vendor/llvm/llvm-trunk-r242221

25 files changed, 671 insertions, 340 deletions

diff --git a/tools/dsymutil/DebugMap.cpp b/tools/dsymutil/DebugMap.cpp
index cc7c0dc778b3a..e5cc87b3f3181 100644
--- a/tools/dsymutil/DebugMap.cpp
+++ b/tools/dsymutil/DebugMap.cpp
@@ -216,9 +216,7 @@ MappingTraits<dsymutil::DebugMapObject>::YamlDMO::denormalize(IO &IO) {
     // during the test, we can't hardcode the symbols addresses, so
     // look them up here and rewrite them.
     for (const auto &Sym : ErrOrObjectFile->symbols()) {
-      uint64_t Address;
-      if (Sym.getAddress(Address))
-        continue;
+      uint64_t Address = Sym.getValue();
       ErrorOr<StringRef> Name = Sym.getName();
       if (!Name)
         continue;
diff --git a/tools/dsymutil/MachODebugMapParser.cpp b/tools/dsymutil/MachODebugMapParser.cpp
index c58545aec999e..6c9fa9b513251 100644
--- a/tools/dsymutil/MachODebugMapParser.cpp
+++ b/tools/dsymutil/MachODebugMapParser.cpp
@@ -160,8 +160,6 @@ void MachODebugMapParser::handleStabSymbolTableEntry(uint32_t StringIndex,
     // symbol table to find its address as it might not be in the
     // debug map (for common symbols).
     Value = getMainBinarySymbolAddress(Name);
-    if (Value == UnknownAddress)
-      return;
     break;
   case MachO::N_FUN:
     // Functions are scopes in STABS. They have an end marker that
@@ -197,10 +195,7 @@ void MachODebugMapParser::loadCurrentObjectFileSymbols() {
   CurrentObjectAddresses.clear();
 
   for (auto Sym : CurrentObjectHolder.Get().symbols()) {
-
-    uint64_t Addr;
-    if (Sym.getAddress(Addr) || Addr == UnknownAddress)
-      continue;
+    uint64_t Addr = Sym.getValue();
     ErrorOr<StringRef> Name = Sym.getName();
     if (!Name)
       continue;
@@ -214,7 +209,7 @@ void MachODebugMapParser::loadCurrentObjectFileSymbols() {
 uint64_t MachODebugMapParser::getMainBinarySymbolAddress(StringRef Name) {
   auto Sym = MainBinarySymbolAddresses.find(Name);
   if (Sym == MainBinarySymbolAddresses.end())
-    return UnknownAddress;
+    return 0;
   return Sym->second;
 }
 
@@ -228,15 +223,14 @@ void MachODebugMapParser::loadMainBinarySymbols() {
     // Skip undefined and STAB entries.
     if ((Type & SymbolRef::ST_Debug) || (Type & SymbolRef::ST_Unknown))
       continue;
-    uint64_t Addr;
     // The only symbols of interest are the global variables. These
     // are the only ones that need to be queried because the address
     // of common data won't be described in the debug map. All other
     // addresses should be fetched for the debug map.
-    if (Sym.getAddress(Addr) || Addr == UnknownAddress ||
-        !(Sym.getFlags() & SymbolRef::SF_Global) || Sym.getSection(Section) ||
-        Section->isText())
+    if (!(Sym.getFlags() & SymbolRef::SF_Global) || Sym.getSection(Section) ||
+        Section == MainBinary.section_end() || Section->isText())
       continue;
+    uint64_t Addr = Sym.getValue();
     ErrorOr<StringRef> NameOrErr = Sym.getName();
     if (!NameOrErr)
       continue;
diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 88e7371609927..e33cd795d3ae2 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -333,29 +333,44 @@ static int compileModule(char **argv, LLVMContext &Context) {
       OS = BOS.get();
     }
 
+    AnalysisID StartBeforeID = nullptr;
     AnalysisID StartAfterID = nullptr;
     AnalysisID StopAfterID = nullptr;
     const PassRegistry *PR = PassRegistry::getPassRegistry();
-    if (!StartAfter.empty()) {
-      const PassInfo *PI = PR->getPassInfo(StartAfter);
-      if (!PI) {
-        errs() << argv[0] << ": start-after pass is not registered.\n";
+    if (!RunPass.empty()) {
+      if (!StartAfter.empty() || !StopAfter.empty()) {
+        errs() << argv[0] << ": start-after and/or stop-after passes are "
+                             "redundant when run-pass is specified.\n";
         return 1;
       }
-      StartAfterID = PI->getTypeInfo();
-    }
-    if (!StopAfter.empty()) {
-      const PassInfo *PI = PR->getPassInfo(StopAfter);
+      const PassInfo *PI = PR->getPassInfo(RunPass);
       if (!PI) {
-        errs() << argv[0] << ": stop-after pass is not registered.\n";
+        errs() << argv[0] << ": run-pass pass is not registered.\n";
         return 1;
       }
-      StopAfterID = PI->getTypeInfo();
+      StopAfterID = StartBeforeID = PI->getTypeInfo();
+    } else {
+      if (!StartAfter.empty()) {
+        const PassInfo *PI = PR->getPassInfo(StartAfter);
+        if (!PI) {
+          errs() << argv[0] << ": start-after pass is not registered.\n";
+          return 1;
+        }
+        StartAfterID = PI->getTypeInfo();
+      }
+      if (!StopAfter.empty()) {
+        const PassInfo *PI = PR->getPassInfo(StopAfter);
+        if (!PI) {
+          errs() << argv[0] << ": stop-after pass is not registered.\n";
+          return 1;
+        }
+        StopAfterID = PI->getTypeInfo();
+      }
     }
 
     // Ask the target to add backend passes as necessary.
-    if (Target->addPassesToEmitFile(PM, *OS, FileType, NoVerify, StartAfterID,
-                                    StopAfterID, MIR.get())) {
+    if (Target->addPassesToEmitFile(PM, *OS, FileType, NoVerify, StartBeforeID,
+                                    StartAfterID, StopAfterID, MIR.get())) {
       errs() << argv[0] << ": target does not support generation of this"
              << " file type!\n";
       return 1;
diff --git a/tools/llvm-ar/llvm-ar.cpp b/tools/llvm-ar/llvm-ar.cpp
index 0fd2df4f5aa92..2c9668c63b8cc 100644
--- a/tools/llvm-ar/llvm-ar.cpp
+++ b/tools/llvm-ar/llvm-ar.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/LibDriver/LibDriver.h"
@@ -70,6 +71,16 @@ static cl::list<std::string>
 
 static cl::opt<bool> MRI("M", cl::desc(""));
 
+namespace {
+enum Format { Default, GNU, BSD };
+}
+
+static cl::opt<Format>
+    FormatOpt("format", cl::desc("Archive format to create"),
+              cl::values(clEnumValN(Default, "defalut", "default"),
+                         clEnumValN(GNU, "gnu", "gnu"),
+                         clEnumValN(BSD, "bsd", "bsd"), clEnumValEnd));
+
 std::string Options;
 
 // Provide additional help output explaining the operations and modifiers of
@@ -118,6 +129,7 @@ static bool OriginalDates = false; ///< 'o' modifier
 static bool OnlyUpdate = false;    ///< 'u' modifier
 static bool Verbose = false;       ///< 'v' modifier
 static bool Symtab = true;         ///< 's' modifier
+static bool Deterministic = true;  ///< 'D' and 'U' modifiers
 
 // Relative Positional Argument (for insert/move). This variable holds
 // the name of the archive member to which the 'a', 'b' or 'i' modifier
@@ -234,6 +246,12 @@ static ArchiveOperation parseCommandLine() {
       AddBefore = true;
       NumPositional++;
       break;
+    case 'D':
+      Deterministic = true;
+      break;
+    case 'U':
+      Deterministic = false;
+      break;
     default:
       cl::PrintHelpMessage();
     }
@@ -277,11 +295,13 @@ static ArchiveOperation parseCommandLine() {
 
 // Implements the 'p' operation. This function traverses the archive
 // looking for members that match the path list.
-static void doPrint(StringRef Name, object::Archive::child_iterator I) {
+static void doPrint(StringRef Name, const object::Archive::Child &C) {
   if (Verbose)
     outs() << "Printing " << Name << "\n";
 
-  StringRef Data = I->getBuffer();
+  ErrorOr<StringRef> DataOrErr = C.getBuffer();
+  failIfError(DataOrErr.getError());
+  StringRef Data = *DataOrErr;
   outs().write(Data.data(), Data.size());
 }
 
@@ -306,16 +326,16 @@ static void printMode(unsigned mode) {
 // the file names of each of the members. However, if verbose mode is requested
 // ('v' modifier) then the file type, permission mode, user, group, size, and
 // modification time are also printed.
-static void doDisplayTable(StringRef Name, object::Archive::child_iterator I) {
+static void doDisplayTable(StringRef Name, const object::Archive::Child &C) {
   if (Verbose) {
-    sys::fs::perms Mode = I->getAccessMode();
+    sys::fs::perms Mode = C.getAccessMode();
     printMode((Mode >> 6) & 007);
     printMode((Mode >> 3) & 007);
     printMode(Mode & 007);
-    outs() << ' ' << I->getUID();
-    outs() << '/' << I->getGID();
-    outs() << ' ' << format("%6llu", I->getSize());
-    outs() << ' ' << I->getLastModified().str();
+    outs() << ' ' << C.getUID();
+    outs() << '/' << C.getGID();
+    outs() << ' ' << format("%6llu", C.getSize());
+    outs() << ' ' << C.getLastModified().str();
     outs() << ' ';
   }
   outs() << Name << "\n";
@@ -323,9 +343,9 @@ static void doDisplayTable(StringRef Name, object::Archive::child_iterator I) {
 
 // Implement the 'x' operation. This function extracts files back to the file
 // system.
-static void doExtract(StringRef Name, object::Archive::child_iterator I) {
+static void doExtract(StringRef Name, const object::Archive::Child &C) {
   // Retain the original mode.
-  sys::fs::perms Mode = I->getAccessMode();
+  sys::fs::perms Mode = C.getAccessMode();
   SmallString<128> Storage = Name;
 
   int FD;
@@ -337,7 +357,7 @@ static void doExtract(StringRef Name, object::Archive::child_iterator I) {
     raw_fd_ostream file(FD, false);
 
     // Get the data and its length
-    StringRef Data = I->getBuffer();
+    StringRef Data = *C.getBuffer();
 
     // Write the data.
     file.write(Data.data(), Data.size());
@@ -347,7 +367,7 @@ static void doExtract(StringRef Name, object::Archive::child_iterator I) {
   // now.
   if (OriginalDates)
     failIfError(
-        sys::fs::setLastModificationAndAccessTime(FD, I->getLastModified()));
+        sys::fs::setLastModificationAndAccessTime(FD, C.getLastModified()));
 
   if (close(FD))
     fail("Could not close the file");
@@ -373,31 +393,43 @@ static bool shouldCreateArchive(ArchiveOperation Op) {
 
 static void performReadOperation(ArchiveOperation Operation,
                                  object::Archive *OldArchive) {
-  for (object::Archive::child_iterator I = OldArchive->child_begin(),
-                                       E = OldArchive->child_end();
-       I != E; ++I) {
-    ErrorOr<StringRef> NameOrErr = I->getName();
+  if (Operation == Extract && OldArchive->isThin()) {
+    errs() << "extracting from a thin archive is not supported\n";
+    std::exit(1);
+  }
+
+  bool Filter = !Members.empty();
+  for (const object::Archive::Child &C : OldArchive->children()) {
+    ErrorOr<StringRef> NameOrErr = C.getName();
     failIfError(NameOrErr.getError());
     StringRef Name = NameOrErr.get();
 
