diff --git a/llvm/lib/Support/Path.cpp b/llvm/lib/Support/Path.cpp
new file mode 100644
index 0000000..8b9e60a
--- /dev/null
+++ b/llvm/lib/Support/Path.cpp
@@ -0,0 +1,969 @@
+//===-- Path.cpp - Implement OS Path Concept ------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file implements the operating system Path API.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
+#include <cctype>
+#include <cstdio>
+#include <cstring>
+
+#if !defined(_MSC_VER) && !defined(__MINGW32__)
+#include <unistd.h>
+#else
+#include <io.h>
+#endif
+
+namespace {
+  using llvm::StringRef;
+  using llvm::sys::path::is_separator;
+
+#ifdef LLVM_ON_WIN32
+  const char *separators = "\\/";
+  const char  prefered_separator = '\\';
+#else
+  const char  separators = '/';
+  const char  prefered_separator = '/';
+#endif
+
+  StringRef find_first_component(StringRef path) {
+    // Look for this first component in the following order.
+    // * empty (in this case we return an empty string)
+    // * either C: or {//,\\}net.
+    // * {/,\}
+    // * {.,..}
+    // * {file,directory}name
+
+    if (path.empty())
+      return path;
+
+#ifdef LLVM_ON_WIN32
+    // C:
+    if (path.size() >= 2 && std::isalpha(static_cast<unsigned char>(path[0])) &&
+        path[1] == ':')
+      return path.substr(0, 2);
+#endif
+
+    // //net
+    if ((path.size() > 2) &&
+        is_separator(path[0]) &&
+        path[0] == path[1] &&
+        !is_separator(path[2])) {
+      // Find the next directory separator.
+      size_t end = path.find_first_of(separators, 2);
+      return path.substr(0, end);
+    }
+
+    // {/,\}
+    if (is_separator(path[0]))
+      return path.substr(0, 1);
+
+    if (path.startswith(".."))
+      return path.substr(0, 2);
+
+    if (path[0] == '.')
+      return path.substr(0, 1);
+
+    // * {file,directory}name
+    size_t end = path.find_first_of(separators, 2);
+    return path.substr(0, end);
+  }
+
+  size_t filename_pos(StringRef str) {
+    if (str.size() == 2 &&
+        is_separator(str[0]) &&
+        str[0] == str[1])
+      return 0;
+
+    if (str.size() > 0 && is_separator(str[str.size() - 1]))
+      return str.size() - 1;
+
+    size_t pos = str.find_last_of(separators, str.size() - 1);
+
+#ifdef LLVM_ON_WIN32
+    if (pos == StringRef::npos)
+      pos = str.find_last_of(':', str.size() - 2);
+#endif
+
+    if (pos == StringRef::npos ||
+        (pos == 1 && is_separator(str[0])))
+      return 0;
+
+    return pos + 1;
+  }
+
+  size_t root_dir_start(StringRef str) {
+    // case "c:/"
+#ifdef LLVM_ON_WIN32
+    if (str.size() > 2 &&
+        str[1] == ':' &&
+        is_separator(str[2]))
+      return 2;
+#endif
+
+    // case "//"
+    if (str.size() == 2 &&
+        is_separator(str[0]) &&
+        str[0] == str[1])
+      return StringRef::npos;
+
+    // case "//net"
+    if (str.size() > 3 &&
+        is_separator(str[0]) &&
+        str[0] == str[1] &&
+        !is_separator(str[2])) {
+      return str.find_first_of(separators, 2);
+    }
+
+    // case "/"
+    if (str.size() > 0 && is_separator(str[0]))
+      return 0;
+
+    return StringRef::npos;
+  }
+
+  size_t parent_path_end(StringRef path) {
+    size_t end_pos = filename_pos(path);
+
+    bool filename_was_sep = path.size() > 0 && is_separator(path[end_pos]);
+
+    // Skip separators except for root dir.
