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llvm-mirror/tools/llvm-profdata/llvm-profdata.cpp
Justin Bogner fe7b2109de Profile: Remove an inefficient and unnecessary API function 
This was leftover from an approach I abandoned, but I forgot to update
it before committing.

llvm-svn: 203708
2014-03-12 20:26:37 +00:00

324 lines
11 KiB
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Raw Blame History

//===- 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/Profile/ProfileDataReader.h"
#include "llvm/Profile/ProfileDataWriter.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
static void exitWithError(const std::string &Message,
const std::string &Filename, int64_t Line = -1) {
errs() << "error: " << Filename;
if (Line >= 0)
errs() << ":" << Line;
errs() << ": " << Message << "\n";
::exit(1);
}
int merge_main(int argc, const char *argv[]) {
cl::opt<std::string> Filename1(cl::Positional, cl::Required,
cl::desc("file1"));
cl::opt<std::string> Filename2(cl::Positional, cl::Required,
cl::desc("file2"));
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::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
std::unique_ptr<ProfileDataReader> Reader1, Reader2;
if (error_code EC = ProfileDataReader::create(Filename1, Reader1))
exitWithError(EC.message(), Filename1);
if (error_code EC = ProfileDataReader::create(Filename2, Reader2))
exitWithError(EC.message(), Filename2);
if (OutputFilename.empty())
OutputFilename = "-";
std::string ErrorInfo;
raw_fd_ostream Output(OutputFilename.data(), ErrorInfo, sys::fs::F_Text);
if (!ErrorInfo.empty())
exitWithError(ErrorInfo, OutputFilename);
if (Output.is_displayed())
exitWithError("Refusing to write a binary file to stdout", OutputFilename);
StringRef Name1, Name2;
std::vector<uint64_t> Counts1, Counts2, NewCounts;
uint64_t Hash1, Hash2;
ProfileDataWriter Writer;
ProfileDataReader::name_iterator I1 = Reader1->begin(),
E1 = Reader1->end(),
I2 = Reader2->begin(),
E2 = Reader2->end();
for (; I1 != E1 && I2 != E2; ++I1, ++I2) {
Name1 = *I1;
Name2 = *I2;
if (Name1 != Name2)
exitWithError("Function name mismatch", Filename2); // ???
if (error_code EC = Reader1->getFunctionCounts(Name1, Hash1, Counts1))
exitWithError(EC.message(), Filename1);
if (error_code EC = Reader2->getFunctionCounts(Name2, Hash2, Counts2))
exitWithError(EC.message(), Filename2);
if (Counts1.size() != Counts2.size())
exitWithError("Function count mismatch", Filename2); // ???
if (Hash1 != Hash2)
exitWithError("Function hash mismatch", Filename2); // ???
for (size_t II = 0, EE = Counts1.size(); II < EE; ++II) {
uint64_t Sum = Counts1[II] + Counts2[II];
if (Sum < Counts1[II])
exitWithError("Counter overflow", Filename2); // ???
NewCounts.push_back(Sum);
}
Writer.addFunctionCounts(Name1, Hash1, NewCounts.size(), NewCounts.data());
Counts1.clear();
Counts2.clear();
NewCounts.clear();
}
if (I1 != E1 || I2 != E2)
exitWithError("Truncated file", Filename2);
Writer.write(Output);
return 0;
}
struct HashPrinter {
uint64_t Hash;
HashPrinter(uint64_t Hash) : Hash(Hash) {}
void print(raw_ostream &OS) const {
char Buf[18], *Cur = Buf;
*Cur++ = '0'; *Cur++ = 'x';
for (unsigned I = 16; I;) {
char Digit = 0xF & (Hash >> (--I * 4));
*Cur++ = (Digit < 10 ? '0' + Digit : 'A' + Digit - 10);
}
OS.write(Buf, 18);
}
};
static raw_ostream &operator<<(raw_ostream &OS, const HashPrinter &Hash) {
Hash.print(OS);
return OS;
}
struct FreqPrinter {
double Freq;
FreqPrinter(double Freq) : Freq(Freq) {}
void print(raw_ostream &OS) const {
OS << (unsigned)(Freq * 100) << "." << ((unsigned)(Freq * 1000) % 10)
<< ((unsigned)(Freq * 10000) % 10) << "%";
}
};
static raw_ostream &operator<<(raw_ostream &OS, const FreqPrinter &Freq) {
Freq.print(OS);
return OS;
}
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::opt<bool> ShowAllFunctions("all-functions", cl::init(false));
cl::opt<std::string> ShowFunction("function");
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::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
std::unique_ptr<ProfileDataReader> Reader;