-    if (!Members.empty() &&
-        std::find(Members.begin(), Members.end(), Name) == Members.end())
-      continue;
+    if (Filter) {
+      auto I = std::find(Members.begin(), Members.end(), Name);
+      if (I == Members.end())
+        continue;
+      Members.erase(I);
+    }
 
     switch (Operation) {
     default:
       llvm_unreachable("Not a read operation");
     case Print:
-      doPrint(Name, I);
+      doPrint(Name, C);
       break;
     case DisplayTable:
-      doDisplayTable(Name, I);
+      doDisplayTable(Name, C);
       break;
     case Extract:
-      doExtract(Name, I);
+      doExtract(Name, C);
       break;
     }
   }
+  if (Members.empty())
+    return;
+  for (StringRef Name : Members)
+    errs() << Name << " was not found\n";
+  std::exit(1);
 }
 
 template <typename T>
@@ -525,7 +557,8 @@ computeNewArchiveMembers(ArchiveOperation Operation,
   assert(unsigned(InsertPos) <= Ret.size());
   Ret.insert(Ret.begin() + InsertPos, Moved.begin(), Moved.end());
 
-  Ret.insert(Ret.begin() + InsertPos, Members.size(), NewArchiveIterator());
+  Ret.insert(Ret.begin() + InsertPos, Members.size(),
+             NewArchiveIterator("", ""));
   int Pos = InsertPos;
   for (auto &Member : Members) {
     StringRef Name = sys::path::filename(Member);
@@ -539,15 +572,33 @@ computeNewArchiveMembers(ArchiveOperation Operation,
 static void
 performWriteOperation(ArchiveOperation Operation, object::Archive *OldArchive,
                       std::vector<NewArchiveIterator> *NewMembersP) {
+  object::Archive::Kind Kind;
+  switch (FormatOpt) {
+  case Default: {
+    Triple T(sys::getProcessTriple());
+    if (T.isOSDarwin())
+      Kind = object::Archive::K_BSD;
+    else
+      Kind = object::Archive::K_GNU;
+    break;
+  }
+  case GNU:
+    Kind = object::Archive::K_GNU;
+    break;
+  case BSD:
+    Kind = object::Archive::K_BSD;
+    break;
+  }
   if (NewMembersP) {
     std::pair<StringRef, std::error_code> Result =
-        writeArchive(ArchiveName, *NewMembersP, Symtab);
+        writeArchive(ArchiveName, *NewMembersP, Symtab, Kind, Deterministic);
     failIfError(Result.second, Result.first);
     return;
   }
   std::vector<NewArchiveIterator> NewMembers =
       computeNewArchiveMembers(Operation, OldArchive);
-  auto Result = writeArchive(ArchiveName, NewMembers, Symtab);
+  auto Result =
+      writeArchive(ArchiveName, NewMembers, Symtab, Kind, Deterministic);
   failIfError(Result.second, Result.first);
 }
 
diff --git a/tools/llvm-cxxdump/llvm-cxxdump.cpp b/tools/llvm-cxxdump/llvm-cxxdump.cpp
index c627a662a9625..4e06be9e78b96 100644
--- a/tools/llvm-cxxdump/llvm-cxxdump.cpp
+++ b/tools/llvm-cxxdump/llvm-cxxdump.cpp
@@ -207,9 +207,10 @@ static void dumpCXXData(const ObjectFile *Obj) {
     StringRef SecContents;
     if (error(Sec.getContents(SecContents)))
       return;
-    uint64_t SymAddress;
-    if (error(Sym.getAddress(SymAddress)))
+    ErrorOr<uint64_t> SymAddressOrErr = Sym.getAddress();
+    if (error(SymAddressOrErr.getError()))
       return;
+    uint64_t SymAddress = *SymAddressOrErr;
     uint64_t SecAddress = Sec.getAddress();
     uint64_t SecSize = Sec.getSize();
     uint64_t SymOffset = SymAddress - SecAddress;
diff --git a/tools/llvm-jitlistener/CMakeLists.txt b/tools/llvm-jitlistener/CMakeLists.txt
index 68a4303acef0f..61f8420a7ae59 100644
--- a/tools/llvm-jitlistener/CMakeLists.txt
+++ b/tools/llvm-jitlistener/CMakeLists.txt
@@ -6,7 +6,7 @@ include_directories( ${LLVM_INTEL_JITEVENTS_INCDIR} )
 set(LLVM_LINK_COMPONENTS
   asmparser
   bitreader
-  debuginfo
+  DebugInfoDWARF
   inteljitevents
   interpreter
   irreader
@@ -14,6 +14,10 @@ set(LLVM_LINK_COMPONENTS
   nativecodegen
   object
   selectiondag
+  Support
+  ExecutionEngine
+  RuntimeDyld
+  Core
   )
 
 add_llvm_tool(llvm-jitlistener
diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
index c88f373345647..e7ee3124ed731 100644
--- a/tools/llvm-nm/llvm-nm.cpp
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -180,67 +180,25 @@ struct NMSymbol {
   uint64_t Size;
   char TypeChar;
   StringRef Name;
-  DataRefImpl Symb;
+  BasicSymbolRef Sym;
 };
 }
 
 static bool compareSymbolAddress(const NMSymbol &A, const NMSymbol &B) {
-  if (!ReverseSort) {
-    if (A.Address < B.Address)
-      return true;
-    if (A.Address == B.Address && A.Name < B.Name)
-      return true;
-    if (A.Address == B.Address && A.Name == B.Name && A.Size < B.Size)
-      return true;
-    return false;
-  }
-
-  if (A.Address > B.Address)
-    return true;
-  if (A.Address == B.Address && A.Name > B.Name)
-    return true;
-  if (A.Address == B.Address && A.Name == B.Name && A.Size > B.Size)
-    return true;
-  return false;
+  bool ADefined = !(A.Sym.getFlags() & SymbolRef::SF_Undefined);
+  bool BDefined = !(B.Sym.getFlags() & SymbolRef::SF_Undefined);
+  return std::make_tuple(ADefined, A.Address, A.Name, A.Size) <
+         std::make_tuple(BDefined, B.Address, B.Name, B.Size);
 }
 
 static bool compareSymbolSize(const NMSymbol &A, const NMSymbol &B) {
-  if (!ReverseSort) {
-    if (A.Size < B.Size)
-      return true;
-    if (A.Size == B.Size && A.Name < B.Name)
-      return true;
-    if (A.Size == B.Size && A.Name == B.Name && A.Address < B.Address)
-      return true;
-    return false;
-  }
-
-  if (A.Size > B.Size)
-    return true;
-  if (A.Size == B.Size && A.Name > B.Name)
-    return true;
-  if (A.Size == B.Size && A.Name == B.Name && A.Address > B.Address)
-    return true;
-  return false;
+  return std::make_tuple(A.Size, A.Name, A.Address) <
+         std::make_tuple(B.Size, B.Name, B.Address);
 }
 
 static bool compareSymbolName(const NMSymbol &A, const NMSymbol &B) {
-  if (!ReverseSort) {
-    if (A.Name < B.Name)
-      return true;
-    if (A.Name == B.Name && A.Size < B.Size)
-      return true;
-    if (A.Name == B.Name && A.Size == B.Size && A.Address < B.Address)
-      return true;
-    return false;
-  }
-  if (A.Name > B.Name)
-    return true;
-  if (A.Name == B.Name && A.Size > B.Size)
-    return true;
-  if (A.Name == B.Name && A.Size == B.Size && A.Address > B.Address)
-    return true;
-  return false;
+  return std::make_tuple(A.Name, A.Size, A.Address) <
+         std::make_tuple(B.Name, B.Size, B.Address);
 }
 
 static char isSymbolList64Bit(SymbolicFile &Obj) {
@@ -274,11 +232,12 @@ static void darwinPrintSymbol(MachOObjectFile *MachO, SymbolListT::iterator I,
   uint16_t NDesc;
   uint32_t NStrx;
   uint64_t NValue;
+  DataRefImpl SymDRI = I->Sym.getRawDataRefImpl();
   if (MachO->is64Bit()) {
     H_64 = MachO->MachOObjectFile::getHeader64();
     Filetype = H_64.filetype;
     Flags = H_64.flags;
-    STE_64 = MachO->getSymbol64TableEntry(I->Symb);
+    STE_64 = MachO->getSymbol64TableEntry(SymDRI);
     NType = STE_64.n_type;
     NSect = STE_64.n_sect;
     NDesc = STE_64.n_desc;
@@ -288,7 +247,7 @@ static void darwinPrintSymbol(MachOObjectFile *MachO, SymbolListT::iterator I,
     H = MachO->MachOObjectFile::getHeader();
     Filetype = H.filetype;
     Flags = H.flags;
-    STE = MachO->getSymbolTableEntry(I->Symb);
+    STE = MachO->getSymbolTableEntry(SymDRI);
     NType = STE.n_type;
     NSect = STE.n_sect;
     NDesc = STE.n_desc;
@@ -356,7 +315,7 @@ static void darwinPrintSymbol(MachOObjectFile *MachO, SymbolListT::iterator I,
     break;
   case MachO::N_SECT: {
     section_iterator Sec = MachO->section_end();
-    MachO->getSymbolSection(I->Symb, Sec);
+    MachO->getSymbolSection(I->Sym.getRawDataRefImpl(), Sec);
     DataRefImpl Ref = Sec->getRawDataRefImpl();
     StringRef SectionName;
     MachO->getSectionName(Ref, SectionName);
@@ -415,7 +374,7 @@ static void darwinPrintSymbol(MachOObjectFile *MachO, SymbolListT::iterator I,
   if ((NType & MachO::N_TYPE) == MachO::N_INDR) {
     outs() << I->Name << " (for ";
     StringRef IndirectName;
-    if (MachO->getIndirectName(I->Symb, IndirectName))
+    if (MachO->getIndirectName(I->Sym.getRawDataRefImpl(), IndirectName))
       outs() << "?)";
     else
       outs() << IndirectName << ")";
@@ -498,13 +457,14 @@ static void darwinPrintStab(MachOObjectFile *MachO, SymbolListT::iterator I) {
   uint8_t NType;
   uint8_t NSect;
   uint16_t NDesc;
+  DataRefImpl SymDRI = I->Sym.getRawDataRefImpl();
   if (MachO->is64Bit()) {
-    STE_64 = MachO->getSymbol64TableEntry(I->Symb);
+    STE_64 = MachO->getSymbol64TableEntry(SymDRI);
     NType = STE_64.n_type;
     NSect = STE_64.n_sect;
     NDesc = STE_64.n_desc;
   } else {
-    STE = MachO->getSymbolTableEntry(I->Symb);
+    STE = MachO->getSymbolTableEntry(SymDRI);
     NType = STE.n_type;
     NSect = STE.n_sect;
     NDesc = STE.n_desc;
@@ -526,12 +486,17 @@ static void sortAndPrintSymbolList(SymbolicFile &Obj, bool printName,
                                    std::string ArchiveName,
                                    std::string ArchitectureName) {
   if (!NoSort) {
+    std::function<bool(const NMSymbol &, const NMSymbol &)> Cmp;
     if (NumericSort)
-      std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolAddress);
+      Cmp = compareSymbolAddress;
     else if (SizeSort)
-      std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolSize);
+      Cmp = compareSymbolSize;
     else
-      std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolName);
+      Cmp = compareSymbolName;
+
+    if (ReverseSort)
+      Cmp = [=](const NMSymbol &A, const NMSymbol &B) { return Cmp(B, A); };
+    std::sort(SymbolList.begin(), SymbolList.end(), Cmp);
   }
 
   if (!PrintFileName) {
@@ -557,9 +522,11 @@ static void sortAndPrintSymbolList(SymbolicFile &Obj, bool printName,
 
   for (SymbolListT::iterator I = SymbolList.begin(), E = SymbolList.end();
        I != E; ++I) {
-    if ((I->TypeChar != 'U') && UndefinedOnly)
+    uint32_t SymFlags = I->Sym.getFlags();
+    bool Undefined = SymFlags & SymbolRef::SF_Undefined;
+    if (!Undefined && UndefinedOnly)
       continue;
-    if ((I->TypeChar == 'U') && DefinedOnly)
+    if (Undefined && DefinedOnly)
       continue;
     if (SizeSort && !PrintAddress)
       continue;
@@ -578,12 +545,12 @@ static void sortAndPrintSymbolList(SymbolicFile &Obj, bool printName,
     char SymbolAddrStr[18] = "";
     char SymbolSizeStr[18] = "";
 
