llvm/llvm/include/llvm/IR/PassTimingInfo.h

//===- PassTimingInfo.h - pass execution timing -----------------*- 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
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This header defines classes/functions to handle pass execution timing
/// information with interfaces for both pass managers.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_IR_PASSTIMINGINFO_H
#define LLVM_IR_PASSTIMINGINFO_H

#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Timer.h"
#include <memory>
#include <utility>

namespace llvm {

class Pass;
class PassInstrumentationCallbacks;
class raw_ostream;

/// If -time-passes has been specified, report the timings immediately and then
/// reset the timers to zero. By default it uses the stream created by
/// CreateInfoOutputFile().
void reportAndResetTimings(raw_ostream *OutStream = nullptr);

/// Request the timer for this legacy-pass-manager's pass instance.
Timer *getPassTimer(Pass *);

/// This class implements -time-passes functionality for new pass manager.
/// It provides the pass-instrumentation callbacks that measure the pass
/// execution time. They collect timing info into individual timers as
/// passes are being run. At the end of its life-time it prints the resulting
/// timing report.
class TimePassesHandler { … };

} // namespace llvm

#endif