feat(mir): Phase 25.1f完了 - Conservative PHI + ControlForm観測レイヤー
🎉 Conservative PHI Box理論による完全SSA構築 **Phase 7-B: Conservative PHI実装** - 片方branchのみ定義変数に対応(emit_void使用) - 全変数にPHI生成(Conservative Box理論) - Stage-1 resolver全テスト緑化(3/3 PASS) **Phase 25.1f: ControlForm観測レイヤー** - LoopShape/IfShape/ControlForm構造定義 - Loop/If統一インターフェース実装 - debug_dump/debug_validate機能追加 - NYASH_CONTROL_FORM_TRACE環境変数対応 **主な変更**: - src/mir/builder/phi.rs: Conservative PHI実装 - src/mir/control_form.rs: ControlForm構造(NEW) - src/mir/loop_builder.rs: LoopForm v2デフォルト化 **テスト結果**: ✅ mir_stage1_using_resolver_min_fragment_verifies ✅ mir_stage1_using_resolver_full_collect_entries_verifies ✅ mir_parserbox_parse_program2_harness_parses_minimal_source 🤖 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com> Co-Authored-By: ChatGPT <chatgpt@openai.com>
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@ -510,11 +510,11 @@ impl MirBuilder {
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let mut instruction = instruction;
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// Precompute debug metadata to avoid borrow conflicts later
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let dbg_fn_name = self
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let _dbg_fn_name = self
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.current_function
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.as_ref()
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.map(|f| f.signature.name.clone());
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let dbg_region_id = self.debug_current_region_id();
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let _dbg_region_id = self.debug_current_region_id();
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// P0: PHI の軽量補強と観測は、関数ブロック取得前に実施して借用競合を避ける
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if let MirInstruction::Phi { dst, inputs } = &instruction {
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origin::phi::propagate_phi_meta(self, *dst, inputs);
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