Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.max.cri/src/com/sun/cri/ci/CiConstant.java @ 3733:e233f5660da4
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author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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children | bc8527f3071c |
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.cri.ci; |
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24 |
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25 /** |
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26 * Represents a constant (boxed) value, such as an integer, floating point number, or object reference, |
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27 * within the compiler and across the compiler/runtime interface. Exports a set of {@code CiConstant} |
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28 * instances that represent frequently used constant values, such as {@link #ZERO}. |
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29 */ |
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30 public final class CiConstant extends CiValue { |
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31 |
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32 private static final CiConstant[] INT_CONSTANT_CACHE = new CiConstant[100]; |
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33 static { |
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34 for (int i = 0; i < INT_CONSTANT_CACHE.length; ++i) { |
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35 INT_CONSTANT_CACHE[i] = new CiConstant(CiKind.Int, i); |
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36 } |
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37 } |
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38 |
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39 public static final CiConstant NULL_OBJECT = new CiConstant(CiKind.Object, null); |
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40 public static final CiConstant INT_MINUS_1 = new CiConstant(CiKind.Int, -1); |
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41 public static final CiConstant INT_0 = forInt(0); |
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42 public static final CiConstant INT_1 = forInt(1); |
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43 public static final CiConstant INT_2 = forInt(2); |
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44 public static final CiConstant INT_3 = forInt(3); |
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45 public static final CiConstant INT_4 = forInt(4); |
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46 public static final CiConstant INT_5 = forInt(5); |
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47 public static final CiConstant LONG_0 = new CiConstant(CiKind.Long, 0L); |
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48 public static final CiConstant LONG_1 = new CiConstant(CiKind.Long, 1L); |
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49 public static final CiConstant FLOAT_0 = new CiConstant(CiKind.Float, Float.floatToRawIntBits(0.0F)); |
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50 public static final CiConstant FLOAT_1 = new CiConstant(CiKind.Float, Float.floatToRawIntBits(1.0F)); |
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51 public static final CiConstant FLOAT_2 = new CiConstant(CiKind.Float, Float.floatToRawIntBits(2.0F)); |
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52 public static final CiConstant DOUBLE_0 = new CiConstant(CiKind.Double, Double.doubleToRawLongBits(0.0D)); |
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53 public static final CiConstant DOUBLE_1 = new CiConstant(CiKind.Double, Double.doubleToRawLongBits(1.0D)); |
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54 public static final CiConstant TRUE = new CiConstant(CiKind.Boolean, 1L); |
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55 public static final CiConstant FALSE = new CiConstant(CiKind.Boolean, 0L); |
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56 |
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57 static { |
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58 assert NULL_OBJECT.isDefaultValue(); |
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59 assert INT_0.isDefaultValue(); |
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60 assert FLOAT_0.isDefaultValue(); |
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61 assert DOUBLE_0.isDefaultValue(); |
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62 assert FALSE.isDefaultValue(); |
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63 |
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64 // Ensure difference between 0.0f and -0.0f is preserved |
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65 assert FLOAT_0 != forFloat(-0.0F); |
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66 assert !forFloat(-0.0F).isDefaultValue(); |
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67 |
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68 // Ensure difference between 0.0d and -0.0d is preserved |
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69 assert DOUBLE_0 != forDouble(-0.0d); |
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70 assert !forDouble(-0.0D).isDefaultValue(); |
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71 |
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72 assert NULL_OBJECT.isNull(); |
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73 } |
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74 |
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75 /** |
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76 * The boxed object value. This is ignored iff {@code !kind.isObject()}. |
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77 */ |
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78 private final Object object; |
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79 |
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80 /** |
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81 * The boxed primitive value as a {@code long}. This is ignored iff {@code kind.isObject()}. |
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82 * For {@code float} and {@code double} values, this value is the result of |
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83 * {@link Float#floatToRawIntBits(float)} and {@link Double#doubleToRawLongBits(double)} respectively. |
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84 */ |
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85 private final long primitive; |
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86 |
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87 /** |
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88 * Create a new constant represented by the specified object reference. |
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89 * |
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90 * @param kind the type of this constant |
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91 * @param object the value of this constant |
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92 */ |
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93 private CiConstant(CiKind kind, Object object) { |
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94 super(kind); |
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95 this.object = object; |
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96 this.primitive = 0L; |
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97 } |
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98 |
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99 /** |
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100 * Create a new constant represented by the specified primitive. |
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101 * |
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102 * @param kind the type of this constant |
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103 * @param primitive the value of this constant |
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104 */ |
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105 public CiConstant(CiKind kind, long primitive) { |
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106 super(kind); |
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107 this.object = null; |
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108 this.primitive = primitive; |
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109 } |
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110 |
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111 /** |
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112 * Checks whether this constant is non-null. |
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113 * @return {@code true} if this constant is a primitive, or an object constant that is not null |
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114 */ |
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115 public boolean isNonNull() { |
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116 return !kind.isObject() || object != null; |
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117 } |
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118 |
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119 /** |
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120 * Checks whether this constant is null. |
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121 * @return {@code true} if this constant is the null constant |
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122 */ |
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123 public boolean isNull() { |
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124 return kind.isObject() && object == null; |
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125 } |
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126 |
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127 @Override |
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128 public String name() { |
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129 return "const[" + kind.format(boxedValue()) + (kind != CiKind.Object ? "|0x" + Long.toHexString(primitive) : "") + "]"; |
