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annotate graal/Compiler/src/com/sun/c1x/lir/LIROp0.java @ 2507:9ec15d6914ca

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Pull over of compiler from maxine repository.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:43:22 +0200
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2507
9ec15d6914ca Pull over of compiler from maxine repository.
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1 /*
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2 * Copyright (c) 2009, 2010, 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.sun.cri.ci.*;
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26
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27 /**
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28 * The {@code LIROp0} class definition.
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29 *
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30 * @author Marcelo Cintra
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31 *
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32 */
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33 public class LIROp0 extends LIRInstruction {
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34
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35 /**
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36 * Creates a LIROp0 instruction.
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37 *
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38 * @param opcode the opcode of the new instruction
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39 */
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40 public LIROp0(LIROpcode opcode) {
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41 this(opcode, CiValue.IllegalValue);
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42 }
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43
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44 /**
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45 * Creates a LIROp0 instruction.
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46 *
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47 * @param opcode the opcode of the new instruction
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48 * @param result the result operand to the new instruction
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49 */
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50 public LIROp0(LIROpcode opcode, CiValue result) {
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51 this(opcode, result, null);
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52 }
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53
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54 /**
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55 * Creates a LIROp0 instruction.
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56 *
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57 * @param opcode the opcode of the new instruction
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58 * @param result the result operand to the new instruction
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59 * @param info used to emit debug information associated to this instruction
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60 */
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61 public LIROp0(LIROpcode opcode, CiValue result, LIRDebugInfo info) {
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62 super(opcode, result, info, false);
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63 assert isInRange(opcode, LIROpcode.BeginOp0, LIROpcode.EndOp0) : "Opcode " + opcode + " is invalid for a LIROP0 instruction";
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64 }
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65
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66 /**
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67 * Emit assembly code for this instruction.
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68 * @param masm the target assembler
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69 */
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70 @Override
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71 public void emitCode(LIRAssembler masm) {
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72 masm.emitOp0(this);
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73 }
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74 }