hakorune/docs/private/research/paper-02-box-theory-jit/03-figures-notes.md

Figures & Repro Notes (WIP)

DOT (CFG/PHI with b1 labels)

• Enable JIT + PHI-min: NYASH_JIT_EXEC=1 NYASH_JIT_THRESHOLD=1 NYASH_JIT_PHI_MIN=1
• Write DOT: NYASH_JIT_DOT=out.dot ./target/release/nyash --backend vm examples/jit_phi_demo.nyash
• Expected labels:
  • Branch edges: then cond:b1, else cond:b1
  • Node label: phi:N (b1:M) when boolean PHIs exist
• Render with Graphviz: dot -Tpng out.dot -o out.png

Bench Table (early)

• Command: ./target/release/nyash --benchmark --iterations 50 --jit-stats
• Cases:
  • simple_add (note: early stub impact)
  • arith_loop_100k (JIT ≈ 1.40× VM)
  • branch_return (≈ VM)
  • f64_add (JIT ≈ 1.06× VM)

Capability Probe

• Current toolchain: supports_b1_sig=false (B1 in signatures disabled)
• Future: flip to true after Cranelift upgrade/verification, then switch:
  • ParamKind::B1 → types::B1 (one-line change in builder)