-    if (OutputFormat == sysv || I->Address == UnknownAddress)
+    if (OutputFormat == sysv || I->TypeChar == 'U')
       strcpy(SymbolAddrStr, printBlanks);
     if (OutputFormat == sysv)
       strcpy(SymbolSizeStr, printBlanks);
 
-    if (I->Address != UnknownAddress)
+    if (I->TypeChar != 'U')
       format(printFormat, I->Address)
           .print(SymbolAddrStr, sizeof(SymbolAddrStr));
     format(printFormat, I->Size).print(SymbolSizeStr, sizeof(SymbolSizeStr));
@@ -895,20 +862,23 @@ static void dumpSymbolNamesFromObject(SymbolicFile &Obj, bool printName,
       continue;
     NMSymbol S;
     S.Size = 0;
-    S.Address = UnknownAddress;
+    S.Address = 0;
     if (PrintSize) {
       if (isa<ELFObjectFileBase>(&Obj))
         S.Size = ELFSymbolRef(Sym).getSize();
     }
     if (PrintAddress && isa<ObjectFile>(Obj)) {
-      if (error(SymbolRef(Sym).getAddress(S.Address)))
+      SymbolRef SymRef(Sym);
+      ErrorOr<uint64_t> AddressOrErr = SymRef.getAddress();
+      if (error(AddressOrErr.getError()))
         break;
+      S.Address = *AddressOrErr;
     }
     S.TypeChar = getNMTypeChar(Obj, Sym);
     if (error(Sym.printName(OS)))
       break;
     OS << '\0';
-    S.Symb = Sym.getRawDataRefImpl();
+    S.Sym = Sym;
     SymbolList.push_back(S);
   }
 
diff --git a/tools/llvm-objdump/COFFDump.cpp b/tools/llvm-objdump/COFFDump.cpp
index 58bdddfa9918e..8b94a50ea28b5 100644
--- a/tools/llvm-objdump/COFFDump.cpp
+++ b/tools/llvm-objdump/COFFDump.cpp
@@ -161,8 +161,10 @@ static std::error_code
 resolveSectionAndAddress(const COFFObjectFile *Obj, const SymbolRef &Sym,
                          const coff_section *&ResolvedSection,
                          uint64_t &ResolvedAddr) {
-  if (std::error_code EC = Sym.getAddress(ResolvedAddr))
+  ErrorOr<uint64_t> ResolvedAddrOrErr = Sym.getAddress();
+  if (std::error_code EC = ResolvedAddrOrErr.getError())
     return EC;
+  ResolvedAddr = *ResolvedAddrOrErr;
   section_iterator iter(Obj->section_begin());
   if (std::error_code EC = Sym.getSection(iter))
     return EC;
diff --git a/tools/llvm-objdump/MachODump.cpp b/tools/llvm-objdump/MachODump.cpp
index 5263c33bf2dcc..04c72f4856c89 100644
--- a/tools/llvm-objdump/MachODump.cpp
+++ b/tools/llvm-objdump/MachODump.cpp
@@ -102,9 +102,6 @@ cl::list<std::string>
                        cl::desc("Prints the specified segment,section for "
                                 "Mach-O objects (requires -macho)"));
 
-cl::opt<bool> llvm::Raw("raw",
-                        cl::desc("Have -section dump the raw binary contents"));
-
 cl::opt<bool>
     llvm::InfoPlist("info-plist",
                     cl::desc("Print the info plist section as strings for "
@@ -178,18 +175,8 @@ static const Target *GetTarget(const MachOObjectFile *MachOObj,
 
 struct SymbolSorter {
   bool operator()(const SymbolRef &A, const SymbolRef &B) {
-    SymbolRef::Type AType = A.getType();
-    SymbolRef::Type BType = B.getType();
-
-    uint64_t AAddr, BAddr;
-    if (AType != SymbolRef::ST_Function)
-      AAddr = 0;
-    else
-      A.getAddress(AAddr);
-    if (BType != SymbolRef::ST_Function)
-      BAddr = 0;
-    else
-      B.getAddress(BAddr);
+    uint64_t AAddr = (A.getType() != SymbolRef::ST_Function) ? 0 : A.getValue();
+    uint64_t BAddr = (B.getType() != SymbolRef::ST_Function) ? 0 : B.getValue();
     return AAddr < BAddr;
   }
 };
@@ -592,8 +579,7 @@ static void CreateSymbolAddressMap(MachOObjectFile *O,
     SymbolRef::Type ST = Symbol.getType();
     if (ST == SymbolRef::ST_Function || ST == SymbolRef::ST_Data ||
         ST == SymbolRef::ST_Other) {
-      uint64_t Address;
-      Symbol.getAddress(Address);
+      uint64_t Address = Symbol.getValue();
       ErrorOr<StringRef> SymNameOrErr = Symbol.getName();
       if (std::error_code EC = SymNameOrErr.getError())
         report_fatal_error(EC.message());
@@ -1057,11 +1043,6 @@ static void DumpSectionContents(StringRef Filename, MachOObjectFile *O,
         uint32_t sect_size = BytesStr.size();
         uint64_t sect_addr = Section.getAddress();
 
-        if (Raw) {
-          outs().write(BytesStr.data(), BytesStr.size());
-          continue;
-        }
-
         outs() << "Contents of (" << SegName << "," << SectName
                << ") section\n";
 
@@ -1190,8 +1171,7 @@ static void ProcessMachO(StringRef Filename, MachOObjectFile *MachOOF,
   // UniversalHeaders or ArchiveHeaders.
   if (Disassemble || PrivateHeaders || ExportsTrie || Rebase || Bind ||
       LazyBind || WeakBind || IndirectSymbols || DataInCode || LinkOptHints ||
-      DylibsUsed || DylibId || ObjcMetaData ||
-      (DumpSections.size() != 0 && !Raw)) {
+      DylibsUsed || DylibId || ObjcMetaData || (DumpSections.size() != 0)) {
     outs() << Filename;
     if (!ArchiveMemberName.empty())
       outs() << '(' << ArchiveMemberName << ')';
@@ -2424,7 +2404,7 @@ static const char *get_pointer_32(uint32_t Address, uint32_t &offset,
 // symbol is passed, look up that address in the info's AddrMap.
 static const char *get_symbol_64(uint32_t sect_offset, SectionRef S,
                                  DisassembleInfo *info, uint64_t &n_value,
-                                 uint64_t ReferenceValue = UnknownAddress) {
+                                 uint64_t ReferenceValue = 0) {
   n_value = 0;
   if (!info->verbose)
     return nullptr;
@@ -2456,9 +2436,7 @@ static const char *get_symbol_64(uint32_t sect_offset, SectionRef S,
   // and return its name.
   const char *SymbolName = nullptr;
   if (reloc_found && isExtern) {
-    Symbol.getAddress(n_value);
-    if (n_value == UnknownAddress)
-      n_value = 0;
+    n_value = Symbol.getValue();
     ErrorOr<StringRef> NameOrError = Symbol.getName();
     if (std::error_code EC = NameOrError.getError())
       report_fatal_error(EC.message());
@@ -2480,8 +2458,7 @@ static const char *get_symbol_64(uint32_t sect_offset, SectionRef S,
 
   // We did not find an external relocation entry so look up the ReferenceValue
   // as an address of a symbol and if found return that symbol's name.
-  if (ReferenceValue != UnknownAddress)
-    SymbolName = GuessSymbolName(ReferenceValue, info->AddrMap);
+  SymbolName = GuessSymbolName(ReferenceValue, info->AddrMap);
 
   return SymbolName;
 }
@@ -5640,7 +5617,7 @@ static const char *GuessLiteralPointer(uint64_t ReferenceValue,
     if (info->O->getAnyRelocationPCRel(RE)) {
       unsigned Type = info->O->getAnyRelocationType(RE);
       if (Type == MachO::X86_64_RELOC_SIGNED) {
-        Symbol.getAddress(ReferenceValue);
+        ReferenceValue = Symbol.getValue();
       }
     }
   }
@@ -6131,8 +6108,7 @@ static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF,
       SymbolRef::Type ST = Symbol.getType();
       if (ST == SymbolRef::ST_Function || ST == SymbolRef::ST_Data ||
           ST == SymbolRef::ST_Other) {
-        uint64_t Address;
-        Symbol.getAddress(Address);
+        uint64_t Address = Symbol.getValue();
         ErrorOr<StringRef> SymNameOrErr = Symbol.getName();
         if (std::error_code EC = SymNameOrErr.getError())
           report_fatal_error(EC.message());
@@ -6194,9 +6170,8 @@ static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF,
         continue;
 
       // Start at the address of the symbol relative to the section's address.
-      uint64_t Start = 0;
+      uint64_t Start = Symbols[SymIdx].getValue();
       uint64_t SectionAddress = Sections[SectIdx].getAddress();
-      Symbols[SymIdx].getAddress(Start);
       Start -= SectionAddress;
 
       // Stop disassembling either at the beginning of the next symbol or at
@@ -6209,7 +6184,7 @@ static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF,
         if (NextSymType == SymbolRef::ST_Function) {
           containsNextSym =
               Sections[SectIdx].containsSymbol(Symbols[NextSymIdx]);
-          Symbols[NextSymIdx].getAddress(NextSym);
+          NextSym = Symbols[NextSymIdx].getValue();
           NextSym -= SectionAddress;
           break;
         }
@@ -6815,8 +6790,7 @@ void llvm::printMachOUnwindInfo(const MachOObjectFile *Obj) {
     if (Section == Obj->section_end())
       continue;
 
