nyash-codex 000335c32e feat(hako_check): Phase 154 MIR CFG integration & HC020 dead block detection ...

Implements block-level unreachable code detection using MIR CFG information.
Complements Phase 153's method-level HC019 with fine-grained analysis.

Core Infrastructure (Complete):
- CFG Extractor: Extract block reachability from MirModule
- DeadBlockAnalyzerBox: HC020 rule for unreachable blocks
- CLI Integration: --dead-blocks flag and rule execution
- Test Cases: 4 comprehensive patterns (early return, constant false, infinite loop, break)
- Smoke Test: Validation script for all test cases

Implementation Details:
- src/mir/cfg_extractor.rs: New module for CFG→JSON extraction
- tools/hako_check/rules/rule_dead_blocks.hako: HC020 analyzer box
- tools/hako_check/cli.hako: Added --dead-blocks flag and HC020 integration
- apps/tests/hako_check/test_dead_blocks_*.hako: 4 test cases

Architecture:
- Follows Phase 153 boxed modular pattern (DeadCodeAnalyzerBox)
- Optional CFG field in Analysis IR (backward compatible)
- Uses MIR's built-in reachability computation
- Gracefully skips if CFG unavailable

Known Limitation:
- CFG data bridge pending (Phase 155): analysis_consumer.hako needs MIR access
- Current: DeadBlockAnalyzerBox implemented, but CFG not yet in Analysis IR
- Estimated 2-3 hours to complete bridge in Phase 155

Test Coverage:
- Unit tests: cfg_extractor (simple CFG, unreachable blocks)
- Integration tests: 4 test cases ready (will activate with bridge)
- Smoke test: tools/hako_check_deadblocks_smoke.sh

Documentation:
- phase154_mir_cfg_inventory.md: CFG structure investigation
- phase154_implementation_summary.md: Complete implementation guide
- hako_check_design.md: HC020 rule documentation

Next Phase 155:
- Implement CFG data bridge (extract_mir_cfg builtin)
- Update analysis_consumer.hako to call bridge
- Activate HC020 end-to-end testing

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

Co-Authored-By: Claude <noreply@anthropic.com>

2025-12-04 15:00:45 +09:00

..

phase-85-ring0-runtime

feat(ring0): Phase 102 MemApi Bridge Skeleton - StdMem実装

2025-12-03 13:42:05 +09:00

00-Overview.md

docs: add MIR13 mode doc and set PHI-off as default; bridge lowering split (if/loop/try); llvmlite resolver stabilization; curated runner default PHI-off; refresh CURRENT_TASK.md

2025-09-17 10:58:12 +09:00

10-Now.md

docs: add MIR13 mode doc and set PHI-off as default; bridge lowering split (if/loop/try); llvmlite resolver stabilization; curated runner default PHI-off; refresh CURRENT_TASK.md

2025-09-17 10:58:12 +09:00

20-Decisions.md

docs: add MIR13 mode doc and set PHI-off as default; bridge lowering split (if/loop/try); llvmlite resolver stabilization; curated runner default PHI-off; refresh CURRENT_TASK.md

2025-09-17 10:58:12 +09:00

30-Backlog.md

docs(phase130): JoinIR→LLVM ベースライン確立

2025-12-04 10:52:10 +09:00

consolebox_complete_guide.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

core_boxes_design.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

core_optional_design.md

feat(runtime): Phase 103 CoreServices Optional化 - Memory Constraints対応

2025-12-03 13:59:06 +09:00

factory_priority.md

feat(box_factory): Phase 86 BoxFactory Priority normalization

2025-12-02 21:52:18 +09:00

hako_check_design.md

feat(hako_check): Phase 154 MIR CFG integration & HC020 dead block detection

2025-12-04 15:00:45 +09:00

hako_logging_design.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

logger_box_design.md

docs(phase 105): Logger Box Framework設計＆ドキュメント整備

2025-12-03 14:33:04 +09:00

logging_policy.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase33-10-implementation-recommendation.md

feat(joinir): Phase 34-6 MethodCall 構造と本物の substring 意味論

2025-11-27 17:05:46 +09:00

phase33-10-local-pattern-mir-analysis.md

feat(joinir): Phase 34-6 MethodCall 構造と本物の substring 意味論

2025-11-27 17:05:46 +09:00

phase61-5-3-if-phi-priority-table.md

docs: Phase 61-5 If PHI 棚卸し完了

2025-11-29 15:57:14 +09:00

phase61-5-summary.md

docs: Phase 61-5 If PHI 棚卸し完了

2025-11-29 15:57:14 +09:00

phase61-5.4-next-phase-candidates.md

docs: Phase 61-5 If PHI 棚卸し完了

2025-11-29 15:57:14 +09:00

phase69-1-trio-inventory.md

feat(joinir): Phase 66-68 GenericTypeResolver + JoinIR First Chapter Wrap

2025-11-30 08:54:18 +09:00

phase69-4-trio-deletion-plan.md

docs(phi_core): Phase 70 完全達成！Trio 完全削除 (~1,443行)

