gh-100239: specialize dict subclasses with no getitem override #132383
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The tests will be great again once we merge the fix for #132284. |
Python/bytecodes.c
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| @@ -971,15 +971,14 @@ dummy_func( | |||
| PyObject *sub = PyStackRef_AsPyObjectBorrow(sub_st); | |||
| PyObject *dict = PyStackRef_AsPyObjectBorrow(dict_st); | |||
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| assert(PyDict_CheckExact(dict)); | |||
| assert(PyDict_Check(dict)); | |||
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I think you also need to change _GUARD_NOS_DICT to PyDict_Check instead of PyDict_CheckExact for this to work but I am not sure.
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It does look like it from the code, but I don't see more misses.
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Perf with the fix to the guard: https://github.com/faster-cpython/benchmarking-public/blob/main/results/bm-20250412-3.14.0a7%2B-3d9cf36/README.md |
markshannon
reviewed
Apr 14, 2025
methane
approved these changes
Apr 15, 2025
markshannon
reviewed
Apr 15, 2025
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Perf stats show the specialisation numbers improve, but perf is overall the same.
https://github.com/faster-cpython/benchmarking-public/blob/main/results/bm-20250410-3.14.0a6%2B-bf2d1dd/README.md