Revert "Revert D109159 "[amdgpu] Enable selection of `s_cselect_b64`.""

This reverts commit 859ebca744e634dcc89a2294ffa41574f947bd62.
The change contained many unrelated changes and e.g. restored
unit test failes for the old lld port.

1 files changed, 0 insertions, 614 deletions

diff --git a/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryReader.cpp b/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryReader.cpp
deleted file mode 100644
index 87601ca..0000000
--- a/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryReader.cpp
+++ /dev/null
@@ -1,614 +0,0 @@
-//===- lib/ReaderWriter/MachO/MachONormalizedFileBinaryReader.cpp ---------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-///
-/// \file For mach-o object files, this implementation converts from
-/// mach-o on-disk binary format to in-memory normalized mach-o.
-///
-///                 +---------------+
-///                 | binary mach-o |
-///                 +---------------+
-///                        |
-///                        |
-///                        v
-///                  +------------+
-///                  | normalized |
-///                  +------------+
-
-#include "ArchHandler.h"
-#include "MachONormalizedFile.h"
-#include "MachONormalizedFileBinaryUtils.h"
-#include "lld/Common/LLVM.h"
-#include "lld/Core/Error.h"
-#include "lld/Core/SharedLibraryFile.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/BinaryFormat/MachO.h"
-#include "llvm/BinaryFormat/Magic.h"
-#include "llvm/Object/MachO.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/Errc.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FileOutputBuffer.h"
-#include "llvm/Support/Host.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-#include <functional>
-#include <system_error>
-
-using namespace llvm::MachO;
-using llvm::object::ExportEntry;
-using llvm::file_magic;
-using llvm::object::MachOObjectFile;
-
-namespace lld {
-namespace mach_o {
-namespace normalized {
-
-// Utility to call a lambda expression on each load command.
-static llvm::Error forEachLoadCommand(
-    StringRef lcRange, unsigned lcCount, bool isBig, bool is64,
-    std::function<bool(uint32_t cmd, uint32_t size, const char *lc)> func) {
-  const char* p = lcRange.begin();
-  for (unsigned i=0; i < lcCount; ++i) {
-    const load_command *lc = reinterpret_cast<const load_command*>(p);
-    load_command lcCopy;
-    const load_command *slc = lc;
-    if (isBig != llvm::sys::IsBigEndianHost) {
-      memcpy(&lcCopy, lc, sizeof(load_command));
-      swapStruct(lcCopy);
-      slc = &lcCopy;
-    }
-    if ( (p + slc->cmdsize) > lcRange.end() )
-      return llvm::make_error<GenericError>("Load command exceeds range");
-
-    if (func(slc->cmd, slc->cmdsize, p))
-      return llvm::Error::success();
-
-    p += slc->cmdsize;
-  }
-
-  return llvm::Error::success();
-}
-
-static std::error_code appendRelocations(Relocations &relocs, StringRef buffer,
-                                         bool bigEndian,
-                                         uint32_t reloff, uint32_t nreloc) {
-  if ((reloff + nreloc*8) > buffer.size())
-    return make_error_code(llvm::errc::executable_format_error);
-  const any_relocation_info* relocsArray =
-            reinterpret_cast<const any_relocation_info*>(buffer.begin()+reloff);
-
-  for(uint32_t i=0; i < nreloc; ++i) {
-    relocs.push_back(unpackRelocation(relocsArray[i], bigEndian));
-  }
-  return std::error_code();
-}
-
-static std::error_code
-appendIndirectSymbols(IndirectSymbols &isyms, StringRef buffer, bool isBig,
-                      uint32_t istOffset, uint32_t istCount,
-                      uint32_t startIndex, uint32_t count) {
-  if ((istOffset + istCount*4) > buffer.size())
-    return make_error_code(llvm::errc::executable_format_error);
-  if (startIndex+count  > istCount)
-    return make_error_code(llvm::errc::executable_format_error);
-  const uint8_t *indirectSymbolArray = (const uint8_t *)buffer.data();
-
-  for(uint32_t i=0; i < count; ++i) {
-    isyms.push_back(read32(
-        indirectSymbolArray + (startIndex + i) * sizeof(uint32_t), isBig));
-  }
-  return std::error_code();
-}
-
-
-template <typename T> static T readBigEndian(T t) {
-  if (llvm::sys::IsLittleEndianHost)
-    llvm::sys::swapByteOrder(t);
-  return t;
-}
-
-
-static bool isMachOHeader(const mach_header *mh, bool &is64, bool &isBig) {
-  switch (read32(&mh->magic, false)) {
-  case llvm::MachO::MH_MAGIC:
-    is64 = false;
-    isBig = false;
-    return true;
-  case llvm::MachO::MH_MAGIC_64:
-    is64 = true;
-    isBig = false;
-    return true;
-  case llvm::MachO::MH_CIGAM:
-    is64 = false;
-    isBig = true;
-    return true;
-  case llvm::MachO::MH_CIGAM_64:
-    is64 = true;
-    isBig = true;
-    return true;
-  default:
-    return false;
-  }
-}
-
-
-bool isThinObjectFile(StringRef path, MachOLinkingContext::Arch &arch) {
-  // Try opening and mapping file at path.
