Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 539 deletions

diff --git a/gnu/llvm/tools/clang/lib/Basic/FileManager.cpp b/gnu/llvm/tools/clang/lib/Basic/FileManager.cpp
deleted file mode 100644
index 01ec1d69cde..00000000000
--- a/gnu/llvm/tools/clang/lib/Basic/FileManager.cpp
+++ /dev/null
@@ -1,539 +0,0 @@
-//===--- FileManager.cpp - File System Probing and Caching ----------------===//
-//
-//                     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 FileManager interface.
-//
-//===----------------------------------------------------------------------===//
-//
-// TODO: This should index all interesting directories with dirent calls.
-//  getdirentries ?
-//  opendir/readdir_r/closedir ?
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Basic/FileManager.h"
-#include "clang/Basic/FileSystemStatCache.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/Config/llvm-config.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cassert>
-#include <climits>
-#include <cstdint>
-#include <cstdlib>
-#include <string>
-#include <utility>
-
-using namespace clang;
-
-/// NON_EXISTENT_DIR - A special value distinct from null that is used to
-/// represent a dir name that doesn't exist on the disk.
-#define NON_EXISTENT_DIR reinterpret_cast<DirectoryEntry*>((intptr_t)-1)
-
-/// NON_EXISTENT_FILE - A special value distinct from null that is used to
-/// represent a filename that doesn't exist on the disk.
-#define NON_EXISTENT_FILE reinterpret_cast<FileEntry*>((intptr_t)-1)
-
-//===----------------------------------------------------------------------===//
-// Common logic.
-//===----------------------------------------------------------------------===//
-
-FileManager::FileManager(const FileSystemOptions &FSO,
-                         IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS)
-    : FS(std::move(FS)), FileSystemOpts(FSO), SeenDirEntries(64),
-      SeenFileEntries(64), NextFileUID(0) {
-  NumDirLookups = NumFileLookups = 0;
-  NumDirCacheMisses = NumFileCacheMisses = 0;
-
-  // If the caller doesn't provide a virtual file system, just grab the real
-  // file system.
-  if (!this->FS)
-    this->FS = llvm::vfs::getRealFileSystem();
-}
-
-FileManager::~FileManager() = default;
-
-void FileManager::setStatCache(std::unique_ptr<FileSystemStatCache> statCache) {
-  assert(statCache && "No stat cache provided?");
-  StatCache = std::move(statCache);
-}
-
-void FileManager::clearStatCache() { StatCache.reset(); }
-
-/// Retrieve the directory that the given file name resides in.
-/// Filename can point to either a real file or a virtual file.
-static const DirectoryEntry *getDirectoryFromFile(FileManager &FileMgr,
-                                                  StringRef Filename,
-                                                  bool CacheFailure) {
-  if (Filename.empty())
-    return nullptr;
-
-  if (llvm::sys::path::is_separator(Filename[Filename.size() - 1]))
-    return nullptr; // If Filename is a directory.
-
-  StringRef DirName = llvm::sys::path::parent_path(Filename);
-  // Use the current directory if file has no path component.
-  if (DirName.empty())
-    DirName = ".";
-
-  return FileMgr.getDirectory(DirName, CacheFailure);
-}
-
-/// Add all ancestors of the given path (pointing to either a file or
-/// a directory) as virtual directories.
-void FileManager::addAncestorsAsVirtualDirs(StringRef Path) {
-  StringRef DirName = llvm::sys::path::parent_path(Path);
-  if (DirName.empty())
-    DirName = ".";
-
-  auto &NamedDirEnt =
-      *SeenDirEntries.insert(std::make_pair(DirName, nullptr)).first;
-
-  // When caching a virtual directory, we always cache its ancestors
-  // at the same time.  Therefore, if DirName is already in the cache,
-  // we don't need to recurse as its ancestors must also already be in
-  // the cache.
-  if (NamedDirEnt.second && NamedDirEnt.second != NON_EXISTENT_DIR)
-    return;
-
-  // Add the virtual directory to the cache.
-  auto UDE = llvm::make_unique<DirectoryEntry>();
-  UDE->Name = NamedDirEnt.first();
-  NamedDirEnt.second = UDE.get();
-  VirtualDirectoryEntries.push_back(std::move(UDE));
-
-  // Recursively add the other ancestors.
