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//===-- llvm/MC/MCAsmInfo.h - Asm info --------------------------*- 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

//

//===----------------------------------------------------------------------===//

//

// This file contains a class to be used as the basis for target specific

// asm writers.  This class primarily takes care of global printing constants,

// which are used in very similar ways across all targets.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_MC_MCASMINFO_H

#define LLVM_MC_MCASMINFO_H

#include "llvm/ADT/StringRef.h"

#include "llvm/MC/MCDirectives.h"

#include "llvm/MC/MCTargetOptions.h"

#include <vector>

namespace llvm {

class MCContext;

class MCCFIInstruction;

class MCExpr;

class MCSection;

class MCStreamer;

class MCSubtargetInfo;

class MCSymbol;

namespace WinEH {

enum class EncodingType {

  Invalid, /// Invalid

  Alpha,   /// Windows Alpha

  Alpha64, /// Windows AXP64

  ARM,     /// Windows NT (Windows on ARM)

  CE,      /// Windows CE ARM, PowerPC, SH3, SH4

  Itanium, /// Windows x64, Windows Itanium (IA-64)

  X86,     /// Windows x86, uses no CFI, just EH tables

  MIPS = Alpha,

};

} // end namespace WinEH

namespace LCOMM {

enum LCOMMType { NoAlignment, ByteAlignment, Log2Alignment };

} // end namespace LCOMM

/// This class is intended to be used as a base class for asm

/// properties and features specific to the target.

class MCAsmInfo {

public:

  /// Assembly character literal syntax types.

  enum AsmCharLiteralSyntax {

    ACLS_Unknown, /// Unknown; character literals not used by LLVM for this

                  /// target.

    ACLS_SingleQuotePrefix, /// The desired character is prefixed by a single

                            /// quote, e.g., `'A`.

  };

protected:

  //===------------------------------------------------------------------===//

  // Properties to be set by the target writer, used to configure asm printer.

  //

  /// Code pointer size in bytes.  Default is 4.

  unsigned CodePointerSize = 4;

  /// Size of the stack slot reserved for callee-saved registers, in bytes.

  /// Default is same as pointer size.

  unsigned CalleeSaveStackSlotSize = 4;

  /// True if target is little endian.  Default is true.

  bool IsLittleEndian = true;

  /// True if target stack grow up.  Default is false.

  bool StackGrowsUp = false;

  /// True if this target has the MachO .subsections_via_symbols directive.

  /// Default is false.

  bool HasSubsectionsViaSymbols = false;

  /// True if this is a MachO target that supports the macho-specific .zerofill

  /// directive for emitting BSS Symbols.  Default is false.

  bool HasMachoZeroFillDirective = false;

  /// True if this is a MachO target that supports the macho-specific .tbss

  /// directive for emitting thread local BSS Symbols.  Default is false.

  bool HasMachoTBSSDirective = false;

  /// True if this is a non-GNU COFF target. The COFF port of the GNU linker

  /// doesn't handle associative comdats in the way that we would like to use

  /// them.

  bool HasCOFFAssociativeComdats = false;

  /// True if this is a non-GNU COFF target. For GNU targets, we don't generate

  /// constants into comdat sections.

  bool HasCOFFComdatConstants = false;

  /// True if this is an XCOFF target that supports visibility attributes as

  /// part of .global, .weak, .extern, and .comm. Default is false.

  bool HasVisibilityOnlyWithLinkage = false;

  /// This is the maximum possible length of an instruction, which is needed to

  /// compute the size of an inline asm.  Defaults to 4.

  unsigned MaxInstLength = 4;

  /// Every possible instruction length is a multiple of this value.  Factored

  /// out in .debug_frame and .debug_line.  Defaults to 1.

  unsigned MinInstAlignment = 1;

  /// The '$' token, when not referencing an identifier or constant, refers to

  /// the current PC.  Defaults to false.

  bool DollarIsPC = false;

  /// Allow '.' token, when not referencing an identifier or constant, to refer

  /// to the current PC. Defaults to true.

  bool DotIsPC = true;

  /// Whether the '*' token refers to the current PC. This is used for the

  /// HLASM dialect.

  bool StarIsPC = false;

