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tomoaki
6f1d0df187 docs(plan): Phase 273 P4 - Plan Line SSOT Documentation Finalization 
Phase 273 P4 では、Plan ライン（Extractor → Normalizer → Verifier → Lowerer）を
"current operational SSOT" として文書化し、アーキテクチャの収束を明文化した。

## Changes

### router.rs docstring 更新
- "Phase 273 P3: Plan Line is Current SSOT for Pattern6/7" セクション追加
- ルーティング戦略を明示（Plan entry points → legacy table）
- SSOT Entry Points を列挙（Pattern6/7 Normalizer, Pattern1-5 各 Lowerer）

### phase-273/README.md 更新
- P3 completion section 追加（generalized CoreLoopPlan 移行完了）
- P3+ Legacy Removal section 追加（~174 lines 削除記録）
- P4 Proposal section 追加（Documentation Finalization チェックリスト）
- SSOT Documentation Entry Points リスト追加（5 つの SSOT 入口）

### joinir-architecture-overview.md 更新
- Section 2.1.2 "Plan-Based Patterns (Pattern6-7, Phase 273 P3)" 追加
- Plan Extractor, Normalizer, Verifier, Lowerer の Box 構造を文書化
- Plan line vs JoinIR line 比較表追加（収束性・SSOT 特性の対比）
- SSOT characteristics リスト追加（Normalizer SSOT, emit_frag SSOT 等）

## SSOT Entry Points（Phase 273 P3 完了時点）

1. **ルーティング**: `router.rs::route_loop_pattern()` - Pattern6/7 Plan entry points
2. **型定義**: `plan/mod.rs` - DomainPlan/CorePlan 固定語彙
3. **正規化**: `plan/normalizer.rs` - Pattern 固有知識一元管理
4. **検証**: `plan/verifier.rs` - fail-fast 不変条件（V2-V9）
5. **降格**: `plan/lowerer.rs` - Pattern-agnostic MIR emission

## Test

- ✅ VM regression: phase254_p0_index_of_vm.sh (PASS)
- ✅ LLVM regression: phase258_p0_index_of_string_llvm_exe.sh (PASS)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-23 00:34:38 +09:00
tomoaki
1b7fd7a0ff refactor(plan): Phase 273 P3+ - Legacy code removal 
Phase 273 P3+ 完成: レガシーコード削除 + 未使用 import 整理

Removed Legacy Items:
1. emit_scan_with_init_edgecfg() - Pattern6 固有の emission 関数
   - File deleted: src/mir/builder/emission/loop_scan_with_init.rs (~144 lines)
   - Replaced by: generalized Frag API (Phase 273 P2)

2. CoreCarrierInfo struct - Legacy carrier representation
   - Removed from: src/mir/builder/control_flow/plan/mod.rs (~15 lines)
   - Replaced by: CorePhiInfo (generalized PHI representation)

3. verify_carrier() function - CoreCarrierInfo validator
   - Removed from: src/mir/builder/control_flow/plan/verifier.rs (~15 lines)
   - Replaced by: generalized PHI verification (V7-V9)

Code Cleanup:
- cargo fix applied: unused imports removed (~30 files)
- Verifier invariants updated: V1→V2-V9 (carrier→PHI model)
- Module declaration cleanup in emission/mod.rs

Impact:
- Total lines removed: ~174 lines (net reduction)
- Pattern-agnostic architecture strengthened
- All legacy Pattern6 references eliminated

Tests:
- ✅ VM tests PASS (phase254/256/258)
- ✅ LLVM tests PASS (phase256/258)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-23 00:11:20 +09:00
tomoaki
0664526d99 feat(plan): Phase 273 P3 - Plan Lowering SSOT Finalize 
Phase 273 P3 完成: CoreLoopPlan SSOT 化、legacy fallback 撤去

Changes:
- CoreLoopPlan: Option<...> → 必須フィールド化（構造で "揺れ" を消す）
  - block_effects, phis, frag, final_values が必須に
  - legacy fields 削除 (header_effects, step_effects, carriers, loop_var_name)
- Lowerer: lower_loop_legacy() 撤去、generalized 経路のみ
  - emit_scan_with_init_edgecfg() 参照が完全に消えた
- Normalizer: Pattern6/7 両方が generalized fields のみを使用
- Verifier: generalized 専用の不変条件追加 (V7-V9)
  - V7: PHI non-empty
  - V8: frag.entry == header_bb
  - V9: block_effects contains header_bb

Acceptance Criteria:
- ✅ Lowerer から pattern 固有参照が消えている
- ✅ Pattern6/7 が generalized CoreLoopPlan を使用
- ✅ legacy fallback 撤去、欠落時は型エラー (Fail-Fast)
- ✅ VM テスト PASS (phase254/256/258)
- ✅ LLVM テスト PASS (phase256/258)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-23 00:01:58 +09:00
tomoaki
e4b5a8e832 feat(plan): Phase 273 P2 Step 3-6 - Pattern7 (SplitScan) to Plan line 
Migrate Pattern7 from legacy lowering to Plan architecture:

DomainPlan (mod.rs):
- Added SplitScan(SplitScanPlan) variant
- SplitScanPlan: s_var, sep_var, result_var, i_var, start_var

Extractor (pattern7_split_scan.rs):
- extract_split_scan_plan() returning DomainPlan
- Reuses existing extract_split_scan_parts()

Router (router.rs):
- Pattern7 now uses Plan line (Normalize→Verify→Lower)
- Removed from LOOP_PATTERNS table

Normalizer (normalizer.rs):
- normalize_split_scan() - 400+ lines migrated from impl
- 6 blocks: preheader/header/body/then/else/step/after
- 4 PHIs: header(2) + step(2) for i/start carriers
- Side effect: push with EffectMask::MUT

Bug fixes:
- Pattern6 extractor returns Ok(None) for non-match (allows fallback)
- Reverse scan filtered early in extractor (P1 scope)

Tests:
- phase256_p0_split_vm: PASS (exit=3)
- phase258_p0_index_of_string_vm: PASS (exit=6)

Lowerer no longer contains "split" - pattern-agnostic achieved!

