Vendor import of llvm trunk r126079:

http://llvm.org/svn/llvm-project/llvm/trunk@126079

62 files changed, 2346 insertions, 709 deletions

diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 7ed10e9..2f37911 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -1,6 +1,14 @@
-# NOTE: The tools are organized into five groups of four consisting of one
-# large and three small executables. This is done to minimize memory load
-# in parallel builds.  Please retain this ordering.
+# NOTE: The tools are organized into groups of four consisting of one large and
+# three small executables. This is done to minimize memory load in parallel
+# builds.  Please retain this ordering.
+
+# If polly exists and is not disabled compile it and add it to the LLVM tools.
+option(LLVM_BUILD_POLLY "Compile polly" ON)
+if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
+  if (LLVM_BUILD_POLLY)
+    add_subdirectory( ${CMAKE_CURRENT_SOURCE_DIR}/polly)
+  endif (LLVM_BUILD_POLLY)
+endif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
 
 if( NOT WIN32 OR MSYS OR CYGWIN )
   # It is useful to build llvm-config before the other tools, so we
@@ -28,6 +36,8 @@ add_subdirectory(lli)
 
 add_subdirectory(llvm-extract)
 add_subdirectory(llvm-diff)
+add_subdirectory(macho-dump)
+add_subdirectory(llvm-objdump)
 
 add_subdirectory(bugpoint)
 add_subdirectory(bugpoint-passes)
diff --git a/tools/Makefile b/tools/Makefile
index aa07a2b..7310247 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -12,6 +12,10 @@ LEVEL := ..
 # Build clang if present.
 OPTIONAL_PARALLEL_DIRS := clang
 
+# Build LLDB if present. Note LLDB must be built last as it depends on the
+# wider LLVM infrastructure (including Clang). 
+OPTIONAL_DIRS := lldb
+
 # NOTE: The tools are organized into five groups of four consisting of one
 # large and three small executables. This is done to minimize memory load
 # in parallel builds.  Please retain this ordering.
@@ -21,12 +25,13 @@ PARALLEL_DIRS := opt llvm-as llvm-dis \
                  llvm-ld llvm-prof llvm-link \
                  lli llvm-extract llvm-mc \
                  bugpoint llvm-bcanalyzer llvm-stub \
-                 llvmc llvm-diff
+                 llvmc llvm-diff macho-dump llvm-objdump
 
 # Let users override the set of tools to build from the command line.
 ifdef ONLY_TOOLS
   OPTIONAL_PARALLEL_DIRS :=
-  PARALLEL_DIRS := $(ONLY_TOOLS)
+  OPTIONAL_DIRS := $(findstring lldb,$(ONLY_TOOLS))
+  PARALLEL_DIRS := $(filter-out lldb,$(ONLY_TOOLS))
 endif
 
 include $(LEVEL)/Makefile.config
@@ -34,26 +39,37 @@ include $(LEVEL)/Makefile.config
 
 # These libraries build as dynamic libraries (.dylib /.so), they can only be
 # built if ENABLE_PIC is set.
+ifndef ONLY_TOOLS
 ifeq ($(ENABLE_PIC),1)
-  # No support for dynamic libraries on windows targets.
-  ifneq ($(TARGET_OS), $(filter $(TARGET_OS), Cygwin MingW))
-    # gold only builds if binutils is around.  It requires "lto" to build before
-    # it so it is added to DIRS.
-    ifdef BINUTILS_INCDIR
-      DIRS += lto gold
-    else
-      PARALLEL_DIRS += lto
-    endif
+  # gold only builds if binutils is around.  It requires "lto" to build before
+  # it so it is added to DIRS.
+  ifdef BINUTILS_INCDIR
+    DIRS += lto gold
+  else
+    PARALLEL_DIRS += lto
+  endif
 
-    PARALLEL_DIRS += bugpoint-passes
+  PARALLEL_DIRS += bugpoint-passes
 
-    # The edis library is only supported if ARM and/or X86 are enabled, and if
-    # LLVM is being built PIC on platforms that support dylibs.
-    ifneq ($(DISABLE_EDIS),1)
+  # The edis library is only supported if ARM and/or X86 are enabled, and if
+  # LLVM is being built PIC on platforms that support dylibs.
+  ifneq ($(DISABLE_EDIS),1)
     ifneq ($(filter $(TARGETS_TO_BUILD), X86 ARM),)
       PARALLEL_DIRS += edis
     endif
-    endif
+  endif
+endif
+
+ifdef LLVM_HAS_POLLY
+  PARALLEL_DIRS += polly
+endif
+endif
+
+# On Win32, loadable modules can be built with ENABLE_SHARED.
+ifneq ($(ENABLE_SHARED),1)
+  ifneq (,$(filter $(HOST_OS), Cygwin MingW))
+    PARALLEL_DIRS := $(filter-out bugpoint-passes, \
+                        $(PARALLEL_DIRS))
   endif
 endif
 
diff --git a/tools/bugpoint-passes/CMakeLists.txt b/tools/bugpoint-passes/CMakeLists.txt
index 50109a5..b2f1bb5 100644
--- a/tools/bugpoint-passes/CMakeLists.txt
+++ b/tools/bugpoint-passes/CMakeLists.txt
@@ -1,3 +1,5 @@
 add_llvm_loadable_module( BugpointPasses
   TestPasses.cpp
   )
+
+add_dependencies(BugpointPasses bugpoint)
diff --git a/tools/bugpoint/BugDriver.cpp b/tools/bugpoint/BugDriver.cpp
index 6966671..1cbf632 100644
--- a/tools/bugpoint/BugDriver.cpp
+++ b/tools/bugpoint/BugDriver.cpp
@@ -23,7 +23,7 @@
 #include "llvm/Support/FileUtilities.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Host.h"
+#include "llvm/Support/Host.h"
 #include <memory>
 using namespace llvm;
 
diff --git a/tools/bugpoint/BugDriver.h b/tools/bugpoint/BugDriver.h
index e48806a..cc78489 100644
--- a/tools/bugpoint/BugDriver.h
+++ b/tools/bugpoint/BugDriver.h
@@ -17,6 +17,7 @@
 #define BUGDRIVER_H
 
 #include "llvm/ADT/ValueMap.h"
+#include "llvm/Transforms/Utils/ValueMapper.h"
 #include <vector>
 #include <string>
 
@@ -322,7 +323,7 @@ void DeleteFunctionBody(Function *F);
 /// module, split the functions OUT of the specified module, and place them in
 /// the new module.
 Module *SplitFunctionsOutOfModule(Module *M, const std::vector<Function*> &F,
-                                  ValueMap<const Value*, Value*> &VMap);
+                                  ValueToValueMapTy &VMap);
 
 } // End llvm namespace
 
diff --git a/tools/bugpoint/CrashDebugger.cpp b/tools/bugpoint/CrashDebugger.cpp
index 57dc1c8..f19ef62 100644
--- a/tools/bugpoint/CrashDebugger.cpp
+++ b/tools/bugpoint/CrashDebugger.cpp
@@ -130,7 +130,7 @@ bool
 ReduceCrashingGlobalVariables::TestGlobalVariables(
                               std::vector<GlobalVariable*> &GVs) {
   // Clone the program to try hacking it apart...
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *M = CloneModule(BD.getProgram(), VMap);
 
   // Convert list to set for fast lookup...
@@ -204,7 +204,7 @@ bool ReduceCrashingFunctions::TestFuncs(std::vector<Function*> &Funcs) {
     return false;
 
   // Clone the program to try hacking it apart...
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *M = CloneModule(BD.getProgram(), VMap);
 
   // Convert list to set for fast lookup...
@@ -271,7 +271,7 @@ namespace {
 
 bool ReduceCrashingBlocks::TestBlocks(std::vector<const BasicBlock*> &BBs) {
   // Clone the program to try hacking it apart...
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *M = CloneModule(BD.getProgram(), VMap);
 
   // Convert list to set for fast lookup...
@@ -381,7 +381,7 @@ namespace {
 bool ReduceCrashingInstructions::TestInsts(std::vector<const Instruction*>
                                            &Insts) {
   // Clone the program to try hacking it apart...
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *M = CloneModule(BD.getProgram(), VMap);
 
   // Convert list to set for fast lookup...
diff --git a/tools/bugpoint/ExecutionDriver.cpp b/tools/bugpoint/ExecutionDriver.cpp
index 7312484..f1601cd 100644
--- a/tools/bugpoint/ExecutionDriver.cpp
+++ b/tools/bugpoint/ExecutionDriver.cpp
@@ -28,7 +28,8 @@ namespace {
   // for miscompilation.
   //
   enum OutputType {
-    AutoPick, RunLLI, RunJIT, RunLLC, RunLLCIA, RunCBE, CBE_bug, LLC_Safe,Custom
+    AutoPick, RunLLI, RunJIT, RunLLC, RunLLCIA, RunCBE, CBE_bug, LLC_Safe,
+    CompileCustom, Custom
   };
 
   cl::opt<double>
@@ -50,6 +51,9 @@ namespace {
                             clEnumValN(RunCBE, "run-cbe", "Compile with CBE"),
                             clEnumValN(CBE_bug,"cbe-bug", "Find CBE bugs"),
                             clEnumValN(LLC_Safe, "llc-safe", "Use LLC for all"),
+                            clEnumValN(CompileCustom, "compile-custom",
+                            "Use -compile-command to define a command to "
+                            "compile the bitcode. Useful to avoid linking."),
                             clEnumValN(Custom, "run-custom",
                             "Use -exec-command to define a command to execute "
                             "the bitcode. Useful for cross-compilation."),
@@ -87,10 +91,15 @@ namespace {
                          "into executing programs"));
 
   cl::list<std::string>
-  AdditionalLinkerArgs("Xlinker", 
+  AdditionalLinkerArgs("Xlinker",
       cl::desc("Additional arguments to pass to the linker"));
 
   cl::opt<std::string>
+  CustomCompileCommand("compile-command", cl::init("llc"),
+      cl::desc("Command to compile the bitcode (use with -compile-custom) "
+               "(default: llc)"));
+
+  cl::opt<std::string>
   CustomExecCommand("exec-command", cl::init("simulate"),
       cl::desc("Command to execute the bitcode (use with -run-custom) "
                "(default: simulate)"));
@@ -119,7 +128,7 @@ namespace {
                cl::ZeroOrMore, cl::PositionalEatsArgs);
 
   cl::opt<std::string>
-  GCCBinary("gcc", cl::init("gcc"), 
+  GCCBinary("gcc", cl::init("gcc"),
               cl::desc("The gcc binary to use. (default 'gcc')"));
 
   cl::list<std::string>
@@ -157,7 +166,7 @@ bool BugDriver::initializeExecutionEnvironment() {
     if (!Interpreter) {
       InterpreterSel = RunLLC;
       Interpreter = AbstractInterpreter::createLLC(getToolName(), Message,
-                                                   GCCBinary, &ToolArgv, 
+                                                   GCCBinary, &ToolArgv,
                                                    &GCCToolArgv);
     }
     if (!Interpreter) {
@@ -178,7 +187,7 @@ bool BugDriver::initializeExecutionEnvironment() {
   case RunLLCIA:
   case LLC_Safe:
     Interpreter = AbstractInterpreter::createLLC(getToolName(), Message,
-                                                 GCCBinary, &ToolArgv, 
+                                                 GCCBinary, &ToolArgv,
                                                  &GCCToolArgv,
                                                  InterpreterSel == RunLLCIA);
     break;
@@ -189,11 +198,16 @@ bool BugDriver::initializeExecutionEnvironment() {
   case RunCBE:
   case CBE_bug:
     Interpreter = AbstractInterpreter::createCBE(getToolName(), Message,
-                                                 GCCBinary, &ToolArgv, 
+                                                 GCCBinary, &ToolArgv,
                                                  &GCCToolArgv);
     break;
+  case CompileCustom:
+    Interpreter =
+      AbstractInterpreter::createCustomCompiler(Message, CustomCompileCommand);
+    break;
   case Custom:
-    Interpreter = AbstractInterpreter::createCustom(Message, CustomExecCommand);
+    Interpreter =
+      AbstractInterpreter::createCustomExecutor(Message, CustomExecCommand);
     break;
   default:
     Message = "Sorry, this back-end is not supported by bugpoint right now!\n";
@@ -216,7 +230,7 @@ bool BugDriver::initializeExecutionEnvironment() {
       SafeInterpreterSel = RunLLC;
       SafeToolArgs.push_back("--relocation-model=pic");
       SafeInterpreter = AbstractInterpreter::createLLC(Path.c_str(), Message,
-                                                       GCCBinary, 
+                                                       GCCBinary,
                                                        &SafeToolArgs,
                                                        &GCCToolArgv);
     }
@@ -227,7 +241,7 @@ bool BugDriver::initializeExecutionEnvironment() {
       SafeInterpreterSel = RunLLC;
       SafeToolArgs.push_back("--relocation-model=pic");
       SafeInterpreter = AbstractInterpreter::createLLC(Path.c_str(), Message,
-                                                       GCCBinary, 
+                                                       GCCBinary,
                                                        &SafeToolArgs,
                                                        &GCCToolArgv);
     }
@@ -249,7 +263,7 @@ bool BugDriver::initializeExecutionEnvironment() {
       SafeInterpreterSel = RunLLC;
       SafeToolArgs.push_back("--relocation-model=pic");
       SafeInterpreter = AbstractInterpreter::createLLC(Path.c_str(), Message,
-                                                       GCCBinary, 
+                                                       GCCBinary,
                                                        &SafeToolArgs,
                                                        &GCCToolArgv);
     }
@@ -272,8 +286,8 @@ bool BugDriver::initializeExecutionEnvironment() {
                                                      &GCCToolArgv);
     break;
   case Custom:
-    SafeInterpreter = AbstractInterpreter::createCustom(Message,
-                                                        CustomExecCommand);
+    SafeInterpreter =
+      AbstractInterpreter::createCustomExecutor(Message, CustomExecCommand);
     break;
   default:
     Message = "Sorry, this back-end is not supported by bugpoint as the "
@@ -281,7 +295,7 @@ bool BugDriver::initializeExecutionEnvironment() {
     break;
   }
   if (!SafeInterpreter) { outs() << Message << "\nExiting.\n"; exit(1); }
-  
+
   gcc = GCC::create(Message, GCCBinary, &GCCToolArgv);
   if (!gcc) { outs() << Message << "\nExiting.\n"; exit(1); }
 
@@ -298,7 +312,7 @@ void BugDriver::compileProgram(Module *M, std::string *Error) const {
   sys::Path BitcodeFile (OutputPrefix + "-test-program.bc");
   std::string ErrMsg;
   if (BitcodeFile.makeUnique(true, &ErrMsg)) {
-    errs() << ToolName << ": Error making unique filename: " << ErrMsg 
+    errs() << ToolName << ": Error making unique filename: " << ErrMsg
            << "\n";
     exit(1);
   }
@@ -432,7 +446,7 @@ std::string BugDriver::compileSharedObject(const std::string &BitcodeFile,
 }
 
 /// createReferenceFile - calls compileProgram and then records the output
-/// into ReferenceOutputFile. Returns true if reference file created, false 
+/// into ReferenceOutputFile. Returns true if reference file created, false
 /// otherwise. Note: initializeExecutionEnvironment should be called BEFORE
 /// this function.
 ///
diff --git a/tools/bugpoint/ExtractFunction.cpp b/tools/bugpoint/ExtractFunction.cpp
index 524f130..593765c 100644
--- a/tools/bugpoint/ExtractFunction.cpp
+++ b/tools/bugpoint/ExtractFunction.cpp
@@ -29,9 +29,9 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/FileUtilities.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Signals.h"
 #include <set>
 using namespace llvm;
 
@@ -193,7 +193,7 @@ static Constant *GetTorInit(std::vector<std::pair<Function*, int> > &TorList) {
 /// static ctors/dtors, we need to add an llvm.global_[cd]tors global to M2, and
 /// prune appropriate entries out of M1s list.
 static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2,
-                                ValueMap<const Value*, Value*> &VMap) {
+                                ValueToValueMapTy &VMap) {
   GlobalVariable *GV = M1->getNamedGlobal(GlobalName);
   if (!GV || GV->isDeclaration() || GV->hasLocalLinkage() ||
       !GV->use_empty()) return;
@@ -256,7 +256,7 @@ static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2,
 Module *
 llvm::SplitFunctionsOutOfModule(Module *M,
                                 const std::vector<Function*> &F,
-                                ValueMap<const Value*, Value*> &VMap) {
+                                ValueToValueMapTy &VMap) {
   // Make sure functions & globals are all external so that linkage
   // between the two modules will work.
   for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
@@ -268,7 +268,7 @@ llvm::SplitFunctionsOutOfModule(Module *M,
     I->setLinkage(GlobalValue::ExternalLinkage);
   }
 
-  ValueMap<const Value*, Value*> NewVMap;
+  ValueToValueMapTy NewVMap;
   Module *New = CloneModule(M, NewVMap);
 
   // Make sure global initializers exist only in the safe module (CBE->.so)
diff --git a/tools/bugpoint/Miscompilation.cpp b/tools/bugpoint/Miscompilation.cpp
index 3f2b696..3a5f143 100644
--- a/tools/bugpoint/Miscompilation.cpp
+++ b/tools/bugpoint/Miscompilation.cpp
@@ -261,7 +261,7 @@ bool ReduceMiscompilingFunctions::TestFuncs(const std::vector<Function*> &Funcs,
   //   a function, we want to continue with the original function. Otherwise
   //   we can conclude that a function triggers the bug when in fact one
   //   needs a larger set of original functions to do so.
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *Clone = CloneModule(BD.getProgram(), VMap);
   Module *Orig = BD.swapProgramIn(Clone);
 
@@ -310,7 +310,7 @@ static bool ExtractLoops(BugDriver &BD,
   while (1) {
     if (BugpointIsInterrupted) return MadeChange;
     
-    ValueMap<const Value*, Value*> VMap;
+    ValueToValueMapTy VMap;
     Module *ToNotOptimize = CloneModule(BD.getProgram(), VMap);
     Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize,
                                                    MiscompiledFunctions,
@@ -476,7 +476,7 @@ bool ReduceMiscompiledBlocks::TestFuncs(const std::vector<BasicBlock*> &BBs,
   outs() << '\n';
 
   // Split the module into the two halves of the program we want.
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *Clone = CloneModule(BD.getProgram(), VMap);
   Module *Orig = BD.swapProgramIn(Clone);
   std::vector<Function*> FuncsOnClone;
@@ -551,7 +551,7 @@ static bool ExtractBlocks(BugDriver &BD,
       return false;
   }
 
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *ProgClone = CloneModule(BD.getProgram(), VMap);
   Module *ToExtract = SplitFunctionsOutOfModule(ProgClone,
                                                 MiscompiledFunctions,
@@ -738,7 +738,7 @@ void BugDriver::debugMiscompilation(std::string *Error) {
 
   // Output a bunch of bitcode files for the user...
   outs() << "Outputting reduced bitcode files which expose the problem:\n";
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *ToNotOptimize = CloneModule(getProgram(), VMap);
   Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize,
                                                  MiscompiledFunctions,
@@ -1011,7 +1011,7 @@ bool BugDriver::debugCodeGenerator(std::string *Error) {
     return true;
 
   // Split the module into the two halves of the program we want.
-  ValueMap<const Value*, Value*> VMap;
+  ValueToValueMapTy VMap;
   Module *ToNotCodeGen = CloneModule(getProgram(), VMap);
   Module *ToCodeGen = SplitFunctionsOutOfModule(ToNotCodeGen, Funcs, VMap);
 
diff --git a/tools/bugpoint/OptimizerDriver.cpp b/tools/bugpoint/OptimizerDriver.cpp
index 3600ca6..2471cc1 100644
--- a/tools/bugpoint/OptimizerDriver.cpp
+++ b/tools/bugpoint/OptimizerDriver.cpp
@@ -15,10 +15,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-// Note: as a short term hack, the old Unix-specific code and platform-
-// independent code co-exist via conditional compilation until it is verified
-// that the new code works correctly on Unix.
-
 #include "BugDriver.h"
 #include "llvm/Module.h"
 #include "llvm/PassManager.h"
@@ -29,9 +25,9 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/SystemUtils.h"
 #include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Program.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Program.h"
 
 #define DONT_GET_PLUGIN_LOADER_OPTION
 #include "llvm/Support/PluginLoader.h"
@@ -130,12 +126,12 @@ bool BugDriver::runPasses(Module *Program,
            << ErrMsg << "\n";
     return(1);
   }
-  
+
   std::string ErrInfo;
   tool_output_file InFile(inputFilename.c_str(), ErrInfo,
                           raw_fd_ostream::F_Binary);
-  
-  
+
+
   if (!ErrInfo.empty()) {
     errs() << "Error opening bitcode file: " << inputFilename.str() << "\n";
     return 1;
@@ -147,11 +143,19 @@ bool BugDriver::runPasses(Module *Program,
     InFile.os().clear_error();
     return 1;
   }
+
+  sys::Path tool = PrependMainExecutablePath("opt", getToolName(),
+                                             (void*)"opt");
+  if (tool.empty()) {
+    errs() << "Cannot find `opt' in executable directory!\n";
+    return 1;
+  }
+
+  // Ok, everything that could go wrong before running opt is done.
   InFile.keep();
 
   // setup the child process' arguments
   SmallVector<const char*, 8> Args;
-  sys::Path tool = FindExecutable("opt", getToolName(), (void*)"opt");
   std::string Opt = tool.str();
   if (UseValgrind) {
     Args.push_back("valgrind");
@@ -192,7 +196,7 @@ bool BugDriver::runPasses(Module *Program,
     prog = sys::Program::FindProgramByName("valgrind");
   else
     prog = tool;
-  
+
   // Redirect stdout and stderr to nowhere if SilencePasses is given
   sys::Path Nowhere;
   const sys::Path *Redirects[3] = {0, &Nowhere, &Nowhere};
diff --git a/tools/bugpoint/ToolRunner.cpp b/tools/bugpoint/ToolRunner.cpp
index 36dbe14..37cc902 100644
--- a/tools/bugpoint/ToolRunner.cpp
+++ b/tools/bugpoint/ToolRunner.cpp
@@ -13,7 +13,7 @@
 
 #define DEBUG_TYPE "toolrunner"
 #include "ToolRunner.h"
-#include "llvm/System/Program.h"
+#include "llvm/Support/Program.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/FileUtilities.h"
@@ -59,7 +59,8 @@ static int RunProgramWithTimeout(const sys::Path &ProgramPath,
                                  const sys::Path &StdOutFile,
                                  const sys::Path &StdErrFile,
                                  unsigned NumSeconds = 0,
-                                 unsigned MemoryLimit = 0) {
+                                 unsigned MemoryLimit = 0,
+                                 std::string *ErrMsg = 0) {
   const sys::Path* redirects[3];
   redirects[0] = &StdInFile;
   redirects[1] = &StdOutFile;
@@ -76,7 +77,7 @@ static int RunProgramWithTimeout(const sys::Path &ProgramPath,
 
   return
     sys::Program::ExecuteAndWait(ProgramPath, Args, 0, redirects,
-                                 NumSeconds, MemoryLimit);
+                                 NumSeconds, MemoryLimit, ErrMsg);
 }
 
 /// RunProgramRemotelyWithTimeout - This function runs the given program
@@ -141,7 +142,7 @@ static std::string ProcessFailure(sys::Path ProgPath, const char** Args,
   for (const char **Arg = Args; *Arg; ++Arg)
     OS << " " << *Arg;
   OS << "\n";
-  
+
   // Rerun the compiler, capturing any error messages to print them.
   sys::Path ErrorFilename("bugpoint.program_error_messages");
   std::string ErrMsg;
@@ -206,7 +207,8 @@ int LLI::ExecuteProgram(const std::string &Bitcode,
   LLIArgs.push_back(LLIPath.c_str());
   LLIArgs.push_back("-force-interpreter=true");
 
-  for (std::vector<std::string>::const_iterator i = SharedLibs.begin(), e = SharedLibs.end(); i != e; ++i) {
+  for (std::vector<std::string>::const_iterator i = SharedLibs.begin(),
+         e = SharedLibs.end(); i != e; ++i) {
     LLIArgs.push_back("-load");
     LLIArgs.push_back((*i).c_str());
   }
@@ -229,7 +231,7 @@ int LLI::ExecuteProgram(const std::string &Bitcode,
         );
   return RunProgramWithTimeout(sys::Path(LLIPath), &LLIArgs[0],
       sys::Path(InputFile), sys::Path(OutputFile), sys::Path(OutputFile),
-      Timeout, MemoryLimit);
+      Timeout, MemoryLimit, Error);
 }
 
 // LLI create method - Try to find the LLI executable
@@ -237,21 +239,82 @@ AbstractInterpreter *AbstractInterpreter::createLLI(const char *Argv0,
                                                     std::string &Message,
                                      const std::vector<std::string> *ToolArgs) {
   std::string LLIPath =
-    FindExecutable("lli", Argv0, (void *)(intptr_t)&createLLI).str();
+    PrependMainExecutablePath("lli", Argv0, (void *)(intptr_t)&createLLI).str();
   if (!LLIPath.empty()) {
     Message = "Found lli: " + LLIPath + "\n";
     return new LLI(LLIPath, ToolArgs);
   }
 
-  Message = "Cannot find `lli' in executable directory or PATH!\n";
+  Message = "Cannot find `lli' in executable directory!\n";
   return 0;
 }
 
 //===---------------------------------------------------------------------===//
+// Custom compiler command implementation of AbstractIntepreter interface
+//
+// Allows using a custom command for compiling the bitcode, thus allows, for
+// example, to compile a bitcode fragment without linking or executing, then
+// using a custom wrapper script to check for compiler errors.
+namespace {
+  class CustomCompiler : public AbstractInterpreter {
+    std::string CompilerCommand;
+    std::vector<std::string> CompilerArgs;
+  public:
+    CustomCompiler(
+      const std::string &CompilerCmd, std::vector<std::string> CompArgs) :
+      CompilerCommand(CompilerCmd), CompilerArgs(CompArgs) {}
+
+    virtual void compileProgram(const std::string &Bitcode,
+                                std::string *Error,
+                                unsigned Timeout = 0,
+                                unsigned MemoryLimit = 0);
+
+    virtual int ExecuteProgram(const std::string &Bitcode,
+                               const std::vector<std::string> &Args,
+                               const std::string &InputFile,
+                               const std::string &OutputFile,
+                               std::string *Error,
+                               const std::vector<std::string> &GCCArgs =
+                               std::vector<std::string>(),
+                               const std::vector<std::string> &SharedLibs =
+                               std::vector<std::string>(),
+                               unsigned Timeout = 0,
+                               unsigned MemoryLimit = 0) {
+      *Error = "Execution not supported with -compile-custom";
+      return -1;
+    }
+  };
+}
+
+void CustomCompiler::compileProgram(const std::string &Bitcode,
+                                    std::string *Error,
+                                    unsigned Timeout,
+                                    unsigned MemoryLimit) {
+
+  std::vector<const char*> ProgramArgs;
+  ProgramArgs.push_back(CompilerCommand.c_str());
+
+  for (std::size_t i = 0; i < CompilerArgs.size(); ++i)
+    ProgramArgs.push_back(CompilerArgs.at(i).c_str());
+  ProgramArgs.push_back(Bitcode.c_str());
+  ProgramArgs.push_back(0);
+
+  // Add optional parameters to the running program from Argv
+  for (unsigned i = 0, e = CompilerArgs.size(); i != e; ++i)
+    ProgramArgs.push_back(CompilerArgs[i].c_str());
+
+  if (RunProgramWithTimeout( sys::Path(CompilerCommand), &ProgramArgs[0],
+                             sys::Path(), sys::Path(), sys::Path(),
+                             Timeout, MemoryLimit, Error))
+    *Error = ProcessFailure(sys::Path(CompilerCommand), &ProgramArgs[0],
+                           Timeout, MemoryLimit);
+}
+
+//===---------------------------------------------------------------------===//
 // Custom execution command implementation of AbstractIntepreter interface
 //
 // Allows using a custom command for executing the bitcode, thus allows,
-// for example, to invoke a cross compiler for code generation followed by 
+// for example, to invoke a cross compiler for code generation followed by
 // a simulator that executes the generated binary.
 namespace {
   class CustomExecutor : public AbstractInterpreter {
@@ -299,55 +362,78 @@ int CustomExecutor::ExecuteProgram(const std::string &Bitcode,
 
   return RunProgramWithTimeout(
     sys::Path(ExecutionCommand),
-    &ProgramArgs[0], sys::Path(InputFile), sys::Path(OutputFile), 
-    sys::Path(OutputFile), Timeout, MemoryLimit);
+    &ProgramArgs[0], sys::Path(InputFile), sys::Path(OutputFile),
+    sys::Path(OutputFile), Timeout, MemoryLimit, Error);
 }
 
