Codename One's ParparVM matches HotSpot performance after deep optimizations

Codename One optimized its ParparVM AOT compiler to achieve geometric mean performance parity with Java 25's HotSpot across ten benchmarks, with six benchmarks at or below HotSpot. The improvements include a new page-based heap, code generation enhancements, and manual C tuning. The VM now matches HotSpot's speed while maintaining bit-identical output.