LCOV - code coverage report
Current view: top level - include/llvm/MC - MCDwarf.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 47 47 100.0 %
Date: 2017-09-14 15:23:50 Functions: 5 5 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===- MCDwarf.h - Machine Code Dwarf support -------------------*- C++ -*-===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : // This file contains the declaration of the MCDwarfFile to support the dwarf
      11             : // .file directive and the .loc directive.
      12             : //
      13             : //===----------------------------------------------------------------------===//
      14             : 
      15             : #ifndef LLVM_MC_MCDWARF_H
      16             : #define LLVM_MC_MCDWARF_H
      17             : 
      18             : #include "llvm/ADT/MapVector.h"
      19             : #include "llvm/ADT/SmallVector.h"
      20             : #include "llvm/ADT/StringMap.h"
      21             : #include "llvm/ADT/StringRef.h"
      22             : #include "llvm/MC/MCSection.h"
      23             : #include <cassert>
      24             : #include <cstdint>
      25             : #include <string>
      26             : #include <utility>
      27             : #include <vector>
      28             : 
      29             : namespace llvm {
      30             : 
      31             : template <typename T> class ArrayRef;
      32             : class MCAsmBackend;
      33             : class MCContext;
      34             : class MCObjectStreamer;
      35             : class MCStreamer;
      36             : class MCSymbol;
      37             : class raw_ostream;
      38             : class SMLoc;
      39             : class SourceMgr;
      40             : 
      41             : /// \brief Instances of this class represent the name of the dwarf
      42             : /// .file directive and its associated dwarf file number in the MC file,
      43             : /// and MCDwarfFile's are created and uniqued by the MCContext class where
      44             : /// the file number for each is its index into the vector of DwarfFiles (note
      45             : /// index 0 is not used and not a valid dwarf file number).
      46       28748 : struct MCDwarfFile {
      47             :   // \brief The base name of the file without its directory path.
      48             :   // The StringRef references memory allocated in the MCContext.
      49             :   std::string Name;
      50             : 
      51             :   // \brief The index into the list of directory names for this file name.
      52             :   unsigned DirIndex;
      53             : };
      54             : 
      55             : /// \brief Instances of this class represent the information from a
      56             : /// dwarf .loc directive.
      57             : class MCDwarfLoc {
      58             :   uint32_t FileNum;
      59             :   uint32_t Line;
      60             :   uint16_t Column;
      61             :   // Flags (see #define's below)
      62             :   uint8_t Flags;
      63             :   uint8_t Isa;
      64             :   uint32_t Discriminator;
      65             : 
      66             : // Flag that indicates the initial value of the is_stmt_start flag.
      67             : #define DWARF2_LINE_DEFAULT_IS_STMT 1
      68             : 
      69             : #define DWARF2_FLAG_IS_STMT (1 << 0)
      70             : #define DWARF2_FLAG_BASIC_BLOCK (1 << 1)
      71             : #define DWARF2_FLAG_PROLOGUE_END (1 << 2)
      72             : #define DWARF2_FLAG_EPILOGUE_BEGIN (1 << 3)
      73             : 
      74             : private: // MCContext manages these
      75             :   friend class MCContext;
      76             :   friend class MCDwarfLineEntry;
      77             : 
      78             :   MCDwarfLoc(unsigned fileNum, unsigned line, unsigned column, unsigned flags,
      79             :              unsigned isa, unsigned discriminator)
      80       23941 :       : FileNum(fileNum), Line(line), Column(column), Flags(flags), Isa(isa),
      81       23941 :         Discriminator(discriminator) {}
      82             : 
      83             :   // Allow the default copy constructor and assignment operator to be used
      84             :   // for an MCDwarfLoc object.
      85             : 
      86             : public:
      87             :   /// \brief Get the FileNum of this MCDwarfLoc.
      88             :   unsigned getFileNum() const { return FileNum; }
      89             : 
      90             :   /// \brief Get the Line of this MCDwarfLoc.
      91             :   unsigned getLine() const { return Line; }
      92             : 
      93             :   /// \brief Get the Column of this MCDwarfLoc.
      94      420574 :   unsigned getColumn() const { return Column; }
      95             : 
      96             :   /// \brief Get the Flags of this MCDwarfLoc.