-    uint64_t Addr;
-    SymRef.getAddress(Addr);
+    uint64_t Addr = SymRef.getValue();
     Symbols.insert(std::make_pair(Addr, SymRef));
   }
 
diff --git a/tools/llvm-objdump/llvm-objdump.cpp b/tools/llvm-objdump/llvm-objdump.cpp
index 7869818546098..275eb9c6a454e 100644
--- a/tools/llvm-objdump/llvm-objdump.cpp
+++ b/tools/llvm-objdump/llvm-objdump.cpp
@@ -96,6 +96,10 @@ llvm::LazyBind("lazy-bind", cl::desc("Display mach-o lazy binding info"));
 cl::opt<bool>
 llvm::WeakBind("weak-bind", cl::desc("Display mach-o weak binding info"));
 
+cl::opt<bool>
+llvm::RawClangAST("raw-clang-ast",
+    cl::desc("Dump the raw binary contents of the clang AST section"));
+
 static cl::opt<bool>
 MachOOpt("macho", cl::desc("Use MachO specific object file parser"));
 static cl::alias
@@ -212,9 +216,7 @@ static const Target *getTarget(const ObjectFile *Obj = nullptr) {
 }
 
 bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
-  uint64_t a_addr = a.getOffset();
-  uint64_t b_addr = b.getOffset();
-  return a_addr < b_addr;
+  return a.getOffset() < b.getOffset();
 }
 
 namespace {
@@ -455,13 +457,12 @@ static void printRelocationTargetName(const MachOObjectFile *O,
 
     for (const SymbolRef &Symbol : O->symbols()) {
       std::error_code ec;
-      uint64_t Addr;
-      ErrorOr<StringRef> Name = Symbol.getName();
-
-      if ((ec = Symbol.getAddress(Addr)))
+      ErrorOr<uint64_t> Addr = Symbol.getAddress();
+      if ((ec = Addr.getError()))
         report_fatal_error(ec.message());
-      if (Addr != Val)
+      if (*Addr != Val)
         continue;
+      ErrorOr<StringRef> Name = Symbol.getName();
       if (std::error_code EC = Name.getError())
         report_fatal_error(EC.message());
       fmt << *Name;
@@ -811,6 +812,30 @@ static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
       SectionRelocMap[*Sec2].push_back(Section);
   }
 
+  // Create a mapping from virtual address to symbol name.  This is used to
+  // pretty print the target of a call.
+  std::vector<std::pair<uint64_t, StringRef>> AllSymbols;
+  if (MIA) {
+    for (const SymbolRef &Symbol : Obj->symbols()) {
+      if (Symbol.getType() != SymbolRef::ST_Function)
+        continue;
+
+      ErrorOr<uint64_t> AddressOrErr = Symbol.getAddress();
+      if (error(AddressOrErr.getError()))
+        break;
+      uint64_t Address = *AddressOrErr;
+
+      ErrorOr<StringRef> Name = Symbol.getName();
+      if (error(Name.getError()))
+        break;
+      if (Name->empty())
+        continue;
+      AllSymbols.push_back(std::make_pair(Address, *Name));
+    }
+
+    array_pod_sort(AllSymbols.begin(), AllSymbols.end());
+  }
+
   for (const SectionRef &Section : Obj->sections()) {
     if (!Section.isText() || Section.isVirtual())
       continue;
@@ -824,11 +849,10 @@ static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
     std::vector<std::pair<uint64_t, StringRef>> Symbols;
     for (const SymbolRef &Symbol : Obj->symbols()) {
       if (Section.containsSymbol(Symbol)) {
-        uint64_t Address;
-        if (error(Symbol.getAddress(Address)))
+        ErrorOr<uint64_t> AddressOrErr = Symbol.getAddress();
+        if (error(AddressOrErr.getError()))
           break;
-        if (Address == UnknownAddress)
-          continue;
+        uint64_t Address = *AddressOrErr;
         Address -= SectionAddr;
         if (Address >= SectSize)
           continue;
@@ -916,6 +940,29 @@ static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
                         SectionAddr + Index, outs(), "", *STI);
           outs() << CommentStream.str();
           Comments.clear();
+          if (MIA && (MIA->isCall(Inst) || MIA->isUnconditionalBranch(Inst) ||
+                      MIA->isConditionalBranch(Inst))) {
+            uint64_t Target;
+            if (MIA->evaluateBranch(Inst, SectionAddr + Index, Size, Target)) {
+              auto TargetSym = std::upper_bound(
+                  AllSymbols.begin(), AllSymbols.end(), Target,
+                  [](uint64_t LHS, const std::pair<uint64_t, StringRef> &RHS) {
+                    return LHS < RHS.first;
+                  });
+              if (TargetSym != AllSymbols.begin())
+                --TargetSym;
+              else
+                TargetSym = AllSymbols.end();
+
+              if (TargetSym != AllSymbols.end()) {
+                outs() << " <" << TargetSym->second;
+                uint64_t Disp = Target - TargetSym->first;
+                if (Disp)
+                  outs() << '+' << utohexstr(Disp);
+                outs() << '>';
+              }
+            }
+          }
           outs() << "\n";
         } else {
           errs() << ToolName << ": warning: invalid instruction encoding\n";
@@ -1113,12 +1160,13 @@ void llvm::PrintSymbolTable(const ObjectFile *o) {
     return;
   }
   for (const SymbolRef &Symbol : o->symbols()) {
-    uint64_t Address;
+    ErrorOr<uint64_t> AddressOrError = Symbol.getAddress();
+    if (error(AddressOrError.getError()))
+      continue;
+    uint64_t Address = *AddressOrError;
     SymbolRef::Type Type = Symbol.getType();
     uint32_t Flags = Symbol.getFlags();
     section_iterator Section = o->section_end();
-    if (error(Symbol.getAddress(Address)))
-      continue;
     if (error(Symbol.getSection(Section)))
       continue;
     StringRef Name;
@@ -1137,11 +1185,6 @@ void llvm::PrintSymbolTable(const ObjectFile *o) {
     bool Common = Flags & SymbolRef::SF_Common;
     bool Hidden = Flags & SymbolRef::SF_Hidden;
 
-    if (Common)
-      Address = Symbol.getCommonSize();
-
-    if (Address == UnknownAddress)
-      Address = 0;
     char GlobLoc = ' ';
     if (Type != SymbolRef::ST_Unknown)
       GlobLoc = Global ? 'g' : 'l';
@@ -1269,6 +1312,43 @@ void llvm::printWeakBindTable(const ObjectFile *o) {
   }
 }
 
+/// Dump the raw contents of the __clangast section so the output can be piped
+/// into llvm-bcanalyzer.
+void llvm::printRawClangAST(const ObjectFile *Obj) {
+  if (outs().is_displayed()) {
+    errs() << "The -raw-clang-ast option will dump the raw binary contents of "
+              "the clang ast section.\n"
+              "Please redirect the output to a file or another program such as "
+              "llvm-bcanalyzer.\n";
+    return;
+  }
+
+  StringRef ClangASTSectionName("__clangast");
+  if (isa<COFFObjectFile>(Obj)) {
+    ClangASTSectionName = "clangast";
+  }
+
+  Optional<object::SectionRef> ClangASTSection;
+  for (auto Sec : Obj->sections()) {
+    StringRef Name;
+    Sec.getName(Name);
+    if (Name == ClangASTSectionName) {
+      ClangASTSection = Sec;
+      break;
+    }
+  }
+  if (!ClangASTSection)
+    return;
+
+  StringRef ClangASTContents;
+  if (error(ClangASTSection.getValue().getContents(ClangASTContents))) {
+    errs() << "Could not read the " << ClangASTSectionName << " section!\n";
+    return;
+  }
+
+  outs().write(ClangASTContents.data(), ClangASTContents.size());
+}
+
 static void printFaultMaps(const ObjectFile *Obj) {
   const char *FaultMapSectionName = nullptr;
 
@@ -1323,9 +1403,12 @@ static void printPrivateFileHeader(const ObjectFile *o) {
 }
 
 static void DumpObject(const ObjectFile *o) {
-  outs() << '\n';
-  outs() << o->getFileName()
-         << ":\tfile format " << o->getFileFormatName() << "\n\n";
+  // Avoid other output when using a raw option.
+  if (!RawClangAST) {
+    outs() << '\n';
+    outs() << o->getFileName()
+           << ":\tfile format " << o->getFileFormatName() << "\n\n";
+  }
 
   if (Disassemble)
     DisassembleObject(o, Relocations);
@@ -1351,6 +1434,8 @@ static void DumpObject(const ObjectFile *o) {
     printLazyBindTable(o);
   if (WeakBind)
     printWeakBindTable(o);
+  if (RawClangAST)
+    printRawClangAST(o);
   if (PrintFaultMaps)
     printFaultMaps(o);
 }
@@ -1441,6 +1526,7 @@ int main(int argc, char **argv) {
       && !Bind
       && !LazyBind
       && !WeakBind
+      && !RawClangAST
       && !(UniversalHeaders && MachOOpt)
       && !(ArchiveHeaders && MachOOpt)
       && !(IndirectSymbols && MachOOpt)
diff --git a/tools/llvm-objdump/llvm-objdump.h b/tools/llvm-objdump/llvm-objdump.h
index b4d34f4033bcf..eb10d8344f711 100644
--- a/tools/llvm-objdump/llvm-objdump.h
+++ b/tools/llvm-objdump/llvm-objdump.h
@@ -26,7 +26,6 @@ extern cl::opt<std::string> ArchName;
 extern cl::opt<std::string> MCPU;
 extern cl::list<std::string> MAttrs;
 extern cl::list<std::string> DumpSections;
-extern cl::opt<bool> Raw;
 extern cl::opt<bool> Disassemble;
 extern cl::opt<bool> NoShowRawInsn;
 extern cl::opt<bool> PrivateHeaders;
@@ -35,6 +34,7 @@ extern cl::opt<bool> Rebase;
 extern cl::opt<bool> Bind;
 extern cl::opt<bool> LazyBind;
 extern cl::opt<bool> WeakBind;
+extern cl::opt<bool> RawClangAST;
 extern cl::opt<bool> UniversalHeaders;
 extern cl::opt<bool> ArchiveHeaders;
 extern cl::opt<bool> IndirectSymbols;
@@ -72,6 +72,7 @@ void printRebaseTable(const object::ObjectFile *o);
 void printBindTable(const object::ObjectFile *o);
 void printLazyBindTable(const object::ObjectFile *o);
 void printWeakBindTable(const object::ObjectFile *o);
+void printRawClangAST(const object::ObjectFile *o);
 void PrintRelocations(const object::ObjectFile *o);
 void PrintSectionHeaders(const object::ObjectFile *o);
 void PrintSectionContents(const object::ObjectFile *o);
diff --git a/tools/llvm-readobj/ARMWinEHPrinter.cpp b/tools/llvm-readobj/ARMWinEHPrinter.cpp
index a1ea79f3688ea..bf5ff8e1d0310 100644
--- a/tools/llvm-readobj/ARMWinEHPrinter.cpp
+++ b/tools/llvm-readobj/ARMWinEHPrinter.cpp
@@ -201,10 +201,10 @@ ErrorOr<object::SymbolRef> Decoder::getSymbol(const COFFObjectFile &COFF,
     if (FunctionOnly && Symbol.getType() != SymbolRef::ST_Function)
       continue;
 
