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

Wed Sep 29 11:38:07 EDT 2021

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

> IMO, we should note in What's New that only for Windows, 3.10.0 has a slight slowdown.

I disagree. This is a regression/bug and we don't advertise "known bugs" in the what's new, the same for any other bugfix that has been delayed until 3.10.1

>  Some use cases are slower (by >10%!)

Can you still reproduce this with PR 28475?

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<https://bugs.python.org/issue45116>
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