-// Custom execution environment create method, takes the execution command
-// as arguments
-AbstractInterpreter *AbstractInterpreter::createCustom(
-                    std::string &Message,
-                    const std::string &ExecCommandLine) {
+// Tokenize the CommandLine to the command and the args to allow
+// defining a full command line as the command instead of just the
+// executed program. We cannot just pass the whole string after the command
+// as a single argument because then program sees only a single
+// command line argument (with spaces in it: "foo bar" instead
+// of "foo" and "bar").
+//
+// code borrowed from:
+// http://oopweb.com/CPP/Documents/CPPHOWTO/Volume/C++Programming-HOWTO-7.html
+static void lexCommand(std::string &Message, const std::string &CommandLine,
+                       std::string &CmdPath, std::vector<std::string> Args) {
 
   std::string Command = "";
-  std::vector<std::string> Args;
   std::string delimiters = " ";
 
-  // Tokenize the ExecCommandLine to the command and the args to allow
-  // defining a full command line as the command instead of just the
-  // executed program. We cannot just pass the whole string after the command
-  // as a single argument because then program sees only a single
-  // command line argument (with spaces in it: "foo bar" instead 
-  // of "foo" and "bar").
-
-  // code borrowed from: 
-  // http://oopweb.com/CPP/Documents/CPPHOWTO/Volume/C++Programming-HOWTO-7.html
-  std::string::size_type lastPos = 
-    ExecCommandLine.find_first_not_of(delimiters, 0);
-  std::string::size_type pos = 
-    ExecCommandLine.find_first_of(delimiters, lastPos);
+  std::string::size_type lastPos = CommandLine.find_first_not_of(delimiters, 0);
+  std::string::size_type pos = CommandLine.find_first_of(delimiters, lastPos);
 
   while (std::string::npos != pos || std::string::npos != lastPos) {
-    std::string token = ExecCommandLine.substr(lastPos, pos - lastPos);
+    std::string token = CommandLine.substr(lastPos, pos - lastPos);
     if (Command == "")
        Command = token;
     else
        Args.push_back(token);
     // Skip delimiters.  Note the "not_of"
-    lastPos = ExecCommandLine.find_first_not_of(delimiters, pos);
+    lastPos = CommandLine.find_first_not_of(delimiters, pos);
     // Find next "non-delimiter"
-    pos = ExecCommandLine.find_first_of(delimiters, lastPos);
+    pos = CommandLine.find_first_of(delimiters, lastPos);
   }
 
-  std::string CmdPath = sys::Program::FindProgramByName(Command).str();
+  CmdPath = sys::Program::FindProgramByName(Command).str();
   if (CmdPath.empty()) {
-    Message = 
-      std::string("Cannot find '") + Command + 
-      "' in executable directory or PATH!\n";
-    return 0;
+    Message =
+      std::string("Cannot find '") + Command +
+      "' in PATH!\n";
+    return;
   }
 
   Message = "Found command in: " + CmdPath + "\n";
+}
+
+// Custom execution environment create method, takes the execution command
+// as arguments
+AbstractInterpreter *AbstractInterpreter::createCustomCompiler(
+                    std::string &Message,
+                    const std::string &CompileCommandLine) {
+
+  std::string CmdPath;
+  std::vector<std::string> Args;
+  lexCommand(Message, CompileCommandLine, CmdPath, Args);
+  if (CmdPath.empty())
+    return 0;
+
+  return new CustomCompiler(CmdPath, Args);
+}
+
+// Custom execution environment create method, takes the execution command
+// as arguments
+AbstractInterpreter *AbstractInterpreter::createCustomExecutor(
+                    std::string &Message,
+                    const std::string &ExecCommandLine) {
+
+
+  std::string CmdPath;
+  std::vector<std::string> Args;
+  lexCommand(Message, ExecCommandLine, CmdPath, Args);
+  if (CmdPath.empty())
+    return 0;
 
   return new CustomExecutor(CmdPath, Args);
 }
@@ -355,7 +441,7 @@ AbstractInterpreter *AbstractInterpreter::createCustom(
 //===----------------------------------------------------------------------===//
 // LLC Implementation of AbstractIntepreter interface
 //
-GCC::FileType LLC::OutputCode(const std::string &Bitcode, 
+GCC::FileType LLC::OutputCode(const std::string &Bitcode,
                               sys::Path &OutputAsmFile, std::string &Error,
                               unsigned Timeout, unsigned MemoryLimit) {
   const char *Suffix = (UseIntegratedAssembler ? ".llc.o" : ".llc.s");
@@ -376,10 +462,10 @@ GCC::FileType LLC::OutputCode(const std::string &Bitcode,
   LLCArgs.push_back("-o");
   LLCArgs.push_back(OutputAsmFile.c_str()); // Output to the Asm file
   LLCArgs.push_back(Bitcode.c_str());      // This is the input bitcode
-  
+
   if (UseIntegratedAssembler)
     LLCArgs.push_back("-filetype=obj");
-  
+
   LLCArgs.push_back (0);
 
   outs() << (UseIntegratedAssembler ? "<llc-ia>" : "<llc>");
@@ -394,7 +480,7 @@ GCC::FileType LLC::OutputCode(const std::string &Bitcode,
                             Timeout, MemoryLimit))
     Error = ProcessFailure(sys::Path(LLCPath), &LLCArgs[0],
                            Timeout, MemoryLimit);
-  return UseIntegratedAssembler ? GCC::ObjectFile : GCC::AsmFile;  
+  return UseIntegratedAssembler ? GCC::ObjectFile : GCC::AsmFile;
 }
 
 void LLC::compileProgram(const std::string &Bitcode, std::string *Error,
@@ -437,9 +523,9 @@ LLC *AbstractInterpreter::createLLC(const char *Argv0,
                                     const std::vector<std::string> *GCCArgs,
                                     bool UseIntegratedAssembler) {
   std::string LLCPath =
-    FindExecutable("llc", Argv0, (void *)(intptr_t)&createLLC).str();
+    PrependMainExecutablePath("llc", Argv0, (void *)(intptr_t)&createLLC).str();
   if (LLCPath.empty()) {
-    Message = "Cannot find `llc' in executable directory or PATH!\n";
+    Message = "Cannot find `llc' in executable directory!\n";
     return 0;
   }
 
@@ -474,7 +560,7 @@ namespace {
                                const std::vector<std::string> &GCCArgs =
                                  std::vector<std::string>(),
                                const std::vector<std::string> &SharedLibs =
-                                 std::vector<std::string>(), 
+                                 std::vector<std::string>(),
                                unsigned Timeout = 0,
                                unsigned MemoryLimit = 0);
   };
@@ -517,7 +603,7 @@ int JIT::ExecuteProgram(const std::string &Bitcode,
   DEBUG(errs() << "\nSending output to " << OutputFile << "\n");
   return RunProgramWithTimeout(sys::Path(LLIPath), &JITArgs[0],
       sys::Path(InputFile), sys::Path(OutputFile), sys::Path(OutputFile),
-      Timeout, MemoryLimit);
+      Timeout, MemoryLimit, Error);
 }
 
 /// createJIT - Try to find the LLI executable
@@ -525,13 +611,13 @@ int JIT::ExecuteProgram(const std::string &Bitcode,
 AbstractInterpreter *AbstractInterpreter::createJIT(const char *Argv0,
                    std::string &Message, const std::vector<std::string> *Args) {
   std::string LLIPath =
-    FindExecutable("lli", Argv0, (void *)(intptr_t)&createJIT).str();
+    PrependMainExecutablePath("lli", Argv0, (void *)(intptr_t)&createJIT).str();
   if (!LLIPath.empty()) {
     Message = "Found lli: " + LLIPath + "\n";
     return new JIT(LLIPath, Args);
   }
 
-  Message = "Cannot find `lli' in executable directory or PATH!\n";
+  Message = "Cannot find `lli' in executable directory!\n";
   return 0;
 }
 
@@ -603,14 +689,14 @@ int CBE::ExecuteProgram(const std::string &Bitcode,
 ///
 CBE *AbstractInterpreter::createCBE(const char *Argv0,
                                     std::string &Message,
-                                    const std::string &GCCBinary, 
+                                    const std::string &GCCBinary,
                                     const std::vector<std::string> *Args,
                                     const std::vector<std::string> *GCCArgs) {
   sys::Path LLCPath =
-    FindExecutable("llc", Argv0, (void *)(intptr_t)&createCBE);
+    PrependMainExecutablePath("llc", Argv0, (void *)(intptr_t)&createCBE);
   if (LLCPath.isEmpty()) {
     Message =
-      "Cannot find `llc' in executable directory or PATH!\n";
+      "Cannot find `llc' in executable directory!\n";
     return 0;
   }
 
@@ -677,9 +763,9 @@ int GCC::ExecuteProgram(const std::string &ProgramFile,
         GCCArgs.push_back("-force_cpusubtype_ALL");
     }
   }
-  
+
   GCCArgs.push_back(ProgramFile.c_str());  // Specify the input filename.
-  
+
   GCCArgs.push_back("-x");
   GCCArgs.push_back("none");
   GCCArgs.push_back("-o");
@@ -771,7 +857,7 @@ int GCC::ExecuteProgram(const std::string &ProgramFile,
     DEBUG(errs() << "<run locally>");
     return RunProgramWithTimeout(OutputBinary, &ProgramArgs[0],
         sys::Path(InputFile), sys::Path(OutputFile), sys::Path(OutputFile),
-        Timeout, MemoryLimit);
+        Timeout, MemoryLimit, Error);
   } else {
     outs() << "<run remotely>"; outs().flush();
     return RunProgramRemotelyWithTimeout(sys::Path(RemoteClientPath),
@@ -793,7 +879,7 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
   OutputFile = uniqueFilename.str();
 
   std::vector<const char*> GCCArgs;
-  
+
   GCCArgs.push_back(GCCPath.c_str());
 
   if (TargetTriple.getArch() == Triple::x86)
@@ -816,7 +902,7 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
     GCCArgs.push_back("-G");       // Compile a shared library, `-G' for Sparc
   else if (TargetTriple.getOS() == Triple::Darwin) {
     // link all source files into a single module in data segment, rather than
-    // generating blocks. dynamic_lookup requires that you set 
+    // generating blocks. dynamic_lookup requires that you set
     // MACOSX_DEPLOYMENT_TARGET=10.3 in your env.  FIXME: it would be better for
     // bugpoint to just pass that in the environment of GCC.
     GCCArgs.push_back("-single_module");
@@ -837,8 +923,8 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
   GCCArgs.push_back(OutputFile.c_str()); // Output to the right filename.
   GCCArgs.push_back("-O2");              // Optimize the program a bit.
 
-  
-  
+
+
   // Add any arguments intended for GCC. We locate them here because this is
   // most likely -L and -l options that need to come before other libraries but
   // after the source. Other options won't be sensitive to placement on the
@@ -847,7 +933,7 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
     GCCArgs.push_back(ArgsForGCC[i].c_str());
   GCCArgs.push_back(0);                    // NULL terminator
 
-  
+
 
   outs() << "<gcc>"; outs().flush();
   DEBUG(errs() << "\nAbout to run:\t";
@@ -870,7 +956,7 @@ GCC *GCC::create(std::string &Message,
                  const std::vector<std::string> *Args) {
   sys::Path GCCPath = sys::Program::FindProgramByName(GCCBinary);
   if (GCCPath.isEmpty()) {
-    Message = "Cannot find `"+ GCCBinary +"' in executable directory or PATH!\n";
+    Message = "Cannot find `"+ GCCBinary +"' in PATH!\n";
     return 0;
   }
 
diff --git a/tools/bugpoint/ToolRunner.h b/tools/bugpoint/ToolRunner.h
index cda0ddf..cfa8acf 100644
--- a/tools/bugpoint/ToolRunner.h
+++ b/tools/bugpoint/ToolRunner.h
@@ -21,7 +21,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/System/Path.h"
+#include "llvm/Support/Path.h"
 #include <exception>
 #include <vector>
 
@@ -66,7 +66,7 @@ public:
                      const std::string &OutputFile,
                      std::string *Error = 0,
                      const std::vector<std::string> &GCCArgs =
-                         std::vector<std::string>(), 
+                         std::vector<std::string>(),
                      unsigned Timeout = 0,
                      unsigned MemoryLimit = 0);
 
@@ -103,8 +103,13 @@ public:
   static AbstractInterpreter* createJIT(const char *Argv0, std::string &Message,
                                         const std::vector<std::string> *Args=0);
 
-  static AbstractInterpreter* createCustom(std::string &Message,
-                                           const std::string &ExecCommandLine);
+  static AbstractInterpreter*
+  createCustomCompiler(std::string &Message,
+                       const std::string &CompileCommandLine);
+
+  static AbstractInterpreter*
+  createCustomExecutor(std::string &Message,
+                       const std::string &ExecCommandLine);
 
 
   virtual ~AbstractInterpreter() {}
diff --git a/tools/bugpoint/bugpoint.cpp b/tools/bugpoint/bugpoint.cpp
index 79cf563..f9c9e18 100644
--- a/tools/bugpoint/bugpoint.cpp
+++ b/tools/bugpoint/bugpoint.cpp
@@ -23,10 +23,14 @@
 #include "llvm/Support/PluginLoader.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/StandardPasses.h"
-#include "llvm/System/Process.h"
-#include "llvm/System/Signals.h"
-#include "llvm/System/Valgrind.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/Valgrind.h"
 #include "llvm/LinkAllVMCore.h"
+
+//Enable this macro to debug bugpoint itself.
+//#define DEBUG_BUGPOINT 1
+
 using namespace llvm;
 
 static cl::opt<bool> 
@@ -71,9 +75,11 @@ OverrideTriple("mtriple", cl::desc("Override target triple for module"));
 /// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
 bool llvm::BugpointIsInterrupted = false;
 
+#ifndef DEBUG_BUGPOINT
 static void BugpointInterruptFunction() {
   BugpointIsInterrupted = true;
 }
+#endif
 
 // Hack to capture a pass list.
 namespace {
@@ -91,14 +97,31 @@ namespace {
 }
 
 int main(int argc, char **argv) {
+#ifndef DEBUG_BUGPOINT
   llvm::sys::PrintStackTraceOnErrorSignal();
   llvm::PrettyStackTraceProgram X(argc, argv);
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+#endif
+  
+  // Initialize passes
+  PassRegistry &Registry = *PassRegistry::getPassRegistry();
+  initializeCore(Registry);
+  initializeScalarOpts(Registry);
+  initializeIPO(Registry);
+  initializeAnalysis(Registry);
+  initializeIPA(Registry);
+  initializeTransformUtils(Registry);
+  initializeInstCombine(Registry);
+  initializeInstrumentation(Registry);
+  initializeTarget(Registry);
+  
   cl::ParseCommandLineOptions(argc, argv,
                               "LLVM automatic testcase reducer. See\nhttp://"
                               "llvm.org/cmds/bugpoint.html"
                               " for more information.\n");
+#ifndef DEBUG_BUGPOINT
   sys::SetInterruptFunction(BugpointInterruptFunction);
+#endif
 
   LLVMContext& Context = getGlobalContext();
   // If we have an override, set it and then track the triple we want Modules
@@ -147,7 +170,9 @@ int main(int argc, char **argv) {
 
   // Bugpoint has the ability of generating a plethora of core files, so to
   // avoid filling up the disk, we prevent it
+#ifndef DEBUG_BUGPOINT
   sys::Process::PreventCoreFiles();
+#endif
 
   std::string Error;
   bool Failure = D.run(Error);
diff --git a/tools/edis/CMakeLists.txt b/tools/edis/CMakeLists.txt
index 2019995..5037f9f 100644
--- a/tools/edis/CMakeLists.txt
+++ b/tools/edis/CMakeLists.txt
@@ -1,5 +1,3 @@
-set(LLVM_NO_RTTI 1)
-
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 
 add_llvm_library(EnhancedDisassembly
diff --git a/tools/edis/Makefile b/tools/edis/Makefile
index 92484bf..b5557fc 100644
--- a/tools/edis/Makefile
+++ b/tools/edis/Makefile
@@ -1,4 +1,4 @@
-##===- tools/ed/Makefile -----------------------------------*- Makefile -*-===##
+##===- tools/edis/Makefile -----------------------------------*- Makefile -*-===##
 # 
 #                     The LLVM Compiler Infrastructure
 #
@@ -26,7 +26,7 @@ ifneq ($(filter $(TARGETS_TO_BUILD), X86),)
 LINK_COMPONENTS += x86asmprinter x86disassembler
 endif
 
-# If the X86 target is enabled, link in the asmprinter and disassembler.
+# If the ARM target is enabled, link in the asmprinter and disassembler.
 ifneq ($(filter $(TARGETS_TO_BUILD), ARM),)
 LINK_COMPONENTS += armasmprinter armdisassembler
 endif
diff --git a/tools/gold/Makefile b/tools/gold/Makefile
index 1627346..66a0271 100644
--- a/tools/gold/Makefile
+++ b/tools/gold/Makefile
@@ -19,10 +19,9 @@ include $(LEVEL)/Makefile.config
 
 LINK_LIBS_IN_SHARED=1
 SHARED_LIBRARY = 1
-BUILD_ARCHIVE = 0
 LOADABLE_MODULE = 1
 
-LINK_COMPONENTS := support system
+LINK_COMPONENTS := support
 LIBS += -llto
 
 # Because off_t is used in the public API, the largefile parts are required for
diff --git a/tools/gold/gold-plugin.cpp b/tools/gold/gold-plugin.cpp
index 4b58fae..ad2774a 100644
--- a/tools/gold/gold-plugin.cpp
+++ b/tools/gold/gold-plugin.cpp
@@ -17,10 +17,10 @@
 
 #include "llvm-c/lto.h"
 
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Errno.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Program.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Errno.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Program.h"
 
 #include <cerrno>
 #include <cstdlib>
@@ -29,6 +29,13 @@
 #include <list>
 #include <vector>
 
+// Support Windows/MinGW crazyness.
+#ifdef _WIN32
+# include <io.h>
+# define lseek _lseek
+# define read _read
+#endif
+
 using namespace llvm;
 
 namespace {
@@ -49,7 +56,6 @@ namespace {
   int gold_version = 0;
 
   struct claimed_file {
-    lto_module_t M;
     void *handle;
     std::vector<ld_plugin_symbol> syms;
   };
@@ -58,6 +64,7 @@ namespace {
   std::string output_name = "";
   std::list<claimed_file> Modules;
   std::vector<sys::Path> Cleanup;
+  lto_code_gen_t code_gen;
 }
 
 namespace options {
@@ -65,6 +72,7 @@ namespace options {
   static bool generate_api_file = false;
   static generate_bc generate_bc_file = BC_NO;
   static std::string bc_path;
+  static std::string obj_path;
   static std::string as_path;
   static std::vector<std::string> as_args;
   static std::vector<std::string> pass_through;
@@ -105,6 +113,8 @@ namespace options {
       pass_through.push_back(item.str());
     } else if (opt.startswith("mtriple=")) {
       triple = opt.substr(strlen("mtriple="));
+    } else if (opt.startswith("obj-path=")) {
+      obj_path = opt.substr(strlen("obj-path="));
     } else if (opt == "emit-llvm") {
       generate_bc_file = BC_ONLY;
     } else if (opt == "also-emit-llvm") {
@@ -226,6 +236,8 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
     return LDPS_ERR;
   }
 
+  code_gen = lto_codegen_create();
+
   return LDPS_OK;
 }
 
@@ -234,7 +246,8 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
 /// with add_symbol if possible.
 static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
                                         int *claimed) {
-  void *buf = NULL;
+  lto_module_t M;
+
   if (file->offset) {
     // Gold has found what might be IR part-way inside of a file, such as
     // an .a archive.
@@ -245,7 +258,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
                  file->offset, sys::StrError(errno).c_str());
       return LDPS_ERR;
     }
-    buf = malloc(file->filesize);
+    void *buf = malloc(file->filesize);
     if (!buf) {
       (*message)(LDPL_ERROR,
                  "Failed to allocate buffer for archive member of size: %d\n",
@@ -265,37 +278,50 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
       free(buf);
       return LDPS_OK;
     }
-  } else if (!lto_module_is_object_file(file->name))
-    return LDPS_OK;
+    M = lto_module_create_from_memory(buf, file->filesize);
+    if (!M) {
+      (*message)(LDPL_ERROR, "Failed to create LLVM module: %s",
+                 lto_get_error_message());
+      return LDPS_ERR;
+    }
+    free(buf);
+  } else {
+    // FIXME: We should not need to pass -1 as the file size, but there
+    // is a bug in BFD that causes it to pass 0 to us. Remove this once
+    // that is fixed.
+    off_t size = file->filesize ? file->filesize : -1;
+
+    // FIXME: We should not need to reset the position in the file, but there
+    // is a bug in BFD. Remove this once that is fixed.
+    off_t old_pos = lseek(file->fd, 0, SEEK_CUR);
+
+    lseek(file->fd, 0, SEEK_SET);
+    M = lto_module_create_from_fd(file->fd, file->name, size);
+
+    lseek(file->fd, old_pos, SEEK_SET);
+    if (!M)
+      return LDPS_OK;
+  }
 
   *claimed = 1;
   Modules.resize(Modules.size() + 1);
   claimed_file &cf = Modules.back();
 
-  cf.M = buf ? lto_module_create_from_memory(buf, file->filesize) :
-               lto_module_create(file->name);
-  free(buf);
-  if (!cf.M) {
-    (*message)(LDPL_ERROR, "Failed to create LLVM module: %s",
-               lto_get_error_message());
-    return LDPS_ERR;
-  }
-
   if (!options::triple.empty())
-    lto_module_set_target_triple(cf.M, options::triple.c_str());
+    lto_module_set_target_triple(M, options::triple.c_str());
 
   cf.handle = file->handle;
-  unsigned sym_count = lto_module_get_num_symbols(cf.M);
+  unsigned sym_count = lto_module_get_num_symbols(M);
   cf.syms.reserve(sym_count);
 
   for (unsigned i = 0; i != sym_count; ++i) {
-    lto_symbol_attributes attrs = lto_module_get_symbol_attribute(cf.M, i);
+    lto_symbol_attributes attrs = lto_module_get_symbol_attribute(M, i);
     if ((attrs & LTO_SYMBOL_SCOPE_MASK) == LTO_SYMBOL_SCOPE_INTERNAL)
       continue;
 
     cf.syms.push_back(ld_plugin_symbol());
     ld_plugin_symbol &sym = cf.syms.back();
-    sym.name = const_cast<char *>(lto_module_get_symbol_name(cf.M, i));
+    sym.name = const_cast<char *>(lto_module_get_symbol_name(M, i));
     sym.version = NULL;
 
     int scope = attrs & LTO_SYMBOL_SCOPE_MASK;
@@ -316,6 +342,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
     }
 
     int definition = attrs & LTO_SYMBOL_DEFINITION_MASK;
+    sym.comdat_key = NULL;
     switch (definition) {
       case LTO_SYMBOL_DEFINITION_REGULAR:
         sym.def = LDPK_DEF;
@@ -327,6 +354,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
         sym.def = LDPK_COMMON;
         break;
       case LTO_SYMBOL_DEFINITION_WEAK:
+        sym.comdat_key = sym.name;
         sym.def = LDPK_WEAKDEF;
         break;
       case LTO_SYMBOL_DEFINITION_WEAKUNDEF:
@@ -337,9 +365,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
         return LDPS_ERR;
     }
 
-    // LLVM never emits COMDAT.
     sym.size = 0;
-    sym.comdat_key = NULL;
 
     sym.resolution = LDPR_UNKNOWN;
   }
@@ -353,6 +379,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
     }
   }
 
+  lto_codegen_add_module(code_gen, M);
   return LDPS_OK;
 }
 
@@ -361,12 +388,6 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
 /// been overridden by a native object file. Then, perform optimization and
 /// codegen.
 static ld_plugin_status all_symbols_read_hook(void) {
-  lto_code_gen_t cg = lto_codegen_create();
-
-  for (std::list<claimed_file>::iterator I = Modules.begin(),
-       E = Modules.end(); I != E; ++I)
-    lto_codegen_add_module(cg, I->M);
-
   std::ofstream api_file;
   if (options::generate_api_file) {
     api_file.open("apifile.txt", std::ofstream::out | std::ofstream::trunc);
@@ -384,7 +405,7 @@ static ld_plugin_status all_symbols_read_hook(void) {
     (*get_symbols)(I->handle, I->syms.size(), &I->syms[0]);
     for (unsigned i = 0, e = I->syms.size(); i != e; i++) {
       if (I->syms[i].resolution == LDPR_PREVAILING_DEF) {
-        lto_codegen_add_must_preserve_symbol(cg, I->syms[i].name);
+        lto_codegen_add_must_preserve_symbol(code_gen, I->syms[i].name);
         anySymbolsPreserved = true;
 
         if (options::generate_api_file)
@@ -398,15 +419,15 @@ static ld_plugin_status all_symbols_read_hook(void) {
 
   if (!anySymbolsPreserved) {
     // All of the IL is unnecessary!
-    lto_codegen_dispose(cg);
+    lto_codegen_dispose(code_gen);
     return LDPS_OK;
   }
 
-  lto_codegen_set_pic_model(cg, output_type);
-  lto_codegen_set_debug_model(cg, LTO_DEBUG_MODEL_DWARF);
+  lto_codegen_set_pic_model(code_gen, output_type);
+  lto_codegen_set_debug_model(code_gen, LTO_DEBUG_MODEL_DWARF);
   if (!options::as_path.empty()) {
     sys::Path p = sys::Program::FindProgramByName(options::as_path);
-    lto_codegen_set_assembler_path(cg, p.c_str());
+    lto_codegen_set_assembler_path(code_gen, p.c_str());
   }
   if (!options::as_args.empty()) {
     std::vector<const char *> as_args_p;
@@ -414,20 +435,19 @@ static ld_plugin_status all_symbols_read_hook(void) {
            E = options::as_args.end(); I != E; ++I) {
       as_args_p.push_back(I->c_str());
     }
-    lto_codegen_set_assembler_args(cg, &as_args_p[0], as_args_p.size());
+    lto_codegen_set_assembler_args(code_gen, &as_args_p[0], as_args_p.size());
   }
   if (!options::mcpu.empty())
-    lto_codegen_set_cpu(cg, options::mcpu.c_str());
+    lto_codegen_set_cpu(code_gen, options::mcpu.c_str());
 
   // Pass through extra options to the code generator.
   if (!options::extra.empty()) {
     for (std::vector<std::string>::iterator it = options::extra.begin();
          it != options::extra.end(); ++it) {
-      lto_codegen_debug_options(cg, (*it).c_str());
+      lto_codegen_debug_options(code_gen, (*it).c_str());
     }
   }
 
-
   if (options::generate_bc_file != options::BC_NO) {
     std::string path;
     if (options::generate_bc_file == options::BC_ONLY)
@@ -436,45 +456,51 @@ static ld_plugin_status all_symbols_read_hook(void) {
       path = options::bc_path;
     else
       path = output_name + ".bc";
-    bool err = lto_codegen_write_merged_modules(cg, path.c_str());
+    bool err = lto_codegen_write_merged_modules(code_gen, path.c_str());
     if (err)
       (*message)(LDPL_FATAL, "Failed to write the output file.");
     if (options::generate_bc_file == options::BC_ONLY)
       exit(0);
   }
   size_t bufsize = 0;
-  const char *buffer = static_cast<const char *>(lto_codegen_compile(cg,
+  const char *buffer = static_cast<const char *>(lto_codegen_compile(code_gen,
                                                                      &bufsize));
 
   std::string ErrMsg;
 
