Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 1521 deletions

diff --git a/gnu/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp b/gnu/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
deleted file mode 100644
index d3744fffac3..00000000000
--- a/gnu/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
+++ /dev/null
@@ -1,1521 +0,0 @@
-//===- lib/MC/ARMELFStreamer.cpp - ELF Object Output for ARM --------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file assembles .s files and emits ARM ELF .o object files. Different
-// from generic ELF streamer in emitting mapping symbols ($a, $t and $d) to
-// delimit regions of data and code.
-//
-//===----------------------------------------------------------------------===//
-
-#include "ARMRegisterInfo.h"
-#include "ARMUnwindOpAsm.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/BinaryFormat/ELF.h"
-#include "llvm/MC/MCAsmBackend.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCAssembler.h"
-#include "llvm/MC/MCCodeEmitter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCELFStreamer.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCFixup.h"
-#include "llvm/MC/MCFragment.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCInstPrinter.h"
-#include "llvm/MC/MCObjectWriter.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/MC/MCSection.h"
-#include "llvm/MC/MCSectionELF.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCSymbolELF.h"
-#include "llvm/MC/SectionKind.h"
-#include "llvm/Support/ARMBuildAttributes.h"
-#include "llvm/Support/ARMEHABI.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/LEB128.h"
-#include "llvm/Support/TargetParser.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cassert>
-#include <climits>
-#include <cstddef>
-#include <cstdint>
-#include <string>
-
-using namespace llvm;
-
-static std::string GetAEABIUnwindPersonalityName(unsigned Index) {
-  assert(Index < ARM::EHABI::NUM_PERSONALITY_INDEX &&
-         "Invalid personality index");
-  return (Twine("__aeabi_unwind_cpp_pr") + Twine(Index)).str();
-}
-
-namespace {
-
-class ARMELFStreamer;
-
-class ARMTargetAsmStreamer : public ARMTargetStreamer {
-  formatted_raw_ostream &OS;
-  MCInstPrinter &InstPrinter;
-  bool IsVerboseAsm;
-
-  void emitFnStart() override;
-  void emitFnEnd() override;
-  void emitCantUnwind() override;
-  void emitPersonality(const MCSymbol *Personality) override;
-  void emitPersonalityIndex(unsigned Index) override;
-  void emitHandlerData() override;
-  void emitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0) override;
-  void emitMovSP(unsigned Reg, int64_t Offset = 0) override;
-  void emitPad(int64_t Offset) override;
-  void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
-                   bool isVector) override;
-  void emitUnwindRaw(int64_t Offset,
-                     const SmallVectorImpl<uint8_t> &Opcodes) override;
-
-  void switchVendor(StringRef Vendor) override;
-  void emitAttribute(unsigned Attribute, unsigned Value) override;
-  void emitTextAttribute(unsigned Attribute, StringRef String) override;
-  void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
-                            StringRef StringValue) override;
-  void emitArch(ARM::ArchKind Arch) override;
-  void emitArchExtension(unsigned ArchExt) override;
-  void emitObjectArch(ARM::ArchKind Arch) override;
-  void emitFPU(unsigned FPU) override;
-  void emitInst(uint32_t Inst, char Suffix = '\0') override;
-  void finishAttributeSection() override;
-
-  void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE) override;
-  void emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) override;
-
-public:
-  ARMTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS,
-                       MCInstPrinter &InstPrinter, bool VerboseAsm);
-};
-
-ARMTargetAsmStreamer::ARMTargetAsmStreamer(MCStreamer &S,
-                                           formatted_raw_ostream &OS,
-                                           MCInstPrinter &InstPrinter,
-                                           bool VerboseAsm)
-    : ARMTargetStreamer(S), OS(OS), InstPrinter(InstPrinter),
-      IsVerboseAsm(VerboseAsm) {}
-
-void ARMTargetAsmStreamer::emitFnStart() { OS << "\t.fnstart\n"; }
-void ARMTargetAsmStreamer::emitFnEnd() { OS << "\t.fnend\n"; }
-void ARMTargetAsmStreamer::emitCantUnwind() { OS << "\t.cantunwind\n"; }
-
-void ARMTargetAsmStreamer::emitPersonality(const MCSymbol *Personality) {
-  OS << "\t.personality " << Personality->getName() << '\n';
-}
-
-void ARMTargetAsmStreamer::emitPersonalityIndex(unsigned Index) {
-  OS << "\t.personalityindex " << Index << '\n';
-}
-
-void ARMTargetAsmStreamer::emitHandlerData() { OS << "\t.handlerdata\n"; }
-
-void ARMTargetAsmStreamer::emitSetFP(unsigned FpReg, unsigned SpReg,
-                                     int64_t Offset) {
-  OS << "\t.setfp\t";
-  InstPrinter.printRegName(OS, FpReg);
-  OS << ", ";
-  InstPrinter.printRegName(OS, SpReg);
-  if (Offset)
-    OS << ", #" << Offset;
-  OS << '\n';
-}
-
-void ARMTargetAsmStreamer::emitMovSP(unsigned Reg, int64_t Offset) {
-  assert((Reg != ARM::SP && Reg != ARM::PC) &&
-         "the operand of .movsp cannot be either sp or pc");
-
-  OS << "\t.movsp\t";
-  InstPrinter.printRegName(OS, Reg);
-  if (Offset)
-    OS << ", #" << Offset;
-  OS << '\n';
-}
-
-void ARMTargetAsmStreamer::emitPad(int64_t Offset) {
-  OS << "\t.pad\t#" << Offset << '\n';
-}
-
-void ARMTargetAsmStreamer::emitRegSave(const SmallVectorImpl<unsigned> &RegList,
-                                       bool isVector) {
-  assert(RegList.size() && "RegList should not be empty");
-  if (isVector)
-    OS << "\t.vsave\t{";
-  else
-    OS << "\t.save\t{";
-
-  InstPrinter.printRegName(OS, RegList[0]);
-
-  for (unsigned i = 1, e = RegList.size(); i != e; ++i) {
-    OS << ", ";
-    InstPrinter.printRegName(OS, RegList[i]);
-  }
-
-  OS << "}\n";
-}
-
-void ARMTargetAsmStreamer::switchVendor(StringRef Vendor) {}
-
-void ARMTargetAsmStreamer::emitAttribute(unsigned Attribute, unsigned Value) {
-  OS << "\t.eabi_attribute\t" << Attribute << ", " << Twine(Value);
-  if (IsVerboseAsm) {
-    StringRef Name = ARMBuildAttrs::AttrTypeAsString(Attribute);
-    if (!Name.empty())
-      OS << "\t@ " << Name;
-  }
-  OS << "\n";
-}
-
-void ARMTargetAsmStreamer::emitTextAttribute(unsigned Attribute,
-                                             StringRef String) {
-  switch (Attribute) {
-  case ARMBuildAttrs::CPU_name:
-    OS << "\t.cpu\t" << String.lower();
-    break;
-  default:
-    OS << "\t.eabi_attribute\t" << Attribute << ", \"" << String << "\"";
-    if (IsVerboseAsm) {
-      StringRef Name = ARMBuildAttrs::AttrTypeAsString(Attribute);
-      if (!Name.empty())
-        OS << "\t@ " << Name;
-    }
-    break;
-  }
-  OS << "\n";
-}
-
-void ARMTargetAsmStreamer::emitIntTextAttribute(unsigned Attribute,
-                                                unsigned IntValue,
-                                                StringRef StringValue) {
-  switch (Attribute) {
-  default: llvm_unreachable("unsupported multi-value attribute in asm mode");
-  case ARMBuildAttrs::compatibility:
-    OS << "\t.eabi_attribute\t" << Attribute << ", " << IntValue;
-    if (!StringValue.empty())