-  ErrorOr<std::unique_ptr<MemoryBuffer>> b = MemoryBuffer::getFileOrSTDIN(path);
-  if (b.getError())
-    return false;
-
-  // If file length < 32 it is too small to be mach-o object file.
-  StringRef fileBuffer = b->get()->getBuffer();
-  if (fileBuffer.size() < 32)
-    return false;
-
-  // If file buffer does not start with MH_MAGIC (and variants), not obj file.
-  const mach_header *mh = reinterpret_cast<const mach_header *>(
-                                                            fileBuffer.begin());
-  bool is64, isBig;
-  if (!isMachOHeader(mh, is64, isBig))
-    return false;
-
-  // If not MH_OBJECT, not object file.
-  if (read32(&mh->filetype, isBig) != MH_OBJECT)
-    return false;
-
-  // Lookup up arch from cpu/subtype pair.
-  arch = MachOLinkingContext::archFromCpuType(
-      read32(&mh->cputype, isBig),
-      read32(&mh->cpusubtype, isBig));
-  return true;
-}
-
-bool sliceFromFatFile(MemoryBufferRef mb, MachOLinkingContext::Arch arch,
-                      uint32_t &offset, uint32_t &size) {
-  const char *start = mb.getBufferStart();
-  const llvm::MachO::fat_header *fh =
-      reinterpret_cast<const llvm::MachO::fat_header *>(start);
-  if (readBigEndian(fh->magic) != llvm::MachO::FAT_MAGIC)
-    return false;
-  uint32_t nfat_arch = readBigEndian(fh->nfat_arch);
-  const fat_arch *fstart =
-      reinterpret_cast<const fat_arch *>(start + sizeof(fat_header));
-  const fat_arch *fend =
-      reinterpret_cast<const fat_arch *>(start + sizeof(fat_header) +
-                                         sizeof(fat_arch) * nfat_arch);
-  const uint32_t reqCpuType = MachOLinkingContext::cpuTypeFromArch(arch);
-  const uint32_t reqCpuSubtype = MachOLinkingContext::cpuSubtypeFromArch(arch);
-  for (const fat_arch *fa = fstart; fa < fend; ++fa) {
-    if ((readBigEndian(fa->cputype) == reqCpuType) &&
-        (readBigEndian(fa->cpusubtype) == reqCpuSubtype)) {
-      offset = readBigEndian(fa->offset);
-      size = readBigEndian(fa->size);
-      if ((offset + size) > mb.getBufferSize())
-        return false;
-      return true;
-    }
-  }
-  return false;
-}
-
-/// Reads a mach-o file and produces an in-memory normalized view.
-llvm::Expected<std::unique_ptr<NormalizedFile>>
-readBinary(std::unique_ptr<MemoryBuffer> &mb,
-           const MachOLinkingContext::Arch arch) {
-  // Make empty NormalizedFile.
-  std::unique_ptr<NormalizedFile> f(new NormalizedFile());
-
-  const char *start = mb->getBufferStart();
-  size_t objSize = mb->getBufferSize();
-  const mach_header *mh = reinterpret_cast<const mach_header *>(start);
-
-  uint32_t sliceOffset;
-  uint32_t sliceSize;
-  if (sliceFromFatFile(mb->getMemBufferRef(), arch, sliceOffset, sliceSize)) {
-    start = &start[sliceOffset];
-    objSize = sliceSize;
-    mh = reinterpret_cast<const mach_header *>(start);
-  }
-
-  // Determine endianness and pointer size for mach-o file.
-  bool is64, isBig;
-  if (!isMachOHeader(mh, is64, isBig))
-    return llvm::make_error<GenericError>("File is not a mach-o");
-
-  // Endian swap header, if needed.
