lyng/notes/fast_ops_optimizations_plan.md

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# Fast Ops Optimizations Plan (Draft)
Baseline
- See `notes/nested_range_baseline.md`
Candidates (not started)
1) Primitive comparisons (done)
- Emit fast CMP variants for known ObjString/ObjInt/ObjReal using temp/stable slots.
- MixedCompareBenchmarkTest: 374 ms -> 347 ms.
2) Mixed numeric ops (done)
- Allow INT+REAL arithmetic to use primitive REAL ops (no obj fallback).
- MixedCompareBenchmarkTest: 347 ms -> 275 ms.
3) Boolean conversion (done; do not revert without review)
- Skip redundant OBJ_TO_BOOL in logical AND/OR when compiler already emits BOOL.
- MixedCompareBenchmarkTest: 275 ms -> 249 ms.
4) Range/loop hot path (done)
- Reuse a cached ObjVoid slot for if-statements in statement context (avoids per-iteration CONST_OBJ).
- MixedCompareBenchmarkTest: 249 ms -> 247 ms.
5) String ops
- Extend fast path for string comparisons in hot loops.
6) Box/unbox audit
- Identify remaining BOX_OBJ / OBJ_TO_* in inner loops and eliminate when safe.