      97      421757 :   unsigned getFlags() const { return Flags; }
      98             : 
      99             :   /// \brief Get the Isa of this MCDwarfLoc.
     100      420574 :   unsigned getIsa() const { return Isa; }
     101             : 
     102             :   /// \brief Get the Discriminator of this MCDwarfLoc.
     103             :   unsigned getDiscriminator() const { return Discriminator; }
     104             : 
     105             :   /// \brief Set the FileNum of this MCDwarfLoc.
     106      421768 :   void setFileNum(unsigned fileNum) { FileNum = fileNum; }
     107             : 
     108             :   /// \brief Set the Line of this MCDwarfLoc.
     109      421768 :   void setLine(unsigned line) { Line = line; }
     110             : 
     111             :   /// \brief Set the Column of this MCDwarfLoc.
     112             :   void setColumn(unsigned column) {
     113             :     assert(column <= UINT16_MAX);
     114      421768 :     Column = column;
     115             :   }
     116             : 
     117             :   /// \brief Set the Flags of this MCDwarfLoc.
     118             :   void setFlags(unsigned flags) {
     119             :     assert(flags <= UINT8_MAX);
     120      421768 :     Flags = flags;
     121             :   }
     122             : 
     123             :   /// \brief Set the Isa of this MCDwarfLoc.
     124             :   void setIsa(unsigned isa) {
     125             :     assert(isa <= UINT8_MAX);
     126      421768 :     Isa = isa;
     127             :   }
     128             : 
     129             :   /// \brief Set the Discriminator of this MCDwarfLoc.
     130             :   void setDiscriminator(unsigned discriminator) {
     131      421768 :     Discriminator = discriminator;
     132             :   }
     133             : };
     134             : 
     135             : /// \brief Instances of this class represent the line information for
     136             : /// the dwarf line table entries.  Which is created after a machine
     137             : /// instruction is assembled and uses an address from a temporary label
     138             : /// created at the current address in the current section and the info from
     139             : /// the last .loc directive seen as stored in the context.
     140             : class MCDwarfLineEntry : public MCDwarfLoc {
     141             :   MCSymbol *Label;
     142             : 
     143             : private:
     144             :   // Allow the default copy constructor and assignment operator to be used
     145             :   // for an MCDwarfLineEntry object.
     146             : 
     147             : public:
     148             :   // Constructor to create an MCDwarfLineEntry given a symbol and the dwarf loc.
     149             :   MCDwarfLineEntry(MCSymbol *label, const MCDwarfLoc loc)
     150      420574 :       : MCDwarfLoc(loc), Label(label) {}
     151             : 
     152             :   MCSymbol *getLabel() const { return Label; }
     153             : 
     154             :   // This is called when an instruction is assembled into the specified
     155             :   // section and if there is information from the last .loc directive that
     156             :   // has yet to have a line entry made for it is made.
     157             :   static void Make(MCObjectStreamer *MCOS, MCSection *Section);
     158             : };
     159             : 
     160             : /// \brief Instances of this class represent the line information for a compile
     161             : /// unit where machine instructions have been assembled after seeing .loc
     162             : /// directives.  This is the information used to build the dwarf line
     163             : /// table for a section.
     164        3184 : class MCLineSection {
     165             : public:
     166             :   // \brief Add an entry to this MCLineSection's line entries.
     167             :   void addLineEntry(const MCDwarfLineEntry &LineEntry, MCSection *Sec) {
     168      420574 :     MCLineDivisions[Sec].push_back(LineEntry);
     169             :   }
     170             : 
     171             :   using MCDwarfLineEntryCollection = std::vector<MCDwarfLineEntry>;
     172             :   using iterator = MCDwarfLineEntryCollection::iterator;
     173             :   using const_iterator = MCDwarfLineEntryCollection::const_iterator;
     174             :   using MCLineDivisionMap = MapVector<MCSection *, MCDwarfLineEntryCollection>;
     175             : 
     176             : private:
     177             :   // A collection of MCDwarfLineEntry for each section.
     178             :   MCLineDivisionMap MCLineDivisions;
     179             : 
     180             : public:
     181             :   // Returns the collection of MCDwarfLineEntry for a given Compile Unit ID.