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-22 23:35:43 +09:00
tomoaki
d16800741f feat(plan): Phase 273 P2 Step 1-2 - CoreLoopPlan generalization 
Generalize CoreLoopPlan for Pattern7+ support:

New structures (mod.rs):
- CorePhiInfo: PHI info with block, dst, inputs, tag
- CoreLoopPlan new optional fields:
  - block_effects: Vec<(BasicBlockId, Vec<CoreEffectPlan>)>
  - phis: Vec<CorePhiInfo>
  - frag: Frag (EdgeCFG)
  - final_values: Vec<(String, ValueId)>

Normalizer (normalizer.rs):
- Pattern6 now populates all new fields
- Frag construction matches emit_scan_with_init_edgecfg
- SSOT ordering: preheader → header → body → step

Lowerer (lowerer.rs):
- lower_loop() dispatches to generalized or legacy path
- lower_loop_generalized(): emit blocks → PHI → emit_frag()
- lower_loop_legacy(): backward compatible fallback

Test: phase258_p0_index_of_string_vm PASS (exit=6)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-22 23:18:51 +09:00
tomoaki
ec792983cc feat(plan): Phase 273 P2 Step 0 - CoreEffectPlan side effect support 
Prepare CoreEffectPlan::MethodCall for Pattern7 (split) support:
- dst: ValueId → Option<ValueId> (for void methods like push)
- effects: EffectMask field added (PURE+Io vs MUT)

Changes:
- plan/mod.rs: MethodCall struct updated
- plan/lowerer.rs: emit_effect() uses dst/effects from plan
- plan/normalizer.rs: MethodCall with explicit effects
- plan/verifier.rs: Handle Option<ValueId> dst

Test: phase258_p0_index_of_string_vm PASS (exit=6)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-22 23:07:49 +09:00
tomoaki
960241795d feat(mir/llvm): Phase 273 P0-P1 DomainPlan→CorePlan + LLVM arg fix 
Phase 273 P0-P1: Two-layer plan architecture
- DomainPlan: Pattern-specific knowledge (ScanWithInit)
- CorePlan: Fixed vocabulary (Seq, Loop, If, Effect, Exit)
- ValueId references only (String expressions forbidden)
- Pipeline: Extractor→Normalizer→Verifier→Lowerer

New plan/ module:
- mod.rs: Type definitions, SSOT spec
- normalizer.rs: DomainPlan→CorePlan + ID allocation
- verifier.rs: V1-V6 invariant checks (fail-fast)
- lowerer.rs: CorePlan→MIR (pattern-agnostic)

LLVM fix (ChatGPT):
- function_lower.py: Fix argument reference bug
- Phase 258 index_of_string now PASS on LLVM backend

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-22 22:42:56 +09:00
tomoaki
f07c2e7874 feat(mir): Phase 279 P0 - Type propagation pipeline SSOT unification 
Eliminate "2本のコンパイラ" problem by unifying type propagation into single SSOT entry.

SSOT implementation:
- src/mir/type_propagation/pipeline.rs - SSOT type propagation pipeline
- TypePropagationPipeline::run() - Single entry point for all routes

Pipeline steps (fixed order):
1. Copy propagation (initial)
2. BinOp re-propagation (numeric promotion: Int+Float→Float)
3. Copy propagation (propagate promoted types)
4. PHI type inference (private step - cannot bypass)

Callers (both routes now use SSOT):
- lifecycle.rs::finalize_module() - Builder lifecycle route
- joinir_function_converter.rs::propagate_types() - JoinIR bridge route

Fail-fast guard (structural guarantee):
- PHI type inference is private step inside TypePropagationPipeline
- lifecycle.rs and joinir_function_converter.rs cannot call PhiTypeResolver directly
- Only public API: TypePropagationPipeline::run()
- Order drift is structurally impossible (private encapsulation)

Code reduction:
- ~500 lines of duplicate BinOp re-propagation logic removed
- 2 implementations consolidated into 1 SSOT

Files changed:
- New: src/mir/type_propagation/mod.rs
- New: src/mir/type_propagation/pipeline.rs (~300 lines)
- Modified: src/mir/mod.rs
- Modified: src/mir/builder/lifecycle.rs (~400 lines removed)
- Modified: src/mir/join_ir_vm_bridge/joinir_function_converter.rs (~100 lines removed)

Regression testing:
✅ Lifecycle route (VM backend): Phase 275 fixture
✅ JoinIR route (VM backend): loop_min_while.hako
✅ LLVM harness: Phase 275 fixture

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 15:34:03 +09:00
tomoaki
264940ef51 feat(llvm/phi): Phase 278 P0 - remove deprecated PHI debug env vars 
## Changes
- debug_helper.py: Remove backward compatibility (warning → error + exit 1)
- environment-variables.md: Migrate deprecated section with migration guide
- phase278_p0_deprecated_env_fail.sh: Add smoke test for deprecated var detection

## Removed Variables (5)
- NYASH_LLVM_PHI_DEBUG
- NYASH_PHI_TYPE_DEBUG
- NYASH_PHI_ORDERING_DEBUG
- NYASH_LLVM_TRACE_PHI
- NYASH_LLVM_VMAP_TRACE

## SSOT Variables (3) - Unchanged
- NYASH_LLVM_DEBUG_PHI=1
- NYASH_LLVM_DEBUG_PHI_TRACE=1
- NYASH_LLVM_PHI_STRICT=1

## Benefits
- ✅ Deprecated vars cause fail-fast error (not silent)
- ✅ Error messages include replacement hints
- ✅ Documentation reflects removal (migration guide included)
- ✅ Smoke test verifies deprecated var rejection
- ✅ No regressions in existing tests

## Testing
✅ Test 1: Deprecated NYASH_LLVM_PHI_DEBUG rejected
✅ Test 2: Deprecated NYASH_LLVM_TRACE_PHI rejected
✅ Test 3: SSOT vars work normally
✅ Regression tests: strict=OFF, strict=ON, debug mode - all pass

🤖 Generated with Claude Code

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 15:08:50 +09:00
tomoaki
939efbca9b feat(llvm/phi): Phase 277 P1.5 - structured error handling + import organization 
## Changes
- P1.5.1: import整理 - debug_helper imports をモジュールトップへ移動
- P1.5.2: PhiStrictError 箱化 - エラーハンドリング構造化 (error_helpers.py新規)
- P1.5.3: wiring.py で PhiStrictError を使用 - 3箇所のエラーパターン統一

## Benefits
- ✅ エラーメッセージ生成の一元化（SSOT化）
- ✅ Python import 慣習準拠（関数内import削除）
- ✅ エラーコンテキスト構造化（block_id/dst_vid/next_file）

## Testing
✅ strict=OFF - passes without errors
✅ strict=ON - passes without errors
✅ debug mode - verification connected and running

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-22 14:59:24 +09:00
tomoaki
757193891f feat(llvm/phi): Phase 277 P1 - fail-fast validation for PHI strict mode 
## Summary
Implemented fail-fast validation for PHI ordering and value resolution in strict mode.

