[all-commits] [llvm/llvm-project] 60e4d2: [lld-macho, BalancedPartition] Simplify relocation ...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 60e4d24963ebc256dd68f2f9d969ca8e52cd9649
      https://github.com/llvm/llvm-project/commit/60e4d24963ebc256dd68f2f9d969ca8e52cd9649
  Author: Fangrui Song <i at maskray.me>
  Date:   2025-01-16 (Thu, 16 Jan 2025)

  Changed paths:
    M lld/MachO/BPSectionOrderer.h
    M lld/include/lld/Common/BPSectionOrdererBase.h

  Log Message:
  -----------
  [lld-macho,BalancedPartition] Simplify relocation hash and avoid xxHash

xxHash, inferior to xxh3, is discouraged. We try not to use xxhash in
lld.

Switch to read32le for content hash and xxh3/stable_hash_combine for
relocation hash. Remove the intermediate std::string for relocation
hash.

Change the tail hashing scheme to consider individual bytes instead.
This helps group 0102 and 0201 together. The benefit is negligible,
though.

Pull Request: https://github.com/llvm/llvm-project/pull/121729



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