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Title: Reduce per-instruction overhead in interpreter loop by youknowone · Pull Request #7315 · RustPython/RustPython · GitHub

Open Graph Title: Reduce per-instruction overhead in interpreter loop by youknowone · Pull Request #7315 · RustPython/RustPython

X Title: Reduce per-instruction overhead in interpreter loop by youknowone · Pull Request #7315 · RustPython/RustPython

Description: close #5281 Defer prev_line update to when tracing is active Inline skip_caches_if_fallthrough, compute cache_entries once per instruction Unmark test_pdb_set_trace EXPECTED_FAILURE (now passing due to prev_line fix) Note: Moving check_signals to JumpBackward only was attempted but reverted — it broke signal delivery in non-loop code (test_signal, test_io, test_faulthandler). Summary by CodeRabbit Refactor Optimized virtual machine instruction cache handling and streamlined tracing logic for improved consistency and performance across execution paths.

Open Graph Description: close #5281 Defer prev_line update to when tracing is active Inline skip_caches_if_fallthrough, compute cache_entries once per instruction Unmark test_pdb_set_trace EXPECTED_FAILURE (now passing d...

X Description: close #5281 Defer prev_line update to when tracing is active Inline skip_caches_if_fallthrough, compute cache_entries once per instruction Unmark test_pdb_set_trace EXPECTED_FAILURE (now passing d...

Opengraph URL: https://github.com/RustPython/RustPython/pull/7315

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6788774 Reduce per-instruction overhead in interpreter loop youknowone Mar 2, 2026 https://github.com/RustPython/RustPython/pull/7315/commits/67887742decd0d8d7f415e3eb5ee9580c8e1c203
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