[issue45116] Performance regression 3.10b1 and later on Windows: Py_DECREF() not inlined in PGO build

[Ken Jin]

Ken Jin <kenjin4096 at gmail.com> added the comment:

> If someone wants this issue to be solved in 3.10.0 it must be resolved ASAP.

neonene suggested that the tracing tests for pattern matching (added in 3.10b4/rc1) caused PGO to wrongly optimize the more uncommon tracing paths in ceval. I will verify their one-line fix to disable that test for PGO and report back within the next 48 hours.

Related issue: https://bugs.python.org/issue44600

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