[mypyc] feat: PyObject_CallObject op for fn(*args) fastpath #19631
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BobTheBuidler
commented
Aug 11, 2025
| star_result = self.primitive_op(list_tuple_op, [star_result], line) | ||
| if has_star2 and star2_result is None: | ||
| if has_star2 and star2_result is None and len(star2_keys) > 0: |
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I think we might be able to get rid of has_star2 entirely with this PR
BobTheBuidler
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This PR adds a new custom_op for PyObject_CallObject which is more efficient than PyObject_Call in cases where there are no kwargs. posarg-only use cases are already optimized but this is helpful for patterns such as
fn(*args)orfn(a1, a2, *args)This PR extends #19623 and #19629 , as this change will not be helpful until those PRs are merged.
I will rebase this PR on top as we go to keep everything as easy to review as possible.