[PATCH] D155756: -fsanitize={function,kcfi}: Switch to xxh3_64bits

[Fangrui Song via Phabricator via cfe-commits]

MaskRay created this revision.
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Following recent changes switching from xxh64 to xxh32 for better
hashing performance (e.g., D154813 <https://reviews.llvm.org/D154813>). These particular instances likely
have negligible time, but this change moves us toward removing xxHash64.

The type hash for -fsanitize={function,kcfi} will change. This is
totally fine for =function, I assume that this is fine for =kcfi as well
as we cannot sign for compatibility across different Clang versions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D155756

Files:
  clang/lib/CodeGen/CodeGenFunction.cpp
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/test/CodeGen/kcfi-normalize.c
  clang/test/CodeGen/ubsan-function.cpp
  clang/test/CodeGenCXX/catch-undef-behavior.cpp

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