Update aosp/master LLVM for rebase to r230699.

Change-Id: I2b5be30509658cb8266be782de0ab24f9099f9b9

11 files changed, 185 insertions, 86 deletions

diff --git a/include/llvm/Object/Archive.h b/include/llvm/Object/Archive.h
index 7c03dcd..4f8e281 100644
--- a/include/llvm/Object/Archive.h
+++ b/include/llvm/Object/Archive.h
@@ -14,8 +14,8 @@
 #ifndef LLVM_OBJECT_ARCHIVE_H
 #define LLVM_OBJECT_ARCHIVE_H
 
-#include "llvm/ADT/iterator_range.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/iterator_range.h"
 #include "llvm/Object/Binary.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/ErrorOr.h"
@@ -41,6 +41,9 @@ struct ArchiveMemberHeader {
 
   sys::fs::perms getAccessMode() const;
   sys::TimeValue getLastModified() const;
+  llvm::StringRef getRawLastModified() const {
+    return StringRef(LastModified, sizeof(LastModified)).rtrim(" ");
+  }
   unsigned getUID() const;
   unsigned getGID() const;
 };
@@ -78,17 +81,23 @@ public:
     sys::TimeValue getLastModified() const {
       return getHeader()->getLastModified();
     }
+    StringRef getRawLastModified() const {
+      return getHeader()->getRawLastModified();
+    }
     unsigned getUID() const { return getHeader()->getUID(); }
     unsigned getGID() const { return getHeader()->getGID(); }
     sys::fs::perms getAccessMode() const {
       return getHeader()->getAccessMode();
     }
     /// \return the size of the archive member without the header or padding.
-    uint64_t getSize() const { return Data.size() - StartOfFile; }
+    uint64_t getSize() const;
+    /// \return the size in the archive header for this member.
+    uint64_t getRawSize() const;
 
     StringRef getBuffer() const {
       return StringRef(Data.data() + StartOfFile, getSize());
     }
+    uint64_t getChildOffset() const;
 
     ErrorOr<MemoryBufferRef> getMemoryBufferRef() const;
 
@@ -169,13 +178,12 @@ public:
 
   enum Kind {
     K_GNU,
+    K_MIPS64,
     K_BSD,
     K_COFF
   };
 
-  Kind kind() const { 
-    return Format;
-  }
+  Kind kind() const { return (Kind)Format; }
 
   child_iterator child_begin(bool SkipInternal = true) const;
   child_iterator child_end() const;
@@ -196,12 +204,14 @@ public:
   child_iterator findSym(StringRef name) const;
 
   bool hasSymbolTable() const;
+  child_iterator getSymbolTableChild() const { return SymbolTable; }
 
 private:
   child_iterator SymbolTable;
   child_iterator StringTable;
   child_iterator FirstRegular;
-  Kind Format;
+  unsigned Format : 2;
+  unsigned IsThin : 1;
 };
 
 }
diff --git a/include/llvm/Object/Binary.h b/include/llvm/Object/Binary.h
index 4b2b7e6..a3d6d0d 100644
--- a/include/llvm/Object/Binary.h
+++ b/include/llvm/Object/Binary.h
@@ -28,8 +28,8 @@ namespace object {
 
 class Binary {
 private:
-  Binary() LLVM_DELETED_FUNCTION;
-  Binary(const Binary &other) LLVM_DELETED_FUNCTION;
+  Binary() = delete;
+  Binary(const Binary &other) = delete;
 
   unsigned int TypeID;
 
diff --git a/include/llvm/Object/COFF.h b/include/llvm/Object/COFF.h
index 3368d68..522bf68 100644
--- a/include/llvm/Object/COFF.h
+++ b/include/llvm/Object/COFF.h
@@ -276,12 +276,14 @@ public:
   }
 
   const StringTableOffset &getStringTableOffset() const {
+    assert(isSet() && "COFFSymbolRef points to nothing!");
     return CS16 ? CS16->Name.Offset : CS32->Name.Offset;
   }
 
   uint32_t getValue() const { return CS16 ? CS16->Value : CS32->Value; }
 
   int32_t getSectionNumber() const {
+    assert(isSet() && "COFFSymbolRef points to nothing!");
     if (CS16) {
       // Reserved sections are returned as negative numbers.
       if (CS16->SectionNumber <= COFF::MaxNumberOfSections16)
@@ -291,13 +293,18 @@ public:
     return static_cast<int32_t>(CS32->SectionNumber);
   }
 
