1 files changed, 0 insertions, 1821 deletions

diff --git a/contrib/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/contrib/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
deleted file mode 100644
index 4c8f75b237aa..000000000000
--- a/contrib/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ /dev/null
@@ -1,1821 +0,0 @@
-//===- llvm/CodeGen/TargetLoweringObjectFileImpl.cpp - Object File Info ---===//
-//
-// 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 implements classes used to handle lowerings specific to common
-// object file formats.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/BinaryFormat/COFF.h"
-#include "llvm/BinaryFormat/Dwarf.h"
-#include "llvm/BinaryFormat/ELF.h"
-#include "llvm/BinaryFormat/MachO.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/CodeGen/MachineModuleInfoImpls.h"
-#include "llvm/IR/Comdat.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/Function.h"
-#include "llvm/IR/GlobalAlias.h"
-#include "llvm/IR/GlobalObject.h"
-#include "llvm/IR/GlobalValue.h"
-#include "llvm/IR/GlobalVariable.h"
-#include "llvm/IR/Mangler.h"
-#include "llvm/IR/Metadata.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Type.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCSectionCOFF.h"
-#include "llvm/MC/MCSectionELF.h"
-#include "llvm/MC/MCSectionMachO.h"
-#include "llvm/MC/MCSectionWasm.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCSymbolELF.h"
-#include "llvm/MC/MCValue.h"
-#include "llvm/MC/SectionKind.h"
-#include "llvm/ProfileData/InstrProf.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/CodeGen.h"
-#include "llvm/Support/Format.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetMachine.h"
-#include <cassert>
-#include <string>
-
-using namespace llvm;
-using namespace dwarf;
-
-static void GetObjCImageInfo(Module &M, unsigned &Version, unsigned &Flags,
-                             StringRef &Section) {
-  SmallVector<Module::ModuleFlagEntry, 8> ModuleFlags;
-  M.getModuleFlagsMetadata(ModuleFlags);
-
-  for (const auto &MFE: ModuleFlags) {
-    // Ignore flags with 'Require' behaviour.
-    if (MFE.Behavior == Module::Require)
-      continue;
-
-    StringRef Key = MFE.Key->getString();
-    if (Key == "Objective-C Image Info Version") {
-      Version = mdconst::extract<ConstantInt>(MFE.Val)->getZExtValue();
-    } else if (Key == "Objective-C Garbage Collection" ||
-               Key == "Objective-C GC Only" ||
-               Key == "Objective-C Is Simulated" ||
-               Key == "Objective-C Class Properties" ||
-               Key == "Objective-C Image Swift Version") {
-      Flags |= mdconst::extract<ConstantInt>(MFE.Val)->getZExtValue();
-    } else if (Key == "Objective-C Image Info Section") {
-      Section = cast<MDString>(MFE.Val)->getString();
-    }
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//                                  ELF
-//===----------------------------------------------------------------------===//
-
-void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
-                                             const TargetMachine &TgtM) {
-  TargetLoweringObjectFile::Initialize(Ctx, TgtM);
-  TM = &TgtM;
-
-  CodeModel::Model CM = TgtM.getCodeModel();
-
-  switch (TgtM.getTargetTriple().getArch()) {
-  case Triple::arm:
-  case Triple::armeb:
-  case Triple::thumb:
-  case Triple::thumbeb:
-    if (Ctx.getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
-      break;
-    // Fallthrough if not using EHABI
-    LLVM_FALLTHROUGH;
-  case Triple::ppc:
-  case Triple::x86:
-    PersonalityEncoding = isPositionIndependent()
-                              ? dwarf::DW_EH_PE_indirect |
-                                    dwarf::DW_EH_PE_pcrel |
-                                    dwarf::DW_EH_PE_sdata4
-                              : dwarf::DW_EH_PE_absptr;
-    LSDAEncoding = isPositionIndependent()
-                       ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
-                       : dwarf::DW_EH_PE_absptr;
-    TTypeEncoding = isPositionIndependent()
-                        ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-                              dwarf::DW_EH_PE_sdata4
-                        : dwarf::DW_EH_PE_absptr;
-    break;
-  case Triple::x86_64:
-    if (isPositionIndependent()) {
-      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        ((CM == CodeModel::Small || CM == CodeModel::Medium)
-         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
-      LSDAEncoding = dwarf::DW_EH_PE_pcrel |
-        (CM == CodeModel::Small
-         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
-      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        ((CM == CodeModel::Small || CM == CodeModel::Medium)
-         ? dwarf::DW_EH_PE_sdata8 : dwarf::DW_EH_PE_sdata4);
-    } else {
-      PersonalityEncoding =
-        (CM == CodeModel::Small || CM == CodeModel::Medium)
-        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
-      LSDAEncoding = (CM == CodeModel::Small)
-        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
-      TTypeEncoding = (CM == CodeModel::Small)
-        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
-    }
-    break;
-  case Triple::hexagon:
-    PersonalityEncoding = dwarf::DW_EH_PE_absptr;
-    LSDAEncoding = dwarf::DW_EH_PE_absptr;
-    TTypeEncoding = dwarf::DW_EH_PE_absptr;
-    if (isPositionIndependent()) {
-      PersonalityEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel;
-      LSDAEncoding |= dwarf::DW_EH_PE_pcrel;
-      TTypeEncoding |= dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel;
-    }
-    break;
-  case Triple::aarch64:
-  case Triple::aarch64_be:
-    // The small model guarantees static code/data size < 4GB, but not where it
-    // will be in memory. Most of these could end up >2GB away so even a signed
-    // pc-relative 32-bit address is insufficient, theoretically.
-    if (isPositionIndependent()) {
-      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata8;
-      LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
-      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata8;
-    } else {
-      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
-      LSDAEncoding = dwarf::DW_EH_PE_absptr;
-      TTypeEncoding = dwarf::DW_EH_PE_absptr;
-    }
-    break;
-  case Triple::lanai:
-    LSDAEncoding = dwarf::DW_EH_PE_absptr;
-    PersonalityEncoding = dwarf::DW_EH_PE_absptr;
-    TTypeEncoding = dwarf::DW_EH_PE_absptr;
-    break;
-  case Triple::mips:
-  case Triple::mipsel:
-  case Triple::mips64:
-  case Triple::mips64el:
-    // MIPS uses indirect pointer to refer personality functions and types, so
-    // that the eh_frame section can be read-only. DW.ref.personality will be
-    // generated for relocation.
-    PersonalityEncoding = dwarf::DW_EH_PE_indirect;
-    // FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
-    //        identify N64 from just a triple.
-    TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-                    dwarf::DW_EH_PE_sdata4;
-    // We don't support PC-relative LSDA references in GAS so we use the default
-    // DW_EH_PE_absptr for those.
-
-    // FreeBSD must be explicit about the data size and using pcrel since it's
-    // assembler/linker won't do the automatic conversion that the Linux tools
-    // do.
-    if (TgtM.getTargetTriple().isOSFreeBSD()) {
-      PersonalityEncoding |= dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-      LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-    }
-    break;
-  case Triple::ppc64:
-  case Triple::ppc64le:
-    PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-      dwarf::DW_EH_PE_udata8;
-    LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
-    TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-      dwarf::DW_EH_PE_udata8;
-    break;
-  case Triple::sparcel:
-  case Triple::sparc:
-    if (isPositionIndependent()) {
-      LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata4;
-      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata4;
-    } else {
-      LSDAEncoding = dwarf::DW_EH_PE_absptr;
-      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
-      TTypeEncoding = dwarf::DW_EH_PE_absptr;
-    }
-    CallSiteEncoding = dwarf::DW_EH_PE_udata4;
-    break;
-  case Triple::riscv32:
-  case Triple::riscv64:
-    LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-    PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-                          dwarf::DW_EH_PE_sdata4;
-    TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-                    dwarf::DW_EH_PE_sdata4;
-    CallSiteEncoding = dwarf::DW_EH_PE_udata4;
-    break;
-  case Triple::sparcv9:
-    LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-    if (isPositionIndependent()) {
-      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata4;
-      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata4;
-    } else {
-      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
-      TTypeEncoding = dwarf::DW_EH_PE_absptr;
-    }
-    break;
-  case Triple::systemz:
-    // All currently-defined code models guarantee that 4-byte PC-relative
-    // values will be in range.