  /// This string, if specified, is used to separate instructions from each

  /// other when on the same line.  Defaults to ';'

  const char *SeparatorString;

  /// This indicates the comment string used by the assembler.  Defaults to

  /// "#"

  StringRef CommentString;

  /// This indicates whether the comment string is only accepted as a comment

  /// at the beginning of statements. Defaults to false.

  bool RestrictCommentStringToStartOfStatement = false;

  /// This indicates whether to allow additional "comment strings" to be lexed

  /// as a comment. Setting this attribute to true, will ensure that C-style

  /// line comments (// ..), C-style block comments (/* .. */), and "#" are

  /// all treated as comments in addition to the string specified by the

  /// CommentString attribute.

  /// Default is true.

  bool AllowAdditionalComments = true;

  /// Should we emit the '\t' as the starting indentation marker for GNU inline

  /// asm statements. Defaults to true.

  bool EmitGNUAsmStartIndentationMarker = true;

  /// This is appended to emitted labels.  Defaults to ":"

  const char *LabelSuffix;

  /// Emit labels in purely upper case. Defaults to false.

  bool EmitLabelsInUpperCase = false;

  // Print the EH begin symbol with an assignment. Defaults to false.

  bool UseAssignmentForEHBegin = false;

  // Do we need to create a local symbol for .size?

  bool NeedsLocalForSize = false;

  /// This prefix is used for globals like constant pool entries that are

  /// completely private to the .s file and should not have names in the .o

  /// file.  Defaults to "L"

  StringRef PrivateGlobalPrefix;

  /// This prefix is used for labels for basic blocks. Defaults to the same as

  /// PrivateGlobalPrefix.

  StringRef PrivateLabelPrefix;

  /// This prefix is used for symbols that should be passed through the

  /// assembler but be removed by the linker.  This is 'l' on Darwin, currently

  /// used for some ObjC metadata.  The default of "" meast that for this system

  /// a plain private symbol should be used.  Defaults to "".

  StringRef LinkerPrivateGlobalPrefix;

  /// If these are nonempty, they contain a directive to emit before and after

  /// an inline assembly statement.  Defaults to "#APP\n", "#NO_APP\n"

  const char *InlineAsmStart;

  const char *InlineAsmEnd;

  /// These are assembly directives that tells the assembler to interpret the

  /// following instructions differently.  Defaults to ".code16", ".code32",

  /// ".code64".

  const char *Code16Directive;

  const char *Code32Directive;

  const char *Code64Directive;

  /// Which dialect of an assembler variant to use.  Defaults to 0

  unsigned AssemblerDialect = 0;

  /// This is true if the assembler allows @ characters in symbol names.

  /// Defaults to false.

  bool AllowAtInName = false;

  /// This is true if the assembler allows the "?" character at the start of

  /// of a string to be lexed as an AsmToken::Identifier.

  /// If the AsmLexer determines that the string can be lexed as a possible

  /// comment, setting this option will have no effect, and the string will

  /// still be lexed as a comment.

  bool AllowQuestionAtStartOfIdentifier = false;

  /// This is true if the assembler allows the "$" character at the start of

  /// of a string to be lexed as an AsmToken::Identifier.

  /// If the AsmLexer determines that the string can be lexed as a possible

  /// comment, setting this option will have no effect, and the string will

  /// still be lexed as a comment.

  bool AllowDollarAtStartOfIdentifier = false;

  /// This is true if the assembler allows the "@" character at the start of

  /// a string to be lexed as an AsmToken::Identifier.

  /// If the AsmLexer determines that the string can be lexed as a possible

  /// comment, setting this option will have no effect, and the string will

  /// still be lexed as a comment.

  bool AllowAtAtStartOfIdentifier = false;

  /// This is true if the assembler allows the "#" character at the start of

  /// a string to be lexed as an AsmToken::Identifier.

