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Created on 2022-02-10 00:35 by brandtbucher, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
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| URL | Status | Linked | Edit |
| PR 31240 | merged | brandtbucher, 2022-02-10 00:41 | |
| Messages (4) | |||
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| msg412960 - (view) | Author: Brandt Bucher (brandtbucher) *  |
Date: 2022-02-10 00:35 | |
UNPACK_SEQUENCE already has fast paths for tuples and lists, which make up (literally) 99% of unpackings in the benchmark suite. What's more, two-element tuples make up about two-thirds of all unpackings (though I actually suspect it's even higher, since the unpack_sequence benchmark is definitely skewing the results towards 10-element lists and tuples). These specializations are trivial to implement and result in a solid 1% improvement overall. |
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| msg412962 - (view) | Author: Brandt Bucher (brandtbucher) * |
Date: 2022-02-10 01:00 | |
(I also plan on looking into an adaptive super-duper-instruction for UNPACK_SEQUENCE_TWO_TUPLE__STORE_FAST__STORE_FAST after the current PR has landed). |
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| msg413340 - (view) | Author: Brandt Bucher (brandtbucher) * |
Date: 2022-02-16 16:48 | |
New changeset a9da085015db8cbb81f660158864ac94fe6c67a2 by Brandt Bucher in branch 'main': bpo-46702: Specialize UNPACK_SEQUENCE (GH-31240) https://github.com/python/cpython/commit/a9da085015db8cbb81f660158864ac94fe6c67a2 |
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| msg413512 - (view) | Author: Brandt Bucher (brandtbucher) * |
Date: 2022-02-18 21:19 | |
Closing as UNPACK_SEQUENCE_TWO_TUPLE__STORE_FAST__STORE_FAST results in lots of hits, but no performance improvement. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:56 | admin | set | github: 90858 |
| 2022-02-18 21:19:36 | brandtbucher | set | status: open -> closed resolution: fixed messages: + msg413512 stage: patch review -> resolved |
| 2022-02-16 16:48:20 | brandtbucher | set | messages: + msg413340 |
| 2022-02-10 01:00:03 | brandtbucher | set | messages: + msg412962 |
| 2022-02-10 00:41:16 | brandtbucher | set | keywords:
+ patch pull_requests: + pull_request29410 |
| 2022-02-10 00:35:53 | brandtbucher | create | |