-  uint16_t getType() const { return CS16 ? CS16->Type : CS32->Type; }
+  uint16_t getType() const {
+    assert(isSet() && "COFFSymbolRef points to nothing!");
+    return CS16 ? CS16->Type : CS32->Type;
+  }
 
   uint8_t getStorageClass() const {
+    assert(isSet() && "COFFSymbolRef points to nothing!");
     return CS16 ? CS16->StorageClass : CS32->StorageClass;
   }
 
   uint8_t getNumberOfAuxSymbols() const {
+    assert(isSet() && "COFFSymbolRef points to nothing!");
     return CS16 ? CS16->NumberOfAuxSymbols : CS32->NumberOfAuxSymbols;
   }
 
@@ -360,6 +367,8 @@ public:
   }
 
 private:
+  bool isSet() const { return CS16 || CS32; }
+
   const coff_symbol16 *CS16;
   const coff_symbol32 *CS32;
 };
@@ -593,9 +602,6 @@ protected:
   bool isSectionData(DataRefImpl Sec) const override;
   bool isSectionBSS(DataRefImpl Sec) const override;
   bool isSectionVirtual(DataRefImpl Sec) const override;
-  bool isSectionZeroInit(DataRefImpl Sec) const override;
-  bool isSectionReadOnlyData(DataRefImpl Sec) const override;
-  bool isSectionRequiredForExecution(DataRefImpl Sec) const override;
   bool sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb) const override;
   relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
   relocation_iterator section_rel_end(DataRefImpl Sec) const override;
diff --git a/include/llvm/Object/ELFObjectFile.h b/include/llvm/Object/ELFObjectFile.h
index 3fcd98d..e7eba97 100644
--- a/include/llvm/Object/ELFObjectFile.h
+++ b/include/llvm/Object/ELFObjectFile.h
@@ -48,6 +48,9 @@ public:
   virtual std::error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
                                            bool &IsDefault) const = 0;
 
+  virtual uint64_t getSectionFlags(SectionRef Sec) const = 0;
+  virtual uint32_t getSectionType(SectionRef Sec) const = 0;
+
   static inline bool classof(const Binary *v) { return v->isELF(); }
 };
 
@@ -97,10 +100,7 @@ protected:
   bool isSectionText(DataRefImpl Sec) const override;
   bool isSectionData(DataRefImpl Sec) const override;
   bool isSectionBSS(DataRefImpl Sec) const override;
-  bool isSectionRequiredForExecution(DataRefImpl Sec) const override;
   bool isSectionVirtual(DataRefImpl Sec) const override;
-  bool isSectionZeroInit(DataRefImpl Sec) const override;
-  bool isSectionReadOnlyData(DataRefImpl Sec) const override;
   bool sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb) const override;
   relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
   relocation_iterator section_rel_end(DataRefImpl Sec) const override;
@@ -177,6 +177,20 @@ protected:
     return DRI;
   }
 
+  bool isExportedToOtherDSO(const Elf_Sym *ESym) const {
+    unsigned char Binding = ESym->getBinding();
+    unsigned char Visibility = ESym->getVisibility();
+
+    // A symbol is exported if its binding is either GLOBAL or WEAK, and its
+    // visibility is either DEFAULT or PROTECTED. All other symbols are not
+    // exported.
+    if ((Binding == ELF::STB_GLOBAL || Binding == ELF::STB_WEAK) &&
+        (Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_PROTECTED))
+      return true;
+
+    return false;
+  }
+
   // This flag is used for classof, to distinguish ELFObjectFile from
   // its subclass. If more subclasses will be created, this flag will
   // have to become an enum.
@@ -201,6 +215,9 @@ public:
   std::error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
                                    bool &IsDefault) const override;
 