  /// If the AsmLexer determines that the string can be lexed as a possible

  /// comment, setting this option will have no effect, and the string will

  /// still be lexed as a comment.

  bool AllowHashAtStartOfIdentifier = false;

  /// If this is true, symbol names with invalid characters will be printed in

  /// quotes.

  bool SupportsQuotedNames = true;

  /// This is true if data region markers should be printed as

  /// ".data_region/.end_data_region" directives. If false, use "$d/$a" labels

  /// instead.

  bool UseDataRegionDirectives = false;

  /// True if .align is to be used for alignment. Only power-of-two

  /// alignment is supported.

  bool UseDotAlignForAlignment = false;

  /// True if the target supports LEB128 directives.

  bool HasLEB128Directives = true;

  //===--- Data Emission Directives -------------------------------------===//

  /// This should be set to the directive used to get some number of zero (and

  /// non-zero if supported by the directive) bytes emitted to the current

  /// section. Common cases are "\t.zero\t" and "\t.space\t". Defaults to

  /// "\t.zero\t"

  const char *ZeroDirective;

  /// This should be set to true if the zero directive supports a value to emit

  /// other than zero. If this is set to false, the Data*bitsDirective's will be

  /// used to emit these bytes. Defaults to true.

  bool ZeroDirectiveSupportsNonZeroValue = true;

  /// This directive allows emission of an ascii string with the standard C

  /// escape characters embedded into it.  If a target doesn't support this, it

  /// can be set to null. Defaults to "\t.ascii\t"

  const char *AsciiDirective;

  /// If not null, this allows for special handling of zero terminated strings

  /// on this target.  This is commonly supported as ".asciz".  If a target

  /// doesn't support this, it can be set to null.  Defaults to "\t.asciz\t"

  const char *AscizDirective;

  /// This directive accepts a comma-separated list of bytes for emission as a

  /// string of bytes.  For targets that do not support this, it shall be set to

  /// null.  Defaults to null.

  const char *ByteListDirective = nullptr;

  /// This directive allows emission of a zero-terminated ascii string without

  /// the standard C escape characters embedded into it.  If a target doesn't

  /// support this, it can be set to null. Defaults to null.

  const char *PlainStringDirective = nullptr;

  /// Form used for character literals in the assembly syntax.  Useful for

  /// producing strings as byte lists.  If a target does not use or support

  /// this, it shall be set to ACLS_Unknown.  Defaults to ACLS_Unknown.

  AsmCharLiteralSyntax CharacterLiteralSyntax = ACLS_Unknown;

  /// These directives are used to output some unit of integer data to the

  /// current section.  If a data directive is set to null, smaller data

  /// directives will be used to emit the large sizes.  Defaults to "\t.byte\t",

  /// "\t.short\t", "\t.long\t", "\t.quad\t"

  const char *Data8bitsDirective;

  const char *Data16bitsDirective;

  const char *Data32bitsDirective;

  const char *Data64bitsDirective;

  /// True if data directives support signed values

  bool SupportsSignedData = true;

  /// If non-null, a directive that is used to emit a word which should be

  /// relocated as a 64-bit GP-relative offset, e.g. .gpdword on Mips.  Defaults

  /// to nullptr.

  const char *GPRel64Directive = nullptr;

  /// If non-null, a directive that is used to emit a word which should be

  /// relocated as a 32-bit GP-relative offset, e.g. .gpword on Mips or .gprel32

  /// on Alpha.  Defaults to nullptr.

  const char *GPRel32Directive = nullptr;

  /// If non-null, directives that are used to emit a word/dword which should

  /// be relocated as a 32/64-bit DTP/TP-relative offset, e.g. .dtprelword/

  /// .dtpreldword/.tprelword/.tpreldword on Mips.

  const char *DTPRel32Directive = nullptr;

  const char *DTPRel64Directive = nullptr;

  const char *TPRel32Directive = nullptr;

  const char *TPRel64Directive = nullptr;

  /// This is true if this target uses "Sun Style" syntax for section switching

  /// ("#alloc,#write" etc) instead of the normal ELF syntax (,"a,w") in

  /// .section directives.  Defaults to false.

  bool SunStyleELFSectionSwitchSyntax = false;

  /// This is true if this target uses ELF '.section' directive before the

  /// '.bss' one. It's used for PPC/Linux which doesn't support the '.bss'

  /// directive only.  Defaults to false.

  bool UsesELFSectionDirectiveForBSS = false;

  bool NeedsDwarfSectionOffsetDirective = false;

  //===--- Alignment Information ----------------------------------------===//

  /// If this is true (the default) then the asmprinter emits ".align N"

