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			39 lines
		
	
	
	
		
			904 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			39 lines
		
	
	
	
		
			904 B
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2023, Dan Klishch <danilklishch@gmail.com>
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|  *
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|  * SPDX-License-Identifier: BSD-2-Clause
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|  */
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| 
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| #pragma once
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| 
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| #include <AK/TypeCasts.h>
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| 
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| #include "Compiler/ControlFlowGraph.h"
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| #include "Compiler/GenericASTPass.h"
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| 
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| namespace JSSpecCompiler {
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| 
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| class CFGBuildingPass
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|     : public IntraproceduralCompilerPass
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|     , private RecursiveASTVisitor {
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| public:
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|     inline static constexpr StringView name = "cfg-building"sv;
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| 
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|     using IntraproceduralCompilerPass::IntraproceduralCompilerPass;
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| 
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| protected:
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|     void process_function() override;
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|     RecursionDecision on_entry(Tree tree) override;
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|     void on_leave(Tree tree) override;
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| 
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| private:
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|     BasicBlockRef create_empty_block();
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|     BasicBlockRef exchange_current_with_empty();
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|     void will_be_used_as_expression(Tree const& tree);
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| 
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|     ControlFlowGraph* m_cfg;
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|     BasicBlockRef m_current_block;
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|     Vector<bool> m_is_expression_stack;
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| };
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| 
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| }
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