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annotate jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/JavaConstant.java @ 24234:ea6f94ab283b default tip

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Added tag jvmci-0.36 for changeset 8128b98d4736
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Mon, 18 Sep 2017 18:49:45 +0200
parents 1d4ce2d19e52
children
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1 /*
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2 * Copyright (c) 2009, 2015, 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 jdk.vm.ci.meta;
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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
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27 * reference, within the compiler and across the compiler/runtime interface. Exports a set of
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28 * {@code JavaConstant} instances that represent frequently used constant values, such as
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29 * {@link #NULL_POINTER}.
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30 */
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31 public interface JavaConstant extends Constant, JavaValue {
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32 /*
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33 * Using a larger cache for integers leads to only a slight increase in cache hit ratio which is
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34 * not enough to justify the impact on startup time.
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35 */
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36 JavaConstant NULL_POINTER = new NullConstant();
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37 PrimitiveConstant INT_MINUS_1 = new PrimitiveConstant(JavaKind.Int, -1);
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38 PrimitiveConstant INT_0 = new PrimitiveConstant(JavaKind.Int, 0);
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39 PrimitiveConstant INT_1 = new PrimitiveConstant(JavaKind.Int, 1);
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40 PrimitiveConstant INT_2 = new PrimitiveConstant(JavaKind.Int, 2);
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41 PrimitiveConstant LONG_0 = new PrimitiveConstant(JavaKind.Long, 0L);
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42 PrimitiveConstant LONG_1 = new PrimitiveConstant(JavaKind.Long, 1L);
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43 PrimitiveConstant FLOAT_0 = new PrimitiveConstant(JavaKind.Float, Float.floatToRawIntBits(0.0F));
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44 PrimitiveConstant FLOAT_1 = new PrimitiveConstant(JavaKind.Float, Float.floatToRawIntBits(1.0F));
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45 PrimitiveConstant DOUBLE_0 = new PrimitiveConstant(JavaKind.Double, Double.doubleToRawLongBits(0.0D));
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46 PrimitiveConstant DOUBLE_1 = new PrimitiveConstant(JavaKind.Double, Double.doubleToRawLongBits(1.0D));
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47 PrimitiveConstant TRUE = new PrimitiveConstant(JavaKind.Boolean, 1L);
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48 PrimitiveConstant FALSE = new PrimitiveConstant(JavaKind.Boolean, 0L);
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49
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50 /**
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51 * Returns the Java kind of this constant.
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52 */
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53 JavaKind getJavaKind();
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54
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55 /**
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56 * Checks whether this constant is null.
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57 *
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58 * @return {@code true} if this constant is the null constant
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59 */
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60 boolean isNull();
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61
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62 static boolean isNull(Constant c) {
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63 if (c instanceof JavaConstant) {
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64 return ((JavaConstant) c).isNull();
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65 } else {
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66 return false;
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67 }
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68 }
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69
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70 /**
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71 * Checks whether this constant is non-null.
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72 *
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73 * @return {@code true} if this constant is a primitive, or an object constant that is not null
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74 */
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75 default boolean isNonNull() {
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76 return !isNull();
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77 }
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78
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79 /**
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80 * Checks whether this constant is the default value for its kind (null, 0, 0.0, false).
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81 *
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82 * @return {@code true} if this constant is the default value for its kind
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83 */
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84 boolean isDefaultForKind();
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85
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86 /**
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87 * Returns the value of this constant as a boxed Java value.
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88 *
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89 * @return the value of this constant
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90 */
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91 Object asBoxedPrimitive();
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92
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93 /**
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94 * Returns the primitive int value this constant represents. The constant must have a
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95 * {@link JavaKind#getStackKind()} of {@link JavaKind#Int}.
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96 *
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97 * @return the constant value
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98 */
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99 int asInt();
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100
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101 /**
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102 * Returns the primitive boolean value this constant represents. The constant must have kind
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103 * {@link JavaKind#Boolean}.
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104 *
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105 * @return the constant value
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106 */
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107 boolean asBoolean();
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108
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109 /**
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110 * Returns the primitive long value this constant represents. The constant must have kind
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111 * {@link JavaKind#Long}, a {@link JavaKind#getStackKind()} of {@link JavaKind#Int}.
