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//===- 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 = 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
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