     182             :   const MCLineDivisionMap &getMCLineEntries() const {
     183             :     return MCLineDivisions;
     184             :   }
     185             : };
     186             : 
     187        4170 : struct MCDwarfLineTableParams {
     188             :   /// First special line opcode - leave room for the standard opcodes.
     189             :   /// Note: If you want to change this, you'll have to update the
     190             :   /// "StandardOpcodeLengths" table that is emitted in
     191             :   /// \c Emit().
     192             :   uint8_t DWARF2LineOpcodeBase = 13;
     193             :   /// Minimum line offset in a special line info. opcode.  The value
     194             :   /// -5 was chosen to give a reasonable range of values.
     195             :   int8_t DWARF2LineBase = -5;
     196             :   /// Range of line offsets in a special line info. opcode.
     197             :   uint8_t DWARF2LineRange = 14;
     198             : };
     199             : 
     200       51522 : struct MCDwarfLineTableHeader {
     201             :   MCSymbol *Label = nullptr;
     202             :   SmallVector<std::string, 3> MCDwarfDirs;
     203             :   SmallVector<MCDwarfFile, 3> MCDwarfFiles;
     204             :   StringMap<unsigned> SourceIdMap;
     205             :   StringRef CompilationDir;
     206             : 
     207       86350 :   MCDwarfLineTableHeader() = default;
     208             : 
     209             :   unsigned getFile(StringRef &Directory, StringRef &FileName,
     210             :                    unsigned FileNumber = 0);
     211             :   std::pair<MCSymbol *, MCSymbol *> Emit(MCStreamer *MCOS,
     212             :                                          MCDwarfLineTableParams Params) const;
     213             :   std::pair<MCSymbol *, MCSymbol *>
     214             :   Emit(MCStreamer *MCOS, MCDwarfLineTableParams Params,
     215             :        ArrayRef<char> SpecialOpcodeLengths) const;
     216             : };
     217             : 
     218       49326 : class MCDwarfDwoLineTable {
     219             :   MCDwarfLineTableHeader Header;
     220             : 
     221             : public:
     222             :   void setCompilationDir(StringRef CompilationDir) {
     223          19 :     Header.CompilationDir = CompilationDir;
     224             :   }
     225             : 
     226             :   unsigned getFile(StringRef Directory, StringRef FileName) {
     227          31 :     return Header.getFile(Directory, FileName);
     228             :   }
     229             : 
     230             :   void Emit(MCStreamer &MCOS, MCDwarfLineTableParams Params) const;
     231             : };
     232             : 
     233        3980 : class MCDwarfLineTable {
     234             :   MCDwarfLineTableHeader Header;
     235             :   MCLineSection MCLineSections;
     236             : 
     237             : public:
     238             :   // This emits the Dwarf file and the line tables for all Compile Units.
     239             :   static void Emit(MCObjectStreamer *MCOS, MCDwarfLineTableParams Params);
     240             : 
     241             :   // This emits the Dwarf file and the line tables for a given Compile Unit.
     242             :   void EmitCU(MCObjectStreamer *MCOS, MCDwarfLineTableParams Params) const;
     243             : 
     244             :   unsigned getFile(StringRef &Directory, StringRef &FileName,
     245             :                    unsigned FileNumber = 0);
     246             : 
     247             :   MCSymbol *getLabel() const {
     248             :     return Header.Label;
     249             :   }
     250             : 
     251             :   void setLabel(MCSymbol *Label) {
     252         754 :     Header.Label = Label;
     253             :   }
     254             : 
     255             :   void setCompilationDir(StringRef CompilationDir) {
     256         720 :     Header.CompilationDir = CompilationDir;
     257             :   }
     258             : 
     259             :   const SmallVectorImpl<std::string> &getMCDwarfDirs() const {
     260             :     return Header.MCDwarfDirs;
     261             :   }
     262             : 
     263             :   SmallVectorImpl<std::string> &getMCDwarfDirs() {
     264             :     return Header.MCDwarfDirs;
     265             :   }
     266             : 
     267             :   const SmallVectorImpl<MCDwarfFile> &getMCDwarfFiles() const {
     268             :     return Header.MCDwarfFiles;
     269             :   }
     270             : 
     271             :   SmallVectorImpl<MCDwarfFile> &getMCDwarfFiles() {
     272             :     return Header.MCDwarfFiles;
     273             :   }
     274             : 
     275             :   const MCLineSection &getMCLineSections() const {
     276             :     return MCLineSections;
     277             :   }
     278             :   MCLineSection &getMCLineSections() {
     279             :     return MCLineSections;
     280             :   }
     281             : };
     282             : 
     283             : class MCDwarfLineAddr {
     284             : public:
     285             :   /// Utility function to encode a Dwarf pair of LineDelta and AddrDeltas.