-  mach_header headerCopy;
-  const mach_header *smh = mh;
-  if (isBig != llvm::sys::IsBigEndianHost) {
-    memcpy(&headerCopy, mh, sizeof(mach_header));
-    swapStruct(headerCopy);
-    smh = &headerCopy;
-  }
-
-  // Validate head and load commands fit in buffer.
-  const uint32_t lcCount = smh->ncmds;
-  const char *lcStart =
-      start + (is64 ? sizeof(mach_header_64) : sizeof(mach_header));
-  StringRef lcRange(lcStart, smh->sizeofcmds);
-  if (lcRange.end() > (start + objSize))
-    return llvm::make_error<GenericError>("Load commands exceed file size");
-
-  // Get architecture from mach_header.
-  f->arch = MachOLinkingContext::archFromCpuType(smh->cputype, smh->cpusubtype);
-  if (f->arch != arch) {
-    return llvm::make_error<GenericError>(
-                                  Twine("file is wrong architecture. Expected "
-                                  "(" + MachOLinkingContext::nameFromArch(arch)
-                                  + ") found ("
-                                  + MachOLinkingContext::nameFromArch(f->arch)
-                                  + ")" ));
-  }
-  // Copy file type and flags
-  f->fileType = HeaderFileType(smh->filetype);
-  f->flags = smh->flags;
-
-
-  // Pre-scan load commands looking for indirect symbol table.
-  uint32_t indirectSymbolTableOffset = 0;
-  uint32_t indirectSymbolTableCount = 0;
-  auto ec = forEachLoadCommand(lcRange, lcCount, isBig, is64,
-                               [&](uint32_t cmd, uint32_t size,
-                                   const char *lc) -> bool {
-    if (cmd == LC_DYSYMTAB) {
-      const dysymtab_command *d = reinterpret_cast<const dysymtab_command*>(lc);
-      indirectSymbolTableOffset = read32(&d->indirectsymoff, isBig);
-      indirectSymbolTableCount = read32(&d->nindirectsyms, isBig);
-      return true;
-    }
-    return false;
-  });
-  if (ec)
-    return std::move(ec);
-
-  // Walk load commands looking for segments/sections and the symbol table.
-  const data_in_code_entry *dataInCode = nullptr;
-  const dyld_info_command *dyldInfo = nullptr;
-  uint32_t dataInCodeSize = 0;
-  ec = forEachLoadCommand(lcRange, lcCount, isBig, is64,
-                    [&] (uint32_t cmd, uint32_t size, const char* lc) -> bool {
-    switch(cmd) {
-    case LC_SEGMENT_64:
-      if (is64) {
-        const segment_command_64 *seg =
-                              reinterpret_cast<const segment_command_64*>(lc);
-        const unsigned sectionCount = read32(&seg->nsects, isBig);
-        const section_64 *sects = reinterpret_cast<const section_64*>
-                                  (lc + sizeof(segment_command_64));
-        const unsigned lcSize = sizeof(segment_command_64)
-                                              + sectionCount*sizeof(section_64);
-        // Verify sections don't extend beyond end of segment load command.
-        if (lcSize > size)
-          return true;
-        for (unsigned i=0; i < sectionCount; ++i) {
-          const section_64 *sect = &sects[i];
-          Section section;
-          section.segmentName = getString16(sect->segname);
-          section.sectionName = getString16(sect->sectname);
-          section.type = (SectionType)(read32(&sect->flags, isBig) &
-                                       SECTION_TYPE);
-          section.attributes  = read32(&sect->flags, isBig) & SECTION_ATTRIBUTES;
-          section.alignment   = 1 << read32(&sect->align, isBig);
-          section.address     = read64(&sect->addr, isBig);
-          const uint8_t *content =
-            (const uint8_t *)start + read32(&sect->offset, isBig);
-          size_t contentSize = read64(&sect->size, isBig);
-          // Note: this assign() is copying the content bytes.  Ideally,
-          // we can use a custom allocator for vector to avoid the copy.
