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GH-130415: Optimize constant comparison in JIT builds #131489

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Merged
merged 11 commits into from
Mar 21, 2025
Merged

GH-130415: Optimize constant comparison in JIT builds #131489

merged 11 commits into from
Mar 21, 2025

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savannahostrowski
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@savannahostrowski savannahostrowski commented Mar 20, 2025 •
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@savannahostrowski savannahostrowski changed the title GH-130415: Optimize constant comparison GH-130415: Optimize constant comparison in JIT builds Mar 20, 2025
brandtbucher
brandtbucher requested changes Mar 20, 2025
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Thanks, this new instruction opens a lot of doors for us in the optimizer! A few things I noticed:

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bedevere-app bot commented Mar 20, 2025

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JIT test failure looks unrelated, and due to GH-131488.

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brandtbucher requested changes Mar 20, 2025
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Just a couple more things. Also, can you merge in main? I think JIT CI should be fixed.

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Tail-calling failure is unrelated, and showing up on other PRs too.

@brandtbucher brandtbucher merged commit b92ee14 into python:main Mar 21, 2025
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So next steps would be doing the same thing for the other COMPARE_OP specializations (COMPARE_OP_FLOAT and COMPARE_OP_STR). Also for a bunch of BINARY_OP specializations like _BINARY_OP_ADD_INT, etc. (these are easier, since many of them already evaluate the constant... we just need to check to see if it's immortal).

Is this something you'd be interested in doing?

@brianschubert brianschubert mentioned this pull request Mar 21, 2025
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seehwan pushed a commit to seehwan/cpython that referenced this pull request Apr 16, 2025
@savannahostrowski @seehwan80
pythonGH-130415: Optimize constant comparison in JIT builds (pythonGH…
d3a034c 
…-131489)
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@brandtbucher brandtbucher brandtbucher approved these changes

@Fidget-Spinner Fidget-Spinner Awaiting requested review from Fidget-Spinner Fidget-Spinner is a code owner

@markshannon markshannon Awaiting requested review from markshannon markshannon is a code owner

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@savannahostrowski @brandtbucher