Mercurial > hg > graal-jvmci-8
diff graal/Compiler/src/com/sun/c1x/lir/LIRLabel.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/Compiler/src/com/sun/c1x/lir/LIRLabel.java Wed Apr 27 11:43:22 2011 +0200 @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2009, 2010, 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 + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.sun.c1x.lir; + +import com.sun.c1x.asm.*; +import com.sun.cri.ci.*; + +/** + * The {@code LIRLabel} class definition. + * + * @author Marcelo Cintra + */ +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(OperandFormatter operandFmt) { + return label.isBound() ? String.valueOf(label.position()) : "?"; + } +}