+  uint64_t getSectionFlags(SectionRef Sec) const override;
+  uint32_t getSectionType(SectionRef Sec) const override;
+
   uint8_t getBytesInAddress() const override;
   StringRef getFileFormatName() const override;
   unsigned getArch() const override;
@@ -262,6 +279,18 @@ std::error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
 }
 
 template <class ELFT>
+uint64_t ELFObjectFile<ELFT>::getSectionFlags(SectionRef Sec) const {
+  DataRefImpl DRI = Sec.getRawDataRefImpl();
+  return toELFShdrIter(DRI)->sh_flags;
+}
+
+template <class ELFT>
+uint32_t ELFObjectFile<ELFT>::getSectionType(SectionRef Sec) const {
+  DataRefImpl DRI = Sec.getRawDataRefImpl();
+  return toELFShdrIter(DRI)->sh_type;
+}
+
+template <class ELFT>
 std::error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
                                                       uint64_t &Result) const {
   const Elf_Sym *ESym = getSymbol(Symb);
@@ -280,12 +309,16 @@ std::error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
   const Elf_Ehdr *Header = EF.getHeader();
   Result = ESym->st_value;
 
-  // Clear the ARM/Thumb indicator flag.
-  if (Header->e_machine == ELF::EM_ARM && ESym->getType() == ELF::STT_FUNC)
+  // Clear the ARM/Thumb or microMIPS indicator flag.
+  if ((Header->e_machine == ELF::EM_ARM || Header->e_machine == ELF::EM_MIPS) &&
+      ESym->getType() == ELF::STT_FUNC)
     Result &= ~1;
 
-  if (Header->e_type == ELF::ET_REL)
-    Result += EF.getSection(ESym)->sh_addr;
+  if (Header->e_type == ELF::ET_REL) {
+    const typename ELFFile<ELFT>::Elf_Shdr * Section = EF.getSection(ESym);
+    if (Section != nullptr)
+      Result += Section->sh_addr;
+  }
 
   return object_error::success;
 }
@@ -373,6 +406,9 @@ uint32_t ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb) const {
       EF.getSymbolTableIndex(ESym) == ELF::SHN_COMMON)
     Result |= SymbolRef::SF_Common;
 
+  if (isExportedToOtherDSO(ESym))
+    Result |= SymbolRef::SF_Exported;
+
   return Result;
 }
 
@@ -451,27 +487,11 @@ bool ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec) const {
 }
 
 template <class ELFT>
-bool ELFObjectFile<ELFT>::isSectionRequiredForExecution(DataRefImpl Sec) const {
-  return toELFShdrIter(Sec)->sh_flags & ELF::SHF_ALLOC;
-}
-
-template <class ELFT>
 bool ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec) const {
   return toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
 }
 
 template <class ELFT>
-bool ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec) const {
-  return toELFShdrIter(Sec)->sh_type == ELF::SHT_NOBITS;
-}
-
-template <class ELFT>
-bool ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec) const {
-  Elf_Shdr_Iter EShdr = toELFShdrIter(Sec);
-  return !(EShdr->sh_flags & (ELF::SHF_WRITE | ELF::SHF_EXECINSTR));
-}
-
-template <class ELFT>
 bool ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
                                                 DataRefImpl Symb) const {
   Elf_Sym_Iter ESym = toELFSymIter(Symb);
diff --git a/include/llvm/Object/ELFTypes.h b/include/llvm/Object/ELFTypes.h
index 4bc0c7c..9a97f7b 100644
--- a/include/llvm/Object/ELFTypes.h
+++ b/include/llvm/Object/ELFTypes.h
@@ -302,7 +302,10 @@ struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, false> {
     assert(!isMips64EL);
     return r_info;
   }
-  void setRInfo(uint32_t R) { r_info = R; }
+  void setRInfo(uint32_t R, bool IsMips64EL) {
+    assert(!IsMips64EL);
+    r_info = R;
+  }
 };
 