+    size_t root_dir_pos = root_dir_start(path.substr(0, end_pos));
+
+    while(end_pos > 0 &&
+          (end_pos - 1) != root_dir_pos &&
+          is_separator(path[end_pos - 1]))
+      --end_pos;
+
+    if (end_pos == 1 && root_dir_pos == 0 && filename_was_sep)
+      return StringRef::npos;
+
+    return end_pos;
+  }
+} // end unnamed namespace
+
+namespace llvm {
+namespace sys  {
+namespace path {
+
+const_iterator begin(StringRef path) {
+  const_iterator i;
+  i.Path      = path;
+  i.Component = find_first_component(path);
+  i.Position  = 0;
+  return i;
+}
+
+const_iterator end(StringRef path) {
+  const_iterator i;
+  i.Path      = path;
+  i.Position  = path.size();
+  return i;
+}
+
+const_iterator &const_iterator::operator++() {
+  assert(Position < Path.size() && "Tried to increment past end!");
+
+  // Increment Position to past the current component
+  Position += Component.size();
+
+  // Check for end.
+  if (Position == Path.size()) {
+    Component = StringRef();
+    return *this;
+  }
+
+  // Both POSIX and Windows treat paths that begin with exactly two separators
+  // specially.
+  bool was_net = Component.size() > 2 &&
+    is_separator(Component[0]) &&
+    Component[1] == Component[0] &&
+    !is_separator(Component[2]);
+
+  // Handle separators.
+  if (is_separator(Path[Position])) {
+    // Root dir.
+    if (was_net
+#ifdef LLVM_ON_WIN32
+        // c:/
+        || Component.endswith(":")
+#endif
+        ) {
+      Component = Path.substr(Position, 1);
+      return *this;
+    }
+
+    // Skip extra separators.
+    while (Position != Path.size() &&
+           is_separator(Path[Position])) {
+      ++Position;
+    }
+
+    // Treat trailing '/' as a '.'.
+    if (Position == Path.size()) {
+      --Position;
+      Component = ".";
+      return *this;
+    }
+  }
+
+  // Find next component.
+  size_t end_pos = Path.find_first_of(separators, Position);
+  Component = Path.slice(Position, end_pos);
+
+  return *this;
+}
+
+const_iterator &const_iterator::operator--() {
+  // If we're at the end and the previous char was a '/', return '.'.
+  if (Position == Path.size() &&
+      Path.size() > 1 &&
+      is_separator(Path[Position - 1])
+#ifdef LLVM_ON_WIN32
+      && Path[Position - 2] != ':'
+#endif
+      ) {
+    --Position;
+    Component = ".";
+    return *this;
+  }
+
+  // Skip separators unless it's the root directory.
+  size_t root_dir_pos = root_dir_start(Path);
+  size_t end_pos = Position;
+
+  while(end_pos > 0 &&
+        (end_pos - 1) != root_dir_pos &&
+        is_separator(Path[end_pos - 1]))
+    --end_pos;
+
+  // Find next separator.
+  size_t start_pos = filename_pos(Path.substr(0, end_pos));
+  Component = Path.slice(start_pos, end_pos);
+  Position = start_pos;
+  return *this;
+}
+
+bool const_iterator::operator==(const const_iterator &RHS) const {
+  return Path.begin() == RHS.Path.begin() &&
+         Position == RHS.Position;
+}
+
+bool const_iterator::operator!=(const const_iterator &RHS) const {
+  return !(*this == RHS);
+}
+
+ptrdiff_t const_iterator::operator-(const const_iterator &RHS) const {
+  return Position - RHS.Position;
+}
+
+const StringRef root_path(StringRef path) {
+  const_iterator b = begin(path),
+                 pos = b,
+                 e = end(path);
+  if (b != e) {
+    bool has_net = b->size() > 2 && is_separator((*b)[0]) && (*b)[1] == (*b)[0];
+    bool has_drive =
+#ifdef LLVM_ON_WIN32
+      b->endswith(":");
+#else
+      false;
+#endif
+
+    if (has_net || has_drive) {
+      if ((++pos != e) && is_separator((*pos)[0])) {
+        // {C:/,//net/}, so get the first two components.
+        return path.substr(0, b->size() + pos->size());
+      } else {
+        // just {C:,//net}, return the first component.
+        return *b;
+      }
+    }
+
+    // POSIX style root directory.