  /// directives, where N is the number of bytes to align to.  Otherwise, it

  /// emits ".align log2(N)", e.g. 3 to align to an 8 byte boundary.  Defaults

  /// to true.

  bool AlignmentIsInBytes = true;

  /// If non-zero, this is used to fill the executable space created as the

  /// result of a alignment directive.  Defaults to 0

  unsigned TextAlignFillValue = 0;

  //===--- Global Variable Emission Directives --------------------------===//

  /// This is the directive used to declare a global entity. Defaults to

  /// ".globl".

  const char *GlobalDirective;

  /// True if the expression

  ///   .long f - g

  /// uses a relocation but it can be suppressed by writing

  ///   a = f - g

  ///   .long a

  bool SetDirectiveSuppressesReloc = false;

  /// False if the assembler requires that we use

  /// \code

  ///   Lc = a - b

  ///   .long Lc

  /// \endcode

  //

  /// instead of

  //

  /// \code

  ///   .long a - b

  /// \endcode

  ///

  ///  Defaults to true.

  bool HasAggressiveSymbolFolding = true;

  /// True is .comm's and .lcomms optional alignment is to be specified in bytes

  /// instead of log2(n).  Defaults to true.

  bool COMMDirectiveAlignmentIsInBytes = true;

  /// Describes if the .lcomm directive for the target supports an alignment

  /// argument and how it is interpreted.  Defaults to NoAlignment.

  LCOMM::LCOMMType LCOMMDirectiveAlignmentType = LCOMM::NoAlignment;

  /// True if the target only has basename for .file directive. False if the

  /// target also needs the directory along with the basename. Defaults to true.

  bool HasBasenameOnlyForFileDirective = true;

  /// True if the target represents string constants as mostly raw characters in

  /// paired double quotation with paired double quotation marks as the escape

  /// mechanism to represent a double quotation mark within the string. Defaults

  /// to false.

  bool HasPairedDoubleQuoteStringConstants = false;

  // True if the target allows .align directives on functions. This is true for

  // most targets, so defaults to true.

  bool HasFunctionAlignment = true;

  /// True if the target has .type and .size directives, this is true for most

  /// ELF targets.  Defaults to true.

  bool HasDotTypeDotSizeDirective = true;

  /// True if the target has a single parameter .file directive, this is true

  /// for ELF targets.  Defaults to true.

  bool HasSingleParameterDotFile = true;

  /// True if the target has a four strings .file directive, strings seperated

  /// by comma. Defaults to false.

  bool HasFourStringsDotFile = false;

  /// True if the target has a .ident directive, this is true for ELF targets.

  /// Defaults to false.

  bool HasIdentDirective = false;

  /// True if this target supports the MachO .no_dead_strip directive.  Defaults

  /// to false.

  bool HasNoDeadStrip = false;

  /// True if this target supports the MachO .alt_entry directive.  Defaults to

  /// false.

  bool HasAltEntry = false;

  /// Used to declare a global as being a weak symbol. Defaults to ".weak".

  const char *WeakDirective;

  /// This directive, if non-null, is used to declare a global as being a weak

  /// undefined symbol.  Defaults to nullptr.

  const char *WeakRefDirective = nullptr;

  /// True if we have a directive to declare a global as being a weak defined

  /// symbol.  Defaults to false.

  bool HasWeakDefDirective = false;

  /// True if we have a directive to declare a global as being a weak defined

  /// symbol that can be hidden (unexported).  Defaults to false.

  bool HasWeakDefCanBeHiddenDirective = false;

  /// True if we should mark symbols as global instead of weak, for

  /// weak*/linkonce*, if the symbol has a comdat.

  /// Defaults to false.

  bool AvoidWeakIfComdat = false;

  /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having

  /// hidden visibility.  Defaults to MCSA_Hidden.

  MCSymbolAttr HiddenVisibilityAttr = MCSA_Hidden;

  /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having

  /// exported visibility.  Defaults to MCSA_Exported.

  MCSymbolAttr ExportedVisibilityAttr = MCSA_Exported;

  /// This attribute, if not MCSA_Invalid, is used to declare an undefined

  /// symbol as having hidden visibility. Defaults to MCSA_Hidden.

