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/* $Id$
*
* Add: addition (intermediate opcode)
*
* Copyright (C) 2008-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#ifndef __ADD_HPP_INCLUDED
#define __ADD_HPP_INCLUDED
#include "intermediate/operands/Register.hpp"
namespace intermediate {
//! add two operands and return a new operand as result.
/** This class will add both operands together and put the result in the
* target register.
* In case that left + right is a bigger value than dst can store, the
* result is undefined.
*
* Read operands: left, right
* Write operands: dst
*
* left operand: left operand for addition
* right operand: right operand for addition
* dst: destination operand, to which the result will get written to (any
* virtual register*)
*
* Operation : dst = left + right
*
* all operands must have the same type.
*
*/
class Add : public OpCode {
public:
//! c'tor
/** @param l left source operand
* @param r right source operand
* @param destination destination register.
*/
Add(
Operand *l,
Operand *r,
Register *destination
) : left(l), right(r), dst(destination) {
assert(l->type == r->type);
assert(l->type == destination->type);
}
//! Accept a Visitor.
/** All intermediate code nodes need to implement this method.
*
* @param v the Visitor that can visit this node.
*/
virtual void accept(Visitor& v) {
v.visit(*this);
}
//! left operand
Operand *left;
//! right operand
Operand *right;
//! destination
Register *dst;
protected:
virtual ~Add() {
util::MiscUtil::terminate(this->left);
util::MiscUtil::terminate(this->right);
util::MiscUtil::terminate(this->dst);
}
};
}; /* namespace intermediate */
#endif /* __ADD_HPP_INCLUDED */
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