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      1 //===-- llvm/MC/MCAsmInfo.h - Asm info --------------------------*- 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 a class to be used as the basis for target specific
     11 // asm writers.  This class primarily takes care of global printing constants,
     12 // which are used in very similar ways across all targets.
     13 //
     14 //===----------------------------------------------------------------------===//
     15 
     16 #ifndef LLVM_MC_MCASMINFO_H
     17 #define LLVM_MC_MCASMINFO_H
     18 
     19 #include "llvm/MC/MCDirectives.h"
     20 #include "llvm/MC/MachineLocation.h"
     21 #include <cassert>
     22 #include <vector>
     23 
     24 namespace llvm {
     25   class MCExpr;
     26   class MCSection;
     27   class MCStreamer;
     28   class MCSymbol;
     29   class MCContext;
     30 
     31   namespace ExceptionHandling {
     32     enum ExceptionsType { None, DwarfCFI, SjLj, ARM, Win64 };
     33   }
     34 
     35   namespace LCOMM {
     36     enum LCOMMType { NoAlignment, ByteAlignment, Log2Alignment };
     37   }
     38 
     39   /// MCAsmInfo - This class is intended to be used as a base class for asm
     40   /// properties and features specific to the target.
     41   class MCAsmInfo {
     42   protected:
     43     //===------------------------------------------------------------------===//
     44     // Properties to be set by the target writer, used to configure asm printer.
     45     //
     46 
     47     /// PointerSize - Pointer size in bytes.
     48     ///               Default is 4.
     49     unsigned PointerSize;
     50 
     51     /// CalleeSaveStackSlotSize - Size of the stack slot reserved for
     52     ///                           callee-saved registers, in bytes.
     53     ///                           Default is same as pointer size.
     54     unsigned CalleeSaveStackSlotSize;
     55 
     56     /// IsLittleEndian - True if target is little endian.
     57     ///                  Default is true.
     58     bool IsLittleEndian;
     59 
     60     /// StackGrowsUp - True if target stack grow up.
     61     ///                Default is false.
     62     bool StackGrowsUp;
     63 
     64     /// HasSubsectionsViaSymbols - True if this target has the MachO
     65     /// .subsections_via_symbols directive.
     66     bool HasSubsectionsViaSymbols;           // Default is false.
     67 
     68     /// HasMachoZeroFillDirective - True if this is a MachO target that supports
     69     /// the macho-specific .zerofill directive for emitting BSS Symbols.
     70     bool HasMachoZeroFillDirective;               // Default is false.
     71 
     72     /// HasMachoTBSSDirective - True if this is a MachO target that supports
     73     /// the macho-specific .tbss directive for emitting thread local BSS Symbols
     74     bool HasMachoTBSSDirective;                 // Default is false.
     75 
     76     /// HasStaticCtorDtorReferenceInStaticMode - True if the compiler should
     77     /// emit a ".reference .constructors_used" or ".reference .destructors_used"
     78     /// directive after the a static ctor/dtor list.  This directive is only
     79     /// emitted in Static relocation model.
     80     bool HasStaticCtorDtorReferenceInStaticMode;  // Default is false.
     81 
     82     /// LinkerRequiresNonEmptyDwarfLines - True if the linker has a bug and
     83     /// requires that the debug_line section be of a minimum size. In practice
     84     /// such a linker requires a non empty line sequence if a file is present.
     85     bool LinkerRequiresNonEmptyDwarfLines; // Default to false.
     86 
     87     /// MaxInstLength - This is the maximum possible length of an instruction,
     88     /// which is needed to compute the size of an inline asm.
     89     unsigned MaxInstLength;                  // Defaults to 4.
     90 
     91     /// PCSymbol - The symbol used to represent the current PC.  Used in PC
     92     /// relative expressions.
     93     const char *PCSymbol;                    // Defaults to "$".
     94 
     95     /// SeparatorString - This string, if specified, is used to separate
     96     /// instructions from each other when on the same line.
     97     const char *SeparatorString;             // Defaults to ';'
     98 
     99     /// CommentColumn - This indicates the comment num (zero-based) at
    100     /// which asm comments should be printed.
    101     unsigned CommentColumn;                  // Defaults to 40
    102 
    103     /// CommentString - This indicates the comment character used by the
    104     /// assembler.
