llvm/bolt/tools/driver/llvm-bolt.cpp

//===- bolt/tools/driver/llvm-bolt.cpp - Feedback-directed optimizer ------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This is a binary optimizer that will take 'perf' output and change
// basic block layout for better performance (a.k.a. branch straightening),
// plus some other optimizations that are better performed on a binary.
//
//===----------------------------------------------------------------------===//

#include "bolt/Profile/DataAggregator.h"
#include "bolt/Rewrite/MachORewriteInstance.h"
#include "bolt/Rewrite/RewriteInstance.h"
#include "bolt/Utils/CommandLineOpts.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Object/Binary.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/TargetSelect.h"

#define DEBUG_TYPE …

usingnamespacellvm;
usingnamespaceobject;
usingnamespacebolt;

namespace opts {

static cl::OptionCategory *BoltCategories[] = …;

static cl::OptionCategory *BoltDiffCategories[] = …;

static cl::OptionCategory *Perf2BoltCategories[] = …;

static cl::opt<std::string> InputFilename(cl::Positional,
                                          cl::desc("<executable>"),
                                          cl::Required, cl::cat(BoltCategory),
                                          cl::sub(cl::SubCommand::getAll()));

static cl::opt<std::string>
InputDataFilename("data",
  cl::desc("<data file>"),
  cl::Optional,
  cl::cat(BoltCategory));

static cl::alias
BoltProfile("b",
  cl::desc("alias for -data"),
  cl::aliasopt(InputDataFilename),
  cl::cat(BoltCategory));

cl::opt<std::string>
    LogFile("log-file",
            cl::desc("redirect journaling to a file instead of stdout/stderr"),
            cl::Hidden, cl::cat(BoltCategory));

static cl::opt<std::string>
InputDataFilename2("data2",
  cl::desc("<data file>"),
  cl::Optional,
  cl::cat(BoltCategory));

static cl::opt<std::string>
InputFilename2(
  cl::Positional,
  cl::desc("<executable>"),
  cl::Optional,
  cl::cat(BoltDiffCategory));

} // namespace opts

static StringRef ToolName;

static void report_error(StringRef Message, std::error_code EC) { … }

static void report_error(StringRef Message, Error E) { … }

static void printBoltRevision(llvm::raw_ostream &OS) { … }

void perf2boltMode(int argc, char **argv) { … }

void boltDiffMode(int argc, char **argv) { … }

void boltMode(int argc, char **argv) { … }

static std::string GetExecutablePath(const char *Argv0) { … }

int main(int argc, char **argv) { … }