| //===- StringEntryToDwarfStringPoolEntryMap.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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_DWARFLINKER_PARALLEL_STRINGENTRYTODWARFSTRINGPOOLENTRYMAP_H |
| #define LLVM_LIB_DWARFLINKER_PARALLEL_STRINGENTRYTODWARFSTRINGPOOLENTRYMAP_H |
| |
| #include "DWARFLinkerGlobalData.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/DWARFLinker/StringPool.h" |
| |
| namespace llvm { |
| namespace dwarf_linker { |
| namespace parallel { |
| |
| /// This class creates a DwarfStringPoolEntry for the corresponding StringEntry. |
| class StringEntryToDwarfStringPoolEntryMap { |
| public: |
| StringEntryToDwarfStringPoolEntryMap(LinkingGlobalData &GlobalData) |
| : GlobalData(GlobalData) {} |
| ~StringEntryToDwarfStringPoolEntryMap() {} |
| |
| /// Create DwarfStringPoolEntry for specified StringEntry if necessary. |
| /// Initialize DwarfStringPoolEntry with initial values. |
| DwarfStringPoolEntryWithExtString *add(const StringEntry *String) { |
| DwarfStringPoolEntriesTy::iterator it = DwarfStringPoolEntries.find(String); |
| |
| if (it == DwarfStringPoolEntries.end()) { |
| DwarfStringPoolEntryWithExtString *DataPtr = |
| GlobalData.getAllocator() |
| .Allocate<DwarfStringPoolEntryWithExtString>(); |
| DataPtr->String = GlobalData.translateString(String->getKey()); |
| DataPtr->Index = DwarfStringPoolEntry::NotIndexed; |
| DataPtr->Offset = 0; |
| DataPtr->Symbol = nullptr; |
| it = DwarfStringPoolEntries.insert(std::make_pair(String, DataPtr)).first; |
| } |
| |
| assert(it->second != nullptr); |
| return it->second; |
| } |
| |
| /// Returns already existed DwarfStringPoolEntry for the specified |
| /// StringEntry. |
| DwarfStringPoolEntryWithExtString * |
| getExistingEntry(const StringEntry *String) const { |
| DwarfStringPoolEntriesTy::const_iterator it = |
| DwarfStringPoolEntries.find(String); |
| |
| assert(it != DwarfStringPoolEntries.end()); |
| assert(it->second != nullptr); |
| return it->second; |
| } |
| |
| /// Erase contents of StringsForEmission. |
| void clear() { DwarfStringPoolEntries.clear(); } |
| |
| protected: |
| using DwarfStringPoolEntriesTy = |
| DenseMap<const StringEntry *, DwarfStringPoolEntryWithExtString *>; |
| DwarfStringPoolEntriesTy DwarfStringPoolEntries; |
| |
| LinkingGlobalData &GlobalData; |
| }; |
| |
| } // end of namespace parallel |
| } // end of namespace dwarf_linker |
| } // end of namespace llvm |
| |
| #endif // LLVM_LIB_DWARFLINKER_PARALLEL_STRINGENTRYTODWARFSTRINGPOOLENTRYMAP_H |