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Skip unused statement location setup - #1322
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charliermarsh merged 1 commit intoOct 17, 2026
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October 17, 2026 23:36
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We skip statement-level source-location lookup for single-name assignments and function and class definitions. These paths set expression, target, or definition locations before emitting instructions; outer location restoration and pending-comprehension handling remain unchanged.
Matched Python 3.15 O2 profiles use about 0.05% fewer instructions for Mypy and 0.08% fewer for SymPy. The 177-case instruction geometric mean improves by 0.06%, with individual changes from -0.48% to +0.26%. All measured project outputs are byte-identical.