     286             :   static void Encode(MCContext &Context, MCDwarfLineTableParams Params,
     287             :                      int64_t LineDelta, uint64_t AddrDelta, raw_ostream &OS);
     288             : 
     289             :   /// Utility function to emit the encoding to a streamer.
     290             :   static void Emit(MCStreamer *MCOS, MCDwarfLineTableParams Params,
     291             :                    int64_t LineDelta, uint64_t AddrDelta);
     292             : };
     293             : 
     294             : class MCGenDwarfInfo {
     295             : public:
     296             :   //
     297             :   // When generating dwarf for assembly source files this emits the Dwarf
     298             :   // sections.
     299             :   //
     300             :   static void Emit(MCStreamer *MCOS);
     301             : };
     302             : 
     303             : // When generating dwarf for assembly source files this is the info that is
     304             : // needed to be gathered for each symbol that will have a dwarf label.
     305             : class MCGenDwarfLabelEntry {
     306             : private:
     307             :   // Name of the symbol without a leading underbar, if any.
     308             :   StringRef Name;
     309             :   // The dwarf file number this symbol is in.
     310             :   unsigned FileNumber;
     311             :   // The line number this symbol is at.
     312             :   unsigned LineNumber;
     313             :   // The low_pc for the dwarf label is taken from this symbol.
     314             :   MCSymbol *Label;
     315             : 
     316             : public:
     317             :   MCGenDwarfLabelEntry(StringRef name, unsigned fileNumber, unsigned lineNumber,
     318             :                        MCSymbol *label)
     319          40 :       : Name(name), FileNumber(fileNumber), LineNumber(lineNumber),
     320          40 :         Label(label) {}
     321             : 
     322             :   StringRef getName() const { return Name; }
     323             :   unsigned getFileNumber() const { return FileNumber; }
     324             :   unsigned getLineNumber() const { return LineNumber; }
     325             :   MCSymbol *getLabel() const { return Label; }
     326             : 
     327             :   // This is called when label is created when we are generating dwarf for
     328             :   // assembly source files.
     329             :   static void Make(MCSymbol *Symbol, MCStreamer *MCOS, SourceMgr &SrcMgr,
     330             :                    SMLoc &Loc);
     331             : };
     332             : 
     333     4867710 : class MCCFIInstruction {
     334             : public:
     335             :   enum OpType {
     336             :     OpSameValue,
     337             :     OpRememberState,
     338             :     OpRestoreState,
     339             :     OpOffset,
     340             :     OpDefCfaRegister,
     341             :     OpDefCfaOffset,
     342             :     OpDefCfa,
     343             :     OpRelOffset,
     344             :     OpAdjustCfaOffset,
     345             :     OpEscape,
     346             :     OpRestore,
     347             :     OpUndefined,
     348             :     OpRegister,
     349             :     OpWindowSave,
     350             :     OpGnuArgsSize
     351             :   };
     352             : 
     353             : private:
     354             :   OpType Operation;
     355             :   MCSymbol *Label;
     356             :   unsigned Register;
     357             :   union {
     358             :     int Offset;
     359             :     unsigned Register2;
     360             :   };
     361             :   std::vector<char> Values;
     362             : 
     363             :   MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R, int O, StringRef V)
     364             :       : Operation(Op), Label(L), Register(R), Offset(O),
     365     1464517 :         Values(V.begin(), V.end()) {
     366             :     assert(Op != OpRegister);
     367             :   }
     368             : 
     369             :   MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R1, unsigned R2)
     370        1724 :       : Operation(Op), Label(L), Register(R1), Register2(R2) {
     371             :     assert(Op == OpRegister);
     372             :   }
     373             : 
     374             : public:
     375             :   /// \brief .cfi_def_cfa defines a rule for computing CFA as: take address from
     376             :   /// Register and add Offset to it.