    105     const char *CommentString;               // Defaults to "#"
    106 
    107     /// LabelSuffix - This is appended to emitted labels.
    108     const char *LabelSuffix;                 // Defaults to ":"
    109 
    110     /// LabelSuffix - This is appended to emitted labels.
    111     const char *DebugLabelSuffix;                 // Defaults to ":"
    112 
    113     /// GlobalPrefix - If this is set to a non-empty string, it is prepended
    114     /// onto all global symbols.  This is often used for "_" or ".".
    115     const char *GlobalPrefix;                // Defaults to ""
    116 
    117     /// PrivateGlobalPrefix - This prefix is used for globals like constant
    118     /// pool entries that are completely private to the .s file and should not
    119     /// have names in the .o file.  This is often "." or "L".
    120     const char *PrivateGlobalPrefix;         // Defaults to "."
    121 
    122     /// LinkerPrivateGlobalPrefix - This prefix is used for symbols that should
    123     /// be passed through the assembler but be removed by the linker.  This
    124     /// is "l" on Darwin, currently used for some ObjC metadata.
    125     const char *LinkerPrivateGlobalPrefix;   // Defaults to ""
    126 
    127     /// InlineAsmStart/End - If these are nonempty, they contain a directive to
    128     /// emit before and after an inline assembly statement.
    129     const char *InlineAsmStart;              // Defaults to "#APP\n"
    130     const char *InlineAsmEnd;                // Defaults to "#NO_APP\n"
    131 
    132     /// Code16Directive, Code32Directive, Code64Directive - These are assembly
    133     /// directives that tells the assembler to interpret the following
    134     /// instructions differently.
    135     const char *Code16Directive;             // Defaults to ".code16"
    136     const char *Code32Directive;             // Defaults to ".code32"
    137     const char *Code64Directive;             // Defaults to ".code64"
    138 
    139     /// AssemblerDialect - Which dialect of an assembler variant to use.
    140     unsigned AssemblerDialect;               // Defaults to 0
    141 
    142     /// AllowQuotesInName - This is true if the assembler allows for complex
    143     /// symbol names to be surrounded in quotes.  This defaults to false.
    144     bool AllowQuotesInName;
    145 
    146     /// AllowNameToStartWithDigit - This is true if the assembler allows symbol
    147     /// names to start with a digit (e.g., "0x0021").  This defaults to false.
    148     bool AllowNameToStartWithDigit;
    149 
    150     /// AllowPeriodsInName - This is true if the assembler allows periods in
    151     /// symbol names.  This defaults to true.
    152     bool AllowPeriodsInName;
    153 
    154     /// AllowUTF8 - This is true if the assembler accepts UTF-8 input.
    155     // FIXME: Make this a more general encoding setting?
    156     bool AllowUTF8;
    157 
    158     /// UseDataRegionDirectives - This is true if data region markers should
    159     /// be printed as ".data_region/.end_data_region" directives. If false,
    160     /// use "$d/$a" labels instead.
    161     bool UseDataRegionDirectives;
    162 
    163     //===--- Data Emission Directives -------------------------------------===//
    164 
    165     /// ZeroDirective - this should be set to the directive used to get some
    166     /// number of zero bytes emitted to the current section.  Common cases are
    167     /// "\t.zero\t" and "\t.space\t".  If this is set to null, the
    168     /// Data*bitsDirective's will be used to emit zero bytes.
    169     const char *ZeroDirective;               // Defaults to "\t.zero\t"
    170 
    171     /// AsciiDirective - This directive allows emission of an ascii string with
    172     /// the standard C escape characters embedded into it.
    173     const char *AsciiDirective;              // Defaults to "\t.ascii\t"
    174 
    175     /// AscizDirective - If not null, this allows for special handling of
    176     /// zero terminated strings on this target.  This is commonly supported as
    177     /// ".asciz".  If a target doesn't support this, it can be set to null.
    178     const char *AscizDirective;              // Defaults to "\t.asciz\t"
    179 
    180     /// DataDirectives - These directives are used to output some unit of
    181     /// integer data to the current section.  If a data directive is set to
    182     /// null, smaller data directives will be used to emit the large sizes.