-    uint64_t Address;
-    if (std::error_code EC = Symbol.getAddress(Address))
+    ErrorOr<uint64_t> Address = Symbol.getAddress();
+    if (std::error_code EC = Address.getError())
       return EC;
-    if (Address == VA)
+    if (*Address == VA)
       return Symbol;
   }
   return readobj_error::unknown_symbol;
@@ -605,7 +605,10 @@ bool Decoder::dumpUnpackedEntry(const COFFObjectFile &COFF,
     if (std::error_code EC = FunctionNameOrErr.getError())
       report_fatal_error(EC.message());
     FunctionName = *FunctionNameOrErr;
-    Function->getAddress(FunctionAddress);
+    ErrorOr<uint64_t> FunctionAddressOrErr = Function->getAddress();
+    if (std::error_code EC = FunctionAddressOrErr.getError())
+      report_fatal_error(EC.message());
+    FunctionAddress = *FunctionAddressOrErr;
   } else {
     const pe32_header *PEHeader;
     if (COFF.getPE32Header(PEHeader))
@@ -620,8 +623,10 @@ bool Decoder::dumpUnpackedEntry(const COFFObjectFile &COFF,
     if (std::error_code EC = Name.getError())
       report_fatal_error(EC.message());
 
-    uint64_t Address;
-    XDataRecord->getAddress(Address);
+    ErrorOr<uint64_t> AddressOrErr = XDataRecord->getAddress();
+    if (std::error_code EC = AddressOrErr.getError())
+      report_fatal_error(EC.message());
+    uint64_t Address = *AddressOrErr;
 
     SW.printString("ExceptionRecord", formatSymbol(*Name, Address));
 
@@ -666,7 +671,8 @@ bool Decoder::dumpPackedEntry(const object::COFFObjectFile &COFF,
     if (std::error_code EC = FunctionNameOrErr.getError())
       report_fatal_error(EC.message());
     FunctionName = *FunctionNameOrErr;
-    Function->getAddress(FunctionAddress);
+    ErrorOr<uint64_t> FunctionAddressOrErr = Function->getAddress();
+    FunctionAddress = *FunctionAddressOrErr;
   } else {
     const pe32_header *PEHeader;
     if (COFF.getPE32Header(PEHeader))
diff --git a/tools/llvm-readobj/COFFDumper.cpp b/tools/llvm-readobj/COFFDumper.cpp
index f5effe2924419..cf897d7cb4840 100644
--- a/tools/llvm-readobj/COFFDumper.cpp
+++ b/tools/llvm-readobj/COFFDumper.cpp
@@ -48,7 +48,6 @@ public:
   COFFDumper(const llvm::object::COFFObjectFile *Obj, StreamWriter& Writer)
     : ObjDumper(Writer)
     , Obj(Obj) {
-    cacheRelocations();
   }
 
   void printFileHeaders() override;
@@ -92,6 +91,7 @@ private:
   typedef DenseMap<const coff_section*, std::vector<RelocationRef> > RelocMapTy;
 
   const llvm::object::COFFObjectFile *Obj;
+  bool RelocCached = false;
   RelocMapTy RelocMap;
   StringRef CVFileIndexToStringOffsetTable;
   StringRef CVStringTable;
@@ -119,6 +119,7 @@ std::error_code createCOFFDumper(const object::ObjectFile *Obj,
 // symbol used for the relocation at the offset.
 std::error_code COFFDumper::resolveSymbol(const coff_section *Section,
                                           uint64_t Offset, SymbolRef &Sym) {
+  cacheRelocations();
   const auto &Relocations = RelocMap[Section];
   for (const auto &Relocation : Relocations) {
     uint64_t RelocationOffset = Relocation.getOffset();
@@ -339,6 +340,10 @@ static std::error_code getSymbolAuxData(const COFFObjectFile *Obj,
 }
 
 void COFFDumper::cacheRelocations() {
+  if (RelocCached)
+    return;
+  RelocCached = true;
+
   for (const SectionRef &S : Obj->sections()) {
     const coff_section *Section = Obj->getCOFFSection(S);
 
@@ -580,7 +585,11 @@ void COFFDumper::printCodeViewDebugInfo(const SectionRef &Section) {
     W.printString("FunctionName", Name);
 
     DataExtractor DE(FunctionLineTables[Name], true, 4);
-    uint32_t Offset = 8;  // Skip relocations.
+    uint32_t Offset = 6;  // Skip relocations.
+    uint16_t Flags = DE.getU16(&Offset);
+    W.printHex("Flags", Flags);
+    bool HasColumnInformation =
+        Flags & COFF::DEBUG_LINE_TABLES_HAVE_COLUMN_RECORDS;
     uint32_t FunctionSize = DE.getU32(&Offset);
     W.printHex("CodeSize", FunctionSize);
     while (DE.isValidOffset(Offset)) {
@@ -588,9 +597,12 @@ void COFFDumper::printCodeViewDebugInfo(const SectionRef &Section) {
       // in the line table.  The filename string is accessed using double
       // indirection to the string table subsection using the index subsection.
       uint32_t OffsetInIndex = DE.getU32(&Offset),
-               SegmentLength   = DE.getU32(&Offset),
+               SegmentLength = DE.getU32(&Offset),
                FullSegmentSize = DE.getU32(&Offset);
-      if (FullSegmentSize != 12 + 8 * SegmentLength) {
+
+      if (FullSegmentSize !=
+          12 + 8 * SegmentLength +
+              (HasColumnInformation ? 4 * SegmentLength : 0)) {
         error(object_error::parse_failed);
         return;
       }
@@ -631,6 +643,15 @@ void COFFDumper::printCodeViewDebugInfo(const SectionRef &Section) {
         format("+0x%X", PC).snprint(Buffer, 32);
         W.printNumber(Buffer, LineNumber);
       }
+      if (HasColumnInformation) {
+        for (unsigned J = 0; J != SegmentLength && DE.isValidOffset(Offset);
+             ++J) {
+          uint16_t ColStart = DE.getU16(&Offset);
+          W.printNumber("ColStart", ColStart);
+          uint16_t ColEnd = DE.getU16(&Offset);
+          W.printNumber("ColEnd", ColEnd);
+        }
+      }
     }
   }
 }
diff --git a/tools/llvm-readobj/ELFDumper.cpp b/tools/llvm-readobj/ELFDumper.cpp
index a4b25efeb9ba1..1cdf5529c0809 100644
--- a/tools/llvm-readobj/ELFDumper.cpp
+++ b/tools/llvm-readobj/ELFDumper.cpp
@@ -56,6 +56,7 @@ public:
   void printDynamicTable() override;
   void printNeededLibraries() override;
   void printProgramHeaders() override;
+  void printHashTable() override;
 
   void printAttributes() override;
   void printMipsPLTGOT() override;
@@ -1119,6 +1120,18 @@ void ELFDumper<ELFT>::printProgramHeaders() {
   }
 }
 
+template <typename ELFT>
+void ELFDumper<ELFT>::printHashTable() {
+  DictScope D(W, "HashTable");
+  auto HT = Obj->getHashTable();
+  if (!HT)
+    return;
+  W.printNumber("Num Buckets", HT->nbucket);
+  W.printNumber("Num Chains", HT->nchain);
+  W.printList("Buckets", HT->buckets());
+  W.printList("Chains", HT->chains());
+}
+
 template <class ELFT>
 void ELFDumper<ELFT>::printAttributes() {
   W.startLine() << "Attributes not implemented.\n";
@@ -1162,9 +1175,10 @@ public:
   typedef typename ObjectFile::Elf_Shdr Elf_Shdr;
   typedef typename ObjectFile::Elf_Sym Elf_Sym;
 
-  MipsGOTParser(const ObjectFile *Obj, StreamWriter &W) : Obj(Obj), W(W) {}
+  MipsGOTParser(const ObjectFile *Obj, StreamWriter &W);
 
-  void parseGOT(const Elf_Shdr &GOTShdr);
+  void parseGOT();
+  void parsePLT();
 
 private:
   typedef typename ObjectFile::Elf_Addr GOTEntry;
@@ -1173,35 +1187,79 @@ private:
 
   const ObjectFile *Obj;
   StreamWriter &W;
+  llvm::Optional<uint64_t> DtPltGot;
+  llvm::Optional<uint64_t> DtLocalGotNum;
+  llvm::Optional<uint64_t> DtGotSym;
+  llvm::Optional<uint64_t> DtMipsPltGot;
+  llvm::Optional<uint64_t> DtJmpRel;
 
   std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const;
   GOTIter makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum);
 
-  bool getGOTTags(uint64_t &LocalGotNum, uint64_t &GotSym);
   void printGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It);
   void printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It,
                            const Elf_Sym *Sym, bool IsDynamic);
+  void printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt, GOTIter It,
+                     StringRef Purpose);
+  void printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt, GOTIter It,
+                     const Elf_Sym *Sym);
 };
 }
 
 template <class ELFT>
-void MipsGOTParser<ELFT>::parseGOT(const Elf_Shdr &GOTShdr) {
+MipsGOTParser<ELFT>::MipsGOTParser(const ObjectFile *Obj, StreamWriter &W)
+    : Obj(Obj), W(W) {
+  for (const auto &Entry : Obj->dynamic_table()) {
+    switch (Entry.getTag()) {
+    case ELF::DT_PLTGOT:
+      DtPltGot = Entry.getVal();
+      break;
+    case ELF::DT_MIPS_LOCAL_GOTNO:
+      DtLocalGotNum = Entry.getVal();
+      break;
+    case ELF::DT_MIPS_GOTSYM:
+      DtGotSym = Entry.getVal();
+      break;
+    case ELF::DT_MIPS_PLTGOT:
+      DtMipsPltGot = Entry.getVal();
+      break;
+    case ELF::DT_JMPREL:
+      DtJmpRel = Entry.getVal();
+      break;
+    }
+  }
+}
+
+template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() {
   // See "Global Offset Table" in Chapter 5 in the following document
   // for detailed GOT description.
   // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
+  if (!DtPltGot) {
+    W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
+    return;
+  }
+  if (!DtLocalGotNum) {
+    W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
+    return;
+  }
+  if (!DtGotSym) {
+    W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
+    return;
+  }
 
-  ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(&GOTShdr);
-  if (!GOT) {
-    W.startLine() << "The .got section is empty.\n";
+  const Elf_Shdr *GOTShdr = findSectionByAddress(Obj, *DtPltGot);
+  if (!GOTShdr) {
+    W.startLine() << "There is no .got section in the file.\n";
     return;
   }
 
-  uint64_t DtLocalGotNum;
-  uint64_t DtGotSym;
-  if (!getGOTTags(DtLocalGotNum, DtGotSym))
+  ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(GOTShdr);
+  if (!GOT) {
+    W.startLine() << "The .got section is empty.\n";
     return;
+  }
 
-  if (DtLocalGotNum > getGOTTotal(*GOT)) {
+  if (*DtLocalGotNum > getGOTTotal(*GOT)) {
     W.startLine() << "MIPS_LOCAL_GOTNO exceeds a number of GOT entries.\n";
     return;
   }
@@ -1210,37 +1268,37 @@ void MipsGOTParser<ELFT>::parseGOT(const Elf_Shdr &GOTShdr) {
   const Elf_Sym *DynSymEnd = Obj->dynamic_symbol_end();
   std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd));
 
-  if (DtGotSym > DynSymTotal) {
+  if (*DtGotSym > DynSymTotal) {
     W.startLine() << "MIPS_GOTSYM exceeds a number of dynamic symbols.\n";
     return;
   }
 
-  std::size_t GlobalGotNum = DynSymTotal - DtGotSym;
+  std::size_t GlobalGotNum = DynSymTotal - *DtGotSym;
 
