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3.11: Performance regression in ctypes #92356

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performancePerformance or resource usagetopic-ctypestype-bugAn unexpected behavior, bug, or error
@mdboom

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@mdboom

Bug report

There is an approximately 8% performance regression in function call overhead in ctypes in py3.11.0a7 vs. py3.10.4. On my machine, 280 ns/call vs. 235 ns/call.

Gist to reproduce.

Additional context infaster-cpython/ideas#370.

Your environment

Both Python versions built from source with pgo on Fedora Linux 36, x86_64.

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    performancePerformance or resource usagetopic-ctypestype-bugAn unexpected behavior, bug, or error

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