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annotate graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/TargetDescription.java @ 21556:48c1ebd24120

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renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Wed, 27 May 2015 00:36:16 +0200
parents graal/com.oracle.graal.api.code/src/com/oracle/graal/api/code/TargetDescription.java@bd74da0a76f3
children
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1 /*
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2 * Copyright (c) 2009, 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.jvmci.code;
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24
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25 import com.oracle.jvmci.meta.Kind;
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26 import com.oracle.jvmci.meta.PlatformKind;
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27 import com.oracle.jvmci.meta.LIRKind;
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28 import static com.oracle.jvmci.meta.MetaUtil.*;
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29
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30 /**
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31 * Represents the target machine for a compiler, including the CPU architecture, the size of
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32 * pointers and references, alignment of stacks, caches, etc.
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33 */
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34 public abstract class TargetDescription {
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35
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36 public final Architecture arch;
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37
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38 /**
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39 * Specifies if this is a multi-processor system.
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40 */
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41 public final boolean isMP;
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42
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43 /**
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44 * Specifies if this target supports encoding objects inline in the machine code.
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45 */
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46 public final boolean inlineObjects;
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47
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48 /**
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49 * The machine word size on this target.
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50 */
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51 public final int wordSize;
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52
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53 /**
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54 * The kind to be used for representing raw pointers and CPU registers.
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55 */
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56 public final Kind wordKind;
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57
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58 /**
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59 * The stack alignment requirement of the platform. For example, from Appendix D of <a
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60 * href="http://www.intel.com/Assets/PDF/manual/248966.pdf">Intel 64 and IA-32 Architectures
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61 * Optimization Reference Manual</a>:
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62 *
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63 * <pre>
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64 * "It is important to ensure that the stack frame is aligned to a
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65 * 16-byte boundary upon function entry to keep local __m128 data,
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66 * parameters, and XMM register spill locations aligned throughout
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67 * a function invocation."
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68 * </pre>
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69 */
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70 public final int stackAlignment;
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71
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72 /**
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73 * Maximum constant displacement at which a memory access can no longer be an implicit null
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74 * check.
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75 */
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76 public final int implicitNullCheckLimit;
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77
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78 public TargetDescription(Architecture arch, boolean isMP, int stackAlignment, int implicitNullCheckLimit, boolean inlineObjects) {
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79 this.arch = arch;
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80 this.isMP = isMP;
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81 this.wordSize = arch.getWordSize();
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82 this.wordKind = Kind.fromWordSize(wordSize);
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83 this.stackAlignment = stackAlignment;
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84 this.implicitNullCheckLimit = implicitNullCheckLimit;
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85 this.inlineObjects = inlineObjects;
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86 }
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87
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88 @Override
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89 public final int hashCode() {
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90 throw new UnsupportedOperationException();
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91 }
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92
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93 @Override
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94 public final boolean equals(Object obj) {
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95 if (this == obj) {
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96 return true;
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97 }
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98 if (obj instanceof TargetDescription) {
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99 TargetDescription that = (TargetDescription) obj;
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100 // @formatter:off
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101 if (this.implicitNullCheckLimit == that.implicitNullCheckLimit &&
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102 this.inlineObjects == that.inlineObjects &&
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103 this.isMP == that.isMP &&
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104 this.stackAlignment == that.stackAlignment &&
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105 this.wordKind.equals(that.wordKind) &&
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106 this.wordSize == that.wordSize &&
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107 this.arch.equals(that.arch)) {
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108 return true;
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109 }
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110 // @formatter:on
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111 }
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112 return false;
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113 }
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114
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115 @Override
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116 public String toString() {
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117 return identityHashCodeString(this);
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118 }
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119
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120 public int getSizeInBytes(PlatformKind kind) {
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121 return arch.getSizeInBytes(kind);
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122 }
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123
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124 public LIRKind getLIRKind(Kind javaKind) {
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125 switch (javaKind) {
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126 case Boolean:
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127 case Byte:
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128 case Short:
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129 case Char:
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130 case Int:
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131 case Long:
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132 case Float:
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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133 case Double:
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Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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134 return LIRKind.value(javaKind);
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Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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135 case Object:
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Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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136 return LIRKind.reference(javaKind);
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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137 default:
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Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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138 return LIRKind.Illegal;
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Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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139 }
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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140 }
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 14562
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141
14562
45812e05cdb3 Move narrow oop handling in reference maps to hotspot specific code.
Roland Schatz <roland.schatz@oracle.com>
parents: 14559
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142 public abstract ReferenceMap createReferenceMap(boolean hasRegisters, int stackSlotCount);
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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143 }