constant.h

// This file if part of the llir-opt project.
// Licensing information can be found in the LICENSE file.
// (C) 2018 Nandor Licker. All rights reserved.
 
#pragma once
 
#include <llvm/ADT/APFloat.h>
#include <llvm/ADT/APInt.h>
 
#include "core/value.h"
#include "core/register.h"
 
using APInt = llvm::APInt;
using APFloat = llvm::APFloat;
 
 
 
class Constant : public Value {
public:
  static constexpr Value::Kind kValueKind = Value::Kind::CONST;
 
public:
  enum Kind {
    INT,
    FLOAT
  };
 
  Constant(Kind kind) : Value(Value::Kind::CONST), kind_(kind) {}
 
  virtual ~Constant();
 
  Kind GetKind() const { return kind_; }
 
  bool Is(Kind kind) const { return GetKind() == kind; }
 
private:
  Kind kind_;
};
 
 
class ConstantInt final : public Constant {
public:
  static constexpr Constant::Kind kConstKind = Constant::Kind::INT;
 
public:
  ConstantInt(int64_t v);
  ConstantInt(const APInt &v) : Constant(Constant::Kind::INT), v_(v) {}
 
  APInt GetValue() const { return v_; }
  int64_t GetInt() const { return v_.getSExtValue(); }
 
private:
  APInt v_;
};
 
 
class ConstantFloat final : public Constant {
public:
  static constexpr Constant::Kind kConstKind = Constant::Kind::FLOAT;
 
public:
  ConstantFloat(double d) : Constant(Constant::Kind::FLOAT), v_(APFloat(d)) {}
  ConstantFloat(const APFloat &v) : Constant(Constant::Kind::FLOAT), v_(v) {}
 
  APFloat GetValue() const { return v_; }
  double GetDouble() const;
 
private:
  APFloat v_;
};