- /* 
-    xxHash - Extremely Fast Hash algorithm 
-    Header File 
-    Copyright (C) 2012-2016, Yann Collet. 
-   
-    BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) 
-   
-    Redistribution and use in source and binary forms, with or without 
-    modification, are permitted provided that the following conditions are 
-    met: 
-   
-        * Redistributions of source code must retain the above copyright 
-    notice, this list of conditions and the following disclaimer. 
-        * Redistributions in binary form must reproduce the above 
-    copyright notice, this list of conditions and the following disclaimer 
-    in the documentation and/or other materials provided with the 
-    distribution. 
-   
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
-    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
-    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
-    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
-    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
-    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
-    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
-    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
-    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
-    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
-    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
-   
-    You can contact the author at : 
-    - xxHash source repository : https://github.com/Cyan4973/xxHash 
- */ 
-   
- /* based on revision d2df04efcbef7d7f6886d345861e5dfda4edacc1 Removed 
-  * everything but a simple interface for computing XXh64. */ 
-   
- #ifndef LLVM_SUPPORT_XXHASH_H 
- #define LLVM_SUPPORT_XXHASH_H 
-   
- #include "llvm/ADT/ArrayRef.h" 
- #include "llvm/ADT/StringRef.h" 
-   
- namespace llvm { 
- uint64_t xxHash64(llvm::StringRef Data); 
- uint64_t xxHash64(llvm::ArrayRef<uint8_t> Data); 
- } 
-   
- #endif 
-