    183     const char *Data8bitsDirective;          // Defaults to "\t.byte\t"
    184     const char *Data16bitsDirective;         // Defaults to "\t.short\t"
    185     const char *Data32bitsDirective;         // Defaults to "\t.long\t"
    186     const char *Data64bitsDirective;         // Defaults to "\t.quad\t"
    187 
    188     /// GPRel64Directive - if non-null, a directive that is used to emit a word
    189     /// which should be relocated as a 64-bit GP-relative offset, e.g. .gpdword
    190     /// on Mips.
    191     const char *GPRel64Directive;            // Defaults to NULL.
    192 
    193     /// GPRel32Directive - if non-null, a directive that is used to emit a word
    194     /// which should be relocated as a 32-bit GP-relative offset, e.g. .gpword
    195     /// on Mips or .gprel32 on Alpha.
    196     const char *GPRel32Directive;            // Defaults to NULL.
    197 
    198     /// getDataASDirective - Return the directive that should be used to emit
    199     /// data of the specified size to the specified numeric address space.
    200     virtual const char *getDataASDirective(unsigned Size, unsigned AS) const {
    201       assert(AS != 0 && "Don't know the directives for default addr space");
    202       return 0;
    203     }
    204 
    205     /// SunStyleELFSectionSwitchSyntax - This is true if this target uses "Sun
    206     /// Style" syntax for section switching ("#alloc,#write" etc) instead of the
    207     /// normal ELF syntax (,"a,w") in .section directives.
    208     bool SunStyleELFSectionSwitchSyntax;     // Defaults to false.
    209 
    210     /// UsesELFSectionDirectiveForBSS - This is true if this target uses ELF
    211     /// '.section' directive before the '.bss' one. It's used for PPC/Linux
    212     /// which doesn't support the '.bss' directive only.
    213     bool UsesELFSectionDirectiveForBSS;      // Defaults to false.
    214 
    215     /// HasMicrosoftFastStdCallMangling - True if this target uses microsoft
    216     /// style mangling for functions with X86_StdCall/X86_FastCall calling
    217     /// convention.
    218     bool HasMicrosoftFastStdCallMangling;    // Defaults to false.
    219 
    220     //===--- Alignment Information ----------------------------------------===//
    221 
    222     /// AlignDirective - The directive used to emit round up to an alignment
    223     /// boundary.
    224     ///
    225     const char *AlignDirective;              // Defaults to "\t.align\t"
    226 
    227     /// AlignmentIsInBytes - If this is true (the default) then the asmprinter
    228     /// emits ".align N" directives, where N is the number of bytes to align to.
    229     /// Otherwise, it emits ".align log2(N)", e.g. 3 to align to an 8 byte
    230     /// boundary.
    231     bool AlignmentIsInBytes;                 // Defaults to true
    232 
    233     /// TextAlignFillValue - If non-zero, this is used to fill the executable
    234     /// space created as the result of a alignment directive.
    235     unsigned TextAlignFillValue;             // Defaults to 0
    236 
    237     //===--- Global Variable Emission Directives --------------------------===//
    238 
    239     /// GlobalDirective - This is the directive used to declare a global entity.
    240     ///
    241     const char *GlobalDirective;             // Defaults to NULL.
    242 
    243     /// ExternDirective - This is the directive used to declare external
    244     /// globals.
    245     ///
    246     const char *ExternDirective;             // Defaults to NULL.
    247 
    248     /// HasSetDirective - True if the assembler supports the .set directive.
    249     bool HasSetDirective;                    // Defaults to true.
    250 
    251     /// HasAggressiveSymbolFolding - False if the assembler requires that we use
    252     /// Lc = a - b
    253     /// .long Lc
    254     /// instead of
    255     /// .long a - b
    256     bool HasAggressiveSymbolFolding;           // Defaults to true.
    257 
    258     /// COMMDirectiveAlignmentIsInBytes - True is .comm's and .lcomms optional
    259     /// alignment is to be specified in bytes instead of log2(n).
    260     bool COMMDirectiveAlignmentIsInBytes;    // Defaults to true;
    261 
    262     /// LCOMMDirectiveAlignment - Describes if the .lcomm directive for the
    263     /// target supports an alignment argument and how it is interpreted.
    264     LCOMM::LCOMMType LCOMMDirectiveAlignmentType; // Defaults to NoAlignment.
    265 
    266     /// HasDotTypeDotSizeDirective - True if the target has .type and .size
    267     /// directives, this is true for most ELF targets.
