llvm.org GIT mirror llvm / 1b27914 include / llvm / ProfileData / InstrProfWriter.h

Tree @1b27914 (Download .tar.gz)

InstrProfWriter.h @1b27914raw · history · blame

//=-- InstrProfWriter.h - Instrumented profiling writer -----------*- C++ -*-=//
//                     The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// This file contains support for writing profiling data for instrumentation
// based PGO and coverage.


#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ProfileData/InstrProf.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/raw_ostream.h"
#include <vector>

namespace llvm {

/// Writer for instrumentation based profile data.
class InstrProfWriter {
  typedef SmallDenseMap<uint64_t, std::vector<uint64_t>, 1> CounterData;
  StringMap<CounterData> FunctionData;
  uint64_t MaxFunctionCount;
  InstrProfWriter() : MaxFunctionCount(0) {}

  /// Add function counts for the given function. If there are already counts
  /// for this function and the hash and number of counts match, each counter is
  /// summed.
  std::error_code addFunctionCounts(StringRef FunctionName,
                                    uint64_t FunctionHash,
                                    ArrayRef<uint64_t> Counters);
  /// Ensure that all data is written to disk.
  void write(raw_fd_ostream &OS);

} // end namespace llvm