Mercurial > projects > ldc
annotate dmd2/stringtable.c @ 945:03d7c4aac654
SWITCHED TO LLVM 2.5 !
Applied patch from ticket #129 to compile against latest LLVM. Thanks Frits van Bommel.
Fixed implicit return by asm block at the end of a function on x86-32. Other architectures will produce an error at the moment. Adding support for new targets is fairly simple.
Fixed return calling convention for complex numbers, ST and ST(1) were switched around.
Added some testcases.
I've run a dstress test and there are no regressions. However, the runtime does not seem to compile with symbolic debug information. -O3 -release -inline works well and is what I used for the dstress run. Tango does not compile, a small workaround is needed in tango.io.digest.Digest.Digest.hexDigest. See ticket #206 .
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Sun, 08 Feb 2009 05:26:54 +0100 |
parents | f04dde6e882c |
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1 |
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2 // Copyright (c) 1999-2008 by Digital Mars |
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3 // All Rights Reserved |
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4 // written by Walter Bright |
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5 // http://www.digitalmars.com |
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6 // License for redistribution is by either the Artistic License |
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7 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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8 // See the included readme.txt for details. |
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9 |
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10 |
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11 #include <stdio.h> |
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12 #include <string.h> |
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13 #include <stdlib.h> |
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14 |
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15 #include "root.h" |
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16 #include "mem.h" |
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17 #include "dchar.h" |
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18 #include "lstring.h" |
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19 #include "stringtable.h" |
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20 |
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21 StringTable::StringTable(unsigned size) |
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22 { |
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23 table = (void **)mem.calloc(size, sizeof(void *)); |
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24 tabledim = size; |
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25 count = 0; |
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26 } |
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27 |
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28 StringTable::~StringTable() |
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29 { |
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30 unsigned i; |
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31 |
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32 // Zero out dangling pointers to help garbage collector. |
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33 // Should zero out StringEntry's too. |
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34 for (i = 0; i < count; i++) |
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35 table[i] = NULL; |
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36 |
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37 mem.free(table); |
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38 table = NULL; |
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39 } |
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40 |
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41 struct StringEntry |
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42 { |
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43 StringEntry *left; |
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44 StringEntry *right; |
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45 hash_t hash; |
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46 |
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47 StringValue value; |
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48 |
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49 static StringEntry *alloc(const dchar *s, unsigned len); |
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50 }; |
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51 |
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52 StringEntry *StringEntry::alloc(const dchar *s, unsigned len) |
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53 { |
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54 StringEntry *se; |
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55 |
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56 se = (StringEntry *) mem.calloc(1,sizeof(StringEntry) - sizeof(Lstring) + Lstring::size(len)); |
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57 se->value.lstring.length = len; |
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58 se->hash = Dchar::calcHash(s,len); |
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59 memcpy(se->value.lstring.string, s, len * sizeof(dchar)); |
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60 return se; |
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61 } |
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62 |
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63 void **StringTable::search(const dchar *s, unsigned len) |
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64 { |
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65 hash_t hash; |
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66 unsigned u; |
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67 int cmp; |
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68 StringEntry **se; |
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69 |
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70 //printf("StringTable::search(%p,%d)\n",s,len); |
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71 hash = Dchar::calcHash(s,len); |
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72 u = hash % tabledim; |
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73 se = (StringEntry **)&table[u]; |
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74 //printf("\thash = %d, u = %d\n",hash,u); |
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75 while (*se) |
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76 { |
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77 cmp = (*se)->hash - hash; |
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78 if (cmp == 0) |
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79 { |
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80 cmp = (*se)->value.lstring.len() - len; |
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81 if (cmp == 0) |
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82 { |
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83 cmp = Dchar::memcmp(s,(*se)->value.lstring.toDchars(),len); |
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84 if (cmp == 0) |
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85 break; |
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86 } |
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87 } |
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88 if (cmp < 0) |
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89 se = &(*se)->left; |
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90 else |
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91 se = &(*se)->right; |
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92 } |
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93 //printf("\treturn %p, %p\n",se, (*se)); |
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94 return (void **)se; |
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95 } |
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96 |
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97 StringValue *StringTable::lookup(const dchar *s, unsigned len) |
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98 { StringEntry *se; |
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99 |
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100 se = *(StringEntry **)search(s,len); |
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101 if (se) |
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102 return &se->value; |
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103 else |
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104 return NULL; |
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105 } |
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106 |
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107 StringValue *StringTable::update(const dchar *s, unsigned len) |
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108 { StringEntry **pse; |
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109 StringEntry *se; |
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110 |
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111 pse = (StringEntry **)search(s,len); |
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112 se = *pse; |
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113 if (!se) // not in table: so create new entry |
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114 { |
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115 se = StringEntry::alloc(s, len); |
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116 *pse = se; |
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117 } |
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118 return &se->value; |
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119 } |
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120 |
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121 StringValue *StringTable::insert(const dchar *s, unsigned len) |
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122 { StringEntry **pse; |
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123 StringEntry *se; |
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124 |
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125 pse = (StringEntry **)search(s,len); |
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126 se = *pse; |
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127 if (se) |
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128 return NULL; // error: already in table |
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129 else |
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130 { |
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131 se = StringEntry::alloc(s, len); |
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132 *pse = se; |
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133 } |
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134 return &se->value; |
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135 } |
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136 |
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137 |
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138 |
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139 |