10000 Tier 2 optimizer: constant propagate through attribute loads · Issue #120323 · python/cpython · GitHub
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Tier 2 optimizer: constant propagate through attribute loads #120323

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Fidget-Spinner opened this issue Jun 10, 2024 · 2 comments
Open

Tier 2 optimizer: constant propagate through attribute loads #120323

Fidget-Spinner opened this issue Jun 10, 2024 · 2 comments
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performance Performance or resource usage type-feature A feature request or enhancement

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Fidget-Spinner commented Jun 10, 2024 •
edited by bedevere-app bot
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Feature or enhancement

Proposal:

Now that we have type versions installed in #119258 . We can use the information to constant propagate through attribute loads.

This means something like

dict.fromkeys()

becomes the same as

dict_fromkeys()

Note: this is just a constant load, not an attribute lookup!

Has this already been discussed elsewhere?

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Links to previous discussion of this feature:

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@Fidget-Spinner Fidget-Spinner added the type-feature A feature request or enhancement label Jun 10, 2024
@Fidget-Spinner Fidget-Spinner self-assigned this Jun 10, 2024
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CC @saulshanabrook this is building off your work!

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Fidget-Spinner commented Jun 10, 2024 •
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Nevermind, I forgot we yet to have a specialization for builtin class loads, so we can't do this until we add the tier 1 specialization.

For now, I can add this for tier 2 just for Python classes.

@Fidget-Spinner Fidget-Spinner added the performance Performance or resource usage label Jun 10, 2024
@bedevere-app bedevere-app bot mentioned this issue Jun 11, 2024
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@bedevere-app bedevere-app bot mentioned this issue Jun 25, 2024
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