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Merge the GET_ITER and GET_YIELD_FROM_ITER instructions #145667

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Merge the GET_ITER and GET_YIELD_FROM_ITER instructions#145667
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3.15bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)performancePerformance or resource usagetopic-JIT

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@markshannon
markshannon
opened on Mar 9, 2026

Merging GET_ITER and GET_YIELD_FROM_ITER will allow optimizations applied to for loops for common types like lists to also be applied to yield from loops and allow better specialization of SEND improving JIT coverage.

To merge the two instructions, SEND will have to be modified to take an extra NULL input.

This is part of #145047

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  1. markshannon
    added
    performancePerformance or resource usage
    interpreter-core(Objects, Python, Grammar, and Parser dirs)
    topic-JIT
    3.15bugs and security fixes
    on Mar 9, 2026
  2. markshannon
    added a commit that references this issue on Mar 21, 2026

    GH-145667: Merge `GET_ITER` and `GET_YIELD_FROM_ITER` (GH-146120)

    879c85f
  3. CuriousLearner
    added a commit that references this issue on Mar 22, 2026

    Merge remote-tracking branch 'upstream/main' into fix-pythongh-138577

    2691ad9
  4. markshannon
    closed this as completedon Mar 24, 2026
  5. ljfp
    added a commit that references this issue on Apr 25, 2026

    pythonGH-145667: Merge `GET_ITER` and `GET_YIELD_FROM_ITER` (pythonGH…

    8e8a5b1
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