-  sys::Path uniqueObjPath("/tmp/llvmgold.o");
-  if (uniqueObjPath.createTemporaryFileOnDisk(true, &ErrMsg)) {
-    (*message)(LDPL_ERROR, "%s", ErrMsg.c_str());
-    return LDPS_ERR;
-  }
-  tool_output_file objFile(uniqueObjPath.c_str(), ErrMsg,
-                           raw_fd_ostream::F_Binary);
-  if (!ErrMsg.empty()) {
-    (*message)(LDPL_ERROR, "%s", ErrMsg.c_str());
-    return LDPS_ERR;
+  const char *objPath;
+  if (!options::obj_path.empty()) {
+    objPath = options::obj_path.c_str();
+  } else {
+    sys::Path uniqueObjPath("/tmp/llvmgold.o");
+    if (uniqueObjPath.createTemporaryFileOnDisk(true, &ErrMsg)) {
+      (*message)(LDPL_ERROR, "%s", ErrMsg.c_str());
+      return LDPS_ERR;
+    }
+    objPath = uniqueObjPath.c_str();
   }
+  tool_output_file objFile(objPath, ErrMsg,
+                             raw_fd_ostream::F_Binary);
+    if (!ErrMsg.empty()) {
+      (*message)(LDPL_ERROR, "%s", ErrMsg.c_str());
+      return LDPS_ERR;
+    }
 
   objFile.os().write(buffer, bufsize);
   objFile.os().close();
   if (objFile.os().has_error()) {
     (*message)(LDPL_ERROR, "Error writing output file '%s'",
-               uniqueObjPath.c_str());
+               objPath);
     objFile.os().clear_error();
     return LDPS_ERR;
   }
   objFile.keep();
 
-  lto_codegen_dispose(cg);
+  lto_codegen_dispose(code_gen);
 
-  if ((*add_input_file)(uniqueObjPath.c_str()) != LDPS_OK) {
+  if ((*add_input_file)(objPath) != LDPS_OK) {
     (*message)(LDPL_ERROR, "Unable to add .o file to the link.");
-    (*message)(LDPL_ERROR, "File left behind in: %s", uniqueObjPath.c_str());
+    (*message)(LDPL_ERROR, "File left behind in: %s", objPath);
     return LDPS_ERR;
   }
 
@@ -502,7 +528,8 @@ static ld_plugin_status all_symbols_read_hook(void) {
     }
   }
 
-  Cleanup.push_back(uniqueObjPath);
+  if (options::obj_path.empty())
+    Cleanup.push_back(sys::Path(objPath));
 
   return LDPS_OK;
 }
diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 8bcc2d8..bb426a9 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -28,8 +28,9 @@
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PluginLoader.h"
 #include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Signals.h"
 #include "llvm/Target/SubtargetFeature.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
@@ -95,6 +96,8 @@ FileType("filetype", cl::init(TargetMachine::CGFT_AssemblyFile),
 cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
                        cl::desc("Do not verify input module"));
 
+cl::opt<bool> DisableDotLoc("disable-dot-loc", cl::Hidden,
+                            cl::desc("Do not use .loc entries"));
 
 static cl::opt<bool>
 DisableRedZone("disable-red-zone",
@@ -273,6 +276,21 @@ int main(int argc, char **argv) {
   assert(target.get() && "Could not allocate target machine!");
   TargetMachine &Target = *target.get();
 
+  if (DisableDotLoc)
+    Target.setMCUseLoc(false);
+  if (TheTriple.getOS() == Triple::Darwin) {
+    switch (TheTriple.getDarwinMajorNumber()) {
+    case 7:
+    case 8:
+    case 9:
+      // disable .loc support for older darwin OS.
+      Target.setMCUseLoc(false);
+      break;
+    default:
+      break;
+    }
+  }
+
   // Figure out where we are going to send the output...
   OwningPtr<tool_output_file> Out
     (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
diff --git a/tools/lli/CMakeLists.txt b/tools/lli/CMakeLists.txt
index ce70d46e..9378ef2 100644
--- a/tools/lli/CMakeLists.txt
+++ b/tools/lli/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_LINK_COMPONENTS jit interpreter nativecodegen bitreader selectiondag)
+set(LLVM_LINK_COMPONENTS mcjit jit interpreter nativecodegen bitreader asmparser selectiondag)
 
 add_llvm_tool(lli
   lli.cpp
diff --git a/tools/lli/Makefile b/tools/lli/Makefile
index 8f6eeed..80aa82b 100644
--- a/tools/lli/Makefile
+++ b/tools/lli/Makefile
@@ -9,7 +9,7 @@
 
 LEVEL    := ../..
 TOOLNAME := lli
-LINK_COMPONENTS := jit interpreter nativecodegen bitreader selectiondag
+LINK_COMPONENTS := mcjit jit interpreter nativecodegen bitreader asmparser selectiondag
 
 # Enable JIT support
 include $(LEVEL)/Makefile.common
diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp
index 4c37780..a756459 100644
--- a/tools/lli/lli.cpp
+++ b/tools/lli/lli.cpp
@@ -23,16 +23,26 @@
 #include "llvm/ExecutionEngine/Interpreter.h"
 #include "llvm/ExecutionEngine/JIT.h"
 #include "llvm/ExecutionEngine/JITEventListener.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/IRReader.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PluginLoader.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Process.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Signals.h"
 #include "llvm/Target/TargetSelect.h"
 #include <cerrno>
+
+#ifdef __CYGWIN__
+#include <cygwin/version.h>
+#if defined(CYGWIN_VERSION_DLL_MAJOR) && CYGWIN_VERSION_DLL_MAJOR<1007
+#define DO_NOTHING_ATEXIT 1
+#endif
+#endif
+
 using namespace llvm;
 
 namespace {
@@ -46,6 +56,10 @@ namespace {
                                  cl::desc("Force interpretation: disable JIT"),
                                  cl::init(false));
 
+  cl::opt<bool> UseMCJIT(
+    "use-mcjit", cl::desc("Enable use of the MC-based JIT (if available)"),
+    cl::init(false));
+
   // Determine optimization level.
   cl::opt<char>
   OptLevel("O",
@@ -99,8 +113,11 @@ namespace {
 static ExecutionEngine *EE = 0;
 
 static void do_shutdown() {
+  // Cygwin-1.5 invokes DLL's dtors before atexit handler.
+#ifndef DO_NOTHING_ATEXIT
   delete EE;
   llvm_shutdown();
+#endif
 }
 
 //===----------------------------------------------------------------------===//
@@ -125,20 +142,15 @@ int main(int argc, char **argv, char * const *envp) {
     sys::Process::PreventCoreFiles();
   
   // Load the bitcode...
-  std::string ErrorMsg;
-  Module *Mod = NULL;
-  if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)){
-    Mod = getLazyBitcodeModule(Buffer, Context, &ErrorMsg);
-    if (!Mod) delete Buffer;
-  }
-  
+  SMDiagnostic Err;
+  Module *Mod = ParseIRFile(InputFile, Err, Context);
   if (!Mod) {
-    errs() << argv[0] << ": error loading program '" << InputFile << "': "
-           << ErrorMsg << "\n";
-    exit(1);
+    Err.Print(argv[0], errs());
+    return 1;
   }
 
   // If not jitting lazily, load the whole bitcode file eagerly too.
+  std::string ErrorMsg;
   if (NoLazyCompilation) {
     if (Mod->MaterializeAllPermanently(&ErrorMsg)) {
       errs() << argv[0] << ": bitcode didn't read correctly.\n";
@@ -160,6 +172,10 @@ int main(int argc, char **argv, char * const *envp) {
   if (!TargetTriple.empty())
     Mod->setTargetTriple(Triple::normalize(TargetTriple));
 
+  // Enable MCJIT, if desired.
+  if (UseMCJIT)
+    builder.setUseMCJIT(true);
+
   CodeGenOpt::Level OLvl = CodeGenOpt::Default;
   switch (OptLevel) {
   default:
diff --git a/tools/llvm-ar/llvm-ar.cpp b/tools/llvm-ar/llvm-ar.cpp
index 021a369..c1c8b24 100644
--- a/tools/llvm-ar/llvm-ar.cpp
+++ b/tools/llvm-ar/llvm-ar.cpp
@@ -16,13 +16,13 @@
 #include "llvm/Module.h"
 #include "llvm/Bitcode/Archive.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Format.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
-#include <iostream>
+#include "llvm/Support/Signals.h"
 #include <algorithm>
-#include <iomanip>
 #include <memory>
 #include <fstream>
 using namespace llvm;
@@ -274,7 +274,7 @@ ArchiveOperation parseCommandLine() {
 // finds with all the files in that directory (recursively). It uses the
 // sys::Path::getDirectoryContent method to perform the actual directory scans.
 bool
-recurseDirectories(const sys::Path& path, 
+recurseDirectories(const sys::Path& path,
                    std::set<sys::Path>& result, std::string* ErrMsg) {
   result.clear();
   if (RecurseDirectories) {
@@ -311,7 +311,8 @@ bool buildPaths(bool checkExistence, std::string* ErrMsg) {
     if (!aPath.set(Members[i]))
       throw std::string("File member name invalid: ") + Members[i];
     if (checkExistence) {
-      if (!aPath.exists())
+      bool Exists;
+      if (sys::fs::exists(aPath.str(), Exists) || !Exists)
         throw std::string("File does not exist: ") + Members[i];
       std::string Err;
       sys::PathWithStatus PwS(aPath);
@@ -335,12 +336,12 @@ bool buildPaths(bool checkExistence, std::string* ErrMsg) {
 
 // printSymbolTable - print out the archive's symbol table.
 void printSymbolTable() {
-  std::cout << "\nArchive Symbol Table:\n";
+  outs() << "\nArchive Symbol Table:\n";
   const Archive::SymTabType& symtab = TheArchive->getSymbolTable();
   for (Archive::SymTabType::const_iterator I=symtab.begin(), E=symtab.end();
        I != E; ++I ) {
     unsigned offset = TheArchive->getFirstFileOffset() + I->second;
-    std::cout << " " << std::setw(9) << offset << "\t" << I->first <<"\n";
+    outs() << " " << format("%9u", offset) << "\t" << I->first <<"\n";
   }
 }
 
@@ -365,10 +366,10 @@ bool doPrint(std::string* ErrMsg) {
           continue;
 
         if (Verbose)
-          std::cout << "Printing " << I->getPath().str() << "\n";
+          outs() << "Printing " << I->getPath().str() << "\n";
 
         unsigned len = I->getSize();
-        std::cout.write(data, len);
+        outs().write(data, len);
       } else {
         countDown--;
       }
@@ -379,27 +380,27 @@ bool doPrint(std::string* ErrMsg) {
 
 // putMode - utility function for printing out the file mode when the 't'
 // operation is in verbose mode.
-void 
+void
 printMode(unsigned mode) {
   if (mode & 004)
-    std::cout << "r";
+    outs() << "r";
   else
-    std::cout << "-";
+    outs() << "-";
   if (mode & 002)
-    std::cout << "w";
+    outs() << "w";
   else
-    std::cout << "-";
+    outs() << "-";
   if (mode & 001)
-    std::cout << "x";
+    outs() << "x";
   else
-    std::cout << "-";
+    outs() << "-";
 }
 
 // doDisplayTable - Implement the 't' operation. This function prints out just
 // 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.
-bool 
+bool
 doDisplayTable(std::string* ErrMsg) {
   if (buildPaths(false, ErrMsg))
     return true;
@@ -411,22 +412,22 @@ doDisplayTable(std::string* ErrMsg) {
         // FIXME: Output should be this format:
         // Zrw-r--r--  500/ 500    525 Nov  8 17:42 2004 Makefile
         if (I->isBitcode())
-          std::cout << "b";
+          outs() << "b";
         else if (I->isCompressed())
-          std::cout << "Z";
+          outs() << "Z";
         else
-          std::cout << " ";
+          outs() << " ";
         unsigned mode = I->getMode();
         printMode((mode >> 6) & 007);
         printMode((mode >> 3) & 007);
         printMode(mode & 007);
-        std::cout << " " << std::setw(4) << I->getUser();
-        std::cout << "/" << std::setw(4) << I->getGroup();
-        std::cout << " " << std::setw(8) << I->getSize();
-        std::cout << " " << std::setw(20) << I->getModTime().str().substr(4);
-        std::cout << " " << I->getPath().str() << "\n";
+        outs() << " " << format("%4u", I->getUser());
+        outs() << "/" << format("%4u", I->getGroup());
+        outs() << " " << format("%8u", I->getSize());
+        outs() << " " << format("%20s", I->getModTime().str().substr(4).c_str());
+        outs() << " " << I->getPath().str() << "\n";
       } else {
-        std::cout << I->getPath().str() << "\n";
+        outs() << I->getPath().str() << "\n";
       }
     }
   }
@@ -437,7 +438,7 @@ doDisplayTable(std::string* ErrMsg) {
 
 // doExtract - Implement the 'x' operation. This function extracts files back to
 // the file system, making sure to uncompress any that were compressed
-bool 
+bool
 doExtract(std::string* ErrMsg) {
   if (buildPaths(false, ErrMsg))
     return true;
@@ -450,7 +451,7 @@ doExtract(std::string* ErrMsg) {
       if (I->hasPath()) {
         sys::Path dirs(I->getPath());
         dirs.eraseComponent();
-        if (dirs.createDirectoryOnDisk(/*create_parents=*/true, ErrMsg)) 
+        if (dirs.createDirectoryOnDisk(/*create_parents=*/true, ErrMsg))
           return true;
       }
 
@@ -480,11 +481,11 @@ doExtract(std::string* ErrMsg) {
 // members from the archive. Note that if the count is specified, there should
 // be no more than one path in the Paths list or else this algorithm breaks.
 // That check is enforced in parseCommandLine (above).
-bool 
+bool
 doDelete(std::string* ErrMsg) {
   if (buildPaths(false, ErrMsg))
     return true;
-  if (Paths.empty()) 
+  if (Paths.empty())
     return false;
   unsigned countDown = Count;
   for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
@@ -513,9 +514,9 @@ doDelete(std::string* ErrMsg) {
 // order of the archive members so that when the archive is written the move
 // of the members is accomplished. Note the use of the RelPos variable to
 // determine where the items should be moved to.
-bool 
+bool
 doMove(std::string* ErrMsg) {
-  if (buildPaths(false, ErrMsg)) 
+  if (buildPaths(false, ErrMsg))
     return true;
 
   // By default and convention the place to move members to is the end of the
@@ -566,12 +567,12 @@ doMove(std::string* ErrMsg) {
 
 // doQuickAppend - Implements the 'q' operation. This function just
 // indiscriminantly adds the members to the archive and rebuilds it.
-bool 
+bool
 doQuickAppend(std::string* ErrMsg) {
   // Get the list of paths to append.
   if (buildPaths(true, ErrMsg))
     return true;
-  if (Paths.empty()) 
+  if (Paths.empty())
     return false;
 
   // Append them quickly.
@@ -591,13 +592,13 @@ doQuickAppend(std::string* ErrMsg) {
 
 // doReplaceOrInsert - Implements the 'r' operation. This function will replace
 // any existing files or insert new ones into the archive.
-bool 
+bool
 doReplaceOrInsert(std::string* ErrMsg) {
 
   // Build the list of files to be added/replaced.
   if (buildPaths(true, ErrMsg))
     return true;
-  if (Paths.empty()) 
+  if (Paths.empty())
     return false;
 
   // Keep track of the paths that remain to be inserted.
@@ -637,7 +638,7 @@ doReplaceOrInsert(std::string* ErrMsg) {
 
     if (found != remaining.end()) {
       std::string Err;
-      sys::PathWithStatus PwS(*found); 
+      sys::PathWithStatus PwS(*found);
       const sys::FileStatus *si = PwS.getFileStatus(false, &Err);
       if (!si)
         return true;
@@ -716,7 +717,8 @@ int main(int argc, char **argv) {
       throw std::string("Archive name invalid: ") + ArchiveName;
 
     // Create or open the archive object.
-    if (!ArchivePath.exists()) {
+    bool Exists;
+    if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists) {
       // Produce a warning if we should and we're creating the archive
       if (!Create)
         errs() << argv[0] << ": creating " << ArchivePath.str() << "\n";
diff --git a/tools/llvm-as/llvm-as.cpp b/tools/llvm-as/llvm-as.cpp
index 1eaa4b3..c1661cd 100644
--- a/tools/llvm-as/llvm-as.cpp
+++ b/tools/llvm-as/llvm-as.cpp
@@ -25,8 +25,8 @@
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Signals.h"
 #include <memory>
 using namespace llvm;
 
diff --git a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
index 9c0d675..980f278 100644
--- a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
+++ b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
@@ -27,6 +27,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/Analysis/Verifier.h"
 #include "llvm/Bitcode/BitstreamReader.h"
 #include "llvm/Bitcode/LLVMBitCodes.h"
@@ -37,7 +38,8 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
 #include <cstdio>
 #include <map>
 #include <algorithm>
@@ -57,15 +59,22 @@ static cl::opt<bool> NoHistogram("disable-histogram",
 
 static cl::opt<bool>
 NonSymbolic("non-symbolic",
-            cl::desc("Emit numberic info in dump even if"
+            cl::desc("Emit numeric info in dump even if"
                      " symbolic info is available"));
 
-/// CurStreamType - If we can sniff the flavor of this stream, we can produce
-/// better dump info.
-static enum {
+namespace {
+
+/// CurStreamTypeType - A type for CurStreamType
+enum CurStreamTypeType {
   UnknownBitstream,
   LLVMIRBitstream
-} CurStreamType;
+};
+
+}
+
+/// CurStreamType - If we can sniff the flavor of this stream, we can produce
+/// better dump info.
+static CurStreamTypeType CurStreamType;
 
 
 /// GetBlockName - Return a symbolic block name if known, otherwise return
@@ -254,6 +263,7 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
     switch(CodeID) {
     default:return 0;
     case bitc::METADATA_ATTACHMENT:  return "METADATA_ATTACHMENT";
+    case bitc::METADATA_ATTACHMENT2: return "METADATA_ATTACHMENT2";
     }
   case bitc::METADATA_BLOCK_ID:
     switch(CodeID) {
@@ -268,7 +278,6 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
     case bitc::METADATA_NODE2:       return "METADATA_NODE2";
     case bitc::METADATA_FN_NODE2:    return "METADATA_FN_NODE2";
     case bitc::METADATA_NAMED_NODE2: return "METADATA_NAMED_NODE2";
-    case bitc::METADATA_ATTACHMENT2: return "METADATA_ATTACHMENT2";
     }
   }
 }
@@ -473,10 +482,11 @@ static void PrintSize(uint64_t Bits) {
 /// AnalyzeBitcode - Analyze the bitcode file specified by InputFilename.
 static int AnalyzeBitcode() {
   // Read the input file.
-  MemoryBuffer *MemBuf = MemoryBuffer::getFileOrSTDIN(InputFilename.c_str());
+  OwningPtr<MemoryBuffer> MemBuf;
 
-  if (MemBuf == 0)
-    return Error("Error reading '" + InputFilename + "'.");
+  if (error_code ec =
+        MemoryBuffer::getFileOrSTDIN(InputFilename.c_str(), MemBuf))
+    return Error("Error reading '" + InputFilename + "': " + ec.message());
 
   if (MemBuf->getBufferSize() & 3)
     return Error("Bitcode stream should be a multiple of 4 bytes in length");
diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
index 663cae5..d33ff0d 100644
--- a/tools/llvm-config/CMakeLists.txt
+++ b/tools/llvm-config/CMakeLists.txt
@@ -70,6 +70,8 @@ if( NOT NM_PATH )
   message(FATAL_ERROR "`nm' not found")
 endif()
 
+get_property(llvm_libs GLOBAL PROPERTY LLVM_LIBS)
+
 add_custom_command(OUTPUT ${LIBDEPS_TMP}
   COMMAND ${PERL_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/GenLibDeps.pl -flat ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/${CMAKE_CFG_INTDIR} ${NM_PATH} > ${LIBDEPS_TMP}
   DEPENDS ${llvm_libs}
@@ -80,8 +82,11 @@ add_custom_command(OUTPUT ${LIBDEPS}
   DEPENDS ${LIBDEPS_TMP}
   COMMENT "Updating ${LIBDEPS} if necessary...")
 
+# This must stop the build if find-cycles.pl returns error:
 add_custom_command(OUTPUT ${FINAL_LIBDEPS}
-  COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/find-cycles.pl < ${LIBDEPS} > ${FINAL_LIBDEPS} || ${CMAKE_COMMAND} -E remove -f ${FINAL_LIBDEPS}
+  COMMAND ${CMAKE_COMMAND} -E remove -f ${FINAL_LIBDEPS} ${FINAL_LIBDEPS}.tmp
+  COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/find-cycles.pl < ${LIBDEPS} > ${FINAL_LIBDEPS}.tmp
+  COMMAND ${CMAKE_COMMAND} -E copy ${FINAL_LIBDEPS}.tmp ${FINAL_LIBDEPS}
   DEPENDS ${LIBDEPS}
   COMMENT "Checking for cyclic dependencies between LLVM libraries.")
 
@@ -89,6 +94,17 @@ set(C_FLGS "${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
 set(CXX_FLGS "${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
 set(CPP_FLGS "${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
 
+# We don't want certain flags on the output of
+# llvm-config --cflags --cxxflags
+macro(remove_option_from_llvm_config option)
+  llvm_replace_compiler_option(C_FLGS "${option}" "")
+  llvm_replace_compiler_option(CXX_FLGS "${option}" "")
+  llvm_replace_compiler_option(CPP_FLGS "${option}" "")
+endmacro(remove_option_from_llvm_config)
+remove_option_from_llvm_config("-pedantic")
+remove_option_from_llvm_config("-Wall")
+remove_option_from_llvm_config("-W")
+
 add_custom_command(OUTPUT ${LLVM_CONFIG}
   COMMAND echo 's!@LLVM_CPPFLAGS@!${CPP_FLGS}!' > temp.sed
   COMMAND echo 's!@LLVM_CFLAGS@!${C_FLGS}!' >> temp.sed
@@ -108,6 +124,7 @@ add_custom_command(OUTPUT ${LLVM_CONFIG}
 add_custom_target(llvm-config.target ALL
   DEPENDS ${LLVM_CONFIG})
 
+get_property(llvm_lib_targets GLOBAL PROPERTY LLVM_LIB_TARGETS)
 add_dependencies(llvm-config.target ${llvm_lib_targets})
 
 # Make sure that llvm-config builds before the llvm tools, so we have
diff --git a/tools/llvm-config/llvm-config.in.in b/tools/llvm-config/llvm-config.in.in
index d435d57..840a10e 100644
--- a/tools/llvm-config/llvm-config.in.in
+++ b/tools/llvm-config/llvm-config.in.in
@@ -197,7 +197,7 @@ Options:
 Typical components:
   all                All LLVM libraries (default).
   backend            Either a native backend or the C backend.
-  engine             Either a native JIT or a bytecode interpreter.
+  engine             Either a native JIT or a bitcode interpreter.
 __EOD__
     exit(1);
 }
@@ -320,6 +320,9 @@ sub build_name_map {
             $NAME_MAP{$target} = [$target.'info',
                                   $target.'asmprinter', 
                                   $target.'codegen']
+        } elsif (defined $NAME_MAP{$target.'codegen'}) {
+          $NAME_MAP{$target} = [$target.'info',
+                                $target.'codegen']
         } else {
             $NAME_MAP{$target} = [$target.'info',
                                   $NAME_MAP{$target}[0]]
diff --git a/tools/llvm-diff/llvm-diff.cpp b/tools/llvm-diff/llvm-diff.cpp
index 16a990f..b932ccc 100644
--- a/tools/llvm-diff/llvm-diff.cpp
+++ b/tools/llvm-diff/llvm-diff.cpp
@@ -17,13 +17,12 @@
 #include "llvm/LLVMContext.h"
 #include "llvm/Module.h"
 #include "llvm/Type.h"
-#include "llvm/Assembly/Parser.h"
-#include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/IRReader.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/SourceMgr.h"
@@ -34,47 +33,30 @@
 
 using namespace llvm;
 
-/// Reads a module from a file.  If the filename ends in .ll, it is
-/// interpreted as an assembly file;  otherwise, it is interpreted as
-/// bitcode.  On error, messages are written to stderr and null is
-/// returned.
+/// Reads a module from a file.  On error, messages are written to stderr
+/// and null is returned.
 static Module *ReadModule(LLVMContext &Context, StringRef Name) {
-  // LLVM assembly path.
-  if (Name.endswith(".ll")) {
-    SMDiagnostic Diag;
-    Module *M = ParseAssemblyFile(Name, Diag, Context);
-    if (M) return M;
-
+  SMDiagnostic Diag;
+  Module *M = ParseIRFile(Name, Diag, Context);
+  if (!M)
     Diag.Print("llvmdiff", errs());
-    return 0;
-  }
-
-  // Bitcode path.
-  MemoryBuffer *Buffer = MemoryBuffer::getFile(Name);
-
-  // ParseBitcodeFile takes ownership of the buffer if it succeeds.
-  std::string Error;
-  Module *M = ParseBitcodeFile(Buffer, Context, &Error);
-  if (M) return M;
-
-  errs() << "error parsing " << Name << ": " << Error;
-  delete Buffer;
-  return 0;
+  return M;
 }
 
 namespace {
-struct DiffContext {
-  DiffContext(Value *L, Value *R)
-    : L(L), R(R), Differences(false), IsFunction(isa<Function>(L)) {}
-  Value *L;
-  Value *R;
-  bool Differences;
-  bool IsFunction;
-  DenseMap<Value*,unsigned> LNumbering;
-  DenseMap<Value*,unsigned> RNumbering;
-};
+  struct DiffContext {
+    DiffContext(Value *L, Value *R)
+      : L(L), R(R), Differences(false), IsFunction(isa<Function>(L)) {}
+    Value *L;
+    Value *R;
+    bool Differences;
+    bool IsFunction;
+    DenseMap<Value*,unsigned> LNumbering;
+    DenseMap<Value*,unsigned> RNumbering;
+  };
+}
 
-void ComputeNumbering(Function *F, DenseMap<Value*,unsigned> &Numbering) {
+static void ComputeNumbering(Function *F, DenseMap<Value*,unsigned> &Numbering){
   unsigned IN = 0;
 
   // Arguments get the first numbers.
@@ -98,6 +80,7 @@ void ComputeNumbering(Function *F, DenseMap<Value*,unsigned> &Numbering) {
   assert(!Numbering.empty() && "asked for numbering but numbering was no-op");
 }
 
+namespace {
 class DiffConsumer : public DifferenceEngine::Consumer {
 private:
   raw_ostream &out;
@@ -273,7 +256,7 @@ public:
   }
   
 };
-}
+} // end anonymous namespace
 
 static void diffGlobal(DifferenceEngine &Engine, Module *L, Module *R,
                        StringRef Name) {
@@ -292,14 +275,14 @@ static void diffGlobal(DifferenceEngine &Engine, Module *L, Module *R,
     errs() << "No function named @" << Name << " in right module\n";
 }
 