 template <endianness TargetEndianness, std::size_t MaxAlign>
@@ -321,9 +324,12 @@ struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, false> {
     return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
            ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
   }
-  void setRInfo(uint64_t R) {
-    // FIXME: Add mips64el support.
-    r_info = R;
+  void setRInfo(uint64_t R, bool IsMips64EL) {
+    if (IsMips64EL)
+      r_info = (R >> 32) | ((R & 0xff000000) << 8) | ((R & 0x00ff0000) << 24) |
+               ((R & 0x0000ff00) << 40) | ((R & 0x000000ff) << 56);
+    else
+      r_info = R;
   }
 };
 
@@ -338,7 +344,10 @@ struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, true> {
     assert(!isMips64EL);
     return r_info;
   }
-  void setRInfo(uint32_t R) { r_info = R; }
+  void setRInfo(uint32_t R, bool IsMips64EL) {
+    assert(!IsMips64EL);
+    r_info = R;
+  }
 };
 
 template <endianness TargetEndianness, std::size_t MaxAlign>
@@ -358,9 +367,12 @@ struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, true> {
     return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
            ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
   }
-  void setRInfo(uint64_t R) {
-    // FIXME: Add mips64el support.
-    r_info = R;
+  void setRInfo(uint64_t R, bool IsMips64EL) {
+    if (IsMips64EL)
+      r_info = (R >> 32) | ((R & 0xff000000) << 8) | ((R & 0x00ff0000) << 24) |
+               ((R & 0x0000ff00) << 40) | ((R & 0x000000ff) << 56);
+    else
+      r_info = R;
   }
 };
 
@@ -380,10 +392,14 @@ struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, true>,
   uint32_t getType(bool isMips64EL) const {
     return (uint32_t)(this->getRInfo(isMips64EL) & 0xffffffffL);
   }
-  void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
-  void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
-  void setSymbolAndType(uint32_t s, uint32_t t) {
-    this->setRInfo(((uint64_t)s << 32) + (t & 0xffffffffL));
+  void setSymbol(uint32_t s, bool IsMips64EL) {
+    setSymbolAndType(s, getType(), IsMips64EL);
+  }
+  void setType(uint32_t t, bool IsMips64EL) {
+    setSymbolAndType(getSymbol(), t, IsMips64EL);
+  }
+  void setSymbolAndType(uint32_t s, uint32_t t, bool IsMips64EL) {
+    this->setRInfo(((uint64_t)s << 32) + (t & 0xffffffffL), IsMips64EL);
   }
 };
 
@@ -401,10 +417,14 @@ struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, false>,
   unsigned char getType(bool isMips64EL) const {
     return (unsigned char)(this->getRInfo(isMips64EL) & 0x0ff);
   }
-  void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
-  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
-  void setSymbolAndType(uint32_t s, unsigned char t) {
-    this->setRInfo((s << 8) + t);
+  void setSymbol(uint32_t s, bool IsMips64EL) {
+    setSymbolAndType(s, getType(), IsMips64EL);
+  }
+  void setType(unsigned char t, bool IsMips64EL) {
+    setSymbolAndType(getSymbol(), t, IsMips64EL);
+  }
+  void setSymbolAndType(uint32_t s, unsigned char t, bool IsMips64EL) {
+    this->setRInfo((s << 8) + t, IsMips64EL);
   }
 };
 
