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comparison jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/Register.java @ 22688:ef7d87db544a

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Remove unused reference map index.
author Roland Schatz <roland.schatz@oracle.com>
date Fri, 16 Oct 2015 11:12:34 +0200
parents 1bbd4a7c274b
children 1d4ce2d19e52
comparison
equal deleted inserted replaced
22687:d43f6d932ad5 22688:ef7d87db544a
79 * A platform specific register type that describes which values can be stored in a register. 79 * A platform specific register type that describes which values can be stored in a register.
80 */ 80 */
81 public static class RegisterCategory { 81 public static class RegisterCategory {
82 82
83 private final String name; 83 private final String name;
84
85 private final boolean mayContainReference; 84 private final boolean mayContainReference;
86 private final int referenceMapOffset;
87 private final int referenceMapShift;
88 85
89 public RegisterCategory(String name) { 86 public RegisterCategory(String name) {
90 this(name, true, 0, 0); 87 this(name, true);
91 } 88 }
92 89
93 public RegisterCategory(String name, boolean mayContainReference) { 90 public RegisterCategory(String name, boolean mayContainReference) {
94 this(name, mayContainReference, 0, 0);
95 }
96
97 public RegisterCategory(String name, int referenceMapOffset) {
98 this(name, true, referenceMapOffset, 0);
99 }
100
101 public RegisterCategory(String name, int referenceMapOffset, int referenceMapShift) {
102 this(name, true, referenceMapOffset, referenceMapShift);
103 }
104
105 private RegisterCategory(String name, boolean mayContainReference, int referenceMapOffset, int referenceMapShift) {
106 this.name = name; 91 this.name = name;
107 this.mayContainReference = mayContainReference; 92 this.mayContainReference = mayContainReference;
108 this.referenceMapOffset = referenceMapOffset;
109 this.referenceMapShift = referenceMapShift;
110 } 93 }
111 94
112 @Override 95 @Override
113 public String toString() { 96 public String toString() {
114 return name; 97 return name;
121 104
122 @Override 105 @Override
123 public boolean equals(Object obj) { 106 public boolean equals(Object obj) {
124 if (obj instanceof RegisterCategory) { 107 if (obj instanceof RegisterCategory) {
125 RegisterCategory that = (RegisterCategory) obj; 108 RegisterCategory that = (RegisterCategory) obj;
126 return this.referenceMapOffset == that.referenceMapOffset && this.referenceMapShift == that.referenceMapShift && this.name.equals(that.name); 109 return this.name.equals(that.name);
127 } 110 }
128 return false; 111 return false;
129 } 112 }
130 } 113 }
131 114
151 /** 134 /**
152 * Determine whether this register needs to be part of the reference map. 135 * Determine whether this register needs to be part of the reference map.
153 */ 136 */
154 public boolean mayContainReference() { 137 public boolean mayContainReference() {
155 return registerCategory.mayContainReference; 138 return registerCategory.mayContainReference;
156 }
157
158 /**
159 * Get the start index of this register in the {@link ReferenceMap}. This method may only be
160 * called if {@link #mayContainReference()} is true.
161 */
162 public int getReferenceMapIndex() {
163 assert mayContainReference();
164 return (encoding << registerCategory.referenceMapShift) + registerCategory.referenceMapOffset;
165 } 139 }
166 140
167 /** 141 /**
168 * Gets this register as a {@linkplain RegisterValue value} with a specified kind. 142 * Gets this register as a {@linkplain RegisterValue value} with a specified kind.
169 * 143 *