-  addAncestorsAsVirtualDirs(DirName);
-}
-
-const DirectoryEntry *FileManager::getDirectory(StringRef DirName,
-                                                bool CacheFailure) {
-  // stat doesn't like trailing separators except for root directory.
-  // At least, on Win32 MSVCRT, stat() cannot strip trailing '/'.
-  // (though it can strip '\\')
-  if (DirName.size() > 1 &&
-      DirName != llvm::sys::path::root_path(DirName) &&
-      llvm::sys::path::is_separator(DirName.back()))
-    DirName = DirName.substr(0, DirName.size()-1);
-#ifdef _WIN32
-  // Fixing a problem with "clang C:test.c" on Windows.
-  // Stat("C:") does not recognize "C:" as a valid directory
-  std::string DirNameStr;
-  if (DirName.size() > 1 && DirName.back() == ':' &&
-      DirName.equals_lower(llvm::sys::path::root_name(DirName))) {
-    DirNameStr = DirName.str() + '.';
-    DirName = DirNameStr;
-  }
-#endif
-
-  ++NumDirLookups;
-  auto &NamedDirEnt =
-      *SeenDirEntries.insert(std::make_pair(DirName, nullptr)).first;
-
-  // See if there was already an entry in the map.  Note that the map
-  // contains both virtual and real directories.
-  if (NamedDirEnt.second)
-    return NamedDirEnt.second == NON_EXISTENT_DIR ? nullptr
-                                                  : NamedDirEnt.second;
-
-  ++NumDirCacheMisses;
-
-  // By default, initialize it to invalid.
-  NamedDirEnt.second = NON_EXISTENT_DIR;
-
-  // Get the null-terminated directory name as stored as the key of the
-  // SeenDirEntries map.
-  StringRef InterndDirName = NamedDirEnt.first();
-
-  // Check to see if the directory exists.
-  FileData Data;
-  if (getStatValue(InterndDirName, Data, false, nullptr /*directory lookup*/)) {
-    // There's no real directory at the given path.
-    if (!CacheFailure)
-      SeenDirEntries.erase(DirName);
-    return nullptr;
-  }
-
-  // It exists.  See if we have already opened a directory with the
-  // same inode (this occurs on Unix-like systems when one dir is
-  // symlinked to another, for example) or the same path (on
-  // Windows).
-  DirectoryEntry &UDE = UniqueRealDirs[Data.UniqueID];
-
-  NamedDirEnt.second = &UDE;
-  if (UDE.getName().empty()) {
-    // We don't have this directory yet, add it.  We use the string
-    // key from the SeenDirEntries map as the string.
-    UDE.Name  = InterndDirName;
-  }
-
-  return &UDE;
-}
-
-const FileEntry *FileManager::getFile(StringRef Filename, bool openFile,
-                                      bool CacheFailure) {
-  ++NumFileLookups;
-
-  // See if there is already an entry in the map.
-  auto &NamedFileEnt =
-      *SeenFileEntries.insert(std::make_pair(Filename, nullptr)).first;
-
-  // See if there is already an entry in the map.
-  if (NamedFileEnt.second)
-    return NamedFileEnt.second == NON_EXISTENT_FILE ? nullptr
-                                                    : NamedFileEnt.second;
-
-  ++NumFileCacheMisses;
-
-  // By default, initialize it to invalid.
-  NamedFileEnt.second = NON_EXISTENT_FILE;
-
-  // Get the null-terminated file name as stored as the key of the
-  // SeenFileEntries map.
-  StringRef InterndFileName = NamedFileEnt.first();
-
-  // Look up the directory for the file.  When looking up something like
-  // sys/foo.h we'll discover all of the search directories that have a 'sys'
-  // subdirectory.  This will let us avoid having to waste time on known-to-fail
-  // searches when we go to find sys/bar.h, because all the search directories
-  // without a 'sys' subdir will get a cached failure result.
-  const DirectoryEntry *DirInfo = getDirectoryFromFile(*this, Filename,
-                                                       CacheFailure);
-  if (DirInfo == nullptr) { // Directory doesn't exist, file can't exist.
-    if (!CacheFailure)
-      SeenFileEntries.erase(Filename);
-
-    return nullptr;
-  }
-
-  // FIXME: Use the directory info to prune this, before doing the stat syscall.
-  // FIXME: This will reduce the # syscalls.
-
-  // Nope, there isn't.  Check to see if the file exists.
