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hakorune/CURRENT_TASK.md
tomoaki edc7355937 refactor(joinir): unify boundary join_inputs SSOT (pattern4/6/7) 
Apply Phase 256.8 SSOT fix to Pattern4/6/7:
- Use join_module.entry.params.clone() instead of hardcoded ValueIds
- Add fail-fast validation for params count mismatch
- Remove ValueId(0), ValueId(PARAM_MIN + k) patterns
- Clean up unused PARAM_MIN imports

This prevents entry_param_mismatch errors structurally and maintains
consistency with Pattern2/3.

Changes:
- pattern4_with_continue.rs: Lines 442-476 (SSOT extraction + validation)
- pattern6_scan_with_init.rs: Lines 447-471 (SSOT extraction + validation)
- pattern7_split_scan.rs: Lines 495-526 (SSOT extraction + validation)

All patterns now use the same SSOT principle:
1. Extract entry function (priority: join_module.entry → fallback "main")
2. Use params as SSOT: join_inputs = entry_func.params.clone()
3. Build host_inputs in expected order (pattern-specific)
4. Fail-fast validation: join_inputs.len() == host_inputs.len()

Verification:
- cargo build --release: ✅ PASS (no PARAM_MIN warnings)
- Quick profile: ✅ First FAIL still json_lint_vm (baseline maintained)
- Pattern6 smoke: ✅ PASS (index_of test)
- Pattern7 smoke: Pre-existing phi pred mismatch (not introduced by SSOT)

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-20 20:05:11 +09:00

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CURRENT_TASK (moved)

Status: SSOT
Scope: Repo root の旧リンク互換。現行の入口は docs/development/current/main/10-Now.md。

  • Now: docs/development/current/main/10-Now.md
  • Backlog: docs/development/current/main/30-Backlog.md

Handoff (current)

状況（SSOT）

  • 現行の入口: docs/development/current/main/10-Now.md
  • 次の候補: docs/development/current/main/30-Backlog.md
  • Design goal: docs/development/current/main/design/join-explicit-cfg-construction.md

直近の道筋（JoinIR / Normalized）

設計方針メモ（SSOT候補）

  • ExprLowererBox（式SSOT）

    • 役割: AST(expr) → (prelude: Vec<Inst>, value: ValueId)（ANF含む）
    • pure/impure/whitelist/strict の契約を集約（入口SSOT）

  • ConditionLowererBox（条件→分岐SSOT）

    • 役割: AST(cond) → BranchPlan（短絡なら分岐語彙で組む）
    • 評価順は ExprLowererBox に委譲（ANFで順序固定）
    • &&/|| は制御として扱い、式で無理しない

  • ControlLowererBox（制御SSOT）

    • 役割: StepNode/ControlTree → JoinIR（継続 + env）
    • if/loop はここ、条件の中身は ConditionLowererBox に委譲

  • Phase 139: if-only post_k の return lowering を ReturnValueLowererBox に統一（DONE）

    • docs/development/current/main/phases/phase-139/README.md

  • Phase 140: NormalizedExprLowererBox 初版（pure expression のみ）（DONE）

    • SSOT: docs/development/current/main/design/normalized-expr-lowering.md
    • docs/development/current/main/phases/phase-140/README.md

  • Phase 141 P0: impure 拡張点（contract）を SSOT 化（Call/MethodCall はまだ out-of-scope）（DONE）

    • docs/development/current/main/phases/phase-141/README.md

  • Phase 141 P1: “既知 intrinsic だけ” を許可して段階投入（DONE）

    • docs/development/current/main/phases/phase-141/README.md

  • Phase 141 P1.5: known intrinsic registry + available_inputs 3-source merge + diagnostics（DONE）

    • docs/development/current/main/phases/phase-141/README.md

  • Phase 142-loopstmt P0: 正規化単位を statement（loop 1個）へ寄せる（DONE）

    • docs/development/current/main/phases/phase-142-loopstmt/README.md

  • Phase 142-loopstmt P1: LLVM EXE smoke（同 fixture）を追加（DONE）

    • docs/development/current/main/phases/phase-142-loopstmt/README.md

  • Phase 141 P2+: Call/MethodCall（effects + typing）を分離して段階投入

    • Historical context: docs/development/current/main/investigations/joinir-generalization-study.md

  • Phase 143-loopvocab P0/P1: loop 内 if/break/continue の語彙追加（DONE）

    • docs/development/current/main/phases/phase-143-loopvocab/README.md

  • Phase 143-loopvocab P2: else 対称化（B-C / C-B）（DONE）

    • docs/development/current/main/phases/phase-143-loopvocab/README.md

  • Phase 145-anf P0/P1/P2: ANF（impure hoist + 再帰的線形化）（DONE）

    • docs/development/current/main/phases/phase-145-anf/README.md

  • Phase 146（in progress）: Loop/If 条件式へ ANF を横展開（順序固定と診断）

    • docs/development/current/main/phases/phase-146/README.md

Resolved (historical)

WSL EXDEV / cargo build failure (resolved)

  • 2025-12-18: Invalid cross-device link (os error 18) により cargo build が失敗する事象があったが、wsl --shutdown 再起動後に復旧。
  • 再発時のワークアラウンド: tools/build_llvm.sh は EXDEV を避けるため TMPDIR を target/... 配下へ寄せる。