Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/Throw.java @ 2521:2f271a85d104
Removed intrinsic-related instructions
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 16:40:09 +0200 |
parents | 16b9a8b5ad39 |
children | 0c6564c254af |
rev | line source |
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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 com.sun.c1x.debug.*; |
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26 import com.sun.c1x.value.*; |
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27 import com.sun.cri.ci.*; |
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28 |
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29 /** |
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30 * The {@code Throw} instruction represents a throw of an exception. |
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31 * |
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32 * @author Ben L. Titzer |
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33 */ |
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34 public final class Throw extends BlockEnd { |
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35 |
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36 Value exception; |
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37 |
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38 FrameState stateBefore; |
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39 |
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40 /** |
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41 * Creates a new Throw instruction. |
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42 * @param exception the instruction that generates the exception to throw |
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43 * @param stateAfter the state before the exception is thrown but after the exception object has been popped |
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44 * @param isSafepoint {@code true} if this instruction is a safepoint instruction |
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45 */ |
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46 public Throw(Value exception, FrameState stateAfter, boolean isSafepoint) { |
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47 super(CiKind.Illegal, null, isSafepoint); |
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48 this.stateBefore = stateAfter; |
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49 this.exception = exception; |
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50 } |
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51 |
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52 /** |
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53 * Gets the instruction which produces the exception to throw. |
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54 * @return the instruction producing the exception |
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55 */ |
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56 public Value exception() { |
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57 return exception; |
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58 } |
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59 |
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60 /** |
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61 * Returns the state before this throw would occur. |
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62 * @return the state before the throw |
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63 */ |
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64 @Override |
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65 public FrameState stateBefore() { |
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66 return stateBefore; |
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67 } |
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68 |
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69 /** |
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70 * Checks whether this instruction can trap. |
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71 * @return {@code true} because this instruction definitely throws an exception! |
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72 */ |
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73 @Override |
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74 public boolean canTrap() { |
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75 return true; |
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76 } |
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77 |
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78 @Override |
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79 public void inputValuesDo(ValueClosure closure) { |
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80 exception = closure.apply(exception); |
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81 } |
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82 |
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83 @Override |
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84 public void accept(ValueVisitor v) { |
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85 v.visitThrow(this); |
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86 } |
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87 |
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88 @Override |
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89 public void print(LogStream out) { |
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90 out.print("throw ").print(exception()); |
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91 } |
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92 } |