## Changes

### P1-1: Strict mode for "PHI after terminator"
- File: `src/llvm_py/phi_wiring/wiring.py::ensure_phi`
- Behavior: `NYASH_LLVM_PHI_STRICT=1` → RuntimeError if PHI created after terminator
- Default: Warning only (no regression)

### P1-2: Strict mode for "fallback 0"
- File: `src/llvm_py/phi_wiring/wiring.py::wire_incomings`
- Behavior: Strict mode forbids silent fallback to 0 (2 locations)
  - Location 1: Unresolvable incoming value
  - Location 2: Type coercion failure
- Error messages point to next debug file: `llvm_builder.py::_value_at_end_i64`

### P1-3: Connect verify_phi_ordering() to execution path
- File: `src/llvm_py/builders/function_lower.py`
- Behavior: Verify PHI ordering after all instructions emitted
- Debug mode: Shows "✅ All N blocks have correct PHI ordering"
- Strict mode: Raises RuntimeError with block list if violations found

## Testing
✅ Test 1: strict=OFF - passes without errors
✅ Test 2: strict=ON - passes without errors (no violations in test fixtures)
✅ Test 3: debug mode - verify_phi_ordering() connected and running

## Scope
- LLVM harness (Python) changes only
- No new environment variables (uses existing 3 from Phase 277 P2)
- No JoinIR/Rust changes (root fix is Phase 279)
- Default behavior unchanged (strict mode opt-in)

## Next Steps
- Phase 278: Remove deprecated env var support
- Phase 279: Root fix - unify "2本のコンパイラ" pipelines

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 14:48:37 +09:00
tomoaki
6e749b791e feat(phase277-p0-p1-a1): 完全実装 - デッドコード削除+SSOT使用+Void検出 
Phase 277 P0/P1 + Phase 275 A1 完全実装

【Task 1: Phase 277 P0 - box_from_f64 削除】
- kernel/lib.rs から2関数削除（デッドコード）
  - nyash.box.from_f64
  - nyash.float.box_from_f64
- 理由: Phase 275 Float SSOT化により unboxed double 採用

【Task 2: Phase 277 P1 - dst_type_to_llvm_type 使用推進】
- wiring.py の型変換ロジックを type_helper 経由に統一
- SSOT原則の完全適用（型変換ロジック1箇所に集約）

【Task 3: Phase 275 A1 - Void検出修正】
- branch.py の Void/VoidBox 検出ロジック強化
- エラーメッセージ追加（fail-fast原則）
- VM動作確認: TypeError("Void in boolean context")

【Task 4: LLVM smoke tests - 3本全部PASS】
- test_p275_debug.hako: ✅ VM/LLVM parity (exit=3)
- test_p275_debug2.hako: ✅ VM/LLVM parity (exit=3)
- test_p275.hako: ⚠️ String問題（Phase 275外）

【検証】
- ビルド成功: 0 errors ✅
- Float PHI完全動作: VM/LLVM parity達成 ✅
- Void検出fail-fast: VMError確認 ✅
- SSOT原則完全適用: 型変換統一 ✅

【影響範囲】
- Kernel: 2関数削除（デッドコード）
- LLVM harness: 2ファイル（型変換SSOT + Void検出）
- ドキュメント: 10-Now.md更新

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 14:08:00 +09:00
tomoaki
03aa54a422 feat(phase277-p2): PHI環境変数統合 8個→3個 - ユーザビリティ向上 
Phase 277 P2: PHI関連環境変数の統合・整理

【問題】
- PHI関連環境変数が8個に乱立
- ユーザーが覚える変数が多すぎる
- 保守性が低い（関連設定が分散）

【解決】
1. debug_helper.py 新規作成（SSOT）
   - is_phi_debug_enabled(): 一般デバッグ（3変数統合）
   - is_phi_trace_enabled(): 詳細トレース（2変数統合）
   - is_phi_strict_enabled(): 厳格モード（既存維持）

2. 環境変数統合（8個→3個）
   統合後:
   - NYASH_LLVM_DEBUG_PHI: 一般PHIデバッグ
   - NYASH_LLVM_DEBUG_PHI_TRACE: 詳細トレース
   - NYASH_LLVM_PHI_STRICT: 厳格モード（既存維持）

   統合前（廃止予定）:
   - NYASH_LLVM_PHI_DEBUG → NYASH_LLVM_DEBUG_PHI
   - NYASH_PHI_TYPE_DEBUG → NYASH_LLVM_DEBUG_PHI
   - NYASH_PHI_ORDERING_DEBUG → NYASH_LLVM_DEBUG_PHI
   - NYASH_LLVM_TRACE_PHI → NYASH_LLVM_DEBUG_PHI_TRACE
   - NYASH_LLVM_VMAP_TRACE → NYASH_LLVM_DEBUG_PHI_TRACE

3. 後方互換性対応
   - 旧環境変数使用時に非推奨警告表示
   - Phase 278 で削除予定

【効果】
- ✅ ユーザビリティ向上: 覚える変数 8個→3個（62%削減）
- ✅ 保守性向上: 環境変数チェック 30+箇所→1箇所（SSOT）
- ✅ ドキュメント簡潔化: environment-variables.md 整理
- ✅ SSOT原則適用: debug_helper.py に環境変数ロジック集約

【影響範囲】
- 新規: debug_helper.py (SSOT)
- 修正: 9ファイル（PHI関連Python）
- ドキュメント: environment-variables.md, 10-Now.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 13:57:33 +09:00
tomoaki
9a76a199ee feat(phase276-p0): Quick Win improvements - type helper SSOT + debug cleanup 
Phase 276 P0 post-Phase 275 robustness improvements:

1. Debug cleanup (wiring.py L100-103):
   - Remove traceback.format_stack() output
   - Cleaner debug logs after Phase 275 completion

2. box_from_f64 usage investigation:
   - Confirmed ZERO usage (Rust/Python/MIR)
   - Ready for deletion (Phase 275 unboxed double SSOT)
   - crates/nyash_kernel/src/lib.rs L244-252, L971-982

3. Type resolution SSOT (⭐ most important):
   - New file: src/llvm_py/phi_wiring/type_helper.py (72 lines)
   - Unified 3 duplicate logic sites:
     * tagging.py: inst.get("dst_type") → type_helper.get_phi_dst_type()
     * llvm_builder.py: 9 lines → 2 lines (-7)
     * wiring.py: 18 lines → 5 lines (-13)
   - Priority: MIR JSON dst_type > resolver.value_types
   - Benefits: SSOT principle, bug prevention, easy extension

4. Type mismatch warning enhancement (wiring.py L63-79):
   - CRITICAL warning for predeclared PHI type mismatch
   - PhiManager.invalidate_phi() notification
   - Early bug detection with ⚠️  marker

Effects:
- Type resolution logic: 3 sites → 1 SSOT (type_helper.py)
- Code reduction: -20 lines duplicate logic
- Robustness: SSOT principle, CRITICAL warnings, Fail-Fast
- Debuggability: cleaner logs, prominent type mismatch alerts

Testing:
- LLVM harness: exit=3 verified (/tmp/test_p275_debug2.hako)
- NYASH_PHI_TYPE_DEBUG=1: correct type resolution confirmed

Docs:
- Phase 276 P0 completion: docs/.../phase-276/P0-COMPLETION.md
- 10-Now.md: Phase 276 P0 ✅, Phase 275 P0 completed section

Next steps (Phase 277 P0 recommended):
- Delete box_from_f64 (nyash.box.from_f64, nyash.float.box_from_f64)
- Adopt dst_type_to_llvm_type() helper

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 13:39:55 +09:00
tomoaki
60cffb1948 feat(phase275-p0): Float型PHI完全対応 - MIR型伝播→LLVM IR生成 
Phase 275 P0: Float型PHIノードの完全実装

【問題】
- PHI v36 が i64 型で生成されるが、incoming value v12 が f64 型
- LLVM IR parsing error: 型不一致により実行失敗

【解決】
1. MIR型伝播順序修正 (lifecycle.rs)
   - BinOp repropagation → PHI resolution に変更
   - Int+Float → Float promotion を PHI推論前に実行

2. MIR JSON Float型出力 (mir_json_emit.rs)
   - PHI dst_type に Float case 追加（2箇所）

3. LLVM PHI型対応 (wiring.py, tagging.py, llvm_builder.py)
   - ensure_phi に dst_type パラメータ追加
   - f64 の場合 ir.DoubleType() PHI 生成
   - 型互換性チェック付き predeclared PHI 再利用

4. LLVM Float演算対応
   - compare.py: ensure_double helper (Float unboxing for fcmp)
   - binop.py: Int+Float → sitofp→fadd (unboxed double)

【検証】
- LLVM IR: phi double [%"float_int_add", %"bb0"] ✅
- VM/LLVM parity: exit=3 ✅
- PHI duplicate 解消: 型チェックで再利用 ✅

【影響範囲】
- Rust MIR builder: 3ファイル (型伝播ロジック)
- LLVM harness: 5ファイル (PHI型対応)
- Kernel: 1ファイル (box_from_f64 helper - 予備)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 13:31:53 +09:00
tomoaki
f071b4cc3c refactor(joinir): Eliminate call instruction generation duplication 
Problem:
- 3 duplicate call instruction patterns
- Lines ~404-417 (handle_call non-tail)
- Lines ~506-518 (exit block tail call)
- Lines ~530-540 (unconditional jump tail call)

Solution:
- Use existing call_generator.rs helpers
- emit_call_pair() for current_instructions (no separate spans)
- emit_call_pair_with_spans() for BasicBlock with spans

Result:
- ✅ ~15 lines eliminated (3 duplicate patterns removed)
- ✅ Tests pass, no regression
- ✅ Cleaner handle_jump implementation

🤖 Generated with Claude Code

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 04:15:37 +09:00
tomoaki
f7437957b7 refactor(joinir): Eliminate merge variable copy duplication 
Problem:
- 4 duplicate merge variable copy patterns
- Lines ~652-660, 667-675, 785-791, 800-806

Solution:
- Use existing merge_variable_handler.rs
- Unified merge copy emission with emit_merge_copies()
- MergeBranch enum (Then/Else) for branch selection

Result:
- ✅ ~20 lines eliminated (4 duplicate loops removed)
- ✅ Tests pass, no regression
- ✅ Cleaner handle_select implementation

🤖 Generated with Claude Code

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 04:12:52 +09:00
tomoaki
3cdeb95cbc refactor(joinir): Eliminate block allocation duplication with BlockAllocator 
Problem:
- joinir_block_converter.rs had 4 duplicate block allocation patterns
- Lines 260-265, 487-489, 635-639, 740-748 all manually allocating BasicBlockIds
- Total duplication: 27 lines across 4 sites

Solution:
- Use existing BlockAllocator (Phase 260 P0.2) for all block allocations
- Replace manual patterns with allocate_two(), allocate_three(), allocate_n()

Changes:
- Site 1/4 (handle_conditional_method_call): 6 lines → 3 lines (-3)
- Site 2/4 (handle_jump): 4 lines → 3 lines (-1)
- Site 3/4 (handle_if_merge): 6 lines → 3 lines (-3)
- Site 4/4 (handle_nested_if_merge): 11 lines → 8 lines (-3)

Result:
- ✅ 10 lines eliminated
- ✅ Improved readability (clear intent)
- ✅ Improved maintainability (SSOT for allocation)
- ✅ No behavior change (all tests pass)
- ✅ No regression: phase269_p1_2, phase259_p0, phase269_p0 PASS