-      OS << ", \"" << StringValue << "\"";
-    if (IsVerboseAsm)
-      OS << "\t@ " << ARMBuildAttrs::AttrTypeAsString(Attribute);
-    break;
-  }
-  OS << "\n";
-}
-
-void ARMTargetAsmStreamer::emitArch(ARM::ArchKind Arch) {
-  OS << "\t.arch\t" << ARM::getArchName(Arch) << "\n";
-}
-
-void ARMTargetAsmStreamer::emitArchExtension(unsigned ArchExt) {
-  OS << "\t.arch_extension\t" << ARM::getArchExtName(ArchExt) << "\n";
-}
-
-void ARMTargetAsmStreamer::emitObjectArch(ARM::ArchKind Arch) {
-  OS << "\t.object_arch\t" << ARM::getArchName(Arch) << '\n';
-}
-
-void ARMTargetAsmStreamer::emitFPU(unsigned FPU) {
-  OS << "\t.fpu\t" << ARM::getFPUName(FPU) << "\n";
-}
-
-void ARMTargetAsmStreamer::finishAttributeSection() {}
-
-void
-ARMTargetAsmStreamer::AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *S) {
-  OS << "\t.tlsdescseq\t" << S->getSymbol().getName();
-}
-
-void ARMTargetAsmStreamer::emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) {
-  const MCAsmInfo *MAI = Streamer.getContext().getAsmInfo();
-
-  OS << "\t.thumb_set\t";
-  Symbol->print(OS, MAI);
-  OS << ", ";
-  Value->print(OS, MAI);
-  OS << '\n';
-}
-
-void ARMTargetAsmStreamer::emitInst(uint32_t Inst, char Suffix) {
-  OS << "\t.inst";
-  if (Suffix)
-    OS << "." << Suffix;
-  OS << "\t0x" << Twine::utohexstr(Inst) << "\n";
-}
-
-void ARMTargetAsmStreamer::emitUnwindRaw(int64_t Offset,
-                                      const SmallVectorImpl<uint8_t> &Opcodes) {
-  OS << "\t.unwind_raw " << Offset;
-  for (SmallVectorImpl<uint8_t>::const_iterator OCI = Opcodes.begin(),
-                                                OCE = Opcodes.end();
-       OCI != OCE; ++OCI)
-    OS << ", 0x" << Twine::utohexstr(*OCI);
-  OS << '\n';
-}
-
-class ARMTargetELFStreamer : public ARMTargetStreamer {
-private:
-  // This structure holds all attributes, accounting for
-  // their string/numeric value, so we can later emit them
-  // in declaration order, keeping all in the same vector
-  struct AttributeItem {
-    enum {
-      HiddenAttribute = 0,
-      NumericAttribute,
-      TextAttribute,
-      NumericAndTextAttributes
-    } Type;
-    unsigned Tag;
-    unsigned IntValue;
-    std::string StringValue;
-
-    static bool LessTag(const AttributeItem &LHS, const AttributeItem &RHS) {
-      // The conformance tag must be emitted first when serialised
-      // into an object file. Specifically, the addenda to the ARM ABI
-      // states that (2.3.7.4):
-      //
-      // "To simplify recognition by consumers in the common case of
-      // claiming conformity for the whole file, this tag should be
-      // emitted first in a file-scope sub-subsection of the first
-      // public subsection of the attributes section."
-      //
-      // So it is special-cased in this comparison predicate when the
-      // attributes are sorted in finishAttributeSection().
-      return (RHS.Tag != ARMBuildAttrs::conformance) &&
-             ((LHS.Tag == ARMBuildAttrs::conformance) || (LHS.Tag < RHS.Tag));
-    }
-  };
-
-  StringRef CurrentVendor;
-  unsigned FPU = ARM::FK_INVALID;
-  ARM::ArchKind Arch = ARM::ArchKind::INVALID;
-  ARM::ArchKind EmittedArch = ARM::ArchKind::INVALID;
-  SmallVector<AttributeItem, 64> Contents;
-
-  MCSection *AttributeSection = nullptr;
-
-  AttributeItem *getAttributeItem(unsigned Attribute) {
-    for (size_t i = 0; i < Contents.size(); ++i)
-      if (Contents[i].Tag == Attribute)
-        return &Contents[i];
-    return nullptr;
-  }
-
-  void setAttributeItem(unsigned Attribute, unsigned Value,
-                        bool OverwriteExisting) {
-    // Look for existing attribute item
-    if (AttributeItem *Item = getAttributeItem(Attribute)) {
-      if (!OverwriteExisting)
-        return;
-      Item->Type = AttributeItem::NumericAttribute;
-      Item->IntValue = Value;
-      return;
-    }
-
-    // Create new attribute item
-    AttributeItem Item = {
-      AttributeItem::NumericAttribute,
-      Attribute,
-      Value,
-      StringRef("")
-    };
-    Contents.push_back(Item);
-  }
-
-  void setAttributeItem(unsigned Attribute, StringRef Value,
-                        bool OverwriteExisting) {
-    // Look for existing attribute item
-    if (AttributeItem *Item = getAttributeItem(Attribute)) {
-      if (!OverwriteExisting)
-        return;
-      Item->Type = AttributeItem::TextAttribute;
-      Item->StringValue = Value;
-      return;
-    }
-
-    // Create new attribute item
-    AttributeItem Item = {
-      AttributeItem::TextAttribute,
-      Attribute,
-      0,
-      Value
-    };
-    Contents.push_back(Item);
-  }
-
-  void setAttributeItems(unsigned Attribute, unsigned IntValue,
-                         StringRef StringValue, bool OverwriteExisting) {
-    // Look for existing attribute item
-    if (AttributeItem *Item = getAttributeItem(Attribute)) {
-      if (!OverwriteExisting)
-        return;
-      Item->Type = AttributeItem::NumericAndTextAttributes;
-      Item->IntValue = IntValue;
-      Item->StringValue = StringValue;
-      return;
-    }
-
-    // Create new attribute item
-    AttributeItem Item = {
-      AttributeItem::NumericAndTextAttributes,
-      Attribute,
-      IntValue,
-      StringValue
-    };
-    Contents.push_back(Item);
-  }
-
-  void emitArchDefaultAttributes();
-  void emitFPUDefaultAttributes();
-
-  ARMELFStreamer &getStreamer();
-
-  void emitFnStart() override;
-  void emitFnEnd() override;
-  void emitCantUnwind() override;
-  void emitPersonality(const MCSymbol *Personality) override;
-  void emitPersonalityIndex(unsigned Index) override;
-  void emitHandlerData() override;
-  void emitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0) override;
-  void emitMovSP(unsigned Reg, int64_t Offset = 0) override;
-  void emitPad(int64_t Offset) override;
-  void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
-                   bool isVector) override;
-  void emitUnwindRaw(int64_t Offset,
-                     const SmallVectorImpl<uint8_t> &Opcodes) override;
-
-  void switchVendor(StringRef Vendor) override;
-  void emitAttribute(unsigned Attribute, unsigned Value) override;
-  void emitTextAttribute(unsigned Attribute, StringRef String) override;
-  void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
-                            StringRef StringValue) override;
-  void emitArch(ARM::ArchKind Arch) override;
-  void emitObjectArch(ARM::ArchKind Arch) override;
-  void emitFPU(unsigned FPU) override;
-  void emitInst(uint32_t Inst, char Suffix = '\0') override;
-  void finishAttributeSection() override;
-  void emitLabel(MCSymbol *Symbol) override;
-
-  void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE) override;
-  void emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) override;
-
-  size_t calculateContentSize() const;
-
-  // Reset state between object emissions
-  void reset() override;
-
-public:
-  ARMTargetELFStreamer(MCStreamer &S)
-    : ARMTargetStreamer(S), CurrentVendor("aeabi") {}
-};
-
-/// Extend the generic ELFStreamer class so that it can emit mapping symbols at
-/// the appropriate points in the object files. These symbols are defined in the
-/// ARM ELF ABI: infocenter.arm.com/help/topic/com.arm.../IHI0044D_aaelf.pdf.