-    if (isPositionIndependent()) {
-      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata4;
-      LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
-        dwarf::DW_EH_PE_sdata4;
-    } else {
-      PersonalityEncoding = dwarf::DW_EH_PE_absptr;
-      LSDAEncoding = dwarf::DW_EH_PE_absptr;
-      TTypeEncoding = dwarf::DW_EH_PE_absptr;
-    }
-    break;
-  default:
-    break;
-  }
-}
-
-void TargetLoweringObjectFileELF::emitModuleMetadata(MCStreamer &Streamer,
-                                                     Module &M) const {
-  auto &C = getContext();
-
-  if (NamedMDNode *LinkerOptions = M.getNamedMetadata("llvm.linker.options")) {
-    auto *S = C.getELFSection(".linker-options", ELF::SHT_LLVM_LINKER_OPTIONS,
-                              ELF::SHF_EXCLUDE);
-
-    Streamer.SwitchSection(S);
-
-    for (const auto &Operand : LinkerOptions->operands()) {
-      if (cast<MDNode>(Operand)->getNumOperands() != 2)
-        report_fatal_error("invalid llvm.linker.options");
-      for (const auto &Option : cast<MDNode>(Operand)->operands()) {
-        Streamer.EmitBytes(cast<MDString>(Option)->getString());
-        Streamer.EmitIntValue(0, 1);
-      }
-    }
-  }
-
-  if (NamedMDNode *DependentLibraries = M.getNamedMetadata("llvm.dependent-libraries")) {
-    auto *S = C.getELFSection(".deplibs", ELF::SHT_LLVM_DEPENDENT_LIBRARIES,
-                              ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
-
-    Streamer.SwitchSection(S);
-
-    for (const auto &Operand : DependentLibraries->operands()) {
-      Streamer.EmitBytes(
-          cast<MDString>(cast<MDNode>(Operand)->getOperand(0))->getString());
-      Streamer.EmitIntValue(0, 1);
-    }
-  }
-
-  unsigned Version = 0;
-  unsigned Flags = 0;
-  StringRef Section;
-
-  GetObjCImageInfo(M, Version, Flags, Section);
-  if (!Section.empty()) {
-    auto *S = C.getELFSection(Section, ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
-    Streamer.SwitchSection(S);
-    Streamer.EmitLabel(C.getOrCreateSymbol(StringRef("OBJC_IMAGE_INFO")));
-    Streamer.EmitIntValue(Version, 4);
-    Streamer.EmitIntValue(Flags, 4);
-    Streamer.AddBlankLine();
-  }
-
-  SmallVector<Module::ModuleFlagEntry, 8> ModuleFlags;
-  M.getModuleFlagsMetadata(ModuleFlags);
-
-  MDNode *CFGProfile = nullptr;
-
-  for (const auto &MFE : ModuleFlags) {
-    StringRef Key = MFE.Key->getString();
-    if (Key == "CG Profile") {
-      CFGProfile = cast<MDNode>(MFE.Val);
-      break;
-    }
-  }
-
-  if (!CFGProfile)
-    return;
-
-  auto GetSym = [this](const MDOperand &MDO) -> MCSymbol * {
-    if (!MDO)
-      return nullptr;
-    auto V = cast<ValueAsMetadata>(MDO);
-    const Function *F = cast<Function>(V->getValue());
-    return TM->getSymbol(F);
-  };
-
-  for (const auto &Edge : CFGProfile->operands()) {
-    MDNode *E = cast<MDNode>(Edge);
-    const MCSymbol *From = GetSym(E->getOperand(0));
-    const MCSymbol *To = GetSym(E->getOperand(1));
-    // Skip null functions. This can happen if functions are dead stripped after
-    // the CGProfile pass has been run.
-    if (!From || !To)
-      continue;
-    uint64_t Count = cast<ConstantAsMetadata>(E->getOperand(2))
-                         ->getValue()
-                         ->getUniqueInteger()
-                         .getZExtValue();
-    Streamer.emitCGProfileEntry(
-        MCSymbolRefExpr::create(From, MCSymbolRefExpr::VK_None, C),
-        MCSymbolRefExpr::create(To, MCSymbolRefExpr::VK_None, C), Count);
-  }
-}
-
-MCSymbol *TargetLoweringObjectFileELF::getCFIPersonalitySymbol(
-    const GlobalValue *GV, const TargetMachine &TM,
-    MachineModuleInfo *MMI) const {
-  unsigned Encoding = getPersonalityEncoding();
-  if ((Encoding & 0x80) == DW_EH_PE_indirect)
-    return getContext().getOrCreateSymbol(StringRef("DW.ref.") +
-                                          TM.getSymbol(GV)->getName());
-  if ((Encoding & 0x70) == DW_EH_PE_absptr)
-    return TM.getSymbol(GV);
-  report_fatal_error("We do not support this DWARF encoding yet!");
-}
-
-void TargetLoweringObjectFileELF::emitPersonalityValue(
-    MCStreamer &Streamer, const DataLayout &DL, const MCSymbol *Sym) const {
-  SmallString<64> NameData("DW.ref.");
-  NameData += Sym->getName();
-  MCSymbolELF *Label =
-      cast<MCSymbolELF>(getContext().getOrCreateSymbol(NameData));
-  Streamer.EmitSymbolAttribute(Label, MCSA_Hidden);
-  Streamer.EmitSymbolAttribute(Label, MCSA_Weak);
-  unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_GROUP;
-  MCSection *Sec = getContext().getELFNamedSection(".data", Label->getName(),
-                                                   ELF::SHT_PROGBITS, Flags, 0);
-  unsigned Size = DL.getPointerSize();
-  Streamer.SwitchSection(Sec);
-  Streamer.EmitValueToAlignment(DL.getPointerABIAlignment(0));
-  Streamer.EmitSymbolAttribute(Label, MCSA_ELF_TypeObject);
-  const MCExpr *E = MCConstantExpr::create(Size, getContext());
-  Streamer.emitELFSize(Label, E);
-  Streamer.EmitLabel(Label);
-
-  Streamer.EmitSymbolValue(Sym, Size);
-}
-
-const MCExpr *TargetLoweringObjectFileELF::getTTypeGlobalReference(
-    const GlobalValue *GV, unsigned Encoding, const TargetMachine &TM,
-    MachineModuleInfo *MMI, MCStreamer &Streamer) const {
-  if (Encoding & DW_EH_PE_indirect) {
-    MachineModuleInfoELF &ELFMMI = MMI->getObjFileInfo<MachineModuleInfoELF>();
-
-    MCSymbol *SSym = getSymbolWithGlobalValueBase(GV, ".DW.stub", TM);
-
-    // Add information about the stub reference to ELFMMI so that the stub
-    // gets emitted by the asmprinter.
-    MachineModuleInfoImpl::StubValueTy &StubSym = ELFMMI.getGVStubEntry(SSym);
-    if (!StubSym.getPointer()) {
-      MCSymbol *Sym = TM.getSymbol(GV);
-      StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
-    }
-
-    return TargetLoweringObjectFile::
-      getTTypeReference(MCSymbolRefExpr::create(SSym, getContext()),
-                        Encoding & ~DW_EH_PE_indirect, Streamer);
-  }
-
-  return TargetLoweringObjectFile::getTTypeGlobalReference(GV, Encoding, TM,
-                                                           MMI, Streamer);
-}
-
-static SectionKind getELFKindForNamedSection(StringRef Name, SectionKind K) {
-  // N.B.: The defaults used in here are not the same ones used in MC.
-  // We follow gcc, MC follows gas. For example, given ".section .eh_frame",
-  // both gas and MC will produce a section with no flags. Given
-  // section(".eh_frame") gcc will produce:
-  //
-  //   .section   .eh_frame,"a",@progbits
-
-  if (Name == getInstrProfSectionName(IPSK_covmap, Triple::ELF,
-                                      /*AddSegmentInfo=*/false))
-    return SectionKind::getMetadata();
-
-  if (Name.empty() || Name[0] != '.') return K;
-
-  // Default implementation based on some magic section names.
-  if (Name == ".bss" ||
-      Name.startswith(".bss.") ||
-      Name.startswith(".gnu.linkonce.b.") ||
-      Name.startswith(".llvm.linkonce.b.") ||
-      Name == ".sbss" ||
-      Name.startswith(".sbss.") ||
-      Name.startswith(".gnu.linkonce.sb.") ||
-      Name.startswith(".llvm.linkonce.sb."))
-    return SectionKind::getBSS();
-
-  if (Name == ".tdata" ||
-      Name.startswith(".tdata.") ||
-      Name.startswith(".gnu.linkonce.td.") ||
-      Name.startswith(".llvm.linkonce.td."))
-    return SectionKind::getThreadData();
-
-  if (Name == ".tbss" ||
-      Name.startswith(".tbss.") ||
-      Name.startswith(".gnu.linkonce.tb.") ||
-      Name.startswith(".llvm.linkonce.tb."))
-    return SectionKind::getThreadBSS();
-
-  return K;
-}
-
-static unsigned getELFSectionType(StringRef Name, SectionKind K) {
-  // Use SHT_NOTE for section whose name starts with ".note" to allow
-  // emitting ELF notes from C variable declaration.