diff --git a/include/llvm/Object/ELFYAML.h b/include/llvm/Object/ELFYAML.h
index 687611d..45cbdbd 100644
--- a/include/llvm/Object/ELFYAML.h
+++ b/include/llvm/Object/ELFYAML.h
@@ -40,7 +40,8 @@ LLVM_YAML_STRONG_TYPEDEF(uint8_t, ELF_ELFOSABI)
 // Just use 64, since it can hold 32-bit values too.
 LLVM_YAML_STRONG_TYPEDEF(uint64_t, ELF_EF)
 LLVM_YAML_STRONG_TYPEDEF(uint32_t, ELF_SHT)
-LLVM_YAML_STRONG_TYPEDEF(uint8_t, ELF_REL)
+LLVM_YAML_STRONG_TYPEDEF(uint32_t, ELF_REL)
+LLVM_YAML_STRONG_TYPEDEF(uint8_t, ELF_RSS)
 // Just use 64, since it can hold 32-bit values too.
 LLVM_YAML_STRONG_TYPEDEF(uint64_t, ELF_SHF)
 LLVM_YAML_STRONG_TYPEDEF(uint8_t, ELF_STT)
@@ -71,14 +72,20 @@ struct LocalGlobalWeakSymbols {
   std::vector<Symbol> Global;
   std::vector<Symbol> Weak;
 };
+
+struct SectionOrType {
+  StringRef sectionNameOrType;
+};
+
 struct Section {
-  enum class SectionKind { RawContent, Relocation };
+  enum class SectionKind { Group, RawContent, Relocation };
   SectionKind Kind;
   StringRef Name;
   ELF_SHT Type;
   ELF_SHF Flags;
   llvm::yaml::Hex64 Address;
   StringRef Link;
+  StringRef Info;
   llvm::yaml::Hex64 AddressAlign;
   Section(SectionKind Kind) : Kind(Kind) {}
   virtual ~Section();
@@ -91,6 +98,17 @@ struct RawContentSection : Section {
     return S->Kind == SectionKind::RawContent;
   }
 };
+
+struct Group : Section {
+  // Members of a group contain a flag and a list of section indices
+  // that are part of the group.
+  std::vector<SectionOrType> Members;
+  Group() : Section(SectionKind::Group) {}
+  static bool classof(const Section *S) {
+    return S->Kind == SectionKind::Group;
+  }
+};
+
 struct Relocation {
   llvm::yaml::Hex64 Offset;
   int64_t Addend;
@@ -98,7 +116,6 @@ struct Relocation {
   StringRef Symbol;
 };
 struct RelocationSection : Section {
-  StringRef Info;
   std::vector<Relocation> Relocations;
   RelocationSection() : Section(SectionKind::Relocation) {}
   static bool classof(const Section *S) {
@@ -121,6 +138,7 @@ struct Object {
 LLVM_YAML_IS_SEQUENCE_VECTOR(std::unique_ptr<llvm::ELFYAML::Section>)
 LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::ELFYAML::Symbol)
 LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::ELFYAML::Relocation)
+LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::ELFYAML::SectionOrType)
 
 namespace llvm {
 namespace yaml {
@@ -186,6 +204,11 @@ struct ScalarEnumerationTraits<ELFYAML::ELF_REL> {
 };
 
 template <>
+struct ScalarEnumerationTraits<ELFYAML::ELF_RSS> {
+  static void enumeration(IO &IO, ELFYAML::ELF_RSS &Value);
+};
+
+template <>
 struct MappingTraits<ELFYAML::FileHeader> {
   static void mapping(IO &IO, ELFYAML::FileHeader &FileHdr);
 };
@@ -215,6 +238,10 @@ struct MappingTraits<ELFYAML::Object> {
   static void mapping(IO &IO, ELFYAML::Object &Object);
 };
 
