llvm-profgen.cpp | Explore in Territory

//===- llvm-profgen.cpp - LLVM SPGO profile generation tool -----*- C++ -*-===//
//
// 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-profgen generates SPGO profiles from perf script ouput.
//
//===----------------------------------------------------------------------===//

#include "ErrorHandling.h"
#include "PerfReader.h"
#include "ProfileGenerator.h"
#include "ProfiledBinary.h"
#include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/VirtualFileSystem.h"

static cl::OptionCategory ProfGenCategory("ProfGen Options");

static cl::opt<std::string> PerfScriptFilename(
    "perfscript", cl::value_desc("perfscript"),
    cl::desc("Path of perf-script trace created by Linux perf tool with "
             "`script` command(the raw perf.data should be profiled with -b)"),
    cl::cat(ProfGenCategory));
static cl::alias PSA("ps", cl::desc("Alias for --perfscript"),
                     cl::aliasopt(PerfScriptFilename));

static cl::opt<std::string> PerfDataFilename(
    "perfdata", cl::value_desc("perfdata"),
    cl::desc("Path of raw perf data created by Linux perf tool (it should be "
             "profiled with -b)"),
    cl::cat(ProfGenCategory));
static cl::alias PDA("pd", cl::desc("Alias for --perfdata"),
                     cl::aliasopt(PerfDataFilename));

static cl::opt<std::string> UnsymbolizedProfFilename(
    "unsymbolized-profile", cl::value_desc("unsymbolized profile"),
    cl::desc("Path of the unsymbolized profile created by "
             "`llvm-profgen` with `--skip-symbolization`"),
    cl::cat(ProfGenCategory));
static cl::alias UPA("up", cl::desc("Alias for --unsymbolized-profile"),
                     cl::aliasopt(UnsymbolizedProfFilename));

static cl::opt<std::string> SampleProfFilename(
    "llvm-sample-profile", cl::value_desc("llvm sample profile"),
    cl::desc("Path of the LLVM sample profile"), cl::cat(ProfGenCategory));

static cl::opt<std::string>
    BinaryPath("binary", cl::value_desc("binary"), cl::Required,
               cl::desc("Path of profiled executable binary."),
               cl::cat(ProfGenCategory));

static cl::opt<uint32_t>
    ProcessId("pid", cl::value_desc("process Id"), cl::init(0),
              cl::desc("Process Id for the profiled executable binary."),
              cl::cat(ProfGenCategory));

static cl::opt<std::string> DebugBinPath(
    "debug-binary", cl::value_desc("debug-binary"),
    cl::desc("Path of debug info binary, llvm-profgen will load the DWARF info "
             "from it instead of the executable binary."),
    cl::cat(ProfGenCategory));

extern cl::opt<bool> ShowDisassemblyOnly;
extern cl::opt<bool> ShowSourceLocations;
extern cl::opt<bool> SkipSymbolization;

usingnamespacellvm;
usingnamespacesampleprof;

// Validate the command line input.
static void validateCommandLine() { … }

static PerfInputFile getPerfInputFile() { … }

int main(int argc, const char *argv[]) { … }
llvm/llvm/tools/llvm-profgen/llvm-profgen.cpp
