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c04d9d57ee
... to clarify ownership, aligning with other parameters. Using `std::unique_ptr` encourages users to manage `createMCInstPrinter` with a unique_ptr instead of a raw pointer, reducing the risk of memory leaks. * llvm-mc: fix a leak and update llvm/test/tools/llvm-mc/disassembler-options.test * #121078 copied the llvm-mc code to CodeGenTargetMachineImpl and made the same mistake. Fixed by 2b8cc651dca0c000ee18ec79bd5de4826156c9d6 Using unique_ptr requires #include MCInstPrinter.h in a few translation units. * Delete a createAsmStreamer overload I deprecated in 2024 * SystemZMCTargetDesc.cpp: rename to `createSystemZAsmStreamer` to fix an overload conflict. Pull Request: https://github.com/llvm/llvm-project/pull/135128
134 lines
4.8 KiB
C++
134 lines
4.8 KiB
C++
//===- DwarfEmitterImpl.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_DWARFEMITTERIMPL_H
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#define LLVM_LIB_DWARFLINKER_PARALLEL_DWARFEMITTERIMPL_H
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#include "DWARFLinkerCompileUnit.h"
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#include "llvm/BinaryFormat/Swift.h"
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#include "llvm/CodeGen/AccelTable.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/DWARFLinker/Parallel/DWARFLinker.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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/// User of DwarfEmitterImpl should call initialization code
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/// for AsmPrinter:
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///
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/// InitializeAllTargetInfos();
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/// InitializeAllTargetMCs();
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/// InitializeAllTargets();
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/// InitializeAllAsmPrinters();
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template <typename DataT> class AccelTable;
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class MCCodeEmitter;
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namespace dwarf_linker {
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namespace parallel {
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using DebugNamesUnitsOffsets = std::vector<std::variant<MCSymbol *, uint64_t>>;
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using CompUnitIDToIdx = DenseMap<unsigned, unsigned>;
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/// This class emits DWARF data to the output stream. It emits already
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/// generated section data and specific data, which could not be generated
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/// by CompileUnit.
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class DwarfEmitterImpl {
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public:
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DwarfEmitterImpl(DWARFLinker::OutputFileType OutFileType,
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raw_pwrite_stream &OutFile)
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: OutFile(OutFile), OutFileType(OutFileType) {}
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/// Initialize AsmPrinter data.
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Error init(Triple TheTriple, StringRef Swift5ReflectionSegmentName);
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/// Returns triple of output stream.
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const Triple &getTargetTriple() { return MC->getTargetTriple(); }
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/// Dump the file to the disk.
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void finish() { MS->finish(); }
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/// Emit abbreviations.
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void emitAbbrevs(const SmallVector<std::unique_ptr<DIEAbbrev>> &Abbrevs,
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unsigned DwarfVersion);
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/// Emit compile unit header.
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void emitCompileUnitHeader(DwarfUnit &Unit);
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/// Emit DIE recursively.
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void emitDIE(DIE &Die);
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/// Returns size of generated .debug_info section.
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uint64_t getDebugInfoSectionSize() const { return DebugInfoSectionSize; }
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/// Emits .debug_names section according to the specified \p Table.
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void emitDebugNames(DWARF5AccelTable &Table,
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DebugNamesUnitsOffsets &CUOffsets,
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CompUnitIDToIdx &UnitIDToIdxMap);
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/// Emits .apple_names section according to the specified \p Table.
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void emitAppleNames(AccelTable<AppleAccelTableStaticOffsetData> &Table);
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/// Emits .apple_namespaces section according to the specified \p Table.
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void emitAppleNamespaces(AccelTable<AppleAccelTableStaticOffsetData> &Table);
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/// Emits .apple_objc section according to the specified \p Table.
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void emitAppleObjc(AccelTable<AppleAccelTableStaticOffsetData> &Table);
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/// Emits .apple_types section according to the specified \p Table.
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void emitAppleTypes(AccelTable<AppleAccelTableStaticTypeData> &Table);
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private:
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// Enumerate all string patches and write them into the destination section.
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// Order of patches is the same as in original input file. To avoid emitting
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// the same string twice we accumulate NextOffset value. Thus if string
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// offset smaller than NextOffset value then the patch is skipped (as that
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// string was emitted earlier).
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template <typename PatchTy>
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void emitStringsImpl(ArrayList<PatchTy> &StringPatches,
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const StringEntryToDwarfStringPoolEntryMap &Strings,
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uint64_t &NextOffset, MCSection *OutSection);
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/// \defgroup MCObjects MC layer objects constructed by the streamer
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/// @{
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std::unique_ptr<MCRegisterInfo> MRI;
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std::unique_ptr<MCAsmInfo> MAI;
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std::unique_ptr<MCObjectFileInfo> MOFI;
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std::unique_ptr<MCContext> MC;
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MCAsmBackend *MAB; // Owned by MCStreamer
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std::unique_ptr<MCInstrInfo> MII;
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std::unique_ptr<MCSubtargetInfo> MSTI;
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std::unique_ptr<MCInstPrinter> MIP; // Owned by AsmPrinter
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MCCodeEmitter *MCE; // Owned by MCStreamer
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MCStreamer *MS; // Owned by AsmPrinter
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std::unique_ptr<TargetMachine> TM;
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std::unique_ptr<AsmPrinter> Asm;
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/// @}
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/// The output file we stream the linked Dwarf to.
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raw_pwrite_stream &OutFile;
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DWARFLinkerBase::OutputFileType OutFileType =
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DWARFLinkerBase::OutputFileType::Object;
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uint64_t DebugInfoSectionSize = 0;
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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_DWARFEMITTERIMPL_H
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