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130 } |
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131 |
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132 /** |
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133 * Gets this constant's value as a string. |
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134 * |
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135 * @return this constant's value as a string |
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136 */ |
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137 public String valueString() { |
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138 if (kind.isPrimitive()) { |
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139 return boxedValue().toString(); |
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140 } else if (kind.isObject()) { |
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141 if (object == null) { |
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142 return "null"; |
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143 } else if (object instanceof String) { |
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144 return "\"" + object + "\""; |
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145 } else { |
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146 return "<object: " + kind.format(object) + ">"; |
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147 } |
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148 } else if (kind.isJsr()) { |
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149 return "bci:" + boxedValue().toString(); |
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150 } else { |
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151 return "???"; |
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152 } |
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153 } |
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154 |
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155 /** |
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156 * Returns the value of this constant as a boxed Java value. |
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157 * @return the value of this constant |
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158 */ |
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159 public Object boxedValue() { |
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160 return boxedValue(kind); |
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161 } |
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162 |
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163 /** |
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164 * Returns the value of this constant as a boxed Java value. |
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165 * |
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166 * @param kind the kind of the boxed value to be returned |
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167 * @return the value of this constant |
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168 */ |
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169 public Object boxedValue(CiKind kind) { |
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170 // Checkstyle: stop |
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171 switch (kind) { |
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172 case Byte: return (byte) asInt(); |
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173 case Boolean: return asInt() == 0 ? Boolean.FALSE : Boolean.TRUE; |
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174 case Short: return (short) asInt(); |
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175 case Char: return (char) asInt(); |
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176 case Jsr: return (int) primitive; |
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177 case Int: return asInt(); |
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178 case Long: return asLong(); |
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179 case Float: return asFloat(); |
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180 case Double: return asDouble(); |
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181 case Object: return object; |
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182 } |
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183 // Checkstyle: resume |
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184 throw new IllegalArgumentException(); |
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185 } |
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186 |
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187 private boolean valueEqual(CiConstant other, boolean ignoreKind) { |
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188 // must have equivalent kinds to be equal |
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189 if (!ignoreKind && kind != other.kind) { |
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190 return false; |
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191 } |
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192 if (kind.isObject()) { |
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193 return object == other.object; |
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194 } |
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195 return primitive == other.primitive; |
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196 } |
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197 |
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198 /** |
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199 * Converts this constant to a primitive int. |
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200 * @return the int value of this constant |
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201 */ |
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202 public int asInt() { |
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203 if (kind.stackKind().isInt() || kind.isJsr()) { |
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204 return (int) primitive; |
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205 } |
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206 throw new Error("Constant is not int: " + this); |
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207 } |
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208 |
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209 /** |
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210 * Converts this constant to a primitive boolean. |
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211 * @return the boolean value of this constant |
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|
212 */ |
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213 public boolean asBoolean() { |
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214 if (kind == CiKind.Boolean) { |
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215 return primitive != 0L; |
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216 } |
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217 throw new Error("Constant is not boolean: " + this); |
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218 } |
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219 |
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220 /** |
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221 * Converts this constant to a primitive long. |
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222 * @return the long value of this constant |
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|
223 */ |
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|
224 public long asLong() { |
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225 // Checkstyle: stop |
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|
226 switch (kind.stackKind()) { |
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|
227 case Jsr: |
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228 case Int: |
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229 case Long: return primitive; |
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230 case Float: return (long) asFloat(); |
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231 case Double: return (long) asDouble(); |
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232 default: throw new Error("Constant is not long: " + this); |
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|
233 } |
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|
234 // Checkstyle: resume |
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|
235 } |
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236 |
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237 /** |
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238 * Converts this constant to a primitive float. |
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|
239 * @return the float value of this constant |
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|
240 */ |
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|
241 public float asFloat() { |
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|
242 if (kind.isFloat()) { |
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243 return Float.intBitsToFloat((int) primitive); |
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|
244 } |
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245 throw new Error("Constant is not float: " + this); |
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|
246 } |
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|
247 |
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|
248 /** |
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249 * Converts this constant to a primitive double. |
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250 * @return the double value of this constant |
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251 */ |
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252 public double asDouble() { |
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253 if (kind.isFloat()) { |
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254 return Float.intBitsToFloat((int) primitive); |
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255 } |
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256 if (kind.isDouble()) { |