-  // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77609
-  if (Name.startswith(".note"))
-    return ELF::SHT_NOTE;
-
-  if (Name == ".init_array")
-    return ELF::SHT_INIT_ARRAY;
-
-  if (Name == ".fini_array")
-    return ELF::SHT_FINI_ARRAY;
-
-  if (Name == ".preinit_array")
-    return ELF::SHT_PREINIT_ARRAY;
-
-  if (K.isBSS() || K.isThreadBSS())
-    return ELF::SHT_NOBITS;
-
-  return ELF::SHT_PROGBITS;
-}
-
-static unsigned getELFSectionFlags(SectionKind K) {
-  unsigned Flags = 0;
-
-  if (!K.isMetadata())
-    Flags |= ELF::SHF_ALLOC;
-
-  if (K.isText())
-    Flags |= ELF::SHF_EXECINSTR;
-
-  if (K.isExecuteOnly())
-    Flags |= ELF::SHF_ARM_PURECODE;
-
-  if (K.isWriteable())
-    Flags |= ELF::SHF_WRITE;
-
-  if (K.isThreadLocal())
-    Flags |= ELF::SHF_TLS;
-
-  if (K.isMergeableCString() || K.isMergeableConst())
-    Flags |= ELF::SHF_MERGE;
-
-  if (K.isMergeableCString())
-    Flags |= ELF::SHF_STRINGS;
-
-  return Flags;
-}
-
-static const Comdat *getELFComdat(const GlobalValue *GV) {
-  const Comdat *C = GV->getComdat();
-  if (!C)
-    return nullptr;
-
-  if (C->getSelectionKind() != Comdat::Any)
-    report_fatal_error("ELF COMDATs only support SelectionKind::Any, '" +
-                       C->getName() + "' cannot be lowered.");
-
-  return C;
-}
-
-static const MCSymbolELF *getAssociatedSymbol(const GlobalObject *GO,
-                                              const TargetMachine &TM) {
-  MDNode *MD = GO->getMetadata(LLVMContext::MD_associated);
-  if (!MD)
-    return nullptr;
-
-  const MDOperand &Op = MD->getOperand(0);
-  if (!Op.get())
-    return nullptr;
-
-  auto *VM = dyn_cast<ValueAsMetadata>(Op);
-  if (!VM)
-    report_fatal_error("MD_associated operand is not ValueAsMetadata");
-
-  GlobalObject *OtherGO = dyn_cast<GlobalObject>(VM->getValue());
-  return OtherGO ? dyn_cast<MCSymbolELF>(TM.getSymbol(OtherGO)) : nullptr;
-}
-
-static unsigned getEntrySizeForKind(SectionKind Kind) {
-  if (Kind.isMergeable1ByteCString())
-    return 1;
-  else if (Kind.isMergeable2ByteCString())
-    return 2;
-  else if (Kind.isMergeable4ByteCString())
-    return 4;
-  else if (Kind.isMergeableConst4())
-    return 4;
-  else if (Kind.isMergeableConst8())
-    return 8;
-  else if (Kind.isMergeableConst16())
-    return 16;
-  else if (Kind.isMergeableConst32())
-    return 32;
-  else {
-    // We shouldn't have mergeable C strings or mergeable constants that we
-    // didn't handle above.
-    assert(!Kind.isMergeableCString() && "unknown string width");
-    assert(!Kind.isMergeableConst() && "unknown data width");
-    return 0;
-  }
-}
-
-MCSection *TargetLoweringObjectFileELF::getExplicitSectionGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  StringRef SectionName = GO->getSection();
-
-  // Check if '#pragma clang section' name is applicable.
-  // Note that pragma directive overrides -ffunction-section, -fdata-section
-  // and so section name is exactly as user specified and not uniqued.
-  const GlobalVariable *GV = dyn_cast<GlobalVariable>(GO);
-  if (GV && GV->hasImplicitSection()) {
-    auto Attrs = GV->getAttributes();
-    if (Attrs.hasAttribute("bss-section") && Kind.isBSS()) {
-      SectionName = Attrs.getAttribute("bss-section").getValueAsString();
-    } else if (Attrs.hasAttribute("rodata-section") && Kind.isReadOnly()) {
-      SectionName = Attrs.getAttribute("rodata-section").getValueAsString();
-    } else if (Attrs.hasAttribute("data-section") && Kind.isData()) {
-      SectionName = Attrs.getAttribute("data-section").getValueAsString();
-    }
-  }
-  const Function *F = dyn_cast<Function>(GO);
-  if (F && F->hasFnAttribute("implicit-section-name")) {
-    SectionName = F->getFnAttribute("implicit-section-name").getValueAsString();
-  }
-
-  // Infer section flags from the section name if we can.
-  Kind = getELFKindForNamedSection(SectionName, Kind);
-
-  StringRef Group = "";
-  unsigned Flags = getELFSectionFlags(Kind);
-  if (const Comdat *C = getELFComdat(GO)) {
-    Group = C->getName();
-    Flags |= ELF::SHF_GROUP;
-  }
-
-  // A section can have at most one associated section. Put each global with
-  // MD_associated in a unique section.
-  unsigned UniqueID = MCContext::GenericSectionID;
-  const MCSymbolELF *AssociatedSymbol = getAssociatedSymbol(GO, TM);
-  if (AssociatedSymbol) {
-    UniqueID = NextUniqueID++;
-    Flags |= ELF::SHF_LINK_ORDER;
-  }
-
-  MCSectionELF *Section = getContext().getELFSection(
-      SectionName, getELFSectionType(SectionName, Kind), Flags,
-      getEntrySizeForKind(Kind), Group, UniqueID, AssociatedSymbol);
-  // Make sure that we did not get some other section with incompatible sh_link.
-  // This should not be possible due to UniqueID code above.
-  assert(Section->getAssociatedSymbol() == AssociatedSymbol &&
-         "Associated symbol mismatch between sections");
-  return Section;
-}
-
-/// Return the section prefix name used by options FunctionsSections and
-/// DataSections.
-static StringRef getSectionPrefixForGlobal(SectionKind Kind) {
-  if (Kind.isText())
-    return ".text";
-  if (Kind.isReadOnly())
-    return ".rodata";
-  if (Kind.isBSS())
-    return ".bss";
-  if (Kind.isThreadData())
-    return ".tdata";
-  if (Kind.isThreadBSS())
-    return ".tbss";
-  if (Kind.isData())
-    return ".data";
-  assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
-  return ".data.rel.ro";
-}
-
-static MCSectionELF *selectELFSectionForGlobal(
-    MCContext &Ctx, const GlobalObject *GO, SectionKind Kind, Mangler &Mang,
-    const TargetMachine &TM, bool EmitUniqueSection, unsigned Flags,
-    unsigned *NextUniqueID, const MCSymbolELF *AssociatedSymbol) {
-
-  StringRef Group = "";
-  if (const Comdat *C = getELFComdat(GO)) {
-    Flags |= ELF::SHF_GROUP;
-    Group = C->getName();
-  }
-
-  // Get the section entry size based on the kind.
-  unsigned EntrySize = getEntrySizeForKind(Kind);
-
-  SmallString<128> Name;
-  if (Kind.isMergeableCString()) {
-    // We also need alignment here.
-    // FIXME: this is getting the alignment of the character, not the
-    // alignment of the global!
-    unsigned Align = GO->getParent()->getDataLayout().getPreferredAlignment(
-        cast<GlobalVariable>(GO));
-
-    std::string SizeSpec = ".rodata.str" + utostr(EntrySize) + ".";
-    Name = SizeSpec + utostr(Align);
-  } else if (Kind.isMergeableConst()) {
-    Name = ".rodata.cst";
-    Name += utostr(EntrySize);
-  } else {
-    Name = getSectionPrefixForGlobal(Kind);
-  }
-
-  if (const auto *F = dyn_cast<Function>(GO)) {
-    const auto &OptionalPrefix = F->getSectionPrefix();
-    if (OptionalPrefix)
-      Name += *OptionalPrefix;
-  }
-
-  unsigned UniqueID = MCContext::GenericSectionID;
-  if (EmitUniqueSection) {
-    if (TM.getUniqueSectionNames()) {
-      Name.push_back('.');
-      TM.getNameWithPrefix(Name, GO, Mang, true /*MayAlwaysUsePrivate*/);
-    } else {
-      UniqueID = *NextUniqueID;
-      (*NextUniqueID)++;
-    }
-  }
-  // Use 0 as the unique ID for execute-only text.
-  if (Kind.isExecuteOnly())
-    UniqueID = 0;
-  return Ctx.getELFSection(Name, getELFSectionType(Name, Kind), Flags,
-                           EntrySize, Group, UniqueID, AssociatedSymbol);
-}
-
-MCSection *TargetLoweringObjectFileELF::SelectSectionForGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  unsigned Flags = getELFSectionFlags(Kind);
-
-  // If we have -ffunction-section or -fdata-section then we should emit the
-  // global value to a uniqued section specifically for it.
-  bool EmitUniqueSection = false;
-  if (!(Flags & ELF::SHF_MERGE) && !Kind.isCommon()) {
-    if (Kind.isText())
-      EmitUniqueSection = TM.getFunctionSections();
-    else
-      EmitUniqueSection = TM.getDataSections();
-  }
-  EmitUniqueSection |= GO->hasComdat();
-
-  const MCSymbolELF *AssociatedSymbol = getAssociatedSymbol(GO, TM);
-  if (AssociatedSymbol) {
-    EmitUniqueSection = true;
-    Flags |= ELF::SHF_LINK_ORDER;
-  }
-
-  MCSectionELF *Section = selectELFSectionForGlobal(
-      getContext(), GO, Kind, getMangler(), TM, EmitUniqueSection, Flags,
-      &NextUniqueID, AssociatedSymbol);
-  assert(Section->getAssociatedSymbol() == AssociatedSymbol);
-  return Section;
-}
-
-MCSection *TargetLoweringObjectFileELF::getSectionForJumpTable(
-    const Function &F, const TargetMachine &TM) const {
-  // If the function can be removed, produce a unique section so that
-  // the table doesn't prevent the removal.
