llvm/llvm/lib/CodeGen/MachineRegionInfo.cpp

//===- lib/Codegen/MachineRegionInfo.cpp ----------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "llvm/CodeGen/MachineRegionInfo.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/RegionInfoImpl.h"
#include "llvm/CodeGen/MachinePostDominators.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"

#define DEBUG_TYPE …

usingnamespacellvm;

STATISTIC(numMachineRegions,       "The # of machine regions");
STATISTIC(numMachineSimpleRegions, "The # of simple machine regions");

namespace llvm {

template class RegionBase<RegionTraits<MachineFunction>>;
template class RegionNodeBase<RegionTraits<MachineFunction>>;
template class RegionInfoBase<RegionTraits<MachineFunction>>;

} // end namespace llvm

//===----------------------------------------------------------------------===//
// MachineRegion implementation

MachineRegion::MachineRegion(MachineBasicBlock *Entry, MachineBasicBlock *Exit,
                             MachineRegionInfo* RI,
                             MachineDominatorTree *DT, MachineRegion *Parent) : … { … }

MachineRegion::~MachineRegion() = default;

//===----------------------------------------------------------------------===//
// MachineRegionInfo implementation

MachineRegionInfo::MachineRegionInfo() = default;

MachineRegionInfo::~MachineRegionInfo() = default;

void MachineRegionInfo::updateStatistics(MachineRegion *R) { … }

void MachineRegionInfo::recalculate(MachineFunction &F,
                                    MachineDominatorTree *DT_,
                                    MachinePostDominatorTree *PDT_,
                                    MachineDominanceFrontier *DF_) { … }

//===----------------------------------------------------------------------===//
// MachineRegionInfoPass implementation
//

MachineRegionInfoPass::MachineRegionInfoPass() : … { … }

MachineRegionInfoPass::~MachineRegionInfoPass() = default;

bool MachineRegionInfoPass::runOnMachineFunction(MachineFunction &F) { … }

void MachineRegionInfoPass::releaseMemory() { … }

void MachineRegionInfoPass::verifyAnalysis() const { … }

void MachineRegionInfoPass::getAnalysisUsage(AnalysisUsage &AU) const { … }

void MachineRegionInfoPass::print(raw_ostream &OS, const Module *) const { … }

#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void MachineRegionInfoPass::dump() const {
  RI.dump();
}
#endif

char MachineRegionInfoPass::ID = …;
char &MachineRegionInfoPassID = …;

INITIALIZE_PASS_BEGIN(MachineRegionInfoPass, DEBUG_TYPE,
                      "Detect single entry single exit regions", true, true)
INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
INITIALIZE_PASS_DEPENDENCY(MachinePostDominatorTreeWrapperPass)
INITIALIZE_PASS_DEPENDENCY(MachineDominanceFrontier)
INITIALIZE_PASS_END(MachineRegionInfoPass, DEBUG_TYPE,
                    "Detect single entry single exit regions", true, true)

// Create methods available outside of this file, to use them
// "include/llvm/LinkAllPasses.h". Otherwise the pass would be deleted by
// the link time optimization.

namespace llvm {

FunctionPass *createMachineRegionInfoPass() { … }

} // end namespace llvm