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257 return Double.longBitsToDouble(primitive); |
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258 } |
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259 throw new Error("Constant is not double: " + this); |
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260 } |
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261 |
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262 /** |
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263 * Converts this constant to the object reference it represents. |
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264 * @return the object which this constant represents |
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265 */ |
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266 public Object asObject() { |
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267 if (kind.isObject()) { |
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268 return object; |
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269 } |
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270 throw new Error("Constant is not object: " + this); |
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271 } |
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272 |
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273 /** |
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274 * Converts this constant to the jsr reference it represents. |
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275 * @return the object which this constant represents |
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276 */ |
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277 public int asJsr() { |
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278 if (kind.isJsr()) { |
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279 return (int) primitive; |
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280 } |
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281 throw new Error("Constant is not jsr: " + this); |
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282 } |
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283 |
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284 /** |
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285 * Unchecked access to a primitive value. |
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286 * @return |
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287 */ |
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288 public long asPrimitive() { |
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289 if (kind.isObject()) { |
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290 throw new Error("Constant is not primitive: " + this); |
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291 } |
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292 return primitive; |
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293 } |
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294 |
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295 /** |
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296 * Computes the hashcode of this constant. |
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297 * @return a suitable hashcode for this constant |
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298 */ |
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299 @Override |
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300 public int hashCode() { |
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301 if (kind.isObject()) { |
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302 return System.identityHashCode(object); |
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303 } |
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304 return (int) primitive; |
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305 } |
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306 |
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307 /** |
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308 * Checks whether this constant equals another object. This is only |
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309 * true if the other object is a constant and has the same value. |
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310 * @param o the object to compare equality |
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311 * @return {@code true} if this constant is equivalent to the specified object |
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312 */ |
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313 @Override |
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314 public boolean equals(Object o) { |
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315 return o == this || o instanceof CiConstant && valueEqual((CiConstant) o, false); |
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316 } |
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317 |
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318 @Override |
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319 public boolean equalsIgnoringKind(CiValue o) { |
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320 return o == this || o instanceof CiConstant && valueEqual((CiConstant) o, true); |
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321 } |
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322 |
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323 /** |
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324 * Checks whether this constant is identical to another constant or has the same value as it. |
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325 * @param other the constant to compare for equality against this constant |
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326 * @return {@code true} if this constant is equivalent to {@code other} |
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327 */ |
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328 public boolean equivalent(CiConstant other) { |
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329 return other == this || valueEqual(other, false); |
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330 } |
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331 |
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332 /** |
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333 * Checks whether this constant is the default value for its type. |
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334 * @return {@code true} if the value is the default value for its type; {@code false} otherwise |
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335 */ |
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336 public boolean isDefaultValue() { |
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337 // Checkstyle: stop |
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338 switch (kind.stackKind()) { |
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339 case Int: return asInt() == 0; |
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340 case Long: return asLong() == 0; |
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341 case Float: return this == FLOAT_0; |
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342 case Double: return this == DOUBLE_0; |
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343 case Object: return object == null; |
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344 } |
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345 // Checkstyle: resume |
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346 throw new IllegalArgumentException("Cannot det default CiConstant for kind " + kind); |
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347 } |
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348 |
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349 /** |
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350 * Gets the default value for a given kind. |
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351 * |
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352 * @return the default value for {@code kind}'s {@linkplain CiKind#stackKind() stack kind} |
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353 */ |
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354 public static CiConstant defaultValue(CiKind kind) { |
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355 // Checkstyle: stop |
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356 switch (kind.stackKind()) { |
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357 case Int: return INT_0; |
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358 case Long: return LONG_0; |
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359 case Float: return FLOAT_0; |
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360 case Double: return DOUBLE_0; |
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361 case Object: return NULL_OBJECT; |
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|
362 } |
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|
363 // Checkstyle: resume |
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|
364 throw new IllegalArgumentException("Cannot get default CiConstant for kind " + kind); |
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365 } |
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|
366 |
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|
367 /** |
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368 * Creates a boxed double constant. |
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369 * @param d the double value to box |
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370 * @return a boxed copy of {@code value} |
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371 */ |
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372 public static CiConstant forDouble(double d) { |
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373 if (Double.compare(0.0D, d) == 0) { |
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374 return DOUBLE_0; |
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|
375 } |
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376 if (Double.compare(d, 1.0D) == 0) { |
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377 return DOUBLE_1; |