2025-12-02 09:45:54 +09:00

phase69-4.3-trio-to-loopscope-migration.md

docs(phi_core): Phase 69-4 完全達成！Trio 削除準備完了

2025-11-30 10:10:45 +09:00

phase71-findings-20251202.md

docs(phase71): Phase 71 初回観測完了 - SSA/selfhost 根本原因特定

2025-12-02 10:19:07 +09:00

phase71-ssa-trim-fix-20251202.md

feat(phase71-ssa): SSA undef 完全解消達成！(4件→0件)

2025-12-02 11:16:01 +09:00

phase72-73-env-inventory.md

feat(env): Phase 71-73 - SSA fix + Stage-3 ENV consolidation

2025-12-02 12:36:28 +09:00

phase84-2-case-d-investigation.md

feat(mir): Phase 84-2 CopyTypePropagator for Copy chain type propagation

2025-12-02 19:37:01 +09:00

phase84-2-failure-patterns.md

feat(mir): Phase 84-2 CopyTypePropagator for Copy chain type propagation

2025-12-02 19:37:01 +09:00

phase84-2-summary.md

feat(mir): Phase 84-2 CopyTypePropagator for Copy chain type propagation

2025-12-02 19:37:01 +09:00

phase84-2-test-list.md

feat(mir): Phase 84-2 CopyTypePropagator for Copy chain type propagation

2025-12-02 19:37:01 +09:00

phase84-3-final-report.md

docs(phase84): Add Phase 84-3 analysis and Phase 84-4 recommendations

2025-12-02 20:18:13 +09:00

phase84-3-remaining-4-analysis.md

docs(phase84): Add Phase 84-3 analysis and Phase 84-4 recommendations

2025-12-02 20:18:13 +09:00

phase84-3-summary.md

docs(phase84): Add Phase 84-3 analysis and Phase 84-4 recommendations

2025-12-02 20:18:13 +09:00

phase84-4-completion-report.md

docs: Phase 84-4 完了報告書 - Case D 100%完全解決達成

2025-12-02 20:30:22 +09:00

phase84-4-implementation-recommendation.md

docs(phase84): Add Phase 84-3 analysis and Phase 84-4 recommendations

2025-12-02 20:18:13 +09:00

phase84-case-d-detailed-analysis.md

feat(mir): Phase 84-2 CopyTypePropagator for Copy chain type propagation

2025-12-02 19:37:01 +09:00

phase84-case-d-index.md

feat(mir): Phase 84-2 CopyTypePropagator for Copy chain type propagation

2025-12-02 19:37:01 +09:00

phase84-case-d-summary.md

feat(joinir): Phase 84-5 if_phi.rs レガシーフォールバック完全削除

2025-12-02 21:09:15 +09:00

phase84-index.md

feat(joinir): Phase 84-5 if_phi.rs レガシーフォールバック完全削除

2025-12-02 21:09:15 +09:00

phase106_filebox_design_revised.md

feat(Ring0): Phase 107 - Ring0.FsApi FileIo integration complete

2025-12-03 18:16:49 +09:00

phase107_fsapi_fileio_bridge.md

feat(phase109): RuntimeProfile設計で FileBox を条件付き optional に

2025-12-03 19:37:32 +09:00

phase108_filebox_write_semantics.md

feat(phase109): RuntimeProfile設計で FileBox を条件付き optional に

2025-12-03 19:37:32 +09:00

phase109_runtime_profiles.md

docs: Phase 109 RuntimeProfile設計指示書追加（修正1-3統合版）

2025-12-03 19:22:55 +09:00

phase110_filehandlebox_design.md

docs: Phase 106-111 完了反映（Ring0/FileBox I/O パイプライン）

2025-12-03 21:32:14 +09:00

phase111_filehandlebox_append_metadata.md

docs: Phase 111 FileHandleBox append+metadata設計指示書（修正案統合版）

2025-12-03 21:12:37 +09:00

phase112_ring0_registry_design.md

docs: Phase 112 Ring0 Service Registry設計指示書（修正案統合版）

2025-12-03 22:03:16 +09:00

phase113_filehandlebox_public_api.md

feat(phase113): FileHandleBox Nyash 公開 API 完成

2025-12-04 03:35:25 +09:00

phase114_fileio_trait_extension.md

feat(phase114): FileIo trait 拡張 & メタデータ統一完成

2025-12-04 03:58:02 +09:00

phase120_baseline_results.md

feat(selfhost): Phase 120 selfhost Stage-3 baseline establishment

2025-12-04 04:30:30 +09:00

phase120_selfhost_stable_paths.md

feat(selfhost): Phase 120 selfhost Stage-3 baseline establishment

2025-12-04 04:30:30 +09:00

phase121_hako_check_investigation.md

docs(joinir): Phase 121 hako_check JoinIR integration design

2025-12-04 04:42:32 +09:00

phase121_hako_check_joinir_design.md

docs(phase124): Update hako_check design to reflect JoinIR-only architecture

2025-12-04 06:26:59 +09:00

phase121_integration_roadmap.md

docs(joinir): Phase 121 hako_check JoinIR integration design

2025-12-04 04:42:32 +09:00

phase121_legacy_path_analysis.md

docs(joinir): Phase 121 hako_check JoinIR integration design

2025-12-04 04:42:32 +09:00

phase122_5_nyash_toml_fix.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase122_consolebox_println_unification.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase123_consolebox_code_unification.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase123_hako_check_joinir_implementation.md