-cl::opt<std::string> LeftFilename(cl::Positional,
-                                  cl::desc("<first file>"),
-                                  cl::Required);
-cl::opt<std::string> RightFilename(cl::Positional,
-                                   cl::desc("<second file>"),
-                                   cl::Required);
-cl::list<std::string> GlobalsToCompare(cl::Positional,
-                                       cl::desc("<globals to compare>"));
+static cl::opt<std::string> LeftFilename(cl::Positional,
+                                         cl::desc("<first file>"),
+                                         cl::Required);
+static cl::opt<std::string> RightFilename(cl::Positional,
+                                          cl::desc("<second file>"),
+                                          cl::Required);
+static cl::list<std::string> GlobalsToCompare(cl::Positional,
+                                              cl::desc("<globals to compare>"));
 
 int main(int argc, char **argv) {
   cl::ParseCommandLineOptions(argc, argv);
diff --git a/tools/llvm-dis/llvm-dis.cpp b/tools/llvm-dis/llvm-dis.cpp
index 9d2d31d..b4977ce 100644
--- a/tools/llvm-dis/llvm-dis.cpp
+++ b/tools/llvm-dis/llvm-dis.cpp
@@ -26,8 +26,9 @@
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
 using namespace llvm;
 
 static cl::opt<std::string>
@@ -48,7 +49,7 @@ ShowAnnotations("show-annotations",
                 cl::desc("Add informational comments to the .ll file"));
 
 namespace {
-  
+
 class CommentWriter : public AssemblyAnnotationWriter {
 public:
   void emitFunctionAnnot(const Function *F,
@@ -58,32 +59,34 @@ public:
   }
   void printInfoComment(const Value &V, formatted_raw_ostream &OS) {
     if (V.getType()->isVoidTy()) return;
-      
+
     OS.PadToColumn(50);
     OS << "; [#uses=" << V.getNumUses() << ']';  // Output # uses
   }
 };
-  
+
 } // end anon namespace
 
 int main(int argc, char **argv) {
   // Print a stack trace if we signal out.
   sys::PrintStackTraceOnErrorSignal();
   PrettyStackTraceProgram X(argc, argv);
-  
+
   LLVMContext &Context = getGlobalContext();
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
-  
-  
+
+
   cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
 
   std::string ErrorMessage;
   std::auto_ptr<Module> M;
- 
-  if (MemoryBuffer *Buffer
-         = MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage)) {
-    M.reset(ParseBitcodeFile(Buffer, Context, &ErrorMessage));
-    delete Buffer;
+
+  {
+    OwningPtr<MemoryBuffer> BufferPtr;
+    if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr))
+      ErrorMessage = ec.message();
+    else
+      M.reset(ParseBitcodeFile(BufferPtr.get(), Context, &ErrorMessage));
   }
 
   if (M.get() == 0) {
@@ -94,11 +97,11 @@ int main(int argc, char **argv) {
       errs() << "bitcode didn't read correctly.\n";
     return 1;
   }
-  
+
   // Just use stdout.  We won't actually print anything on it.
   if (DontPrint)
     OutputFilename = "-";
-  
+
   if (OutputFilename.empty()) { // Unspecified output, infer it.
     if (InputFilename == "-") {
       OutputFilename = "-";
@@ -114,7 +117,7 @@ int main(int argc, char **argv) {
   }
 
   std::string ErrorInfo;
-  OwningPtr<tool_output_file> 
+  OwningPtr<tool_output_file>
   Out(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
                            raw_fd_ostream::F_Binary));
   if (!ErrorInfo.empty()) {
@@ -125,7 +128,7 @@ int main(int argc, char **argv) {
   OwningPtr<AssemblyAnnotationWriter> Annotator;
   if (ShowAnnotations)
     Annotator.reset(new CommentWriter());
-  
+
   // All that llvm-dis does is write the assembly to a file.
   if (!DontPrint)
     M->print(Out->os(), Annotator.get());
diff --git a/tools/llvm-extract/llvm-extract.cpp b/tools/llvm-extract/llvm-extract.cpp
index 91a59e5..8c2f43a 100644
--- a/tools/llvm-extract/llvm-extract.cpp
+++ b/tools/llvm-extract/llvm-extract.cpp
@@ -23,9 +23,10 @@
 #include "llvm/Support/IRReader.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include <memory>
 using namespace llvm;
 
@@ -102,13 +103,39 @@ int main(int argc, char **argv) {
   }
 
   // Materialize requisite global values.
-  for (size_t i = 0, e = GVs.size(); i != e; ++i) {
-    GlobalValue *GV = GVs[i];
-    if (GV->isMaterializable()) {
-      std::string ErrInfo;
-      if (GV->Materialize(&ErrInfo)) {
-        errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
-        return 1;
+  if (!DeleteFn)
+    for (size_t i = 0, e = GVs.size(); i != e; ++i) {
+      GlobalValue *GV = GVs[i];
+      if (GV->isMaterializable()) {
+        std::string ErrInfo;
+        if (GV->Materialize(&ErrInfo)) {
+          errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
+          return 1;
+        }
+      }
+    }
+  else {
+    // Deleting. Materialize every GV that's *not* in GVs.
+    SmallPtrSet<GlobalValue *, 8> GVSet(GVs.begin(), GVs.end());
+    for (Module::global_iterator I = M->global_begin(), E = M->global_end();
+         I != E; ++I) {
+      GlobalVariable *G = I;
+      if (!GVSet.count(G) && G->isMaterializable()) {
+        std::string ErrInfo;
+        if (G->Materialize(&ErrInfo)) {
+          errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
+          return 1;
+        }
+      }
+    }
+    for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I) {
+      Function *F = I;
+      if (!GVSet.count(F) && F->isMaterializable()) {
+        std::string ErrInfo;
+        if (F->Materialize(&ErrInfo)) {
+          errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
+          return 1;
+        }
       }
     }
   }
diff --git a/tools/llvm-ld/CMakeLists.txt b/tools/llvm-ld/CMakeLists.txt
index 2ae4a1d..370bcb4 100644
--- a/tools/llvm-ld/CMakeLists.txt
+++ b/tools/llvm-ld/CMakeLists.txt
@@ -4,3 +4,5 @@ add_llvm_tool(llvm-ld
   Optimize.cpp
   llvm-ld.cpp
   )
+
+add_dependencies(llvm-ld llvm-stub)
diff --git a/tools/llvm-ld/Optimize.cpp b/tools/llvm-ld/Optimize.cpp
index 3fb0079..ef4502b 100644
--- a/tools/llvm-ld/Optimize.cpp
+++ b/tools/llvm-ld/Optimize.cpp
@@ -16,7 +16,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/StandardPasses.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/DynamicLibrary.h"
+#include "llvm/Support/DynamicLibrary.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/PassNameParser.h"
diff --git a/tools/llvm-ld/llvm-ld.cpp b/tools/llvm-ld/llvm-ld.cpp
index 3bbea9d..cd6ce25 100644
--- a/tools/llvm-ld/llvm-ld.cpp
+++ b/tools/llvm-ld/llvm-ld.cpp
@@ -23,7 +23,7 @@
 #include "llvm/LinkAllVMCore.h"
 #include "llvm/Linker.h"
 #include "llvm/LLVMContext.h"
-#include "llvm/System/Program.h"
+#include "llvm/Support/Program.h"
 #include "llvm/Module.h"
 #include "llvm/PassManager.h"
 #include "llvm/Bitcode/ReaderWriter.h"
@@ -35,8 +35,8 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Signals.h"
 #include "llvm/Config/config.h"
 #include <memory>
 #include <cstring>
@@ -98,7 +98,7 @@ static cl::list<std::string> PostLinkOpts("post-link-opts",
 static cl::list<std::string> XLinker("Xlinker", cl::value_desc("option"),
   cl::desc("Pass options to the system linker"));
 
-// Compatibility options that llvm-ld ignores but are supported for 
+// Compatibility options that llvm-ld ignores but are supported for
 // compatibility with LD
 static cl::opt<std::string> CO3("soname", cl::Hidden,
   cl::desc("Compatibility option: ignored"));
@@ -112,13 +112,13 @@ static cl::opt<bool> CO5("eh-frame-hdr", cl::Hidden,
 static  cl::opt<std::string> CO6("h", cl::Hidden,
   cl::desc("Compatibility option: ignored"));
 
-static cl::opt<bool> CO7("start-group", cl::Hidden, 
+static cl::opt<bool> CO7("start-group", cl::Hidden,
   cl::desc("Compatibility option: ignored"));
 
-static cl::opt<bool> CO8("end-group", cl::Hidden, 
+static cl::opt<bool> CO8("end-group", cl::Hidden,
   cl::desc("Compatibility option: ignored"));
 
-static cl::opt<std::string> CO9("m", cl::Hidden, 
+static cl::opt<std::string> CO9("m", cl::Hidden,
   cl::desc("Compatibility option: ignored"));
 
 /// This is just for convenience so it doesn't have to be passed around
@@ -142,7 +142,7 @@ static void PrintAndExit(const std::string &Message, Module *M, int errcode = 1)
 }
 
 static void PrintCommand(const std::vector<const char*> &args) {
-  std::vector<const char*>::const_iterator I = args.begin(), E = args.end(); 
+  std::vector<const char*>::const_iterator I = args.begin(), E = args.end();
   for (; I != E; ++I)
     if (*I)
       errs() << "'" << *I << "'" << " ";
@@ -178,7 +178,7 @@ static char ** CopyEnv(char ** const envp) {
 
   // Allocate a new environment list.
   char **newenv = new char* [entries];
-  if ((newenv = new char* [entries]) == NULL)
+  if (newenv == NULL)
     return NULL;
 
   // Make a copy of the list.  Don't forget the NULL that ends the list.
@@ -384,7 +384,7 @@ static int GenerateNative(const std::string &OutputFilename,
     args.push_back("-framework");
     args.push_back(Frameworks[index]);
   }
-      
+
   // Now that "args" owns all the std::strings for the arguments, call the c_str
   // method to get the underlying string array.  We do this game so that the
   // std::string array is guaranteed to outlive the const char* array.
@@ -410,13 +410,13 @@ static int GenerateNative(const std::string &OutputFilename,
 static void EmitShellScript(char **argv, Module *M) {
   if (Verbose)
     errs() << "Emitting Shell Script\n";
-#if defined(_WIN32) || defined(__CYGWIN__)
+#if defined(_WIN32)
   // Windows doesn't support #!/bin/sh style shell scripts in .exe files.  To
   // support windows systems, we copy the llvm-stub.exe executable from the
   // build tree to the destination file.
-  std::string ErrMsg;  
-  sys::Path llvmstub = FindExecutable("llvm-stub.exe", argv[0],
-                                      (void *)(intptr_t)&Optimize);
+  std::string ErrMsg;
+  sys::Path llvmstub = PrependMainExecutablePath("llvm-stub", argv[0],
+                                                 (void *)(intptr_t)&Optimize);
   if (llvmstub.isEmpty())
     PrintAndExit("Could not find llvm-stub.exe executable!", M);
 
@@ -455,7 +455,7 @@ static void EmitShellScript(char **argv, Module *M) {
            E = LibPaths.end(); P != E; ++P) {
       FullLibraryPath = *P;
       FullLibraryPath.appendComponent("lib" + *i);
-      FullLibraryPath.appendSuffix(&(LTDL_SHLIB_EXT[1]));
+      FullLibraryPath.appendSuffix(sys::Path::GetDLLSuffix());
       if (!FullLibraryPath.isEmpty()) {
         if (!FullLibraryPath.isDynamicLibrary()) {
           // Not a native shared library; mark as invalid
@@ -513,9 +513,20 @@ int main(int argc, char **argv, char **envp) {
 
   LLVMContext &Context = getGlobalContext();
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
-  
+
+  // Initialize passes
+  PassRegistry &Registry = *PassRegistry::getPassRegistry();
+  initializeCore(Registry);
+  initializeScalarOpts(Registry);
+  initializeIPO(Registry);
+  initializeAnalysis(Registry);
+  initializeIPA(Registry);
+  initializeTransformUtils(Registry);
+  initializeInstCombine(Registry);
+  initializeTarget(Registry);
+
   // Initial global variable above for convenience printing of program name.
-  progname = sys::Path(argv[0]).getBasename();
+  progname = sys::path::stem(argv[0]);
 
   // Parse the command line options
   cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
@@ -527,11 +538,8 @@ int main(int argc, char **argv, char **envp) {
       OutputFilename = "a.exe";
 
     // If there is no suffix add an "exe" one.
-    sys::Path ExeFile( OutputFilename );
-    if (ExeFile.getSuffix() == "") {
-      ExeFile.appendSuffix("exe");
-      OutputFilename = ExeFile.str();
-    }
+    if (sys::path::extension(OutputFilename).empty())
+      OutputFilename.append(".exe");
   }
 #endif
 
@@ -653,8 +661,8 @@ int main(int argc, char **argv, char **envp) {
       sys::RemoveFileOnSignal(AssemblyFile);
 
       // Determine the locations of the llc and gcc programs.
-      sys::Path llc = FindExecutable("llc", argv[0],
-                                     (void *)(intptr_t)&Optimize);
+      sys::Path llc = PrependMainExecutablePath("llc", argv[0],
+                                                (void *)(intptr_t)&Optimize);
       if (llc.isEmpty())
         PrintAndExit("Failed to find llc", Composite.get());
 
@@ -680,8 +688,8 @@ int main(int argc, char **argv, char **envp) {
       sys::RemoveFileOnSignal(CFile);
 
       // Determine the locations of the llc and gcc programs.
-      sys::Path llc = FindExecutable("llc", argv[0],
-                                     (void *)(intptr_t)&Optimize);
+      sys::Path llc = PrependMainExecutablePath("llc", argv[0],
+                                                (void *)(intptr_t)&Optimize);
       if (llc.isEmpty())
         PrintAndExit("Failed to find llc", Composite.get());
 
@@ -694,7 +702,7 @@ int main(int argc, char **argv, char **envp) {
       if (GenerateCFile(CFile.str(), BitcodeOutputFilename, llc, ErrMsg))
         PrintAndExit(ErrMsg, Composite.get());
 
-      if (GenerateNative(OutputFilename, CFile.str(), 
+      if (GenerateNative(OutputFilename, CFile.str(),
                          NativeLinkItems, gcc, envp, ErrMsg))
         PrintAndExit(ErrMsg, Composite.get());
     } else {
diff --git a/tools/llvm-link/llvm-link.cpp b/tools/llvm-link/llvm-link.cpp
index e55d0de..3fb7ba4 100644
--- a/tools/llvm-link/llvm-link.cpp
+++ b/tools/llvm-link/llvm-link.cpp
@@ -20,11 +20,11 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Support/SystemUtils.h"
 #include "llvm/Support/IRReader.h"
-#include "llvm/System/Signals.h"
-#include "llvm/System/Path.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/Path.h"
 #include <memory>
 using namespace llvm;
 
diff --git a/tools/llvm-mc/Disassembler.cpp b/tools/llvm-mc/Disassembler.cpp
index 13080b4..c29d82a 100644
--- a/tools/llvm-mc/Disassembler.cpp
+++ b/tools/llvm-mc/Disassembler.cpp
@@ -24,6 +24,7 @@
 #include "llvm/Target/TargetRegistry.h"
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/Triple.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/MemoryObject.h"
 #include "llvm/Support/raw_ostream.h"
@@ -43,7 +44,7 @@ public:
   uint64_t getExtent() const { return Bytes.size(); }
 
   int readByte(uint64_t Addr, uint8_t *Byte) const {
-    if (Addr > getExtent())
+    if (Addr >= getExtent())
       return -1;
     *Byte = Bytes[Addr].first;
     return 0;
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index aef0a3d..2c22bed 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -23,6 +23,10 @@
 #include "llvm/Target/TargetAsmParser.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/SubtargetFeature.h" // FIXME.
+#include "llvm/Target/TargetAsmInfo.h"  // FIXME.
+#include "llvm/Target/TargetLowering.h"  // FIXME.
+#include "llvm/Target/TargetLoweringObjectFile.h"  // FIXME.
 #include "llvm/Target/TargetMachine.h"  // FIXME.
 #include "llvm/Target/TargetSelect.h"
 #include "llvm/ADT/OwningPtr.h"
@@ -33,9 +37,10 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
 #include "Disassembler.h"
 using namespace llvm;
 
@@ -64,6 +69,9 @@ static cl::opt<bool>
 RelaxAll("mc-relax-all", cl::desc("Relax all fixups"));
 
 static cl::opt<bool>
+NoExecStack("mc-no-exec-stack", cl::desc("File doesn't need an exec stack"));
+
+static cl::opt<bool>
 EnableLogging("enable-api-logging", cl::desc("Enable MC API logging"));
 
 enum OutputFileType {
@@ -95,6 +103,12 @@ static cl::opt<std::string>
 TripleName("triple", cl::desc("Target triple to assemble for, "
                               "see -version for available targets"));
 
+static cl::opt<std::string>
+MCPU("mcpu",
+     cl::desc("Target a specific cpu type (-mcpu=help for details)"),
+     cl::value_desc("cpu-name"),
+     cl::init(""));
+
 static cl::opt<bool>
 NoInitialTextSection("n", cl::desc(
                    "Don't assume assembly file starts in the text section"));
@@ -157,17 +171,12 @@ static tool_output_file *GetOutputStream() {
 }
 
 static int AsLexInput(const char *ProgName) {
-  std::string ErrorMessage;
-  MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
-                                                      &ErrorMessage);
-  if (Buffer == 0) {
-    errs() << ProgName << ": ";
-    if (ErrorMessage.size())
-      errs() << ErrorMessage << "\n";
-    else
-      errs() << "input file didn't read correctly.\n";
+  OwningPtr<MemoryBuffer> BufferPtr;
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr)) {
+    errs() << ProgName << ": " << ec.message() << '\n';
     return 1;
   }
+  MemoryBuffer *Buffer = BufferPtr.take();
 
   SourceMgr SrcMgr;
   
@@ -194,7 +203,9 @@ static int AsLexInput(const char *ProgName) {
 
   bool Error = false;
   while (Lexer.Lex().isNot(AsmToken::Eof)) {
-    switch (Lexer.getKind()) {
+    AsmToken Tok = Lexer.getTok();
+
+    switch (Tok.getKind()) {
     default:
       SrcMgr.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
       Error = true;
@@ -203,45 +214,63 @@ static int AsLexInput(const char *ProgName) {
       Error = true; // error already printed.
       break;
     case AsmToken::Identifier:
-      Out->os() << "identifier: " << Lexer.getTok().getString() << '\n';
-      break;
-    case AsmToken::String:
-      Out->os() << "string: " << Lexer.getTok().getString() << '\n';
+      Out->os() << "identifier: " << Lexer.getTok().getString();
       break;
     case AsmToken::Integer:
-      Out->os() << "int: " << Lexer.getTok().getString() << '\n';
+      Out->os() << "int: " << Lexer.getTok().getString();
+      break;
+    case AsmToken::Real:
+      Out->os() << "real: " << Lexer.getTok().getString();
+      break;
+    case AsmToken::Register:
+      Out->os() << "register: " << Lexer.getTok().getRegVal();
+      break;
+    case AsmToken::String:
+      Out->os() << "string: " << Lexer.getTok().getString();
       break;
 
-    case AsmToken::Amp:            Out->os() << "Amp\n"; break;
-    case AsmToken::AmpAmp:         Out->os() << "AmpAmp\n"; break;
-    case AsmToken::Caret:          Out->os() << "Caret\n"; break;
-    case AsmToken::Colon:          Out->os() << "Colon\n"; break;
-    case AsmToken::Comma:          Out->os() << "Comma\n"; break;
-    case AsmToken::Dollar:         Out->os() << "Dollar\n"; break;
-    case AsmToken::EndOfStatement: Out->os() << "EndOfStatement\n"; break;
-    case AsmToken::Eof:            Out->os() << "Eof\n"; break;
-    case AsmToken::Equal:          Out->os() << "Equal\n"; break;
-    case AsmToken::EqualEqual:     Out->os() << "EqualEqual\n"; break;
-    case AsmToken::Exclaim:        Out->os() << "Exclaim\n"; break;
-    case AsmToken::ExclaimEqual:   Out->os() << "ExclaimEqual\n"; break;
-    case AsmToken::Greater:        Out->os() << "Greater\n"; break;
-    case AsmToken::GreaterEqual:   Out->os() << "GreaterEqual\n"; break;
-    case AsmToken::GreaterGreater: Out->os() << "GreaterGreater\n"; break;
-    case AsmToken::LParen:         Out->os() << "LParen\n"; break;
-    case AsmToken::Less:           Out->os() << "Less\n"; break;
-    case AsmToken::LessEqual:      Out->os() << "LessEqual\n"; break;
-    case AsmToken::LessGreater:    Out->os() << "LessGreater\n"; break;
-    case AsmToken::LessLess:       Out->os() << "LessLess\n"; break;
-    case AsmToken::Minus:          Out->os() << "Minus\n"; break;
-    case AsmToken::Percent:        Out->os() << "Percent\n"; break;
-    case AsmToken::Pipe:           Out->os() << "Pipe\n"; break;
-    case AsmToken::PipePipe:       Out->os() << "PipePipe\n"; break;
-    case AsmToken::Plus:           Out->os() << "Plus\n"; break;
-    case AsmToken::RParen:         Out->os() << "RParen\n"; break;
-    case AsmToken::Slash:          Out->os() << "Slash\n"; break;
-    case AsmToken::Star:           Out->os() << "Star\n"; break;
-    case AsmToken::Tilde:          Out->os() << "Tilde\n"; break;
+    case AsmToken::Amp:            Out->os() << "Amp"; break;
+    case AsmToken::AmpAmp:         Out->os() << "AmpAmp"; break;
+    case AsmToken::At:             Out->os() << "At"; break;
+    case AsmToken::Caret:          Out->os() << "Caret"; break;
+    case AsmToken::Colon:          Out->os() << "Colon"; break;
+    case AsmToken::Comma:          Out->os() << "Comma"; break;
+    case AsmToken::Dollar:         Out->os() << "Dollar"; break;
+    case AsmToken::Dot:            Out->os() << "Dot"; break;
+    case AsmToken::EndOfStatement: Out->os() << "EndOfStatement"; break;
+    case AsmToken::Eof:            Out->os() << "Eof"; break;
+    case AsmToken::Equal:          Out->os() << "Equal"; break;
+    case AsmToken::EqualEqual:     Out->os() << "EqualEqual"; break;
+    case AsmToken::Exclaim:        Out->os() << "Exclaim"; break;
+    case AsmToken::ExclaimEqual:   Out->os() << "ExclaimEqual"; break;
+    case AsmToken::Greater:        Out->os() << "Greater"; break;
+    case AsmToken::GreaterEqual:   Out->os() << "GreaterEqual"; break;
+    case AsmToken::GreaterGreater: Out->os() << "GreaterGreater"; break;
+    case AsmToken::Hash:           Out->os() << "Hash"; break;
+    case AsmToken::LBrac:          Out->os() << "LBrac"; break;
+    case AsmToken::LCurly:         Out->os() << "LCurly"; break;
+    case AsmToken::LParen:         Out->os() << "LParen"; break;
+    case AsmToken::Less:           Out->os() << "Less"; break;
+    case AsmToken::LessEqual:      Out->os() << "LessEqual"; break;
+    case AsmToken::LessGreater:    Out->os() << "LessGreater"; break;
+    case AsmToken::LessLess:       Out->os() << "LessLess"; break;
+    case AsmToken::Minus:          Out->os() << "Minus"; break;
+    case AsmToken::Percent:        Out->os() << "Percent"; break;
+    case AsmToken::Pipe:           Out->os() << "Pipe"; break;
+    case AsmToken::PipePipe:       Out->os() << "PipePipe"; break;
+    case AsmToken::Plus:           Out->os() << "Plus"; break;
+    case AsmToken::RBrac:          Out->os() << "RBrac"; break;
+    case AsmToken::RCurly:         Out->os() << "RCurly"; break;
+    case AsmToken::RParen:         Out->os() << "RParen"; break;
+    case AsmToken::Slash:          Out->os() << "Slash"; break;
+    case AsmToken::Star:           Out->os() << "Star"; break;
+    case AsmToken::Tilde:          Out->os() << "Tilde"; break;
     }
+
+    // Print the token string.
+    Out->os() << " (\"";
+    Out->os().write_escaped(Tok.getString());
+    Out->os() << "\")\n";
   }
 
   // Keep output if no errors.
@@ -255,16 +284,12 @@ static int AssembleInput(const char *ProgName) {
   if (!TheTarget)
     return 1;
 
-  std::string Error;
-  MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename, &Error);
-  if (Buffer == 0) {
-    errs() << ProgName << ": ";
-    if (Error.size())
-      errs() << Error << "\n";
-    else
-      errs() << "input file didn't read correctly.\n";
+  OwningPtr<MemoryBuffer> BufferPtr;
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr)) {
+    errs() << ProgName << ": " << ec.message() << '\n';
     return 1;
   }
+  MemoryBuffer *Buffer = BufferPtr.take();
   
   SourceMgr SrcMgr;
   
@@ -279,10 +304,20 @@ static int AssembleInput(const char *ProgName) {
   llvm::OwningPtr<MCAsmInfo> MAI(TheTarget->createAsmInfo(TripleName));
   assert(MAI && "Unable to create target asm info!");
   
-  MCContext Ctx(*MAI);
+  // Package up features to be passed to target/subtarget
+  std::string FeaturesStr;
+  if (MCPU.size()) {
+    SubtargetFeatures Features;
+    Features.setCPU(MCPU);
+    FeaturesStr = Features.getString();
+  }
 
   // FIXME: We shouldn't need to do this (and link in codegen).
-  OwningPtr<TargetMachine> TM(TheTarget->createTargetMachine(TripleName, ""));
+  //        When we split this out, we should do it in a way that makes
+  //        it straightforward to switch subtargets on the fly (.e.g,
+  //        the .cpu and .code16 directives).
+  OwningPtr<TargetMachine> TM(TheTarget->createTargetMachine(TripleName,
+                                                             FeaturesStr));
 
   if (!TM) {
     errs() << ProgName << ": error: could not create target for triple '"
@@ -290,6 +325,9 @@ static int AssembleInput(const char *ProgName) {
     return 1;
   }
 
+  const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
+  MCContext Ctx(*MAI, tai);
+
   OwningPtr<tool_output_file> Out(GetOutputStream());
   if (!Out)
     return 1;
@@ -297,15 +335,23 @@ static int AssembleInput(const char *ProgName) {
   formatted_raw_ostream FOS(Out->os());
   OwningPtr<MCStreamer> Str;
 
+  const TargetLoweringObjectFile &TLOF =
+    TM->getTargetLowering()->getObjFileLowering();
+  const_cast<TargetLoweringObjectFile&>(TLOF).Initialize(Ctx, *TM);
+
+  // FIXME: There is a bit of code duplication with addPassesToEmitFile.
   if (FileType == OFT_AssemblyFile) {
     MCInstPrinter *IP =
       TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI);
     MCCodeEmitter *CE = 0;
-    if (ShowEncoding)
+    TargetAsmBackend *TAB = 0;
+    if (ShowEncoding) {
       CE = TheTarget->createCodeEmitter(*TM, Ctx);
-    Str.reset(createAsmStreamer(Ctx, FOS,
-                                TM->getTargetData()->isLittleEndian(),
-                                /*asmverbose*/true, IP, CE, ShowInst));
+      TAB = TheTarget->createAsmBackend(TripleName);
+    }
+    Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/true,
+                                           /*useLoc*/ true, IP, CE, TAB,
+                                           ShowInst));
   } else if (FileType == OFT_Null) {
     Str.reset(createNullStreamer(Ctx));
   } else {
@@ -313,7 +359,8 @@ static int AssembleInput(const char *ProgName) {
     MCCodeEmitter *CE = TheTarget->createCodeEmitter(*TM, Ctx);
     TargetAsmBackend *TAB = TheTarget->createAsmBackend(TripleName);
     Str.reset(TheTarget->createObjectStreamer(TripleName, Ctx, *TAB,
-                                              FOS, CE, RelaxAll));
+                                              FOS, CE, RelaxAll,
+                                              NoExecStack));
   }
 
   if (EnableLogging) {
@@ -344,18 +391,10 @@ static int DisassembleInput(const char *ProgName, bool Enhanced) {
   const Target *TheTarget = GetTarget(ProgName);
   if (!TheTarget)
     return 0;
-  
-  std::string ErrorMessage;
-  
-  MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
-                                                      &ErrorMessage);
-
-  if (Buffer == 0) {
-    errs() << ProgName << ": ";
-    if (ErrorMessage.size())
-      errs() << ErrorMessage << "\n";
-    else
-      errs() << "input file didn't read correctly.\n";
+
+  OwningPtr<MemoryBuffer> Buffer;
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, Buffer)) {
+    errs() << ProgName << ": " << ec.message() << '\n';
     return 1;
   }
   
@@ -365,9 +404,11 @@ static int DisassembleInput(const char *ProgName, bool Enhanced) {
 
   int Res;
   if (Enhanced)
-    Res = Disassembler::disassembleEnhanced(TripleName, *Buffer, Out->os());
+    Res =
+      Disassembler::disassembleEnhanced(TripleName, *Buffer.take(), Out->os());
   else
-    Res = Disassembler::disassemble(*TheTarget, TripleName, *Buffer, Out->os());
+    Res = Disassembler::disassemble(*TheTarget, TripleName,
+                                    *Buffer.take(), Out->os());
 
   // Keep output if no errors.
   if (Res == 0) Out->keep();
diff --git a/tools/llvm-nm/CMakeLists.txt b/tools/llvm-nm/CMakeLists.txt
index 45cf1b6..b6cd80b 100644
--- a/tools/llvm-nm/CMakeLists.txt
+++ b/tools/llvm-nm/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_LINK_COMPONENTS archive bitreader)
+set(LLVM_LINK_COMPONENTS archive bitreader object)
 
 add_llvm_tool(llvm-nm
   llvm-nm.cpp
diff --git a/tools/llvm-nm/Makefile b/tools/llvm-nm/Makefile
index ecf5f8c..6bb4cd4 100644
--- a/tools/llvm-nm/Makefile
+++ b/tools/llvm-nm/Makefile
@@ -9,7 +9,7 @@
 LEVEL = ../..
 