-///
-/// In brief: $a, $t or $d should be emitted at the start of each contiguous
-/// region of ARM code, Thumb code or data in a section. In practice, this
-/// emission does not rely on explicit assembler directives but on inherent
-/// properties of the directives doing the emission (e.g. ".byte" is data, "add
-/// r0, r0, r0" an instruction).
-///
-/// As a result this system is orthogonal to the DataRegion infrastructure used
-/// by MachO. Beware!
-class ARMELFStreamer : public MCELFStreamer {
-public:
-  friend class ARMTargetELFStreamer;
-
-  ARMELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB,
-                 std::unique_ptr<MCObjectWriter> OW, std::unique_ptr<MCCodeEmitter> Emitter,
-                 bool IsThumb)
-      : MCELFStreamer(Context, std::move(TAB), std::move(OW), std::move(Emitter)),
-        IsThumb(IsThumb) {
-    EHReset();
-  }
-
-  ~ARMELFStreamer() override = default;
-
-  void FinishImpl() override;
-
-  // ARM exception handling directives
-  void emitFnStart();
-  void emitFnEnd();
-  void emitCantUnwind();
-  void emitPersonality(const MCSymbol *Per);
-  void emitPersonalityIndex(unsigned index);
-  void emitHandlerData();
-  void emitSetFP(unsigned NewFpReg, unsigned NewSpReg, int64_t Offset = 0);
-  void emitMovSP(unsigned Reg, int64_t Offset = 0);
-  void emitPad(int64_t Offset);
-  void emitRegSave(const SmallVectorImpl<unsigned> &RegList, bool isVector);
-  void emitUnwindRaw(int64_t Offset, const SmallVectorImpl<uint8_t> &Opcodes);
-  void emitFill(const MCExpr &NumBytes, uint64_t FillValue,
-                SMLoc Loc) override {
-    EmitDataMappingSymbol();
-    MCObjectStreamer::emitFill(NumBytes, FillValue, Loc);
-  }
-
-  void ChangeSection(MCSection *Section, const MCExpr *Subsection) override {
-    LastMappingSymbols[getCurrentSection().first] = std::move(LastEMSInfo);
-    MCELFStreamer::ChangeSection(Section, Subsection);
-    auto LastMappingSymbol = LastMappingSymbols.find(Section);
-    if (LastMappingSymbol != LastMappingSymbols.end()) {
-      LastEMSInfo = std::move(LastMappingSymbol->second);
-      return;
-    }
-    LastEMSInfo.reset(new ElfMappingSymbolInfo(SMLoc(), nullptr, 0));
-  }
-
-  /// This function is the one used to emit instruction data into the ELF
-  /// streamer. We override it to add the appropriate mapping symbol if
-  /// necessary.
-  void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI,
-                       bool) override {
-    if (IsThumb)
-      EmitThumbMappingSymbol();
-    else
-      EmitARMMappingSymbol();
-
-    MCELFStreamer::EmitInstruction(Inst, STI);
-  }
-
-  void emitInst(uint32_t Inst, char Suffix) {
-    unsigned Size;
-    char Buffer[4];
-    const bool LittleEndian = getContext().getAsmInfo()->isLittleEndian();
-
-    switch (Suffix) {
-    case '\0':
-      Size = 4;
-
-      assert(!IsThumb);
-      EmitARMMappingSymbol();
-      for (unsigned II = 0, IE = Size; II != IE; II++) {
-        const unsigned I = LittleEndian ? (Size - II - 1) : II;
-        Buffer[Size - II - 1] = uint8_t(Inst >> I * CHAR_BIT);
-      }
-
-      break;
-    case 'n':
-    case 'w':
-      Size = (Suffix == 'n' ? 2 : 4);
-
-      assert(IsThumb);
-      EmitThumbMappingSymbol();
-      // Thumb wide instructions are emitted as a pair of 16-bit words of the
-      // appropriate endianness.
-      for (unsigned II = 0, IE = Size; II != IE; II = II + 2) {
-        const unsigned I0 = LittleEndian ? II + 0 : II + 1;
-        const unsigned I1 = LittleEndian ? II + 1 : II + 0;
-        Buffer[Size - II - 2] = uint8_t(Inst >> I0 * CHAR_BIT);
-        Buffer[Size - II - 1] = uint8_t(Inst >> I1 * CHAR_BIT);
-      }
-
-      break;
-    default:
-      llvm_unreachable("Invalid Suffix");
-    }
-
-    MCELFStreamer::EmitBytes(StringRef(Buffer, Size));
-  }
-
-  /// This is one of the functions used to emit data into an ELF section, so the
-  /// ARM streamer overrides it to add the appropriate mapping symbol ($d) if
-  /// necessary.
-  void EmitBytes(StringRef Data) override {
-    EmitDataMappingSymbol();
-    MCELFStreamer::EmitBytes(Data);
-  }
-
-  void FlushPendingMappingSymbol() {
-    if (!LastEMSInfo->hasInfo())
-      return;
-    ElfMappingSymbolInfo *EMS = LastEMSInfo.get();
-    EmitMappingSymbol("$d", EMS->Loc, EMS->F, EMS->Offset);
-    EMS->resetInfo();
-  }
-
-  /// This is one of the functions used to emit data into an ELF section, so the
-  /// ARM streamer overrides it to add the appropriate mapping symbol ($d) if
-  /// necessary.