-  std::unique_ptr<llvm::vfs::File> F;
-  FileData Data;
-  if (getStatValue(InterndFileName, Data, true, openFile ? &F : nullptr)) {
-    // There's no real file at the given path.
-    if (!CacheFailure)
-      SeenFileEntries.erase(Filename);
-
-    return nullptr;
-  }
-
-  assert((openFile || !F) && "undesired open file");
-
-  // It exists.  See if we have already opened a file with the same inode.
-  // This occurs when one dir is symlinked to another, for example.
-  FileEntry &UFE = UniqueRealFiles[Data.UniqueID];
-
-  NamedFileEnt.second = &UFE;
-
-  // If the name returned by getStatValue is different than Filename, re-intern
-  // the name.
-  if (Data.Name != Filename) {
-    auto &NamedFileEnt =
-        *SeenFileEntries.insert(std::make_pair(Data.Name, nullptr)).first;
-    if (!NamedFileEnt.second)
-      NamedFileEnt.second = &UFE;
-    else
-      assert(NamedFileEnt.second == &UFE &&
-             "filename from getStatValue() refers to wrong file");
-    InterndFileName = NamedFileEnt.first().data();
-  }
-
-  if (UFE.isValid()) { // Already have an entry with this inode, return it.
-
-    // FIXME: this hack ensures that if we look up a file by a virtual path in
-    // the VFS that the getDir() will have the virtual path, even if we found
-    // the file by a 'real' path first. This is required in order to find a
-    // module's structure when its headers/module map are mapped in the VFS.
-    // We should remove this as soon as we can properly support a file having
-    // multiple names.
-    if (DirInfo != UFE.Dir && Data.IsVFSMapped)
-      UFE.Dir = DirInfo;
-
-    // Always update the name to use the last name by which a file was accessed.
-    // FIXME: Neither this nor always using the first name is correct; we want
-    // to switch towards a design where we return a FileName object that
-    // encapsulates both the name by which the file was accessed and the
-    // corresponding FileEntry.
-    UFE.Name = InterndFileName;
-
-    return &UFE;
-  }
-
-  // Otherwise, we don't have this file yet, add it.
-  UFE.Name    = InterndFileName;
-  UFE.Size = Data.Size;
-  UFE.ModTime = Data.ModTime;
-  UFE.Dir     = DirInfo;
-  UFE.UID     = NextFileUID++;
-  UFE.UniqueID = Data.UniqueID;
-  UFE.IsNamedPipe = Data.IsNamedPipe;
-  UFE.InPCH = Data.InPCH;
-  UFE.File = std::move(F);
-  UFE.IsValid = true;
-
-  if (UFE.File) {
-    if (auto PathName = UFE.File->getName())
-      fillRealPathName(&UFE, *PathName);
-  }
-  return &UFE;
-}
-
-const FileEntry *
-FileManager::getVirtualFile(StringRef Filename, off_t Size,
-                            time_t ModificationTime) {
-  ++NumFileLookups;
-
-  // See if there is already an entry in the map.
-  auto &NamedFileEnt =
-      *SeenFileEntries.insert(std::make_pair(Filename, nullptr)).first;
-
-  // See if there is already an entry in the map.
-  if (NamedFileEnt.second && NamedFileEnt.second != NON_EXISTENT_FILE)
-    return NamedFileEnt.second;
-
-  ++NumFileCacheMisses;
-
-  // By default, initialize it to invalid.
-  NamedFileEnt.second = NON_EXISTENT_FILE;
-
-  addAncestorsAsVirtualDirs(Filename);
-  FileEntry *UFE = nullptr;
-
-  // Now that all ancestors of Filename are in the cache, the
-  // following call is guaranteed to find the DirectoryEntry from the
-  // cache.
-  const DirectoryEntry *DirInfo = getDirectoryFromFile(*this, Filename,
-                                                       /*CacheFailure=*/true);
-  assert(DirInfo &&
-         "The directory of a virtual file should already be in the cache.");
-
-  // Check to see if the file exists. If so, drop the virtual file
-  FileData Data;
-  const char *InterndFileName = NamedFileEnt.first().data();
-  if (getStatValue(InterndFileName, Data, true, nullptr) == 0) {
-    Data.Size = Size;
-    Data.ModTime = ModificationTime;
-    UFE = &UniqueRealFiles[Data.UniqueID];
-
-    NamedFileEnt.second = UFE;
-
-    // If we had already opened this file, close it now so we don't
-    // leak the descriptor. We're not going to use the file
-    // descriptor anyway, since this is a virtual file.
