[issue31336] Speed up _PyType_Lookup() for class creation

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

On my computer the speed up is 13% without LTO and PGO and around 20% with LTO and PGO. Building with LTO and PGO adds other 20%.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31336>
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