  MCSymbolAttr HiddenDeclarationVisibilityAttr = MCSA_Hidden;

  /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having

  /// protected visibility.  Defaults to MCSA_Protected

  MCSymbolAttr ProtectedVisibilityAttr = MCSA_Protected;

  MCSymbolAttr MemtagAttr = MCSA_Memtag;

  //===--- Dwarf Emission Directives -----------------------------------===//

  /// True if target supports emission of debugging information.  Defaults to

  /// false.

  bool SupportsDebugInformation = false;

  /// Exception handling format for the target.  Defaults to None.

  ExceptionHandling ExceptionsType = ExceptionHandling::None;

  /// True if target uses CFI unwind information for debugging purpose when

  /// `ExceptionsType == ExceptionHandling::None`.

  bool UsesCFIForDebug = false;

  /// Windows exception handling data (.pdata) encoding.  Defaults to Invalid.

  WinEH::EncodingType WinEHEncodingType = WinEH::EncodingType::Invalid;

  /// True if Dwarf2 output generally uses relocations for references to other

  /// .debug_* sections.

  bool DwarfUsesRelocationsAcrossSections = true;

  /// True if DWARF FDE symbol reference relocations should be replaced by an

  /// absolute difference.

  bool DwarfFDESymbolsUseAbsDiff = false;

  /// True if the target supports generating the DWARF line table through using

  /// the .loc/.file directives. Defaults to true.

  bool UsesDwarfFileAndLocDirectives = true;

  /// True if DWARF `.file directory' directive syntax is used by

  /// default.

  bool EnableDwarfFileDirectoryDefault = true;

  /// True if the target needs the DWARF section length in the header (if any)

  /// of the DWARF section in the assembly file. Defaults to true.

  bool DwarfSectionSizeRequired = true;

  /// True if dwarf register numbers are printed instead of symbolic register

  /// names in .cfi_* directives.  Defaults to false.

  bool DwarfRegNumForCFI = false;

  /// True if target uses parens to indicate the symbol variant instead of @.

  /// For example, foo(plt) instead of foo@plt.  Defaults to false.

  bool UseParensForSymbolVariant = false;

  /// True if the target uses parens for symbol names starting with

  /// '$' character to distinguish them from absolute names.

  bool UseParensForDollarSignNames = true;

  /// True if the target supports flags in ".loc" directive, false if only

  /// location is allowed.

  bool SupportsExtendedDwarfLocDirective = true;

  //===--- Prologue State ----------------------------------------------===//

  std::vector<MCCFIInstruction> InitialFrameState;

  //===--- Integrated Assembler Information ----------------------------===//

  // Generated object files can use all ELF features supported by GNU ld of

  // this binutils version and later. INT_MAX means all features can be used,

  // regardless of GNU ld support. The default value is referenced by

  // clang/Driver/Options.td.

  std::pair<int, int> BinutilsVersion = {2, 26};

  /// Should we use the integrated assembler?

  /// The integrated assembler should be enabled by default (by the

  /// constructors) when failing to parse a valid piece of assembly (inline

  /// or otherwise) is considered a bug. It may then be overridden after

  /// construction (see LLVMTargetMachine::initAsmInfo()).

  bool UseIntegratedAssembler;

  /// Use AsmParser to parse inlineAsm when UseIntegratedAssembler is not set.

  bool ParseInlineAsmUsingAsmParser;

  /// Preserve Comments in assembly

  bool PreserveAsmComments;

  /// Compress DWARF debug sections. Defaults to no compression.

  DebugCompressionType CompressDebugSections = DebugCompressionType::None;

  /// True if the integrated assembler should interpret 'a >> b' constant

  /// expressions as logical rather than arithmetic.

  bool UseLogicalShr = true;

  // If true, emit GOTPCRELX/REX_GOTPCRELX instead of GOTPCREL, on

  // X86_64 ELF.

  bool RelaxELFRelocations = true;

  // If true, then the lexer and expression parser will support %neg(),

  // %hi(), and similar unary operators.

  bool HasMipsExpressions = false;

  // If true, use Motorola-style integers in Assembly (ex. $0ac).

  bool UseMotorolaIntegers = false;

  // If true, emit function descriptor symbol on AIX.

  bool NeedsFunctionDescriptors = false;

public:

  explicit MCAsmInfo();

  virtual ~MCAsmInfo();

