Files
hakorune/docs/development/current/main/30-Backlog.md
tomoaki 9336785680 feat(anf): Phase 146/147 - Loop/If Condition ANF with Compare support
## Phase 146 P0: ANF Routing SSOT Unified

**Goal**: Unify ANF routing in `lower_expr_with_scope()` L54-84, remove legacy lowering

**Changes**:
- expr_lowerer_box.rs: Added scope check (PureOnly → skip ANF, WithImpure → try ANF)
- post_if_post_k.rs: Removed legacy inline lowering (L271-285), added `lower_condition_legacy()` helper
- contract.rs: Already had `CondLoweringFailed` out-of-scope reason

**Test Results**:  Phase 146 P0 smoke (exit 7), 0 regressions

## Phase 146 P1: Compare Operator Support

**Goal**: Enable ANF for condition expressions with Compare operators

**Changes**:
- joinir_dev.rs: Added `anf_allow_pure_enabled()` (HAKO_ANF_ALLOW_PURE=1)
- expr_lowerer_box.rs: PureOnly scope ANF support (L56-66)
- execute_box.rs: Compare operator support (+122 lines)
  - `execute_compare_hoist()`, `execute_compare_recursive()`, `ast_compare_to_joinir()`
  - Extended `normalize_and_lower()` for Compare

**Test Results**:  Phase 146 P1 smoke (exit 7 with flags), 0 regressions

## Phase 147 P0: Recursive Comparison ANF

**Goal**: Extend recursive ANF to Compare operators

**Changes**:
- contract.rs: Added `AnfParentKind::Compare` variant
- plan_box.rs: Compare case in BinaryOp routing (L68-79, L134-139)
  - Distinguishes Compare vs arithmetic BinaryOp

**Benefits**: Enables recursive ANF for comparisons
- `s.length() == 3` → `t = s.length(); if (t == 3)` 
- `s1.length() < s2.length()` → `t1 = s1.length(); t2 = s2.length(); if (t1 < t2)` 

## Implementation Summary

**Files Modified** (9 files, +253 lines, -25 lines = +228 net):
1. src/config/env/joinir_dev.rs (+28 lines)
2. src/mir/control_tree/normalized_shadow/anf/contract.rs (+2 lines)
3. src/mir/control_tree/normalized_shadow/anf/execute_box.rs (+122 lines)
4. src/mir/control_tree/normalized_shadow/anf/plan_box.rs (+18 lines)
5. src/mir/control_tree/normalized_shadow/common/expr_lowerer_box.rs (+18 lines, -0 lines)
6. src/mir/control_tree/normalized_shadow/post_if_post_k.rs (+44 lines, -25 lines)
7. CURRENT_TASK.md
8. docs/development/current/main/10-Now.md
9. docs/development/current/main/30-Backlog.md

**Files Created** (7 files):
- apps/tests/phase146_p0_if_cond_unified_min.hako
- apps/tests/phase146_p1_if_cond_intrinsic_min.hako
- tools/smokes/.../phase146_p0_if_cond_unified_vm.sh
- tools/smokes/.../phase146_p0_if_cond_unified_llvm_exe.sh
- tools/smokes/.../phase146_p1_if_cond_intrinsic_vm.sh
- tools/smokes/.../phase146_p1_if_cond_intrinsic_llvm_exe.sh
- docs/development/current/main/phases/phase-146/README.md

**Acceptance Criteria**:  All met
- cargo build --release: PASS (0 errors, 0 warnings)
- Phase 145 regressions: PASS (exit 12, 18, 5)
- Phase 146 P0: PASS (exit 7)
- Phase 146 P1: PASS (exit 7 with HAKO_ANF_ALLOW_PURE=1)

**Architecture**:
- SSOT: ANF routing only in `lower_expr_with_scope()` L54-84
- Box-First: Phase 145 `anf/` module extended
- Legacy removed: post_if_post_k.rs unified with SSOT

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-19 17:03:56 +09:00

5.4 KiB
Raw Blame History

Self Current Task — Backlog (main)

Status: Active
Scope: 「次にやる候補」を短く列挙するメモ。現状は docs/development/current/main/10-Now.md を入口にする。
Related:

  • docs/development/current/main/10-Now.md
  • docs/development/current/main/DOCS_LAYOUT.md

直近JoinIR/selfhost

  • 収束方針SSOT案: Expr/Condition/Control の 3 箱分割

    • ExprLowererBox式SSOT: AST(expr)(prelude, value)ANF含む。pure/impure/whitelist/strict を集約入口SSOT
    • ConditionLowererBox条件→分岐SSOT: AST(cond)BranchPlan。評価順は ExprLowererBox に委譲し、&&/|| は制御語彙で扱う。
    • ControlLowererBox制御SSOT: StepNode/ControlTree → JoinIR継続 + envif/loop を担当し、条件は ConditionLowererBox に委譲。
  • Phase 141 P2+planned: Call/MethodCalleffects + typing を分離して段階投入)