+template <> struct MappingTraits<ELFYAML::SectionOrType> {
+  static void mapping(IO &IO, ELFYAML::SectionOrType &sectionOrType);
+};
+
 } // end namespace yaml
 } // end namespace llvm
 
diff --git a/include/llvm/Object/IRObjectFile.h b/include/llvm/Object/IRObjectFile.h
index b650d5d..74f4666 100644
--- a/include/llvm/Object/IRObjectFile.h
+++ b/include/llvm/Object/IRObjectFile.h
@@ -36,7 +36,10 @@ public:
   std::error_code printSymbolName(raw_ostream &OS,
                                   DataRefImpl Symb) const override;
   uint32_t getSymbolFlags(DataRefImpl Symb) const override;
-  const GlobalValue *getSymbolGV(DataRefImpl Symb) const;
+  GlobalValue *getSymbolGV(DataRefImpl Symb);
+  const GlobalValue *getSymbolGV(DataRefImpl Symb) const {
+    return const_cast<IRObjectFile *>(this)->getSymbolGV(Symb);
+  }
   basic_symbol_iterator symbol_begin_impl() const override;
   basic_symbol_iterator symbol_end_impl() const override;
 
@@ -46,6 +49,7 @@ public:
   Module &getModule() {
     return *M;
   }
+  std::unique_ptr<Module> takeModule();
 
   static inline bool classof(const Binary *v) {
     return v->isIR();
@@ -61,8 +65,8 @@ public:
   static ErrorOr<MemoryBufferRef>
   findBitcodeInMemBuffer(MemoryBufferRef Object);
 
-  static ErrorOr<std::unique_ptr<IRObjectFile>>
-  createIRObjectFile(MemoryBufferRef Object, LLVMContext &Context);
+  static ErrorOr<std::unique_ptr<IRObjectFile>> create(MemoryBufferRef Object,
+                                                       LLVMContext &Context);
 };
 }
 }
diff --git a/include/llvm/Object/MachO.h b/include/llvm/Object/MachO.h
index 768cda6..a552aca 100644
--- a/include/llvm/Object/MachO.h
+++ b/include/llvm/Object/MachO.h
@@ -200,6 +200,7 @@ public:
 
   // MachO specific.
   std::error_code getIndirectName(DataRefImpl Symb, StringRef &Res) const;
+  unsigned getSectionType(SectionRef Sec) const;
 
   std::error_code getSymbolAddress(DataRefImpl Symb,
                                    uint64_t &Res) const override;
@@ -223,10 +224,7 @@ public:
   bool isSectionText(DataRefImpl Sec) const override;
   bool isSectionData(DataRefImpl Sec) const override;
   bool isSectionBSS(DataRefImpl Sec) const override;
-  bool isSectionRequiredForExecution(DataRefImpl Sec) const override;
   bool isSectionVirtual(DataRefImpl Sec) const override;
-  bool isSectionZeroInit(DataRefImpl Sec) const override;
-  bool isSectionReadOnlyData(DataRefImpl Sec) const override;
   bool sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb) const override;
   relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
   relocation_iterator section_rel_end(DataRefImpl Sec) const override;
@@ -348,8 +346,8 @@ public:
   getSegmentLoadCommand(const LoadCommandInfo &L) const;
   MachO::segment_command_64
   getSegment64LoadCommand(const LoadCommandInfo &L) const;
-  MachO::linker_options_command
-  getLinkerOptionsLoadCommand(const LoadCommandInfo &L) const;
+  MachO::linker_option_command
+  getLinkerOptionLoadCommand(const LoadCommandInfo &L) const;
   MachO::version_min_command
   getVersionMinLoadCommand(const LoadCommandInfo &L) const;
   MachO::dylib_command
@@ -360,10 +358,30 @@ public:
   getDylinkerCommand(const LoadCommandInfo &L) const;
   MachO::uuid_command
   getUuidCommand(const LoadCommandInfo &L) const;
+  MachO::rpath_command
+  getRpathCommand(const LoadCommandInfo &L) const;
   MachO::source_version_command
   getSourceVersionCommand(const LoadCommandInfo &L) const;
   MachO::entry_point_command
   getEntryPointCommand(const LoadCommandInfo &L) const;
+  MachO::encryption_info_command
+  getEncryptionInfoCommand(const LoadCommandInfo &L) const;
+  MachO::encryption_info_command_64
+  getEncryptionInfoCommand64(const LoadCommandInfo &L) const;
+  MachO::sub_framework_command
+  getSubFrameworkCommand(const LoadCommandInfo &L) const;
+  MachO::sub_umbrella_command
+  getSubUmbrellaCommand(const LoadCommandInfo &L) const;
+  MachO::sub_library_command
+  getSubLibraryCommand(const LoadCommandInfo &L) const;
+  MachO::sub_client_command
+  getSubClientCommand(const LoadCommandInfo &L) const;
+  MachO::routines_command
+  getRoutinesCommand(const LoadCommandInfo &L) const;
+  MachO::routines_command_64
+  getRoutinesCommand64(const LoadCommandInfo &L) const;
+  MachO::thread_command
+  getThreadCommand(const LoadCommandInfo &L) const;
 