-          section.content = llvm::makeArrayRef(content, contentSize);
-          appendRelocations(section.relocations, mb->getBuffer(), isBig,
-                            read32(&sect->reloff, isBig),
-                            read32(&sect->nreloc, isBig));
-          if (section.type == S_NON_LAZY_SYMBOL_POINTERS) {
-            appendIndirectSymbols(section.indirectSymbols, mb->getBuffer(),
-                                  isBig,
-                                  indirectSymbolTableOffset,
-                                  indirectSymbolTableCount,
-                                  read32(&sect->reserved1, isBig),
-                                  contentSize/4);
-          }
-          f->sections.push_back(section);
-        }
-      }
-      break;
-    case LC_SEGMENT:
-      if (!is64) {
-        const segment_command *seg =
-                              reinterpret_cast<const segment_command*>(lc);
-        const unsigned sectionCount = read32(&seg->nsects, isBig);
-        const section *sects = reinterpret_cast<const section*>
-                                  (lc + sizeof(segment_command));
-        const unsigned lcSize = sizeof(segment_command)
-                                              + sectionCount*sizeof(section);
-        // Verify sections don't extend beyond end of segment load command.
-        if (lcSize > size)
-          return true;
-        for (unsigned i=0; i < sectionCount; ++i) {
-          const section *sect = &sects[i];
-          Section section;
-          section.segmentName = getString16(sect->segname);
-          section.sectionName = getString16(sect->sectname);
-          section.type = (SectionType)(read32(&sect->flags, isBig) &
-                                       SECTION_TYPE);
-          section.attributes =
-              read32((const uint8_t *)&sect->flags, isBig) & SECTION_ATTRIBUTES;
-          section.alignment   = 1 << read32(&sect->align, isBig);
-          section.address     = read32(&sect->addr, isBig);
-          const uint8_t *content =
-            (const uint8_t *)start + read32(&sect->offset, isBig);
-          size_t contentSize = read32(&sect->size, isBig);
-          // Note: this assign() is copying the content bytes.  Ideally,
-          // we can use a custom allocator for vector to avoid the copy.
-          section.content = llvm::makeArrayRef(content, contentSize);
-          appendRelocations(section.relocations, mb->getBuffer(), isBig,
-                            read32(&sect->reloff, isBig),
-                            read32(&sect->nreloc, isBig));
-          if (section.type == S_NON_LAZY_SYMBOL_POINTERS) {
-            appendIndirectSymbols(
-                section.indirectSymbols, mb->getBuffer(), isBig,
-                indirectSymbolTableOffset, indirectSymbolTableCount,
-                read32(&sect->reserved1, isBig), contentSize / 4);
-          }
-          f->sections.push_back(section);
-        }
-      }
-      break;
-    case LC_SYMTAB: {
-      const symtab_command *st = reinterpret_cast<const symtab_command*>(lc);
-      const char *strings = start + read32(&st->stroff, isBig);
-      const uint32_t strSize = read32(&st->strsize, isBig);
-      // Validate string pool and symbol table all in buffer.
-      if (read32((const uint8_t *)&st->stroff, isBig) +
-              read32((const uint8_t *)&st->strsize, isBig) >
-          objSize)
-        return true;
-      if (is64) {
-        const uint32_t symOffset = read32(&st->symoff, isBig);
-        const uint32_t symCount = read32(&st->nsyms, isBig);
-        if ( symOffset+(symCount*sizeof(nlist_64)) > objSize)
-          return true;
-        const nlist_64 *symbols =
-            reinterpret_cast<const nlist_64 *>(start + symOffset);
-        // Convert each nlist_64 to a lld::mach_o::normalized::Symbol.
-        for(uint32_t i=0; i < symCount; ++i) {
-          nlist_64 tempSym;
-          memcpy(&tempSym, &symbols[i], sizeof(nlist_64));
-          const nlist_64 *sin = &tempSym;
-          if (isBig != llvm::sys::IsBigEndianHost)
-            swapStruct(tempSym);
-          Symbol sout;
-          if (sin->n_strx > strSize)
-            return true;
-          sout.name  = &strings[sin->n_strx];
-          sout.type = static_cast<NListType>(sin->n_type & (N_STAB|N_TYPE));
-          sout.scope = (sin->n_type & (N_PEXT|N_EXT));
-          sout.sect  = sin->n_sect;
-          sout.desc  = sin->n_desc;
-          sout.value = sin->n_value;
-          if (sin->n_type & N_STAB)
-            f->stabsSymbols.push_back(sout);
-          else if (sout.type == N_UNDF)
-            f->undefinedSymbols.push_back(sout);
-          else if (sin->n_type & N_EXT)
-            f->globalSymbols.push_back(sout);
-          else
-            f->localSymbols.push_back(sout);
-        }
-      } else {
-        const uint32_t symOffset = read32(&st->symoff, isBig);
-        const uint32_t symCount = read32(&st->nsyms, isBig);
-        if ( symOffset+(symCount*sizeof(nlist)) > objSize)
-          return true;
-        const nlist *symbols =
-            reinterpret_cast<const nlist *>(start + symOffset);
-        // Convert each nlist to a lld::mach_o::normalized::Symbol.
