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Unifies initialization and conversion logic across all 4 loop patterns, eliminating code duplication and establishing single source of truth. ## Changes ### Infrastructure (New) - CommonPatternInitializer (117 lines): Unified loop var extraction + CarrierInfo building - JoinIRConversionPipeline (127 lines): Unified JoinIR→MIR→Merge flow ### Pattern Refactoring - Pattern 1: Uses CommonPatternInitializer + JoinIRConversionPipeline (-25 lines) - Pattern 2: Uses CommonPatternInitializer + JoinIRConversionPipeline (-25 lines) - Pattern 3: Uses CommonPatternInitializer + JoinIRConversionPipeline (-25 lines) - Pattern 4: Uses CommonPatternInitializer + JoinIRConversionPipeline (-40 lines) ### Code Reduction - Total reduction: ~115 lines across all patterns - Zero code duplication in initialization/conversion - Pattern files: 806 lines total (down from ~920) ### Quality Improvements - Single source of truth for initialization - Consistent conversion flow across all patterns - Guaranteed boundary.loop_var_name setting (prevents SSA-undef bugs) - Improved maintainability and testability ### Testing - All 4 patterns tested and passing: - Pattern 1 (Simple While): ✅ - Pattern 2 (With Break): ✅ - Pattern 3 (If-Else PHI): ✅ - Pattern 4 (With Continue): ✅ ### Documentation - Phase 33-22 inventory and results document - Updated joinir-architecture-overview.md with new infrastructure ## Breaking Changes None - pure refactoring with no API changes 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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Self Current Task — Overview (main)
目的
- main ブランチで Core‑13（MIR13）前提の制御フローを整備し、LLVM/Cranelift(EXE)/VM に綺麗に降ろす土台を完成させる。
- 箱言語の既存命令セット（Branch/Jump/Phi 他）を活かし、continue/break を新命令なしで表現する。
前提と指針
- MIR13 前提（純化モードを含む）。
- ループは canonical 形（preheader → header → body → latch → header、exit は単一）。
- continue/break は分岐のみで表現（continue→ヘッダ/ラッチ、break→単一 exit）。
- Verifier（支配関係/SSA）緑を最優先。post‑terminated 後の emit 禁止、合流点を明確化。
スコープ外
- 新規 MIR 命令の追加。
- try/finally と continue/break の相互作用（次段）。
JoinIR / Selfhost 関連の入口
- JoinIR 全体のアーキテクチャと箱の関係は
docs/development/current/main/joinir-architecture-overview.mdを参照してね。 - selfhost / .hako 側から JoinIR を使うときも、この設計を SSOT として運用する方針だよ。