  /// Get the code pointer size in bytes.

  unsigned getCodePointerSize() const { return CodePointerSize; }

  /// Get the callee-saved register stack slot

  /// size in bytes.

  unsigned getCalleeSaveStackSlotSize() const {

    return CalleeSaveStackSlotSize;

  }

  /// True if the target is little endian.

  bool isLittleEndian() const { return IsLittleEndian; }

  /// True if target stack grow up.

  bool isStackGrowthDirectionUp() const { return StackGrowsUp; }

  bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }

  // Data directive accessors.

  const char *getData8bitsDirective() const { return Data8bitsDirective; }

  const char *getData16bitsDirective() const { return Data16bitsDirective; }

  const char *getData32bitsDirective() const { return Data32bitsDirective; }

  const char *getData64bitsDirective() const { return Data64bitsDirective; }

  bool supportsSignedData() const { return SupportsSignedData; }

  const char *getGPRel64Directive() const { return GPRel64Directive; }

  const char *getGPRel32Directive() const { return GPRel32Directive; }

  const char *getDTPRel64Directive() const { return DTPRel64Directive; }

  const char *getDTPRel32Directive() const { return DTPRel32Directive; }

  const char *getTPRel64Directive() const { return TPRel64Directive; }

  const char *getTPRel32Directive() const { return TPRel32Directive; }

  /// Targets can implement this method to specify a section to switch to if the

  /// translation unit doesn't have any trampolines that require an executable

  /// stack.

  virtual MCSection *getNonexecutableStackSection(MCContext &Ctx) const {

    return nullptr;

  }

  /// True if the section is atomized using the symbols in it.

  /// This is false if the section is not atomized at all (most ELF sections) or

  /// if it is atomized based on its contents (MachO' __TEXT,__cstring for

  /// example).

  virtual bool isSectionAtomizableBySymbols(const MCSection &Section) const;

  virtual const MCExpr *getExprForPersonalitySymbol(const MCSymbol *Sym,

                                                    unsigned Encoding,

                                                    MCStreamer &Streamer) const;

  virtual const MCExpr *getExprForFDESymbol(const MCSymbol *Sym,

                                            unsigned Encoding,

                                            MCStreamer &Streamer) const;

  /// Return true if C is an acceptable character inside a symbol name.

  virtual bool isAcceptableChar(char C) const;

  /// Return true if the identifier \p Name does not need quotes to be

  /// syntactically correct.

  virtual bool isValidUnquotedName(StringRef Name) const;

  /// Return true if the .section directive should be omitted when

  /// emitting \p SectionName.  For example:

  ///

  /// shouldOmitSectionDirective(".text")

  ///

  /// returns false => .section .text,#alloc,#execinstr

  /// returns true  => .text

  virtual bool shouldOmitSectionDirective(StringRef SectionName) const;

  bool usesSunStyleELFSectionSwitchSyntax() const {

    return SunStyleELFSectionSwitchSyntax;

  }

  bool usesELFSectionDirectiveForBSS() const {

    return UsesELFSectionDirectiveForBSS;

  }

  bool needsDwarfSectionOffsetDirective() const {

    return NeedsDwarfSectionOffsetDirective;

  }

  // Accessors.

  bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }

  bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; }

  bool hasCOFFAssociativeComdats() const { return HasCOFFAssociativeComdats; }

  bool hasCOFFComdatConstants() const { return HasCOFFComdatConstants; }

  bool hasVisibilityOnlyWithLinkage() const {

    return HasVisibilityOnlyWithLinkage;

  }

  /// Returns the maximum possible encoded instruction size in bytes. If \p STI

  /// is null, this should be the maximum size for any subtarget.

  virtual unsigned getMaxInstLength(const MCSubtargetInfo *STI = nullptr) const {

    return MaxInstLength;

  }

  unsigned getMinInstAlignment() const { return MinInstAlignment; }

  bool getDollarIsPC() const { return DollarIsPC; }

  bool getDotIsPC() const { return DotIsPC; }

  bool getStarIsPC() const { return StarIsPC; }

  const char *getSeparatorString() const { return SeparatorString; }

  /// This indicates the column (zero-based) at which asm comments should be

  /// printed.

