Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Support/MD5.h b/linux-x64/clang/include/llvm/Support/MD5.h
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+/* -*- C++ -*-
+ * This code is derived from (original license follows):
+ *
+ * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
+ * MD5 Message-Digest Algorithm (RFC 1321).
+ *
+ * Homepage:
+ * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
+ *
+ * Author:
+ * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
+ *
+ * This software was written by Alexander Peslyak in 2001. No copyright is
+ * claimed, and the software is hereby placed in the public domain.
+ * In case this attempt to disclaim copyright and place the software in the
+ * public domain is deemed null and void, then the software is
+ * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
+ * general public under the following terms:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted.
+ *
+ * There's ABSOLUTELY NO WARRANTY, express or implied.
+ *
+ * See md5.c for more information.
+ */
+
+#ifndef LLVM_SUPPORT_MD5_H
+#define LLVM_SUPPORT_MD5_H
+
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Endian.h"
+#include <array>
+#include <cstdint>
+
+namespace llvm {
+
+template <typename T> class ArrayRef;
+
+class MD5 {
+ // Any 32-bit or wider unsigned integer data type will do.
+ typedef uint32_t MD5_u32plus;
+
+ MD5_u32plus a = 0x67452301;
+ MD5_u32plus b = 0xefcdab89;
+ MD5_u32plus c = 0x98badcfe;
+ MD5_u32plus d = 0x10325476;
+ MD5_u32plus hi = 0;
+ MD5_u32plus lo = 0;
+ uint8_t buffer[64];
+ MD5_u32plus block[16];
+
+public:
+ struct MD5Result {
+ std::array<uint8_t, 16> Bytes;
+
+ operator std::array<uint8_t, 16>() const { return Bytes; }
+
+ const uint8_t &operator[](size_t I) const { return Bytes[I]; }
+ uint8_t &operator[](size_t I) { return Bytes[I]; }
+
+ SmallString<32> digest() const;
+
+ uint64_t low() const {
+ // Our MD5 implementation returns the result in little endian, so the low
+ // word is first.
+ using namespace support;
+ return endian::read<uint64_t, little, unaligned>(Bytes.data());
+ }
+
+ uint64_t high() const {
+ using namespace support;
+ return endian::read<uint64_t, little, unaligned>(Bytes.data() + 8);
+ }
+ std::pair<uint64_t, uint64_t> words() const {
+ using namespace support;
+ return std::make_pair(high(), low());
+ }
+ };
+
+ MD5();
+
+ /// \brief Updates the hash for the byte stream provided.
+ void update(ArrayRef<uint8_t> Data);
+
+ /// \brief Updates the hash for the StringRef provided.
+ void update(StringRef Str);
+
+ /// \brief Finishes off the hash and puts the result in result.
+ void final(MD5Result &Result);
+
+ /// \brief Translates the bytes in \p Res to a hex string that is
+ /// deposited into \p Str. The result will be of length 32.
+ static void stringifyResult(MD5Result &Result, SmallString<32> &Str);
+
+ /// \brief Computes the hash for a given bytes.
+ static std::array<uint8_t, 16> hash(ArrayRef<uint8_t> Data);
+
+private:
+ const uint8_t *body(ArrayRef<uint8_t> Data);
+};
+
+inline bool operator==(const MD5::MD5Result &LHS, const MD5::MD5Result &RHS) {
+ return LHS.Bytes == RHS.Bytes;
+}
+
+/// Helper to compute and return lower 64 bits of the given string's MD5 hash.
+inline uint64_t MD5Hash(StringRef Str) {
+ using namespace support;
+
+ MD5 Hash;
+ Hash.update(Str);
+ MD5::MD5Result Result;
+ Hash.final(Result);
+ // Return the least significant word.
+ return Result.low();
+}
+
+} // end namespace llvm
+
+#endif // LLVM_SUPPORT_MD5_H