24 lines
1.5 KiB
Markdown
24 lines
1.5 KiB
Markdown
# Phase‑20.28 — Self‑Host Bootstrap (Core + Builder)
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Purpose
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- Move from “Core bring‑up + ring0(Array minimal)” to a minimal, repeatable self‑host bootstrap loop: lang compiler emits MIR(JSON v0) that the VM Core executes, under a stable set of rules (effects/order/normalize).
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In‑scope (what we complete in this phase)
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- Core mir_call coverage (positive/negative) for day‑1 collections and strings; stable tags for unsupported.
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- Builder/Optimizer: effect hints and single‑pass emit order guarantees for mutating calls (set/push/pop/delete, etc.).
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- Normalize policy (SSOT): When plugins=OFF, do not force Method→Extern; honor Method/Constructor so ring0/builtin can operate. When plugins=ON, canonicalize to Extern as per SSOT.
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- Gate‑C parity: file/pipe × plugins ON/OFF — quiet output and rc mapping symmetry.
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- Minimal bootstrap profile (env/docs): the exact toggles for deterministic self‑host runs.
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Out‑of‑scope
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- Full language coverage or full std library. We target the smallest viable loop and expand next.
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- Performance tuning beyond basic correctness.
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Why split now
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- Phase‑20.27 finalized Core routing and added ring0(Array) minimal semantics. This phase focuses on closing the JSON→Core loop end‑to‑end for self‑host and stabilizing builder effects/order + normalize policy to avoid drift.
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Deliverables
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- Green canaries for Core mir_call (positive/negative), Gate‑C parity, and a small self‑host bootstrap smoke.
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- Docs: normalize policy, effects/order guarantees, bootstrap profile.
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