Mercurial > hg > graal-jvmci-8
annotate graal/Compiler/src/com/sun/c1x/ir/UnsafeGetRaw.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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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.cri.ci.*; |
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27 |
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28 /** |
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29 * The {@code UnsafeGetRaw} instruction represents an unsafe access of raw memory where |
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30 * the type is not an object reference. |
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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 UnsafeGetRaw extends UnsafeRawOp { |
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35 |
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36 final boolean mayBeUnaligned; |
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37 |
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38 /** |
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39 * Constructs a new UnsafeGetRaw instruction. |
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40 * @param opKind the kind of the operation |
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41 * @param addr the instruction generating the base address |
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42 * @param mayBeUnaligned {@code true} if this operation may be unaligned |
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43 */ |
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44 public UnsafeGetRaw(CiKind opKind, Value addr, boolean mayBeUnaligned) { |
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45 super(opKind, addr, false); |
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46 this.mayBeUnaligned = mayBeUnaligned; |
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47 } |
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48 |
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49 /** |
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50 * Constructs a new UnsafeGetRaw instruction. |
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51 * @param opKind the kind of the operation |
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52 * @param addr the instruction generating the base address |
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53 * @param index the instruction generating the index |
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54 * @param log2scale the log base 2 of the scaling factor |
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55 * @param mayBeUnaligned {@code true} if this operation may be unaligned |
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56 */ |
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57 public UnsafeGetRaw(CiKind opKind, Value addr, Value index, int log2scale, boolean mayBeUnaligned) { |
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58 super(opKind, addr, index, log2scale, false); |
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59 this.mayBeUnaligned = mayBeUnaligned; |
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60 } |
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61 |
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62 /** |
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63 * Checks whether this operation may be unaligned. |
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64 * @return {@code true} if this operation may be unaligned |
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65 */ |
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66 public boolean mayBeUnaligned() { |
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67 return mayBeUnaligned; |
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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.visitUnsafeGetRaw(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("UnsafeGetRaw.(base ").print(base()); |
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78 if (hasIndex()) { |
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79 out.print(", index ").print(index()).print(", log2_scale ").print(log2Scale()); |
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80 } |
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81 out.print(')'); |
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82 } |
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83 } |