 TOOLNAME = llvm-nm
-LINK_COMPONENTS = archive bitreader
+LINK_COMPONENTS = archive bitreader object
 
 # This tool has no plugins, optimize startup time.
 TOOL_NO_EXPORTS = 1
diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
index daa8571..1afa503 100644
--- a/tools/llvm-nm/llvm-nm.cpp
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -20,17 +20,23 @@
 #include "llvm/Module.h"
 #include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/Bitcode/Archive.h"
+#include "llvm/Object/ObjectFile.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/system_error.h"
 #include <algorithm>
 #include <cctype>
 #include <cerrno>
 #include <cstring>
+#include <vector>
 using namespace llvm;
+using namespace object;
 
 namespace {
   enum OutputFormatTy { bsd, sysv, posix };
@@ -64,11 +70,148 @@ namespace {
   cl::opt<bool> BSDFormat("B", cl::desc("Alias for --format=bsd"));
   cl::opt<bool> POSIXFormat("P", cl::desc("Alias for --format=posix"));
 
+  cl::opt<bool> PrintFileName("print-file-name",
+    cl::desc("Precede each symbol with the object file it came from"));
+
+  cl::alias PrintFileNameA("A", cl::desc("Alias for --print-file-name"),
+                                cl::aliasopt(PrintFileName));
+  cl::alias PrintFileNameo("o", cl::desc("Alias for --print-file-name"),
+                                cl::aliasopt(PrintFileName));
+
+  cl::opt<bool> DebugSyms("debug-syms",
+    cl::desc("Show all symbols, even debugger only"));
+  cl::alias DebugSymsa("a", cl::desc("Alias for --debug-syms"),
+                            cl::aliasopt(DebugSyms));
+
+  cl::opt<bool> NumericSort("numeric-sort",
+    cl::desc("Sort symbols by address"));
+  cl::alias NumericSortn("n", cl::desc("Alias for --numeric-sort"),
+                              cl::aliasopt(NumericSort));
+  cl::alias NumericSortv("v", cl::desc("Alias for --numeric-sort"),
+                              cl::aliasopt(NumericSort));
+
+  cl::opt<bool> NoSort("no-sort",
+    cl::desc("Show symbols in order encountered"));
+  cl::alias NoSortp("p", cl::desc("Alias for --no-sort"),
+                         cl::aliasopt(NoSort));
+
+  cl::opt<bool> PrintSize("print-size",
+    cl::desc("Show symbol size instead of address"));
+  cl::alias PrintSizeS("S", cl::desc("Alias for --print-size"),
+                            cl::aliasopt(PrintSize));
+
+  cl::opt<bool> SizeSort("size-sort", cl::desc("Sort symbols by size"));
+
+  bool PrintAddress = true;
+
   bool MultipleFiles = false;
 
   std::string ToolName;
 }
 
+namespace {
+  struct NMSymbol {
+    uint64_t  Address;
+    uint64_t  Size;
+    char      TypeChar;
+    StringRef Name;
+  };
+
+  static bool CompareSymbolAddress(const NMSymbol &a, const NMSymbol &b) {
+    if (a.Address < b.Address)
+      return true;
+    else if (a.Address == b.Address && a.Name < b.Name)
+      return true;
+    else
+      return false;
+
+  }
+
+  static bool CompareSymbolSize(const NMSymbol &a, const NMSymbol &b) {
+    if (a.Size < b.Size)
+      return true;
+    else if (a.Size == b.Size && a.Name < b.Name)
+      return true;
+    else
+      return false;
+  }
+
+  static bool CompareSymbolName(const NMSymbol &a, const NMSymbol &b) {
+    return a.Name < b.Name;
+  }
+
+  StringRef CurrentFilename;
+  typedef std::vector<NMSymbol> SymbolListT;
+  SymbolListT SymbolList;
+}
+
+static void SortAndPrintSymbolList() {
+  if (!NoSort) {
+    if (NumericSort)
+      std::sort(SymbolList.begin(), SymbolList.end(), CompareSymbolAddress);
+    else if (SizeSort)
+      std::sort(SymbolList.begin(), SymbolList.end(), CompareSymbolSize);
+    else
+      std::sort(SymbolList.begin(), SymbolList.end(), CompareSymbolName);
+  }
+
+  if (OutputFormat == posix && MultipleFiles) {
+    outs() << '\n' << CurrentFilename << ":\n";
+  } else if (OutputFormat == bsd && MultipleFiles) {
+    outs() << "\n" << CurrentFilename << ":\n";
+  } else if (OutputFormat == sysv) {
+    outs() << "\n\nSymbols from " << CurrentFilename << ":\n\n"
+           << "Name                  Value   Class        Type"
+           << "         Size   Line  Section\n";
+  }
+
+  for (SymbolListT::iterator i = SymbolList.begin(),
+                             e = SymbolList.end(); i != e; ++i) {
+    if ((i->TypeChar != 'U') && UndefinedOnly)
+      continue;
+    if ((i->TypeChar == 'U') && DefinedOnly)
+      continue;
+    if (SizeSort && !PrintAddress && i->Size == UnknownAddressOrSize)
+      continue;
+
+    char SymbolAddrStr[10] = "";
+    char SymbolSizeStr[10] = "";
+
+    if (OutputFormat == sysv || i->Address == object::UnknownAddressOrSize)
+      strcpy(SymbolAddrStr, "        ");
+    if (OutputFormat == sysv)
+      strcpy(SymbolSizeStr, "        ");
+
+    if (i->Address != object::UnknownAddressOrSize)
+      format("%08x", i->Address).print(SymbolAddrStr, sizeof(SymbolAddrStr));
+    if (i->Size != object::UnknownAddressOrSize)
+      format("%08x", i->Size).print(SymbolSizeStr, sizeof(SymbolSizeStr));
+
+    if (OutputFormat == posix) {
+      outs() << i->Name << " " << i->TypeChar << " "
+             << SymbolAddrStr << SymbolSizeStr << "\n";
+    } else if (OutputFormat == bsd) {
+      if (PrintAddress)
+        outs() << SymbolAddrStr << ' ';
+      if (PrintSize) {
+        outs() << SymbolSizeStr;
+        if (i->Size != object::UnknownAddressOrSize)
+          outs() << ' ';
+      }
+      outs() << i->TypeChar << " " << i->Name  << "\n";
+    } else if (OutputFormat == sysv) {
+      std::string PaddedName (i->Name);
+      while (PaddedName.length () < 20)
+        PaddedName += " ";
+      outs() << PaddedName << "|" << SymbolAddrStr << "|   "
+             << i->TypeChar
+             << "  |                  |" << SymbolSizeStr << "|     |\n";
+    }
+  }
+
+  SymbolList.clear();
+}
+
 static char TypeCharForSymbol(GlobalValue &GV) {
   if (GV.isDeclaration())                                  return 'U';
   if (GV.hasLinkOnceLinkage())                             return 'C';
@@ -94,57 +237,62 @@ static void DumpSymbolNameForGlobalValue(GlobalValue &GV) {
       GV.hasLinkerPrivateWeakDefAutoLinkage() ||
       GV.hasAvailableExternallyLinkage())
     return;
-
-  const std::string SymbolAddrStr = "        "; // Not used yet...
   char TypeChar = TypeCharForSymbol(GV);
-  if ((TypeChar != 'U') && UndefinedOnly)
-    return;
-  if ((TypeChar == 'U') && DefinedOnly)
-    return;
   if (GV.hasLocalLinkage () && ExternalOnly)
     return;
-  if (OutputFormat == posix) {
-    outs() << GV.getName () << " " << TypeCharForSymbol(GV) << " "
-           << SymbolAddrStr << "\n";
-  } else if (OutputFormat == bsd) {
-    outs() << SymbolAddrStr << " " << TypeCharForSymbol(GV) << " "
-           << GV.getName () << "\n";
-  } else if (OutputFormat == sysv) {
-    std::string PaddedName (GV.getName ());
-    while (PaddedName.length () < 20)
-      PaddedName += " ";
-    outs() << PaddedName << "|" << SymbolAddrStr << "|   "
-           << TypeCharForSymbol(GV)
-           << "  |                  |      |     |\n";
-  }
+
+  NMSymbol s;
+  s.Address = object::UnknownAddressOrSize;
+  s.Size = object::UnknownAddressOrSize;
+  s.TypeChar = TypeChar;
+  s.Name     = GV.getName();
+  SymbolList.push_back(s);
 }
 
 static void DumpSymbolNamesFromModule(Module *M) {
-  const std::string &Filename = M->getModuleIdentifier ();
-  if (OutputFormat == posix && MultipleFiles) {
-    outs() << Filename << ":\n";
-  } else if (OutputFormat == bsd && MultipleFiles) {
-    outs() << "\n" << Filename << ":\n";
-  } else if (OutputFormat == sysv) {
-    outs() << "\n\nSymbols from " << Filename << ":\n\n"
-           << "Name                  Value   Class        Type"
-           << "         Size   Line  Section\n";
-  }
+  CurrentFilename = M->getModuleIdentifier();
   std::for_each (M->begin(), M->end(), DumpSymbolNameForGlobalValue);
   std::for_each (M->global_begin(), M->global_end(),
                  DumpSymbolNameForGlobalValue);
   std::for_each (M->alias_begin(), M->alias_end(),
                  DumpSymbolNameForGlobalValue);
+
+  SortAndPrintSymbolList();
+}
+
+static void DumpSymbolNamesFromObject(ObjectFile *obj) {
+  for (ObjectFile::symbol_iterator i = obj->begin_symbols(),
+                                   e = obj->end_symbols(); i != e; ++i) {
+    if (!DebugSyms && i->isInternal())
+      continue;
+    NMSymbol s;
+    s.Size = object::UnknownAddressOrSize;
+    s.Address = object::UnknownAddressOrSize;
+    if (PrintSize || SizeSort)
+      s.Size = i->getSize();
+    if (PrintAddress)
+      s.Address = i->getAddress();
+    s.TypeChar = i->getNMTypeChar();
+    s.Name     = i->getName();
+    SymbolList.push_back(s);
+  }
+
+  CurrentFilename = obj->getFilename();
+  SortAndPrintSymbolList();
 }
 
 static void DumpSymbolNamesFromFile(std::string &Filename) {
   LLVMContext &Context = getGlobalContext();
   std::string ErrorMessage;
   sys::Path aPath(Filename);
+  bool exists;
+  if (sys::fs::exists(aPath.str(), exists) || !exists)
+    errs() << ToolName << ": '" << Filename << "': " << "No such file\n";
   // Note: Currently we do not support reading an archive from stdin.
   if (Filename == "-" || aPath.isBitcodeFile()) {
-    std::auto_ptr<MemoryBuffer> Buffer(
-                   MemoryBuffer::getFileOrSTDIN(Filename, &ErrorMessage));
+    OwningPtr<MemoryBuffer> Buffer;
+    if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buffer))
+      ErrorMessage = ec.message();
     Module *Result = 0;
     if (Buffer.get())
       Result = ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage);
@@ -168,6 +316,14 @@ static void DumpSymbolNamesFromFile(std::string &Filename) {
     }
     MultipleFiles = true;
     std::for_each (Modules.begin(), Modules.end(), DumpSymbolNamesFromModule);
+  } else if (aPath.isObjectFile()) {
+    std::auto_ptr<ObjectFile> obj(ObjectFile::createObjectFile(aPath.str()));
+    if (!obj.get()) {
+      errs() << ToolName << ": " << Filename << ": "
+             << "Failed to open object file\n";
+      return;
+    }
+    DumpSymbolNamesFromObject(obj.get());
   } else {
     errs() << ToolName << ": " << Filename << ": "
            << "unrecognizable file type\n";
@@ -187,6 +343,12 @@ int main(int argc, char **argv) {
   if (BSDFormat) OutputFormat = bsd;
   if (POSIXFormat) OutputFormat = posix;
 
+  // The relative order of these is important. If you pass --size-sort it should
+  // only print out the size. However, if you pass -S --size-sort, it should
+  // print out both the size and address.
+  if (SizeSort && !PrintSize) PrintAddress = false;
+  if (OutputFormat == sysv || SizeSort) PrintSize = true;
+
   switch (InputFilenames.size()) {
   case 0: InputFilenames.push_back("-");
   case 1: break;
diff --git a/tools/llvm-objdump/CMakeLists.txt b/tools/llvm-objdump/CMakeLists.txt
new file mode 100644
index 0000000..4181b32
--- /dev/null
+++ b/tools/llvm-objdump/CMakeLists.txt
@@ -0,0 +1,11 @@
+set(LLVM_LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
+  MC
+  MCParser
+  MCDisassembler
+  Object
+  )
+
+add_llvm_tool(llvm-objdump
+  llvm-objdump.cpp
+  )
diff --git a/tools/llvm-objdump/Makefile b/tools/llvm-objdump/Makefile
new file mode 100644
index 0000000..4d7cd34
--- /dev/null
+++ b/tools/llvm-objdump/Makefile
@@ -0,0 +1,17 @@
+##===- tools/llvm-objdump/Makefile -------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../..
+
+TOOLNAME = llvm-objdump
+LINK_COMPONENTS = $(TARGETS_TO_BUILD) MC MCParser MCDisassembler Object
+
+# This tool has no plugins, optimize startup time.
+TOOL_NO_EXPORTS = 1
+
+include $(LEVEL)/Makefile.common
diff --git a/tools/llvm-objdump/llvm-objdump.cpp b/tools/llvm-objdump/llvm-objdump.cpp
new file mode 100644
index 0000000..1fef8b6
--- /dev/null
+++ b/tools/llvm-objdump/llvm-objdump.cpp
@@ -0,0 +1,255 @@
+//===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This program is a utility that works like binutils "objdump", that is, it
+// dumps out a plethora of information about an object file depending on the
+// flags.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/ObjectFile.h"
+// This config must be included before llvm-config.h.
+#include "llvm/Config/config.h"
+#include "../../lib/MC/MCDisassembler/EDDisassembler.h"
+#include "../../lib/MC/MCDisassembler/EDInst.h"
+#include "../../lib/MC/MCDisassembler/EDOperand.h"
+#include "../../lib/MC/MCDisassembler/EDToken.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCDisassembler.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetSelect.h"
+#include <algorithm>
+#include <cctype>
+#include <cerrno>
+#include <cstring>
+#include <vector>
+using namespace llvm;
+using namespace object;
+
+namespace {
+  cl::list<std::string>
+  InputFilenames(cl::Positional, cl::desc("<input object files>"),
+                 cl::ZeroOrMore);
+
+  cl::opt<bool>
+  Disassemble("disassemble",
+    cl::desc("Display assembler mnemonics for the machine instructions"));
+  cl::alias
+  Disassembled("d", cl::desc("Alias for --disassemble"),
+               cl::aliasopt(Disassemble));
+
+  cl::opt<std::string>
+  TripleName("triple", cl::desc("Target triple to disassemble for, "
+                                "see -version for available targets"));
+
+  cl::opt<std::string>
+  ArchName("arch", cl::desc("Target arch to disassemble for, "
+                            "see -version for available targets"));
+
+  StringRef ToolName;
+}
+
+static const Target *GetTarget(const ObjectFile *Obj = NULL) {
+  // Figure out the target triple.
+  llvm::Triple TT("unknown-unknown-unknown");
+  if (TripleName.empty()) {
+    if (Obj)
+      TT.setArch(Triple::ArchType(Obj->getArch()));
+  } else
+    TT.setTriple(Triple::normalize(TripleName));
+
+  if (!ArchName.empty())
+    TT.setArchName(ArchName);
+
+  TripleName = TT.str();
+
+  // Get the target specific parser.
+  std::string Error;
+  const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+  if (TheTarget)
+    return TheTarget;
+
+  errs() << ToolName << ": error: unable to get target for '" << TripleName
+         << "', see --version and --triple.\n";
+  return 0;
+}
+
+namespace {
+class StringRefMemoryObject : public MemoryObject {
+private:
+  StringRef Bytes;
+public:
+  StringRefMemoryObject(StringRef bytes) : Bytes(bytes) {}
+
+  uint64_t getBase() const { return 0; }
+  uint64_t getExtent() const { return Bytes.size(); }
+
+  int readByte(uint64_t Addr, uint8_t *Byte) const {
+    if (Addr > getExtent())
+      return -1;
+    *Byte = Bytes[Addr];
+    return 0;
+  }
+};
+}
+
+static void DumpBytes(StringRef bytes) {
+  static char hex_rep[] = "0123456789abcdef";
+  // FIXME: The real way to do this is to figure out the longest instruction
+  //        and align to that size before printing. I'll fix this when I get
+  //        around to outputting relocations.
+  // 15 is the longest x86 instruction
+  // 3 is for the hex rep of a byte + a space.
+  // 1 is for the null terminator.
+  enum { OutputSize = (15 * 3) + 1 };
+  char output[OutputSize];
+
+  assert(bytes.size() <= 15
+    && "DumpBytes only supports instructions of up to 15 bytes");
+  memset(output, ' ', sizeof(output));
+  unsigned index = 0;
+  for (StringRef::iterator i = bytes.begin(),
+                           e = bytes.end(); i != e; ++i) {
+    output[index] = hex_rep[(*i & 0xF0) >> 4];
+    output[index + 1] = hex_rep[*i & 0xF];
+    index += 3;
+  }
+
+  output[sizeof(output) - 1] = 0;
+  outs() << output;
+}
+
+static void DisassembleInput(const StringRef &Filename) {
+  OwningPtr<MemoryBuffer> Buff;
+
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
+    errs() << ToolName << ": " << Filename << ": " << ec.message() << "\n";
+    return;
+  }
+
+  OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
+
+  const Target *TheTarget = GetTarget(Obj.get());
+  if (!TheTarget) {
+    // GetTarget prints out stuff.
+    return;
+  }
+
+  outs() << '\n';
+  outs() << Filename
+         << ":\tfile format " << Obj->getFileFormatName() << "\n\n\n";
+
+  for (ObjectFile::section_iterator i = Obj->begin_sections(),
+                                    e = Obj->end_sections();
+                                    i != e; ++i) {
+    if (!i->isText())
+      continue;
+    outs() << "Disassembly of section " << i->getName() << ":\n\n";
+
+    // Set up disassembler.
+    OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createAsmInfo(TripleName));
+
+    if (!AsmInfo) {
+      errs() << "error: no assembly info for target " << TripleName << "\n";
+      return;
+    }
+
+    OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler());
+    if (!DisAsm) {
+      errs() << "error: no disassembler for target " << TripleName << "\n";
+      return;
+    }
+
+    int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+    OwningPtr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
+                                  AsmPrinterVariant, *AsmInfo));
+    if (!IP) {
+      errs() << "error: no instruction printer for target " << TripleName << '\n';
+      return;
+    }
+
+    StringRef Bytes = i->getContents();
+    StringRefMemoryObject memoryObject(Bytes);
+    uint64_t Size;
+    uint64_t Index;
+
+    for (Index = 0; Index < Bytes.size(); Index += Size) {
+      MCInst Inst;
+
+#     ifndef NDEBUG
+      raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
+#     else
+      raw_ostream &DebugOut = nulls();
+#     endif
+
+      if (DisAsm->getInstruction(Inst, Size, memoryObject, Index, DebugOut)) {
+        outs() << format("%8x:\t", i->getAddress() + Index);
+        DumpBytes(StringRef(Bytes.data() + Index, Size));
+        IP->printInst(&Inst, outs());
+        outs() << "\n";
+      } else {
+        errs() << ToolName << ": warning: invalid instruction encoding\n";
+        if (Size == 0)
+          Size = 1; // skip illegible bytes
+      }
+    }
+  }
+}
+
+int main(int argc, char **argv) {
+  // Print a stack trace if we signal out.
+  sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+
+  // Initialize targets and assembly printers/parsers.
+  llvm::InitializeAllTargetInfos();
+  // FIXME: We shouldn't need to initialize the Target(Machine)s.
+  llvm::InitializeAllTargets();
+  llvm::InitializeAllAsmPrinters();
+  llvm::InitializeAllAsmParsers();
+  llvm::InitializeAllDisassemblers();
+
+  cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n");
+  TripleName = Triple::normalize(TripleName);
+
+  ToolName = argv[0];
+
+  // Defaults to a.out if no filenames specified.
+  if (InputFilenames.size() == 0)
+    InputFilenames.push_back("a.out");
+
+  // -d is the only flag that is currently implemented, so just print help if
+  // it is not set.
+  if (!Disassemble) {
+    cl::PrintHelpMessage();
+    return 2;
+  }
+
+  std::for_each(InputFilenames.begin(), InputFilenames.end(),
+                DisassembleInput);
+
+  return 0;
+}
diff --git a/tools/llvm-prof/llvm-prof.cpp b/tools/llvm-prof/llvm-prof.cpp
index 1c63d97..9d0b468 100644
--- a/tools/llvm-prof/llvm-prof.cpp
+++ b/tools/llvm-prof/llvm-prof.cpp
@@ -29,7 +29,8 @@
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/Format.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
 #include <algorithm>
 #include <iomanip>
 #include <map>
@@ -263,12 +264,13 @@ int main(int argc, char **argv) {
 
   // Read in the bitcode file...
   std::string ErrorMessage;
+  OwningPtr<MemoryBuffer> Buffer;
+  error_code ec;
   Module *M = 0;
-  if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(BitcodeFile,
-                                                          &ErrorMessage)) {
-    M = ParseBitcodeFile(Buffer, Context, &ErrorMessage);
-    delete Buffer;
-  }
+  if (!(ec = MemoryBuffer::getFileOrSTDIN(BitcodeFile, Buffer))) {
+    M = ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage);
+  } else
+    ErrorMessage = ec.message();
   if (M == 0) {
     errs() << argv[0] << ": " << BitcodeFile << ": "
       << ErrorMessage << "\n";
diff --git a/tools/llvm-ranlib/llvm-ranlib.cpp b/tools/llvm-ranlib/llvm-ranlib.cpp
index dffe3ad..64f795f 100644
--- a/tools/llvm-ranlib/llvm-ranlib.cpp
+++ b/tools/llvm-ranlib/llvm-ranlib.cpp
@@ -15,14 +15,13 @@
 #include "llvm/Module.h"
 #include "llvm/Bitcode/Archive.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Format.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
-#include <iostream>
-#include <iomanip>
+#include "llvm/Support/Signals.h"
 #include <memory>
-
 using namespace llvm;
 
 // llvm-ar operation code and modifier flags
@@ -35,12 +34,12 @@ Verbose("verbose",cl::Optional,cl::init(false),
 
 // printSymbolTable - print out the archive's symbol table.
 void printSymbolTable(Archive* TheArchive) {
-  std::cout << "\nArchive Symbol Table:\n";
+  outs() << "\nArchive Symbol Table:\n";
   const Archive::SymTabType& symtab = TheArchive->getSymbolTable();
   for (Archive::SymTabType::const_iterator I=symtab.begin(), E=symtab.end();
        I != E; ++I ) {
     unsigned offset = TheArchive->getFirstFileOffset() + I->second;
-    std::cout << " " << std::setw(9) << offset << "\t" << I->first <<"\n";
+    outs() << " " << format("%9u", offset) << "\t" << I->first <<"\n";
   }
 }
 
@@ -71,7 +70,8 @@ int main(int argc, char **argv) {
       throw std::string("Archive name invalid: ") + ArchiveName;
 
     // Make sure it exists, we don't create empty archives
-    if (!ArchivePath.exists())
+    bool Exists;
+    if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists)
       throw std::string("Archive file does not exist");
 
     std::string err_msg;
diff --git a/tools/llvm-shlib/Makefile b/tools/llvm-shlib/Makefile
index 5238130..9e6faca 100644
--- a/tools/llvm-shlib/Makefile
+++ b/tools/llvm-shlib/Makefile
@@ -18,11 +18,12 @@ SHARED_LIBRARY = 1
 include $(LEVEL)/Makefile.config
 
 ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
-    EXPORTED_SYMBOL_FILE = $(ObjDir)/$(LIBRARYNAME).exports
+  EXPORTED_SYMBOL_FILE = $(ObjDir)/$(LIBRARYNAME).exports
 
+  ifeq (1,$(ENABLE_EMBED_STDCXX))
     # It is needed to force static-stdc++.a linked.
-    # FIXME: It should be omitted when configure detects system's stdc++.dll.
     SHLIB_FRAG_NAMES += stdc++.a.o
+  endif
 
 endif
 
@@ -61,14 +62,22 @@ ifeq ($(HOST_OS),Darwin)
     endif
 endif
 
-ifeq ($(HOST_OS), Linux)
+ifeq ($(HOST_OS), $(filter $(HOST_OS), Linux FreeBSD OpenBSD))
     # Include everything from the .a's into the shared library.
     LLVMLibsOptions := -Wl,--whole-archive $(LLVMLibsOptions) \
                        -Wl,--no-whole-archive
+endif
+
+ifeq ($(HOST_OS),Linux)
     # Don't allow unresolved symbols.
     LLVMLibsOptions += -Wl,--no-undefined
 endif
 
+ifeq ($(HOST_OS),SunOS)
+    # add -z allextract ahead of other libraries on Solaris
+    LLVMLibsOptions := -Wl,-z -Wl,allextract $(LLVMLibsOptions)
+endif
+
 ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
 
 SHLIB_STUBS := $(addprefix $(ObjDir)/, $(SHLIB_FRAG_NAMES))
diff --git a/tools/llvm-stub/llvm-stub.c b/tools/llvm-stub/llvm-stub.c
index f2e478e..31c2d09 100644
--- a/tools/llvm-stub/llvm-stub.c
+++ b/tools/llvm-stub/llvm-stub.c
@@ -1,10 +1,10 @@
 /*===- llvm-stub.c - Stub executable to run llvm bitcode files ------------===//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
-// 
+//
 //===----------------------------------------------------------------------===//
 //
 // This tool is used by the gccld program to enable transparent execution of
@@ -64,7 +64,11 @@ int main(int argc, char** argv) {
   memcpy((char **)Args+2, argv+1, sizeof(char*)*argc);
 
   /* Run the JIT. */
-  execvp(Interp, (char **)Args);
+#ifndef _WIN32
+  execvp(Interp, (char **)Args); /* POSIX execvp takes a char *const[]. */
+#else
+  execvp(Interp, Args); /* windows execvp takes a const char *const *. */
+#endif
   /* if _execv returns, the JIT could not be started. */
   fprintf(stderr, "Could not execute the LLVM JIT.  Either add 'lli' to your"
           " path, or set the\ninterpreter you want to use in the LLVMINTERP "
diff --git a/tools/llvmc/doc/LLVMC-Reference.rst b/tools/llvmc/doc/LLVMC-Reference.rst
index d160e75..ec9098b 100644
--- a/tools/llvmc/doc/LLVMC-Reference.rst
+++ b/tools/llvmc/doc/LLVMC-Reference.rst
@@ -319,7 +319,8 @@ separate option groups syntactically.
 
