/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.compilers.opt.ir.operand;
import org.jikesrvm.compilers.opt.ir.BasicBlock;
/**
* Represents a basic block (used in LABEL and BBEND instructions)
*
* @see Operand
*/
public final class BasicBlockOperand extends Operand {
/**
* The basic block
*/
public BasicBlock block;
/**
* Construct a new basic block operand with the given block.
*
* @param b the basic block
*/
public BasicBlockOperand(BasicBlock b) {
block = b;
}
/**
* Return a new operand that is semantically equivalent to <code>this</code>.
*
* @return a copy of <code>this</code>
*/
public Operand copy() {
return new BasicBlockOperand(block);
}
/**
* Are two operands semantically equivalent?
*
* @param op other operand
* @return <code>true</code> if <code>this</code> and <code>op</code>
* are semantically equivalent or <code>false</code>
* if they are not.
*/
public boolean similar(Operand op) {
return (op instanceof BasicBlockOperand) && (block == ((BasicBlockOperand) op).block);
}
/**
* Returns the string representation of this operand.
*
* @return a string representation of this operand.
*/
public String toString() {
return block.toString();
}
}