[New-bugs-announce] [issue37233] Use _PY_FASTCALL_SMALL_STACK for method_vectorcall

[Jeroen Demeyer]

New submission from Jeroen Demeyer <J.Demeyer at UGent.be>:

The PEP 590 implementation for type "method" caused a minor regression: instead of using _PyObject_Call_Prepend(), method_vectorcall manually allocates and fills a newly allocated vector. This does NOT use the  _PY_FASTCALL_SMALL_STACK optimization, but it should.

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components: Interpreter Core
messages: 345234
nosy: jdemeyer
priority: normal
severity: normal
status: open
title: Use _PY_FASTCALL_SMALL_STACK for method_vectorcall
type: performance
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37233>
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