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Restore (or beat) Python 2 performance for arithmetic operations on ints that fit into a single word #101291

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markshannon opened this issue Jan 24, 2023 · 0 comments
Open

Restore (or beat) Python 2 performance for arithmetic operations on ints that fit into a single word #101291

markshannon opened this issue Jan 24, 2023 · 0 comments
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performance Performance or resource usage

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@markshannon
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markshannon commented Jan 24, 2023 •
edited by bedevere-bot

In Python 2 ints and longs were different objects, and the design of each was tailored to the different size and use cases.
In Python3 we dropped the distinction, but we also dropped the design for ints that fit into a single word.
We have added various fast paths for "medium" integers (e.g. #89109) but the underlying data structure gets in the way.

We should layout the int/long object so that it supports fast operations for most integers.

See faster-cpython/ideas#548 for a fuller discussion

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@markshannon markshannon added the performance Performance or resource usage label Jan 24, 2023
@bedevere-bot bedevere-bot mentioned this issue Jan 24, 2023
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markshannon added a commit that referenced this issue Jan 30, 2023
@markshannon
GH-101291: Refactor the PyLongObject struct into object header and …
c1b1f51 
…PyLongValue struct. (GH-101292)
mdboom pushed a commit to mdboom/cpython that referenced this issue Jan 31, 2023
@markshannon @mdboom
pythonGH-101291: Refactor the PyLongObject struct into object heade…
4874c33 
…r and PyLongValue struct. (pythonGH-101292)
@bedevere-bot bedevere-bot mentioned this issue Feb 8, 2023
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@markshannon markshannon mentioned this issue Feb 13, 2023
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