Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 48 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Support/Compression.h b/clang-r353983/include/llvm/Support/Compression.h
new file mode 100644
index 00000000..5bc0e569
--- /dev/null
+++ b/clang-r353983/include/llvm/Support/Compression.h
@@ -0,0 +1,48 @@
+//===-- llvm/Support/Compression.h ---Compression----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains basic functions for compression/uncompression.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_COMPRESSION_H
+#define LLVM_SUPPORT_COMPRESSION_H
+
+#include "llvm/Support/DataTypes.h"
+
+namespace llvm {
+template <typename T> class SmallVectorImpl;
+class Error;
+class StringRef;
+
+namespace zlib {
+
+static constexpr int NoCompression = 0;
+static constexpr int BestSpeedCompression = 1;
+static constexpr int DefaultCompression = 6;
+static constexpr int BestSizeCompression = 9;
+
+bool isAvailable();
+
+Error compress(StringRef InputBuffer, SmallVectorImpl<char> &CompressedBuffer,
+               int Level = DefaultCompression);
+
+Error uncompress(StringRef InputBuffer, char *UncompressedBuffer,
+                 size_t &UncompressedSize);
+
+Error uncompress(StringRef InputBuffer,
+                 SmallVectorImpl<char> &UncompressedBuffer,
+                 size_t UncompressedSize);
+
+uint32_t crc32(StringRef Buffer);
+
+}  // End of namespace zlib
+
+} // End of namespace llvm
+
+#endif