⚡ Bolt: eliminate redundant stack allocations in VM instruction tracing - #61
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Added a `data_slice` method to `ValueStack` to provide zero-copy slice access. Updated the instruction tracer in `executor.rs` to use this slice instead of cloning the entire stack via `get_dump()` on every instruction execution. Co-authored-by: Tcode-Motion <188012755+Tcode-Motion@users.noreply.github.com>
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💡 What: Replaced a
Vec<RuntimeValue>clone (get_dump()) with a zero-copy slice reference (data_slice()) in the VM's instruction tracing logic.🎯 Why: Calling
self.stack.get_dump()cloned the entire execution stack on every single instruction when debugging or tracing was enabled, causing massive O(N) heap allocation overhead inside the hottest fetch-decode-execute loop of the interpreter.📊 Impact: Eliminates a major memory allocation bottleneck during VM tracing, significantly reducing memory churn and overhead on the hot execution path when the debugger is enabled.
🔬 Measurement: Verify by running the VM test suite with debugging enabled. Profiling tools should show a complete removal of
Vec::cloneinsidetrace_instruction.PR created automatically by Jules for task 12927681461920627077 started by @Tcode-Motion