llvm/lld/MachO/BPSectionOrderer.h

//===- BPSectionOrderer.h ---------------------------------------*- 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 uses Balanced Partitioning to order sections to improve startup
/// time and compressed size.
///
//===----------------------------------------------------------------------===//

#ifndef LLD_MACHO_BPSECTION_ORDERER_H
#define LLD_MACHO_BPSECTION_ORDERER_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"

namespace lld::macho {

class InputSection;

/// Run Balanced Partitioning to find the optimal function and data order to
/// improve startup time and compressed size.
///
/// It is important that .subsections_via_symbols is used to ensure functions
/// and data are in their own sections and thus can be reordered.
llvm::DenseMap<const lld::macho::InputSection *, size_t>
runBalancedPartitioning(size_t &highestAvailablePriority,
                        llvm::StringRef profilePath,
                        bool forFunctionCompression, bool forDataCompression,
                        bool verbose);

} // namespace lld::macho

#endif