+    if (is_separator((*b)[0])) {
+      return *b;
+    }
+  }
+
+  return StringRef();
+}
+
+const StringRef root_name(StringRef path) {
+  const_iterator b = begin(path),
+                 e = end(path);
+  if (b != e) {
+    bool has_net = b->size() > 2 && is_separator((*b)[0]) && (*b)[1] == (*b)[0];
+    bool has_drive =
+#ifdef LLVM_ON_WIN32
+      b->endswith(":");
+#else
+      false;
+#endif
+
+    if (has_net || has_drive) {
+      // just {C:,//net}, return the first component.
+      return *b;
+    }
+  }
+
+  // No path or no name.
+  return StringRef();
+}
+
+const StringRef root_directory(StringRef path) {
+  const_iterator b = begin(path),
+                 pos = b,
+                 e = end(path);
+  if (b != e) {
+    bool has_net = b->size() > 2 && is_separator((*b)[0]) && (*b)[1] == (*b)[0];
+    bool has_drive =
+#ifdef LLVM_ON_WIN32
+      b->endswith(":");
+#else
+      false;
+#endif
+
+    if ((has_net || has_drive) &&
+        // {C:,//net}, skip to the next component.
+        (++pos != e) && is_separator((*pos)[0])) {
+      return *pos;
+    }
+
+    // POSIX style root directory.
+    if (!has_net && is_separator((*b)[0])) {
+      return *b;
+    }
+  }
+
+  // No path or no root.
+  return StringRef();
+}
+
+const StringRef relative_path(StringRef path) {
+  StringRef root = root_path(path);
+  return path.substr(root.size());
+}
+
+void append(SmallVectorImpl<char> &path, const Twine &a,
+                                         const Twine &b,
+                                         const Twine &c,
+                                         const Twine &d) {
+  SmallString<32> a_storage;
+  SmallString<32> b_storage;
+  SmallString<32> c_storage;
+  SmallString<32> d_storage;
+
+  SmallVector<StringRef, 4> components;
+  if (!a.isTriviallyEmpty()) components.push_back(a.toStringRef(a_storage));
+  if (!b.isTriviallyEmpty()) components.push_back(b.toStringRef(b_storage));
+  if (!c.isTriviallyEmpty()) components.push_back(c.toStringRef(c_storage));
+  if (!d.isTriviallyEmpty()) components.push_back(d.toStringRef(d_storage));
+
+  for (SmallVectorImpl<StringRef>::const_iterator i = components.begin(),
+                                                  e = components.end();
+                                                  i != e; ++i) {
+    bool path_has_sep = !path.empty() && is_separator(path[path.size() - 1]);
+    bool component_has_sep = !i->empty() && is_separator((*i)[0]);
+    bool is_root_name = has_root_name(*i);
+
+    if (path_has_sep) {
+      // Strip separators from beginning of component.
+      size_t loc = i->find_first_not_of(separators);
+      StringRef c = i->substr(loc);
+
+      // Append it.
+      path.append(c.begin(), c.end());
+      continue;
+    }
+
+    if (!component_has_sep && !(path.empty() || is_root_name)) {
+      // Add a separator.
+      path.push_back(prefered_separator);
+    }
+
+    path.append(i->begin(), i->end());
+  }
+}
+
+void append(SmallVectorImpl<char> &path,
+            const_iterator begin, const_iterator end) {
+  for (; begin != end; ++begin)
+    path::append(path, *begin);
+}
+
+const StringRef parent_path(StringRef path) {
+  size_t end_pos = parent_path_end(path);
+  if (end_pos == StringRef::npos)
+    return StringRef();
+  else
+    return path.substr(0, end_pos);
+}
+
+void remove_filename(SmallVectorImpl<char> &path) {
+  size_t end_pos = parent_path_end(StringRef(path.begin(), path.size()));
+  if (end_pos != StringRef::npos)
+    path.set_size(end_pos);
+}
+
+void replace_extension(SmallVectorImpl<char> &path, const Twine &extension) {
+  StringRef p(path.begin(), path.size());
+  SmallString<32> ext_storage;
+  StringRef ext = extension.toStringRef(ext_storage);
+
+  // Erase existing extension.
