Mercurial > hg > truffle
annotate src/cpu/ppc/vm/copy_ppc.hpp @ 18357:09550eb6ddfb
replace use of '==' with .equals()
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 12 Nov 2014 15:33:20 +0100 |
parents | 67fa91961822 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright 2012, 2013 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #ifndef CPU_PPC_VM_COPY_PPC_HPP |
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27 #define CPU_PPC_VM_COPY_PPC_HPP |
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28 |
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29 #ifndef PPC64 |
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30 #error "copy currently only implemented for PPC64" |
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31 #endif |
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32 |
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33 // Inline functions for memory copy and fill. |
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34 |
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35 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
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36 (void)memmove(to, from, count * HeapWordSize); |
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37 } |
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38 |
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39 static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
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40 switch (count) { |
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41 case 8: to[7] = from[7]; |
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42 case 7: to[6] = from[6]; |
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43 case 6: to[5] = from[5]; |
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44 case 5: to[4] = from[4]; |
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45 case 4: to[3] = from[3]; |
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46 case 3: to[2] = from[2]; |
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47 case 2: to[1] = from[1]; |
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48 case 1: to[0] = from[0]; |
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49 case 0: break; |
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50 default: (void)memcpy(to, from, count * HeapWordSize); |
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51 break; |
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52 } |
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53 } |
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54 |
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55 static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) { |
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56 switch (count) { |
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57 case 8: to[7] = from[7]; |
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58 case 7: to[6] = from[6]; |
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59 case 6: to[5] = from[5]; |
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60 case 5: to[4] = from[4]; |
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61 case 4: to[3] = from[3]; |
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62 case 3: to[2] = from[2]; |
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63 case 2: to[1] = from[1]; |
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64 case 1: to[0] = from[0]; |
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65 case 0: break; |
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66 default: while (count-- > 0) { |
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67 *to++ = *from++; |
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68 } |
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69 break; |
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70 } |
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71 } |
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72 |
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73 static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
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74 (void)memmove(to, from, count * HeapWordSize); |
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75 } |
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76 |
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77 static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
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78 pd_disjoint_words(from, to, count); |
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79 } |
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80 |
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81 static void pd_conjoint_bytes(void* from, void* to, size_t count) { |
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82 (void)memmove(to, from, count); |
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83 } |
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84 |
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85 static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) { |
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86 (void)memmove(to, from, count); |
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87 } |
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88 |
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89 // Template for atomic, element-wise copy. |
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90 template <class T> |
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91 static void copy_conjoint_atomic(T* from, T* to, size_t count) { |
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92 if (from > to) { |
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93 while (count-- > 0) { |
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94 // Copy forwards |
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95 *to++ = *from++; |
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96 } |
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97 } else { |
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98 from += count - 1; |
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99 to += count - 1; |
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100 while (count-- > 0) { |
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101 // Copy backwards |
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102 *to-- = *from--; |
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103 } |
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104 } |
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105 } |
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106 |
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107 static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) { |
14445 | 108 // TODO: contribute optimized version. |
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109 copy_conjoint_atomic<jshort>(from, to, count); |
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110 } |
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111 |
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112 static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) { |
14445 | 113 // TODO: contribute optimized version. |
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114 copy_conjoint_atomic<jint>(from, to, count); |
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115 } |
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116 |
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117 static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) { |
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118 copy_conjoint_atomic<jlong>(from, to, count); |
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119 } |
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120 |
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121 static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) { |
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122 copy_conjoint_atomic<oop>(from, to, count); |
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123 } |
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124 |
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125 static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) { |
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126 pd_conjoint_bytes_atomic(from, to, count); |
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127 } |
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128 |
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129 static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { |
14445 | 130 // TODO: contribute optimized version. |
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131 pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); |
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132 } |
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133 |
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134 static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { |
14445 | 135 // TODO: contribute optimized version. |
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136 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); |
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137 } |
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138 |
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139 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { |
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140 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); |
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141 } |
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142 |
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143 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) { |
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144 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); |
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145 } |
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146 |
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147 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { |
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148 julong* to = (julong*)tohw; |
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149 julong v = ((julong)value << 32) | value; |
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150 while (count-- > 0) { |
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151 *to++ = v; |
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152 } |
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153 } |
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154 |
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155 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { |
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156 pd_fill_to_words(tohw, count, value); |
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157 } |
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158 |
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159 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { |
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160 (void)memset(to, value, count); |
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161 } |
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162 |
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163 static void pd_zero_to_words(HeapWord* tohw, size_t count) { |
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164 pd_fill_to_words(tohw, count, 0); |
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165 } |
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166 |
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167 static void pd_zero_to_bytes(void* to, size_t count) { |
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168 (void)memset(to, 0, count); |
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169 } |
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170 |
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171 #endif // CPU_PPC_VM_COPY_PPC_HPP |