llvm/llvm/include/llvm/PassRegistry.h

//===- llvm/PassRegistry.h - Pass Information Registry ----------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file defines PassRegistry, a class that is used in the initialization
// and registration of passes.  At application startup, passes are registered
// with the PassRegistry, which is later provided to the PassManager for
// dependency resolution and similar tasks.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_PASSREGISTRY_H
#define LLVM_PASSREGISTRY_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/RWMutex.h"
#include <memory>
#include <vector>

namespace llvm {

class PassInfo;
struct PassRegistrationListener;

/// PassRegistry - This class manages the registration and intitialization of
/// the pass subsystem as application startup, and assists the PassManager
/// in resolving pass dependencies.
/// NOTE: PassRegistry is NOT thread-safe.  If you want to use LLVM on multiple
/// threads simultaneously, you will need to use a separate PassRegistry on
/// each thread.
class PassRegistry { … };

} // end namespace llvm

#endif // LLVM_PASSREGISTRY_H