[3.11] GH-93516: Backport GH-93769: Store offset of first traceable instruction in code object by markshannon · Pull Request #93818 · python/cpython
The ABI check fails, due to adding the _co_firsttraceable field.
I've added it near the end, so that code that accesses fields other that co_extra and co_code_adaptive will not be effected.
I tried this compared to 3.11.0b3, and this code is slightly slower?
| cov | proj | python3.11 | gh93818 | 93818 vs 3.11 |
|---|---|---|---|---|
| 6.4.1 | bug1339.py | 0.846 s | 0.856 s | 101.20% |
| 6.4.1 | bm_sudoku.py | 55.436 s | 57.561 s | 103.83% |
| 6.4.1 | bm_spectral_norm.py | 66.488 s | 68.803 s | 103.48% |
Odd.
I wouldn't expect this to have much effect compared to removing the overhead of line number lookup, or caching the result of PyCode_GetCode(), but I would expect it to be positive.
Let's remeasure after those are merged.
I'm regenerating the ABI in this PR
@markshannon I cannot push to the remote repo, could you please ensure the "allow pushes from maintainers checkbox is activated on the right column"?
Closing this until I've had time to investigate the slowdown once #94127 is merged.