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112 *
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113 * @return the constant value
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114 */
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115 long asLong();
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116
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117 /**
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118 * Returns the primitive float value this constant represents. The constant must have kind
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119 * {@link JavaKind#Float}.
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120 *
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121 * @return the constant value
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122 */
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123 float asFloat();
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124
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125 /**
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126 * Returns the primitive double value this constant represents. The constant must have kind
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127 * {@link JavaKind#Double}.
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128 *
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129 * @return the constant value
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130 */
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0093dcea7092 converted JavaConstant to an interface
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parents: 18319
diff changeset
131 double asDouble();
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db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
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diff changeset
132
18320
0093dcea7092 converted JavaConstant to an interface
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diff changeset
133 default String toValueString() {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
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diff changeset
134 if (getJavaKind() == JavaKind.Illegal) {
15183
b862cf4381ef don't throw exception for Constant.toValueString with Kind.Illegal
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15018
diff changeset
135 return "illegal";
b862cf4381ef don't throw exception for Constant.toValueString with Kind.Illegal
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15018
diff changeset
136 } else {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
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diff changeset
137 return getJavaKind().format(asBoxedPrimitive());
15183
b862cf4381ef don't throw exception for Constant.toValueString with Kind.Illegal
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15018
diff changeset
138 }
13576
4e679d50ba9a Move data section building code to Java.
Roland Schatz <roland.schatz@oracle.com>
parents: 13140
diff changeset
139 }
4e679d50ba9a Move data section building code to Java.
Roland Schatz <roland.schatz@oracle.com>
parents: 13140
diff changeset
140
18329
75e72d395820 fixed toString() for JavaConstants
Doug Simon <doug.simon@oracle.com>
parents: 18320
diff changeset
141 static String toString(JavaConstant constant) {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
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diff changeset
142 if (constant.getJavaKind() == JavaKind.Illegal) {
18329
75e72d395820 fixed toString() for JavaConstants
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parents: 18320
diff changeset
143 return "illegal";
75e72d395820 fixed toString() for JavaConstants
Doug Simon <doug.simon@oracle.com>
parents: 18320
diff changeset
144 } else {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
145 return constant.getJavaKind().getJavaName() + "[" + constant.toValueString() + "]";
18329
75e72d395820 fixed toString() for JavaConstants
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parents: 18320
diff changeset
146 }
75e72d395820 fixed toString() for JavaConstants
Doug Simon <doug.simon@oracle.com>
parents: 18320
diff changeset
147 }
18186
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18163
diff changeset
148
3733
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diff changeset
149 /**
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parents:
diff changeset
150 * Creates a boxed double constant.
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
151 *
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diff changeset
152 * @param d the double value to box
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parents:
diff changeset
153 * @return a boxed copy of {@code value}
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
154 */
18320
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Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
155 static PrimitiveConstant forDouble(double d) {
3733
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parents:
diff changeset
156 if (Double.compare(0.0D, d) == 0) {
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parents:
diff changeset
157 return DOUBLE_0;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
158 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
159 if (Double.compare(d, 1.0D) == 0) {
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
160 return DOUBLE_1;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
161 }
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
162 return new PrimitiveConstant(JavaKind.Double, Double.doubleToRawLongBits(d));
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parents:
diff changeset
163 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
164
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
165 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
166 * Creates a boxed float constant.
15018
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
167 *
3733
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parents:
diff changeset
168 * @param f the float value to box
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
169 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
170 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
171 static PrimitiveConstant forFloat(float f) {
3733
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parents:
diff changeset
172 if (Float.compare(f, 0.0F) == 0) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
173 return FLOAT_0;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
174 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
175 if (Float.compare(f, 1.0F) == 0) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
176 return FLOAT_1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
177 }
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
178 return new PrimitiveConstant(JavaKind.Float, Float.floatToRawIntBits(f));
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
179 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
180
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
181 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
182 * Creates a boxed long constant.
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
183 *
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
184 * @param i the long value to box
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
185 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
186 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
187 static PrimitiveConstant forLong(long i) {
16036
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
188 if (i == 0) {
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
189 return LONG_0;
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
190 } else if (i == 1) {
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
191 return LONG_1;
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
192 } else {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
193 return new PrimitiveConstant(JavaKind.Long, i);
16036
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
194 }
3733
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parents:
diff changeset
195 }
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
196
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
197 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
198 * Creates a boxed integer constant.