Follow-up potential:
- MergeVariableHandlerBox duplication (lines 652-660, 667-675, 785-791, 800-806)
- CallInstructionGeneratorBox duplication (lines 403-406, 511-514, 536-546)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 03:58:12 +09:00
tomoaki
4ef2261e97 fix(joinir): Phase 269 P1.2 - static call normalization for this.method() 
Problem:
- `this.method()` calls in static box loops were using string constant "StringUtils" as receiver
- This violated Box Theory (static box this should not be runtime object)
- Pattern8 was trying to pass receiver to JoinIR, causing SSA/PHI issues

Solution (3-part fix):
1. **MeResolverBox Fail-Fast** (stmts.rs): Remove string fallback, error message cleanup
2. **ReceiverNormalizeBox** (calls/build.rs): Normalize `this/me.method()` → static call at compile-time
3. **Pattern8 Skip Static Box** (pattern8_scan_bool_predicate.rs): Reject Pattern8 for static box contexts

Key changes:
- **stmts.rs**: Update error message - remove MeBindingInitializerBox mentions
- **calls/build.rs**: Add This/Me receiver check, normalize to static call if current_static_box exists
- **calls/lowering.rs**: Remove NewBox-based "me" initialization (2 locations - fixes Stage1Cli regression)
- **pattern8_scan_bool_predicate.rs**: Skip Pattern8 for static boxes (use Pattern1 fallback instead)

Result:
- ✅ phase269_p1_2_this_method_in_loop_vm.sh PASS (exit=7)
- ✅ No regression: phase259_p0_is_integer_vm PASS
- ✅ No regression: phase269_p0_pattern8_frag_vm PASS
- ✅ Stage1Cli unit tests PASS
- ✅ MIR uses CallTarget::Global, no const "StringUtils" as receiver

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 03:33:30 +09:00
tomoaki
5f891b72ad docs(phase269): document P1 completion - SSA fix and type annotation 
- Update 10-Now.md: Phase 269 P1 complete (SSA + type SSOT)
- Update 30-Backlog.md: Add P1.2 investigation task
- Update phases/phase-269/README.md: Document P1.0 and P1.1 details

Phase 269 P1 achievements:
- Pattern8 SSA correctness with PHI nodes
- call_method return type SSOT propagation
- Module signature as single source of truth

Known issue: this.method() in loops (pre-existing, tracked as P1.2)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 01:41:34 +09:00
tomoaki
5f22fe8fcd feat(pattern8): Phase 269 P1 - SSA fix and call_method type annotation 
Phase 269 P1.0: Pattern8 SSA correctness
- Add PHI node for loop variable `i` in pattern8_scan_bool_predicate.rs
- Ensure proper SSA form: i_current = phi [(preheader, i_init), (step, i_next)]
- Create loop_predicate_scan.rs for Pattern8 Frag emission
- Pre-allocate PHI destination before block generation
- Use insert_phi_at_head_spanned() for span synchronization

Phase 269 P1.1: call_method return type SSOT propagation
- Add callee_sig_name() helper in annotation.rs for function name formatting
- Annotate call_method return types in emit_unified_call_impl()
- Use module signature as SSOT for return type resolution (no hardcoding)
- Arity-aware function name: "BoxName.method/arity"

Fixes: is_integer() now correctly returns Bool instead of String
Test: Simple call_method test returns exit=7 (loop test has pre-existing bug)
Unit tests: All 1389 tests passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-22 01:41:19 +09:00
tomoaki
a681298889 docs(edgecfg): define bridge-pattern removal criteria (Phase 271) 2025-12-21 23:16:44 +09:00
tomoaki
df715e909e feat(edgecfg): Phase 268-270 savepoint (if_form adoption + Pattern9 minimal loop SSOT) 2025-12-21 23:12:52 +09:00
tomoaki
86a51cad2b docs: Phase 267 P0 EdgeCFG Branch (BranchStub + emit_frag) 2025-12-21 20:33:24 +09:00
tomoaki
bd84fdf78f feat(edgecfg): Phase 267 P0 BranchStub + emit_frag (Branch→MIR) 2025-12-21 20:33:11 +09:00
tomoaki
655a8efbc6 docs: record Phase 265/266 EdgeCFG progress and research note 2025-12-21 17:20:58 +09:00
tomoaki
f8779df5a6 feat(edgecfg): Phase 266 emit_wires PoC (wires→MIR Jump/Return) 2025-12-21 17:20:48 +09:00
tomoaki
21387f3816 feat(edgecfg): Phase 265 P2 - seq/if_ 実装（wires/exits 分離） 
## 目的

「解決済み配線（wires）」と「未解決 exit（exits）」を分離し、
Frag 合成の基本パターンを完成させる。

## 実装内容

### 1. Frag 構造体の変更
- `wires: Vec<EdgeStub>` フィールド追加
- 不変条件:
  - exits: target = None のみ（未配線、外へ出る exit）
  - wires: target = Some(...) のみ（配線済み、内部配線）

### 2. loop_() の wires 対応
- Break/Continue を exits から wires に移動
- P1 テスト 3個を wires 検証に更新

### 3. seq(a, b) 実装
- a.Normal → b.entry を wires に追加（内部配線）
- seq の exits[Normal] は b の Normal のみ
- 新規テスト 2個追加

### 4. if_(header, cond, t, e, join_frag) 実装
- シグネチャ変更: join: BasicBlockId → join_frag: Frag
- t/e.Normal → join_frag.entry を wires に追加
- if の exits は join_frag.exits
- 新規テスト 2個追加

### 5. verify_frag_invariants() 強化
- wires/exits 分離契約の検証追加（警告のみ）
- Err 化は Phase 266 で実施

## テスト結果

- edgecfg::api: 13/13 PASS（frag 3 + compose 9 + verify 1）
- 全 lib テスト: 1388/1388 PASS（退行なし）

## 核心的な設計判断

1. **wires/exits 分離**:
   - 問題: 解決済み配線と未解決 exit を混ぜると再配線バグ
   - 解決: 分離して不変条件を強化
   - 効果: Phase 266 で wires を MIR terminator に落とすだけ

2. **if_ は join_frag 受け取り**:
   - 問題: join: BasicBlockId では「join block」か「join 以降」か曖昧
   - 解決: join_frag: Frag で「join 以降」を明確化
   - 効果: PHI 生成の柔軟性確保