  unsigned getCommentColumn() const { return 40; }

  StringRef getCommentString() const { return CommentString; }

  bool getRestrictCommentStringToStartOfStatement() const {

    return RestrictCommentStringToStartOfStatement;

  }

  bool shouldAllowAdditionalComments() const { return AllowAdditionalComments; }

  bool getEmitGNUAsmStartIndentationMarker() const {

    return EmitGNUAsmStartIndentationMarker;

  }

  const char *getLabelSuffix() const { return LabelSuffix; }

  bool shouldEmitLabelsInUpperCase() const { return EmitLabelsInUpperCase; }

  bool useAssignmentForEHBegin() const { return UseAssignmentForEHBegin; }

  bool needsLocalForSize() const { return NeedsLocalForSize; }

  StringRef getPrivateGlobalPrefix() const { return PrivateGlobalPrefix; }

  StringRef getPrivateLabelPrefix() const { return PrivateLabelPrefix; }

  bool hasLinkerPrivateGlobalPrefix() const {

    return !LinkerPrivateGlobalPrefix.empty();

  }

  StringRef getLinkerPrivateGlobalPrefix() const {

    if (hasLinkerPrivateGlobalPrefix())

      return LinkerPrivateGlobalPrefix;

    return getPrivateGlobalPrefix();

  }

  const char *getInlineAsmStart() const { return InlineAsmStart; }

  const char *getInlineAsmEnd() const { return InlineAsmEnd; }

  const char *getCode16Directive() const { return Code16Directive; }

  const char *getCode32Directive() const { return Code32Directive; }

  const char *getCode64Directive() const { return Code64Directive; }

  unsigned getAssemblerDialect() const { return AssemblerDialect; }

  bool doesAllowAtInName() const { return AllowAtInName; }

  void setAllowAtInName(bool V) { AllowAtInName = V; }

  bool doesAllowQuestionAtStartOfIdentifier() const {

    return AllowQuestionAtStartOfIdentifier;

  }

  bool doesAllowAtAtStartOfIdentifier() const {

    return AllowAtAtStartOfIdentifier;

  }

  bool doesAllowDollarAtStartOfIdentifier() const {

    return AllowDollarAtStartOfIdentifier;

  }

  bool doesAllowHashAtStartOfIdentifier() const {

    return AllowHashAtStartOfIdentifier;

  }

  bool supportsNameQuoting() const { return SupportsQuotedNames; }

  bool doesSupportDataRegionDirectives() const {

    return UseDataRegionDirectives;

  }

  bool useDotAlignForAlignment() const {

    return UseDotAlignForAlignment;

  }

  bool hasLEB128Directives() const { return HasLEB128Directives; }

  const char *getZeroDirective() const { return ZeroDirective; }

  bool doesZeroDirectiveSupportNonZeroValue() const {

    return ZeroDirectiveSupportsNonZeroValue;

  }

  const char *getAsciiDirective() const { return AsciiDirective; }

  const char *getAscizDirective() const { return AscizDirective; }

  const char *getByteListDirective() const { return ByteListDirective; }

  const char *getPlainStringDirective() const { return PlainStringDirective; }

  AsmCharLiteralSyntax characterLiteralSyntax() const {

    return CharacterLiteralSyntax;

  }

  bool getAlignmentIsInBytes() const { return AlignmentIsInBytes; }

  unsigned getTextAlignFillValue() const { return TextAlignFillValue; }

  const char *getGlobalDirective() const { return GlobalDirective; }

  bool doesSetDirectiveSuppressReloc() const {

    return SetDirectiveSuppressesReloc;

  }

  bool hasAggressiveSymbolFolding() const { return HasAggressiveSymbolFolding; }

  bool getCOMMDirectiveAlignmentIsInBytes() const {

    return COMMDirectiveAlignmentIsInBytes;

  }

  LCOMM::LCOMMType getLCOMMDirectiveAlignmentType() const {

    return LCOMMDirectiveAlignmentType;

  }

  bool hasBasenameOnlyForFileDirective() const {

    return HasBasenameOnlyForFileDirective;

  }

  bool hasPairedDoubleQuoteStringConstants() const {

    return HasPairedDoubleQuoteStringConstants;