-  void EmitValueImpl(const MCExpr *Value, unsigned Size, SMLoc Loc) override {
-    if (const MCSymbolRefExpr *SRE = dyn_cast_or_null<MCSymbolRefExpr>(Value)) {
-      if (SRE->getKind() == MCSymbolRefExpr::VK_ARM_SBREL && !(Size == 4)) {
-        getContext().reportError(Loc, "relocated expression must be 32-bit");
-        return;
-      }
-      getOrCreateDataFragment();
-    }
-
-    EmitDataMappingSymbol();
-    MCELFStreamer::EmitValueImpl(Value, Size, Loc);
-  }
-
-  void EmitAssemblerFlag(MCAssemblerFlag Flag) override {
-    MCELFStreamer::EmitAssemblerFlag(Flag);
-
-    switch (Flag) {
-    case MCAF_SyntaxUnified:
-      return; // no-op here.
-    case MCAF_Code16:
-      IsThumb = true;
-      return; // Change to Thumb mode
-    case MCAF_Code32:
-      IsThumb = false;
-      return; // Change to ARM mode
-    case MCAF_Code64:
-      return;
-    case MCAF_SubsectionsViaSymbols:
-      return;
-    }
-  }
-
-private:
-  enum ElfMappingSymbol {
-    EMS_None,
-    EMS_ARM,
-    EMS_Thumb,
-    EMS_Data
-  };
-
-  struct ElfMappingSymbolInfo {
-    explicit ElfMappingSymbolInfo(SMLoc Loc, MCFragment *F, uint64_t O)
-        : Loc(Loc), F(F), Offset(O), State(EMS_None) {}
-    void resetInfo() {
-      F = nullptr;
-      Offset = 0;
-    }
-    bool hasInfo() { return F != nullptr; }
-    SMLoc Loc;
-    MCFragment *F;
-    uint64_t Offset;
-    ElfMappingSymbol State;
-  };
-
-  void EmitDataMappingSymbol() {
-    if (LastEMSInfo->State == EMS_Data)
-      return;
-    else if (LastEMSInfo->State == EMS_None) {
-      // This is a tentative symbol, it won't really be emitted until it's
-      // actually needed.
-      ElfMappingSymbolInfo *EMS = LastEMSInfo.get();
-      auto *DF = dyn_cast_or_null<MCDataFragment>(getCurrentFragment());
-      if (!DF)
-        return;
-      EMS->Loc = SMLoc();
-      EMS->F = getCurrentFragment();
-      EMS->Offset = DF->getContents().size();
-      LastEMSInfo->State = EMS_Data;
-      return;
-    }
-    EmitMappingSymbol("$d");
-    LastEMSInfo->State = EMS_Data;
-  }
-
-  void EmitThumbMappingSymbol() {
-    if (LastEMSInfo->State == EMS_Thumb)
-      return;
-    FlushPendingMappingSymbol();
-    EmitMappingSymbol("$t");
-    LastEMSInfo->State = EMS_Thumb;
-  }
-
-  void EmitARMMappingSymbol() {
-    if (LastEMSInfo->State == EMS_ARM)
-      return;
-    FlushPendingMappingSymbol();
-    EmitMappingSymbol("$a");
-    LastEMSInfo->State = EMS_ARM;
-  }
-
-  void EmitMappingSymbol(StringRef Name) {
-    auto *Symbol = cast<MCSymbolELF>(getContext().getOrCreateSymbol(
-        Name + "." + Twine(MappingSymbolCounter++)));
-    EmitLabel(Symbol);
-
-    Symbol->setType(ELF::STT_NOTYPE);
-    Symbol->setBinding(ELF::STB_LOCAL);
-    Symbol->setExternal(false);
-  }
-
-  void EmitMappingSymbol(StringRef Name, SMLoc Loc, MCFragment *F,
-                         uint64_t Offset) {
-    auto *Symbol = cast<MCSymbolELF>(getContext().getOrCreateSymbol(
-        Name + "." + Twine(MappingSymbolCounter++)));
-    EmitLabel(Symbol, Loc, F);
-    Symbol->setType(ELF::STT_NOTYPE);
-    Symbol->setBinding(ELF::STB_LOCAL);
-    Symbol->setExternal(false);
-    Symbol->setOffset(Offset);
-  }
-
-  void EmitThumbFunc(MCSymbol *Func) override {
-    getAssembler().setIsThumbFunc(Func);
-    EmitSymbolAttribute(Func, MCSA_ELF_TypeFunction);
-  }
-
-  // Helper functions for ARM exception handling directives
-  void EHReset();
-
-  // Reset state between object emissions
-  void reset() override;
-
-  void EmitPersonalityFixup(StringRef Name);
-  void FlushPendingOffset();
-  void FlushUnwindOpcodes(bool NoHandlerData);
-
-  void SwitchToEHSection(StringRef Prefix, unsigned Type, unsigned Flags,
-                         SectionKind Kind, const MCSymbol &Fn);
-  void SwitchToExTabSection(const MCSymbol &FnStart);
-  void SwitchToExIdxSection(const MCSymbol &FnStart);
-
-  void EmitFixup(const MCExpr *Expr, MCFixupKind Kind);
-
-  bool IsThumb;
-  int64_t MappingSymbolCounter = 0;
-
-  DenseMap<const MCSection *, std::unique_ptr<ElfMappingSymbolInfo>>
-      LastMappingSymbols;
-
-  std::unique_ptr<ElfMappingSymbolInfo> LastEMSInfo;
-
-  // ARM Exception Handling Frame Information
-  MCSymbol *ExTab;
-  MCSymbol *FnStart;
-  const MCSymbol *Personality;
-  unsigned PersonalityIndex;
-  unsigned FPReg; // Frame pointer register
-  int64_t FPOffset; // Offset: (final frame pointer) - (initial $sp)
-  int64_t SPOffset; // Offset: (final $sp) - (initial $sp)
-  int64_t PendingOffset; // Offset: (final $sp) - (emitted $sp)
-  bool UsedFP;
-  bool CantUnwind;
-  SmallVector<uint8_t, 64> Opcodes;
-  UnwindOpcodeAssembler UnwindOpAsm;
-};
-
-} // end anonymous namespace
-
-ARMELFStreamer &ARMTargetELFStreamer::getStreamer() {
-  return static_cast<ARMELFStreamer &>(Streamer);
-}
-
-void ARMTargetELFStreamer::emitFnStart() { getStreamer().emitFnStart(); }
-void ARMTargetELFStreamer::emitFnEnd() { getStreamer().emitFnEnd(); }
-void ARMTargetELFStreamer::emitCantUnwind() { getStreamer().emitCantUnwind(); }
-
-void ARMTargetELFStreamer::emitPersonality(const MCSymbol *Personality) {
-  getStreamer().emitPersonality(Personality);
-}
-
-void ARMTargetELFStreamer::emitPersonalityIndex(unsigned Index) {
-  getStreamer().emitPersonalityIndex(Index);
-}
-
-void ARMTargetELFStreamer::emitHandlerData() {
-  getStreamer().emitHandlerData();
-}
-
-void ARMTargetELFStreamer::emitSetFP(unsigned FpReg, unsigned SpReg,
-                                     int64_t Offset) {
-  getStreamer().emitSetFP(FpReg, SpReg, Offset);
-}
-
-void ARMTargetELFStreamer::emitMovSP(unsigned Reg, int64_t Offset) {
-  getStreamer().emitMovSP(Reg, Offset);
-}
-
-void ARMTargetELFStreamer::emitPad(int64_t Offset) {
-  getStreamer().emitPad(Offset);
-}
-
-void ARMTargetELFStreamer::emitRegSave(const SmallVectorImpl<unsigned> &RegList,
-                                       bool isVector) {
-  getStreamer().emitRegSave(RegList, isVector);
-}
-
-void ARMTargetELFStreamer::emitUnwindRaw(int64_t Offset,
-                                      const SmallVectorImpl<uint8_t> &Opcodes) {
-  getStreamer().emitUnwindRaw(Offset, Opcodes);
-}
-
-void ARMTargetELFStreamer::switchVendor(StringRef Vendor) {
