Phase 61: structural if-sum+break lowering (dev-only)
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@ -138,8 +138,11 @@ pub struct OwnershipPlan {
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- **Phase 57**: OwnershipAnalyzer implementation (dev-only)
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- **Phase 58**: P2 plumbing (dev-only)
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- **Phase 59**: P3 plumbing (dev-only)
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- **Phase 60**: Cleanup dev heuristics
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- **Phase 61**: Canonical promotion decision
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- **Phase 60**: Single-hop relay threading for fixtures (dev-only)
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- **Phase 61**: P3 側の接続点を決めて段階接続(dev-only)
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- まずは fixtures ルート(Program(JSON v0))で、if-sum+break を別箱として構造的に接続する
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- 詳細: `docs/development/current/main/PHASE_61_SUMMARY.md`
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- MIR→JoinIR の本番ルート(`pattern3_with_if_phi.rs`)へ寄せるのは別フェーズで設計→接続
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## Module Boundary
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@ -244,6 +247,13 @@ loop {
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### Implementation Details
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**Input JSON Compatibility**:
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- テスト用の簡易スキーマ: top-level `functions` + stmt/expr の `kind` を解釈
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- Program(JSON v0): top-level `defs` + stmt/expr の `type` を解釈
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- `Local` は JSON v0 で「新規束縛」と「rebind/update」が混在し得るため、
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解析では「scope chain で既に定義済みなら write / 未定義なら define」として扱う(dev-only 前提)。
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- Note: `docs/private` は submodule のため、fixture JSON を参照する場合は submodule 側で追跡されていることを前提とする。
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**Body-Local Ownership Rule**:
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```rust
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// Example: local in if/block → enclosing loop owns it
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@ -267,5 +277,9 @@ loop {
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## Status
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- ✅ Phase 56: Design + interface skeleton completed
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- ✅ Phase 57: Analyzer implemented (dev-only, not connected to lowering yet)
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- ⏳ Phase 58+: Plumbing integration pending
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- ✅ Phase 57: Analyzer implemented (dev-only)
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- ✅ Phase 58-59: plan_to_lowering helpers (P2/P3) with Fail-Fast relay
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- ✅ Phase 60 (dev-only): single-hop relay threading for P2 fixtures
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- `plan_to_p2_inputs_with_relay` promotes relay_writes to carriers (relay_path.len()<=1 only)
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- Frontend Break(P2) lowering uses ownership-with-relay; legacy path preserved for comparison
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- P3 stays analysis-only; real threading is Phase 61+
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