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gh-91404: Improve re performance #91495

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Merged
brandtbucher merged 10 commits into from
Apr 15, 2022
Merged

gh-91404: Improve re performance #91495

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89e4e5e
Try out computed gotos in the regex engine
brandtbucher Apr 12, 2022
bc378d8
Reduce indirection
brandtbucher Apr 12, 2022
fa98784
More of that
brandtbucher Apr 12, 2022
48a7f1c
Rearrange some stuff
brandtbucher Apr 12, 2022
6f8a9a0
Whitespace
brandtbucher Apr 12, 2022
03d3194
Generate sre_targets.h
brandtbucher Apr 12, 2022
24fa5a1
Catch up with main
brandtbucher Apr 13, 2022
0d30328
blurb add
brandtbucher Apr 13, 2022
fdcde9f
fixup
brandtbucher Apr 13, 2022
d38743f
What's New
brandtbucher Apr 14, 2022
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@brandtbucher
brandtbucher committed Apr 14, 2022
commit d38743f79bb0cdcc04fc12fe1c8b38a59f124119
6 changes: 6 additions & 0 deletions Doc/whatsnew/3.11.rst
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Expand Up @@ -512,6 +512,12 @@ Optimizations
becomes 272 bytes from 352 bytes on 64bit platform.
(Contributed by Inada Naoki in :issue:`46845`.)

* :mod:`re`'s regular expression matching engine has been partially refactored,
and now uses computed gotos (or "threaded code") on supported platforms. As a
result, Python 3.11 executes the `pyperformance regular expression benchmarks
<https://pyperformance.readthedocs.io/benchmarks.html#regex-dna>`_ up to 10%
faster than Python 3.10.


Faster CPython
==============
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