-  if (DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) {
+  if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) {
     W.startLine() << "Number of global GOT entries exceeds the size of GOT.\n";
     return;
   }
 
   GOTIter GotBegin = makeGOTIter(*GOT, 0);
-  GOTIter GotLocalEnd = makeGOTIter(*GOT, DtLocalGotNum);
+  GOTIter GotLocalEnd = makeGOTIter(*GOT, *DtLocalGotNum);
   GOTIter It = GotBegin;
 
   DictScope GS(W, "Primary GOT");
 
-  W.printHex("Canonical gp value", GOTShdr.sh_addr + 0x7ff0);
+  W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0);
   {
     ListScope RS(W, "Reserved entries");
 
     {
       DictScope D(W, "Entry");
-      printGotEntry(GOTShdr.sh_addr, GotBegin, It++);
+      printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
       W.printString("Purpose", StringRef("Lazy resolver"));
     }
 
     if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) {
       DictScope D(W, "Entry");
-      printGotEntry(GOTShdr.sh_addr, GotBegin, It++);
+      printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
       W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
     }
   }
@@ -1248,24 +1306,88 @@ void MipsGOTParser<ELFT>::parseGOT(const Elf_Shdr &GOTShdr) {
     ListScope LS(W, "Local entries");
     for (; It != GotLocalEnd; ++It) {
       DictScope D(W, "Entry");
-      printGotEntry(GOTShdr.sh_addr, GotBegin, It);
+      printGotEntry(GOTShdr->sh_addr, GotBegin, It);
     }
   }
   {
     ListScope GS(W, "Global entries");
 
-    GOTIter GotGlobalEnd = makeGOTIter(*GOT, DtLocalGotNum + GlobalGotNum);
-    const Elf_Sym *GotDynSym = DynSymBegin + DtGotSym;
+    GOTIter GotGlobalEnd = makeGOTIter(*GOT, *DtLocalGotNum + GlobalGotNum);
+    const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym;
     for (; It != GotGlobalEnd; ++It) {
       DictScope D(W, "Entry");
-      printGlobalGotEntry(GOTShdr.sh_addr, GotBegin, It, GotDynSym++, true);
+      printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, true);
     }
   }
 
-  std::size_t SpecGotNum = getGOTTotal(*GOT) - DtLocalGotNum - GlobalGotNum;
+  std::size_t SpecGotNum = getGOTTotal(*GOT) - *DtLocalGotNum - GlobalGotNum;
   W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum));
 }
 
+template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() {
+  if (!DtMipsPltGot) {
+    W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n";
+    return;
+  }
+  if (!DtJmpRel) {
+    W.startLine() << "Cannot find JMPREL dynamic table tag.\n";
+    return;
+  }
+
+  const Elf_Shdr *PLTShdr = findSectionByAddress(Obj, *DtMipsPltGot);
+  if (!PLTShdr) {
+    W.startLine() << "There is no .got.plt section in the file.\n";
+    return;
+  }
+  ErrorOr<ArrayRef<uint8_t>> PLT = Obj->getSectionContents(PLTShdr);
+  if (!PLT) {
+    W.startLine() << "The .got.plt section is empty.\n";
+    return;
+  }
+
+  const Elf_Shdr *PLTRelShdr = findSectionByAddress(Obj, *DtJmpRel);
+  if (!PLTShdr) {
+    W.startLine() << "There is no .rel.plt section in the file.\n";
+    return;
+  }
+
+  GOTIter PLTBegin = makeGOTIter(*PLT, 0);
+  GOTIter PLTEnd = makeGOTIter(*PLT, getGOTTotal(*PLT));
+  GOTIter It = PLTBegin;
+
+  DictScope GS(W, "PLT GOT");
+  {
+    ListScope RS(W, "Reserved entries");
+    printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver");
+    if (It != PLTEnd)
+      printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer");
+  }
+  {
+    ListScope GS(W, "Entries");
+
+    switch (PLTRelShdr->sh_type) {
+    case ELF::SHT_REL:
+      for (typename ObjectFile::Elf_Rel_Iter RI = Obj->rel_begin(PLTRelShdr),
+                                             RE = Obj->rel_end(PLTRelShdr);
+           RI != RE && It != PLTEnd; ++RI, ++It) {
+        const Elf_Sym *Sym =
+            Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
+        printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, Sym);
+      }
+      break;
+    case ELF::SHT_RELA:
+      for (typename ObjectFile::Elf_Rela_Iter RI = Obj->rela_begin(PLTRelShdr),
+                                              RE = Obj->rela_end(PLTRelShdr);
+           RI != RE && It != PLTEnd; ++RI, ++It) {
+        const Elf_Sym *Sym =
+            Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
+        printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, Sym);
+      }
+      break;
+    }
+  }
+}
+
 template <class ELFT>
 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const {
   return GOT.size() / sizeof(GOTEntry);
@@ -1279,36 +1401,6 @@ MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) {
 }
 
 template <class ELFT>
-bool MipsGOTParser<ELFT>::getGOTTags(uint64_t &LocalGotNum, uint64_t &GotSym) {
-  bool FoundLocalGotNum = false;
-  bool FoundGotSym = false;
-  for (const auto &Entry : Obj->dynamic_table()) {
-    switch (Entry.getTag()) {
-    case ELF::DT_MIPS_LOCAL_GOTNO:
-      LocalGotNum = Entry.getVal();
-      FoundLocalGotNum = true;
-      break;
-    case ELF::DT_MIPS_GOTSYM:
-      GotSym = Entry.getVal();
-      FoundGotSym = true;
-      break;
-    }
-  }
-
-  if (!FoundLocalGotNum) {
-    W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
-    return false;
-  }
-
-  if (!FoundGotSym) {
-    W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
-    return false;
-  }
-
-  return true;
-}
-
-template <class ELFT>
 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, GOTIter BeginIt,
                                         GOTIter It) {
   int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
@@ -1335,32 +1427,44 @@ void MipsGOTParser<ELFT>::printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt,
   W.printNumber("Name", FullSymbolName, Sym->st_name);
 }
 
-template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
-  if (Obj->getHeader()->e_machine != EM_MIPS) {
-    W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n";
-    return;
-  }
+template <class ELFT>
+void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt,
+                                        GOTIter It, StringRef Purpose) {
+  DictScope D(W, "Entry");
+  int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
+  W.printHex("Address", PLTAddr + Offset);
+  W.printHex("Initial", *It);
+  W.printString("Purpose", Purpose);
+}
 
-  llvm::Optional<uint64_t> DtPltGot;
-  for (const auto &Entry : Obj->dynamic_table()) {
-    if (Entry.getTag() == ELF::DT_PLTGOT) {
-      DtPltGot = Entry.getVal();
-      break;
-    }
-  }
+template <class ELFT>
+void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt,
+                                        GOTIter It, const Elf_Sym *Sym) {
+  DictScope D(W, "Entry");
+  int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
+  W.printHex("Address", PLTAddr + Offset);
+  W.printHex("Initial", *It);
+  W.printHex("Value", Sym->st_value);
+  W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
 
-  if (!DtPltGot) {
-    W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
-    return;
-  }
+  unsigned SectionIndex = 0;
+  StringRef SectionName;
+  getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
+  W.printHex("Section", SectionName, SectionIndex);
 
-  const Elf_Shdr *GotShdr = findSectionByAddress(Obj, *DtPltGot);
-  if (!GotShdr) {
-    W.startLine() << "There is no .got section in the file.\n";
+  std::string FullSymbolName = getFullSymbolName(*Obj, Sym, true);
+  W.printNumber("Name", FullSymbolName, Sym->st_name);
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
+  if (Obj->getHeader()->e_machine != EM_MIPS) {
+    W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n";
     return;
   }
 
-  MipsGOTParser<ELFT>(Obj, W).parseGOT(*GotShdr);
+  MipsGOTParser<ELFT> GOTParser(Obj, W);
+  GOTParser.parseGOT();
+  GOTParser.parsePLT();
 }
 
 static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
diff --git a/tools/llvm-readobj/ObjDumper.h b/tools/llvm-readobj/ObjDumper.h
index 27e15b256cc57..5ecf0ec3d6fa0 100644
--- a/tools/llvm-readobj/ObjDumper.h
+++ b/tools/llvm-readobj/ObjDumper.h
@@ -37,6 +37,7 @@ public:
   virtual void printDynamicTable() { }
   virtual void printNeededLibraries() { }
   virtual void printProgramHeaders() { }
+  virtual void printHashTable() { }
 
   // Only implemented for ARM ELF at this time.
   virtual void printAttributes() { }
diff --git a/tools/llvm-readobj/StreamWriter.h b/tools/llvm-readobj/StreamWriter.h
index 245588ba06006..f3cc57ef940e7 100644
--- a/tools/llvm-readobj/StreamWriter.h
+++ b/tools/llvm-readobj/StreamWriter.h
@@ -181,8 +181,8 @@ public:
     startLine() << Label << ": " << (Value ? "Yes" : "No") << '\n';
   }
 
-  template <typename T_>
-  void printList(StringRef Label, const SmallVectorImpl<T_> &List) {
+  template <typename T>
+  void printList(StringRef Label, const T &List) {
     startLine() << Label << ": [";
     bool Comma = false;
     for (const auto &Item : List) {
diff --git a/tools/llvm-readobj/Win64EHDumper.cpp b/tools/llvm-readobj/Win64EHDumper.cpp
index 5a8af4135bd75..f57eea20e2d9c 100644
--- a/tools/llvm-readobj/Win64EHDumper.cpp
+++ b/tools/llvm-readobj/Win64EHDumper.cpp
@@ -144,8 +144,10 @@ static std::error_code resolveRelocation(const Dumper::Context &Ctx,
           Ctx.ResolveSymbol(Section, Offset, Symbol, Ctx.UserData))
     return EC;
 
-  if (std::error_code EC = Symbol.getAddress(ResolvedAddress))
+  ErrorOr<uint64_t> ResolvedAddressOrErr = Symbol.getAddress();
+  if (std::error_code EC = ResolvedAddressOrErr.getError())
     return EC;
+  ResolvedAddress = *ResolvedAddressOrErr;
 
   section_iterator SI = Ctx.COFF.section_begin();
   if (std::error_code EC = Symbol.getSection(SI))
diff --git a/tools/llvm-readobj/llvm-readobj.cpp b/tools/llvm-readobj/llvm-readobj.cpp
index c5bccf9796094..12afacb0a858e 100644
--- a/tools/llvm-readobj/llvm-readobj.cpp
+++ b/tools/llvm-readobj/llvm-readobj.cpp
@@ -127,6 +127,10 @@ namespace opts {
   cl::opt<bool> ProgramHeaders("program-headers",
     cl::desc("Display ELF program headers"));
 
+  // -hash-table
+  cl::opt<bool> HashTable("hash-table",
+    cl::desc("Display ELF hash table"));
+
   // -expand-relocs
   cl::opt<bool> ExpandRelocs("expand-relocs",
     cl::desc("Expand each shown relocation to multiple lines"));
@@ -199,9 +203,7 @@ bool error(std::error_code EC) {
 }
 
 bool relocAddressLess(RelocationRef a, RelocationRef b) {
-  uint64_t a_addr = a.getOffset();
-  uint64_t b_addr = b.getOffset();
-  return a_addr < b_addr;
+  return a.getOffset() < b.getOffset();
 }
 