    - ``alias_option`` - a special option type for creating aliases. Unlike other
      option types, aliases are not allowed to have any properties besides the
-     aliased option name. Usage example: ``(alias_option "preprocess", "E")``
+     aliased option name.
+     Usage example: ``(alias_option "preprocess", "E")``
 
    - ``switch_list_option`` - like ``switch_option`` with the ``zero_or_more``
      property, but remembers how many times the switch was turned on. Useful
@@ -456,22 +457,22 @@ use TableGen inheritance instead.
 * Possible tests are:
 
   - ``switch_on`` - Returns true if a given command-line switch is provided by
-    the user. Can be given a list as argument, in that case ``(switch_on ["foo",
-    "bar", "baz"])`` is equivalent to ``(and (switch_on "foo"), (switch_on
+    the user. Can be given multiple arguments, in that case ``(switch_on "foo",
+    "bar", "baz")`` is equivalent to ``(and (switch_on "foo"), (switch_on
     "bar"), (switch_on "baz"))``.
     Example: ``(switch_on "opt")``.
 
-  - ``any_switch_on`` - Given a list of switch options, returns true if any of
+  - ``any_switch_on`` - Given a number of switch options, returns true if any of
     the switches is turned on.
-    Example: ``(any_switch_on ["foo", "bar", "baz"])`` is equivalent to ``(or
+    Example: ``(any_switch_on "foo", "bar", "baz")`` is equivalent to ``(or
     (switch_on "foo"), (switch_on "bar"), (switch_on "baz"))``.
 
-  - ``parameter_equals`` - Returns true if a command-line parameter equals
-    a given value.
+  - ``parameter_equals`` - Returns true if a command-line parameter (first
+    argument) equals a given value (second argument).
     Example: ``(parameter_equals "W", "all")``.
 
-  - ``element_in_list`` - Returns true if a command-line parameter
-    list contains a given value.
+  - ``element_in_list`` - Returns true if a command-line parameter list (first
+    argument) contains a given value (second argument).
     Example: ``(element_in_list "l", "pthread")``.
 
   - ``input_languages_contain`` - Returns true if a given language
@@ -479,27 +480,27 @@ use TableGen inheritance instead.
     Example: ``(input_languages_contain "c++")``.
 
   - ``in_language`` - Evaluates to true if the input file language is equal to
-    the argument. At the moment works only with ``cmd_line`` and ``actions`` (on
+    the argument. At the moment works only with ``command`` and ``actions`` (on
     non-join nodes).
     Example: ``(in_language "c++")``.
 
   - ``not_empty`` - Returns true if a given option (which should be either a
     parameter or a parameter list) is set by the user. Like ``switch_on``, can
-    be also given a list as argument.
-    Example: ``(not_empty "o")``.
+    be also given multiple arguments.
+    Examples: ``(not_empty "o")``, ``(not_empty "o", "l")``.
 
   - ``any_not_empty`` - Returns true if ``not_empty`` returns true for any of
-    the options in the list.
-    Example: ``(any_not_empty ["foo", "bar", "baz"])`` is equivalent to ``(or
+    the provided options.
+    Example: ``(any_not_empty "foo", "bar", "baz")`` is equivalent to ``(or
     (not_empty "foo"), (not_empty "bar"), (not_empty "baz"))``.
 
   - ``empty`` - The opposite of ``not_empty``. Equivalent to ``(not (not_empty
-    X))``. Provided for convenience. Can be given a list as argument.
+    X))``. Can be given multiple arguments.
 
   - ``any_not_empty`` - Returns true if ``not_empty`` returns true for any of
-    the options in the list.
-    Example: ``(any_empty ["foo", "bar", "baz"])`` is equivalent to ``(not (and
-    (not_empty "foo"), (not_empty "bar"), (not_empty "baz")))``.
+    the provided options.
+    Example: ``(any_empty "foo", "bar", "baz")`` is equivalent to ``(or
+    (not_empty "foo"), (not_empty "bar"), (not_empty "baz"))``.
 
   - ``single_input_file`` - Returns true if there was only one input file
     provided on the command-line. Used without arguments:
@@ -511,16 +512,18 @@ use TableGen inheritance instead.
   - ``default`` - Always evaluates to true. Should always be the last
     test in the ``case`` expression.
 
-  - ``and`` - A standard binary logical combinator that returns true iff all of
+  - ``and`` - A standard logical combinator that returns true iff all of
     its arguments return true. Used like this: ``(and (test1), (test2),
     ... (testN))``. Nesting of ``and`` and ``or`` is allowed, but not
     encouraged.
 
-  - ``or`` - A binary logical combinator that returns true iff any of its
-    arguments returns true. Example: ``(or (test1), (test2), ... (testN))``.
+  - ``or`` - A logical combinator that returns true iff any of its arguments
+    return true.
+    Example: ``(or (test1), (test2), ... (testN))``.
 
   - ``not`` - Standard unary logical combinator that negates its
-    argument. Example: ``(not (or (test1), (test2), ... (testN)))``.
+    argument.
+    Example: ``(not (or (test1), (test2), ... (testN)))``.
 
 
 
@@ -549,10 +552,10 @@ The complete list of all currently implemented tool properties follows.
 
 * Possible tool properties:
 
-  - ``in_language`` - input language name. Can be either a string or a
-    list, in case the tool supports multiple input languages.
+  - ``in_language`` - input language name. Can be given multiple arguments, in
+    case the tool supports multiple input languages.
 
-  - ``out_language`` - output language name. Multiple output languages are not
+  - ``out_language`` - output language name. Multiple output languages are
     allowed.
 
   - ``output_suffix`` - output file suffix. Can also be changed
@@ -687,12 +690,12 @@ occasions. Example (adapted from the built-in Base plugin)::
 
 
     def Preprocess : OptionPreprocessor<
-    (case (not (any_switch_on ["O0", "O1", "O2", "O3"])),
+    (case (not (any_switch_on "O0", "O1", "O2", "O3")),
                (set_option "O2"),
-          (and (switch_on "O3"), (any_switch_on ["O0", "O1", "O2"])),
-               (unset_option ["O0", "O1", "O2"]),
-          (and (switch_on "O2"), (any_switch_on ["O0", "O1"])),
-               (unset_option ["O0", "O1"]),
+          (and (switch_on "O3"), (any_switch_on "O0", "O1", "O2")),
+               (unset_option "O0", "O1", "O2"),
+          (and (switch_on "O2"), (any_switch_on "O0", "O1")),
+               (unset_option "O0", "O1"),
           (and (switch_on "O1"), (switch_on "O0")),
                (unset_option "O0"))
     >;
@@ -709,10 +712,10 @@ set or unset a given option. To set an option with ``set_option``, use the
 two-argument form: ``(set_option "parameter", VALUE)``. Here, ``VALUE`` can be
 either a string, a string list, or a boolean constant.
 
-For convenience, ``set_option`` and ``unset_option`` also work on lists. That
-is, instead of ``[(unset_option "A"), (unset_option "B")]`` you can use
-``(unset_option ["A", "B"])``. Obviously, ``(set_option ["A", "B"])`` is valid
-only if both ``A`` and ``B`` are switches.
+For convenience, ``set_option`` and ``unset_option`` also work with multiple
+arguments. That is, instead of ``[(unset_option "A"), (unset_option "B")]`` you
+can use ``(unset_option "A", "B")``. Obviously, ``(set_option "A", "B")`` is
+only valid if both ``A`` and ``B`` are switches.
 
 
 More advanced topics
diff --git a/tools/llvmc/examples/mcc16/Hooks.cpp b/tools/llvmc/examples/mcc16/Hooks.cpp
index edb91e1..95158ef 100644
--- a/tools/llvmc/examples/mcc16/Hooks.cpp
+++ b/tools/llvmc/examples/mcc16/Hooks.cpp
@@ -1,4 +1,4 @@
-#include "llvm/System/Path.h"
+#include "llvm/Support/Path.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/raw_ostream.h"
 
diff --git a/tools/llvmc/examples/mcc16/Main.cpp b/tools/llvmc/examples/mcc16/Main.cpp
index 55ae912..5d4992d 100644
--- a/tools/llvmc/examples/mcc16/Main.cpp
+++ b/tools/llvmc/examples/mcc16/Main.cpp
@@ -16,7 +16,7 @@
 #include "llvm/CompilerDriver/BuiltinOptions.h"
 #include "llvm/CompilerDriver/Main.h"
 
-#include "llvm/System/Path.h"
+#include "llvm/Support/Path.h"
 #include "llvm/Config/config.h"
 
 #include <iostream>
diff --git a/tools/llvmc/src/Base.td.in b/tools/llvmc/src/Base.td.in
index 0c4de4c..50533f1 100644
--- a/tools/llvmc/src/Base.td.in
+++ b/tools/llvmc/src/Base.td.in
@@ -11,7 +11,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-
 // Options
 
 def OptList : OptionList<[
@@ -35,8 +34,6 @@ def OptList : OptionList<[
     (help "Stop after compilation, do not assemble")),
  (switch_option "c",
     (help "Compile and assemble, but do not link")),
- (switch_option "pthread",
-    (help "Enable threads")),
  (switch_option "m32",
     (help "Generate code for a 32-bit environment"), (hidden)),
  (switch_option "m64",
@@ -45,22 +42,21 @@ def OptList : OptionList<[
     (help "Relocation model: PIC"), (hidden)),
  (switch_option "mdynamic-no-pic",
     (help "Relocation model: dynamic-no-pic"), (hidden)),
- (switch_option "shared",
-     (help "Create a DLL instead of the regular executable")),
  (parameter_option "linker",
     (help "Choose linker (possible values: gcc, g++)")),
  (parameter_option "mtune",
-    (help "Target a specific CPU type"), (hidden), (forward_not_split)),
-
- // TODO: Add a conditional compilation mechanism to make Darwin-only options
- // like '-arch' really Darwin-only.
-
- (parameter_option "arch",
-    (help "Compile for the specified target architecture"), (hidden)),
- (parameter_option "march",
-    (help "A synonym for -mtune"), (hidden), (forward_not_split)),
+    (help "Target a specific CPU type"), (forward_not_split)),
+ (parameter_list_option "march",
+    (help "Generate code for the specified machine type")),
  (parameter_option "mcpu",
     (help "A deprecated synonym for -mtune"), (hidden), (forward_not_split)),
+ (parameter_option "mfpu",
+    (help "Specify type of floating point unit"),
+    (hidden), (forward_not_split)),
+ (parameter_option "mabi",
+    (help "Generate code for the specified ABI"), (hidden)),
+ (parameter_option "mfloat-abi",
+    (help "Specifies which floating-point ABI to use"), (hidden)),
  (switch_option "mfix-and-continue",
     (help "Needed by gdb to load .o files dynamically"), (hidden)),
  (parameter_option "MF",
@@ -73,14 +69,6 @@ def OptList : OptionList<[
  (parameter_list_option "iquote",
     (help "Search dir only for files requested with #inlcude \"file\""),
     (hidden)),
- (parameter_list_option "framework",
-    (help "Specifies a framework to link against")),
- (parameter_list_option "weak_framework",
-    (help "Specifies a framework to weakly link against"), (hidden)),
- (parameter_option "filelist", (hidden),
-    (help "Link the files listed in file")),
- (prefix_list_option "F",
-    (help "Add a directory to framework search path")),
  (prefix_list_option "I",
     (help "Add a directory to include path")),
  (prefix_list_option "D",
@@ -93,10 +81,6 @@ def OptList : OptionList<[
     (help "Pass options to assembler")),
  (prefix_list_option "Wllc,", (comma_separated),
     (help "Pass options to llc")),
- (prefix_list_option "L",
-    (help "Add a directory to link path")),
- (prefix_list_option "l",
-    (help "Search a library when linking")),
  (prefix_list_option "Wl,",
     (help "Pass options to linker")),
  (parameter_list_option "Xlinker", (hidden),
@@ -105,7 +89,56 @@ def OptList : OptionList<[
     (help "Pass options to opt")),
  (prefix_list_option "m",
      (help "Enable or disable various extensions (-mmmx, -msse, etc.)"),
-     (hidden)),
+     (hidden))
+]>;
+
+def LinkerOptList : OptionList<[
+ (prefix_list_option "L",
+    (help "Add a directory to link path")),
+ (prefix_list_option "l",
+    (help "Search a library when linking")),
+ (parameter_option "filelist", (hidden),
+    (help "Link the files listed in file")),
+ (switch_option "nostartfiles",
+    (help "Do not use the standard system startup files when linking"),
+    (hidden)),
+ (switch_option "nodefaultlibs",
+    (help "Do not use the standard system libraries when linking"), (hidden)),
+ (switch_option "nostdlib",
+    (help
+    "Do not use the standard system startup files or libraries when linking"),
+    (hidden)),
+ (switch_option "pie",
+     (help "Produce a position independent executable"), (hidden)),
+ (switch_option "rdynamic",
+     (help "Add all symbols to the dynamic export table"), (hidden)),
+ (switch_option "s",
+    (help "Strip all symbols"), (hidden)),
+ (switch_option "static",
+     (help "Do not link against shared libraries"), (hidden)),
+ (switch_option "static-libgcc",
+     (help "Use static libgcc"), (hidden)),
+ (switch_option "shared",
+     (help "Create a DLL instead of the regular executable")),
+ (switch_option "shared-libgcc",
+     (help "Use shared libgcc"), (hidden)),
+ (parameter_option "T",
+     (help "Read linker script"), (hidden)),
+ (parameter_option "u",
+     (help "Start with undefined reference to SYMBOL"), (hidden)),
+ (switch_option "pthread",
+    (help "Enable threads")),
+
+ // TODO: Add a conditional compilation mechanism to make Darwin-only options
+ // like '-arch' really Darwin-only.
+ (parameter_option "arch",
+    (help "Compile for the specified target architecture"), (hidden)),
+ (prefix_list_option "F",
+    (help "Add a directory to framework search path")),
+ (parameter_list_option "framework",
+    (help "Specifies a framework to link against")),
+ (parameter_list_option "weak_framework",
+    (help "Specifies a framework to weakly link against"), (hidden)),
  (switch_option "dynamiclib", (hidden),
      (help "Produce a dynamic library")),
  (switch_option "prebind", (hidden),
@@ -125,24 +158,24 @@ def OptList : OptionList<[
 // Option preprocessor.
 
 def Preprocess : OptionPreprocessor<
-(case (not (any_switch_on ["O0", "O1", "O2", "O3"])),
+(case (not (any_switch_on "O0", "O1", "O2", "O3")),
            (set_option "O2"),
-      (and (switch_on "O3"), (any_switch_on ["O0", "O1", "O2"])),
-           (unset_option ["O0", "O1", "O2"]),
-      (and (switch_on "O2"), (any_switch_on ["O0", "O1"])),
-           (unset_option ["O0", "O1"]),
-      (switch_on ["O1", "O0"]),
+      (and (switch_on "O3"), (any_switch_on "O0", "O1", "O2")),
+           (unset_option "O0", "O1", "O2"),
+      (and (switch_on "O2"), (any_switch_on "O0", "O1")),
+           (unset_option "O0", "O1"),
+      (switch_on "O1", "O0"),
            (unset_option "O0"))
 >;
 
 // Tools
 
-class llvm_gcc_based <string cmd_prefix, string in_lang,
-                      string E_ext, string out_lang> : Tool<
+class llvm_gcc_based <string cmd, string in_lang, string E_ext, dag out_lang,
+                      string out_ext> : Tool<
 [(in_language in_lang),
- (out_language "llvm-bitcode"),
- (output_suffix out_lang),
- (command cmd_prefix),
+ out_lang,
+ (output_suffix out_ext),
+ (command cmd),
  (actions
      (case
          (and (not_empty "o"),
@@ -151,14 +184,20 @@ class llvm_gcc_based <string cmd_prefix, string in_lang,
          (switch_on "E"),
               [(forward "E"), (stop_compilation), (output_suffix E_ext)],
          (and (switch_on "E"), (empty "o")), (no_out_file),
-         (switch_on ["emit-llvm", "S"]),
-              [(output_suffix "ll"), (stop_compilation)],
-         (switch_on ["emit-llvm", "c"]), (stop_compilation),
+
+         // ('-emit-llvm') && !('opt') -> stop compilation
+         (and (switch_on "emit-llvm"), (not (switch_on "opt"))),
+              (stop_compilation),
+         // ('-S' && '-emit-llvm') && !('opt') -> output .ll
+         (and (switch_on "emit-llvm", "S"), (not (switch_on "opt"))),
+              [(forward "S"), (output_suffix "ll")],
+         // Ususally just output .bc
+         (not (switch_on "fsyntax-only")),
+              [(append_cmd "-c"), (append_cmd "-emit-llvm")],
+
+         // -fsyntax-only
          (switch_on "fsyntax-only"), [(forward "fsyntax-only"),
                                       (no_out_file), (stop_compilation)],
-         (switch_on ["S", "emit-llvm"]), [(forward "S"), (forward "emit-llvm")],
-         (not (or (switch_on ["S", "emit-llvm"]), (switch_on "fsyntax-only"))),
-             [(append_cmd "-c"), (append_cmd "-emit-llvm")],
 
          // Forwards
          (not_empty "Xpreprocessor"), (forward "Xpreprocessor"),
@@ -170,8 +209,11 @@ class llvm_gcc_based <string cmd_prefix, string in_lang,
          (not_empty "D"), (forward "D"),
          (not_empty "arch"), (forward "arch"),
          (not_empty "march"), (forward "march"),
-         (not_empty "mtune"), (forward "mtune"),
          (not_empty "mcpu"), (forward "mcpu"),
+         (not_empty "mtune"), (forward "mtune"),
+         (not_empty "mfpu"), (forward "mfpu"),
+         (not_empty "mabi"), (forward "mabi"),
+         (not_empty "mfloat-abi"), (forward "mfloat-abi"),
          (not_empty "m"), (forward "m"),
          (switch_on "mfix-and-continue"), (forward "mfix-and-continue"),
          (switch_on "m32"), (forward "m32"),
@@ -187,30 +229,40 @@ class llvm_gcc_based <string cmd_prefix, string in_lang,
  (sink)
 ]>;
 
-def llvm_gcc_c : llvm_gcc_based<"@LLVMGCCCOMMAND@ -x c", "c", "i", "bc">;
-def llvm_gcc_cpp : llvm_gcc_based<"@LLVMGXXCOMMAND@ -x c++", "c++", "i", "bc">;
-def llvm_gcc_m : llvm_gcc_based<"@LLVMGCCCOMMAND@ -x objective-c",
-                                                  "objective-c", "mi", "bc">;
-def llvm_gcc_mxx : llvm_gcc_based<"@LLVMGCCCOMMAND@ -x objective-c++",
-                                  "objective-c++", "mi", "bc">;
+class llvm_gcc_comp_based <string cmd, string in_lang, string E_ext>
+: llvm_gcc_based<cmd, in_lang, E_ext,
+  (out_language "llvm-bitcode", "object-code"), "bc">;
+
+class llvm_gcc_pch_based <string cmd, string in_lang, string E_ext>
+: llvm_gcc_based<cmd, in_lang, E_ext,
+  (out_language "precompiled-header"), "gch">;
 
-def llvm_gcc_c_pch : llvm_gcc_based<"@LLVMGCCCOMMAND@ -x c-header",
-                                                      "c-header", "i", "gch">;
-def llvm_gcc_cpp_pch : llvm_gcc_based<"@LLVMGXXCOMMAND@ -x c++-header",
-                                                        "c++-header",
-                                                        "i", "gch">;
-def llvm_gcc_m_pch : llvm_gcc_based<"@LLVMGCCCOMMAND@ -x objective-c-header",
-                                                      "objective-c-header",
-                                                      "mi", "gch">;
-def llvm_gcc_mxx_pch
-    : llvm_gcc_based<"@LLVMGCCCOMMAND@ -x objective-c++-header",
-                                       "objective-c++-header", "mi", "gch">;
+def llvm_gcc_c : llvm_gcc_comp_based
+    <"@LLVMGCCCOMMAND@ -x c", "c", "i">;
+def llvm_gcc_cpp : llvm_gcc_comp_based
+    <"@LLVMGXXCOMMAND@ -x c++", "c++", "i">;
+def llvm_gcc_m : llvm_gcc_comp_based
+    <"@LLVMGCCCOMMAND@ -x objective-c", "objective-c", "mi">;
+def llvm_gcc_mxx : llvm_gcc_comp_based
+    <"@LLVMGCCCOMMAND@ -x objective-c++", "objective-c++", "mi">;
+
+def llvm_gcc_c_pch : llvm_gcc_pch_based
+    <"@LLVMGCCCOMMAND@ -x c-header", "c-header", "i">;
+def llvm_gcc_cpp_pch : llvm_gcc_pch_based
+    <"@LLVMGXXCOMMAND@ -x c++-header", "c++-header", "i">;
+def llvm_gcc_m_pch : llvm_gcc_pch_based
+    <"@LLVMGCCCOMMAND@ -x objective-c-header", "objective-c-header", "mi">;
+def llvm_gcc_mxx_pch : llvm_gcc_pch_based
+    <"@LLVMGCCCOMMAND@ -x objective-c++-header", "objective-c++-header", "mi">;
 
 def opt : Tool<
 [(in_language "llvm-bitcode"),
  (out_language "llvm-bitcode"),
- (output_suffix "bc"),
- (actions (case (not_empty "Wo,"), (forward_value "Wo,"),
+ (output_suffix "opt.bc"),
+ (actions (case (switch_on "emit-llvm"), (stop_compilation),
+                (switch_on "emit-llvm", "S"),
+                [(append_cmd "-S"), (output_suffix "ll")],
+                (not_empty "Wo,"), (forward_value "Wo,"),
                 (switch_on "O1"), (forward "O1"),
                 (switch_on "O2"), (forward "O2"),
                 (switch_on "O3"), (forward "O3"))),
@@ -222,7 +274,8 @@ def llvm_as : Tool<
  (out_language "llvm-bitcode"),
  (output_suffix "bc"),
  (command "llvm-as"),
- (actions (case (switch_on "emit-llvm"), (stop_compilation)))
+ (actions (case (and (switch_on "emit-llvm"), (not (switch_on "opt"))),
+                (stop_compilation)))
 ]>;
 
 def llvm_gcc_assembler : Tool<
@@ -234,13 +287,18 @@ def llvm_gcc_assembler : Tool<
           (switch_on "c"), (stop_compilation),
           (not_empty "arch"), (forward "arch"),
           (not_empty "Xassembler"), (forward "Xassembler"),
+          (not_empty "march"), (forward "march"),
+          (not_empty "mcpu"), (forward "mcpu"),
+          (not_empty "mtune"), (forward "mtune"),
+          (not_empty "mabi"), (forward "mabi"),
+          (not_empty "mfloat-abi"), (forward "mfloat-abi"),
           (switch_on "m32"), (forward "m32"),
           (switch_on "m64"), (forward "m64"),
           (not_empty "Wa,"), (forward "Wa,")))
 ]>;
 
 def llc : Tool<
-[(in_language ["llvm-bitcode", "llvm-assembler"]),
+[(in_language "llvm-bitcode", "llvm-assembler"),
  (out_language "assembler"),
  (output_suffix "s"),
  (command "llc"),
@@ -253,19 +311,22 @@ def llc : Tool<
           (switch_on "fPIC"), (append_cmd "-relocation-model=pic"),
           (switch_on "mdynamic-no-pic"),
                      (append_cmd "-relocation-model=dynamic-no-pic"),
-          (not_empty "march"), (forward_as "mtune", "-mcpu"),
-          (not_empty "mtune"), (forward_as "mtune", "-mcpu"),
-          (not_empty "mcpu"), (forward "mcpu"),
+          (not_empty "march"), (forward_transformed_value
+                                "march", "ConvertMArchToMAttr"),
+          (not_empty "mcpu"), (forward_transformed_value "mcpu", "ConvertMCpu"),
+          (and (not_empty "mtune"), (empty "mcpu")),
+                     (forward_as "mtune", "-mcpu"),
+          (not_empty "mfpu"), (forward_transformed_value "mfpu", "ConvertMFpu"),
           (not_empty "m"), (forward_transformed_value "m", "ConvertToMAttr"),
           (not_empty "Wllc,"), (forward_value "Wllc,")))
 ]>;
 
 // Base class for linkers
-class llvm_gcc_based_linker <string cmd_prefix, dag on_empty> : Tool<
-[(in_language ["object-code", "static-library", "dynamic-library"]),
+class llvm_gcc_based_linker <string cmd, dag on_empty> : Tool<
+[(in_language "object-code", "static-library", "dynamic-library"),
  (out_language "executable"),
  (output_suffix "out"),
- (command cmd_prefix),
+ (command cmd),
  (works_on_empty (case (and (not_empty "filelist"), on_empty), true,
                        (default), false)),
  (join),
@@ -277,12 +338,28 @@ class llvm_gcc_based_linker <string cmd_prefix, dag on_empty> : Tool<
           (not_empty "framework"), (forward "framework"),
           (not_empty "weak_framework"), (forward "weak_framework"),
           (not_empty "filelist"), (forward "filelist"),
+          (not_empty "march"), (forward "march"),
+          (not_empty "mcpu"), (forward "mcpu"),
+          (not_empty "mtune"), (forward "mtune"),
+          (not_empty "mabi"), (forward "mabi"),
+          (not_empty "mfloat-abi"), (forward "mfloat-abi"),
           (switch_on "m32"), (forward "m32"),
           (switch_on "m64"), (forward "m64"),
           (not_empty "l"), (forward "l"),
           (not_empty "Xlinker"), (forward "Xlinker"),
           (not_empty "Wl,"), (forward "Wl,"),
+          (switch_on "nostartfiles"), (forward "nostartfiles"),
+          (switch_on "nodefaultlibs"), (forward "nodefaultlibs"),
+          (switch_on "nostdlib"), (forward "nostdlib"),
+          (switch_on "pie"), (forward "pie"),
+          (switch_on "rdynamic"), (forward "rdynamic"),
+          (switch_on "s"), (forward "s"),
+          (switch_on "static"), (forward "static"),
+          (switch_on "static-libgcc"), (forward "static-libgcc"),
           (switch_on "shared"), (forward "shared"),
+          (switch_on "shared-libgcc"), (forward "shared-libgcc"),
+          (not_empty "T"), (forward "T"),
+          (not_empty "u"), (forward "u"),
           (switch_on "dynamiclib"), (forward "dynamiclib"),
           (switch_on "prebind"), (forward "prebind"),
           (switch_on "dead_strip"), (forward "dead_strip"),
@@ -305,6 +382,7 @@ def llvm_gcc_cpp_linker : llvm_gcc_based_linker<"@LLVMGXXCOMMAND@",
 // Language map
 
 def LanguageMap : LanguageMap<[
+    (lang_to_suffixes "precompiled-header", ["gch", "pch"]),
     (lang_to_suffixes "c++", ["cc", "cp", "cxx", "cpp", "CPP", "c++", "C"]),
     (lang_to_suffixes "c++-header", "hpp"),
     (lang_to_suffixes "c", "c"),
@@ -322,7 +400,7 @@ def LanguageMap : LanguageMap<[
     (lang_to_suffixes "object-code", ["o", "*empty*"]),
     (lang_to_suffixes "static-library", ["a", "lib"]),
     (lang_to_suffixes "dynamic-library", ["so", "dylib", "dll"]),
-    (lang_to_suffixes "executable", ["out"])
+    (lang_to_suffixes "executable", "out")
 ]>;
 
 // Compilation graph
@@ -347,7 +425,8 @@ def CompilationGraph : CompilationGraph<[
     (edge "llvm_as", "llc"),
 