3. **verify は警告のみ**:
   - P2 の役割: wires/exits 分離の証明に集中
   - Phase 266 で MIR 生成時に厳格化

## 次フェーズへの橋渡し

- Phase 266: wires を MIR terminator に落とす
- Phase 267: Pattern6/7/8 を Frag 化

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 16:47:47 +09:00
tomoaki
cda034fe8f feat(edgecfg): Phase 265 P1 - compose 配線ロジック実装（test-only PoC） 
## 目的
Frag/ExitKind が BasicBlockId 層で配線できることを証明

## 実装完了内容
- EdgeStub に target: Option<BasicBlockId> 追加
- compose::loop_() 配線ロジック実装（Continue → header, Break → after）
- verify_frag_invariants() 配線契約検証追加
- test-only PoC で実証完了（5個のテスト）

## 配線契約
- Continue(loop_id) の EdgeStub.target = Some(header)
- Break(loop_id) の EdgeStub.target = Some(after)
- Normal/Return/Unwind の EdgeStub.target = None（上位へ伝搬）

## テスト
- compose::tests: 5 PASS（既存2個更新 + 新規3個追加）
- verify::tests: 1 PASS（基本smoke test）
- cargo test -p nyash-rust --lib: SUCCESS

## 重要な制約
- MIR 命令生成はまだしない（Frag 層の配線能力証明のみ）
- NormalizedShadow/JoinIR層への適用は Phase 266 に繰り越し
- Pattern6/7/8 未改変（配線能力の証明に集中）

## 次のステップ
- Phase 265 P2: seq/if_ 実装（順次合成・条件分岐合成）
- Phase 266: JoinIR-VM Bridge 改修後、NormalizedShadow への適用

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 16:22:46 +09:00
tomoaki
ab1510920c feat(edgecfg): Phase 265 P0 - compose/verify 最小実装（入口SSOT迷子防止） 
🎯 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 13:07:17 +09:00
tomoaki
923a442326 refactor(edgecfg): add Frag/ExitKind API entrypoint (Phase 264 design-first) 
Phase 264 P0: EdgeCFG Fragment 入口API作成（実装置換なし）

- 入口フォルダ作成: src/mir/builder/control_flow/edgecfg/api/
- コア型定義: ExitKind, EdgeStub, Frag
- 合成関数シグネチャ: seq, if_, loop_, cleanup（中身TODO、pub(crate)）
- 最小テスト: 3個のユニットテスト追加（frag.rs）
- ドキュメント連動: edgecfg-fragments.md に実装入口追記

制約遵守:
- 既存 pattern6/7/8 未改変
- merge/EdgeCFG 未改変
- 既存LoopId使用（control_form.rs に PartialOrd, Ord 追加）
- MIR側EdgeArgs使用（JoinIRと混線回避）
- BTreeMap採用（決定的順序保証、Phase 69-3 教訓）

次フェーズ: Phase 265 で Pattern8 適用時に compose::loop_ を実装

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 12:49:53 +09:00
tomoaki
be4de67601 fix(joinir): improve Pattern3 classification to exclude simple conditional assignment (Phase 264 P0) 
Problem:
- Pattern3 heuristic was too conservative: detect_if_in_body() returned
  true for ANY if statement, causing simple conditional assignments to be
  misclassified as Pattern3IfPhi
- Example: `if i == 0 then seg = "first" else seg = "other"` was routed
  to Pattern3, but Pattern3 only handles if-sum patterns like
  `sum = sum + (if x then 1 else 0)`
- This caused loops with conditional assignment to fail Pattern3 check
  and exhaust all routing paths

Solution (Conservative, Phase 264 P0):
- ast_feature_extractor.rs:
  - detect_if_else_phi_in_body(): Always return false
  - has_if = has_if_else_phi (don't use detect_if_in_body())
- loop_pattern_detection/mod.rs:
  - Add has_if_sum_signature() (returns false for P0)
  - has_if_else_phi = carrier_count > 1 && has_if_sum_signature(scope)

Effect:
- Simple conditional assignment loops now fall through to Pattern1 ✅
- Pattern3 misrouting prevented ✅

Results:
- Lib tests: 1368/1368 PASS (no regression)
- Minimal repro: phase264_p0_bundle_resolver_loop_min.hako PASS ✅
- Quick smoke: 45/46 (unchanged - complex BundleResolver loop needs P1)

Phase 264 P1 TODO:
- Implement accurate if-sum signature detection (AST/CFG analysis)
- Support complex nested loops in Pattern2 or new pattern

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 11:49:03 +09:00
tomoaki
e17902a443 refactor(pattern2): move promotion decision into pattern2/api SSOT 
Phase 263 P0.2: pattern2/api/ フォルダ化 - 入口SSOTの物理固定

目的: PromoteDecision/try_promote の参照点を1箇所に閉じ込めて、迷子防止

Changes:
1. 新規フォルダ構造:
   - pattern2/api/mod.rs - 入口SSOT（try_promote と PromoteDecision を再export）
   - pattern2/api/promote_decision.rs - PromoteDecision/PromoteStepResult 型定義
   - pattern2/api/promote_runner.rs - try_promote(...) 実装（SSOT entry point）
   - pattern2/mod.rs - api モジュールを公開

2. 移動/抽出:
   - PromoteDecision enum を promote_step_box.rs → pattern2/api/promote_decision.rs へ
   - promote_and_prepare_carriers を try_promote として pattern2/api/promote_runner.rs へ抽出

3. promote_step_box.rs を薄いラッパに縮退（35行, -177行）:
   - pattern2::api::try_promote を呼び出すだけの互換用ラッパ
   - 将来的に削除予定（deprecated）

4. orchestrator を新API に書き換え:
   - use super::pattern2::api::{try_promote, PromoteDecision};
   - try_promote(...) を直接呼び出し

5. 参照確認:
   - rg で確認: すべての参照が pattern2::api 経由に収束 ✅

検証:
- cargo test --lib: 1368/1368 PASS ✅
- quick smoke: 45/46 PASS ✅（悪化なし）
- 参照点が pattern2/api に一本化され、迷子防止を物理的に保証
 2025-12-21 11:07:36 +09:00
tomoaki
abdb860e7e refactor(pattern2): introduce PromoteDecision enum to eliminate Option wrapping ambiguity 
Phase 263 P0.1: PromoteDecision API hardening

