Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/lir/LIRLabel.java @ 2822:530366123e46
Invoke is a block end
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Fri, 27 May 2011 15:41:10 +0200 |
parents | 0ea5f12e873a |
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1 /* |
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2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.c1x.lir; |
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24 |
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25 import com.oracle.max.asm.*; |
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26 import com.sun.cri.ci.*; |
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27 |
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28 /** |
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29 * The {@code LIRLabel} class definition. |
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30 * |
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31 * @author Marcelo Cintra |
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32 */ |
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33 public class LIRLabel extends LIROp0 { |
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34 |
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35 private Label label; |
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36 |
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37 /** |
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38 * Constructs a LIRLabel instruction. |
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39 * @param label the label |
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40 */ |
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41 public LIRLabel(Label label) { |
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42 super(LIROpcode.Label, CiValue.IllegalValue, null); |
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43 assert label != null; |
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44 this.label = label; |
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45 } |
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46 |
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47 /** |
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48 * Gets the label associated to this instruction. |
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49 * @return the label |
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50 */ |
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51 public Label label() { |
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52 return label; |
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53 } |
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54 |
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55 /** |
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56 * Emits target assembly code for this LIRLabel instruction. |
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57 * @param masm the LIRAssembler |
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58 */ |
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59 @Override |
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60 public void emitCode(LIRAssembler masm) { |
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61 masm.emitOpLabel(this); |
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62 } |
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63 |
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64 /** |
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65 * Prints this instruction to a LogStream. |
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66 */ |
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67 @Override |
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68 public String operationString(OperandFormatter operandFmt) { |
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69 return label.isBound() ? String.valueOf(label.position()) : "?"; |
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70 } |
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71 } |