+  size_t pos = p.find_last_of('.');
+  if (pos != StringRef::npos && pos >= filename_pos(p))
+    path.set_size(pos);
+
+  // Append '.' if needed.
+  if (ext.size() > 0 && ext[0] != '.')
+    path.push_back('.');
+
+  // Append extension.
+  path.append(ext.begin(), ext.end());
+}
+
+void native(const Twine &path, SmallVectorImpl<char> &result) {
+  // Clear result.
+  result.clear();
+#ifdef LLVM_ON_WIN32
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+  result.reserve(p.size());
+  for (StringRef::const_iterator i = p.begin(),
+                                 e = p.end();
+                                 i != e;
+                                 ++i) {
+    if (*i == '/')
+      result.push_back('\\');
+    else
+      result.push_back(*i);
+  }
+#else
+  path.toVector(result);
+#endif
+}
+
+const StringRef filename(StringRef path) {
+  return *(--end(path));
+}
+
+const StringRef stem(StringRef path) {
+  StringRef fname = filename(path);
+  size_t pos = fname.find_last_of('.');
+  if (pos == StringRef::npos)
+    return fname;
+  else
+    if ((fname.size() == 1 && fname == ".") ||
+        (fname.size() == 2 && fname == ".."))
+      return fname;
+    else
+      return fname.substr(0, pos);
+}
+
+const StringRef extension(StringRef path) {
+  StringRef fname = filename(path);
+  size_t pos = fname.find_last_of('.');
+  if (pos == StringRef::npos)
+    return StringRef();
+  else
+    if ((fname.size() == 1 && fname == ".") ||
+        (fname.size() == 2 && fname == ".."))
+      return StringRef();
+    else
+      return fname.substr(pos);
+}
+
+bool is_separator(char value) {
+  switch(value) {
+#ifdef LLVM_ON_WIN32
+    case '\\': // fall through
+#endif
+    case '/': return true;
+    default: return false;
+  }
+}
+
+void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result) {
+  result.clear();
+
+#ifdef __APPLE__
+  // On Darwin, use DARWIN_USER_TEMP_DIR or DARWIN_USER_CACHE_DIR.
+  int ConfName = erasedOnReboot? _CS_DARWIN_USER_TEMP_DIR
+                               : _CS_DARWIN_USER_CACHE_DIR;
+  size_t ConfLen = confstr(ConfName, 0, 0);
+  if (ConfLen > 0) {
+    do {
+      result.resize(ConfLen);
+      ConfLen = confstr(ConfName, result.data(), result.size());
+    } while (ConfLen > 0 && ConfLen != result.size());
+
+    if (ConfLen > 0) {
+      assert(result.back() == 0);
+      result.pop_back();
+      return;
+    }
+
+    result.clear();
+  }
+#endif
+
+  // Check whether the temporary directory is specified by an environment
+  // variable.
+  const char *EnvironmentVariable;
+#ifdef LLVM_ON_WIN32
+  EnvironmentVariable = "TEMP";
+#else
+  EnvironmentVariable = "TMPDIR";
+#endif
+  if (char *RequestedDir = getenv(EnvironmentVariable)) {
+    result.append(RequestedDir, RequestedDir + strlen(RequestedDir));
+    return;
+  }
+
+  // Fall back to a system default.
+  const char *DefaultResult;
+#ifdef LLVM_ON_WIN32
+  (void)erasedOnReboot;
+  DefaultResult = "C:\\TEMP";
+#else
+  if (erasedOnReboot)
+    DefaultResult = "/tmp";
+  else
+    DefaultResult = "/var/tmp";
+#endif
+  result.append(DefaultResult, DefaultResult + strlen(DefaultResult));
+}
+
+bool has_root_name(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !root_name(p).empty();
+}
+
+bool has_root_directory(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !root_directory(p).empty();
+}
+
+bool has_root_path(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !root_path(p).empty();
+}
+
+bool has_relative_path(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !relative_path(p).empty();
+}
+
+bool has_filename(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !filename(p).empty();
+}
+
+bool has_parent_path(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !parent_path(p).empty();
+}
+
+bool has_stem(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !stem(p).empty();
+}
+
+bool has_extension(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  return !extension(p).empty();
+}
+
+bool is_absolute(const Twine &path) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  bool rootDir = has_root_directory(p),
+#ifdef LLVM_ON_WIN32
+       rootName = has_root_name(p);
+#else
+       rootName = true;
+#endif
+
+  return rootDir && rootName;
+}
+
+bool is_relative(const Twine &path) {
+  return !is_absolute(path);
+}
+
+} // end namespace path
+
+namespace fs {
+
+error_code unique_file(const Twine &Model, SmallVectorImpl<char> &ResultPath,
+                       bool MakeAbsolute, unsigned Mode) {
+  // FIXME: This is really inefficient. unique_path creates a path an tries to
+  // open it. We should factor the code so that we just don't create/open the
+  // file when we don't need it.
