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Diffstat (limited to 'contrib/llvm-project/llvm/lib/DWARFLinker/Parallel/StringEntryToDwarfStringPoolEntryMap.h')
-rw-r--r-- | contrib/llvm-project/llvm/lib/DWARFLinker/Parallel/StringEntryToDwarfStringPoolEntryMap.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/DWARFLinker/Parallel/StringEntryToDwarfStringPoolEntryMap.h b/contrib/llvm-project/llvm/lib/DWARFLinker/Parallel/StringEntryToDwarfStringPoolEntryMap.h new file mode 100644 index 000000000000..858f224777db --- /dev/null +++ b/contrib/llvm-project/llvm/lib/DWARFLinker/Parallel/StringEntryToDwarfStringPoolEntryMap.h @@ -0,0 +1,74 @@ +//===- 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 |