Allow recording uops after specializing uops

Currently, this is illegal in bytecodes.c:

macro(TO_BOOL) = 
    _SPECIALIZE_TO_BOOL +
    _RECORD_TOS_TYPE +
    unused/2 +
   _TO_BOOL;

because both specializing and recording uops must be first. Since specializing uops are only present in tier 1, and recording uops are only present in tier 2, there should be no conflict.

We should fix Tools/cases_generator/analyzer.py to allow a recording uop to follow a specializing uop.

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@markshannon

Hi @markshannon I'd like to take this on.

I see that the validation logic in Tools/cases_generator/analyzer.py currently rejects a recording uop following a specializing uop Since specializing is restricted to Tier 1 and recording to Tier 2, there shouldn't be a conflict. I can update the analyzer's parsing/validation rules to permit this sequence

Could you assign this to me? I'll spin up a PR with the fix shortly

We do not assign issues to non-core devs, if you have a fix feel free to propose a PR.

Thanks for the heads-up! I've started working on the analyzer.py fix locally and will open a PR with the proposed changes shortly.

pythongh-148285: Allow recording uops after specializing uops in case…

pythongh-148285: Allow recording uops after specializing uops

I'm on it.

pythongh-148285: Allow recording uops after specializing uops

gh-148285: Allow recording uops after specializing uops (GH-148482)

Done.

pythongh-148285: Allow recording uops after specializing uops (python…

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Allow recording uops after specializing uops #148285

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Allow recording uops after specializing uops #148285

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adityakrmishra commented on Apr 11, 2026

kumaraditya303 commented on Apr 11, 2026

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