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annotate graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/type/PrimitiveStamp.java @ 18482:b8a622c3e99f

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Move raw memory access operations to a separate interface.
author Roland Schatz <roland.schatz@oracle.com>
date Thu, 20 Nov 2014 17:00:19 +0100
parents a3a2359ac88e
children 48c1ebd24120
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1 /*
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2 * Copyright (c) 2014, 2014, 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.oracle.graal.compiler.common.type;
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24
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25 import com.oracle.graal.api.meta.*;
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26
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27 /**
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28 * Type describing primitive values.
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29 */
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30 public abstract class PrimitiveStamp extends ArithmeticStamp {
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31
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32 private final int bits;
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33
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34 protected PrimitiveStamp(int bits, ArithmeticOpTable ops) {
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35 super(ops);
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36 this.bits = bits;
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37 }
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38
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39 /**
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40 * The width in bits of the value described by this stamp.
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41 */
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42 public int getBits() {
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43 return bits;
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44 }
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45
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46 public static int getBits(Stamp stamp) {
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47 if (stamp instanceof PrimitiveStamp) {
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48 return ((PrimitiveStamp) stamp).getBits();
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49 } else {
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50 return 0;
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51 }
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52 }
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53
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54 @Override
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55 public Constant readConstant(MemoryAccessProvider provider, Constant base, long displacement) {
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56 return provider.readPrimitiveConstant(getStackKind(), base, displacement, getBits());
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57 }
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58
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59 @Override
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60 public int hashCode() {
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61 final int prime = 31;
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62 int result = super.hashCode();
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63 result = prime * result + bits;
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64 return result;
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65 }
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66
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67 @Override
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68 public boolean equals(Object obj) {
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69 if (this == obj) {
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70 return true;
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71 }
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72 if (!(obj instanceof PrimitiveStamp)) {
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73 return false;
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74 }
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75 PrimitiveStamp other = (PrimitiveStamp) obj;
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76 if (bits != other.bits) {
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77 return false;
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78 }
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79 return super.equals(obj);
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80 }
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81 }