-  const Comdat *C = F.getComdat();
-  bool EmitUniqueSection = TM.getFunctionSections() || C;
-  if (!EmitUniqueSection)
-    return ReadOnlySection;
-
-  return selectELFSectionForGlobal(getContext(), &F, SectionKind::getReadOnly(),
-                                   getMangler(), TM, EmitUniqueSection,
-                                   ELF::SHF_ALLOC, &NextUniqueID,
-                                   /* AssociatedSymbol */ nullptr);
-}
-
-bool TargetLoweringObjectFileELF::shouldPutJumpTableInFunctionSection(
-    bool UsesLabelDifference, const Function &F) const {
-  // We can always create relative relocations, so use another section
-  // that can be marked non-executable.
-  return false;
-}
-
-/// Given a mergeable constant with the specified size and relocation
-/// information, return a section that it should be placed in.
-MCSection *TargetLoweringObjectFileELF::getSectionForConstant(
-    const DataLayout &DL, SectionKind Kind, const Constant *C,
-    unsigned &Align) const {
-  if (Kind.isMergeableConst4() && MergeableConst4Section)
-    return MergeableConst4Section;
-  if (Kind.isMergeableConst8() && MergeableConst8Section)
-    return MergeableConst8Section;
-  if (Kind.isMergeableConst16() && MergeableConst16Section)
-    return MergeableConst16Section;
-  if (Kind.isMergeableConst32() && MergeableConst32Section)
-    return MergeableConst32Section;
-  if (Kind.isReadOnly())
-    return ReadOnlySection;
-
-  assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
-  return DataRelROSection;
-}
-
-static MCSectionELF *getStaticStructorSection(MCContext &Ctx, bool UseInitArray,
-                                              bool IsCtor, unsigned Priority,
-                                              const MCSymbol *KeySym) {
-  std::string Name;
-  unsigned Type;
-  unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE;
-  StringRef COMDAT = KeySym ? KeySym->getName() : "";
-
-  if (KeySym)
-    Flags |= ELF::SHF_GROUP;
-
-  if (UseInitArray) {
-    if (IsCtor) {
-      Type = ELF::SHT_INIT_ARRAY;
-      Name = ".init_array";
-    } else {
-      Type = ELF::SHT_FINI_ARRAY;
-      Name = ".fini_array";
-    }
-    if (Priority != 65535) {
-      Name += '.';
-      Name += utostr(Priority);
-    }
-  } else {
-    // The default scheme is .ctor / .dtor, so we have to invert the priority
-    // numbering.
-    if (IsCtor)
-      Name = ".ctors";
-    else
-      Name = ".dtors";
-    if (Priority != 65535)
-      raw_string_ostream(Name) << format(".%05u", 65535 - Priority);
-    Type = ELF::SHT_PROGBITS;
-  }
-
-  return Ctx.getELFSection(Name, Type, Flags, 0, COMDAT);
-}
-
-MCSection *TargetLoweringObjectFileELF::getStaticCtorSection(
-    unsigned Priority, const MCSymbol *KeySym) const {
-  return getStaticStructorSection(getContext(), UseInitArray, true, Priority,
-                                  KeySym);
-}
-
-MCSection *TargetLoweringObjectFileELF::getStaticDtorSection(
-    unsigned Priority, const MCSymbol *KeySym) const {
-  return getStaticStructorSection(getContext(), UseInitArray, false, Priority,
-                                  KeySym);
-}
-
-const MCExpr *TargetLoweringObjectFileELF::lowerRelativeReference(
-    const GlobalValue *LHS, const GlobalValue *RHS,
-    const TargetMachine &TM) const {
-  // We may only use a PLT-relative relocation to refer to unnamed_addr
-  // functions.
-  if (!LHS->hasGlobalUnnamedAddr() || !LHS->getValueType()->isFunctionTy())
-    return nullptr;
-
-  // Basic sanity checks.
-  if (LHS->getType()->getPointerAddressSpace() != 0 ||
-      RHS->getType()->getPointerAddressSpace() != 0 || LHS->isThreadLocal() ||
-      RHS->isThreadLocal())
-    return nullptr;
-
-  return MCBinaryExpr::createSub(
-      MCSymbolRefExpr::create(TM.getSymbol(LHS), PLTRelativeVariantKind,
-                              getContext()),
-      MCSymbolRefExpr::create(TM.getSymbol(RHS), getContext()), getContext());
-}
-
-MCSection *TargetLoweringObjectFileELF::getSectionForCommandLines() const {
-  // Use ".GCC.command.line" since this feature is to support clang's
-  // -frecord-gcc-switches which in turn attempts to mimic GCC's switch of the
-  // same name.
-  return getContext().getELFSection(".GCC.command.line", ELF::SHT_PROGBITS,
-                                    ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
-}
-
-void
-TargetLoweringObjectFileELF::InitializeELF(bool UseInitArray_) {
-  UseInitArray = UseInitArray_;
-  MCContext &Ctx = getContext();
-  if (!UseInitArray) {
-    StaticCtorSection = Ctx.getELFSection(".ctors", ELF::SHT_PROGBITS,
-                                          ELF::SHF_ALLOC | ELF::SHF_WRITE);
-
-    StaticDtorSection = Ctx.getELFSection(".dtors", ELF::SHT_PROGBITS,
-                                          ELF::SHF_ALLOC | ELF::SHF_WRITE);
-    return;
-  }
-
-  StaticCtorSection = Ctx.getELFSection(".init_array", ELF::SHT_INIT_ARRAY,
-                                        ELF::SHF_WRITE | ELF::SHF_ALLOC);
-  StaticDtorSection = Ctx.getELFSection(".fini_array", ELF::SHT_FINI_ARRAY,
-                                        ELF::SHF_WRITE | ELF::SHF_ALLOC);
-}
-
-//===----------------------------------------------------------------------===//
-//                                 MachO
-//===----------------------------------------------------------------------===//
-
-TargetLoweringObjectFileMachO::TargetLoweringObjectFileMachO()
-  : TargetLoweringObjectFile() {
-  SupportIndirectSymViaGOTPCRel = true;
-}
-
-void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
-                                               const TargetMachine &TM) {
-  TargetLoweringObjectFile::Initialize(Ctx, TM);
-  if (TM.getRelocationModel() == Reloc::Static) {
-    StaticCtorSection = Ctx.getMachOSection("__TEXT", "__constructor", 0,
-                                            SectionKind::getData());
-    StaticDtorSection = Ctx.getMachOSection("__TEXT", "__destructor", 0,
-                                            SectionKind::getData());
-  } else {
-    StaticCtorSection = Ctx.getMachOSection("__DATA", "__mod_init_func",
-                                            MachO::S_MOD_INIT_FUNC_POINTERS,
-                                            SectionKind::getData());
-    StaticDtorSection = Ctx.getMachOSection("__DATA", "__mod_term_func",
-                                            MachO::S_MOD_TERM_FUNC_POINTERS,
-                                            SectionKind::getData());
-  }
-
-  PersonalityEncoding =
-      dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-  LSDAEncoding = dwarf::DW_EH_PE_pcrel;
-  TTypeEncoding =
-      dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
-}
-
-void TargetLoweringObjectFileMachO::emitModuleMetadata(MCStreamer &Streamer,
-                                                       Module &M) const {
-  // Emit the linker options if present.
-  if (auto *LinkerOptions = M.getNamedMetadata("llvm.linker.options")) {
-    for (const auto &Option : LinkerOptions->operands()) {
-      SmallVector<std::string, 4> StrOptions;
-      for (const auto &Piece : cast<MDNode>(Option)->operands())
-        StrOptions.push_back(cast<MDString>(Piece)->getString());
-      Streamer.EmitLinkerOptions(StrOptions);
-    }
-  }
-
-  unsigned VersionVal = 0;
-  unsigned ImageInfoFlags = 0;
-  StringRef SectionVal;
-
-  GetObjCImageInfo(M, VersionVal, ImageInfoFlags, SectionVal);
-
-  // The section is mandatory. If we don't have it, then we don't have GC info.
-  if (SectionVal.empty())
-    return;
-
-  StringRef Segment, Section;
-  unsigned TAA = 0, StubSize = 0;
-  bool TAAParsed;
-  std::string ErrorCode =
-    MCSectionMachO::ParseSectionSpecifier(SectionVal, Segment, Section,
-                                          TAA, TAAParsed, StubSize);
-  if (!ErrorCode.empty())
-    // If invalid, report the error with report_fatal_error.
-    report_fatal_error("Invalid section specifier '" + Section + "': " +
-                       ErrorCode + ".");
-
-  // Get the section.
-  MCSectionMachO *S = getContext().getMachOSection(
-      Segment, Section, TAA, StubSize, SectionKind::getData());
-  Streamer.SwitchSection(S);
-  Streamer.EmitLabel(getContext().
-                     getOrCreateSymbol(StringRef("L_OBJC_IMAGE_INFO")));
-  Streamer.EmitIntValue(VersionVal, 4);
-  Streamer.EmitIntValue(ImageInfoFlags, 4);
-  Streamer.AddBlankLine();
-}
-
-static void checkMachOComdat(const GlobalValue *GV) {
-  const Comdat *C = GV->getComdat();
-  if (!C)
-    return;
-
-  report_fatal_error("MachO doesn't support COMDATs, '" + C->getName() +
-                     "' cannot be lowered.");
-}
-
-MCSection *TargetLoweringObjectFileMachO::getExplicitSectionGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  // Parse the section specifier and create it if valid.
