llvm/bolt/lib/Core/DebugNames.cpp

//===- bolt/Rewrite/DebugNames.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 "bolt/Core/DebugNames.h"
#include "bolt/Core/BinaryContext.h"
#include "llvm/DebugInfo/DWARF/DWARFExpression.h"
#include "llvm/DebugInfo/DWARF/DWARFTypeUnit.h"
#include "llvm/Support/EndianStream.h"
#include "llvm/Support/LEB128.h"
#include <cstdint>
#include <optional>

namespace llvm {
namespace bolt {
DWARF5AcceleratorTable::DWARF5AcceleratorTable(
    const bool CreateDebugNames, BinaryContext &BC,
    DebugStrWriter &MainBinaryStrWriter)
    : … { … }

void DWARF5AcceleratorTable::setCurrentUnit(DWARFUnit &Unit,
                                            const uint64_t UnitStartOffset) { … }

void DWARF5AcceleratorTable::addUnit(DWARFUnit &Unit,
                                     const std::optional<uint64_t> &DWOID) { … }

// Returns true if DW_TAG_variable should be included in .debug-names based on
// section 6.1.1.1 for DWARF5 spec.
static bool shouldIncludeVariable(const DWARFUnit &Unit, const DIE &Die) { … }

bool static canProcess(const DWARFUnit &Unit, const DIE &Die,
                       std::string &NameToUse, const bool TagsOnly) { … }

bool DWARF5AcceleratorTable::canGenerateEntryWithCrossCUReference(
    const DWARFUnit &Unit, const DIE &Die,
    const DWARFAbbreviationDeclaration::AttributeSpec &AttrSpec) { … }
/// Returns name offset in String Offset section.
static uint64_t getNameOffset(BinaryContext &BC, DWARFUnit &Unit,
                              const uint64_t Index) { … }

static uint64_t getEntryID(const BOLTDWARF5AccelTableData &Entry) { … }

std::optional<BOLTDWARF5AccelTableData *>
DWARF5AcceleratorTable::addAccelTableEntry(
    DWARFUnit &Unit, const DIE &Die, const std::optional<uint64_t> &DWOID,
    const uint32_t NumberParentsInChain,
    std::optional<BOLTDWARF5AccelTableData *> &Parent) { … }

/// Algorithm from llvm implementation.
void DWARF5AcceleratorTable::computeBucketCount() { … }

/// Bucket code as in: AccelTableBase::finalize()
void DWARF5AcceleratorTable::finalize() { … }

std::optional<DWARF5AccelTable::UnitIndexAndEncoding>
DWARF5AcceleratorTable::getIndexForEntry(
    const BOLTDWARF5AccelTableData &Value) const { … }

std::optional<DWARF5AccelTable::UnitIndexAndEncoding>
DWARF5AcceleratorTable::getSecondIndexForEntry(
    const BOLTDWARF5AccelTableData &Value) const { … }

void DWARF5AcceleratorTable::populateAbbrevsMap() { … }

void DWARF5AcceleratorTable::writeEntry(BOLTDWARF5AccelTableData &Entry) { … }

void DWARF5AcceleratorTable::writeEntries() { … }

void DWARF5AcceleratorTable::writeAugmentationString() { … }

/// Calculates size of .debug_names header without Length field.
static constexpr uint32_t getDebugNamesHeaderSize() { … }

void DWARF5AcceleratorTable::emitHeader() const { … }

void DWARF5AcceleratorTable::emitCUList() const { … }
void DWARF5AcceleratorTable::emitTUList() const { … }
void DWARF5AcceleratorTable::emitBuckets() const { … }
void DWARF5AcceleratorTable::emitHashes() const { … }
void DWARF5AcceleratorTable::emitStringOffsets() const { … }
void DWARF5AcceleratorTable::emitOffsets() const { … }
void DWARF5AcceleratorTable::emitAbbrevs() { … }
void DWARF5AcceleratorTable::emitData() { … }
void DWARF5AcceleratorTable::emitAugmentationString() const { … }
void DWARF5AcceleratorTable::emitAccelTable() { … }
} // namespace bolt
} // namespace llvm