     (optional_edge "root", "llvm_as",
-                   (case (switch_on "emit-llvm"), (inc_weight))),
+                   (case (or (switch_on "emit-llvm"),
+                             (switch_on "opt")), (inc_weight))),
     (optional_edge "llvm_gcc_c", "opt",
                    (case (switch_on "opt"), (inc_weight))),
     (optional_edge "llvm_gcc_cpp", "opt",
diff --git a/tools/llvmc/src/Clang.td b/tools/llvmc/src/Clang.td
index 1d75743..e2d32e8 100644
--- a/tools/llvmc/src/Clang.td
+++ b/tools/llvmc/src/Clang.td
@@ -25,12 +25,12 @@ class clang_based<string language, string cmd, string ext_E> : Tool<
                     [(forward "E"), (stop_compilation), (output_suffix ext_E)],
                 (and (switch_on "E"), (empty "o")), (no_out_file),
                 (switch_on "fsyntax-only"), (stop_compilation),
-                (switch_on ["S", "emit-llvm"]),
+                (switch_on "S", "emit-llvm"),
                            [(append_cmd "-emit-llvm"),
                             (stop_compilation), (output_suffix "ll")],
-                (not (switch_on ["S", "emit-llvm"])),
+                (not (switch_on "S", "emit-llvm")),
                      (append_cmd "-emit-llvm-bc"),
-                (switch_on ["c", "emit-llvm"]),
+                (switch_on "c", "emit-llvm"),
                            (stop_compilation),
                 (not_empty "include"), (forward "include"),
                 (not_empty "I"), (forward "I"))),
diff --git a/tools/llvmc/src/Hooks.cpp b/tools/llvmc/src/Hooks.cpp
index 661a914..5aa250e 100644
--- a/tools/llvmc/src/Hooks.cpp
+++ b/tools/llvmc/src/Hooks.cpp
@@ -1,14 +1,182 @@
+#include "llvm/ADT/StringMap.h"
+
 #include <string>
 #include <vector>
 
 namespace hooks {
+
+/// NUM_KEYS - Calculate the size of a const char* array.
+#define NUM_KEYS(Keys) sizeof(Keys) / sizeof(const char*)
+
+// See http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
+inline unsigned NextHighestPowerOf2 (unsigned i) {
+  --i;
+  i |= i >> 1;
+  i |= i >> 2;
+  i |= i >> 4;
+  i |= i >> 8;
+  i |= i >> 16;
+  ++i;
+  return i;
+}
+
 typedef std::vector<std::string> StrVec;
+typedef llvm::StringMap<const char*> ArgMap;
+
+/// AddPlusOrMinus - Convert 'no-foo' to '-foo' and 'foo' to '+foo'.
+void AddPlusOrMinus (const std::string& Arg, std::string& out) {
+  if (Arg.find("no-") == 0 && Arg[3] != 0) {
+    out += '-';
+    out += Arg.c_str() + 3;
+  }
+  else {
+    out += '+';
+    out += Arg;
+  }
+}
+
+// -march values that need to be special-cased.
+const char* MArchKeysARM[] = { "armv4t", "armv5t", "armv5te", "armv6",
+                               "armv6-m", "armv6t2", "armv7-a", "armv7-m" };
+const char* MArchValuesARM[] = { "v4t", "v5t", "v5te", "v6", "v6m", "v6t2",
+                                 "v7a", "v7m" };
+const unsigned MArchNumKeysARM = NUM_KEYS(MArchKeysARM);
+const unsigned MArchMapSize = NextHighestPowerOf2(MArchNumKeysARM);
+
+// -march values that should be forwarded as -mcpu
+const char* MArchMCpuKeysARM[] = { "iwmmxt", "ep9312" };
+const char* MArchMCpuValuesARM[] = { "iwmmxt", "ep9312"};
+const unsigned MArchMCpuNumKeysARM = NUM_KEYS(MArchMCpuKeysARM);
+const unsigned MArchMCpuMapSize = NextHighestPowerOf2(MArchMCpuNumKeysARM);
+
+
+void FillInArgMap(ArgMap& Args, const char* Keys[],
+                  const char* Values[], unsigned NumKeys)
+{
+  for (unsigned i = 0; i < NumKeys; ++i) {
+    // Explicit cast to StringRef here is necessary to pick up the right
+    // overload.
+    Args.GetOrCreateValue(llvm::StringRef(Keys[i]), Values[i]);
+  }
+}
+
+/// ConvertMArchToMAttr - Convert -march from the gcc dialect to
+/// something llc can understand.
+std::string ConvertMArchToMAttr(const StrVec& Opts) {
+  static ArgMap MArchMap(MArchMapSize);
+  static ArgMap MArchMCpuMap(MArchMapSize);
+  static bool StaticDataInitialized = false;
+
+  if (!StaticDataInitialized) {
+    FillInArgMap(MArchMap, MArchKeysARM, MArchValuesARM, MArchNumKeysARM);
+    FillInArgMap(MArchMCpuMap, MArchMCpuKeysARM,
+                 MArchMCpuValuesARM, MArchMCpuNumKeysARM);
+    StaticDataInitialized = true;
+  }
+
+  std::string mattr("-mattr=");
+  std::string mcpu("-mcpu=");
+  bool mattrTouched = false;
+  bool mcpuTouched = false;
+
+  for (StrVec::const_iterator B = Opts.begin(), E = Opts.end(); B!=E; ++B) {
+    const std::string& Arg = *B;
+
+    // Check if the argument should be forwarded to -mcpu instead of -mattr.
+    {
+      ArgMap::const_iterator I = MArchMCpuMap.find(Arg);
+
+      if (I != MArchMCpuMap.end()) {
+        mcpuTouched = true;
+        mcpu += I->getValue();
+        continue;
+      }
+    }
+
+    if (mattrTouched)
+      mattr += ",";
+
+    // Check if the argument is a special case.
+    {
+      ArgMap::const_iterator I = MArchMap.find(Arg);
 
-/// ConvertToMAttr - Convert -m* and -mno-* to -mattr=+*,-*
+      if (I != MArchMap.end()) {
+        mattrTouched = true;
+        mattr += '+';
+        mattr += I->getValue();
+        continue;
+      }
+    }
+
+    AddPlusOrMinus(Arg, mattr);
+  }
+
+  std::string out;
+  if (mattrTouched)
+    out += mattr;
+  if (mcpuTouched)
+    out += (mattrTouched ? " " : "") + mcpu;
+
+  return out;
+}
+
+// -mcpu values that need to be special-cased.
+const char* MCpuKeysPPC[] = { "G3", "G4", "G5", "powerpc", "powerpc64"};
+const char* MCpuValuesPPC[] = { "g3", "g4", "g5", "ppc", "ppc64"};
+const unsigned MCpuNumKeysPPC = NUM_KEYS(MCpuKeysPPC);
+const unsigned MCpuMapSize = NextHighestPowerOf2(MCpuNumKeysPPC);
+
+/// ConvertMCpu - Convert -mcpu value from the gcc to the llc dialect.
+std::string ConvertMCpu(const char* Val) {
+  static ArgMap MCpuMap(MCpuMapSize);
+  static bool StaticDataInitialized = false;
+
+  if (!StaticDataInitialized) {
+    FillInArgMap(MCpuMap, MCpuKeysPPC, MCpuValuesPPC, MCpuNumKeysPPC);
+    StaticDataInitialized = true;
+  }
+
+  std::string ret = "-mcpu=";
+  ArgMap::const_iterator I = MCpuMap.find(Val);
+  if (I != MCpuMap.end()) {
+    return ret + I->getValue();
+  }
+  return ret + Val;
+}
+
+// -mfpu values that need to be special-cased.
+const char* MFpuKeysARM[] = { "vfp", "vfpv3",
+                              "vfpv3-fp16", "vfpv3-d16", "vfpv3-d16-fp16",
+                              "neon", "neon-fp16" };
+const char* MFpuValuesARM[] = { "vfp2", "vfp3",
+                                "+vfp3,+fp16", "+vfp3,+d16", "+vfp3,+d16,+fp16",
+                                "+neon", "+neon,+neonfp" };
+const unsigned MFpuNumKeysARM = NUM_KEYS(MFpuKeysARM);
+const unsigned MFpuMapSize = NextHighestPowerOf2(MFpuNumKeysARM);
+
+/// ConvertMFpu - Convert -mfpu value from the gcc to the llc dialect.
+std::string ConvertMFpu(const char* Val) {
+  static ArgMap MFpuMap(MFpuMapSize);
+  static bool StaticDataInitialized = false;
+
+  if (!StaticDataInitialized) {
+    FillInArgMap(MFpuMap, MFpuKeysARM, MFpuValuesARM, MFpuNumKeysARM);
+    StaticDataInitialized = true;
+  }
+
+  std::string ret = "-mattr=";
+  ArgMap::const_iterator I = MFpuMap.find(Val);
+  if (I != MFpuMap.end()) {
+    return ret + I->getValue();
+  }
+  return ret + '+' + Val;
+}
+
+/// ConvertToMAttr - Convert '-mfoo' and '-mno-bar' to '-mattr=+foo,-bar'.
 std::string ConvertToMAttr(const StrVec& Opts) {
   std::string out("-mattr=");
-
   bool firstIter = true;
+
   for (StrVec::const_iterator B = Opts.begin(), E = Opts.end(); B!=E; ++B) {
     const std::string& Arg = *B;
 
@@ -17,14 +185,7 @@ std::string ConvertToMAttr(const StrVec& Opts) {
     else
       out += ",";
 
-    if (Arg.find("no-") == 0 && Arg[3] != 0) {
-      out += '-';
-      out += Arg.c_str() + 3;
-    }
-    else {
-      out += '+';
-      out += Arg;
-    }
+    AddPlusOrMinus(Arg, out);
   }
 
   return out;
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index 671348c..adb7102 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -39,9 +39,11 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/StandardPasses.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Program.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
 #include "llvm/Config/config.h"
 #include <cstdlib>
 #include <unistd.h>
@@ -183,7 +185,7 @@ const void* LTOCodeGenerator::compile(size_t* length, std::string& errMsg)
 {
     // make unique temp .s file to put generated assembly code
     sys::Path uniqueAsmPath("lto-llvm.s");
-    if ( uniqueAsmPath.createTemporaryFileOnDisk(true, &errMsg) )
+    if ( uniqueAsmPath.createTemporaryFileOnDisk(false, &errMsg) )
         return NULL;
     sys::RemoveFileOnSignal(uniqueAsmPath);
        
@@ -208,7 +210,7 @@ const void* LTOCodeGenerator::compile(size_t* length, std::string& errMsg)
     
     // make unique temp .o file to put generated object file
     sys::PathWithStatus uniqueObjPath("lto-llvm.o");
-    if ( uniqueObjPath.createTemporaryFileOnDisk(true, &errMsg) ) {
+    if ( uniqueObjPath.createTemporaryFileOnDisk(false, &errMsg) ) {
         uniqueAsmPath.eraseFromDisk();
         return NULL;
     }
@@ -220,9 +222,12 @@ const void* LTOCodeGenerator::compile(size_t* length, std::string& errMsg)
     if ( !asmResult ) {
         // remove old buffer if compile() called twice
         delete _nativeObjectFile;
-        
+
         // read .o file into memory buffer
-        _nativeObjectFile = MemoryBuffer::getFile(uniqueObjStr.c_str(),&errMsg);
+        OwningPtr<MemoryBuffer> BuffPtr;
+        if (error_code ec = MemoryBuffer::getFile(uniqueObjStr.c_str(),BuffPtr))
+          errMsg = ec.message();
+        _nativeObjectFile = BuffPtr.take();
     }
 
     // remove temp files
@@ -342,21 +347,34 @@ void LTOCodeGenerator::applyScopeRestrictions() {
 
   // mark which symbols can not be internalized 
   if (!_mustPreserveSymbols.empty()) {
-    MCContext Context(*_target->getMCAsmInfo());
+    MCContext Context(*_target->getMCAsmInfo(), NULL);
     Mangler mangler(Context, *_target->getTargetData());
     std::vector<const char*> mustPreserveList;
+    SmallString<64> Buffer;
     for (Module::iterator f = mergedModule->begin(),
          e = mergedModule->end(); f != e; ++f) {
+      Buffer.clear();
+      mangler.getNameWithPrefix(Buffer, f, false);
       if (!f->isDeclaration() &&
-          _mustPreserveSymbols.count(mangler.getNameWithPrefix(f)))
+          _mustPreserveSymbols.count(Buffer))
         mustPreserveList.push_back(::strdup(f->getNameStr().c_str()));
     }
     for (Module::global_iterator v = mergedModule->global_begin(), 
          e = mergedModule->global_end(); v !=  e; ++v) {
+      Buffer.clear();
+      mangler.getNameWithPrefix(Buffer, v, false);
       if (!v->isDeclaration() &&
-          _mustPreserveSymbols.count(mangler.getNameWithPrefix(v)))
+          _mustPreserveSymbols.count(Buffer))
         mustPreserveList.push_back(::strdup(v->getNameStr().c_str()));
     }
+    for (Module::alias_iterator a = mergedModule->alias_begin(),
+         e = mergedModule->alias_end(); a != e; ++a) {
+      Buffer.clear();
+      mangler.getNameWithPrefix(Buffer, a, false);
+      if (!a->isDeclaration() &&
+          _mustPreserveSymbols.count(Buffer))
+        mustPreserveList.push_back(::strdup(a->getNameStr().c_str()));
+    }
     passes.add(createInternalizePass(mustPreserveList));
   }
   
diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index c7cd585..8562f74 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -23,9 +23,10 @@
 #include "llvm/Support/SystemUtils.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/MathExtras.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Process.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/system_error.h"
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/SubtargetFeature.h"
 #include "llvm/MC/MCAsmInfo.h"
@@ -56,23 +57,18 @@ bool LTOModule::isBitcodeFileForTarget(const void *mem, size_t length,
 
 bool LTOModule::isBitcodeFileForTarget(const char *path,
                                        const char *triplePrefix) {
-  MemoryBuffer *buffer = MemoryBuffer::getFile(path);
-  if (buffer == NULL)
+  OwningPtr<MemoryBuffer> buffer;
+  if (MemoryBuffer::getFile(path, buffer))
     return false;
-  return isTargetMatch(buffer, triplePrefix);
+  return isTargetMatch(buffer.take(), triplePrefix);
 }
 
 // Takes ownership of buffer.
 bool LTOModule::isTargetMatch(MemoryBuffer *buffer, const char *triplePrefix) {
-  OwningPtr<Module> m(getLazyBitcodeModule(buffer, getGlobalContext()));
-  // On success, m owns buffer and both are deleted at end of this method.
-  if (!m) {
-    delete buffer;
-    return false;
-  }
-  std::string actualTarget = m->getTargetTriple();
-  return (strncmp(actualTarget.c_str(), triplePrefix,
-                  strlen(triplePrefix)) == 0);
+  std::string Triple = getBitcodeTargetTriple(buffer, getGlobalContext());
+  delete buffer;
+  return (strncmp(Triple.c_str(), triplePrefix,
+ 		  strlen(triplePrefix)) == 0);
 }
 
 
@@ -83,9 +79,22 @@ LTOModule::LTOModule(Module *m, TargetMachine *t)
 
 LTOModule *LTOModule::makeLTOModule(const char *path,
                                     std::string &errMsg) {
-  OwningPtr<MemoryBuffer> buffer(MemoryBuffer::getFile(path, &errMsg));
-  if (!buffer)
+  OwningPtr<MemoryBuffer> buffer;
+  if (error_code ec = MemoryBuffer::getFile(path, buffer)) {
+    errMsg = ec.message();
     return NULL;
+  }
+  return makeLTOModule(buffer.get(), errMsg);
+}
+
+LTOModule *LTOModule::makeLTOModule(int fd, const char *path,
+                                    off_t size,
+                                    std::string &errMsg) {
+  OwningPtr<MemoryBuffer> buffer;
+  if (error_code ec = MemoryBuffer::getOpenFile(fd, path, buffer, size)) {
+    errMsg = ec.message();
+    return NULL;
+  }
   return makeLTOModule(buffer.get(), errMsg);
 }
 
@@ -306,8 +315,14 @@ void LTOModule::addDefinedSymbol(GlobalValue *def, Mangler &mangler,
   if (def->getName().startswith("llvm."))
     return;
 
+  // ignore available_externally
+  if (def->hasAvailableExternallyLinkage())
+    return;
+
   // string is owned by _defines
-  const char *symbolName = ::strdup(mangler.getNameWithPrefix(def).c_str());
+  SmallString<64> Buffer;
+  mangler.getNameWithPrefix(Buffer, def, false);
+  const char *symbolName = ::strdup(Buffer.c_str());
 
   // set alignment part log2() can have rounding errors
   uint32_t align = def->getAlignment();
@@ -325,24 +340,26 @@ void LTOModule::addDefinedSymbol(GlobalValue *def, Mangler &mangler,
   }
 
   // set definition part
-  if (def->hasWeakLinkage() || def->hasLinkOnceLinkage()) {
+  if (def->hasWeakLinkage() || def->hasLinkOnceLinkage() ||
+      def->hasLinkerPrivateWeakLinkage() ||
+      def->hasLinkerPrivateWeakDefAutoLinkage())
     attr |= LTO_SYMBOL_DEFINITION_WEAK;
-  }
-  else if (def->hasCommonLinkage()) {
+  else if (def->hasCommonLinkage())
     attr |= LTO_SYMBOL_DEFINITION_TENTATIVE;
-  }
-  else {
+  else
     attr |= LTO_SYMBOL_DEFINITION_REGULAR;
-  }
 
   // set scope part
   if (def->hasHiddenVisibility())
     attr |= LTO_SYMBOL_SCOPE_HIDDEN;
   else if (def->hasProtectedVisibility())
     attr |= LTO_SYMBOL_SCOPE_PROTECTED;
-  else if (def->hasExternalLinkage() || def->hasWeakLinkage()
-           || def->hasLinkOnceLinkage() || def->hasCommonLinkage())
+  else if (def->hasExternalLinkage() || def->hasWeakLinkage() ||
+           def->hasLinkOnceLinkage() || def->hasCommonLinkage() ||
+           def->hasLinkerPrivateWeakLinkage())
     attr |= LTO_SYMBOL_SCOPE_DEFAULT;
+  else if (def->hasLinkerPrivateWeakDefAutoLinkage())
+    attr |= LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN;
   else
     attr |= LTO_SYMBOL_SCOPE_INTERNAL;
 
@@ -380,7 +397,8 @@ void LTOModule::addPotentialUndefinedSymbol(GlobalValue *decl,
   if (isa<GlobalAlias>(decl))
     return;
 
-  std::string name = mangler.getNameWithPrefix(decl);
+  SmallString<64> name;
+  mangler.getNameWithPrefix(name, decl, false);
 
   // we already have the symbol
   if (_undefines.find(name) != _undefines.end())
@@ -426,7 +444,7 @@ void LTOModule::lazyParseSymbols() {
   _symbolsParsed = true;
 
   // Use mangler to add GlobalPrefix to names to match linker names.
-  MCContext Context(*_target->getMCAsmInfo());
+  MCContext Context(*_target->getMCAsmInfo(), NULL);
   Mangler mangler(Context, *_target->getTargetData());
 
   // add functions
@@ -472,6 +490,15 @@ void LTOModule::lazyParseSymbols() {
     pos = inlineAsm.find(glbl, pend);
   }
 
+  // add aliases
+  for (Module::alias_iterator i = _module->alias_begin(),
+         e = _module->alias_end(); i != e; ++i) {
+    if (i->isDeclaration())
+      addPotentialUndefinedSymbol(i, mangler);
+    else
+      addDefinedDataSymbol(i, mangler);
+  }
+
   // make symbols for all undefines
   for (StringMap<NameAndAttributes>::iterator it=_undefines.begin();
        it != _undefines.end(); ++it) {
diff --git a/tools/lto/LTOModule.h b/tools/lto/LTOModule.h
index a19acc0..1794d81 100644
--- a/tools/lto/LTOModule.h
+++ b/tools/lto/LTOModule.h
@@ -51,6 +51,9 @@ struct LTOModule {
 
     static LTOModule*        makeLTOModule(const char* path,
                                           std::string& errMsg);
+    static LTOModule*        makeLTOModule(int fd, const char *path,
+                                           off_t size,
+                                           std::string& errMsg);
     static LTOModule*        makeLTOModule(const void* mem, size_t length,
                                            std::string& errMsg);
 
diff --git a/tools/lto/Makefile b/tools/lto/Makefile
index e157a4c..294c81b 100644
--- a/tools/lto/Makefile
+++ b/tools/lto/Makefile
@@ -24,6 +24,10 @@ LINK_COMPONENTS := $(TARGETS_TO_BUILD) ipo scalaropts linker bitreader bitwriter
 
 include $(LEVEL)/Makefile.common
 
+ifdef LLVM_VERSION_INFO
+CXX.Flags += -DLLVM_VERSION_INFO='"$(LLVM_VERSION_INFO)"'
+endif
+
 ifeq ($(HOST_OS),Darwin)
     # Special hack to allow libLTO to have an offset version number.
     ifdef LLVM_LTO_VERSION_OFFSET
diff --git a/tools/lto/lto.cpp b/tools/lto/lto.cpp
index 3d7ef0a..7d4871d 100644
--- a/tools/lto/lto.cpp
+++ b/tools/lto/lto.cpp
@@ -91,6 +91,14 @@ lto_module_t lto_module_create(const char* path)
      return LTOModule::makeLTOModule(path, sLastErrorString);
 }
 
+//
+// loads an object file from disk
+// returns NULL on error (check lto_get_error_message() for details)
+//
+lto_module_t lto_module_create_from_fd(int fd, const char *path, off_t size)
+{
+     return LTOModule::makeLTOModule(fd, path, size, sLastErrorString);
+}
 