-        for(uint32_t i=0; i < symCount; ++i) {
-          const nlist *sin = &symbols[i];
-          nlist tempSym;
-          if (isBig != llvm::sys::IsBigEndianHost) {
-            tempSym = *sin; swapStruct(tempSym); sin = &tempSym;
-          }
-          Symbol sout;
-          if (sin->n_strx > strSize)
-            return true;
-          sout.name  = &strings[sin->n_strx];
-          sout.type  = (NListType)(sin->n_type & N_TYPE);
-          sout.scope = (sin->n_type & (N_PEXT|N_EXT));
-          sout.sect  = sin->n_sect;
-          sout.desc  = sin->n_desc;
-          sout.value = sin->n_value;
-          if (sout.type == N_UNDF)
-            f->undefinedSymbols.push_back(sout);
-          else if (sout.scope == (SymbolScope)N_EXT)
-            f->globalSymbols.push_back(sout);
-          else if (sin->n_type & N_STAB)
-            f->stabsSymbols.push_back(sout);
-          else
-            f->localSymbols.push_back(sout);
-        }
-      }
-      }
-      break;
-    case LC_ID_DYLIB: {
-      const dylib_command *dl = reinterpret_cast<const dylib_command*>(lc);
-      f->installName = lc + read32(&dl->dylib.name, isBig);
-      f->currentVersion = read32(&dl->dylib.current_version, isBig);
-      f->compatVersion = read32(&dl->dylib.compatibility_version, isBig);
-      }
-      break;
-    case LC_DATA_IN_CODE: {
-      const linkedit_data_command *ldc =
-                            reinterpret_cast<const linkedit_data_command*>(lc);
-      dataInCode = reinterpret_cast<const data_in_code_entry *>(
-          start + read32(&ldc->dataoff, isBig));
-      dataInCodeSize = read32(&ldc->datasize, isBig);
-      }
-      break;
-    case LC_LOAD_DYLIB:
-    case LC_LOAD_WEAK_DYLIB:
-    case LC_REEXPORT_DYLIB:
-    case LC_LOAD_UPWARD_DYLIB: {
-      const dylib_command *dl = reinterpret_cast<const dylib_command*>(lc);
-      DependentDylib entry;
-      entry.path = lc + read32(&dl->dylib.name, isBig);
-      entry.kind = LoadCommandType(cmd);
-      entry.compatVersion = read32(&dl->dylib.compatibility_version, isBig);
-      entry.currentVersion = read32(&dl->dylib.current_version, isBig);
-      f->dependentDylibs.push_back(entry);
-     }
-      break;
-    case LC_RPATH: {
-      const rpath_command *rpc = reinterpret_cast<const rpath_command *>(lc);
-      f->rpaths.push_back(lc + read32(&rpc->path, isBig));
-     }
-      break;
-    case LC_DYLD_INFO:
-    case LC_DYLD_INFO_ONLY:
-      dyldInfo = reinterpret_cast<const dyld_info_command*>(lc);
-      break;
-    case LC_VERSION_MIN_MACOSX:
-    case LC_VERSION_MIN_IPHONEOS:
-    case LC_VERSION_MIN_WATCHOS:
-    case LC_VERSION_MIN_TVOS:
-      // If we are emitting an object file, then we may take the load command
-      // kind from these commands and pass it on to the output
-      // file.
-      f->minOSVersionKind = (LoadCommandType)cmd;
-      break;
-    }
-    return false;
-  });
-  if (ec)
-    return std::move(ec);
-
-  if (dataInCode) {
-    // Convert on-disk data_in_code_entry array to DataInCode vector.
-    for (unsigned i=0; i < dataInCodeSize/sizeof(data_in_code_entry); ++i) {
-      DataInCode entry;
-      entry.offset = read32(&dataInCode[i].offset, isBig);
-      entry.length = read16(&dataInCode[i].length, isBig);
-      entry.kind =
-          (DataRegionType)read16((const uint8_t *)&dataInCode[i].kind, isBig);
-      f->dataInCode.push_back(entry);
-    }
-  }
-
-  if (dyldInfo) {
-    // If any exports, extract and add to normalized exportInfo vector.