-  assert(!Vendor.empty() && "Vendor cannot be empty.");
-
-  if (CurrentVendor == Vendor)
-    return;
-
-  if (!CurrentVendor.empty())
-    finishAttributeSection();
-
-  assert(Contents.empty() &&
-         ".ARM.attributes should be flushed before changing vendor");
-  CurrentVendor = Vendor;
-
-}
-
-void ARMTargetELFStreamer::emitAttribute(unsigned Attribute, unsigned Value) {
-  setAttributeItem(Attribute, Value, /* OverwriteExisting= */ true);
-}
-
-void ARMTargetELFStreamer::emitTextAttribute(unsigned Attribute,
-                                             StringRef Value) {
-  setAttributeItem(Attribute, Value, /* OverwriteExisting= */ true);
-}
-
-void ARMTargetELFStreamer::emitIntTextAttribute(unsigned Attribute,
-                                                unsigned IntValue,
-                                                StringRef StringValue) {
-  setAttributeItems(Attribute, IntValue, StringValue,
-                    /* OverwriteExisting= */ true);
-}
-
-void ARMTargetELFStreamer::emitArch(ARM::ArchKind Value) {
-  Arch = Value;
-}
-
-void ARMTargetELFStreamer::emitObjectArch(ARM::ArchKind Value) {
-  EmittedArch = Value;
-}
-
-void ARMTargetELFStreamer::emitArchDefaultAttributes() {
-  using namespace ARMBuildAttrs;
-
-  setAttributeItem(CPU_name,
-                   ARM::getCPUAttr(Arch),
-                   false);
-
-  if (EmittedArch == ARM::ArchKind::INVALID)
-    setAttributeItem(CPU_arch,
-                     ARM::getArchAttr(Arch),
-                     false);
-  else
-    setAttributeItem(CPU_arch,
-                     ARM::getArchAttr(EmittedArch),
-                     false);
-
-  switch (Arch) {
-  case ARM::ArchKind::ARMV2:
-  case ARM::ArchKind::ARMV2A:
-  case ARM::ArchKind::ARMV3:
-  case ARM::ArchKind::ARMV3M:
-  case ARM::ArchKind::ARMV4:
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    break;
-
-  case ARM::ArchKind::ARMV4T:
-  case ARM::ArchKind::ARMV5T:
-  case ARM::ArchKind::ARMV5TE:
-  case ARM::ArchKind::ARMV6:
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, Allowed, false);
-    break;
-
-  case ARM::ArchKind::ARMV6T2:
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
-    break;
-
-  case ARM::ArchKind::ARMV6K:
-  case ARM::ArchKind::ARMV6KZ:
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, Allowed, false);
-    setAttributeItem(Virtualization_use, AllowTZ, false);
-    break;
-
-  case ARM::ArchKind::ARMV6M:
-    setAttributeItem(THUMB_ISA_use, Allowed, false);
-    break;
-
-  case ARM::ArchKind::ARMV7A:
-    setAttributeItem(CPU_arch_profile, ApplicationProfile, false);
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
-    break;
-
-  case ARM::ArchKind::ARMV7R:
-    setAttributeItem(CPU_arch_profile, RealTimeProfile, false);
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
-    break;
-
-  case ARM::ArchKind::ARMV7EM:
-  case ARM::ArchKind::ARMV7M:
-    setAttributeItem(CPU_arch_profile, MicroControllerProfile, false);
-    setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
-    break;
-
-  case ARM::ArchKind::ARMV8A:
-  case ARM::ArchKind::ARMV8_1A:
-  case ARM::ArchKind::ARMV8_2A:
-  case ARM::ArchKind::ARMV8_3A:
-  case ARM::ArchKind::ARMV8_4A:
-  case ARM::ArchKind::ARMV8_5A:
-    setAttributeItem(CPU_arch_profile, ApplicationProfile, false);
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
-    setAttributeItem(MPextension_use, Allowed, false);
-    setAttributeItem(Virtualization_use, AllowTZVirtualization, false);
-    break;
-
-  case ARM::ArchKind::ARMV8MBaseline:
-  case ARM::ArchKind::ARMV8MMainline:
-    setAttributeItem(THUMB_ISA_use, AllowThumbDerived, false);
-    setAttributeItem(CPU_arch_profile, MicroControllerProfile, false);
-    break;
-
-  case ARM::ArchKind::IWMMXT:
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, Allowed, false);
-    setAttributeItem(WMMX_arch, AllowWMMXv1, false);
-    break;
-
-  case ARM::ArchKind::IWMMXT2:
-    setAttributeItem(ARM_ISA_use, Allowed, false);
-    setAttributeItem(THUMB_ISA_use, Allowed, false);
-    setAttributeItem(WMMX_arch, AllowWMMXv2, false);
-    break;
-
-  default:
-    report_fatal_error("Unknown Arch: " + Twine(ARM::getArchName(Arch)));
-    break;
-  }
-}
-
-void ARMTargetELFStreamer::emitFPU(unsigned Value) {
-  FPU = Value;
-}
-
-void ARMTargetELFStreamer::emitFPUDefaultAttributes() {
-  switch (FPU) {
-  case ARM::FK_VFP:
-  case ARM::FK_VFPV2:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv2,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_VFPV3:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3A,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_VFPV3_FP16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3A,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::FP_HP_extension,
-                     ARMBuildAttrs::AllowHPFP,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_VFPV3_D16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3B,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_VFPV3_D16_FP16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3B,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::FP_HP_extension,
-                     ARMBuildAttrs::AllowHPFP,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_VFPV3XD:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3B,
-                     /* OverwriteExisting= */ false);
-    break;
-  case ARM::FK_VFPV3XD_FP16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3B,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::FP_HP_extension,
-                     ARMBuildAttrs::AllowHPFP,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_VFPV4:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv4A,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  // ABI_HardFP_use is handled in ARMAsmPrinter, so _SP_D16 is treated the same
-  // as _D16 here.
-  case ARM::FK_FPV4_SP_D16:
-  case ARM::FK_VFPV4_D16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv4B,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_FP_ARMV8:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPARMv8A,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  // FPV5_D16 is identical to FP_ARMV8 except for the number of D registers, so
-  // uses the FP_ARMV8_D16 build attribute.