     377             :   static MCCFIInstruction createDefCfa(MCSymbol *L, unsigned Register,
     378             :                                        int Offset) {
     379       66282 :     return MCCFIInstruction(OpDefCfa, L, Register, -Offset, "");
     380             :   }
     381             : 
     382             :   /// \brief .cfi_def_cfa_register modifies a rule for computing CFA. From now
     383             :   /// on Register will be used instead of the old one. Offset remains the same.
     384             :   static MCCFIInstruction createDefCfaRegister(MCSymbol *L, unsigned Register) {
     385       10390 :     return MCCFIInstruction(OpDefCfaRegister, L, Register, 0, "");
     386             :   }
     387             : 
     388             :   /// \brief .cfi_def_cfa_offset modifies a rule for computing CFA. Register
     389             :   /// remains the same, but offset is new. Note that it is the absolute offset
     390             :   /// that will be added to a defined register to the compute CFA address.
     391             :   static MCCFIInstruction createDefCfaOffset(MCSymbol *L, int Offset) {
     392      127240 :     return MCCFIInstruction(OpDefCfaOffset, L, 0, -Offset, "");
     393             :   }
     394             : 
     395             :   /// \brief .cfi_adjust_cfa_offset Same as .cfi_def_cfa_offset, but
     396             :   /// Offset is a relative value that is added/subtracted from the previous
     397             :   /// offset.
     398             :   static MCCFIInstruction createAdjustCfaOffset(MCSymbol *L, int Adjustment) {
     399      553310 :     return MCCFIInstruction(OpAdjustCfaOffset, L, 0, Adjustment, "");
     400             :   }
     401             : 
     402             :   /// \brief .cfi_offset Previous value of Register is saved at offset Offset
     403             :   /// from CFA.
     404             :   static MCCFIInstruction createOffset(MCSymbol *L, unsigned Register,
     405             :                                        int Offset) {
     406      184888 :     return MCCFIInstruction(OpOffset, L, Register, Offset, "");
     407             :   }
     408             : 
     409             :   /// \brief .cfi_rel_offset Previous value of Register is saved at offset
     410             :   /// Offset from the current CFA register. This is transformed to .cfi_offset
     411             :   /// using the known displacement of the CFA register from the CFA.
     412             :   static MCCFIInstruction createRelOffset(MCSymbol *L, unsigned Register,
     413             :                                           int Offset) {
     414          46 :     return MCCFIInstruction(OpRelOffset, L, Register, Offset, "");
     415             :   }
     416             : 
     417             :   /// \brief .cfi_register Previous value of Register1 is saved in
     418             :   /// register Register2.
     419             :   static MCCFIInstruction createRegister(MCSymbol *L, unsigned Register1,
     420             :                                          unsigned Register2) {
     421         862 :     return MCCFIInstruction(OpRegister, L, Register1, Register2);
     422             :   }
     423             : 
     424             :   /// \brief .cfi_window_save SPARC register window is saved.
     425             :   static MCCFIInstruction createWindowSave(MCSymbol *L) {
     426        1722 :     return MCCFIInstruction(OpWindowSave, L, 0, 0, "");
     427             :   }
     428             : 
     429             :   /// \brief .cfi_restore says that the rule for Register is now the same as it
     430             :   /// was at the beginning of the function, after all initial instructions added
     431             :   /// by .cfi_startproc were executed.
     432             :   static MCCFIInstruction createRestore(MCSymbol *L, unsigned Register) {
     433           2 :     return MCCFIInstruction(OpRestore, L, Register, 0, "");
     434             :   }
     435             : 
     436             :   /// \brief .cfi_undefined From now on the previous value of Register can't be
     437             :   /// restored anymore.
     438             :   static MCCFIInstruction createUndefined(MCSymbol *L, unsigned Register) {
     439           2 :     return MCCFIInstruction(OpUndefined, L, Register, 0, "");
     440             :   }
     441             : 
     442             :   /// \brief .cfi_same_value Current value of Register is the same as in the
     443             :   /// previous frame. I.e., no restoration is needed.