if (error_code EC = ProfileDataReader::create(Filename, Reader))
exitWithError(EC.message(), Filename);
if (OutputFilename.empty())
OutputFilename = "-";
std::string ErrorInfo;
raw_fd_ostream OS(OutputFilename.data(), ErrorInfo, sys::fs::F_Text);
if (!ErrorInfo.empty())
exitWithError(ErrorInfo, OutputFilename);
if (ShowAllFunctions && !ShowFunction.empty())
errs() << "warning: -function argument ignored: showing all functions\n";
uint64_t MaxFunctionCount = Reader->getMaximumFunctionCount();
uint64_t MaxBlockCount = 0;
uint64_t Hash;
size_t ShownFunctions = false;
std::vector<uint64_t> Counts;
for (const auto &Name : *Reader) {
bool Show = ShowAllFunctions || Name.find(ShowFunction) != Name.npos;
if (error_code EC = Reader->getFunctionCounts(Name, Hash, Counts))
exitWithError(EC.message(), Filename);
if (Show) {
double CallFreq = Counts[0] / (double)MaxFunctionCount;
if (!ShownFunctions)
OS << "Counters:\n";
++ShownFunctions;
OS << " " << Name << ":\n"
<< " Hash: " << HashPrinter(Hash) << "\n"
<< " Relative call frequency: " << FreqPrinter(CallFreq) << "\n"
<< " Counters: " << Counts.size() << "\n"
<< " Function count: " << Counts[0] << "\n";
}
if (Show && ShowCounts)
OS << " Block counts: [";
for (size_t I = 1, E = Counts.size(); I < E; ++I) {
if (Counts[I] > MaxBlockCount)
MaxBlockCount = Counts[I];
if (Show && ShowCounts)
OS << (I == 1 ? "" : ", ") << Counts[I];
}
if (Show && ShowCounts)
OS << "]\n";
Counts.clear();
}
if (ShowAllFunctions || !ShowFunction.empty())
OS << "Functions shown: " << ShownFunctions << "\n";
OS << "Total functions: " << Reader->numProfiledFunctions() << "\n";
OS << "Maximum function count: " << MaxFunctionCount << "\n";
OS << "Maximum internal block count: " << MaxBlockCount << "\n";
return 0;
}
int generate_main(int argc, const char *argv[]) {
cl::opt<std::string> InputName(cl::Positional, cl::Required,
cl::desc("<input-file>"));
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::ParseCommandLineOptions(argc, argv, "LLVM profile data generator\n");
if (OutputFilename.empty())
OutputFilename = "-";
std::string ErrorInfo;
raw_fd_ostream Output(OutputFilename.data(), ErrorInfo, sys::fs::F_Text);
if (!ErrorInfo.empty())
exitWithError(ErrorInfo, OutputFilename);
if (Output.is_displayed())
exitWithError("Refusing to write a binary file to stdout", OutputFilename);
std::unique_ptr<MemoryBuffer> Buffer;
if (error_code EC = MemoryBuffer::getFile(InputName, Buffer))
exitWithError(EC.message(), InputName);
ProfileDataWriter Writer;
StringRef Name;
uint64_t Hash, NumCounters;
std::vector<uint64_t> Counters;
for (line_iterator I(*Buffer, '#'); !I.is_at_end(); ++I) {
if (I->empty())
continue;
Name = *I;
if ((++I).is_at_end())
exitWithError("Truncated file", InputName, I.line_number());
if (I->getAsInteger(10, Hash))
exitWithError("Failed to read hash", InputName, I.line_number());
if ((++I).is_at_end())
exitWithError("Truncated file", InputName, I.line_number());
if (I->getAsInteger(10, NumCounters))
exitWithError("Failed to read num counters", InputName, I.line_number());
for (uint64_t CurCounter = 0; CurCounter < NumCounters; ++CurCounter) {
uint64_t Counter;
if ((++I).is_at_end())
exitWithError("Truncated file", InputName, I.line_number());
if (I->getAsInteger(10, Counter))
exitWithError("Failed to read counter", InputName, I.line_number());
Counters.push_back(Counter);
}
Writer.addFunctionCounts(Name, Hash, NumCounters, Counters.data());
Counters.clear();
}
Writer.write(Output);
return 0;
}
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 *[]) = 0;
if (strcmp(argv[1], "merge") == 0)
func = merge_main;
else if (strcmp(argv[1], "show") == 0)
func = show_main;
else if (strcmp(argv[1], "generate") == 0)
func = generate_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, generate\n";
return 0;
}
}
if (argc < 2)
errs() << ProgName << ": No command specified!\n";
else
errs() << ProgName << ": Unknown command!\n";
errs() << "USAGE: " << ProgName << " <merge|show|generate> [args...]\n";
return 1;
}
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