+  int FD;
+  error_code Ret = unique_file(Model, FD, ResultPath, MakeAbsolute, Mode);
+  if (Ret)
+    return Ret;
+
+  if (close(FD))
+    return error_code(errno, system_category());
+
+  StringRef P(ResultPath.begin(), ResultPath.size());
+  return fs::remove(P);
+}
+
+error_code make_absolute(SmallVectorImpl<char> &path) {
+  StringRef p(path.data(), path.size());
+
+  bool rootDirectory = path::has_root_directory(p),
+#ifdef LLVM_ON_WIN32
+       rootName = path::has_root_name(p);
+#else
+       rootName = true;
+#endif
+
+  // Already absolute.
+  if (rootName && rootDirectory)
+    return error_code::success();
+
+  // All of the following conditions will need the current directory.
+  SmallString<128> current_dir;
+  if (error_code ec = current_path(current_dir)) return ec;
+
+  // Relative path. Prepend the current directory.
+  if (!rootName && !rootDirectory) {
+    // Append path to the current directory.
+    path::append(current_dir, p);
+    // Set path to the result.
+    path.swap(current_dir);
+    return error_code::success();
+  }
+
+  if (!rootName && rootDirectory) {
+    StringRef cdrn = path::root_name(current_dir);
+    SmallString<128> curDirRootName(cdrn.begin(), cdrn.end());
+    path::append(curDirRootName, p);
+    // Set path to the result.
+    path.swap(curDirRootName);
+    return error_code::success();
+  }
+
+  if (rootName && !rootDirectory) {
+    StringRef pRootName      = path::root_name(p);
+    StringRef bRootDirectory = path::root_directory(current_dir);
+    StringRef bRelativePath  = path::relative_path(current_dir);
+    StringRef pRelativePath  = path::relative_path(p);
+
+    SmallString<128> res;
+    path::append(res, pRootName, bRootDirectory, bRelativePath, pRelativePath);
+    path.swap(res);
+    return error_code::success();
+  }
+
+  llvm_unreachable("All rootName and rootDirectory combinations should have "
+                   "occurred above!");
+}
+
+error_code create_directories(const Twine &path, bool &existed) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  StringRef parent = path::parent_path(p);
+  if (!parent.empty()) {
+    bool parent_exists;
+    if (error_code ec = fs::exists(parent, parent_exists)) return ec;
+
+    if (!parent_exists)
+      if (error_code ec = create_directories(parent, existed)) return ec;
+  }
+
+  return create_directory(p, existed);
+}
+
+bool exists(file_status status) {
+  return status_known(status) && status.type() != file_type::file_not_found;
+}
+
+bool status_known(file_status s) {
+  return s.type() != file_type::status_error;
+}
+
+bool is_directory(file_status status) {
+  return status.type() == file_type::directory_file;
+}
+
+error_code is_directory(const Twine &path, bool &result) {
+  file_status st;
+  if (error_code ec = status(path, st))
+    return ec;
+  result = is_directory(st);
+  return error_code::success();
+}
+
+bool is_regular_file(file_status status) {
+  return status.type() == file_type::regular_file;
+}
+
+error_code is_regular_file(const Twine &path, bool &result) {
+  file_status st;
+  if (error_code ec = status(path, st))
+    return ec;
+  result = is_regular_file(st);
+  return error_code::success();
+}
+
+bool is_symlink(file_status status) {
+  return status.type() == file_type::symlink_file;
+}
+
+error_code is_symlink(const Twine &path, bool &result) {
+  file_status st;
+  if (error_code ec = status(path, st))
+    return ec;
+  result = is_symlink(st);
+  return error_code::success();
+}
+
+bool is_other(file_status status) {
+  return exists(status) &&
+         !is_regular_file(status) &&
+         !is_directory(status) &&
+         !is_symlink(status);
+}
+
+void directory_entry::replace_filename(const Twine &filename, file_status st) {
+  SmallString<128> path(Path.begin(), Path.end());
+  path::remove_filename(path);
+  path::append(path, filename);
+  Path = path.str();
+  Status = st;
+}
+
+error_code has_magic(const Twine &path, const Twine &magic, bool &result) {
+  SmallString<32>  MagicStorage;
+  StringRef Magic = magic.toStringRef(MagicStorage);
+  SmallString<32> Buffer;
+
+  if (error_code ec = get_magic(path, Magic.size(), Buffer)) {
+    if (ec == errc::value_too_large) {
+      // Magic.size() > file_size(Path).