     444             :   static MCCFIInstruction createSameValue(MCSymbol *L, unsigned Register) {
     445         224 :     return MCCFIInstruction(OpSameValue, L, Register, 0, "");
     446             :   }
     447             : 
     448             :   /// \brief .cfi_remember_state Save all current rules for all registers.
     449             :   static MCCFIInstruction createRememberState(MCSymbol *L) {
     450          60 :     return MCCFIInstruction(OpRememberState, L, 0, 0, "");
     451             :   }
     452             : 
     453             :   /// \brief .cfi_restore_state Restore the previously saved state.
     454             :   static MCCFIInstruction createRestoreState(MCSymbol *L) {
     455          60 :     return MCCFIInstruction(OpRestoreState, L, 0, 0, "");
     456             :   }
     457             : 
     458             :   /// \brief .cfi_escape Allows the user to add arbitrary bytes to the unwind
     459             :   /// info.
     460             :   static MCCFIInstruction createEscape(MCSymbol *L, StringRef Vals) {
     461           1 :     return MCCFIInstruction(OpEscape, L, 0, 0, Vals);
     462             :   }
     463             : 
     464             :   /// \brief A special wrapper for .cfi_escape that indicates GNU_ARGS_SIZE
     465             :   static MCCFIInstruction createGnuArgsSize(MCSymbol *L, int Size) {
     466       32116 :     return MCCFIInstruction(OpGnuArgsSize, L, 0, Size, "");
     467             :   }
     468             : 
     469             :   OpType getOperation() const { return Operation; }
     470             :   MCSymbol *getLabel() const { return Label; }
     471             : 
     472             :   unsigned getRegister() const {
     473             :     assert(Operation == OpDefCfa || Operation == OpOffset ||
     474             :            Operation == OpRestore || Operation == OpUndefined ||
     475             :            Operation == OpSameValue || Operation == OpDefCfaRegister ||
     476             :            Operation == OpRelOffset || Operation == OpRegister);
     477             :     return Register;
     478             :   }
     479             : 
     480             :   unsigned getRegister2() const {
     481             :     assert(Operation == OpRegister);
     482             :     return Register2;
     483             :   }
     484             : 
     485             :   int getOffset() const {
     486             :     assert(Operation == OpDefCfa || Operation == OpOffset ||
     487             :            Operation == OpRelOffset || Operation == OpDefCfaOffset ||
     488             :            Operation == OpAdjustCfaOffset || Operation == OpGnuArgsSize);
     489             :     return Offset;
     490             :   }
     491             : 
     492             :   StringRef getValues() const {
     493             :     assert(Operation == OpEscape);
     494           2 :     return StringRef(&Values[0], Values.size());
     495             :   }
     496             : };
     497             : 
     498      538177 : struct MCDwarfFrameInfo {
     499      158934 :   MCDwarfFrameInfo() = default;
     500             : 
     501             :   MCSymbol *Begin = nullptr;
     502             :   MCSymbol *End = nullptr;
     503             :   const MCSymbol *Personality = nullptr;
     504             :   const MCSymbol *Lsda = nullptr;
     505             :   std::vector<MCCFIInstruction> Instructions;
     506             :   unsigned CurrentCfaRegister = 0;
     507             :   unsigned PersonalityEncoding = 0;
     508             :   unsigned LsdaEncoding = 0;
     509             :   uint32_t CompactUnwindEncoding = 0;
     510             :   bool IsSignalFrame = false;
     511             :   bool IsSimple = false;
     512             :   unsigned RAReg = static_cast<unsigned>(INT_MAX);
     513             : };
     514             : 
     515             : class MCDwarfFrameEmitter {
     516             : public:
     517             :   //
     518             :   // This emits the frame info section.
     519             :   //
     520             :   static void Emit(MCObjectStreamer &streamer, MCAsmBackend *MAB, bool isEH);
     521             :   static void EmitAdvanceLoc(MCObjectStreamer &Streamer, uint64_t AddrDelta);
     522             :   static void EncodeAdvanceLoc(MCContext &Context, uint64_t AddrDelta,
     523             :                                raw_ostream &OS);
     524             : };
     525             : 
     526             : } // end namespace llvm
     527             : 
     528             : #endif // LLVM_MC_MCDWARF_H

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