75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
//===- StringEntryToDwarfStringPoolEntryMap.h -------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_DWARFLINKER_PARALLEL_STRINGENTRYTODWARFSTRINGPOOLENTRYMAP_H
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#define LLVM_LIB_DWARFLINKER_PARALLEL_STRINGENTRYTODWARFSTRINGPOOLENTRYMAP_H
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#include "DWARFLinkerGlobalData.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/DWARFLinker/StringPool.h"
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namespace llvm {
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namespace dwarf_linker {
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namespace parallel {
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/// This class creates a DwarfStringPoolEntry for the corresponding StringEntry.
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class StringEntryToDwarfStringPoolEntryMap {
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public:
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StringEntryToDwarfStringPoolEntryMap(LinkingGlobalData &GlobalData)
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: GlobalData(GlobalData) {}
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~StringEntryToDwarfStringPoolEntryMap() = default;
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/// Create DwarfStringPoolEntry for specified StringEntry if necessary.
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/// Initialize DwarfStringPoolEntry with initial values.
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DwarfStringPoolEntryWithExtString *add(const StringEntry *String) {
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DwarfStringPoolEntriesTy::iterator it = DwarfStringPoolEntries.find(String);
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if (it == DwarfStringPoolEntries.end()) {
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DwarfStringPoolEntryWithExtString *DataPtr =
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GlobalData.getAllocator()
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.Allocate<DwarfStringPoolEntryWithExtString>();
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DataPtr->String = String->getKey();
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DataPtr->Index = DwarfStringPoolEntry::NotIndexed;
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DataPtr->Offset = 0;
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DataPtr->Symbol = nullptr;
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it = DwarfStringPoolEntries.insert(std::make_pair(String, DataPtr)).first;
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}
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assert(it->second != nullptr);
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return it->second;
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}
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/// Returns already existed DwarfStringPoolEntry for the specified
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/// StringEntry.
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DwarfStringPoolEntryWithExtString *
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getExistingEntry(const StringEntry *String) const {
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DwarfStringPoolEntriesTy::const_iterator it =
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DwarfStringPoolEntries.find(String);
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assert(it != DwarfStringPoolEntries.end());
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assert(it->second != nullptr);
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return it->second;
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}
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/// Erase contents of StringsForEmission.
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void clear() { DwarfStringPoolEntries.clear(); }
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protected:
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using DwarfStringPoolEntriesTy =
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DenseMap<const StringEntry *, DwarfStringPoolEntryWithExtString *>;
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DwarfStringPoolEntriesTy DwarfStringPoolEntries;
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LinkingGlobalData &GlobalData;
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};
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} // end of namespace parallel
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} // end of namespace dwarf_linker
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} // end of namespace llvm
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#endif // LLVM_LIB_DWARFLINKER_PARALLEL_STRINGENTRYTODWARFSTRINGPOOLENTRYMAP_H
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