-  case ARM::FK_FPV5_SP_D16:
-  case ARM::FK_FPV5_D16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPARMv8B,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_NEON:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3A,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::Advanced_SIMD_arch,
-                     ARMBuildAttrs::AllowNeon,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_NEON_FP16:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv3A,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::Advanced_SIMD_arch,
-                     ARMBuildAttrs::AllowNeon,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::FP_HP_extension,
-                     ARMBuildAttrs::AllowHPFP,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_NEON_VFPV4:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPv4A,
-                     /* OverwriteExisting= */ false);
-    setAttributeItem(ARMBuildAttrs::Advanced_SIMD_arch,
-                     ARMBuildAttrs::AllowNeon2,
-                     /* OverwriteExisting= */ false);
-    break;
-
-  case ARM::FK_NEON_FP_ARMV8:
-  case ARM::FK_CRYPTO_NEON_FP_ARMV8:
-    setAttributeItem(ARMBuildAttrs::FP_arch,
-                     ARMBuildAttrs::AllowFPARMv8A,
-                     /* OverwriteExisting= */ false);
-    // 'Advanced_SIMD_arch' must be emitted not here, but within
-    // ARMAsmPrinter::emitAttributes(), depending on hasV8Ops() and hasV8_1a()
-    break;
-
-  case ARM::FK_SOFTVFP:
-  case ARM::FK_NONE:
-    break;
-
-  default:
-    report_fatal_error("Unknown FPU: " + Twine(FPU));
-    break;
-  }
-}
-
-size_t ARMTargetELFStreamer::calculateContentSize() const {
-  size_t Result = 0;
-  for (size_t i = 0; i < Contents.size(); ++i) {
-    AttributeItem item = Contents[i];
-    switch (item.Type) {
-    case AttributeItem::HiddenAttribute:
-      break;
-    case AttributeItem::NumericAttribute:
-      Result += getULEB128Size(item.Tag);
-      Result += getULEB128Size(item.IntValue);
-      break;
-    case AttributeItem::TextAttribute:
-      Result += getULEB128Size(item.Tag);
-      Result += item.StringValue.size() + 1; // string + '\0'
-      break;
-    case AttributeItem::NumericAndTextAttributes:
-      Result += getULEB128Size(item.Tag);
-      Result += getULEB128Size(item.IntValue);
-      Result += item.StringValue.size() + 1; // string + '\0';
-      break;
-    }
-  }
-  return Result;
-}
-
-void ARMTargetELFStreamer::finishAttributeSection() {
-  // <format-version>
-  // [ <section-length> "vendor-name"
-  // [ <file-tag> <size> <attribute>*
-  //   | <section-tag> <size> <section-number>* 0 <attribute>*
-  //   | <symbol-tag> <size> <symbol-number>* 0 <attribute>*
-  //   ]+
-  // ]*
-
-  if (FPU != ARM::FK_INVALID)
-    emitFPUDefaultAttributes();
-
-  if (Arch != ARM::ArchKind::INVALID)
-    emitArchDefaultAttributes();
-
-  if (Contents.empty())
-    return;
-
-  llvm::sort(Contents, AttributeItem::LessTag);
-
-  ARMELFStreamer &Streamer = getStreamer();
-
-  // Switch to .ARM.attributes section
-  if (AttributeSection) {
-    Streamer.SwitchSection(AttributeSection);
-  } else {
-    AttributeSection = Streamer.getContext().getELFSection(
-        ".ARM.attributes", ELF::SHT_ARM_ATTRIBUTES, 0);
-    Streamer.SwitchSection(AttributeSection);
-
-    // Format version
-    Streamer.EmitIntValue(0x41, 1);
-  }
-
-  // Vendor size + Vendor name + '\0'
-  const size_t VendorHeaderSize = 4 + CurrentVendor.size() + 1;
-
-  // Tag + Tag Size
-  const size_t TagHeaderSize = 1 + 4;
-
-  const size_t ContentsSize = calculateContentSize();
-
-  Streamer.EmitIntValue(VendorHeaderSize + TagHeaderSize + ContentsSize, 4);
-  Streamer.EmitBytes(CurrentVendor);
-  Streamer.EmitIntValue(0, 1); // '\0'
-
-  Streamer.EmitIntValue(ARMBuildAttrs::File, 1);
-  Streamer.EmitIntValue(TagHeaderSize + ContentsSize, 4);
-
-  // Size should have been accounted for already, now
-  // emit each field as its type (ULEB or String)
-  for (size_t i = 0; i < Contents.size(); ++i) {
-    AttributeItem item = Contents[i];
-    Streamer.EmitULEB128IntValue(item.Tag);
-    switch (item.Type) {
-    default: llvm_unreachable("Invalid attribute type");
-    case AttributeItem::NumericAttribute:
-      Streamer.EmitULEB128IntValue(item.IntValue);
-      break;
-    case AttributeItem::TextAttribute:
-      Streamer.EmitBytes(item.StringValue);
-      Streamer.EmitIntValue(0, 1); // '\0'
-      break;
-    case AttributeItem::NumericAndTextAttributes:
-      Streamer.EmitULEB128IntValue(item.IntValue);
-      Streamer.EmitBytes(item.StringValue);
-      Streamer.EmitIntValue(0, 1); // '\0'
-      break;
-    }
-  }
-
-  Contents.clear();
-  FPU = ARM::FK_INVALID;
-}
-
-void ARMTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
-  ARMELFStreamer &Streamer = getStreamer();
-  if (!Streamer.IsThumb)
-    return;
-
-  Streamer.getAssembler().registerSymbol(*Symbol);
-  unsigned Type = cast<MCSymbolELF>(Symbol)->getType();
-  if (Type == ELF::STT_FUNC || Type == ELF::STT_GNU_IFUNC)
-    Streamer.EmitThumbFunc(Symbol);
-}
-
-void
-ARMTargetELFStreamer::AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *S) {
-  getStreamer().EmitFixup(S, FK_Data_4);
-}
-
-void ARMTargetELFStreamer::emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) {
-  if (const MCSymbolRefExpr *SRE = dyn_cast<MCSymbolRefExpr>(Value)) {
-    const MCSymbol &Sym = SRE->getSymbol();
-    if (!Sym.isDefined()) {
-      getStreamer().EmitAssignment(Symbol, Value);
-      return;
-    }
-  }
-
-  getStreamer().EmitThumbFunc(Symbol);
-  getStreamer().EmitAssignment(Symbol, Value);
-}
-
-void ARMTargetELFStreamer::emitInst(uint32_t Inst, char Suffix) {
-  getStreamer().emitInst(Inst, Suffix);
-}
-
-void ARMTargetELFStreamer::reset() { AttributeSection = nullptr; }
-
-void ARMELFStreamer::FinishImpl() {
-  MCTargetStreamer &TS = *getTargetStreamer();
-  ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS);
-  ATS.finishAttributeSection();
-
-  MCELFStreamer::FinishImpl();
-}
-
-void ARMELFStreamer::reset() {
-  MCTargetStreamer &TS = *getTargetStreamer();