 //
 // loads an object file from memory 
@@ -132,7 +140,7 @@ void lto_module_set_target_triple(lto_module_t mod, const char *triple)
 //
 // returns the number of symbols in the object module
 //
-uint32_t lto_module_get_num_symbols(lto_module_t mod)
+unsigned int lto_module_get_num_symbols(lto_module_t mod)
 {
     return mod->getSymbolCount();
 }
@@ -140,7 +148,7 @@ uint32_t lto_module_get_num_symbols(lto_module_t mod)
 //
 // returns the name of the ith symbol in the object module
 //
-const char* lto_module_get_symbol_name(lto_module_t mod, uint32_t index)
+const char* lto_module_get_symbol_name(lto_module_t mod, unsigned int index)
 {
     return mod->getSymbolName(index);
 }
@@ -150,7 +158,7 @@ const char* lto_module_get_symbol_name(lto_module_t mod, uint32_t index)
 // returns the attributes of the ith symbol in the object module
 //
 lto_symbol_attributes lto_module_get_symbol_attribute(lto_module_t mod, 
-                                                      uint32_t index)
+                                                      unsigned int index)
 {
     return mod->getSymbolAttributes(index);
 }
diff --git a/tools/lto/lto.exports b/tools/lto/lto.exports
index 4dbf760..a374091 100644
--- a/tools/lto/lto.exports
+++ b/tools/lto/lto.exports
@@ -1,6 +1,7 @@
 lto_get_error_message
 lto_get_version
 lto_module_create
+lto_module_create_from_fd
 lto_module_create_from_memory
 lto_module_get_num_symbols
 lto_module_get_symbol_attribute
diff --git a/tools/macho-dump/CMakeLists.txt b/tools/macho-dump/CMakeLists.txt
new file mode 100644
index 0000000..d55e1d5
--- /dev/null
+++ b/tools/macho-dump/CMakeLists.txt
@@ -0,0 +1,5 @@
+set(LLVM_LINK_COMPONENTS ${LLVM_TARGETS_TO_BUILD} support object)
+
+add_llvm_tool(macho-dump
+  macho-dump.cpp
+  )
diff --git a/tools/macho-dump/Makefile b/tools/macho-dump/Makefile
new file mode 100644
index 0000000..638015e
--- /dev/null
+++ b/tools/macho-dump/Makefile
@@ -0,0 +1,23 @@
+##===- tools/macho-dump/Makefile ---------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../..
+TOOLNAME = macho-dump
+
+# This tool has no plugins, optimize startup time.
+TOOL_NO_EXPORTS = 1
+
+# Include this here so we can get the configuration of the targets
+# that have been configured for construction. We have to do this
+# early so we can set up LINK_COMPONENTS before including Makefile.rules
+include $(LEVEL)/Makefile.config
+
+LINK_COMPONENTS := support object
+
+include $(LLVM_SRC_ROOT)/Makefile.rules
diff --git a/tools/macho-dump/macho-dump.cpp b/tools/macho-dump/macho-dump.cpp
new file mode 100644
index 0000000..c4c558d
--- /dev/null
+++ b/tools/macho-dump/macho-dump.cpp
@@ -0,0 +1,391 @@
+//===-- macho-dump.cpp - Mach Object Dumping Tool -------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a testing tool for use with the MC/Mach-O LLVM components.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/MachOObject.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
+using namespace llvm;
+using namespace llvm::object;
+
+static cl::opt<std::string>
+InputFile(cl::Positional, cl::desc("<input file>"), cl::init("-"));
+
+static cl::opt<bool>
+ShowSectionData("dump-section-data", cl::desc("Dump the contents of sections"),
+                cl::init(false));
+
+///
+
+static const char *ProgramName;
+
+static void Message(const char *Type, const Twine &Msg) {
+  errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
+}
+
+static int Error(const Twine &Msg) {
+  Message("error", Msg);
+  return 1;
+}
+
+static void Warning(const Twine &Msg) {
+  Message("warning", Msg);
+}
+
+///
+
+static int DumpHeader(MachOObject &Obj) {
+  // Read the header.
+  const macho::Header &Hdr = Obj.getHeader();
+  outs() << "('cputype', " << Hdr.CPUType << ")\n";
+  outs() << "('cpusubtype', " << Hdr.CPUSubtype << ")\n";
+  outs() << "('filetype', " << Hdr.FileType << ")\n";
+  outs() << "('num_load_commands', " << Hdr.NumLoadCommands << ")\n";
+  outs() << "('load_commands_size', " << Hdr.SizeOfLoadCommands << ")\n";
+  outs() << "('flag', " << Hdr.Flags << ")\n";
+
+  // Print extended header if 64-bit.
+  if (Obj.is64Bit()) {
+    const macho::Header64Ext &Hdr64 = Obj.getHeader64Ext();
+    outs() << "('reserved', " << Hdr64.Reserved << ")\n";
+  }
+
+  return 0;
+}
+
+static void DumpSegmentCommandData(StringRef Name,
+                                   uint64_t VMAddr, uint64_t VMSize,
+                                   uint64_t FileOffset, uint64_t FileSize,
+                                   uint32_t MaxProt, uint32_t InitProt,
+                                   uint32_t NumSections, uint32_t Flags) {
+  outs() << "  ('segment_name', '";
+  outs().write_escaped(Name, /*UseHexEscapes=*/true) << "')\n";
+  outs() << "  ('vm_addr', " << VMAddr << ")\n";
+  outs() << "  ('vm_size', " << VMSize << ")\n";
+  outs() << "  ('file_offset', " << FileOffset << ")\n";
+  outs() << "  ('file_size', " << FileSize << ")\n";
+  outs() << "  ('maxprot', " << MaxProt << ")\n";
+  outs() << "  ('initprot', " << InitProt << ")\n";
+  outs() << "  ('num_sections', " << NumSections << ")\n";
+  outs() << "  ('flags', " << Flags << ")\n";
+}
+
+static int DumpSectionData(MachOObject &Obj, unsigned Index, StringRef Name,
+                           StringRef SegmentName, uint64_t Address,
+                           uint64_t Size, uint32_t Offset,
+                           uint32_t Align, uint32_t RelocationTableOffset,
+                           uint32_t NumRelocationTableEntries,
+                           uint32_t Flags, uint32_t Reserved1,
+                           uint32_t Reserved2, uint64_t Reserved3 = ~0ULL) {
+  outs() << "    # Section " << Index << "\n";
+  outs() << "   (('section_name', '";
+  outs().write_escaped(Name, /*UseHexEscapes=*/true) << "')\n";
+  outs() << "    ('segment_name', '";
+  outs().write_escaped(SegmentName, /*UseHexEscapes=*/true) << "')\n";
+  outs() << "    ('address', " << Address << ")\n";
+  outs() << "    ('size', " << Size << ")\n";
+  outs() << "    ('offset', " << Offset << ")\n";
+  outs() << "    ('alignment', " << Align << ")\n";
+  outs() << "    ('reloc_offset', " << RelocationTableOffset << ")\n";
+  outs() << "    ('num_reloc', " << NumRelocationTableEntries << ")\n";
+  outs() << "    ('flags', " << format("0x%x", Flags) << ")\n";
+  outs() << "    ('reserved1', " << Reserved1 << ")\n";
+  outs() << "    ('reserved2', " << Reserved2 << ")\n";
+  if (Reserved3 != ~0ULL)
+    outs() << "    ('reserved3', " << Reserved3 << ")\n";
+  outs() << "   ),\n";
+
+  // Dump the relocation entries.
+  int Res = 0;
+  outs() << "  ('_relocations', [\n";
+  for (unsigned i = 0; i != NumRelocationTableEntries; ++i) {
+    InMemoryStruct<macho::RelocationEntry> RE;
+    Obj.ReadRelocationEntry(RelocationTableOffset, i, RE);
+    if (!RE) {
+      Res = Error("unable to read relocation table entry '" + Twine(i) + "'");
+      break;
+    }
+    
+    outs() << "    # Relocation " << i << "\n";
+    outs() << "    (('word-0', " << format("0x%x", RE->Word0) << "),\n";
+    outs() << "     ('word-1', " << format("0x%x", RE->Word1) << ")),\n";
+  }
+  outs() << "  ])\n";
+
+  // Dump the section data, if requested.
+  if (ShowSectionData) {
+    outs() << "  ('_section_data', '";
+    StringRef Data = Obj.getData(Offset, Size);
+    for (unsigned i = 0; i != Data.size(); ++i) {
+      if (i && (i % 4) == 0)
+        outs() << ' ';
+      outs() << hexdigit((Data[i] >> 4) & 0xF, /*LowerCase=*/true);
+      outs() << hexdigit((Data[i] >> 0) & 0xF, /*LowerCase=*/true);
+    }
+    outs() << "')\n";
+  }
+
+  return Res;
+}
+
+static int DumpSegmentCommand(MachOObject &Obj,
+                               const MachOObject::LoadCommandInfo &LCI) {
+  InMemoryStruct<macho::SegmentLoadCommand> SLC;
+  Obj.ReadSegmentLoadCommand(LCI, SLC);
+  if (!SLC)
+    return Error("unable to read segment load command");
+
+  DumpSegmentCommandData(StringRef(SLC->Name, 16), SLC->VMAddress,
+                         SLC->VMSize, SLC->FileOffset, SLC->FileSize,
+                         SLC->MaxVMProtection, SLC->InitialVMProtection,
+                         SLC->NumSections, SLC->Flags);
+
+  // Dump the sections.
+  int Res = 0;
+  outs() << "  ('sections', [\n";
+  for (unsigned i = 0; i != SLC->NumSections; ++i) {
+    InMemoryStruct<macho::Section> Sect;
+    Obj.ReadSection(LCI, i, Sect);
+    if (!SLC) {
+      Res = Error("unable to read section '" + Twine(i) + "'");
+      break;
+    }
+
+    if ((Res = DumpSectionData(Obj, i, StringRef(Sect->Name, 16),
+                               StringRef(Sect->SegmentName, 16), Sect->Address,
+                               Sect->Size, Sect->Offset, Sect->Align,
+                               Sect->RelocationTableOffset,
+                               Sect->NumRelocationTableEntries, Sect->Flags,
+                               Sect->Reserved1, Sect->Reserved2)))
+      break;
+  }
+  outs() << "  ])\n";
+
+  return Res;
+}
+
+static int DumpSegment64Command(MachOObject &Obj,
+                               const MachOObject::LoadCommandInfo &LCI) {
+  InMemoryStruct<macho::Segment64LoadCommand> SLC;
+  Obj.ReadSegment64LoadCommand(LCI, SLC);
+  if (!SLC)
+    return Error("unable to read segment load command");
+
+  DumpSegmentCommandData(StringRef(SLC->Name, 16), SLC->VMAddress,
+                         SLC->VMSize, SLC->FileOffset, SLC->FileSize,
+                         SLC->MaxVMProtection, SLC->InitialVMProtection,
+                         SLC->NumSections, SLC->Flags);
+
+  // Dump the sections.
+  int Res = 0;
+  outs() << "  ('sections', [\n";
+  for (unsigned i = 0; i != SLC->NumSections; ++i) {
+    InMemoryStruct<macho::Section64> Sect;
+    Obj.ReadSection64(LCI, i, Sect);
+    if (!SLC) {
+      Res = Error("unable to read section '" + Twine(i) + "'");
+      break;
+    }
+
+    if ((Res = DumpSectionData(Obj, i, StringRef(Sect->Name, 16),
+                               StringRef(Sect->SegmentName, 16), Sect->Address,
+                               Sect->Size, Sect->Offset, Sect->Align,
+                               Sect->RelocationTableOffset,
+                               Sect->NumRelocationTableEntries, Sect->Flags,
+                               Sect->Reserved1, Sect->Reserved2,
+                               Sect->Reserved3)))
+      break;
+  }
+  outs() << "  ])\n";
+
+  return 0;
+}
+
+static void DumpSymbolTableEntryData(MachOObject &Obj,
+                                     unsigned Index, uint32_t StringIndex,
+                                     uint8_t Type, uint8_t SectionIndex,
+                                     uint16_t Flags, uint64_t Value) {
+  outs() << "    # Symbol " << Index << "\n";
+  outs() << "   (('n_strx', " << StringIndex << ")\n";
+  outs() << "    ('n_type', " << format("0x%x", Type) << ")\n";
+  outs() << "    ('n_sect', " << uint32_t(SectionIndex) << ")\n";
+  outs() << "    ('n_desc', " << Flags << ")\n";
+  outs() << "    ('n_value', " << Value << ")\n";
+  outs() << "    ('_string', '" << Obj.getStringAtIndex(StringIndex) << "')\n";
+  outs() << "   ),\n";
+}
+
+static int DumpSymtabCommand(MachOObject &Obj,
+                             const MachOObject::LoadCommandInfo &LCI) {
+  InMemoryStruct<macho::SymtabLoadCommand> SLC;
+  Obj.ReadSymtabLoadCommand(LCI, SLC);
+  if (!SLC)
+    return Error("unable to read segment load command");
+
+  outs() << "  ('symoff', " << SLC->SymbolTableOffset << ")\n";
+  outs() << "  ('nsyms', " << SLC->NumSymbolTableEntries << ")\n";
+  outs() << "  ('stroff', " << SLC->StringTableOffset << ")\n";
+  outs() << "  ('strsize', " << SLC->StringTableSize << ")\n";
+
+  // Cache the string table data.
+  Obj.RegisterStringTable(*SLC);
+
+  // Dump the string data.
+  outs() << "  ('_string_data', '";
+  outs().write_escaped(Obj.getStringTableData(),
+                       /*UseHexEscapes=*/true) << "')\n";
+
+  // Dump the symbol table.
+  int Res = 0;
+  outs() << "  ('_symbols', [\n";
+  for (unsigned i = 0; i != SLC->NumSymbolTableEntries; ++i) {
+    if (Obj.is64Bit()) {
+      InMemoryStruct<macho::Symbol64TableEntry> STE;
+      Obj.ReadSymbol64TableEntry(SLC->SymbolTableOffset, i, STE);
+      if (!STE) {
+        Res = Error("unable to read symbol: '" + Twine(i) + "'");
+        break;
+      }
+
+      DumpSymbolTableEntryData(Obj, i, STE->StringIndex, STE->Type,
+                               STE->SectionIndex, STE->Flags, STE->Value);
+    } else {
+      InMemoryStruct<macho::SymbolTableEntry> STE;
+      Obj.ReadSymbolTableEntry(SLC->SymbolTableOffset, i, STE);
+      if (!SLC) {
+        Res = Error("unable to read symbol: '" + Twine(i) + "'");
+        break;
+      }
+
+      DumpSymbolTableEntryData(Obj, i, STE->StringIndex, STE->Type,
+                               STE->SectionIndex, STE->Flags, STE->Value);
+    }
+  }
+  outs() << "  ])\n";
+
+  return Res;
+}
+
+static int DumpDysymtabCommand(MachOObject &Obj,
+                             const MachOObject::LoadCommandInfo &LCI) {
+  InMemoryStruct<macho::DysymtabLoadCommand> DLC;
+  Obj.ReadDysymtabLoadCommand(LCI, DLC);
+  if (!DLC)
+    return Error("unable to read segment load command");
+
+  outs() << "  ('ilocalsym', " << DLC->LocalSymbolsIndex << ")\n";
+  outs() << "  ('nlocalsym', " << DLC->NumLocalSymbols << ")\n";
+  outs() << "  ('iextdefsym', " << DLC->ExternalSymbolsIndex << ")\n";
+  outs() << "  ('nextdefsym', " << DLC->NumExternalSymbols << ")\n";
+  outs() << "  ('iundefsym', " << DLC->UndefinedSymbolsIndex << ")\n";
+  outs() << "  ('nundefsym', " << DLC->NumUndefinedSymbols << ")\n";
+  outs() << "  ('tocoff', " << DLC->TOCOffset << ")\n";
+  outs() << "  ('ntoc', " << DLC->NumTOCEntries << ")\n";
+  outs() << "  ('modtaboff', " << DLC->ModuleTableOffset << ")\n";
+  outs() << "  ('nmodtab', " << DLC->NumModuleTableEntries << ")\n";
+  outs() << "  ('extrefsymoff', " << DLC->ReferenceSymbolTableOffset << ")\n";
+  outs() << "  ('nextrefsyms', "
+         << DLC->NumReferencedSymbolTableEntries << ")\n";
+  outs() << "  ('indirectsymoff', " << DLC->IndirectSymbolTableOffset << ")\n";
+  outs() << "  ('nindirectsyms', "
+         << DLC->NumIndirectSymbolTableEntries << ")\n";
+  outs() << "  ('extreloff', " << DLC->ExternalRelocationTableOffset << ")\n";
+  outs() << "  ('nextrel', " << DLC->NumExternalRelocationTableEntries << ")\n";
+  outs() << "  ('locreloff', " << DLC->LocalRelocationTableOffset << ")\n";
+  outs() << "  ('nlocrel', " << DLC->NumLocalRelocationTableEntries << ")\n";
+
+  // Dump the indirect symbol table.
+  int Res = 0;
+  outs() << "  ('_indirect_symbols', [\n";
+  for (unsigned i = 0; i != DLC->NumIndirectSymbolTableEntries; ++i) {
+    InMemoryStruct<macho::IndirectSymbolTableEntry> ISTE;
+    Obj.ReadIndirectSymbolTableEntry(*DLC, i, ISTE);
+    if (!ISTE) {
+      Res = Error("unable to read segment load command");
+      break;
+    }
+
+    outs() << "    # Indirect Symbol " << i << "\n";
+    outs() << "    (('symbol_index', "
+           << format("0x%x", ISTE->Index) << "),),\n";
+  }
+  outs() << "  ])\n";
+
+  return Res;
+}
+
+static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
+  const MachOObject::LoadCommandInfo &LCI = Obj.getLoadCommandInfo(Index);
+  int Res = 0;
+
+  outs() << "  # Load Command " << Index << "\n"
+         << " (('command', " << LCI.Command.Type << ")\n"
+         << "  ('size', " << LCI.Command.Size << ")\n";
+  switch (LCI.Command.Type) {
+  case macho::LCT_Segment:
+    Res = DumpSegmentCommand(Obj, LCI);
+    break;
+  case macho::LCT_Segment64:
+    Res = DumpSegment64Command(Obj, LCI);
+    break;
+  case macho::LCT_Symtab:
+    Res = DumpSymtabCommand(Obj, LCI);
+    break;
+  case macho::LCT_Dysymtab:
+    Res = DumpDysymtabCommand(Obj, LCI);
+    break;
+  default:
+    Warning("unknown load command: " + Twine(LCI.Command.Type));
+    break;
+  }
+  outs() << " ),\n";
+
+  return Res;
+}
+
+int main(int argc, char **argv) {
+  ProgramName = argv[0];
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+
+  cl::ParseCommandLineOptions(argc, argv, "llvm Mach-O dumping tool\n");
+
+  // Load the input file.
+  std::string ErrorStr;
+  OwningPtr<MemoryBuffer> InputBuffer;
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFile, InputBuffer))
+    return Error("unable to read input: '" + ec.message() + "'");
+
+  // Construct the Mach-O wrapper object.
+  OwningPtr<MachOObject> InputObject(
+    MachOObject::LoadFromBuffer(InputBuffer.take(), &ErrorStr));
+  if (!InputObject)
+    return Error("unable to load object: '" + ErrorStr + "'");
+
+  if (int Res = DumpHeader(*InputObject))
+    return Res;
+
+  // Print the load commands.
+  int Res = 0;
+  outs() << "('load_commands', [\n";
+  for (unsigned i = 0; i != InputObject->getHeader().NumLoadCommands; ++i)
+    if ((Res = DumpLoadCommand(*InputObject, i)))
+      break;
+  outs() << "])\n";
+
+  return Res;
+}
diff --git a/tools/opt/GraphPrinters.cpp b/tools/opt/GraphPrinters.cpp
index 9de7d6a..791caf5 100644
--- a/tools/opt/GraphPrinters.cpp
+++ b/tools/opt/GraphPrinters.cpp
@@ -18,8 +18,8 @@
 #include "llvm/Pass.h"
 #include "llvm/Value.h"
 #include "llvm/Analysis/CallGraph.h"
-#include "llvm/Analysis/Dominators.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Analysis/DominanceFrontier.h"
+#include "llvm/Support/ToolOutputFile.h"
 using namespace llvm;
 
 template<typename GraphType>
@@ -61,8 +61,7 @@ namespace llvm {
     static std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
       if (Node->getFunction())
         return ((Value*)Node->getFunction())->getName();
-      else
-        return "external node";
+      return "external node";
     }
   };
 }
@@ -109,10 +108,8 @@ namespace {
     }
 
     virtual bool runOnFunction(Function &F) {
-      DominatorTree &DT = getAnalysis<DominatorTree>();
-      DT.dump();
-      DominanceFrontier &DF = getAnalysis<DominanceFrontier>();
-      DF.dump();
+      getAnalysis<DominatorTree>().dump();
+      getAnalysis<DominanceFrontier>().dump();
       return false;
     }
   };
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index d837185..e55b4b3 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -18,13 +18,17 @@
 #include "llvm/CallGraphSCCPass.h"
 #include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/Assembly/PrintModulePass.h"
+#include "llvm/Analysis/DebugInfo.h"
 #include "llvm/Analysis/Verifier.h"
 #include "llvm/Analysis/LoopPass.h"
+#include "llvm/Analysis/RegionPass.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLibraryInfo.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/Support/PassNameParser.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/IRReader.h"
 #include "llvm/Support/ManagedStatic.h"
@@ -32,7 +36,7 @@
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/StandardPasses.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/ToolOutputFile.h"
 #include "llvm/LinkAllPasses.h"
 #include "llvm/LinkAllVMCore.h"
 #include <memory>
@@ -127,6 +131,10 @@ QuietA("quiet", cl::desc("Alias for -q"), cl::aliasopt(Quiet));
 static cl::opt<bool>
 AnalyzeOnly("analyze", cl::desc("Only perform analysis, no optimization"));
 
+static cl::opt<bool>
+PrintBreakpoints("print-breakpoints-for-testing", 
+                 cl::desc("Print select breakpoints location for testing"));
+
 static cl::opt<std::string>
 DefaultDataLayout("default-data-layout", 
           cl::desc("data layout string to use if not specified by module"),
@@ -139,25 +147,29 @@ struct CallGraphSCCPassPrinter : public CallGraphSCCPass {
   static char ID;
   const PassInfo *PassToPrint;
   raw_ostream &Out;
+  std::string PassName;
+
   CallGraphSCCPassPrinter(const PassInfo *PI, raw_ostream &out) :
-    CallGraphSCCPass(ID), PassToPrint(PI), Out(out) {}
+    CallGraphSCCPass(ID), PassToPrint(PI), Out(out) {
+      std::string PassToPrintName =  PassToPrint->getPassName();
+      PassName = "CallGraphSCCPass Printer: " + PassToPrintName;
+    }
 
   virtual bool runOnSCC(CallGraphSCC &SCC) {
-    if (!Quiet) {
+    if (!Quiet)
       Out << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
 
-      for (CallGraphSCC::iterator I = SCC.begin(), E = SCC.end(); I != E; ++I) {
-        Function *F = (*I)->getFunction();
-        if (F)
-          getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out, 
-                F->getParent());
-      }
-    }
     // Get and print pass...
+    for (CallGraphSCC::iterator I = SCC.begin(), E = SCC.end(); I != E; ++I) {
+      Function *F = (*I)->getFunction();
+      if (F)
+        getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
+                                                              F->getParent());
+    }
     return false;
   }
 
-  virtual const char *getPassName() const { return "'Pass' Printer"; }
+  virtual const char *getPassName() const { return PassName.c_str(); }
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequiredID(PassToPrint->getTypeInfo());
@@ -171,20 +183,24 @@ struct ModulePassPrinter : public ModulePass {
   static char ID;
   const PassInfo *PassToPrint;
   raw_ostream &Out;
+  std::string PassName;
+
   ModulePassPrinter(const PassInfo *PI, raw_ostream &out)
-    : ModulePass(ID), PassToPrint(PI), Out(out) {}
+    : ModulePass(ID), PassToPrint(PI), Out(out) {
+      std::string PassToPrintName =  PassToPrint->getPassName();
+      PassName = "ModulePass Printer: " + PassToPrintName;
+    }
 
   virtual bool runOnModule(Module &M) {
-    if (!Quiet) {
+    if (!Quiet)
       Out << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
-      getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out, &M);
-    }
 
     // Get and print pass...
+    getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out, &M);
     return false;
   }
 
-  virtual const char *getPassName() const { return "'Pass' Printer"; }
+  virtual const char *getPassName() const { return PassName.c_str(); }
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequiredID(PassToPrint->getTypeInfo());
@@ -197,21 +213,26 @@ struct FunctionPassPrinter : public FunctionPass {
   const PassInfo *PassToPrint;
   raw_ostream &Out;
   static char ID;
+  std::string PassName;
+
   FunctionPassPrinter(const PassInfo *PI, raw_ostream &out)
-    : FunctionPass(ID), PassToPrint(PI), Out(out) {}
+    : FunctionPass(ID), PassToPrint(PI), Out(out) {
+      std::string PassToPrintName =  PassToPrint->getPassName();
+      PassName = "FunctionPass Printer: " + PassToPrintName;
+    }
 
   virtual bool runOnFunction(Function &F) {
-    if (!Quiet) {
+    if (!Quiet)
       Out << "Printing analysis '" << PassToPrint->getPassName()
           << "' for function '" << F.getName() << "':\n";
-    }
+
     // Get and print pass...
     getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
             F.getParent());
     return false;
   }
 
-  virtual const char *getPassName() const { return "FunctionPass Printer"; }
+  virtual const char *getPassName() const { return PassName.c_str(); }
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequiredID(PassToPrint->getTypeInfo());
@@ -225,20 +246,26 @@ struct LoopPassPrinter : public LoopPass {
   static char ID;
   const PassInfo *PassToPrint;
   raw_ostream &Out;
+  std::string PassName;
+
   LoopPassPrinter(const PassInfo *PI, raw_ostream &out) :
-    LoopPass(ID), PassToPrint(PI), Out(out) {}
+    LoopPass(ID), PassToPrint(PI), Out(out) {
+      std::string PassToPrintName =  PassToPrint->getPassName();
+      PassName = "LoopPass Printer: " + PassToPrintName;
+    }
+
 
   virtual bool runOnLoop(Loop *L, LPPassManager &LPM) {
-    if (!Quiet) {
+    if (!Quiet)
       Out << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
-      getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
-                                  L->getHeader()->getParent()->getParent());
-    }
+
     // Get and print pass...
+    getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
+                        L->getHeader()->getParent()->getParent());
     return false;
   }
 
-  virtual const char *getPassName() const { return "'Pass' Printer"; }
+  virtual const char *getPassName() const { return PassName.c_str(); }
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequiredID(PassToPrint->getTypeInfo());
@@ -248,18 +275,56 @@ struct LoopPassPrinter : public LoopPass {
 
 char LoopPassPrinter::ID = 0;
 
+struct RegionPassPrinter : public RegionPass {
+  static char ID;
+  const PassInfo *PassToPrint;
+  raw_ostream &Out;
+  std::string PassName;
+
+  RegionPassPrinter(const PassInfo *PI, raw_ostream &out) : RegionPass(ID),
+    PassToPrint(PI), Out(out) {
+    std::string PassToPrintName =  PassToPrint->getPassName();
+    PassName = "RegionPass Printer: " + PassToPrintName;
+  }
+
+  virtual bool runOnRegion(Region *R, RGPassManager &RGM) {
+    if (!Quiet) {
+      Out << "Printing analysis '" << PassToPrint->getPassName() << "' for "
+        << "region: '" << R->getNameStr() << "' in function '"
+        << R->getEntry()->getParent()->getNameStr() << "':\n";
+    }
+    // Get and print pass...
+   getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
+                       R->getEntry()->getParent()->getParent());
+    return false;
+  }
+
+  virtual const char *getPassName() const { return PassName.c_str(); }
+
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.addRequiredID(PassToPrint->getTypeInfo());
+    AU.setPreservesAll();
+  }
+};
+
+char RegionPassPrinter::ID = 0;
+
 struct BasicBlockPassPrinter : public BasicBlockPass {
   const PassInfo *PassToPrint;
   raw_ostream &Out;
   static char ID;
+  std::string PassName;
+
   BasicBlockPassPrinter(const PassInfo *PI, raw_ostream &out)
-    : BasicBlockPass(ID), PassToPrint(PI), Out(out) {}
+    : BasicBlockPass(ID), PassToPrint(PI), Out(out) {
+      std::string PassToPrintName =  PassToPrint->getPassName();
+      PassName = "BasicBlockPass Printer: " + PassToPrintName;
+    }
 
   virtual bool runOnBasicBlock(BasicBlock &BB) {
-    if (!Quiet) {
+    if (!Quiet)
       Out << "Printing Analysis info for BasicBlock '" << BB.getName()
           << "': Pass " << PassToPrint->getPassName() << ":\n";
-    }
 
     // Get and print pass...
     getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out, 
@@ -267,7 +332,7 @@ struct BasicBlockPassPrinter : public BasicBlockPass {
     return false;
   }
 
-  virtual const char *getPassName() const { return "BasicBlockPass Printer"; }
+  virtual const char *getPassName() const { return PassName.c_str(); }
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequiredID(PassToPrint->getTypeInfo());
@@ -276,6 +341,39 @@ struct BasicBlockPassPrinter : public BasicBlockPass {
 };
 
 char BasicBlockPassPrinter::ID = 0;
+
+struct BreakpointPrinter : public FunctionPass {
+  raw_ostream &Out;
+  static char ID;
+
+  BreakpointPrinter(raw_ostream &out)
+    : FunctionPass(ID), Out(out) {
+    }
+
+  virtual bool runOnFunction(Function &F) {
+    BasicBlock &EntryBB = F.getEntryBlock();
+    BasicBlock::const_iterator BI = EntryBB.end();
+    --BI;
+    do {
+      const Instruction *In = BI;
+      const DebugLoc DL = In->getDebugLoc();
+      if (!DL.isUnknown()) {
+        DIScope S(DL.getScope(getGlobalContext()));
+        Out << S.getFilename() << " " << DL.getLine() << "\n";
+        break;
+      }
+      --BI;
+    } while (BI != EntryBB.begin());
+    return false;
+  }
+
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.setPreservesAll();
+  }
+};
+
+char BreakpointPrinter::ID = 0;
+
 inline void addPass(PassManagerBase &PM, Pass *P) {
   // Add the pass to the pass manager...
   PM.add(P);
@@ -297,9 +395,9 @@ void AddOptimizationPasses(PassManagerBase &MPM, PassManagerBase &FPM,
   if (DisableInline) {
     // No inlining pass
   } else if (OptLevel) {
-    unsigned Threshold = 200;
+    unsigned Threshold = 225;
     if (OptLevel > 2)
-      Threshold = 250;
+      Threshold = 275;
     InliningPass = createFunctionInliningPass(Threshold);
   } else {
     InliningPass = createAlwaysInlinerPass();
@@ -331,7 +429,7 @@ void AddStandardCompilePasses(PassManagerBase &PM) {
                              /*OptimizeSize=*/ false,
                              /*UnitAtATime=*/ true,
                              /*UnrollLoops=*/ true,
-                             /*SimplifyLibCalls=*/ true,
+                             !DisableSimplifyLibCalls,
                              /*HaveExceptions=*/ true,
                              InliningPass);
 }
@@ -360,20 +458,32 @@ int main(int argc, char **argv) {
   sys::PrintStackTraceOnErrorSignal();
   llvm::PrettyStackTraceProgram X(argc, argv);
 
-  if (AnalyzeOnly && NoOutput) {
-    errs() << argv[0] << ": analyze mode conflicts with no-output mode.\n";
-    return 1;
-  }
-  
   // Enable debug stream buffering.
   EnableDebugBuffering = true;
 
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
   LLVMContext &Context = getGlobalContext();
   
+  // Initialize passes
+  PassRegistry &Registry = *PassRegistry::getPassRegistry();
+  initializeCore(Registry);
+  initializeScalarOpts(Registry);
+  initializeIPO(Registry);
+  initializeAnalysis(Registry);
+  initializeIPA(Registry);
+  initializeTransformUtils(Registry);
+  initializeInstCombine(Registry);
+  initializeInstrumentation(Registry);
+  initializeTarget(Registry);
+  
   cl::ParseCommandLineOptions(argc, argv,
     "llvm .bc -> .bc modular optimizer and analysis printer\n");
 
+  if (AnalyzeOnly && NoOutput) {
+    errs() << argv[0] << ": analyze mode conflicts with no-output mode.\n";
+    return 1;
+  }
+
   // Allocate a full target machine description only if necessary.
   // FIXME: The choice of target should be controllable on the command line.
   std::auto_ptr<TargetMachine> target;
@@ -417,11 +527,19 @@ int main(int argc, char **argv) {
       NoOutput = true;
 
   // Create a PassManager to hold and optimize the collection of passes we are
-  // about to build...
+  // about to build.
   //
   PassManager Passes;
 
-  // Add an appropriate TargetData instance for this module...
+  // Add an appropriate TargetLibraryInfo pass for the module's triple.
+  TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));
+  
+  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
+  if (DisableSimplifyLibCalls)
+    TLI->disableAllFunctions();
+  Passes.add(TLI);
+  
+  // Add an appropriate TargetData instance for this module.
   TargetData *TD = 0;
   const std::string &ModuleDataLayout = M.get()->getDataLayout();
   if (!ModuleDataLayout.empty())
@@ -439,6 +557,24 @@ int main(int argc, char **argv) {
       FPasses->add(new TargetData(*TD));
   }
 
+  if (PrintBreakpoints) {
+    // Default to standard output.
+    if (!Out) {
+      if (OutputFilename.empty())
+        OutputFilename = "-";
+      
+      std::string ErrorInfo;
+      Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
+                                     raw_fd_ostream::F_Binary));
+      if (!ErrorInfo.empty()) {
+        errs() << ErrorInfo << '\n';
+        return 1;
+      }
+    }
+    Passes.add(new BreakpointPrinter(Out->os()));
+    NoOutput = true;
+  }
+
   // If the -strip-debug command line option was specified, add it.  If
   // -std-compile-opts was also specified, it will handle StripDebug.
   if (StripDebug && !StandardCompileOpts)
@@ -491,6 +627,9 @@ int main(int argc, char **argv) {
         case PT_BasicBlock:
           Passes.add(new BasicBlockPassPrinter(PassInf, Out->os()));
           break;
+        case PT_Region:
+          Passes.add(new RegionPassPrinter(PassInf, Out->os()));
+          break;
         case PT_Loop:
           Passes.add(new LoopPassPrinter(PassInf, Out->os()));
           break;
@@ -550,7 +689,7 @@ int main(int argc, char **argv) {
   Passes.run(*M.get());
 
   // Declare success.
-  if (!NoOutput)
+  if (!NoOutput || PrintBreakpoints)
     Out->keep();
 
   return 0;