[llvm] [Support] Add llvm::xxh3_128bits (PR #95863)

[Jeff Niu via llvm-commits]

================
@@ -1,43 +1,46 @@
 /*
-*  xxHash - Fast Hash algorithm
-*  Copyright (C) 2012-2021, 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 homepage: http://www.xxhash.com
-*  - xxHash source repository : https://github.com/Cyan4973/xxHash
-*/
+ *  xxHash - Extremely Fast Hash algorithm
+ *  Copyright (C) 2012-2023, 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:
----------------
Mogball wrote:

autoformat

https://github.com/llvm/llvm-project/pull/95863