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hakorune/CHANGELOG.md
nyash-codex f6c5dc9e43 Phase 22.x WIP: LLVM backend improvements + MIR builder enhancements 
LLVM backend improvements:
- Add native LLVM backend support (NYASH_LLVM_BACKEND=native)
- Add crate backend selector with priority (crate > llvmlite)
- Add native_llvm_builder.py for native IR generation
- Add NYASH_LLVM_NATIVE_TRACE=1 for IR dump

MIR builder enhancements:
- Refactor lower_if_compare_* boxes for better code generation
- Refactor lower_return_* boxes for optimized returns
- Refactor lower_loop_* boxes for loop handling
- Refactor lower_method_* boxes for method calls
- Update pattern_util_box for better pattern matching

Smoke tests:
- Add phase2100 S3 backend selector tests (17 new tests)
- Add phase2120 native backend tests (4 new tests)
- Add phase2034 MIR builder internal tests (2 new tests)
- Add phase2211 TLV shim parity test

Documentation:
- Update ENV_VARS.md with LLVM backend variables
- Update CURRENT_TASK.md with progress
- Update README.md and CHANGELOG.md

Config:
- Add NYASH_LLVM_BACKEND env support in src/config/env.rs
- Update ny_mir_builder.sh for backend selection
- Update dispatch.rs for backend routing

Tools:
- Add tools/native_llvm_builder.py
- Update smokes/v2/profiles/quick/core/phase2100/run_all.sh

Known: Many Hako builder internal files modified for optimization
2025-11-09 23:40:36 +09:00

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Nyash Project – Changelog (Work in progress)

This changelog tracks high‑level milestones while Core MIR and Phase 12 evolve. For detailed per‑file history, see git log and docs under docs/development/roadmap/.

2025‑09‑06

Phase 22.3 (Kernel Minimal C Runtime — design wrap)

  • Added minimal C runtime crate (design-stage): crates/nyash_kernel_min_c (staticlib).
  • LLVM extern lowering: normalized nyash.console.* → nyash_console_* for C linkage.
  • Hako-first MIR emit stabilized via wrapper (tools/hakorune_emit_mir.sh): Stage‑B JSON is emitted with NYASH_JSON_ONLY=1 and sanitized; builder falls back to Rust CLI on failure (defaults keep quick green).

Prep for Phase 21.10 (LLVM line — crate backend)

  • Backend selector and S3 canaries exist; print EXE canary currently SKIP pending small normalization. Next: enable print EXE PASS with env‑guarded normalization in ny‑llvmc (no default behavior changes).
  • Core‑13 flip complete: code/tests enforce Core‑13 minimal kernel. Normalizations (Array/Ref→BoxCall, TypeCheck/Cast/Barrier/WeakRef unification) are ON by default via env (NYASH_MIR_CORE13=1). New tests validate normalization.
  • Docs synced: step‑50 marked done; DEV quickstart points to Core‑13 reference.

2025‑09‑04

  • Phase 12.7‑A complete: peek, continue, ? operator, lambda, field type annotations. Language reference updated.
  • Phase 12.7‑B (basic) complete: parser‑level desugaring for |>, ?., ??, +=/-=/*=/=, .. behind NYASH_SYNTAX_SUGAR_LEVEL.
  • Docs: language reference and Phase 12.7 README updated to reflect basic completion; extensions tracked under gated plan.
  • MIR Core migration: previously enforcing Core‑15 during transition; superseded by 2025‑09‑06 Core‑13 flip.

2025‑09‑03

  • Nyash ABI TypeBox integration stabilized across core boxes; differential tests added; loader defaults adjusted (builtin + plugins).

Notes

  • Core‑13 is canonical minimal kernel. Historical Core‑15 notes remain under docs/development/roadmap/ for reference.
  • Phase 12.7‑B desugaring is gated by NYASH_SYNTAX_SUGAR_LEVEL; tokenizer additions are non‑breaking.

2025‑09‑11 (Phase 15)

  • llvm: BoxCall arm cleanup — unreachable legacy block removed; arm now delegates solely to instructions::lower_boxcall.
  • llvm/docs: Documented LLVM lowering rules (StringBox i8* fast path, ExternCall ptr/handle selection, minimal fallback policy for string concat).
  • docs: Added ARCHITECTURE.md, LOWERING_LLVM.md, EXTERNCALL.md, PLUGIN_ABI.md.
  • nyrt: resolved plugin module duplication; build green.
  • builder: suppressed StringBox birth (constructed in LLVM path).

2025‑11‑06 — Phase 21.0 (Full Self‑Hosting)

  • Full Self‑Hosting achieved (DoD met):
    • S1/S2 determinism: v1 emit for const/compare/threeblock‑collect repeats 3× with identical normalized hash.
    • PRIMARY no‑fallback (hv1 inline): selfhost_v1 minimal Option‑A/B reps PASS (rc=42).
    • S3 (llvmlite + Nyash Kernel link + run): ternary collect (rc=44) / map set→size (rc=1) PASS. Auto‑runs when LLVM18/llvmlite is present.
  • Harness/root changes:
    • ny_mir_builder.sh routes v1 JSON directly to llvmlite harness; EXE links against libnyash_kernel.a.
    • Python LLVM builder fixes: cmp field normalization (Lt/Le/… → < <= …), ret PHI synthesis (avoid ret=0), flat mir_call shape acceptance.
  • Using/alias polish (prod): modules mapping preferred; missing module aliases added (StrCast / MethodAliasPolicy). Duplicate using in VM extern_provider cleaned.
  • Docs: phase‑21.0 marked COMPLETE (Quick Verify updated). CURRENT_TASK closed.

2025‑11‑06 — Phase 21.1 (LLVM C‑API emit‑only) finalize

  • C‑API path green for both reps (ternary rc=44 / map set→size rc=1). tools/smokes/v2/profiles/quick/core/phase2111/run_all.sh runs both.
  • VM handler cleanup (SSOT): removed duplicated hostbridge.extern_invoke branches in calls.rs; all externs route through extern_provider_dispatch.
  • Trace polish: consolidated [hb:*] to low‑noise, gated by HAKO_CABI_TRACE=1.
  • Docs updated: phase‑21.1 README set to COMPLETE with Quick Verify and troubleshooting.