    268     bool HasDotTypeDotSizeDirective;         // Defaults to true.
    269 
    270     /// HasSingleParameterDotFile - True if the target has a single parameter
    271     /// .file directive, this is true for ELF targets.
    272     bool HasSingleParameterDotFile;          // Defaults to true.
    273 
    274     /// HasNoDeadStrip - True if this target supports the MachO .no_dead_strip
    275     /// directive.
    276     bool HasNoDeadStrip;                     // Defaults to false.
    277 
    278     /// HasSymbolResolver - True if this target supports the MachO
    279     /// .symbol_resolver directive.
    280     bool HasSymbolResolver;                     // Defaults to false.
    281 
    282     /// WeakRefDirective - This directive, if non-null, is used to declare a
    283     /// global as being a weak undefined symbol.
    284     const char *WeakRefDirective;            // Defaults to NULL.
    285 
    286     /// WeakDefDirective - This directive, if non-null, is used to declare a
    287     /// global as being a weak defined symbol.
    288     const char *WeakDefDirective;            // Defaults to NULL.
    289 
    290     /// LinkOnceDirective - This directive, if non-null is used to declare a
    291     /// global as being a weak defined symbol.  This is used on cygwin/mingw.
    292     const char *LinkOnceDirective;           // Defaults to NULL.
    293 
    294     /// HiddenVisibilityAttr - This attribute, if not MCSA_Invalid, is used to
    295     /// declare a symbol as having hidden visibility.
    296     MCSymbolAttr HiddenVisibilityAttr;       // Defaults to MCSA_Hidden.
    297 
    298     /// HiddenDeclarationVisibilityAttr - This attribute, if not MCSA_Invalid,
    299     /// is used to declare an undefined symbol as having hidden visibility.
    300     MCSymbolAttr HiddenDeclarationVisibilityAttr;   // Defaults to MCSA_Hidden.
    301 
    302 
    303     /// ProtectedVisibilityAttr - This attribute, if not MCSA_Invalid, is used
    304     /// to declare a symbol as having protected visibility.
    305     MCSymbolAttr ProtectedVisibilityAttr;    // Defaults to MCSA_Protected
    306 
    307     //===--- Dwarf Emission Directives -----------------------------------===//
    308 
    309     /// HasLEB128 - True if target asm supports leb128 directives.
    310     bool HasLEB128;                          // Defaults to false.
    311 
    312     /// SupportsDebugInformation - True if target supports emission of debugging
    313     /// information.
    314     bool SupportsDebugInformation;           // Defaults to false.
    315 
    316     /// SupportsExceptionHandling - True if target supports exception handling.
    317     ExceptionHandling::ExceptionsType ExceptionsType; // Defaults to None
    318 
    319     /// DwarfUsesInlineInfoSection - True if DwarfDebugInlineSection is used to
    320     /// encode inline subroutine information.
    321     bool DwarfUsesInlineInfoSection;         // Defaults to false.
    322 
    323     /// DwarfSectionOffsetDirective - Special section offset directive.
    324     const char* DwarfSectionOffsetDirective; // Defaults to NULL
    325 
    326     /// DwarfUsesRelocationsAcrossSections - True if Dwarf2 output generally
    327     /// uses relocations for references to other .debug_* sections.
    328     bool DwarfUsesRelocationsAcrossSections;
    329 
    330     /// DwarfRegNumForCFI - True if dwarf register numbers are printed
    331     /// instead of symbolic register names in .cfi_* directives.
    332     bool DwarfRegNumForCFI;  // Defaults to false;
    333 
    334     //===--- Prologue State ----------------------------------------------===//
    335 
    336     std::vector<MachineMove> InitialFrameState;
    337 
    338   public:
    339     explicit MCAsmInfo();
    340     virtual ~MCAsmInfo();
    341 
    342     // FIXME: move these methods to DwarfPrinter when the JIT stops using them.
    343     static unsigned getSLEB128Size(int Value);
    344     static unsigned getULEB128Size(unsigned Value);
    345 
    346     /// getPointerSize - Get the pointer size in bytes.
    347     unsigned getPointerSize() const {
    348       return PointerSize;
    349     }
    350 
    351     /// getCalleeSaveStackSlotSize - Get the callee-saved register stack slot
    352     /// size in bytes.