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
199 *
3733
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parents:
diff changeset
200 * @param i the integer value to box
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
201 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
202 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
203 static PrimitiveConstant forInt(int i) {
16036
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
204 switch (i) {
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
205 case -1:
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
206 return INT_MINUS_1;
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
207 case 0:
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
208 return INT_0;
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
209 case 1:
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
210 return INT_1;
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
211 case 2:
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
212 return INT_2;
4161a58e48cb refactor/simplify Constant
Lukas Stadler <lukas.stadler@oracle.com>
parents: 15909
diff changeset
213 default:
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
214 return new PrimitiveConstant(JavaKind.Int, i);
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
215 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
216 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
217
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
218 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
219 * Creates a boxed byte constant.
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
220 *
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
221 * @param i the byte value to box
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
222 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
223 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
224 static PrimitiveConstant forByte(byte i) {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
225 return new PrimitiveConstant(JavaKind.Byte, i);
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
226 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
227
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
228 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
229 * Creates a boxed boolean constant.
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
230 *
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
231 * @param i the boolean value to box
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
232 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
233 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
234 static PrimitiveConstant forBoolean(boolean i) {
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
235 return i ? TRUE : FALSE;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
236 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
237
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
238 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
239 * Creates a boxed char constant.
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
240 *
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
241 * @param i the char value to box
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
242 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
243 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
244 static PrimitiveConstant forChar(char i) {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
245 return new PrimitiveConstant(JavaKind.Char, i);
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
246 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
247
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
248 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
249 * Creates a boxed short constant.
15018
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents: 14563
diff changeset
250 *
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
251 * @param i the short value to box
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
252 * @return a boxed copy of {@code value}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
253 */
18320
0093dcea7092 converted JavaConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
254 static PrimitiveConstant forShort(short i) {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
255 return new PrimitiveConstant(JavaKind.Short, i);
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
256 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
257
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
258 /**
18187
9619ba4daf4c Rename Constant to JavaConstant.
Roland Schatz <roland.schatz@oracle.com>
parents: 18186
diff changeset
259 * Creates a {@link JavaConstant} from a primitive integer of a certain kind.
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
260 */
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
261 static PrimitiveConstant forIntegerKind(JavaKind kind, long i) {
7105
f1f32b695d1e Make constructors of Constant private to ensure proper encapuslation of the type-overloaded primitive field; reduce to one constructor that sets all fields.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7103
diff changeset
262 switch (kind) {
21369
5aeab26703cb Use factory methods
Christian Wimmer <christian.wimmer@oracle.com>
parents: 18490
diff changeset
263 case Boolean:
5aeab26703cb Use factory methods
Christian Wimmer <christian.wimmer@oracle.com>
parents: 18490
diff changeset
264 return forBoolean(i != 0);
17197
ec35bb4eccb8 Add support for other data types to integer arithmetic nodes.
Roland Schatz <roland.schatz@oracle.com>
parents: 16094
diff changeset
265 case Byte:
21369
5aeab26703cb Use factory methods
Christian Wimmer <christian.wimmer@oracle.com>
parents: 18490
diff changeset
266 return forByte((byte) i);
17197
ec35bb4eccb8 Add support for other data types to integer arithmetic nodes.
Roland Schatz <roland.schatz@oracle.com>
parents: 16094
diff changeset
267 case Short:
21369
5aeab26703cb Use factory methods
Christian Wimmer <christian.wimmer@oracle.com>
parents: 18490
diff changeset
268 return forShort((short) i);
17197
ec35bb4eccb8 Add support for other data types to integer arithmetic nodes.