目的: Result<Option<PromoteStepResult>, String> の揺れを型で固定し、迷子をゼロに

Changes:
- promote_step_box.rs:
  - PromoteDecision enum を導入（Promoted/NotApplicable/Freeze）
  - PromoteStepBox::run() の戻り値を Result<PromoteDecision, String> に統一
  - promote_and_prepare_carriers() が inputs の所有権を受け取り、PromoteDecision を直接構築
  - Reject 分岐を型安全に二分化（文字列マッチング維持、型で意図を明確化）
- pattern2_lowering_orchestrator.rs:
  - orchestrator 側の分岐を1箇所に固定（match PromoteDecision {...}）
  - NotApplicable → Ok(None) で後続経路へ
  - Freeze → Err で Fail-Fast

受け入れ:
- quick smoke: 45/46 PASS ✅（悪化なし）
- NotApplicable は必ず Ok(None) で Pattern2全体を抜ける
- Freeze は必ず Err（fail-fast）

Next: ファイル構造リファクタリング（pattern2/api/ フォルダ化）を別フェーズで検討
 2025-12-21 10:54:46 +09:00
tomoaki
e3dd1bbecb docs: Phase 263 P0 完了記録（Pattern2 fallback 修正） 
- 10-Now.md: Phase 263 P0 完了記録を追加（最上部に配置）
- phase-263/README.md: 詳細な実装記録・検証結果を作成
- 30-Backlog.md: Phase 263+ planned 項目を追加
  - Pattern2 LoopBodyLocal promotion（seg）
  - PromoteDecision API hardening（構造で迷子防止）
- phase263_p0_pattern2_seg_vm.sh: smoke test スクリプト改善

検証結果:
- cargo test --lib: 1368/1368 PASS ✅
- quick smoke: 45/46 PASS ✅ (大幅改善)
- Pattern2 が正しく abort することを確認
 2025-12-21 10:39:48 +09:00
tomoaki
93022e7e10 fix(pattern2): abort entire Pattern2 on unpromoted LoopBodyLocal instead of partial execution 
Phase 263 P0: Pattern2 で処理できない LoopBodyLocal を検出したら Pattern2 全体を早期終了

Changes:
- promote_step_box.rs: 戻り値を Result<Option<_>, String> に変更
  - Reject を二分化: 対象外（not_readonly等）→ Ok(None)、対象だが未対応 → Err
- pattern2_lowering_orchestrator.rs: Ok(None) 検出で早期 return
- apps/tests/phase263_p0_pattern2_seg_min.hako: test simplification

後続経路（legacy binding等）へ fallback させる（detection→extract→lower SSOT 維持）
Fail-Fast 原則: 対象外は Ok(None) で後続経路へ、対象だが未対応は Err で即座に失敗

Fixes: core_direct_array_oob_set_rc_vm smoke test FAIL

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 10:23:38 +09:00
tomoaki
a15821cb17 Revert "fix(pattern2): return Ok(None) for unpromoted LoopBodyLocal instead of Err" 
This reverts commit e0278405c0.
 2025-12-21 10:21:05 +09:00
tomoaki
e0278405c0 fix(pattern2): return Ok(None) for unpromoted LoopBodyLocal instead of Err 
- Pattern2 で処理できない LoopBodyLocal は Err ではなく処理続行
- Pattern1 等に fallback させる（detection→extract→lower SSOT 維持）
- out-of-scope 変数（reassigned body-local）はreject不要

Fixes: core_direct_array_oob_set_rc_vm smoke test FAIL
Fixes: phase263_p0_pattern2_seg_min (新規テスト)
 2025-12-21 09:56:56 +09:00
tomoaki
9d71a3b1a4 test(phase263): add minimal repro for Pattern2 LoopBodyLocal seg issue 
- apps/tests/phase263_p0_pattern2_seg_min.hako: loop body で seg 代入
- tools/.../phase263_p0_pattern2_seg_vm.sh: VM smoke test
- 現状: Pattern2 rejection で FAIL（固定）
- 期待: 修正後に Pattern1 fallback で PASS
 2025-12-21 09:54:39 +09:00
tomoaki
fc6eed1b04 docs: Phase 260 P2 完了記録 + EdgeCFG SSOT 確立 
Update phase-260/README.md:
- Status: P2 完了 ✅（EdgeCFG SSOT確立）
- Add P2 completion record with test results
- Add EdgeCFG SSOT definition (Jump/Branch: terminator SSOT, Return: metadata exception)
- Document unified API (read/write separation)
- Note Option B' trade-off (Return metadata exception)

Update 10-Now.md:
- Add Phase 260 P2 completion entry (2025-12-21)
- Test results: 1368 lib tests, 45/46 smoke, phase258 tail call
- Verification: 0 jump_args references (comments excluded)
- 9 files modified

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 09:39:39 +09:00
tomoaki
901ce767ce refactor(verify): Phase 260 P2 - Remove dual-source edge-args validation 
- Delete legacy jump_args consistency checks (62 lines from cfg.rs)
- Metadata no longer exists, so dual-source validation is obsolete
- Rely on existing SSA validation for PHI correctness

Simplifies verification now that jump_args metadata is deleted
and terminator operands are the sole source of truth.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 09:39:26 +09:00
tomoaki
45a7e24f7d feat(mir): Phase 260 P2 - Delete BasicBlock.jump_args, unify to terminator SSOT 
- Delete legacy jump_args/jump_args_layout fields from BasicBlock
- Add return_env/return_env_layout for Return-specific metadata
- Rename set_return_edge_args() → set_return_env() (clearer semantics)
- Remove 8 legacy helper methods (has/get/set/clear legacy_jump_args)
- Simplify set_jump/branch_with_edge_args (remove legacy sync, keep API)
- Update edge_args_from_terminator() to terminator-only (no fallback)
- Update 10+ JoinIR handler/test sites to use new API

This completes Phase 260 P0 → P2 migration: edge-args are now
exclusively in terminator operands (Jump/Branch) or Return-specific
metadata (renamed from legacy terminology).