-    if (dyldInfo->export_size) {
-      const uint8_t *trieStart = reinterpret_cast<const uint8_t *>(
-          start + read32(&dyldInfo->export_off, isBig));
-      ArrayRef<uint8_t> trie(trieStart, read32(&dyldInfo->export_size, isBig));
-      Error Err = Error::success();
-      for (const ExportEntry &trieExport : MachOObjectFile::exports(Err, trie)) {
-        Export normExport;
-        normExport.name = trieExport.name().copy(f->ownedAllocations);
-        normExport.offset = trieExport.address();
-        normExport.kind = ExportSymbolKind(trieExport.flags() & EXPORT_SYMBOL_FLAGS_KIND_MASK);
-        normExport.flags = trieExport.flags() & ~EXPORT_SYMBOL_FLAGS_KIND_MASK;
-        normExport.otherOffset = trieExport.other();
-        if (!trieExport.otherName().empty())
-          normExport.otherName = trieExport.otherName().copy(f->ownedAllocations);
-        f->exportInfo.push_back(normExport);
-      }
-      if (Err)
-        return std::move(Err);
-    }
-  }
-
-  return std::move(f);
-}
-
-class MachOObjectReader : public Reader {
-public:
-  MachOObjectReader(MachOLinkingContext &ctx) : _ctx(ctx) {}
-
-  bool canParse(file_magic magic, MemoryBufferRef mb) const override {
-    return (magic == file_magic::macho_object && mb.getBufferSize() > 32);
-  }
-
-  ErrorOr<std::unique_ptr<File>>
-  loadFile(std::unique_ptr<MemoryBuffer> mb,
-           const Registry &registry) const override {
-    std::unique_ptr<File> ret =
-      std::make_unique<MachOFile>(std::move(mb), &_ctx);
-    return std::move(ret);
-  }
-
-private:
-  MachOLinkingContext &_ctx;
-};
-
-class MachODylibReader : public Reader {
-public:
-  MachODylibReader(MachOLinkingContext &ctx) : _ctx(ctx) {}
-
-  bool canParse(file_magic magic, MemoryBufferRef mb) const override {
-    switch (magic) {
-    case file_magic::macho_dynamically_linked_shared_lib:
-    case file_magic::macho_dynamically_linked_shared_lib_stub:
-      return mb.getBufferSize() > 32;
-    default:
-      return false;
-    }
-  }
-
-  ErrorOr<std::unique_ptr<File>>
-  loadFile(std::unique_ptr<MemoryBuffer> mb,
-           const Registry &registry) const override {
-    std::unique_ptr<File> ret =
-        std::make_unique<MachODylibFile>(std::move(mb), &_ctx);
-    return std::move(ret);
-  }
-
-private:
-  MachOLinkingContext &_ctx;
-};
-
-class MachOTAPIReader : public Reader {
-public:
-  MachOTAPIReader(MachOLinkingContext &ctx) : _ctx(ctx) {}
-
-  bool canParse(file_magic magic, MemoryBufferRef mb) const override {
-    return magic == file_magic::tapi_file;
-  }
-
-  ErrorOr<std::unique_ptr<File>>
-  loadFile(std::unique_ptr<MemoryBuffer> mb,
-           const Registry &registry) const override {
-    std::unique_ptr<File> ret =
-        std::make_unique<TAPIFile>(std::move(mb), &_ctx);
-    return std::move(ret);
-  }
-
-private:
-  MachOLinkingContext &_ctx;
-};
-
-} // namespace normalized
-} // namespace mach_o
-
-void Registry::addSupportMachOObjects(MachOLinkingContext &ctx) {
-  MachOLinkingContext::Arch arch = ctx.arch();
-  add(std::unique_ptr<Reader>(new mach_o::normalized::MachOObjectReader(ctx)));
-  add(std::unique_ptr<Reader>(new mach_o::normalized::MachODylibReader(ctx)));
-  add(std::unique_ptr<Reader>(new mach_o::normalized::MachOTAPIReader(ctx)));
-  addKindTable(Reference::KindNamespace::mach_o, ctx.archHandler().kindArch(),
-               ctx.archHandler().kindStrings());
-  add(std::unique_ptr<YamlIOTaggedDocumentHandler>(
-                           new mach_o::MachOYamlIOTaggedDocumentHandler(arch)));
-}
-
-
-} // namespace lld