-  StringRef Segment, Section;
-  unsigned TAA = 0, StubSize = 0;
-  bool TAAParsed;
-
-  checkMachOComdat(GO);
-
-  std::string ErrorCode =
-    MCSectionMachO::ParseSectionSpecifier(GO->getSection(), Segment, Section,
-                                          TAA, TAAParsed, StubSize);
-  if (!ErrorCode.empty()) {
-    // If invalid, report the error with report_fatal_error.
-    report_fatal_error("Global variable '" + GO->getName() +
-                       "' has an invalid section specifier '" +
-                       GO->getSection() + "': " + ErrorCode + ".");
-  }
-
-  // Get the section.
-  MCSectionMachO *S =
-      getContext().getMachOSection(Segment, Section, TAA, StubSize, Kind);
-
-  // If TAA wasn't set by ParseSectionSpecifier() above,
-  // use the value returned by getMachOSection() as a default.
-  if (!TAAParsed)
-    TAA = S->getTypeAndAttributes();
-
-  // Okay, now that we got the section, verify that the TAA & StubSize agree.
-  // If the user declared multiple globals with different section flags, we need
-  // to reject it here.
-  if (S->getTypeAndAttributes() != TAA || S->getStubSize() != StubSize) {
-    // If invalid, report the error with report_fatal_error.
-    report_fatal_error("Global variable '" + GO->getName() +
-                       "' section type or attributes does not match previous"
-                       " section specifier");
-  }
-
-  return S;
-}
-
-MCSection *TargetLoweringObjectFileMachO::SelectSectionForGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  checkMachOComdat(GO);
-
-  // Handle thread local data.
-  if (Kind.isThreadBSS()) return TLSBSSSection;
-  if (Kind.isThreadData()) return TLSDataSection;
-
-  if (Kind.isText())
-    return GO->isWeakForLinker() ? TextCoalSection : TextSection;
-
-  // If this is weak/linkonce, put this in a coalescable section, either in text
-  // or data depending on if it is writable.
-  if (GO->isWeakForLinker()) {
-    if (Kind.isReadOnly())
-      return ConstTextCoalSection;
-    if (Kind.isReadOnlyWithRel())
-      return ConstDataCoalSection;
-    return DataCoalSection;
-  }
-
-  // FIXME: Alignment check should be handled by section classifier.
-  if (Kind.isMergeable1ByteCString() &&
-      GO->getParent()->getDataLayout().getPreferredAlignment(
-          cast<GlobalVariable>(GO)) < 32)
-    return CStringSection;
-
-  // Do not put 16-bit arrays in the UString section if they have an
-  // externally visible label, this runs into issues with certain linker
-  // versions.
-  if (Kind.isMergeable2ByteCString() && !GO->hasExternalLinkage() &&
-      GO->getParent()->getDataLayout().getPreferredAlignment(
-          cast<GlobalVariable>(GO)) < 32)
-    return UStringSection;
-
-  // With MachO only variables whose corresponding symbol starts with 'l' or
-  // 'L' can be merged, so we only try merging GVs with private linkage.
-  if (GO->hasPrivateLinkage() && Kind.isMergeableConst()) {
-    if (Kind.isMergeableConst4())
-      return FourByteConstantSection;
-    if (Kind.isMergeableConst8())
-      return EightByteConstantSection;
-    if (Kind.isMergeableConst16())
-      return SixteenByteConstantSection;
-  }
-
-  // Otherwise, if it is readonly, but not something we can specially optimize,
-  // just drop it in .const.
-  if (Kind.isReadOnly())
-    return ReadOnlySection;
-
-  // If this is marked const, put it into a const section.  But if the dynamic
-  // linker needs to write to it, put it in the data segment.
-  if (Kind.isReadOnlyWithRel())
-    return ConstDataSection;
-
-  // Put zero initialized globals with strong external linkage in the
-  // DATA, __common section with the .zerofill directive.
-  if (Kind.isBSSExtern())
-    return DataCommonSection;
-
-  // Put zero initialized globals with local linkage in __DATA,__bss directive
-  // with the .zerofill directive (aka .lcomm).
-  if (Kind.isBSSLocal())
-    return DataBSSSection;
-
-  // Otherwise, just drop the variable in the normal data section.
-  return DataSection;
-}
-
-MCSection *TargetLoweringObjectFileMachO::getSectionForConstant(
-    const DataLayout &DL, SectionKind Kind, const Constant *C,
-    unsigned &Align) const {
-  // If this constant requires a relocation, we have to put it in the data
-  // segment, not in the text segment.
-  if (Kind.isData() || Kind.isReadOnlyWithRel())
-    return ConstDataSection;
-
-  if (Kind.isMergeableConst4())
-    return FourByteConstantSection;
-  if (Kind.isMergeableConst8())
-    return EightByteConstantSection;
-  if (Kind.isMergeableConst16())
-    return SixteenByteConstantSection;
-  return ReadOnlySection;  // .const
-}
-
-const MCExpr *TargetLoweringObjectFileMachO::getTTypeGlobalReference(
-    const GlobalValue *GV, unsigned Encoding, const TargetMachine &TM,
-    MachineModuleInfo *MMI, MCStreamer &Streamer) const {
-  // The mach-o version of this method defaults to returning a stub reference.
-
-  if (Encoding & DW_EH_PE_indirect) {
-    MachineModuleInfoMachO &MachOMMI =
-      MMI->getObjFileInfo<MachineModuleInfoMachO>();
-
-    MCSymbol *SSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr", TM);
-
-    // Add information about the stub reference to MachOMMI so that the stub
-    // gets emitted by the asmprinter.
-    MachineModuleInfoImpl::StubValueTy &StubSym = MachOMMI.getGVStubEntry(SSym);
-    if (!StubSym.getPointer()) {
-      MCSymbol *Sym = TM.getSymbol(GV);
-      StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
-    }
-
-    return TargetLoweringObjectFile::
-      getTTypeReference(MCSymbolRefExpr::create(SSym, getContext()),
-                        Encoding & ~DW_EH_PE_indirect, Streamer);
-  }
-
-  return TargetLoweringObjectFile::getTTypeGlobalReference(GV, Encoding, TM,
-                                                           MMI, Streamer);
-}
-
-MCSymbol *TargetLoweringObjectFileMachO::getCFIPersonalitySymbol(
-    const GlobalValue *GV, const TargetMachine &TM,
-    MachineModuleInfo *MMI) const {
-  // The mach-o version of this method defaults to returning a stub reference.
-  MachineModuleInfoMachO &MachOMMI =
-    MMI->getObjFileInfo<MachineModuleInfoMachO>();
-
-  MCSymbol *SSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr", TM);
-
-  // Add information about the stub reference to MachOMMI so that the stub
-  // gets emitted by the asmprinter.
-  MachineModuleInfoImpl::StubValueTy &StubSym = MachOMMI.getGVStubEntry(SSym);
-  if (!StubSym.getPointer()) {
-    MCSymbol *Sym = TM.getSymbol(GV);
-    StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
-  }
-
-  return SSym;
-}
-
-const MCExpr *TargetLoweringObjectFileMachO::getIndirectSymViaGOTPCRel(
-    const MCSymbol *Sym, const MCValue &MV, int64_t Offset,
-    MachineModuleInfo *MMI, MCStreamer &Streamer) const {
-  // Although MachO 32-bit targets do not explicitly have a GOTPCREL relocation
-  // as 64-bit do, we replace the GOT equivalent by accessing the final symbol
-  // through a non_lazy_ptr stub instead. One advantage is that it allows the
-  // computation of deltas to final external symbols. Example:
-  //
-  //    _extgotequiv:
-  //       .long   _extfoo
-  //
-  //    _delta:
-  //       .long   _extgotequiv-_delta
-  //
-  // is transformed to:
-  //
-  //    _delta:
-  //       .long   L_extfoo$non_lazy_ptr-(_delta+0)
-  //
-  //       .section        __IMPORT,__pointers,non_lazy_symbol_pointers
-  //    L_extfoo$non_lazy_ptr:
-  //       .indirect_symbol        _extfoo
-  //       .long   0
-  //
-  // The indirect symbol table (and sections of non_lazy_symbol_pointers type)
-  // may point to both local (same translation unit) and global (other
-  // translation units) symbols. Example:
-  //
-  // .section __DATA,__pointers,non_lazy_symbol_pointers
-  // L1:
-  //    .indirect_symbol _myGlobal
-  //    .long 0
-  // L2:
-  //    .indirect_symbol _myLocal
-  //    .long _myLocal
-  //
-  // If the symbol is local, instead of the symbol's index, the assembler
-  // places the constant INDIRECT_SYMBOL_LOCAL into the indirect symbol table.
-  // Then the linker will notice the constant in the table and will look at the
-  // content of the symbol.
-  MachineModuleInfoMachO &MachOMMI =
-    MMI->getObjFileInfo<MachineModuleInfoMachO>();
-  MCContext &Ctx = getContext();
-
-  // The offset must consider the original displacement from the base symbol
-  // since 32-bit targets don't have a GOTPCREL to fold the PC displacement.
-  Offset = -MV.getConstant();
-  const MCSymbol *BaseSym = &MV.getSymB()->getSymbol();
-
-  // Access the final symbol via sym$non_lazy_ptr and generate the appropriated
-  // non_lazy_ptr stubs.