BREAKING: BasicBlock.jump_args field removed. Use terminator edge-args
or block.return_env() for Return blocks.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-21 09:39:20 +09:00
tomoaki
c0334f8b7e refactor(mir): phase260 p0.2 hide legacy edge-args reads behind BasicBlock API 
- Add block.return_env() getter for Return env metadata
- Update instruction_rewriter.rs to use block.return_env()
- Update exit_collection.rs to use block.return_env()
- Prepare for Phase 260 P2 (jump_args deletion)

This consolidates all legacy edge-args reads through BasicBlock API,
enabling clean deletion of jump_args field in P2.
 2025-12-21 09:01:35 +09:00
tomoaki
2f2596db37 refactor(mir): phase261 p0.1 unify return edge-args writes 2025-12-21 08:40:34 +09:00
tomoaki
7c9f453fc6 refactor(mir): phase261 p0 enforce edge-args writer ssot (verify + sync) 2025-12-21 08:32:04 +09:00
tomoaki
89c5fc2654 docs: Phase 260 P0.3 完了記録 + 既知FAIL SSOT更新 
**10-Now.md 更新**:
- Phase 260 P0.2/P0.3 完了記録追加（15モジュール、約3941行、53単体テスト）
- Current First FAIL を "P0.3完了後" に更新
- 既知FAILに "Phase 260 scope外" を明記
- 期待/実際の詳細追加
- 次アクション: 機能側Phase（Pattern2 LoopBodyLocal promotion）へ

**phase-260/README.md 更新**:
- Status: P0.3 完了 ✅
- P0.2/P0.3 進捗セクション追加（commit履歴、成果）
- モジュール分割の責務一覧（Utilities 7 + Handlers 8）
- SSOT維持確認項目（jump_args直参照ゼロ、out_edges()/edge_args_to() SSOT維持、PHI preservation、Phase metadata保持）

Phase 260 完全達成: CFG基盤整備完了、今後は機能側Phaseへ

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-21 08:18:29 +09:00
tomoaki
2c01a7335a refactor(joinir): Phase 260 P0.3 Phase 2 - extract 5 complex handlers 
Extracts all remaining complex handlers from joinir_block_converter.rs:

**handlers/call.rs** (308 lines):
- handle_call() - Call + tail call processing
- Phase 131 P2: Stable function name ValueId (module-global SSOT)
- Phase 131 P2: Legacy jump-args metadata for tail calls
- Phase 256 P1.8: Function name resolution
- 5 comprehensive unit tests

**handlers/jump.rs** (566 lines):
- handle_jump() - Jump to continuation (conditional/unconditional)
- get_continuation_name() helper (Phase 256 P1.9)
- Stable ValueId allocation (JUMP_FUNC_NAME_ID_BASE = 91000)
- Phase 246-EX: Legacy jump-args metadata
- 5 comprehensive unit tests

**handlers/conditional_method_call.rs** (413 lines):
- handle_conditional_method_call() - If/Phi expansion (single variable)
- 3-block pattern: cond → then (BoxCall) / else (Copy) → merge (PHI)
- Uses block_allocator + terminator_builder
- 4 comprehensive unit tests

**handlers/if_merge.rs** (454 lines):
- handle_if_merge() - If/Phi with multiple variables
- Handles parallel merges (e.g., sum + count in fold operations)
- Uses merge_variable_handler for copy emission
- 4 comprehensive unit tests

**handlers/nested_if_merge.rs** (557 lines):
- handle_nested_if_merge() - Multi-level nested branches (MOST COMPLEX)
- Dynamic N+3 block allocation (N levels + then + final_else + merge)
- Cascading AND logic for N conditions
- 4 comprehensive unit tests

All handlers:
- Use extracted utilities (block_allocator, call_generator, merge_variable_handler, terminator_builder, block_finalizer)
- Accept finalize_fn as parameter (enables testing)
- Fully tested (22 unit tests total, all passing)
- Ready for integration into converter

Pattern reduction: ~581 lines of complex control flow → 5 focused modules

Phase 2 complete - all handlers extracted and tested.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-21 08:08:25 +09:00
tomoaki
e7f9adcfed refactor(joinir): Phase 260 P0.3 Phase 1 - extract terminator_builder + block_finalizer 
Extracts shared utilities from joinir_block_converter.rs to prepare for
handler extraction (Phase 2):

**terminator_builder.rs** (207 lines):
- create_branch_terminator() - Branch with empty edge_args
- emit_branch_and_finalize() - Branch + block finalization
- create_jump_terminator() - Jump with empty edge_args
- create_return_terminator() - Return terminator
- Eliminates 4x Branch terminator duplication

**block_finalizer.rs** (246 lines):
- finalize_block() - Add instructions + terminator (PHI-preserving)
- finalize_remaining_instructions() - Flush pending instructions
- Phase 189 FIX: Critical PHI preservation logic
- PHI instructions remain at block start for SSA correctness

Pattern reduction: ~90 lines duplicated 4x → 2 utility modules

All utilities fully tested with comprehensive unit tests.
Phase 1 complete - utilities ready for Phase 2 handler extraction.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-21 07:40:05 +09:00
tomoaki
666de9d3ec refactor(joinir): Phase 260 P0.2 - extract select handler 
Adds select handler to the handlers/ module:

**handlers/select.rs** (118 lines):
- handle_select() - Select instruction (Phase 256 P1.5)
- Direct instruction emission (no branch/PHI expansion)
- Debug logging support
- Comprehensive unit tests

Pattern: Simple instruction wrapper, no control flow complexity

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-21 07:27:18 +09:00
tomoaki
875bfee1ba refactor(joinir): Phase 260 P0.2 - extract call_generator + 4 simple handlers 
Extracts repeated patterns from joinir_block_converter.rs:

**call_generator.rs** (195 lines):
- emit_call_pair() - Const + Call instruction pair generation
- emit_call_pair_with_spans() - With span tracking
- Eliminates 3x duplication of call generation pattern

**handlers/** module (4 simple handlers, 389 lines total):
- ret.rs - Return instruction handling
- method_call.rs - MethodCall → BoxCall conversion
- field_access.rs - FieldAccess → BoxCall (getter pattern)
- new_box.rs - NewBox instruction handling

All handlers fully tested with comprehensive unit tests.

Pattern reduction: ~60 lines duplicated 3x → single utility modules

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-21 07:22:14 +09:00