-  ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS);
-  ATS.reset();
-  MappingSymbolCounter = 0;
-  MCELFStreamer::reset();
-  LastMappingSymbols.clear();
-  LastEMSInfo.reset();
-  // MCELFStreamer clear's the assembler's e_flags. However, for
-  // arm we manually set the ABI version on streamer creation, so
-  // do the same here
-  getAssembler().setELFHeaderEFlags(ELF::EF_ARM_EABI_VER5);
-}
-
-inline void ARMELFStreamer::SwitchToEHSection(StringRef Prefix,
-                                              unsigned Type,
-                                              unsigned Flags,
-                                              SectionKind Kind,
-                                              const MCSymbol &Fn) {
-  const MCSectionELF &FnSection =
-    static_cast<const MCSectionELF &>(Fn.getSection());
-
-  // Create the name for new section
-  StringRef FnSecName(FnSection.getSectionName());
-  SmallString<128> EHSecName(Prefix);
-  if (FnSecName != ".text") {
-    EHSecName += FnSecName;
-  }
-
-  // Get .ARM.extab or .ARM.exidx section
-  const MCSymbolELF *Group = FnSection.getGroup();
-  if (Group)
-    Flags |= ELF::SHF_GROUP;
-  MCSectionELF *EHSection = getContext().getELFSection(
-      EHSecName, Type, Flags, 0, Group, FnSection.getUniqueID(),
-      static_cast<const MCSymbolELF *>(&Fn));
-
-  assert(EHSection && "Failed to get the required EH section");
-
-  // Switch to .ARM.extab or .ARM.exidx section
-  SwitchSection(EHSection);
-  EmitCodeAlignment(4);
-}
-
-inline void ARMELFStreamer::SwitchToExTabSection(const MCSymbol &FnStart) {
-  SwitchToEHSection(".ARM.extab", ELF::SHT_PROGBITS, ELF::SHF_ALLOC,
-                    SectionKind::getData(), FnStart);
-}
-
-inline void ARMELFStreamer::SwitchToExIdxSection(const MCSymbol &FnStart) {
-  SwitchToEHSection(".ARM.exidx", ELF::SHT_ARM_EXIDX,
-                    ELF::SHF_ALLOC | ELF::SHF_LINK_ORDER,
-                    SectionKind::getData(), FnStart);
-}
-
-void ARMELFStreamer::EmitFixup(const MCExpr *Expr, MCFixupKind Kind) {
-  MCDataFragment *Frag = getOrCreateDataFragment();
-  Frag->getFixups().push_back(MCFixup::create(Frag->getContents().size(), Expr,
-                                              Kind));
-}
-
-void ARMELFStreamer::EHReset() {
-  ExTab = nullptr;
-  FnStart = nullptr;
-  Personality = nullptr;
-  PersonalityIndex = ARM::EHABI::NUM_PERSONALITY_INDEX;
-  FPReg = ARM::SP;
-  FPOffset = 0;
-  SPOffset = 0;
-  PendingOffset = 0;
-  UsedFP = false;
-  CantUnwind = false;
-
-  Opcodes.clear();
-  UnwindOpAsm.Reset();
-}
-
-void ARMELFStreamer::emitFnStart() {
-  assert(FnStart == nullptr);
-  FnStart = getContext().createTempSymbol();
-  EmitLabel(FnStart);
-}
-
-void ARMELFStreamer::emitFnEnd() {
-  assert(FnStart && ".fnstart must precedes .fnend");
-
-  // Emit unwind opcodes if there is no .handlerdata directive
-  if (!ExTab && !CantUnwind)
-    FlushUnwindOpcodes(true);
-
-  // Emit the exception index table entry
-  SwitchToExIdxSection(*FnStart);
-
-  if (PersonalityIndex < ARM::EHABI::NUM_PERSONALITY_INDEX)
-    EmitPersonalityFixup(GetAEABIUnwindPersonalityName(PersonalityIndex));
-
-  const MCSymbolRefExpr *FnStartRef =
-    MCSymbolRefExpr::create(FnStart,
-                            MCSymbolRefExpr::VK_ARM_PREL31,
-                            getContext());
-
-  EmitValue(FnStartRef, 4);
-
-  if (CantUnwind) {
-    EmitIntValue(ARM::EHABI::EXIDX_CANTUNWIND, 4);
-  } else if (ExTab) {
-    // Emit a reference to the unwind opcodes in the ".ARM.extab" section.
-    const MCSymbolRefExpr *ExTabEntryRef =
-      MCSymbolRefExpr::create(ExTab,
-                              MCSymbolRefExpr::VK_ARM_PREL31,
-                              getContext());
-    EmitValue(ExTabEntryRef, 4);
-  } else {
-    // For the __aeabi_unwind_cpp_pr0, we have to emit the unwind opcodes in
-    // the second word of exception index table entry.  The size of the unwind
-    // opcodes should always be 4 bytes.
-    assert(PersonalityIndex == ARM::EHABI::AEABI_UNWIND_CPP_PR0 &&
-           "Compact model must use __aeabi_unwind_cpp_pr0 as personality");
-    assert(Opcodes.size() == 4u &&
-           "Unwind opcode size for __aeabi_unwind_cpp_pr0 must be equal to 4");
-    uint64_t Intval = Opcodes[0] |
-                      Opcodes[1] << 8 |
-                      Opcodes[2] << 16 |
-                      Opcodes[3] << 24;
-    EmitIntValue(Intval, Opcodes.size());
-  }
-
-  // Switch to the section containing FnStart
-  SwitchSection(&FnStart->getSection());
-
-  // Clean exception handling frame information
-  EHReset();
-}
-
-void ARMELFStreamer::emitCantUnwind() { CantUnwind = true; }
-
-// Add the R_ARM_NONE fixup at the same position
-void ARMELFStreamer::EmitPersonalityFixup(StringRef Name) {
-  const MCSymbol *PersonalitySym = getContext().getOrCreateSymbol(Name);
-
-  const MCSymbolRefExpr *PersonalityRef = MCSymbolRefExpr::create(
-      PersonalitySym, MCSymbolRefExpr::VK_ARM_NONE, getContext());
-
-  visitUsedExpr(*PersonalityRef);
-  MCDataFragment *DF = getOrCreateDataFragment();
-  DF->getFixups().push_back(MCFixup::create(DF->getContents().size(),
-                                            PersonalityRef,
-                                            MCFixup::getKindForSize(4, false)));
-}
-
-void ARMELFStreamer::FlushPendingOffset() {
-  if (PendingOffset != 0) {
-    UnwindOpAsm.EmitSPOffset(-PendingOffset);
-    PendingOffset = 0;
-  }
-}
-
-void ARMELFStreamer::FlushUnwindOpcodes(bool NoHandlerData) {
-  // Emit the unwind opcode to restore $sp.
-  if (UsedFP) {
-    const MCRegisterInfo *MRI = getContext().getRegisterInfo();
-    int64_t LastRegSaveSPOffset = SPOffset - PendingOffset;
-    UnwindOpAsm.EmitSPOffset(LastRegSaveSPOffset - FPOffset);
-    UnwindOpAsm.EmitSetSP(MRI->getEncodingValue(FPReg));
-  } else {
-    FlushPendingOffset();
-  }
-
-  // Finalize the unwind opcode sequence
-  UnwindOpAsm.Finalize(PersonalityIndex, Opcodes);
-
-  // For compact model 0, we have to emit the unwind opcodes in the .ARM.exidx
-  // section.  Thus, we don't have to create an entry in the .ARM.extab
-  // section.