-  SmallString<128> Name;
-  StringRef Suffix = "$non_lazy_ptr";
-  Name += MMI->getModule()->getDataLayout().getPrivateGlobalPrefix();
-  Name += Sym->getName();
-  Name += Suffix;
-  MCSymbol *Stub = Ctx.getOrCreateSymbol(Name);
-
-  MachineModuleInfoImpl::StubValueTy &StubSym = MachOMMI.getGVStubEntry(Stub);
-  if (!StubSym.getPointer()) {
-    bool IsIndirectLocal = Sym->isDefined() && !Sym->isExternal();
-    // With the assumption that IsIndirectLocal == GV->hasLocalLinkage().
-    StubSym = MachineModuleInfoImpl::StubValueTy(const_cast<MCSymbol *>(Sym),
-                                                 !IsIndirectLocal);
-  }
-
-  const MCExpr *BSymExpr =
-    MCSymbolRefExpr::create(BaseSym, MCSymbolRefExpr::VK_None, Ctx);
-  const MCExpr *LHS =
-    MCSymbolRefExpr::create(Stub, MCSymbolRefExpr::VK_None, Ctx);
-
-  if (!Offset)
-    return MCBinaryExpr::createSub(LHS, BSymExpr, Ctx);
-
-  const MCExpr *RHS =
-    MCBinaryExpr::createAdd(BSymExpr, MCConstantExpr::create(Offset, Ctx), Ctx);
-  return MCBinaryExpr::createSub(LHS, RHS, Ctx);
-}
-
-static bool canUsePrivateLabel(const MCAsmInfo &AsmInfo,
-                               const MCSection &Section) {
-  if (!AsmInfo.isSectionAtomizableBySymbols(Section))
-    return true;
-
-  // If it is not dead stripped, it is safe to use private labels.
-  const MCSectionMachO &SMO = cast<MCSectionMachO>(Section);
-  if (SMO.hasAttribute(MachO::S_ATTR_NO_DEAD_STRIP))
-    return true;
-
-  return false;
-}
-
-void TargetLoweringObjectFileMachO::getNameWithPrefix(
-    SmallVectorImpl<char> &OutName, const GlobalValue *GV,
-    const TargetMachine &TM) const {
-  bool CannotUsePrivateLabel = true;
-  if (auto *GO = GV->getBaseObject()) {
-    SectionKind GOKind = TargetLoweringObjectFile::getKindForGlobal(GO, TM);
-    const MCSection *TheSection = SectionForGlobal(GO, GOKind, TM);
-    CannotUsePrivateLabel =
-        !canUsePrivateLabel(*TM.getMCAsmInfo(), *TheSection);
-  }
-  getMangler().getNameWithPrefix(OutName, GV, CannotUsePrivateLabel);
-}
-
-//===----------------------------------------------------------------------===//
-//                                  COFF
-//===----------------------------------------------------------------------===//
-
-static unsigned
-getCOFFSectionFlags(SectionKind K, const TargetMachine &TM) {
-  unsigned Flags = 0;
-  bool isThumb = TM.getTargetTriple().getArch() == Triple::thumb;
-
-  if (K.isMetadata())
-    Flags |=
-      COFF::IMAGE_SCN_MEM_DISCARDABLE;
-  else if (K.isText())
-    Flags |=
-      COFF::IMAGE_SCN_MEM_EXECUTE |
-      COFF::IMAGE_SCN_MEM_READ |
-      COFF::IMAGE_SCN_CNT_CODE |
-      (isThumb ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0);
-  else if (K.isBSS())
-    Flags |=
-      COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
-      COFF::IMAGE_SCN_MEM_READ |
-      COFF::IMAGE_SCN_MEM_WRITE;
-  else if (K.isThreadLocal())
-    Flags |=
-      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-      COFF::IMAGE_SCN_MEM_READ |
-      COFF::IMAGE_SCN_MEM_WRITE;
-  else if (K.isReadOnly() || K.isReadOnlyWithRel())
-    Flags |=
-      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-      COFF::IMAGE_SCN_MEM_READ;
-  else if (K.isWriteable())
-    Flags |=
-      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-      COFF::IMAGE_SCN_MEM_READ |
-      COFF::IMAGE_SCN_MEM_WRITE;
-
-  return Flags;
-}
-
-static const GlobalValue *getComdatGVForCOFF(const GlobalValue *GV) {
-  const Comdat *C = GV->getComdat();
-  assert(C && "expected GV to have a Comdat!");
-
-  StringRef ComdatGVName = C->getName();
-  const GlobalValue *ComdatGV = GV->getParent()->getNamedValue(ComdatGVName);
-  if (!ComdatGV)
-    report_fatal_error("Associative COMDAT symbol '" + ComdatGVName +
-                       "' does not exist.");
-
-  if (ComdatGV->getComdat() != C)
-    report_fatal_error("Associative COMDAT symbol '" + ComdatGVName +
-                       "' is not a key for its COMDAT.");
-
-  return ComdatGV;
-}
-
-static int getSelectionForCOFF(const GlobalValue *GV) {
-  if (const Comdat *C = GV->getComdat()) {
-    const GlobalValue *ComdatKey = getComdatGVForCOFF(GV);
-    if (const auto *GA = dyn_cast<GlobalAlias>(ComdatKey))
-      ComdatKey = GA->getBaseObject();
-    if (ComdatKey == GV) {
-      switch (C->getSelectionKind()) {
-      case Comdat::Any:
-        return COFF::IMAGE_COMDAT_SELECT_ANY;
-      case Comdat::ExactMatch:
-        return COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH;
-      case Comdat::Largest:
-        return COFF::IMAGE_COMDAT_SELECT_LARGEST;
-      case Comdat::NoDuplicates:
-        return COFF::IMAGE_COMDAT_SELECT_NODUPLICATES;
-      case Comdat::SameSize:
-        return COFF::IMAGE_COMDAT_SELECT_SAME_SIZE;
-      }
-    } else {
-      return COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE;
-    }
-  }
-  return 0;
-}
-
-MCSection *TargetLoweringObjectFileCOFF::getExplicitSectionGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  int Selection = 0;
-  unsigned Characteristics = getCOFFSectionFlags(Kind, TM);
-  StringRef Name = GO->getSection();
-  StringRef COMDATSymName = "";
-  if (GO->hasComdat()) {
-    Selection = getSelectionForCOFF(GO);
-    const GlobalValue *ComdatGV;
-    if (Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE)
-      ComdatGV = getComdatGVForCOFF(GO);
-    else
-      ComdatGV = GO;
-
-    if (!ComdatGV->hasPrivateLinkage()) {
-      MCSymbol *Sym = TM.getSymbol(ComdatGV);
-      COMDATSymName = Sym->getName();
-      Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
-    } else {
-      Selection = 0;
-    }
-  }
-
-  return getContext().getCOFFSection(Name, Characteristics, Kind, COMDATSymName,
-                                     Selection);
-}
-
-static StringRef getCOFFSectionNameForUniqueGlobal(SectionKind Kind) {
-  if (Kind.isText())
-    return ".text";
-  if (Kind.isBSS())
-    return ".bss";
-  if (Kind.isThreadLocal())
-    return ".tls$";
-  if (Kind.isReadOnly() || Kind.isReadOnlyWithRel())
-    return ".rdata";
-  return ".data";
-}
-
-MCSection *TargetLoweringObjectFileCOFF::SelectSectionForGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  // If we have -ffunction-sections then we should emit the global value to a
-  // uniqued section specifically for it.
-  bool EmitUniquedSection;
-  if (Kind.isText())
-    EmitUniquedSection = TM.getFunctionSections();
-  else
-    EmitUniquedSection = TM.getDataSections();
-
-  if ((EmitUniquedSection && !Kind.isCommon()) || GO->hasComdat()) {
-    SmallString<256> Name = getCOFFSectionNameForUniqueGlobal(Kind);
-
-    unsigned Characteristics = getCOFFSectionFlags(Kind, TM);
-
-    Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
-    int Selection = getSelectionForCOFF(GO);
-    if (!Selection)
-      Selection = COFF::IMAGE_COMDAT_SELECT_NODUPLICATES;
-    const GlobalValue *ComdatGV;
-    if (GO->hasComdat())
-      ComdatGV = getComdatGVForCOFF(GO);
-    else
-      ComdatGV = GO;
-
-    unsigned UniqueID = MCContext::GenericSectionID;
-    if (EmitUniquedSection)
-      UniqueID = NextUniqueID++;
-
-    if (!ComdatGV->hasPrivateLinkage()) {
-      MCSymbol *Sym = TM.getSymbol(ComdatGV);
-      StringRef COMDATSymName = Sym->getName();
-
-      // Append "$symbol" to the section name *before* IR-level mangling is
-      // applied when targetting mingw. This is what GCC does, and the ld.bfd
-      // COFF linker will not properly handle comdats otherwise.
