https://github.com/python/cpython/commit/23abbf1f2b9123c9c486485ea37da6d36b464f88 commit: 23abbf1f2b9123c9c486485ea37da6d36b464f88 branch: main author: Ken Jin <[email protected]> committer: Fidget-Spinner <[email protected]> date: 2025-12-28T12:15:24Z summary:
gh-139922: Link to results in MSVC tail calling in What's New 3.15 (GH-143242) Link to results in MSVC tail calling for whats new in 3.15 files: M Doc/whatsnew/3.15.rst diff --git a/Doc/whatsnew/3.15.rst b/Doc/whatsnew/3.15.rst index 0d35eed38f303d..11f08031ec54f2 100644 --- a/Doc/whatsnew/3.15.rst +++ b/Doc/whatsnew/3.15.rst @@ -854,11 +854,13 @@ Optimizations * Builds using Visual Studio 2026 (MSVC 18) may now use the new :ref:`tail-calling interpreter <whatsnew314-tail-call-interpreter>`. - Results on an early experimental MSVC compiler reported roughly 15% speedup - on the geometric mean of pyperformance on Windows x86-64 over - the switch-case interpreter. We have - observed speedups ranging from 15% for large pure-Python libraries + Results on Visual Studio 18.1.1 report between + `15-20% <https://github.com/faster-cpython/ideas/blob/main/results/5800X-msvc.pgo2-vs-msvc.pgo.tc.svg>`__ + speedup on the geometric mean of pyperformance on Windows x86-64 over + the switch-case interpreter on an AMD Ryzen 7 5800X. We have + observed speedups ranging from 14% for large pure-Python libraries to 40% for long-running small pure-Python scripts on Windows. + This was made possible by a new feature introduced in MSVC 18. (Contributed by Chris Eibl, Ken Jin, and Brandt Bucher in :gh:`143068`. Special thanks to the MSVC team including Hulon Jenkins.) _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
