > 0 && "function missing entry counter");
if (Func.Counts[0] > MaxFunctionCount)
MaxFunctionCount = Func.Counts[0];
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"
<< " Function count: " << Func.Counts[0] << "\n";
}
if (Show && ShowCounts)
OS << " Block counts: [";
for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) {
if (Func.Counts[I] > MaxBlockCount)
MaxBlockCount = Func.Counts[I];
if (Show && ShowCounts)
OS << (I == 1 ? "" : ", ") << Func.Counts[I];
}
if (Show && ShowCounts)
OS << "]\n";
}
if (Reader->hasError())
exitWithError(Reader->getError().message(), Filename);
if (ShowAllFunctions || !ShowFunction.empty())
OS << "Functions shown: " << ShownFunctions << "\n";
OS << "Total functions: " << TotalFunctions << "\n";
OS << "Maximum function count: " << MaxFunctionCount << "\n";
OS << "Maximum internal block count: " << MaxBlockCount << "\n";
return 0;
}
static int showSampleProfile(std::string Filename, bool ShowCounts,
bool ShowAllFunctions, std::string ShowFunction,
raw_fd_ostream &OS) {
using namespace sampleprof;
auto ReaderOrErr = SampleProfileReader::create(Filename, getGlobalContext());
if (std::error_code EC = ReaderOrErr.getError())
exitWithError(EC.message(), Filename);
auto Reader = std::move(ReaderOrErr.get());
Reader->read();
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> 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"), clEnumValEnd));
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)
exitWithError(EC.message(), OutputFilename);
if (ShowAllFunctions && !ShowFunction.empty())
errs() << "warning: -function argument ignored: showing all functions\n";
if (ProfileKind == instr)
return showInstrProfile(Filename, ShowCounts, ShowAllFunctions,
ShowFunction, OS);
else
return showSampleProfile(Filename, ShowCounts, ShowAllFunctions,
ShowFunction, OS);
}
int main(int argc, const char *argv[]) {
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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"
<< "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;
}
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