LiveVariableAnalysis.h

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// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <memory>
#include <unordered_set>
 
#include "mini-llvm/mir/BasicBlock.h"
#include "mini-llvm/mir/Function.h"
#include "mini-llvm/mir/Instruction.h"
#include "mini-llvm/mir/Register.h"
#include "mini-llvm/opt/mir/FunctionAnalysis.h"
#include "mini-llvm/utils/Compiler.h"
 
namespace mini_llvm::mir {
 
class MINI_LLVM_EXPORT LiveVariableAnalysis final : public FunctionAnalysis {
public:
    LiveVariableAnalysis();
    ~LiveVariableAnalysis() override;
    void runOnFunction(const Function &F) override;
    std::unordered_set<Register *> liveIn(const BasicBlock &B) const;
    std::unordered_set<Register *> liveOut(const BasicBlock &B) const;
    std::unordered_set<Register *> liveIn(const Instruction &I) const;
    std::unordered_set<Register *> liveOut(const Instruction &I) const;
 
private:
    class Impl;
 
    std::unique_ptr<Impl> impl_;
};
 
} // namespace mini_llvm::mir