)]}'
{
  "commit": "2a3334473e83771b84272793b60af9678f64c1d3",
  "tree": "33d50019d20d5a3762f11f164d24cecc062e4e41",
  "parents": [
    "2f21136f4ea05813a4e2cffd4ab6337a5a09cecb"
  ],
  "author": {
    "name": "Protobuf Team Bot",
    "email": "protobuf-github-bot@google.com",
    "time": "Tue Oct 13 15:07:41 2026 -0700"
  },
  "committer": {
    "name": "Copybara-Service",
    "email": "copybara-worker@google.com",
    "time": "Tue Oct 13 15:12:53 2026 -0700"
  },
  "message": "Avoid PLT calls to the library memcpy() for field, map and array element copies\n\nBefore/after (android_arm64, -c opt, fasttable):\n\nupb_Array_Set, before (17 instructions):\n```armasm\n  sub   sp, sp, #0x20\n  stp   x3, x30, [sp, #0x8]\n  ldr   x9, [x0]\n  mov   w8, #0x1\n  str   x2, [sp]\n  ands  x10, x9, #0x3\n  and   x9, x9, #0xfffffffffffffff8\n  cinc  x10, x10, ne\n  lsl   x11, x1, x10\n  lsl   w8, w8, w10\n  mov   x1, sp\n  add   x0, x9, x11\n  mov   x2, x8\n  bl    memcpy@plt\n  ldr   x30, [sp, #0x10]\n  add   sp, sp, #0x20\n  ret\n```\nafter (no call, no stack frame):\n```armasm\n  ldr   x8, [x0]\n  ands  x9, x8, #0x3\n  and   x8, x8, #0xfffffffffffffff8\n  cinc  x9, x9, ne\n  lsl   x10, x1, x9\n  cmp   x9, #0x2\n  add   x8, x8, x10\n  b.gt  1f\n  cbnz  x9, 2f\n  strb  w2, [x8]\n  ret\n1:cmp   x9, #0x3\n  b.ne  3f\n  str   x2, [x8]\n  ret\n2:str   w2, [x8]\n  ret\n3:stp   x2, x3, [x8]\n  ret\n```\nPiperOrigin-RevId: 998917610\n",
  "tree_diff": [
    {
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    },
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}