✨ Refactor VM tracing into trait-based system#124
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Replace ad-hoc #[cfg(feature = "vm-trace")] blocks with a composable VmTracer trait behind a renamed `trace` feature flag. Add four tracer implementations: PrintTracer, HistogramTracer, TimingTracer, and SpanTracer (source heat map). Tracers are enabled via CLI flags --trace-print, --trace-histogram, --trace-time, and --trace-span. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
vm-tracefeature flag totraceand refactor inline tracing into a composableVmTracertraitPrintTracer(instruction log),HistogramTracer(dispatch counts),TimingTracer(cumulative time per opcode), andSpanTracer(source code heat map)--trace-print,--trace-histogram,--trace-time,--trace-spanTest plan
cargo buildcompiles without trace feature (zero cost)cargo build --features tracecompiles with trace featurecargo clippyandcargo clippy --features traceproduce no warnings🤖 Generated with Claude Code