Commits on Jun 18, 2024

1. [Support] Add llvm::xxh3_128bits …

   Add a 128-bit xxhash function, following the existing
   `llvm::xxh3_64bits` and `llvm::xxHash` implementations.
   Previously, 48e93f5 added support for
   `llvm::xxh3_64bits`, which closely follows the upstream implementation
   at https://github.com/Cyan4973/xxHash, with simplifications from Devin
   Hussey's xxhash-clean.
   However, it is desirable to have a larger 128-bit hash key for use cases
   such as filesystem checksums where chance of collision needs to be
   negligible.
   
   So to that end this also ports over `llvm::xxh3_128bits`.
   
   Testing:
   - Add a test based on xsum_sanity_check.c in upstream xxhash.

   

   dukebw committed Jun 18, 2024
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