    353     unsigned getCalleeSaveStackSlotSize() const {
    354       return CalleeSaveStackSlotSize;
    355     }
    356 
    357     /// isLittleEndian - True if the target is little endian.
    358     bool isLittleEndian() const {
    359       return IsLittleEndian;
    360     }
    361 
    362     /// isStackGrowthDirectionUp - True if target stack grow up.
    363     bool isStackGrowthDirectionUp() const {
    364       return StackGrowsUp;
    365     }
    366 
    367     bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
    368 
    369     // Data directive accessors.
    370     //
    371     const char *getData8bitsDirective(unsigned AS = 0) const {
    372       return AS == 0 ? Data8bitsDirective : getDataASDirective(8, AS);
    373     }
    374     const char *getData16bitsDirective(unsigned AS = 0) const {
    375       return AS == 0 ? Data16bitsDirective : getDataASDirective(16, AS);
    376     }
    377     const char *getData32bitsDirective(unsigned AS = 0) const {
    378       return AS == 0 ? Data32bitsDirective : getDataASDirective(32, AS);
    379     }
    380     const char *getData64bitsDirective(unsigned AS = 0) const {
    381       return AS == 0 ? Data64bitsDirective : getDataASDirective(64, AS);
    382     }
    383     const char *getGPRel64Directive() const { return GPRel64Directive; }
    384     const char *getGPRel32Directive() const { return GPRel32Directive; }
    385 
    386     /// getNonexecutableStackSection - Targets can implement this method to
    387     /// specify a section to switch to if the translation unit doesn't have any
    388     /// trampolines that require an executable stack.
    389     virtual const MCSection *getNonexecutableStackSection(MCContext &Ctx) const{
    390       return 0;
    391     }
    392 
    393     virtual const MCExpr *
    394     getExprForPersonalitySymbol(const MCSymbol *Sym,
    395                                 unsigned Encoding,
    396                                 MCStreamer &Streamer) const;
    397 
    398     const MCExpr *
    399     getExprForFDESymbol(const MCSymbol *Sym,
    400                         unsigned Encoding,
    401                         MCStreamer &Streamer) const;
    402 
    403     bool usesSunStyleELFSectionSwitchSyntax() const {
    404       return SunStyleELFSectionSwitchSyntax;
    405     }
    406 
    407     bool usesELFSectionDirectiveForBSS() const {
    408       return UsesELFSectionDirectiveForBSS;
    409     }
    410 
    411     bool hasMicrosoftFastStdCallMangling() const {
    412       return HasMicrosoftFastStdCallMangling;
    413     }
    414 
    415     // Accessors.
    416     //
    417     bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }
    418     bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; }
    419     bool hasStaticCtorDtorReferenceInStaticMode() const {
    420       return HasStaticCtorDtorReferenceInStaticMode;
    421     }
    422     bool getLinkerRequiresNonEmptyDwarfLines() const {
    423       return LinkerRequiresNonEmptyDwarfLines;
    424     }
    425     unsigned getMaxInstLength() const {
    426       return MaxInstLength;
    427     }
    428     const char *getPCSymbol() const {
    429       return PCSymbol;
    430     }
    431     const char *getSeparatorString() const {
    432       return SeparatorString;
    433     }
    434     unsigned getCommentColumn() const {
    435       return CommentColumn;
    436     }
    437     const char *getCommentString() const {
    438       return CommentString;
    439     }
    440     const char *getLabelSuffix() const {
    441       return LabelSuffix;
    442     }
    443 
    444     const char *getDebugLabelSuffix() const {
    445       return DebugLabelSuffix;
    446     }
    447 
    448     const char *getGlobalPrefix() const {
    449       return GlobalPrefix;
    450     }
    451     const char *getPrivateGlobalPrefix() const {
    452       return PrivateGlobalPrefix;
    453     }
    454     const char *getLinkerPrivateGlobalPrefix() const {
    455       return LinkerPrivateGlobalPrefix;
    456     }
    457     const char *getInlineAsmStart() const {
    458       return InlineAsmStart;
    459     }
    460     const char *getInlineAsmEnd() const {
    461       return InlineAsmEnd;
    462     }
    463     const char *getCode16Directive() const {
    464       return Code16Directive;
    465     }
    466     const char *getCode32Directive() const {
    467       return Code32Directive;
