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refactor(mir): phase261 p0 enforce edge-args writer ssot (verify + sync)

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tomoaki
2025-12-21 08:32:04 +09:00
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docs/development/current/main/10-Now.md
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@ -16,6 +16,25 @@
- P2: `BasicBlock.jump_args` を削除（terminator operand を SSOT 化）
- P3: spans を `Vec<Spanned<_>>` に収束（段階導入）
## Phase 261 P0 チェックリスト（legacy-only 経路の棚卸し）
- `src/mir/basic_block.rs:119` — reason: legacy layout の初期値が None（空メタ）; expected: OK（legacy 未設定時の既定）
- `src/mir/basic_block.rs:239` — reason: out_edges が legacy fallback を持つ; expected: Jump/Branch で edge-args を書く経路を増やし、verify で legacy-only を検出
- `src/mir/basic_block.rs:254` — reason: legacy setter API; expected: writer 側は edge-args を併記する経路に統一
- `src/mir/basic_block.rs:281` — reason: legacy edge-args 生成 API; expected: read-side の移行完了後に削除（P2）
- `src/mir/basic_block.rs:337` — reason: legacy edge-args fallback; expected: verify で legacy-only を検出し、P2で撤去
- `src/mir/join_ir_vm_bridge/handlers/call.rs:193` — reason: tail-call Return の legacy 付与（exit wiring）; expected: edge-args SSOT 化のための設計判断が必要（Return には edge-args を持てない）
- `src/mir/join_ir_vm_bridge/handlers/jump.rs:213` — reason: cond jump の exit block Return に legacy 付与; expected: 同上（Return 経由のため）
- `src/mir/join_ir_vm_bridge/handlers/jump.rs:249` — reason: tail-call Return の legacy 付与; expected: 同上
- `src/mir/join_ir_vm_bridge/joinir_block_converter.rs:438` — reason: tail-call Return の legacy 付与; expected: 同上
- `src/mir/join_ir_vm_bridge/joinir_block_converter.rs:508` — reason: cond jump の exit block Return に legacy 付与; expected: 同上
- `src/mir/join_ir_vm_bridge/joinir_block_converter.rs:551` — reason: tail-call Return の legacy 付与; expected: 同上
- `src/mir/join_ir_vm_bridge/normalized_bridge/direct.rs:425` — reason: exit Return の legacy 付与; expected: 同上
- `src/mir/join_ir_vm_bridge/normalized_bridge/direct.rs:471` — reason: finalize_block の legacy 付与; expected: 同上
- `src/mir/builder/control_flow/joinir/merge/rewriter/exit_collection.rs:64` — reason: legacy edge-args を read; expected: edge-args SSOT 経路に寄せて置換（P1〜P2）
- `src/mir/builder/control_flow/joinir/merge/instruction_rewriter.rs:415` — reason: legacy edge-args read; expected: 同上
- `src/mir/builder/control_flow/joinir/merge/instruction_rewriter.rs:930` — reason: legacy edge-args read; expected: 同上
## Current First FAIL (SSOT)
- **After Phase 260 P0.3**: `core_direct_array_oob_set_rc_vm / Stage-B compile / JoinIR Pattern2 LoopBodyLocal(seg)`