-    if (UFE->File)
-      UFE->closeFile();
-
-    // If we already have an entry with this inode, return it.
-    if (UFE->isValid())
-      return UFE;
-
-    UFE->UniqueID = Data.UniqueID;
-    UFE->IsNamedPipe = Data.IsNamedPipe;
-    UFE->InPCH = Data.InPCH;
-    fillRealPathName(UFE, Data.Name);
-  }
-
-  if (!UFE) {
-    VirtualFileEntries.push_back(llvm::make_unique<FileEntry>());
-    UFE = VirtualFileEntries.back().get();
-    NamedFileEnt.second = UFE;
-  }
-
-  UFE->Name    = InterndFileName;
-  UFE->Size    = Size;
-  UFE->ModTime = ModificationTime;
-  UFE->Dir     = DirInfo;
-  UFE->UID     = NextFileUID++;
-  UFE->IsValid = true;
-  UFE->File.reset();
-  return UFE;
-}
-
-bool FileManager::FixupRelativePath(SmallVectorImpl<char> &path) const {
-  StringRef pathRef(path.data(), path.size());
-
-  if (FileSystemOpts.WorkingDir.empty()
-      || llvm::sys::path::is_absolute(pathRef))
-    return false;
-
-  SmallString<128> NewPath(FileSystemOpts.WorkingDir);
-  llvm::sys::path::append(NewPath, pathRef);
-  path = NewPath;
-  return true;
-}
-
-bool FileManager::makeAbsolutePath(SmallVectorImpl<char> &Path) const {
-  bool Changed = FixupRelativePath(Path);
-
-  if (!llvm::sys::path::is_absolute(StringRef(Path.data(), Path.size()))) {
-    FS->makeAbsolute(Path);
-    Changed = true;
-  }
-
-  return Changed;
-}
-
-void FileManager::fillRealPathName(FileEntry *UFE, llvm::StringRef FileName) {
-  llvm::SmallString<128> AbsPath(FileName);
-  // This is not the same as `VFS::getRealPath()`, which resolves symlinks
-  // but can be very expensive on real file systems.
-  // FIXME: the semantic of RealPathName is unclear, and the name might be
-  // misleading. We need to clean up the interface here.
-  makeAbsolutePath(AbsPath);
-  llvm::sys::path::remove_dots(AbsPath, /*remove_dot_dot=*/true);
-  UFE->RealPathName = AbsPath.str();
-}
-
-llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
-FileManager::getBufferForFile(const FileEntry *Entry, bool isVolatile,
-                              bool ShouldCloseOpenFile) {
-  uint64_t FileSize = Entry->getSize();
-  // If there's a high enough chance that the file have changed since we
-  // got its size, force a stat before opening it.
-  if (isVolatile)
-    FileSize = -1;
-
-  StringRef Filename = Entry->getName();
-  // If the file is already open, use the open file descriptor.
-  if (Entry->File) {
-    auto Result =
-        Entry->File->getBuffer(Filename, FileSize,
-                               /*RequiresNullTerminator=*/true, isVolatile);
-    // FIXME: we need a set of APIs that can make guarantees about whether a
-    // FileEntry is open or not.
-    if (ShouldCloseOpenFile)
-      Entry->closeFile();
-    return Result;
-  }
-
-  // Otherwise, open the file.
-
-  if (FileSystemOpts.WorkingDir.empty())
-    return FS->getBufferForFile(Filename, FileSize,
-                                /*RequiresNullTerminator=*/true, isVolatile);
-
-  SmallString<128> FilePath(Entry->getName());
-  FixupRelativePath(FilePath);
-  return FS->getBufferForFile(FilePath, FileSize,
-                              /*RequiresNullTerminator=*/true, isVolatile);
-}
-
-llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
-FileManager::getBufferForFile(StringRef Filename, bool isVolatile) {
-  if (FileSystemOpts.WorkingDir.empty())
-    return FS->getBufferForFile(Filename, -1, true, isVolatile);
-
-  SmallString<128> FilePath(Filename);
-  FixupRelativePath(FilePath);
-  return FS->getBufferForFile(FilePath.c_str(), -1, true, isVolatile);
-}
-
-/// getStatValue - Get the 'stat' information for the specified path,
-/// using the cache to accelerate it if possible.  This returns true
-/// if the path points to a virtual file or does not exist, or returns
-/// false if it's an existent real file.  If FileDescriptor is NULL,
-/// do directory look-up instead of file look-up.
