)]}'
{
  "commit": "ac2b8fc093d50e027914d3bc2cde963172a62895",
  "tree": "69b3c3dfc77c5b6202591831e7a3d899b8612efc",
  "parents": [
    "15929d1085b0e4395e8c1951a7da125f00009d91"
  ],
  "author": {
    "name": "Cherry Mui",
    "email": "cherryyz@google.com",
    "time": "Thu Jun 18 10:33:01 2026 -0400"
  },
  "committer": {
    "name": "Cherry Mui",
    "email": "cherryyz@google.com",
    "time": "Thu Jun 18 08:05:58 2026 -0700"
  },
  "message": "cmd/compile: update default PGO profile\n\nSince last time the default.pgo profile is collected, there has\nbeen a lot of development in the compiler. It\u0027s time to refresh\nthe compiler\u0027s PGO profile.\n\nProfile collected by running the cmd/compile/profile.sh script on\nthe gotip-linux-amd64_c2s16-perf_vs_release gomote.\n\nThere is a slight improvement on benchmark results. On Linux/AMD64,\n\n         │  nopgo.txt  │              old.txt               │              new.txt               │\n         │   sec/op    │   sec/op     vs base               │   sec/op     vs base               │\nTemplate   142.5m ± 1%   140.8m ± 1%  -1.23% (p\u003d0.017 n\u003d20)   141.3m ± 1%  -0.87% (p\u003d0.011 n\u003d20)\nUnicode    122.7m ± 1%   116.6m ± 1%  -4.95% (p\u003d0.000 n\u003d20)   114.9m ± 1%  -6.28% (p\u003d0.000 n\u003d20)\nGoTypes    889.1m ± 0%   872.3m ± 1%  -1.89% (p\u003d0.000 n\u003d20)   864.9m ± 1%  -2.73% (p\u003d0.000 n\u003d20)\nCompiler   161.0m ± 1%   151.9m ± 1%  -5.65% (p\u003d0.000 n\u003d20)   151.5m ± 1%  -5.90% (p\u003d0.000 n\u003d20)\nSSA         8.626 ± 0%    8.337 ± 0%  -3.34% (p\u003d0.000 n\u003d20)    8.294 ± 0%  -3.85% (p\u003d0.000 n\u003d20)\nFlate      148.1m ± 2%   145.3m ± 1%  -1.91% (p\u003d0.005 n\u003d20)   145.8m ± 2%  -1.56% (p\u003d0.026 n\u003d20)\nGoParser   160.7m ± 2%   160.0m ± 1%       ~ (p\u003d0.174 n\u003d20)   158.7m ± 1%  -1.23% (p\u003d0.001 n\u003d20)\nReflect    389.9m ± 1%   383.9m ± 1%  -1.55% (p\u003d0.000 n\u003d20)   382.2m ± 1%  -1.97% (p\u003d0.000 n\u003d20)\nTar        159.6m ± 1%   157.2m ± 1%  -1.48% (p\u003d0.000 n\u003d20)   157.7m ± 1%  -1.18% (p\u003d0.015 n\u003d20)\nXML        186.2m ± 2%   183.4m ± 2%       ~ (p\u003d0.056 n\u003d20)   182.4m ± 1%  -2.03% (p\u003d0.001 n\u003d20)\ngeomean    300.2m        293.0m       -2.41%                  291.9m       -2.78%\n\nFor #60234.\n\nChange-Id: I4101115f9c8005c3180db7a1600c0bc81bef7d5c\nReviewed-on: https://go-review.googlesource.com/c/go/+/792120\nLUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com \u003cgolang-scoped@luci-project-accounts.iam.gserviceaccount.com\u003e\nReviewed-by: David Chase \u003cdrchase@google.com\u003e\nSLSA-Policy-Verified: SLSA Policy Verification Service \u003cdevtools-gerritcodereview-exitgate@google.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "2c2588704f3f6ee52e2f9e9e0d3a3efcc441374a",
      "old_mode": 33188,
      "old_path": "src/cmd/compile/default.pgo",
      "new_id": "06e63b47811f70e63f4e2e941c83b4462960b6ae",
      "new_mode": 33188,
      "new_path": "src/cmd/compile/default.pgo"
    }
  ]
}