giles c16142d14c CekState record optimization + profiling: 1.5x speedup, root cause found ...

Transpiler (transpiler.sx): detects CEK state dict literals (5 fields:
control/env/kont/phase/value) and emits CekState OCaml record instead
of Dict(Hashtbl). Eliminates 200K Hashtbl allocations per page.

Bootstrapper: skip stdlib.sx (functions already registered as OCaml
primitives). Only transpile evaluator.sx.

Runtime: get_val handles CekState with direct field access. type_of
returns "dict" for CekState (backward compat).

Profiling results (root cause of slowness):
  Pure eval: OCaml 1.6x FASTER than Python (expected)
  Aser: OCaml 28x SLOWER than Python (unexpected!)

Root cause: Python has a native optimized aser. OCaml runs the SX
adapter-sx.sx through the CEK machine — each aserCall is ~50 CEK
steps with closures, scope operations, string building.

Fix needed: native OCaml aser (like Python's), not SX adapter
through CEK machine.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-19 17:40:34 +00:00

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