)]}'
{
  "commit": "325ddcd6b9f2d3cd88355661f621f7ac499ce27f",
  "tree": "a55e2bf0d5925c97010fd9bdb2afb1dc3bdcb9fc",
  "parents": [
    "02a472a0dbb7d21810ef2c56626eba2113e5a049"
  ],
  "author": {
    "name": "Jukka Lehtosalo",
    "email": "jukka.lehtosalo@iki.fi",
    "time": "Sat Jul 12 12:54:52 2025 +0100"
  },
  "committer": {
    "name": "Jukka Lehtosalo",
    "email": "jukka.lehtosalo@iki.fi",
    "time": "Wed Jul 16 14:49:04 2025 +0100"
  },
  "message": "Micro-optimization: Make ArgKind a regular class instead of enum\n\nMypyc doesn\u0027t generate very efficient code for enums, so switch to a\nregular class. We can later revert the change if/when we can improve\nenum support in mypyc.\n\nOperations related to ArgKind were pretty prominent in the op trace\nlog (#19457).\n\nBy itself this improves performance by ~1.7%, based on\n`perf_compare.py`, which is significant:\n```\nmaster                    4.168s (0.0%) | stdev 0.037s\nHEAD                      4.098s (-1.7%) | stdev 0.028s\n```\n\nThis is a part of a set of micro-optimizations that improve self check\nperformance by ~5.5%.\n",
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