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diff --git a/contrib/llvm/include/llvm/Object/Decompressor.h b/contrib/llvm/include/llvm/Object/Decompressor.h
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+++ b/contrib/llvm/include/llvm/Object/Decompressor.h
@@ -0,0 +1,64 @@
+//===-- Decompressor.h ------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===/
+
+#ifndef LLVM_OBJECT_DECOMPRESSOR_H
+#define LLVM_OBJECT_DECOMPRESSOR_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Object/ObjectFile.h"
+
+namespace llvm {
+namespace object {
+
+/// @brief Decompressor helps to handle decompression of compressed sections.
+class Decompressor {
+public:
+  /// @brief Create decompressor object.
+  /// @param Name        Section name.
+  /// @param Data        Section content.
+  /// @param IsLE        Flag determines if Data is in little endian form.
+  /// @param Is64Bit     Flag determines if object is 64 bit.
+  static Expected<Decompressor> create(StringRef Name, StringRef Data,
+                                       bool IsLE, bool Is64Bit);
+
+  /// @brief Resize the buffer and uncompress section data into it.
+  /// @param Out         Destination buffer.
+  Error decompress(SmallString<32> &Out);
+
+  /// @brief Uncompress section data to raw buffer provided.
+  /// @param Buffer      Destination buffer.
+  Error decompress(MutableArrayRef<char> Buffer);
+
+  /// @brief Return memory buffer size required for decompression.
+  uint64_t getDecompressedSize() { return DecompressedSize; }
+
+  /// @brief Return true if section is compressed, including gnu-styled case.
+  static bool isCompressed(const object::SectionRef &Section);
+
+  /// @brief Return true if section is a ELF compressed one.
+  static bool isCompressedELFSection(uint64_t Flags, StringRef Name);
+
+  /// @brief Return true if section name matches gnu style compressed one.
+  static bool isGnuStyle(StringRef Name);
+
+private:
+  Decompressor(StringRef Data);
+
+  Error consumeCompressedGnuHeader();
+  Error consumeCompressedZLibHeader(bool Is64Bit, bool IsLittleEndian);
+
+  StringRef SectionData;
+  uint64_t DecompressedSize;
+};
+
+} // end namespace object
+} // end namespace llvm
+
+#endif // LLVM_OBJECT_DECOMPRESSOR_H