 } // namespace llvm
@@ -302,6 +304,8 @@ static void dumpObject(const ObjectFile *Obj) {
     Dumper->printNeededLibraries();
   if (opts::ProgramHeaders)
     Dumper->printProgramHeaders();
+  if (opts::HashTable)
+    Dumper->printHashTable();
   if (Obj->getArch() == llvm::Triple::arm && Obj->isELF())
     if (opts::ARMAttributes)
       Dumper->printAttributes();
diff --git a/tools/llvm-rtdyld/llvm-rtdyld.cpp b/tools/llvm-rtdyld/llvm-rtdyld.cpp
index 98c6f5c4399cd..86f66f89b1595 100644
--- a/tools/llvm-rtdyld/llvm-rtdyld.cpp
+++ b/tools/llvm-rtdyld/llvm-rtdyld.cpp
@@ -115,8 +115,17 @@ TargetSectionSep("target-section-sep",
 
 static cl::list<std::string>
 SpecificSectionMappings("map-section",
-                        cl::desc("Map a section to a specific address."),
-                        cl::ZeroOrMore);
+                        cl::desc("For -verify only: Map a section to a "
+                                 "specific address."),
+                        cl::ZeroOrMore,
+                        cl::Hidden);
+
+static cl::list<std::string>
+DummySymbolMappings("dummy-extern",
+                    cl::desc("For -verify only: Inject a symbol into the extern "
+                             "symbol table."),
+                    cl::ZeroOrMore,
+                    cl::Hidden);
 
 /* *** */
 
@@ -147,10 +156,25 @@ public:
   // relocations) will get to the data cache but not to the instruction cache.
   virtual void invalidateInstructionCache();
 
+  void addDummySymbol(const std::string &Name, uint64_t Addr) {
+    DummyExterns[Name] = Addr;
+  }
+
+  RuntimeDyld::SymbolInfo findSymbol(const std::string &Name) override {
+    auto I = DummyExterns.find(Name);
+
+    if (I != DummyExterns.end())
+      return RuntimeDyld::SymbolInfo(I->second, JITSymbolFlags::Exported);
+
+    return RTDyldMemoryManager::findSymbol(Name);
+  }
+
   void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr,
                         size_t Size) override {}
   void deregisterEHFrames(uint8_t *Addr, uint64_t LoadAddr,
                           size_t Size) override {}
+private:
+  std::map<std::string, uint64_t> DummyExterns;
 };
 
 uint8_t *TrivialMemoryManager::allocateCodeSection(uintptr_t Size,
@@ -269,9 +293,10 @@ static int printLineInfoForInput(bool LoadObjects, bool UseDebugObj) {
         ErrorOr<StringRef> Name = Sym.getName();
         if (!Name)
           continue;
-        uint64_t Addr;
-        if (Sym.getAddress(Addr))
+        ErrorOr<uint64_t> AddrOrErr = Sym.getAddress();
+        if (!AddrOrErr)
           continue;
+        uint64_t Addr = *AddrOrErr;
 
         uint64_t Size = P.second;
         // If we're not using the debug object, compute the address of the
@@ -400,7 +425,7 @@ applySpecificSectionMappings(RuntimeDyldChecker &Checker) {
   for (StringRef Mapping : SpecificSectionMappings) {
 
     size_t EqualsIdx = Mapping.find_first_of("=");
-    StringRef SectionIDStr = Mapping.substr(0, EqualsIdx);
+    std::string SectionIDStr = Mapping.substr(0, EqualsIdx);
     size_t ComaIdx = Mapping.find_first_of(",");
 
     if (ComaIdx == StringRef::npos) {
@@ -409,8 +434,8 @@ applySpecificSectionMappings(RuntimeDyldChecker &Checker) {
       exit(1);
     }
 
-    StringRef FileName = SectionIDStr.substr(0, ComaIdx);
-    StringRef SectionName = SectionIDStr.substr(ComaIdx + 1);
+    std::string FileName = SectionIDStr.substr(0, ComaIdx);
+    std::string SectionName = SectionIDStr.substr(ComaIdx + 1);
 
     uint64_t OldAddrInt;
     std::string ErrorMsg;
@@ -424,11 +449,11 @@ applySpecificSectionMappings(RuntimeDyldChecker &Checker) {
 
     void* OldAddr = reinterpret_cast<void*>(static_cast<uintptr_t>(OldAddrInt));
 
-    StringRef NewAddrStr = Mapping.substr(EqualsIdx + 1);
+    std::string NewAddrStr = Mapping.substr(EqualsIdx + 1);
     uint64_t NewAddr;
 
-    if (NewAddrStr.getAsInteger(0, NewAddr)) {
-      errs() << "Invalid section address in mapping: " << Mapping << "\n";
+    if (StringRef(NewAddrStr).getAsInteger(0, NewAddr)) {
+      errs() << "Invalid section address in mapping '" << Mapping << "'.\n";
       exit(1);
     }
 
@@ -450,9 +475,9 @@ applySpecificSectionMappings(RuntimeDyldChecker &Checker) {
 //                            Defaults to zero. Set to something big
 //                            (e.g. 1 << 32) to stress-test stubs, GOTs, etc.
 //
-static void remapSections(const llvm::Triple &TargetTriple,
-                          const TrivialMemoryManager &MemMgr,
-                          RuntimeDyldChecker &Checker) {
+static void remapSectionsAndSymbols(const llvm::Triple &TargetTriple,
+                                    TrivialMemoryManager &MemMgr,
+                                    RuntimeDyldChecker &Checker) {
 
   // Set up a work list (section addr/size pairs).
   typedef std::list<std::pair<void*, uint64_t>> WorklistT;
@@ -515,6 +540,27 @@ static void remapSections(const llvm::Triple &TargetTriple,
     Checker.getRTDyld().mapSectionAddress(CurEntry.first, NextSectionAddr);
   }
 
+  // Add dummy symbols to the memory manager.
+  for (const auto &Mapping : DummySymbolMappings) {
+    size_t EqualsIdx = Mapping.find_first_of("=");
+
+    if (EqualsIdx == StringRef::npos) {
+      errs() << "Invalid dummy symbol specification '" << Mapping
+             << "'. Should be '<symbol name>=<addr>'\n";
+      exit(1);
+    }
+
+    std::string Symbol = Mapping.substr(0, EqualsIdx);
+    std::string AddrStr = Mapping.substr(EqualsIdx + 1);
+
+    uint64_t Addr;
+    if (StringRef(AddrStr).getAsInteger(0, Addr)) {
+      errs() << "Invalid symbol mapping '" << Mapping << "'.\n";
+      exit(1);
+    }
+
+    MemMgr.addDummySymbol(Symbol, Addr);
+  }
 }
 
 // Load and link the objects specified on the command line, but do not execute
@@ -603,8 +649,9 @@ static int linkAndVerify() {
     }
   }
 
-  // Re-map the section addresses into the phony target address space.
-  remapSections(TheTriple, MemMgr, Checker);
+  // Re-map the section addresses into the phony target address space and add
+  // dummy symbols.
+  remapSectionsAndSymbols(TheTriple, MemMgr, Checker);
 
   // Resolve all the relocations we can.
   Dyld.resolveRelocations();
diff --git a/tools/llvm-shlib/CMakeLists.txt b/tools/llvm-shlib/CMakeLists.txt
index bc1b658ba7264..54d71d3f63200 100644
--- a/tools/llvm-shlib/CMakeLists.txt
+++ b/tools/llvm-shlib/CMakeLists.txt
@@ -15,6 +15,8 @@ if(NOT DEFINED LLVM_DYLIB_COMPONENTS)
     BitWriter
     CodeGen
     Core
+    DebugInfoDWARF
+    DebugInfoPDB
     ExecutionEngine
     IPA
     IPO
diff --git a/tools/llvm-stress/llvm-stress.cpp b/tools/llvm-stress/llvm-stress.cpp
index 727d03f9d6ea4..6a1a248a05725 100644
--- a/tools/llvm-stress/llvm-stress.cpp
+++ b/tools/llvm-stress/llvm-stress.cpp
@@ -31,7 +31,8 @@
 #include <set>
 #include <sstream>
 #include <vector>
-using namespace llvm;
+
+namespace llvm {
 
 static cl::opt<unsigned> SeedCL("seed",
   cl::desc("Seed used for randomness"), cl::init(0));
@@ -42,16 +43,39 @@ static cl::opt<std::string>
 OutputFilename("o", cl::desc("Override output filename"),
                cl::value_desc("filename"));
 
-static cl::opt<bool> GenHalfFloat("generate-half-float",
-  cl::desc("Generate half-length floating-point values"), cl::init(false));
-static cl::opt<bool> GenX86FP80("generate-x86-fp80",
-  cl::desc("Generate 80-bit X86 floating-point values"), cl::init(false));
-static cl::opt<bool> GenFP128("generate-fp128",
-  cl::desc("Generate 128-bit floating-point values"), cl::init(false));
-static cl::opt<bool> GenPPCFP128("generate-ppc-fp128",
-  cl::desc("Generate 128-bit PPC floating-point values"), cl::init(false));
-static cl::opt<bool> GenX86MMX("generate-x86-mmx",
-  cl::desc("Generate X86 MMX floating-point values"), cl::init(false));
+namespace cl {
+template <> class parser<Type*> final : public basic_parser<Type*> {
+public:
+  parser(Option &O) : basic_parser(O) {}
+
+  // Parse options as IR types. Return true on error.
+  bool parse(Option &O, StringRef, StringRef Arg, Type *&Value) {
+    auto &Context = getGlobalContext();
+    if      (Arg == "half")      Value = Type::getHalfTy(Context);
+    else if (Arg == "fp128")     Value = Type::getFP128Ty(Context);
+    else if (Arg == "x86_fp80")  Value = Type::getX86_FP80Ty(Context);
+    else if (Arg == "ppc_fp128") Value = Type::getPPC_FP128Ty(Context);
+    else if (Arg == "x86_mmx")   Value = Type::getX86_MMXTy(Context);
+    else if (Arg.startswith("i")) {
+      unsigned N = 0;
+      Arg.drop_front().getAsInteger(10, N);
+      if (N > 0)
+        Value = Type::getIntNTy(Context, N);
+    }
+
+    if (!Value)
+      return O.error("Invalid IR scalar type: '" + Arg + "'!");
+    return false;
+  }
+
+  const char *getValueName() const override { return "IR scalar type"; }
+};
+}
+
+
+static cl::list<Type*> AdditionalScalarTypes("types", cl::CommaSeparated,
+  cl::desc("Additional IR scalar types "
+           "(always includes i1, i8, i16, i32, i64, float and double)"));
 
 namespace {
 /// A utility class to provide a pseudo-random number generator which is
@@ -243,35 +267,22 @@ protected:
 
