Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/TableSwitch.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/TableSwitch.java@9ec15d6914ca |
children | 4a36a0bd6d18 |
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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.ir; |
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24 |
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25 import static com.sun.c1x.debug.InstructionPrinter.InstructionLineColumn.*; |
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26 |
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27 import java.util.*; |
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28 |
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29 import com.sun.c1x.debug.*; |
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30 import com.sun.c1x.value.*; |
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31 |
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32 /** |
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33 * The {@code TableSwitch} instruction represents a table switch. |
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34 * |
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35 * @author Ben L. Titzer |
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36 */ |
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37 public final class TableSwitch extends Switch { |
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38 |
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39 final int lowKey; |
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40 |
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41 /** |
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42 * Constructs a new TableSwitch instruction. |
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43 * @param value the instruction producing the value being switched on |
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44 * @param successors the list of successors |
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45 * @param lowKey the lowest integer key in the table |
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46 * @param stateBefore the state before the switch |
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47 * @param isSafepoint {@code true} if this instruction is a safepoint |
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48 */ |
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49 public TableSwitch(Value value, List<BlockBegin> successors, int lowKey, FrameState stateBefore, boolean isSafepoint) { |
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50 super(value, successors, stateBefore, isSafepoint); |
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51 this.lowKey = lowKey; |
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52 } |
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53 |
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54 /** |
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55 * Gets the lowest key in the table switch (inclusive). |
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56 * @return the low key |
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57 */ |
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58 public int lowKey() { |
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59 return lowKey; |
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60 } |
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61 |
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62 /** |
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63 * Gets the highest key in the table switch (exclusive). |
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64 * @return the high key |
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65 */ |
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66 public int highKey() { |
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67 return lowKey + numberOfCases(); |
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68 } |
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69 |
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70 @Override |
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71 public void accept(ValueVisitor v) { |
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72 v.visitTableSwitch(this); |
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73 } |
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74 |
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75 @Override |
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76 public void print(LogStream out) { |
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77 out.print("tableswitch "); |
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78 if (isSafepoint()) { |
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79 out.print("(safepoint) "); |
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80 } |
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81 out.println(value()); |
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82 int l = numberOfCases(); |
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83 for (int i = 0; i < l; i++) { |
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84 INSTRUCTION.advance(out); |
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85 out.printf("case %5d: B%d%n", lowKey() + i, successors().get(i).blockID); |
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86 } |
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87 INSTRUCTION.advance(out); |
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88 out.print("default : B").print(defaultSuccessor().blockID); |
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89 } |
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90 } |