Roland Schatz <roland.schatz@oracle.com>
parents: 16094
diff changeset
269 case Char:
21369
5aeab26703cb Use factory methods
Christian Wimmer <christian.wimmer@oracle.com>
parents: 18490
diff changeset
270 return forChar((char) i);
7105
f1f32b695d1e Make constructors of Constant private to ensure proper encapuslation of the type-overloaded primitive field; reduce to one constructor that sets all fields.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7103
diff changeset
271 case Int:
21369
5aeab26703cb Use factory methods
Christian Wimmer <christian.wimmer@oracle.com>
parents: 18490
diff changeset
272 return forInt((int) i);
7105
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273 case Long:
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274 return forLong(i);
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275 default:
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276 throw new IllegalArgumentException("not an integer kind: " + kind);
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277 }
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278 }
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279
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280 /**
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281 * Creates a {@link JavaConstant} from a primitive integer of a certain width.
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282 */
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283 static PrimitiveConstant forPrimitiveInt(int bits, long i) {
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284 assert bits <= 64;
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285 switch (bits) {
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286 case 1:
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287 return forBoolean(i != 0);
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288 case 8:
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289 return forByte((byte) i);
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290 case 16:
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291 return forShort((short) i);
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292 case 32:
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293 return forInt((int) i);
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294 case 64:
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295 return forLong(i);
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296 default:
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297 throw new IllegalArgumentException("unsupported integer width: " + bits);
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298 }
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299 }
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300
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301 /**
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302 * Creates a boxed constant for the given boxed primitive value.
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303 *
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304 * @param value the Java boxed value
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305 * @return the primitive constant holding the {@code value}
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306 */
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307 static PrimitiveConstant forBoxedPrimitive(Object value) {
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308 if (value instanceof Boolean) {
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309 return forBoolean((Boolean) value);
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310 } else if (value instanceof Byte) {
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311 return forByte((Byte) value);
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312 } else if (value instanceof Character) {
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313 return forChar((Character) value);
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314 } else if (value instanceof Short) {
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315 return forShort((Short) value);
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316 } else if (value instanceof Integer) {
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317 return forInt((Integer) value);
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318 } else if (value instanceof Long) {
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319 return forLong((Long) value);
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320 } else if (value instanceof Float) {
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321 return forFloat((Float) value);
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parents: 14563
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322 } else if (value instanceof Double) {
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323 return forDouble((Double) value);
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324 } else {
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325 return null;
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326 }
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parents:
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327 }
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diff changeset
328
18320
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Doug Simon <doug.simon@oracle.com>
parents: 18319
diff changeset
329 static PrimitiveConstant forIllegal() {
22536
dc1aeef79e7e Refactoring: Rename Kind to JavaKind.
Roland Schatz <roland.schatz@oracle.com>
parents: 22516
diff changeset
330 return new PrimitiveConstant(JavaKind.Illegal, 0);
12617
bca33c3135de PEA: support for unsafe stores of mismatching sizes, cleanup, documentation
Lukas Stadler <lukas.stadler@jku.at>
parents: 11477
diff changeset
331 }
bca33c3135de PEA: support for unsafe stores of mismatching sizes, cleanup, documentation
Lukas Stadler <lukas.stadler@jku.at>
parents: 11477
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332
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333 /**
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334 * Returns a constant with the default value for the given kind.
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diff changeset
335 */
22536
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diff changeset
336 static JavaConstant defaultForKind(JavaKind kind) {
7530
5e3d1a68664e applied mx eclipseformat to all Java files
Doug Simon <doug.simon@oracle.com>
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diff changeset
337 switch (kind) {
7300
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338 case Boolean:
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339 return FALSE;
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340 case Byte:
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341 return forByte((byte) 0);
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342 case Char:
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parents: 7105
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343 return forChar((char) 0);
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Christian Wimmer <christian.wimmer@oracle.com>
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344 case Short:
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parents: 7105
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345 return forShort((short) 0);
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346 case Int:
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347 return INT_0;
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parents: 7105
diff changeset
348 case Double:
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parents: 7105
diff changeset
349 return DOUBLE_0;
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diff changeset
350 case Float:
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
351 return FLOAT_0;
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
352 case Long:
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
353 return LONG_0;
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parents: 7105
diff changeset
354 case Object:
18490
ca81508f2a19 Generalize NULL handling to work on arbitrary pointers.
Roland Schatz <roland.schatz@oracle.com>
parents: 18329
diff changeset
355 return NULL_POINTER;
7300
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
356 default:
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
357 throw new IllegalArgumentException(kind.toString());
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
358 }
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7105
diff changeset
359 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
360 }