giles 8958714c85 VM: closure env chain for GLOBAL_GET/SET + remove JIT skip ...

vm_closure now stores the original closure env (vm_closure_env).
GLOBAL_GET walks the closure env chain when the variable isn't in
vm.globals. GLOBAL_SET writes to the correct env in the chain.

This enables JIT compilation of all named functions regardless of
closure depth. No more closure skip check needed.

Pre-compile time back to ~7s (was 37s with closure skip).

Note: sx-parse sibling list parsing still has issues — the root
cause is in how the JIT-compiled letrec + OP_CLOSURE interacts
with the upvalue cell mechanism. Investigation ongoing.

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

2026-03-23 21:23:27 +00:00

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