+      result = false;
+      return error_code::success();
+    }
+    return ec;
+  }
+
+  result = Magic == Buffer;
+  return error_code::success();
+}
+
+/// @brief Identify the magic in magic.
+  file_magic identify_magic(StringRef Magic) {
+  if (Magic.size() < 4)
+    return file_magic::unknown;
+  switch ((unsigned char)Magic[0]) {
+    case 0xDE:  // 0x0B17C0DE = BC wraper
+      if (Magic[1] == (char)0xC0 && Magic[2] == (char)0x17 &&
+          Magic[3] == (char)0x0B)
+        return file_magic::bitcode;
+      break;
+    case 'B':
+      if (Magic[1] == 'C' && Magic[2] == (char)0xC0 && Magic[3] == (char)0xDE)
+        return file_magic::bitcode;
+      break;
+    case '!':
+      if (Magic.size() >= 8)
+        if (memcmp(Magic.data(),"!<arch>\n",8) == 0)
+          return file_magic::archive;
+      break;
+
+    case '\177':
+      if (Magic.size() >= 18 && Magic[1] == 'E' && Magic[2] == 'L' &&
+          Magic[3] == 'F') {
+        bool Data2MSB = Magic[5] == 2;
+        unsigned high = Data2MSB ? 16 : 17;
+        unsigned low  = Data2MSB ? 17 : 16;
+        if (Magic[high] == 0)
+          switch (Magic[low]) {
+            default: break;
+            case 1: return file_magic::elf_relocatable;
+            case 2: return file_magic::elf_executable;
+            case 3: return file_magic::elf_shared_object;
+            case 4: return file_magic::elf_core;
+          }
+      }
+      break;
+
+    case 0xCA:
+      if (Magic[1] == char(0xFE) && Magic[2] == char(0xBA) &&
+          Magic[3] == char(0xBE)) {
+        // This is complicated by an overlap with Java class files.
+        // See the Mach-O section in /usr/share/file/magic for details.