    • ねらい: pure/impure 境界を壊さずに、impure lowering を段階投入する。
    • 前提DONE:
      • Phase 141 P1.5: known intrinsic allowlist + available_inputs 3-source merge + diagnostics
    • 受け入れ条件:
      • out-of-scope は Ok(None) でフォールバック(既定挙動不変)
      • effects の順序付けは SSOT で固定してから解禁by-name 増殖禁止)
  • Phase 144-anfplanned: impure 式導入の順序固定ANF

    • ねらい: x + f(y) 等の “pure + impure 混在” で評価順が仕様になる前に、ANF で順序固定を SSOT 化する
    • 入口: docs/development/current/main/phases/phase-144-anf/INSTRUCTIONS.md
    • 受け入れ条件:
      • impure を lowering できない場合は Ok(None) でフォールバック(既定挙動不変)
      • dev/strict では「順序固定の欠落」を Fail-Fast診断に順序ログを含める
  • Phase 143-loopvocab R0planned: Contract SSOT 抽出refactor P0 → modular components

    • 目的: loop_true_if_break_continue.rs を「検出/契約/変換」に分割し、P1/P2 での if分岐増殖を防ぐ
    • 実装:
      • 新ファイル: src/mir/control_tree/normalized_shadow/common/loop_if_exit_contract.rs
        • enum LoopIfExitThen { Break, Continue }
        • struct LoopIfExitShape { has_else: bool, then: LoopIfExitThen, else_: Option<LoopIfExitThen>, cond_scope: ExprLoweringScope }
        • enum OutOfScopeReason { NotLoopTrue, BodyNotSingleIf, ThenNotExit, ElseNotSupported, CondOutOfScope(...) }
      • Refactor: loop_true_if_break_continue.rs は「shape抽出 → lower」だけに縮退SSOT は contract側
      • Tests: unit test を dedicated module へ分離test maintainability
    • 受け入れ条件:
      • cargo check no errors
      • P1/P2 での if分岐を防ぐcontract で決定性を保証)
      • out-of-scope は Ok(None) で一貫(既定挙動不変)
  • Phase 143-loopvocab P1planned: continue 語彙追加

    • 対象: loop(true) { if(cond_pure) continue } を same lowering に通す
    • 実装:
      • LoopIfExitShape で LoopIfExitThen::Continue を許可
      • JoinModule: if true → loop_step (continue semantics)
      • Fixtures: phase143_loop_true_if_continue_min.hako
      • Smoke: VM + LLVM EXE
    • Out-of-scope は Ok(None) のまま

DONEPhase 143-loopvocab P2: else 対称化B-C / C-B

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

  • Phase 143-loopvocab P3+planned: impure conditions 対応

    • 目的: if(cond_impure) break/continue を ANF/順序固定の上で段階投入する
    • 方針: Phase 145-anf の契約hoist + left-to-rightを条件式にも適用
  • real-app loop regression の横展開VM + LLVM EXE

    • ねらい: 実コード由来ループを 1 本ずつ最小抽出して fixture/smoke で固定する(段階投入)。
    • 現状: Phase 107find_balanced_array/object / json_cur 由来)まで固定済み。
    • 次候補: JsonLoader/JsonCur から 1 本ずつfixture + integration smokeで増やす。
  • P5b “完全E2E”escape skip の実ループを end-to-end で固定)

    • 現状: Phase 94 で VM E2E まで固定済み。次は selfhost 実コード(apps/selfhost-vm/json_loader.hako)へ横展開して回帰を減らす。
    • 入口: docs/development/current/main/phases/phase-94/README.md
  • 制御の再帰合成docs-only → dev-only段階投入

    • ねらい: loop/if ネストの "構造" を SSOTControlTree/StepTreeで表せるようにする
    • 注意: canonicalizer は観測/構造SSOTまでValueId/PHI配線は Normalized 側へ)
    • 現状: Phase 119128if-only Normalized: reads/inputs/unknown-read/partial-assign keep/mergeまで完了
    • 完了: Phase 129-Cpost-if を post_k continuation で表現)
    • 入口: docs/development/current/main/design/control-tree.md

中期(ループ在庫の残り)

  • P5guard-bounded: 大型ループを “小粒度” に割ってから取り込む(分割 or 新契約)
  • P6nested loops: capability guard で Fail-Fast 維持しつつ、解禁時の契約を先に固定

ドキュメント運用

  • 重複が出たら「設計 SSOTdesign」に集約し、Phaseログphasesは “何をやったか/検証したか” に限定する
  • 調査ログinvestigationsは結論を SSOT に反映してから Historical 化する