Phase 123 proper完了：hako_check JoinIR実装（環境変数選択可能化）

2025-12-04 06:17:10 +09:00

phase124_hako_check_joinir_finalization.md

docs: Phase 124 指示書作成（hako_check レガシー削除&JoinIR専用化）

2025-12-04 06:24:03 +09:00

phase124_vm_method_dispatch_unification.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase125_delete_deprecated_console_box.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase126_documentation_consolidation.md

Phase 122.5-126完了：ConsoleBox 品質改善・最適化・統合

2025-12-04 06:02:03 +09:00

phase130_joinir_llvm_baseline.md

feat(phase131): LLVM backend re-enable & PHI ordering bug discovery

2025-12-04 11:04:29 +09:00

phase131_joinir_llvm_fixes.md

docs(phase131): JoinIR → LLVM 個別修正ライン（指示書作成）

2025-12-04 10:57:13 +09:00

phase132_llvm_phi_ordering.md

feat(llvm): Phase 132 - Fix PHI instruction ordering bug

2025-12-04 11:28:55 +09:00

phase133_consolebox_llvm_integration.md

feat(llvm): Phase 133 ConsoleBox LLVM Integration & JoinIR Chapter 3 Complete

2025-12-04 11:44:55 +09:00

phase134_mir_call_unification.md

feat(llvm): Phase 134-A - mir_call.py unified 設計完成

2025-12-04 12:06:34 +09:00

phase134b_stringbox_bridge.md

feat(llvm_py): Phase 134-B StringBox bridge separation

2025-12-04 12:22:55 +09:00

phase150_selfhost_stage3_depth1_baseline.md

docs(phase150): Selfhost Stage-3 Depth-1 ベースライン強化（指示書作成）

2025-12-04 12:27:44 +09:00

phase150_selfhost_stage3_depth1_results.md

feat(selfhost): Phase 151 - ConsoleBox Selfhost Support

2025-12-04 13:07:12 +09:00

phase151_consolebox_selfhost_support.md

feat(selfhost): Phase 151 - ConsoleBox Selfhost Support

2025-12-04 13:07:12 +09:00

phase152a_assignment_expr_design.md

docs: Phase 152-A completion update in CURRENT_TASK.md and design doc

2025-12-04 13:33:44 +09:00

phase152b_static_method_cleanup.md

chore(phase152-b): Static method 宣言整理（箱化モジュール化）

2025-12-04 13:54:45 +09:00

phase153_hako_check_deadcode.md

docs(phase153): hako_check / dead code 検出モードの復活（指示書作成）

2025-12-04 14:10:51 +09:00

phase153_hako_check_inventory.md

feat(hako_check): Phase 153 - Dead code detection revival (JoinIR version)

2025-12-04 14:19:48 +09:00

phase154_implementation_summary.md

feat(hako_check): Phase 154 MIR CFG integration & HC020 dead block detection

2025-12-04 15:00:45 +09:00

phase154_mir_cfg_deadblocks.md

feat(hako_check): Phase 154 MIR CFG integration & HC020 dead block detection

2025-12-04 15:00:45 +09:00

phase154_mir_cfg_inventory.md

feat(hako_check): Phase 154 MIR CFG integration & HC020 dead block detection

2025-12-04 15:00:45 +09:00

phase-21.7-naming-ssot-checklist.md

chore: Phase 26-H セッション完了 - 全ドキュメント更新

2025-11-23 05:53:27 +09:00

ring0-inventory.md

feat(phase114): FileIo trait 拡張 & メタデータ統一完成

2025-12-04 03:58:02 +09:00

selfhost_stage3_expected_flow.md

feat(selfhost): Phase 150 - Selfhost Stage-3 Depth-1 baseline strengthening

2025-12-04 12:40:01 +09:00

stage1_cli_ssa_valueid34_analysis.md

docs(stage1): Phase 25.1 - Stage-1 CLI ValueId(34) SSA バグ完全調査完了

2025-11-21 07:00:05 +09:00

stage1_mir_builder_type_confusion_bug.md

debug(stage1): Phase 25.1 - MIR Builder 型混乱バグ完全特定

2025-11-21 08:03:03 +09:00

stage1_mir_log_investigation.md

debug(stage1): Phase 25.1 - MIR Builder 型混乱バグ完全特定

2025-11-21 08:03:03 +09:00

valueid-fix-implementation-guide.md

feat(phi): Step 5-5-H完了 - Phantom block検証＋PHI決定性向上

2025-11-20 17:10:03 +09:00

valueid-fix-implementation-summary.md

feat(phi): Step 5-5-H完了 - Phantom block検証＋PHI決定性向上

2025-11-20 17:10:03 +09:00

valueid-nondeterminism-root-cause-analysis.md

feat(phi): Step 5-5-H完了 - Phantom block検証＋PHI決定性向上

2025-11-20 17:10:03 +09:00