1 files changed, 0 insertions, 80 deletions
diff --git a/include/clang/Basic/MemoryBufferCache.h b/include/clang/Basic/MemoryBufferCache.h
deleted file mode 100644
index c79c3c40e4eb..000000000000
--- a/include/clang/Basic/MemoryBufferCache.h
+++ /dev/null
@@ -1,80 +0,0 @@
-//===- MemoryBufferCache.h - Cache for loaded memory buffers ----*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_BASIC_MEMORYBUFFERCACHE_H
-#define LLVM_CLANG_BASIC_MEMORYBUFFERCACHE_H
-
-#include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/StringMap.h"
-#include <memory>
-
-namespace llvm {
-class MemoryBuffer;
-} // end namespace llvm
-
-namespace clang {
-
-/// Manage memory buffers across multiple users.
-///
-/// Ensures that multiple users have a consistent view of each buffer.  This is
-/// used by \a CompilerInstance when building PCMs to ensure that each \a
-/// ModuleManager sees the same files.
-///
-/// \a finalizeCurrentBuffers() should be called before creating a new user.
-/// This locks in the current buffers, ensuring that no buffer that has already
-/// been accessed can be purged, preventing use-after-frees.
-class MemoryBufferCache : public llvm::RefCountedBase<MemoryBufferCache> {
-  struct BufferEntry {
-    std::unique_ptr<llvm::MemoryBuffer> Buffer;
-
-    /// Track the timeline of when this was added to the cache.
-    unsigned Index;
-  };
-
-  /// Cache of buffers.
-  llvm::StringMap<BufferEntry> Buffers;
-
-  /// Monotonically increasing index.
-  unsigned NextIndex = 0;
-
-  /// Bumped to prevent "older" buffers from being removed.
-  unsigned FirstRemovableIndex = 0;
-
-public:
-  /// Store the Buffer under the Filename.
-  ///
-  /// \pre There is not already buffer is not already in the cache.
-  /// \return a reference to the buffer as a convenience.
-  llvm::MemoryBuffer &addBuffer(llvm::StringRef Filename,
-                                std::unique_ptr<llvm::MemoryBuffer> Buffer);
-
-  /// Try to remove a buffer from the cache.
-  ///
-  /// \return false on success, iff \c !isBufferFinal().
-  bool tryToRemoveBuffer(llvm::StringRef Filename);
-
-  /// Get a pointer to the buffer if it exists; else nullptr.
-  llvm::MemoryBuffer *lookupBuffer(llvm::StringRef Filename);
-
-  /// Check whether the buffer is final.
-  ///
-  /// \return true iff \a finalizeCurrentBuffers() has been called since the
-  /// buffer was added.  This prevents buffers from being removed.
-  bool isBufferFinal(llvm::StringRef Filename);
-
-  /// Finalize the current buffers in the cache.
-  ///
-  /// Should be called when creating a new user to ensure previous uses aren't
-  /// invalidated.
-  void finalizeCurrentBuffers();
-};
-
-} // end namespace clang
-
-#endif // LLVM_CLANG_BASIC_MEMORYBUFFERCACHE_H