-      if (getTargetTriple().isWindowsGNUEnvironment())
-        raw_svector_ostream(Name) << '$' << ComdatGV->getName();
-
-      return getContext().getCOFFSection(Name, Characteristics, Kind,
-                                         COMDATSymName, Selection, UniqueID);
-    } else {
-      SmallString<256> TmpData;
-      getMangler().getNameWithPrefix(TmpData, GO, /*CannotUsePrivateLabel=*/true);
-      return getContext().getCOFFSection(Name, Characteristics, Kind, TmpData,
-                                         Selection, UniqueID);
-    }
-  }
-
-  if (Kind.isText())
-    return TextSection;
-
-  if (Kind.isThreadLocal())
-    return TLSDataSection;
-
-  if (Kind.isReadOnly() || Kind.isReadOnlyWithRel())
-    return ReadOnlySection;
-
-  // Note: we claim that common symbols are put in BSSSection, but they are
-  // really emitted with the magic .comm directive, which creates a symbol table
-  // entry but not a section.
-  if (Kind.isBSS() || Kind.isCommon())
-    return BSSSection;
-
-  return DataSection;
-}
-
-void TargetLoweringObjectFileCOFF::getNameWithPrefix(
-    SmallVectorImpl<char> &OutName, const GlobalValue *GV,
-    const TargetMachine &TM) const {
-  bool CannotUsePrivateLabel = false;
-  if (GV->hasPrivateLinkage() &&
-      ((isa<Function>(GV) && TM.getFunctionSections()) ||
-       (isa<GlobalVariable>(GV) && TM.getDataSections())))
-    CannotUsePrivateLabel = true;
-
-  getMangler().getNameWithPrefix(OutName, GV, CannotUsePrivateLabel);
-}
-
-MCSection *TargetLoweringObjectFileCOFF::getSectionForJumpTable(
-    const Function &F, const TargetMachine &TM) const {
-  // If the function can be removed, produce a unique section so that
-  // the table doesn't prevent the removal.
-  const Comdat *C = F.getComdat();
-  bool EmitUniqueSection = TM.getFunctionSections() || C;
-  if (!EmitUniqueSection)
-    return ReadOnlySection;
-
-  // FIXME: we should produce a symbol for F instead.
-  if (F.hasPrivateLinkage())
-    return ReadOnlySection;
-
-  MCSymbol *Sym = TM.getSymbol(&F);
-  StringRef COMDATSymName = Sym->getName();
-
-  SectionKind Kind = SectionKind::getReadOnly();
-  StringRef SecName = getCOFFSectionNameForUniqueGlobal(Kind);
-  unsigned Characteristics = getCOFFSectionFlags(Kind, TM);
-  Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
-  unsigned UniqueID = NextUniqueID++;
-
-  return getContext().getCOFFSection(
-      SecName, Characteristics, Kind, COMDATSymName,
-      COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE, UniqueID);
-}
-
-void TargetLoweringObjectFileCOFF::emitModuleMetadata(MCStreamer &Streamer,
-                                                      Module &M) const {
-  if (NamedMDNode *LinkerOptions = M.getNamedMetadata("llvm.linker.options")) {
-    // Emit the linker options to the linker .drectve section.  According to the
-    // spec, this section is a space-separated string containing flags for
-    // linker.
-    MCSection *Sec = getDrectveSection();
-    Streamer.SwitchSection(Sec);
-    for (const auto &Option : LinkerOptions->operands()) {
-      for (const auto &Piece : cast<MDNode>(Option)->operands()) {
-        // Lead with a space for consistency with our dllexport implementation.
-        std::string Directive(" ");
-        Directive.append(cast<MDString>(Piece)->getString());
-        Streamer.EmitBytes(Directive);
-      }
-    }
-  }
-
-  unsigned Version = 0;
-  unsigned Flags = 0;
-  StringRef Section;
-
-  GetObjCImageInfo(M, Version, Flags, Section);
-  if (Section.empty())
-    return;
-
-  auto &C = getContext();
-  auto *S = C.getCOFFSection(
-      Section, COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
-      SectionKind::getReadOnly());
-  Streamer.SwitchSection(S);
-  Streamer.EmitLabel(C.getOrCreateSymbol(StringRef("OBJC_IMAGE_INFO")));
-  Streamer.EmitIntValue(Version, 4);
-  Streamer.EmitIntValue(Flags, 4);
-  Streamer.AddBlankLine();
-}
-
-void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
-                                              const TargetMachine &TM) {
-  TargetLoweringObjectFile::Initialize(Ctx, TM);
-  const Triple &T = TM.getTargetTriple();
-  if (T.isWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
-    StaticCtorSection =
-        Ctx.getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                           COFF::IMAGE_SCN_MEM_READ,
-                           SectionKind::getReadOnly());
-    StaticDtorSection =
-        Ctx.getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                           COFF::IMAGE_SCN_MEM_READ,
-                           SectionKind::getReadOnly());
-  } else {
-    StaticCtorSection = Ctx.getCOFFSection(
-        ".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                      COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
-        SectionKind::getData());
-    StaticDtorSection = Ctx.getCOFFSection(
-        ".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                      COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
-        SectionKind::getData());
-  }
-}
-
-static MCSectionCOFF *getCOFFStaticStructorSection(MCContext &Ctx,
-                                                   const Triple &T, bool IsCtor,
-                                                   unsigned Priority,
-                                                   const MCSymbol *KeySym,
-                                                   MCSectionCOFF *Default) {
-  if (T.isWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
-    // If the priority is the default, use .CRT$XCU, possibly associative.
-    if (Priority == 65535)
-      return Ctx.getAssociativeCOFFSection(Default, KeySym, 0);
-
-    // Otherwise, we need to compute a new section name. Low priorities should
-    // run earlier. The linker will sort sections ASCII-betically, and we need a
-    // string that sorts between .CRT$XCA and .CRT$XCU. In the general case, we
-    // make a name like ".CRT$XCT12345", since that runs before .CRT$XCU. Really
-    // low priorities need to sort before 'L', since the CRT uses that
-    // internally, so we use ".CRT$XCA00001" for them.
-    SmallString<24> Name;
-    raw_svector_ostream OS(Name);
-    OS << ".CRT$XC" << (Priority < 200 ? 'A' : 'T') << format("%05u", Priority);
-    MCSectionCOFF *Sec = Ctx.getCOFFSection(
-        Name, COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
-        SectionKind::getReadOnly());
-    return Ctx.getAssociativeCOFFSection(Sec, KeySym, 0);
-  }
-
-  std::string Name = IsCtor ? ".ctors" : ".dtors";
-  if (Priority != 65535)
-    raw_string_ostream(Name) << format(".%05u", 65535 - Priority);
-
-  return Ctx.getAssociativeCOFFSection(
-      Ctx.getCOFFSection(Name, COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                   COFF::IMAGE_SCN_MEM_READ |
-                                   COFF::IMAGE_SCN_MEM_WRITE,
-                         SectionKind::getData()),
-      KeySym, 0);
-}
-
-MCSection *TargetLoweringObjectFileCOFF::getStaticCtorSection(
-    unsigned Priority, const MCSymbol *KeySym) const {
-  return getCOFFStaticStructorSection(getContext(), getTargetTriple(), true,
-                                      Priority, KeySym,
-                                      cast<MCSectionCOFF>(StaticCtorSection));
-}
-
-MCSection *TargetLoweringObjectFileCOFF::getStaticDtorSection(
-    unsigned Priority, const MCSymbol *KeySym) const {
-  return getCOFFStaticStructorSection(getContext(), getTargetTriple(), false,
-                                      Priority, KeySym,
-                                      cast<MCSectionCOFF>(StaticDtorSection));
-}
-
-void TargetLoweringObjectFileCOFF::emitLinkerFlagsForGlobal(
-    raw_ostream &OS, const GlobalValue *GV) const {
-  emitLinkerFlagsForGlobalCOFF(OS, GV, getTargetTriple(), getMangler());
-}
-
-void TargetLoweringObjectFileCOFF::emitLinkerFlagsForUsed(
-    raw_ostream &OS, const GlobalValue *GV) const {
-  emitLinkerFlagsForUsedCOFF(OS, GV, getTargetTriple(), getMangler());
-}
-
-const MCExpr *TargetLoweringObjectFileCOFF::lowerRelativeReference(
-    const GlobalValue *LHS, const GlobalValue *RHS,
-    const TargetMachine &TM) const {
-  const Triple &T = TM.getTargetTriple();
-  if (T.isOSCygMing())
-    return nullptr;
-
-  // Our symbols should exist in address space zero, cowardly no-op if
-  // otherwise.
-  if (LHS->getType()->getPointerAddressSpace() != 0 ||
-      RHS->getType()->getPointerAddressSpace() != 0)
-    return nullptr;
-
-  // Both ptrtoint instructions must wrap global objects:
-  // - Only global variables are eligible for image relative relocations.
-  // - The subtrahend refers to the special symbol __ImageBase, a GlobalVariable.
-  // We expect __ImageBase to be a global variable without a section, externally
-  // defined.