  }

  bool hasFunctionAlignment() const { return HasFunctionAlignment; }

  bool hasDotTypeDotSizeDirective() const { return HasDotTypeDotSizeDirective; }

  bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }

  bool hasFourStringsDotFile() const { return HasFourStringsDotFile; }

  bool hasIdentDirective() const { return HasIdentDirective; }

  bool hasNoDeadStrip() const { return HasNoDeadStrip; }

  bool hasAltEntry() const { return HasAltEntry; }

  const char *getWeakDirective() const { return WeakDirective; }

  const char *getWeakRefDirective() const { return WeakRefDirective; }

  bool hasWeakDefDirective() const { return HasWeakDefDirective; }

  bool hasWeakDefCanBeHiddenDirective() const {

    return HasWeakDefCanBeHiddenDirective;

  }

  bool avoidWeakIfComdat() const { return AvoidWeakIfComdat; }

  MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr; }

  MCSymbolAttr getExportedVisibilityAttr() const { return ExportedVisibilityAttr; }

  MCSymbolAttr getHiddenDeclarationVisibilityAttr() const {

    return HiddenDeclarationVisibilityAttr;

  }

  MCSymbolAttr getProtectedVisibilityAttr() const {

    return ProtectedVisibilityAttr;

  }

  MCSymbolAttr getMemtagAttr() const { return MemtagAttr; }

  bool doesSupportDebugInformation() const { return SupportsDebugInformation; }

  ExceptionHandling getExceptionHandlingType() const { return ExceptionsType; }

  WinEH::EncodingType getWinEHEncodingType() const { return WinEHEncodingType; }

  void setExceptionsType(ExceptionHandling EH) {

    ExceptionsType = EH;

  }

  bool doesUseCFIForDebug() const { return UsesCFIForDebug; }

  /// Returns true if the exception handling method for the platform uses call

  /// frame information to unwind.

  bool usesCFIForEH() const {

    return (ExceptionsType == ExceptionHandling::DwarfCFI ||

            ExceptionsType == ExceptionHandling::ARM || usesWindowsCFI());

  }

  bool usesWindowsCFI() const {

    return ExceptionsType == ExceptionHandling::WinEH &&

           (WinEHEncodingType != WinEH::EncodingType::Invalid &&

            WinEHEncodingType != WinEH::EncodingType::X86);

  }

  bool doesDwarfUseRelocationsAcrossSections() const {

    return DwarfUsesRelocationsAcrossSections;

  }

  bool doDwarfFDESymbolsUseAbsDiff() const { return DwarfFDESymbolsUseAbsDiff; }

  bool useDwarfRegNumForCFI() const { return DwarfRegNumForCFI; }

  bool useParensForSymbolVariant() const { return UseParensForSymbolVariant; }

  bool useParensForDollarSignNames() const {

    return UseParensForDollarSignNames;

  }

  bool supportsExtendedDwarfLocDirective() const {

    return SupportsExtendedDwarfLocDirective;

  }

  bool usesDwarfFileAndLocDirectives() const {

    return UsesDwarfFileAndLocDirectives;

  }

  bool needsDwarfSectionSizeInHeader() const {

    return DwarfSectionSizeRequired;

  }

  bool enableDwarfFileDirectoryDefault() const {

    return EnableDwarfFileDirectoryDefault;

  }

  void addInitialFrameState(const MCCFIInstruction &Inst);

  const std::vector<MCCFIInstruction> &getInitialFrameState() const {

    return InitialFrameState;

  }

  void setBinutilsVersion(std::pair<int, int> Value) {

    BinutilsVersion = Value;

  }

  /// Return true if assembly (inline or otherwise) should be parsed.

  bool useIntegratedAssembler() const { return UseIntegratedAssembler; }

  /// Return true if target want to use AsmParser to parse inlineasm.

  bool parseInlineAsmUsingAsmParser() const {

    return ParseInlineAsmUsingAsmParser;

  }

  bool binutilsIsAtLeast(int Major, int Minor) const {

    return BinutilsVersion >= std::make_pair(Major, Minor);

  }

  /// Set whether assembly (inline or otherwise) should be parsed.

  virtual void setUseIntegratedAssembler(bool Value) {

    UseIntegratedAssembler = Value;

  }

  /// Set whether target want to use AsmParser to parse inlineasm.