   MachO::any_relocation_info getRelocation(DataRefImpl Rel) const;
   MachO::data_in_code_entry getDice(DataRefImpl Rel) const;
@@ -377,6 +395,7 @@ public:
   MachO::symtab_command getSymtabLoadCommand() const;
   MachO::dysymtab_command getDysymtabLoadCommand() const;
   MachO::linkedit_data_command getDataInCodeLoadCommand() const;
+  MachO::linkedit_data_command getLinkOptHintsLoadCommand() const;
   ArrayRef<uint8_t> getDyldInfoRebaseOpcodes() const;
   ArrayRef<uint8_t> getDyldInfoBindOpcodes() const;
   ArrayRef<uint8_t> getDyldInfoWeakBindOpcodes() const;
@@ -419,6 +438,7 @@ private:
   const char *SymtabLoadCmd;
   const char *DysymtabLoadCmd;
   const char *DataInCodeLoadCmd;
+  const char *LinkOptHintsLoadCmd;
   const char *DyldInfoLoadCmd;
   const char *UuidLoadCmd;
   bool HasPageZeroSegment;
diff --git a/include/llvm/Object/MachOUniversal.h b/include/llvm/Object/MachOUniversal.h
index 46cf3fb..93f6654 100644
--- a/include/llvm/Object/MachOUniversal.h
+++ b/include/llvm/Object/MachOUniversal.h
@@ -16,8 +16,8 @@
 
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Triple.h"
-#include "llvm/Object/Binary.h"
 #include "llvm/Object/Archive.h"
+#include "llvm/Object/Binary.h"
 #include "llvm/Object/MachO.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/MachO.h"
@@ -51,6 +51,10 @@ public:
 
     ObjectForArch getNext() const { return ObjectForArch(Parent, Index + 1); }
     uint32_t getCPUType() const { return Header.cputype; }
+    uint32_t getCPUSubType() const { return Header.cpusubtype; }
+    uint32_t getOffset() const { return Header.offset; }
+    uint32_t getSize() const { return Header.size; }
+    uint32_t getAlign() const { return Header.align; }
     std::string getArchTypeName() const {
       Triple T = MachOObjectFile::getArch(Header.cputype, Header.cpusubtype);
       return T.getArchName();
@@ -58,7 +62,7 @@ public:
 
     ErrorOr<std::unique_ptr<MachOObjectFile>> getAsObjectFile() const;
 
-    std::error_code getAsArchive(std::unique_ptr<Archive> &Result) const;
+    ErrorOr<std::unique_ptr<Archive>> getAsArchive() const;
   };
 
   class object_iterator {
diff --git a/include/llvm/Object/ObjectFile.h b/include/llvm/Object/ObjectFile.h
index 68b873a..b7e19b9 100644
--- a/include/llvm/Object/ObjectFile.h
+++ b/include/llvm/Object/ObjectFile.h
@@ -105,10 +105,7 @@ public:
   bool isText() const;
   bool isData() const;
   bool isBSS() const;
-  bool isRequiredForExecution() const;
   bool isVirtual() const;
-  bool isZeroInit() const;
-  bool isReadOnlyData() const;
 
   bool containsSymbol(SymbolRef S) const;
 
@@ -121,6 +118,7 @@ public:
   section_iterator getRelocatedSection() const;
 
