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bpo-42115: Add an opcode cache for LOAD_METHOD #23503

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pablogsal wants to merge 1 commit into from
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bpo-42115: Add an opcode cache for LOAD_METHOD #23503

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@pablogsal pablogsal commented Nov 24, 2020 •
edited by bedevere-bot
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@pablogsal pablogsal force-pushed the load_method branch 3 times, most recently from 8403dfd to e34475d Compare November 24, 2020 22:34
@pablogsal pablogsal self-assigned this Dec 14, 2020
@pablogsal pablogsal changed the title bpo-42115: Add an opcode cache for LOAD_ATTR bpo-42115: Add an opcode cache for LOAD_METHOD Dec 14, 2020
1st1
1st1 reviewed Dec 15, 2020
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Python/ceval.c Outdated
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Let's maybe add a comment clarifying what this knob does?

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1st1 commented Dec 15, 2020

Add a NEWS update?

Also this looks pretty similar to my original patch but I didn't compare. Were there any changes to it, I'm just curious?

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pablogsal commented Dec 15, 2020 •
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Also this looks pretty similar to my original patch but I didn't compare. Were there any changes to it, I'm just curious?

The idea is the same but this part is simplified:

https://github.com/python/cpython/pull/23503/files#diff-c22186367cbe20233e843261998dc027ae5f1f8c0d2e778abfa454ae74cc59deR3866-R3875

I am also using _PyDict_GetItem_KnownHash to fetch the items for slightly better performance and the rest is just modifications to account for the code changes around.

I am waiting for Inada-san to confirm the benchmarks before landing and adding the NEWS item

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pablogsal commented Dec 16, 2020

I am closing this as the benchmarks are not that exiting after rebasing and benchmarking again :(

@pablogsal pablogsal closed this Dec 16, 2020
gvanrossum added a commit to gvanrossum/cpython that referenced this pull request Jan 31, 2021
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Version of pythonGH-23503 for __dict__-less classes
4cfe42e 
Written by Pablo.
@Fidget-Spinner Fidget-Spinner mentioned this pull request Aug 13, 2021
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@1st1 1st1 1st1 approved these changes

@markshannon markshannon Awaiting requested review from markshannon

@methane methane Awaiting requested review from methane

@vstinner vstinner Awaiting requested review from vstinner

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