docs: update Phase 257-259 SSOT (first FAIL is is_integer)

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2025-12-21 00:29:55 +09:00
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## Next (planned)
- Phase 259: `StringUtils.is_integer/1`nested-if + loopを JoinIR で受理して `--profile quick` を進める
- Phase 141 P2+: Call/MethodCall 対応effects + typing を分離して段階投入、ANF を前提に順序固定)
- Phase 143-loopvocab P3+: 条件スコープ拡張impure conditions 対応)
- 詳細: `docs/development/current/main/30-Backlog.md`
## 2025-12-20Phase 257 P1.1/P1.2/P1.3 完了 ✅
## Current First FAIL (SSOT)
- **P1.1**: Pattern6 SSOT fixfalse positive 根治
- `can_lower()``extract_scan_with_init_parts()` を呼び出して SSOT を確立
- `index_of_string/2` の誤検出が解消(`Ok(None)` で graceful fall-through
- **P1.2**: LoopHeaderPhi CFG correctionentry predecessor 自動計算)
- Step 0: `update_successors_from_terminator()` を手動実行instruction_rewriter が set_terminator() をバイパスするため)
- CFG から entry predecessors を計算header_preds - latch_block
- 複数 entry preds 対応bb0 host + bb10 JoinIR main
- host_entry_block を明示的に追加emit_jump が finalize() 後に実行されるため)
- **P1.3**: Smoke script validation既存実装確認
- `phase254_p0_index_of_vm.sh``--verify` + VM error detection で false positive 回避
- `json_lint_vm / StringUtils.is_integer/1`Phase 259
**検証結果**
-`phase254_p0_index_of_min.hako` verify → PASS
-`phase257_p0_last_index_of_min.hako` verify → PASS
-`./tools/smokes/v2/run.sh --profile quick` → Pattern6 false positive なし(別の未サポートパターンで止まる)
## 2025-12-20Phase 258index_of_string/2 dynamic window scan
**技術的発見**
- JoinIR merge では host entry block (bb0) の Jump が Phase 6 で設定されるため、Phase 4.5 の finalize() 時点で CFG に現れない
- 解決策:`builder.current_block` を捕捉し、CFG 計算後に明示的に entry_preds へ追加
- Phase 258 README: `docs/development/current/main/phases/phase-258/README.md`
- Result: `index_of_string/2` を JoinIR で受理し、quick の first FAIL を `is_integer/1` へ進めた
## 2025-12-20Phase 257Pattern6 reverse scan + PHI/CFG stabilization
- Phase 257 README: `docs/development/current/main/phases/phase-257/README.md`
- Result: `last_index_of/2` を Pattern6reverse scanで受理し、PHI predecessor mismatch を fail-fast + 自動補正で根治
## 2025-12-19Phase 146/147 完了 ✅
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- Goal: `StringUtils.last_index_of/2` を JoinIR で受理し、`--profile quick` を緑に戻す
- Investigation最小再現/論点): `docs/development/current/main/investigations/phase-257-last-index-of-loop-shape.md`
- Status: Pattern6 reverse scan + PHI/CFG 安定化は完了(最初の FAIL は次へ移動)
- Current first FAIL: `json_lint_vm / StringUtils.is_integer/1`nested-if + loop pattern, unsupported
- Current first FAIL: `json_lint_vm / StringUtils.index_of_string/2`dynamic window scan, unsupported
## 2025-12-20Phase 258is_integer nested-if + loop🔜
- Phase 258 README: `docs/development/current/main/phases/phase-258/README.md`
- Status: `index_of_string/2` を対象dynamic window scan
## 2025-12-20Phase 259is_integer nested-if + loop🔜
- Phase 259 README: `docs/development/current/main/phases/phase-259/README.md`
## 2025-12-19Phase 254index_of loop pattern✅ 完了Blocked by Phase 255