-bool FileManager::getStatValue(StringRef Path, FileData &Data, bool isFile,
-                               std::unique_ptr<llvm::vfs::File> *F) {
-  // FIXME: FileSystemOpts shouldn't be passed in here, all paths should be
-  // absolute!
-  if (FileSystemOpts.WorkingDir.empty())
-    return FileSystemStatCache::get(Path, Data, isFile, F,StatCache.get(), *FS);
-
-  SmallString<128> FilePath(Path);
-  FixupRelativePath(FilePath);
-
-  return FileSystemStatCache::get(FilePath.c_str(), Data, isFile, F,
-                                  StatCache.get(), *FS);
-}
-
-bool FileManager::getNoncachedStatValue(StringRef Path,
-                                        llvm::vfs::Status &Result) {
-  SmallString<128> FilePath(Path);
-  FixupRelativePath(FilePath);
-
-  llvm::ErrorOr<llvm::vfs::Status> S = FS->status(FilePath.c_str());
-  if (!S)
-    return true;
-  Result = *S;
-  return false;
-}
-
-void FileManager::invalidateCache(const FileEntry *Entry) {
-  assert(Entry && "Cannot invalidate a NULL FileEntry");
-
-  SeenFileEntries.erase(Entry->getName());
-
-  // FileEntry invalidation should not block future optimizations in the file
-  // caches. Possible alternatives are cache truncation (invalidate last N) or
-  // invalidation of the whole cache.
-  UniqueRealFiles.erase(Entry->getUniqueID());
-}
-
-void FileManager::GetUniqueIDMapping(
-                   SmallVectorImpl<const FileEntry *> &UIDToFiles) const {
-  UIDToFiles.clear();
-  UIDToFiles.resize(NextFileUID);
-
-  // Map file entries
-  for (llvm::StringMap<FileEntry*, llvm::BumpPtrAllocator>::const_iterator
-         FE = SeenFileEntries.begin(), FEEnd = SeenFileEntries.end();
-       FE != FEEnd; ++FE)
-    if (FE->getValue() && FE->getValue() != NON_EXISTENT_FILE)
-      UIDToFiles[FE->getValue()->getUID()] = FE->getValue();
-
-  // Map virtual file entries
-  for (const auto &VFE : VirtualFileEntries)
-    if (VFE && VFE.get() != NON_EXISTENT_FILE)
-      UIDToFiles[VFE->getUID()] = VFE.get();
-}
-
-void FileManager::modifyFileEntry(FileEntry *File,
-                                  off_t Size, time_t ModificationTime) {
-  File->Size = Size;
-  File->ModTime = ModificationTime;
-}
-
-StringRef FileManager::getCanonicalName(const DirectoryEntry *Dir) {
-  // FIXME: use llvm::sys::fs::canonical() when it gets implemented
-  llvm::DenseMap<const DirectoryEntry *, llvm::StringRef>::iterator Known
-    = CanonicalDirNames.find(Dir);
-  if (Known != CanonicalDirNames.end())
-    return Known->second;
-
-  StringRef CanonicalName(Dir->getName());
-
-  SmallString<4096> CanonicalNameBuf;
-  if (!FS->getRealPath(Dir->getName(), CanonicalNameBuf))
-    CanonicalName = StringRef(CanonicalNameBuf).copy(CanonicalNameStorage);
-
-  CanonicalDirNames.insert(std::make_pair(Dir, CanonicalName));
-  return CanonicalName;
-}
-
-void FileManager::PrintStats() const {
-  llvm::errs() << "\n*** File Manager Stats:\n";
-  llvm::errs() << UniqueRealFiles.size() << " real files found, "
-               << UniqueRealDirs.size() << " real dirs found.\n";
-  llvm::errs() << VirtualFileEntries.size() << " virtual files found, "
-               << VirtualDirectoryEntries.size() << " virtual dirs found.\n";
-  llvm::errs() << NumDirLookups << " dir lookups, "
-               << NumDirCacheMisses << " dir cache misses.\n";
-  llvm::errs() << NumFileLookups << " file lookups, "
-               << NumFileCacheMisses << " file cache misses.\n";
-
-  //llvm::errs() << PagesMapped << BytesOfPagesMapped << FSLookups;
-}