)]}'
{
  "commit": "742e99ce1ad77af61ffbfeb94dfa85bca974cd70",
  "tree": "42e63b647c395ca6d8683116bc2739c746724640",
  "parents": [
    "f4fdd8d6157bde7a55a8cb1f82917dd5f766679f"
  ],
  "author": {
    "name": "Vitaly Goldshteyn",
    "email": "goldvitaly@google.com",
    "time": "Thu Feb 05 12:18:34 2026 -0800"
  },
  "committer": {
    "name": "Copybara-Service",
    "email": "copybara-worker@google.com",
    "time": "Thu Feb 05 12:19:14 2026 -0800"
  },
  "message": "Specialize long strings hash for ARM to benefit from AES instruction differences.\n\n```\nname                                     CYCLES/op     CYCLES/op   vs base\nBM_HASHING_Combine_contiguous_Fleet_hot  540.0m ±  2%   507.0m ± 2%   -6.11% (p\u003d0.002 n\u003d6)\nBM_HASHING_Combine_contiguous_Fleet_cold  2.124 ± 12%    2.027 ± 3%   -4.54% (p\u003d0.041 n\u003d6)\n```\n\nASM diff\n1. 33-64: -4 cycles https://godbolt.org/z/nEYEKP4M3\n2. 65+: -6 cycles https://godbolt.org/z/xsnjh678c\n3. -104 bytes of binary size: https://godbolt.org/z/j8absY8M8\n\nPiperOrigin-RevId: 866058683\nChange-Id: I7d2f13532ce4fd2bec0382af0ba116967d5aa063\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "74b6d570336039fc740370a4baadc660a965338c",
      "old_mode": 33188,
      "old_path": "absl/hash/internal/hash.cc",
      "new_id": "43cb561b954b9e8cfad07f4bd701030319247c3e",
      "new_mode": 33188,
      "new_path": "absl/hash/internal/hash.cc"
    },
    {
      "type": "modify",
      "old_id": "6476462126356d8677f37d35c8fb446575542fa2",
      "old_mode": 33188,
      "old_path": "absl/hash/internal/low_level_hash_test.cc",
      "new_id": "f1e2d15630e5f5ed6e8be8981c7be25be87cdb84",
      "new_mode": 33188,
      "new_path": "absl/hash/internal/low_level_hash_test.cc"
    }
  ]
}