intel/llvm

mirror of https://github.com/intel/llvm.git synced 2026-02-05 04:46:27 +08:00

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Erik Desjardins 37eb9d13f8 Revert "[Support] change StringMap hash function from djbHash to xxHash"

This reverts commit d768b97424.

Causes sanitizer failure: https://lab.llvm.org/buildbot/#/builders/238/builds/1114

```
/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/xxhash.cpp:107:12: runtime error: applying non-zero offset 8 to null pointer
    #0 0xaaaab28ec6c8 in llvm::xxHash64(llvm::StringRef) /b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/xxhash.cpp:107:12
    #1 0xaaaab28cbd38 in llvm::StringMapImpl::LookupBucketFor(llvm::StringRef) /b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/StringMap.cpp:87:28
```

Probably causes test failure in `warn-unsafe-buffer-usage-fixits-local-var-span.cpp`: https://lab.llvm.org/buildbot/#/builders/60/builds/10619

Probably causes reverse-iteration test failure in `test-output-format.ll`: https://lab.llvm.org/buildbot/#/builders/54/builds/3545

2023-02-08 10:41:51 -05:00