-  if (NoHandlerData && PersonalityIndex == ARM::EHABI::AEABI_UNWIND_CPP_PR0)
-    return;
-
-  // Switch to .ARM.extab section.
-  SwitchToExTabSection(*FnStart);
-
-  // Create .ARM.extab label for offset in .ARM.exidx
-  assert(!ExTab);
-  ExTab = getContext().createTempSymbol();
-  EmitLabel(ExTab);
-
-  // Emit personality
-  if (Personality) {
-    const MCSymbolRefExpr *PersonalityRef =
-      MCSymbolRefExpr::create(Personality,
-                              MCSymbolRefExpr::VK_ARM_PREL31,
-                              getContext());
-
-    EmitValue(PersonalityRef, 4);
-  }
-
-  // Emit unwind opcodes
-  assert((Opcodes.size() % 4) == 0 &&
-         "Unwind opcode size for __aeabi_cpp_unwind_pr0 must be multiple of 4");
-  for (unsigned I = 0; I != Opcodes.size(); I += 4) {
-    uint64_t Intval = Opcodes[I] |
-                      Opcodes[I + 1] << 8 |
-                      Opcodes[I + 2] << 16 |
-                      Opcodes[I + 3] << 24;
-    EmitIntValue(Intval, 4);
-  }
-
-  // According to ARM EHABI section 9.2, if the __aeabi_unwind_cpp_pr1() or
-  // __aeabi_unwind_cpp_pr2() is used, then the handler data must be emitted
-  // after the unwind opcodes.  The handler data consists of several 32-bit
-  // words, and should be terminated by zero.
-  //
-  // In case that the .handlerdata directive is not specified by the
-  // programmer, we should emit zero to terminate the handler data.
-  if (NoHandlerData && !Personality)
-    EmitIntValue(0, 4);
-}
-
-void ARMELFStreamer::emitHandlerData() { FlushUnwindOpcodes(false); }
-
-void ARMELFStreamer::emitPersonality(const MCSymbol *Per) {
-  Personality = Per;
-  UnwindOpAsm.setPersonality(Per);
-}
-
-void ARMELFStreamer::emitPersonalityIndex(unsigned Index) {
-  assert(Index < ARM::EHABI::NUM_PERSONALITY_INDEX && "invalid index");
-  PersonalityIndex = Index;
-}
-
-void ARMELFStreamer::emitSetFP(unsigned NewFPReg, unsigned NewSPReg,
-                               int64_t Offset) {
-  assert((NewSPReg == ARM::SP || NewSPReg == FPReg) &&
-         "the operand of .setfp directive should be either $sp or $fp");
-
-  UsedFP = true;
-  FPReg = NewFPReg;
-
-  if (NewSPReg == ARM::SP)
-    FPOffset = SPOffset + Offset;
-  else
-    FPOffset += Offset;
-}
-
-void ARMELFStreamer::emitMovSP(unsigned Reg, int64_t Offset) {
-  assert((Reg != ARM::SP && Reg != ARM::PC) &&
-         "the operand of .movsp cannot be either sp or pc");
-  assert(FPReg == ARM::SP && "current FP must be SP");
-
-  FlushPendingOffset();
-
-  FPReg = Reg;
-  FPOffset = SPOffset + Offset;
-
-  const MCRegisterInfo *MRI = getContext().getRegisterInfo();
-  UnwindOpAsm.EmitSetSP(MRI->getEncodingValue(FPReg));
-}
-
-void ARMELFStreamer::emitPad(int64_t Offset) {
-  // Track the change of the $sp offset
-  SPOffset -= Offset;
-
-  // To squash multiple .pad directives, we should delay the unwind opcode
-  // until the .save, .vsave, .handlerdata, or .fnend directives.
-  PendingOffset -= Offset;
-}
-
-void ARMELFStreamer::emitRegSave(const SmallVectorImpl<unsigned> &RegList,
-                                 bool IsVector) {
-  // Collect the registers in the register list
-  unsigned Count = 0;
-  uint32_t Mask = 0;
-  const MCRegisterInfo *MRI = getContext().getRegisterInfo();
-  for (size_t i = 0; i < RegList.size(); ++i) {
-    unsigned Reg = MRI->getEncodingValue(RegList[i]);
-    assert(Reg < (IsVector ? 32U : 16U) && "Register out of range");
-    unsigned Bit = (1u << Reg);
-    if ((Mask & Bit) == 0) {
-      Mask |= Bit;
-      ++Count;
-    }
-  }
-
-  // Track the change the $sp offset: For the .save directive, the
-  // corresponding push instruction will decrease the $sp by (4 * Count).
-  // For the .vsave directive, the corresponding vpush instruction will
-  // decrease $sp by (8 * Count).
-  SPOffset -= Count * (IsVector ? 8 : 4);
-
-  // Emit the opcode
-  FlushPendingOffset();
-  if (IsVector)
-    UnwindOpAsm.EmitVFPRegSave(Mask);
-  else
-    UnwindOpAsm.EmitRegSave(Mask);
-}
-
-void ARMELFStreamer::emitUnwindRaw(int64_t Offset,
-                                   const SmallVectorImpl<uint8_t> &Opcodes) {
-  FlushPendingOffset();
-  SPOffset = SPOffset - Offset;
-  UnwindOpAsm.EmitRaw(Opcodes);
-}
-
-namespace llvm {
-
-MCTargetStreamer *createARMTargetAsmStreamer(MCStreamer &S,
-                                             formatted_raw_ostream &OS,
-                                             MCInstPrinter *InstPrint,
-                                             bool isVerboseAsm) {
-  return new ARMTargetAsmStreamer(S, OS, *InstPrint, isVerboseAsm);
-}
-
-MCTargetStreamer *createARMNullTargetStreamer(MCStreamer &S) {
-  return new ARMTargetStreamer(S);
-}
-
-MCTargetStreamer *createARMObjectTargetStreamer(MCStreamer &S,
-                                                const MCSubtargetInfo &STI) {
-  const Triple &TT = STI.getTargetTriple();
-  if (TT.isOSBinFormatELF())
-    return new ARMTargetELFStreamer(S);
-  return new ARMTargetStreamer(S);
-}
-
-MCELFStreamer *createARMELFStreamer(MCContext &Context,
-                                    std::unique_ptr<MCAsmBackend> TAB,
-                                    std::unique_ptr<MCObjectWriter> OW,
-                                    std::unique_ptr<MCCodeEmitter> Emitter,
-                                    bool RelaxAll, bool IsThumb) {
-  ARMELFStreamer *S = new ARMELFStreamer(Context, std::move(TAB), std::move(OW),
-                                         std::move(Emitter), IsThumb);
-  // FIXME: This should eventually end up somewhere else where more
-  // intelligent flag decisions can be made. For now we are just maintaining
-  // the status quo for ARM and setting EF_ARM_EABI_VER5 as the default.
-  S->getAssembler().setELFHeaderEFlags(ELF::EF_ARM_EABI_VER5);
-
-  if (RelaxAll)
-    S->getAssembler().setRelaxAll(true);
-  return S;
-}
-
-} // end namespace llvm