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2 Commits

Author SHA1 Message Date
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
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