Cmp.h

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// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <format>
#include <memory>
#include <string>
#include <unordered_set>
#include <utility>
 
#include "mini-llvm/mir/ImmediateOperand.h"
#include "mini-llvm/mir/Instruction.h"
#include "mini-llvm/mir/InstructionVisitor.h"
#include "mini-llvm/mir/MemoryOperand.h"
#include "mini-llvm/mir/Register.h"
#include "mini-llvm/mir/RegisterClass.h"
#include "mini-llvm/mir/RegisterOperand.h"
#include "mini-llvm/utils/Compiler.h"
#include "mini-llvm/utils/Memory.h"
 
namespace mini_llvm::mir {
 
class MINI_LLVM_EXPORT Cmp : public Instruction {
public:
    Cmp(int width, std::shared_ptr<Register> src1, std::shared_ptr<Register> src2)
        : width_(width),
          src1_(RegisterClass::kGPR, std::move(src1)),
          src2_(RegisterClass::kGPR, std::move(src2)) {}
 
    int width() const {
        return width_;
    }
 
    template <typename Self>
    auto &src1(this Self &&self) {
        return self.src1_;
    }
 
    template <typename Self>
    auto &src2(this Self &&self) {
        return self.src2_;
    }
 
    std::unordered_set<const RegisterOperand *> regOps() const override {
        return {&src1(), &src2()};
    }
 
    std::unordered_set<const RegisterOperand *> dsts() const override {
        return {};
    }
 
    std::unordered_set<const RegisterOperand *> srcs() const override {
        return {&src1(), &src2()};
    }
 
    std::unordered_set<const ImmediateOperand *> immOps() const override {
        return {};
    }
 
    std::unordered_set<const MemoryOperand *> memOps() const override {
        return {};
    }
 
    bool hasSideEffects() const override {
        return false;
    }
 
    std::string format() const override {
        return std::format("CMP i{} {}, {}", width() * 8, *src1(), *src2());
    }
 
    std::unique_ptr<Instruction> clone() const override {
        return std::make_unique<Cmp>(width(), share(*src1()), share(*src2()));
    }
 
    void accept(InstructionVisitor &visitor) override {
        visitor.visitCmp(*this);
    }
 
    void accept(InstructionVisitor &visitor) const override {
        visitor.visitCmp(*this);
    }
 
private:
    int width_;
    RegisterOperand src1_, src2_;
};
 
} // namespace mini_llvm::mir