001/*
002 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003 *
004 *  This file is licensed to You under the Eclipse Public License (EPL);
005 *  You may not use this file except in compliance with the License. You
006 *  may obtain a copy of the License at
007 *
008 *      http://www.opensource.org/licenses/eclipse-1.0.php
009 *
010 *  See the COPYRIGHT.txt file distributed with this work for information
011 *  regarding copyright ownership.
012 */
013package org.jikesrvm.compilers.opt.ir.operand.ia32;
014
015import org.jikesrvm.compilers.opt.ir.operand.Operand;
016
017/**
018 * An FPR register that BURS is managing.
019 * Created by a fld, and then eventually
020 * deallocated with some popping alu/store.
021 */
022public final class BURSManagedFPROperand extends Operand {
023  public int regNum;
024
025  public BURSManagedFPROperand(int r) {
026    regNum = r;
027  }
028
029  @Override
030  public Operand copy() {
031    return new BURSManagedFPROperand(regNum);
032  }
033
034  @Override
035  public boolean similar(Operand op) {
036    return (op instanceof BURSManagedFPROperand) && ((BURSManagedFPROperand) op).regNum == regNum;
037  }
038
039  // Returns the string representation of this operand.
040  @Override
041  public String toString() {
042    return "ST(" + regNum + ")";
043  }
044
045}