-  //
-  // It should look something like this: @__ImageBase = external constant i8
-  if (!isa<GlobalObject>(LHS) || !isa<GlobalVariable>(RHS) ||
-      LHS->isThreadLocal() || RHS->isThreadLocal() ||
-      RHS->getName() != "__ImageBase" || !RHS->hasExternalLinkage() ||
-      cast<GlobalVariable>(RHS)->hasInitializer() || RHS->hasSection())
-    return nullptr;
-
-  return MCSymbolRefExpr::create(TM.getSymbol(LHS),
-                                 MCSymbolRefExpr::VK_COFF_IMGREL32,
-                                 getContext());
-}
-
-static std::string APIntToHexString(const APInt &AI) {
-  unsigned Width = (AI.getBitWidth() / 8) * 2;
-  std::string HexString = utohexstr(AI.getLimitedValue(), /*LowerCase=*/true);
-  unsigned Size = HexString.size();
-  assert(Width >= Size && "hex string is too large!");
-  HexString.insert(HexString.begin(), Width - Size, '0');
-
-  return HexString;
-}
-
-static std::string scalarConstantToHexString(const Constant *C) {
-  Type *Ty = C->getType();
-  if (isa<UndefValue>(C)) {
-    return APIntToHexString(APInt::getNullValue(Ty->getPrimitiveSizeInBits()));
-  } else if (const auto *CFP = dyn_cast<ConstantFP>(C)) {
-    return APIntToHexString(CFP->getValueAPF().bitcastToAPInt());
-  } else if (const auto *CI = dyn_cast<ConstantInt>(C)) {
-    return APIntToHexString(CI->getValue());
-  } else {
-    unsigned NumElements;
-    if (isa<VectorType>(Ty))
-      NumElements = Ty->getVectorNumElements();
-    else
-      NumElements = Ty->getArrayNumElements();
-    std::string HexString;
-    for (int I = NumElements - 1, E = -1; I != E; --I)
-      HexString += scalarConstantToHexString(C->getAggregateElement(I));
-    return HexString;
-  }
-}
-
-MCSection *TargetLoweringObjectFileCOFF::getSectionForConstant(
-    const DataLayout &DL, SectionKind Kind, const Constant *C,
-    unsigned &Align) const {
-  if (Kind.isMergeableConst() && C &&
-      getContext().getAsmInfo()->hasCOFFComdatConstants()) {
-    // This creates comdat sections with the given symbol name, but unless
-    // AsmPrinter::GetCPISymbol actually makes the symbol global, the symbol
-    // will be created with a null storage class, which makes GNU binutils
-    // error out.
-    const unsigned Characteristics = COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                     COFF::IMAGE_SCN_MEM_READ |
-                                     COFF::IMAGE_SCN_LNK_COMDAT;
-    std::string COMDATSymName;
-    if (Kind.isMergeableConst4()) {
-      if (Align <= 4) {
-        COMDATSymName = "__real@" + scalarConstantToHexString(C);
-        Align = 4;
-      }
-    } else if (Kind.isMergeableConst8()) {
-      if (Align <= 8) {
-        COMDATSymName = "__real@" + scalarConstantToHexString(C);
-        Align = 8;
-      }
-    } else if (Kind.isMergeableConst16()) {
-      // FIXME: These may not be appropriate for non-x86 architectures.
-      if (Align <= 16) {
-        COMDATSymName = "__xmm@" + scalarConstantToHexString(C);
-        Align = 16;
-      }
-    } else if (Kind.isMergeableConst32()) {
-      if (Align <= 32) {
-        COMDATSymName = "__ymm@" + scalarConstantToHexString(C);
-        Align = 32;
-      }
-    }
-
-    if (!COMDATSymName.empty())
-      return getContext().getCOFFSection(".rdata", Characteristics, Kind,
-                                         COMDATSymName,
-                                         COFF::IMAGE_COMDAT_SELECT_ANY);
-  }
-
-  return TargetLoweringObjectFile::getSectionForConstant(DL, Kind, C, Align);
-}
-
-
-//===----------------------------------------------------------------------===//
-//                                  Wasm
-//===----------------------------------------------------------------------===//
-
-static const Comdat *getWasmComdat(const GlobalValue *GV) {
-  const Comdat *C = GV->getComdat();
-  if (!C)
-    return nullptr;
-
-  if (C->getSelectionKind() != Comdat::Any)
-    report_fatal_error("WebAssembly COMDATs only support "
-                       "SelectionKind::Any, '" + C->getName() + "' cannot be "
-                       "lowered.");
-
-  return C;
-}
-
-static SectionKind getWasmKindForNamedSection(StringRef Name, SectionKind K) {
-  // If we're told we have function data, then use that.
-  if (K.isText())
-    return SectionKind::getText();
-
-  // Otherwise, ignore whatever section type the generic impl detected and use
-  // a plain data section.
-  return SectionKind::getData();
-}
-
-MCSection *TargetLoweringObjectFileWasm::getExplicitSectionGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-  // We don't support explict section names for functions in the wasm object
-  // format.  Each function has to be in its own unique section.
-  if (isa<Function>(GO)) {
-    return SelectSectionForGlobal(GO, Kind, TM);
-  }
-
-  StringRef Name = GO->getSection();
-
-  Kind = getWasmKindForNamedSection(Name, Kind);
-
-  StringRef Group = "";
-  if (const Comdat *C = getWasmComdat(GO)) {
-    Group = C->getName();
-  }
-
-  MCSectionWasm* Section =
-      getContext().getWasmSection(Name, Kind, Group,
-                                  MCContext::GenericSectionID);
-
-  return Section;
-}
-
-static MCSectionWasm *selectWasmSectionForGlobal(
-    MCContext &Ctx, const GlobalObject *GO, SectionKind Kind, Mangler &Mang,
-    const TargetMachine &TM, bool EmitUniqueSection, unsigned *NextUniqueID) {
-  StringRef Group = "";
-  if (const Comdat *C = getWasmComdat(GO)) {
-    Group = C->getName();
-  }
-
-  bool UniqueSectionNames = TM.getUniqueSectionNames();
-  SmallString<128> Name = getSectionPrefixForGlobal(Kind);
-
-  if (const auto *F = dyn_cast<Function>(GO)) {
-    const auto &OptionalPrefix = F->getSectionPrefix();
-    if (OptionalPrefix)
-      Name += *OptionalPrefix;
-  }
-
-  if (EmitUniqueSection && UniqueSectionNames) {
-    Name.push_back('.');
-    TM.getNameWithPrefix(Name, GO, Mang, true);
-  }
-  unsigned UniqueID = MCContext::GenericSectionID;
-  if (EmitUniqueSection && !UniqueSectionNames) {
-    UniqueID = *NextUniqueID;
-    (*NextUniqueID)++;
-  }
-
-  return Ctx.getWasmSection(Name, Kind, Group, UniqueID);
-}
-
-MCSection *TargetLoweringObjectFileWasm::SelectSectionForGlobal(
-    const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
-
-  if (Kind.isCommon())
-    report_fatal_error("mergable sections not supported yet on wasm");
-
-  // If we have -ffunction-section or -fdata-section then we should emit the
-  // global value to a uniqued section specifically for it.
-  bool EmitUniqueSection = false;
-  if (Kind.isText())
-    EmitUniqueSection = TM.getFunctionSections();
-  else
-    EmitUniqueSection = TM.getDataSections();
-  EmitUniqueSection |= GO->hasComdat();
-
-  return selectWasmSectionForGlobal(getContext(), GO, Kind, getMangler(), TM,
-                                    EmitUniqueSection, &NextUniqueID);
-}
-
-bool TargetLoweringObjectFileWasm::shouldPutJumpTableInFunctionSection(
-    bool UsesLabelDifference, const Function &F) const {
-  // We can always create relative relocations, so use another section
-  // that can be marked non-executable.
-  return false;
-}
-
-const MCExpr *TargetLoweringObjectFileWasm::lowerRelativeReference(
-    const GlobalValue *LHS, const GlobalValue *RHS,
-    const TargetMachine &TM) const {
-  // We may only use a PLT-relative relocation to refer to unnamed_addr
-  // functions.
-  if (!LHS->hasGlobalUnnamedAddr() || !LHS->getValueType()->isFunctionTy())
-    return nullptr;
-
-  // Basic sanity checks.
-  if (LHS->getType()->getPointerAddressSpace() != 0 ||
-      RHS->getType()->getPointerAddressSpace() != 0 || LHS->isThreadLocal() ||
-      RHS->isThreadLocal())
-    return nullptr;
-
-  return MCBinaryExpr::createSub(
-      MCSymbolRefExpr::create(TM.getSymbol(LHS), MCSymbolRefExpr::VK_None,
-                              getContext()),
-      MCSymbolRefExpr::create(TM.getSymbol(RHS), getContext()), getContext());
-}
-
-void TargetLoweringObjectFileWasm::InitializeWasm() {
-  StaticCtorSection =
-      getContext().getWasmSection(".init_array", SectionKind::getData());
-
-  // We don't use PersonalityEncoding and LSDAEncoding because we don't emit
-  // .cfi directives. We use TTypeEncoding to encode typeinfo global variables.
-  TTypeEncoding = dwarf::DW_EH_PE_absptr;
-}
-
-MCSection *TargetLoweringObjectFileWasm::getStaticCtorSection(
-    unsigned Priority, const MCSymbol *KeySym) const {
-  return Priority == UINT16_MAX ?
-         StaticCtorSection :
-         getContext().getWasmSection(".init_array." + utostr(Priority),
-                                     SectionKind::getData());
-}
-
-MCSection *TargetLoweringObjectFileWasm::getStaticDtorSection(
-    unsigned Priority, const MCSymbol *KeySym) const {
-  llvm_unreachable("@llvm.global_dtors should have been lowered already");
-  return nullptr;
-}