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378 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
379 return new CiConstant(CiKind.Double, Double.doubleToRawLongBits(d)); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
380 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
381 |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
382 /** |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
383 * Creates a boxed float constant. |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
384 * @param f the float value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
385 * @return a boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
386 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
387 public static CiConstant forFloat(float f) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
388 if (Float.compare(f, 0.0F) == 0) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
389 return FLOAT_0; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
390 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
391 if (Float.compare(f, 1.0F) == 0) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
392 return FLOAT_1; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
393 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
394 if (Float.compare(f, 2.0F) == 0) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
395 return FLOAT_2; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
396 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
397 return new CiConstant(CiKind.Float, Float.floatToRawIntBits(f)); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
398 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
399 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
400 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
401 * Creates a boxed long constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
402 * @param i the long value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
403 * @return a boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
404 */ |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
405 public static CiConstant forLong(long i) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
406 return i == 0 ? LONG_0 : i == 1 ? LONG_1 : new CiConstant(CiKind.Long, i); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
407 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
408 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
409 /** |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
410 * Creates a boxed integer constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
411 * @param i the integer value to box |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
412 * @return a boxed copy of {@code value} |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
413 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
414 public static CiConstant forInt(int i) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
415 if (i == -1) { |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
416 return INT_MINUS_1; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
417 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
418 if (i >= 0 && i < INT_CONSTANT_CACHE.length) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
419 return INT_CONSTANT_CACHE[i]; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
420 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
421 return new CiConstant(CiKind.Int, i); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
422 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
423 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
424 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
425 * Creates a boxed byte constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
426 * @param i the byte value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
427 * @return a boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
428 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
429 public static CiConstant forByte(byte i) { |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
430 return new CiConstant(CiKind.Byte, i); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
431 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
432 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
433 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
434 * Creates a boxed boolean constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
435 * @param i the boolean value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
436 * @return a boxed copy of {@code value} |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
437 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
438 public static CiConstant forBoolean(boolean i) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
439 return i ? TRUE : FALSE; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
440 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
441 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
442 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
443 * Creates a boxed char constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
444 * @param i the char value to box |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
445 * @return a boxed copy of {@code value} |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
446 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
447 public static CiConstant forChar(char i) { |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
448 return new CiConstant(CiKind.Char, i); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
449 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
450 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
451 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
452 * Creates a boxed short constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
453 * @param i the short value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
454 * @return a boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
455 */ |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
456 public static CiConstant forShort(short i) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
457 return new CiConstant(CiKind.Short, i); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
458 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
459 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
460 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
461 * Creates a boxed address (jsr/ret address) constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
462 * @param i the address value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
463 * @return a boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
464 */ |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
465 public static CiConstant forJsr(int i) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
466 return new CiConstant(CiKind.Jsr, i); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
467 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
468 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
469 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
470 * Creates a boxed object constant. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
471 * @param o the object value to box |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
472 * @return a boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
473 */ |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
474 public static CiConstant forObject(Object o) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
475 if (o == null) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
476 return NULL_OBJECT; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
477 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
478 return new CiConstant(CiKind.Object, o); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
479 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
480 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
481 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
482 * Creates a boxed constant for the given kind from an Object. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
483 * The object needs to be of the Java boxed type corresponding to the kind. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
484 * @param kind the kind of the constant to create |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
485 * @param value the Java boxed value: a Byte instance for CiKind Byte, etc. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
486 * @return the boxed copy of {@code value} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
487 */ |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
488 public static CiConstant forBoxed(CiKind kind, Object value) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
489 switch (kind) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
490 case Byte: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
491 return forByte((Byte) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
492 case Char: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
493 return forChar((Character) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
494 case Short: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
495 return forShort((Short) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
496 case Int: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
497 return forInt((Integer) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
498 case Long: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
499 return forLong((Long) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
500 case Float: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
501 return forFloat((Float) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
502 case Double: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
503 return forDouble((Double) value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
504 case Object: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
505 return forObject(value); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
506 default: |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
507 throw new RuntimeException("cannot create CiConstant for boxed " + kind + " value"); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
508 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
509 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
510 } |