/*
* Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.c1x.lir;
import com.oracle.max.asm.*;
import com.sun.cri.ci.*;
import com.sun.cri.ci.CiValue.Formatter;
/**
* The {@code LIRLabel} class definition.
*/
public class LIRLabel extends LIROp0 {
private Label label;
/**
* Constructs a LIRLabel instruction.
* @param label the label
*/
public LIRLabel(Label label) {
super(LIROpcode.Label, CiValue.IllegalValue, null);
assert label != null;
this.label = label;
}
/**
* Gets the label associated to this instruction.
* @return the label
*/
public Label label() {
return label;
}
/**
* Emits target assembly code for this LIRLabel instruction.
* @param masm the LIRAssembler
*/
@Override
public void emitCode(LIRAssembler masm) {
masm.emitOpLabel(this);
}
/**
* Prints this instruction to a LogStream.
*/
@Override
public String operationString(Formatter operandFmt) {
return label.isBound() ? String.valueOf(label.position()) : "?";
}
}