   DataRefImpl getRawDataRefImpl() const;
+  const ObjectFile *getObject() const;
 };
 
 /// SymbolRef - This is a value type class that represents a single symbol in
@@ -182,8 +180,8 @@ public:
 /// figures out which type to create.
 class ObjectFile : public SymbolicFile {
   virtual void anchor();
-  ObjectFile() LLVM_DELETED_FUNCTION;
-  ObjectFile(const ObjectFile &other) LLVM_DELETED_FUNCTION;
+  ObjectFile() = delete;
+  ObjectFile(const ObjectFile &other) = delete;
 
 protected:
   ObjectFile(unsigned int Type, MemoryBufferRef Source);
@@ -233,11 +231,8 @@ protected:
   virtual bool isSectionText(DataRefImpl Sec) const = 0;
   virtual bool isSectionData(DataRefImpl Sec) const = 0;
   virtual bool isSectionBSS(DataRefImpl Sec) const = 0;
-  virtual bool isSectionRequiredForExecution(DataRefImpl Sec) const = 0;
   // A section is 'virtual' if its contents aren't present in the object image.
   virtual bool isSectionVirtual(DataRefImpl Sec) const = 0;
-  virtual bool isSectionZeroInit(DataRefImpl Sec) const = 0;
-  virtual bool isSectionReadOnlyData(DataRefImpl Sec) const = 0;
   virtual bool sectionContainsSymbol(DataRefImpl Sec,
                                      DataRefImpl Symb) const = 0;
   virtual relocation_iterator section_rel_begin(DataRefImpl Sec) const = 0;
@@ -417,22 +412,10 @@ inline bool SectionRef::isBSS() const {
   return OwningObject->isSectionBSS(SectionPimpl);
 }
 
-inline bool SectionRef::isRequiredForExecution() const {
-  return OwningObject->isSectionRequiredForExecution(SectionPimpl);
-}
-
 inline bool SectionRef::isVirtual() const {
   return OwningObject->isSectionVirtual(SectionPimpl);
 }
 
-inline bool SectionRef::isZeroInit() const {
-  return OwningObject->isSectionZeroInit(SectionPimpl);
-}
-
-inline bool SectionRef::isReadOnlyData() const {
-  return OwningObject->isSectionReadOnlyData(SectionPimpl);
-}
-
 inline bool SectionRef::containsSymbol(SymbolRef S) const {
   return OwningObject->sectionContainsSymbol(SectionPimpl,
                                              S.getRawDataRefImpl());
@@ -454,6 +437,10 @@ inline DataRefImpl SectionRef::getRawDataRefImpl() const {
   return SectionPimpl;
 }
 
+inline const ObjectFile *SectionRef::getObject() const {
+  return OwningObject;
+}
+
 /// RelocationRef
 inline RelocationRef::RelocationRef(DataRefImpl RelocationP,
                               const ObjectFile *Owner)
diff --git a/include/llvm/Object/SymbolicFile.h b/include/llvm/Object/SymbolicFile.h
index 435799a..f7b7cb4 100644
--- a/include/llvm/Object/SymbolicFile.h
+++ b/include/llvm/Object/SymbolicFile.h
@@ -87,9 +87,10 @@ public:
     SF_Absolute = 1U << 3,       // Absolute symbol
     SF_Common = 1U << 4,         // Symbol has common linkage
     SF_Indirect = 1U << 5,       // Symbol is an alias to another symbol
-    SF_FormatSpecific = 1U << 6, // Specific to the object file format
+    SF_Exported = 1U << 6,       // Symbol is visible to other DSOs
+    SF_FormatSpecific = 1U << 7, // Specific to the object file format
                                  // (e.g. section symbols)
-    SF_Thumb = 1U << 7           // Thumb symbol in a 32-bit ARM binary
+    SF_Thumb = 1U << 8,          // Thumb symbol in a 32-bit ARM binary
   };
 
   BasicSymbolRef() : OwningObject(nullptr) { }