+        if (Magic.size() >= 8 && Magic[7] < 43)
+          return file_magic::macho_universal_binary;
+      }
+      break;
+
+      // The two magic numbers for mach-o are:
+      // 0xfeedface - 32-bit mach-o
+      // 0xfeedfacf - 64-bit mach-o
+    case 0xFE:
+    case 0xCE:
+    case 0xCF: {
+      uint16_t type = 0;
+      if (Magic[0] == char(0xFE) && Magic[1] == char(0xED) &&
+          Magic[2] == char(0xFA) &&
+          (Magic[3] == char(0xCE) || Magic[3] == char(0xCF))) {
+        /* Native endian */
+        if (Magic.size() >= 16) type = Magic[14] << 8 | Magic[15];
+      } else if ((Magic[0] == char(0xCE) || Magic[0] == char(0xCF)) &&
+                 Magic[1] == char(0xFA) && Magic[2] == char(0xED) &&
+                 Magic[3] == char(0xFE)) {
+        /* Reverse endian */
+        if (Magic.size() >= 14) type = Magic[13] << 8 | Magic[12];
+      }
+      switch (type) {
+        default: break;
+        case 1: return file_magic::macho_object;
+        case 2: return file_magic::macho_executable;
+        case 3: return file_magic::macho_fixed_virtual_memory_shared_lib;
+        case 4: return file_magic::macho_core;
+        case 5: return file_magic::macho_preload_executable;
+        case 6: return file_magic::macho_dynamically_linked_shared_lib;
+        case 7: return file_magic::macho_dynamic_linker;
+        case 8: return file_magic::macho_bundle;
+        case 9: return file_magic::macho_dynamic_linker;
+        case 10: return file_magic::macho_dsym_companion;
+      }
+      break;
+    }
+    case 0xF0: // PowerPC Windows
+    case 0x83: // Alpha 32-bit
+    case 0x84: // Alpha 64-bit
+    case 0x66: // MPS R4000 Windows
+    case 0x50: // mc68K
+    case 0x4c: // 80386 Windows
+      if (Magic[1] == 0x01)
+        return file_magic::coff_object;
+
+    case 0x90: // PA-RISC Windows
+    case 0x68: // mc68K Windows
+      if (Magic[1] == 0x02)
+        return file_magic::coff_object;
+      break;
+
+    case 0x4d: // Possible MS-DOS stub on Windows PE file
+      if (Magic[1] == 0x5a) {
+        uint32_t off =
+          *reinterpret_cast<const support::ulittle32_t*>(Magic.data() + 0x3c);
+        // PE/COFF file, either EXE or DLL.
+        if (off < Magic.size() && memcmp(Magic.data() + off, "PE\0\0",4) == 0)
+          return file_magic::pecoff_executable;
+      }
+      break;
+
+    case 0x64: // x86-64 Windows.
+      if (Magic[1] == char(0x86))
+        return file_magic::coff_object;
+      break;
+
+    default:
+      break;
+  }
+  return file_magic::unknown;
+}
+
+error_code identify_magic(const Twine &path, file_magic &result) {
+  SmallString<32> Magic;
+  error_code ec = get_magic(path, Magic.capacity(), Magic);
+  if (ec && ec != errc::value_too_large)
+    return ec;
+
+  result = identify_magic(Magic);
+  return error_code::success();
+}
+
+namespace {
+error_code remove_all_r(StringRef path, file_type ft, uint32_t &count) {
+  if (ft == file_type::directory_file) {
+    // This code would be a lot better with exceptions ;/.
+    error_code ec;
+    directory_iterator i(path, ec);
+    if (ec) return ec;
+    for (directory_iterator e; i != e; i.increment(ec)) {
+      if (ec) return ec;
+      file_status st;
+      if (error_code ec = i->status(st)) return ec;
+      if (error_code ec = remove_all_r(i->path(), st.type(), count)) return ec;
+    }
+    bool obviously_this_exists;
+    if (error_code ec = remove(path, obviously_this_exists)) return ec;
+    assert(obviously_this_exists);
+    ++count; // Include the directory itself in the items removed.
+  } else {
+    bool obviously_this_exists;
+    if (error_code ec = remove(path, obviously_this_exists)) return ec;
+    assert(obviously_this_exists);
+    ++count;
+  }
+
+  return error_code::success();
+}
+} // end unnamed namespace
+
+error_code remove_all(const Twine &path, uint32_t &num_removed) {
+  SmallString<128> path_storage;
+  StringRef p = path.toStringRef(path_storage);
+
+  file_status fs;
+  if (error_code ec = status(path, fs))
+    return ec;
+  num_removed = 0;
+  return remove_all_r(p, fs.type(), num_removed);
+}
+
+error_code directory_entry::status(file_status &result) const {
+  return fs::status(Path, result);
+}
+
+} // end namespace fs
+} // end namespace sys
+} // end namespace llvm
+
+// Include the truly platform-specific parts.
+#if defined(LLVM_ON_UNIX)
+#include "Unix/Path.inc"
+#endif
+#if defined(LLVM_ON_WIN32)
+#include "Windows/Path.inc"
+#endif