    468     }
    469     const char *getCode64Directive() const {
    470       return Code64Directive;
    471     }
    472     unsigned getAssemblerDialect() const {
    473       return AssemblerDialect;
    474     }
    475     bool doesAllowQuotesInName() const {
    476       return AllowQuotesInName;
    477     }
    478     bool doesAllowNameToStartWithDigit() const {
    479       return AllowNameToStartWithDigit;
    480     }
    481     bool doesAllowPeriodsInName() const {
    482       return AllowPeriodsInName;
    483     }
    484     bool doesAllowUTF8() const {
    485       return AllowUTF8;
    486     }
    487     bool doesSupportDataRegionDirectives() const {
    488       return UseDataRegionDirectives;
    489     }
    490     const char *getZeroDirective() const {
    491       return ZeroDirective;
    492     }
    493     const char *getAsciiDirective() const {
    494       return AsciiDirective;
    495     }
    496     const char *getAscizDirective() const {
    497       return AscizDirective;
    498     }
    499     const char *getAlignDirective() const {
    500       return AlignDirective;
    501     }
    502     bool getAlignmentIsInBytes() const {
    503       return AlignmentIsInBytes;
    504     }
    505     unsigned getTextAlignFillValue() const {
    506       return TextAlignFillValue;
    507     }
    508     const char *getGlobalDirective() const {
    509       return GlobalDirective;
    510     }
    511     const char *getExternDirective() const {
    512       return ExternDirective;
    513     }
    514     bool hasSetDirective() const { return HasSetDirective; }
    515     bool hasAggressiveSymbolFolding() const {
    516       return HasAggressiveSymbolFolding;
    517     }
    518     bool getCOMMDirectiveAlignmentIsInBytes() const {
    519       return COMMDirectiveAlignmentIsInBytes;
    520     }
    521     LCOMM::LCOMMType getLCOMMDirectiveAlignmentType() const {
    522       return LCOMMDirectiveAlignmentType;
    523     }
    524     bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;}
    525     bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }
    526     bool hasNoDeadStrip() const { return HasNoDeadStrip; }
    527     bool hasSymbolResolver() const { return HasSymbolResolver; }
    528     const char *getWeakRefDirective() const { return WeakRefDirective; }
    529     const char *getWeakDefDirective() const { return WeakDefDirective; }
    530     const char *getLinkOnceDirective() const { return LinkOnceDirective; }
    531 
    532     MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;}
    533     MCSymbolAttr getHiddenDeclarationVisibilityAttr() const {
    534       return HiddenDeclarationVisibilityAttr;
    535     }
    536     MCSymbolAttr getProtectedVisibilityAttr() const {
    537       return ProtectedVisibilityAttr;
    538     }
    539     bool hasLEB128() const {
    540       return HasLEB128;
    541     }
    542     bool doesSupportDebugInformation() const {
    543       return SupportsDebugInformation;
    544     }
    545     bool doesSupportExceptionHandling() const {
    546       return ExceptionsType != ExceptionHandling::None;
    547     }
    548     ExceptionHandling::ExceptionsType getExceptionHandlingType() const {
    549       return ExceptionsType;
    550     }
    551     bool isExceptionHandlingDwarf() const {
    552       return
    553         (ExceptionsType == ExceptionHandling::DwarfCFI ||
    554          ExceptionsType == ExceptionHandling::ARM ||
    555          ExceptionsType == ExceptionHandling::Win64);
    556     }
    557     bool doesDwarfUseInlineInfoSection() const {
    558       return DwarfUsesInlineInfoSection;
    559     }
    560     const char *getDwarfSectionOffsetDirective() const {
    561       return DwarfSectionOffsetDirective;
    562     }
    563     bool doesDwarfUseRelocationsAcrossSections() const {
    564       return DwarfUsesRelocationsAcrossSections;
    565     }
    566     bool useDwarfRegNumForCFI() const {
    567       return DwarfRegNumForCFI;
    568     }
    569 
    570     void addInitialFrameState(MCSymbol *label, const MachineLocation &D,
    571                               const MachineLocation &S) {
    572       InitialFrameState.push_back(MachineMove(label, D, S));
    573     }
    574     const std::vector<MachineMove> &getInitialFrameState() const {
    575       return InitialFrameState;
    576     }
    577   };
    578 }
    579 
    580 #endif
    581