   /// Pick a random scalar type.
   Type *pickScalarType() {
-    Type *t = nullptr;
-    do {
-      switch (Ran->Rand() % 30) {
-      case 0: t = Type::getInt1Ty(Context); break;
-      case 1: t = Type::getInt8Ty(Context); break;
-      case 2: t = Type::getInt16Ty(Context); break;
-      case 3: case 4:
-      case 5: t = Type::getFloatTy(Context); break;
-      case 6: case 7:
-      case 8: t = Type::getDoubleTy(Context); break;
-      case 9: case 10:
-      case 11: t = Type::getInt32Ty(Context); break;
-      case 12: case 13:
-      case 14: t = Type::getInt64Ty(Context); break;
-      case 15: case 16:
-      case 17: if (GenHalfFloat) t = Type::getHalfTy(Context); break;
-      case 18: case 19:
-      case 20: if (GenX86FP80) t = Type::getX86_FP80Ty(Context); break;
-      case 21: case 22:
-      case 23: if (GenFP128) t = Type::getFP128Ty(Context); break;
-      case 24: case 25:
-      case 26: if (GenPPCFP128) t = Type::getPPC_FP128Ty(Context); break;
-      case 27: case 28:
-      case 29: if (GenX86MMX) t = Type::getX86_MMXTy(Context); break;
-      default: llvm_unreachable("Invalid scalar value");
-      }
-    } while (t == nullptr);
+    static std::vector<Type*> ScalarTypes;
+    if (ScalarTypes.empty()) {
+      ScalarTypes.assign({
+        Type::getInt1Ty(Context),
+        Type::getInt8Ty(Context),
+        Type::getInt16Ty(Context),
+        Type::getInt32Ty(Context),
+        Type::getInt64Ty(Context),
+        Type::getFloatTy(Context),
+        Type::getDoubleTy(Context)
+      });
+      ScalarTypes.insert(ScalarTypes.end(),
+        AdditionalScalarTypes.begin(), AdditionalScalarTypes.end());
+    }
 
-    return t;
+    return ScalarTypes[Ran->Rand() % ScalarTypes.size()];
   }
 
   /// Basic block to populate
@@ -665,9 +676,13 @@ static void IntroduceControlFlow(Function *F, Random &R) {
   }
 }
 
+}
+
 int main(int argc, char **argv) {
+  using namespace llvm;
+
   // Init LLVM, call llvm_shutdown() on exit, parse args, etc.
-  llvm::PrettyStackTraceProgram X(argc, argv);
+  PrettyStackTraceProgram X(argc, argv);
   cl::ParseCommandLineOptions(argc, argv, "llvm codegen stress-tester\n");
   llvm_shutdown_obj Y;
 
diff --git a/tools/llvm-symbolizer/LLVMSymbolize.cpp b/tools/llvm-symbolizer/LLVMSymbolize.cpp
index ec3fe4868db33..c57c219b11d23 100644
--- a/tools/llvm-symbolizer/LLVMSymbolize.cpp
+++ b/tools/llvm-symbolizer/LLVMSymbolize.cpp
@@ -84,10 +84,10 @@ void ModuleInfo::addSymbol(const SymbolRef &Symbol, uint64_t SymbolSize,
   SymbolRef::Type SymbolType = Symbol.getType();
   if (SymbolType != SymbolRef::ST_Function && SymbolType != SymbolRef::ST_Data)
     return;
-  uint64_t SymbolAddress;
-  if (error(Symbol.getAddress(SymbolAddress)) ||
-      SymbolAddress == UnknownAddress)
+  ErrorOr<uint64_t> SymbolAddressOrErr = Symbol.getAddress();
+  if (error(SymbolAddressOrErr.getError()))
     return;
+  uint64_t SymbolAddress = *SymbolAddressOrErr;
   if (OpdExtractor) {
     // For big-endian PowerPC64 ELF, symbols in the .opd section refer to
     // function descriptors. The first word of the descriptor is a pointer to
diff --git a/tools/obj2yaml/elf2yaml.cpp b/tools/obj2yaml/elf2yaml.cpp
index 9afcedef63982..f117a10d38222 100644
--- a/tools/obj2yaml/elf2yaml.cpp
+++ b/tools/obj2yaml/elf2yaml.cpp
@@ -40,6 +40,7 @@ class ELFDumper {
   ErrorOr<ELFYAML::RelocationSection *> dumpRelaSection(const Elf_Shdr *Shdr);
   ErrorOr<ELFYAML::RawContentSection *>
   dumpContentSection(const Elf_Shdr *Shdr);
+  ErrorOr<ELFYAML::NoBitsSection *> dumpNoBitsSection(const Elf_Shdr *Shdr);
   ErrorOr<ELFYAML::Group *> dumpGroup(const Elf_Shdr *Shdr);
   ErrorOr<ELFYAML::MipsABIFlags *> dumpMipsABIFlags(const Elf_Shdr *Shdr);
 
@@ -104,6 +105,13 @@ ErrorOr<ELFYAML::Object *> ELFDumper<ELFT>::dump() {
       Y->Sections.push_back(std::unique_ptr<ELFYAML::Section>(G.get()));
       break;
     }
+    case ELF::SHT_NOBITS: {
+      ErrorOr<ELFYAML::NoBitsSection *> S = dumpNoBitsSection(&Sec);
+      if (std::error_code EC = S.getError())
+        return EC;
+      Y->Sections.push_back(std::unique_ptr<ELFYAML::Section>(S.get()));
+      break;
+    }
     default: {
       ErrorOr<ELFYAML::RawContentSection *> S = dumpContentSection(&Sec);
       if (std::error_code EC = S.getError())
@@ -305,6 +313,18 @@ ELFDumper<ELFT>::dumpContentSection(const Elf_Shdr *Shdr) {
 }
 
 template <class ELFT>
+ErrorOr<ELFYAML::NoBitsSection *>
+ELFDumper<ELFT>::dumpNoBitsSection(const Elf_Shdr *Shdr) {
+  auto S = make_unique<ELFYAML::NoBitsSection>();
+
+  if (std::error_code EC = dumpCommonSection(Shdr, *S))
+    return EC;
+  S->Size = Shdr->sh_size;
+
+  return S.release();
+}
+
+template <class ELFT>
 ErrorOr<ELFYAML::Group *> ELFDumper<ELFT>::dumpGroup(const Elf_Shdr *Shdr) {
   auto S = make_unique<ELFYAML::Group>();
 
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 55426e7b27435..0db60d1444099 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -324,6 +324,7 @@ int main(int argc, char **argv) {
   initializeRewriteSymbolsPass(Registry);
   initializeWinEHPreparePass(Registry);
   initializeDwarfEHPreparePass(Registry);
+  initializeSjLjEHPreparePass(Registry);
 
 #ifdef LINK_POLLY_INTO_TOOLS
   polly::initializePollyPasses(Registry);
diff --git a/tools/yaml2obj/yaml2elf.cpp b/tools/yaml2obj/yaml2elf.cpp
index 772b5b918ecab..a247f48c053dc 100644
--- a/tools/yaml2obj/yaml2elf.cpp
+++ b/tools/yaml2obj/yaml2elf.cpp
@@ -35,6 +35,8 @@ class ContiguousBlobAccumulator {
 
   /// \returns The new offset.
   uint64_t padToAlignment(unsigned Align) {
+    if (Align == 0)
+      Align = 1;
     uint64_t CurrentOffset = InitialOffset + OS.tell();
     uint64_t AlignedOffset = RoundUpToAlignment(CurrentOffset, Align);
     for (; CurrentOffset != AlignedOffset; ++CurrentOffset)
@@ -46,7 +48,7 @@ public:
   ContiguousBlobAccumulator(uint64_t InitialOffset_)
       : InitialOffset(InitialOffset_), Buf(), OS(Buf) {}
   template <class Integer>
-  raw_ostream &getOSAndAlignedOffset(Integer &Offset, unsigned Align = 16) {
+  raw_ostream &getOSAndAlignedOffset(Integer &Offset, unsigned Align) {
     Offset = padToAlignment(Align);
     return OS;
   }
@@ -241,6 +243,12 @@ bool ELFState<ELFT>::initSectionHeaders(std::vector<Elf_Shdr> &SHeaders,
     } else if (auto S = dyn_cast<ELFYAML::MipsABIFlags>(Sec.get())) {
       if (!writeSectionContent(SHeader, *S, CBA))
         return false;
+    } else if (auto S = dyn_cast<ELFYAML::NoBitsSection>(Sec.get())) {
+      SHeader.sh_entsize = 0;
+      SHeader.sh_size = S->Size;
+      // SHT_NOBITS section does not have content
+      // so just to setup the section offset.
+      CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
     } else
       llvm_unreachable("Unknown section type");
 
@@ -259,6 +267,7 @@ void ELFState<ELFT>::initSymtabSectionHeader(Elf_Shdr &SHeader,
   // One greater than symbol table index of the last local symbol.
   SHeader.sh_info = Doc.Symbols.Local.size() + 1;
   SHeader.sh_entsize = sizeof(Elf_Sym);
+  SHeader.sh_addralign = 8;
 
   std::vector<Elf_Sym> Syms;
   {
@@ -281,8 +290,9 @@ void ELFState<ELFT>::initSymtabSectionHeader(Elf_Shdr &SHeader,
   addSymbols(Doc.Symbols.Global, Syms, ELF::STB_GLOBAL);
   addSymbols(Doc.Symbols.Weak, Syms, ELF::STB_WEAK);
 
-  writeArrayData(CBA.getOSAndAlignedOffset(SHeader.sh_offset),
-                 makeArrayRef(Syms));
+  writeArrayData(
+      CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign),
+      makeArrayRef(Syms));
   SHeader.sh_size = arrayDataSize(makeArrayRef(Syms));
 }
 
@@ -293,7 +303,8 @@ void ELFState<ELFT>::initStrtabSectionHeader(Elf_Shdr &SHeader, StringRef Name,
   zero(SHeader);
   SHeader.sh_name = DotShStrtab.getOffset(Name);
   SHeader.sh_type = ELF::SHT_STRTAB;
-  CBA.getOSAndAlignedOffset(SHeader.sh_offset) << STB.data();
+  CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign)
+      << STB.data();
   SHeader.sh_size = STB.data().size();
   SHeader.sh_addralign = 1;
 }
@@ -331,7 +342,8 @@ ELFState<ELFT>::writeSectionContent(Elf_Shdr &SHeader,
                                     ContiguousBlobAccumulator &CBA) {
   assert(Section.Size >= Section.Content.binary_size() &&
          "Section size and section content are inconsistent");
-  raw_ostream &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+  raw_ostream &OS =
+      CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
   Section.Content.writeAsBinary(OS);
   for (auto i = Section.Content.binary_size(); i < Section.Size; ++i)
     OS.write(0);
@@ -358,7 +370,7 @@ ELFState<ELFT>::writeSectionContent(Elf_Shdr &SHeader,
   SHeader.sh_entsize = IsRela ? sizeof(Elf_Rela) : sizeof(Elf_Rel);
   SHeader.sh_size = SHeader.sh_entsize * Section.Relocations.size();
 
-  auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+  auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
 
   for (const auto &Rel : Section.Relocations) {
     unsigned SymIdx = 0;
@@ -396,7 +408,7 @@ bool ELFState<ELFT>::writeSectionContent(Elf_Shdr &SHeader,
   SHeader.sh_entsize = sizeof(Elf_Word);
   SHeader.sh_size = SHeader.sh_entsize * Section.Members.size();
 
-  auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+  auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
 
   for (auto member : Section.Members) {
     Elf_Word SIdx;
@@ -427,7 +439,7 @@ bool ELFState<ELFT>::writeSectionContent(Elf_Shdr &SHeader,
   SHeader.sh_entsize = sizeof(Flags);
   SHeader.sh_size = SHeader.sh_entsize;
 
-  auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+  auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
   Flags.version = Section.Version;
   Flags.isa_level = Section.ISALevel;
   Flags.isa_rev = Section.ISARevision;