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annotate druntime/src/compiler/ldc/arrayInit.d @ 759:d3eb054172f9

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Added copy of druntime from DMD 2.020 modified for LDC.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Tue, 11 Nov 2008 01:52:37 +0100
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759
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1 private import ldc.intrinsics;
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2
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3 extern(C):
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4
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5 int memcmp(void*,void*,size_t);
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6 size_t strlen(char*);
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7
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8 version(LLVM64)
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9 alias llvm_memcpy_i64 llvm_memcpy;
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10 else
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11 alias llvm_memcpy_i32 llvm_memcpy;
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12
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13 // per-element array init routines
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14
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15 void _d_array_init_i1(bool* a, size_t n, bool v)
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16 {
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17 auto p = a;
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18 auto end = a+n;
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19 while (p !is end)
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20 *p++ = v;
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21 }
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22
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23 void _d_array_init_i8(ubyte* a, size_t n, ubyte v)
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24 {
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25 auto p = a;
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26 auto end = a+n;
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27 while (p !is end)
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28 *p++ = v;
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29 }
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30
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31 void _d_array_init_i16(ushort* a, size_t n, ushort v)
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32 {
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33 auto p = a;
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34 auto end = a+n;
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35 while (p !is end)
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36 *p++ = v;
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37 }
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38
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39 void _d_array_init_i32(uint* a, size_t n, uint v)
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40 {
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41 auto p = a;
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42 auto end = a+n;
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43 while (p !is end)
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44 *p++ = v;
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45 }
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46
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47 void _d_array_init_i64(ulong* a, size_t n, ulong v)
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48 {
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49 auto p = a;
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50 auto end = a+n;
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51 while (p !is end)
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52 *p++ = v;
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53 }
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54
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55 void _d_array_init_float(float* a, size_t n, float v)
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56 {
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57 auto p = a;
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58 auto end = a+n;
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59 while (p !is end)
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60 *p++ = v;
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61 }
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62
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63 void _d_array_init_double(double* a, size_t n, double v)
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64 {
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65 auto p = a;
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66 auto end = a+n;
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67 while (p !is end)
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68 *p++ = v;
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69 }
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70
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71 void _d_array_init_real(real* a, size_t n, real v)
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72 {
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73 auto p = a;
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74 auto end = a+n;
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75 while (p !is end)
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76 *p++ = v;
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77 }
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78
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79 void _d_array_init_cfloat(cfloat* a, size_t n, cfloat v)
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80 {
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81 auto p = a;
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82 auto end = a+n;
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83 while (p !is end)
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84 *p++ = v;
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85 }
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86
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87 void _d_array_init_cdouble(cdouble* a, size_t n, cdouble v)
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88 {
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89 auto p = a;
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90 auto end = a+n;
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91 while (p !is end)
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92 *p++ = v;
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93 }
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94
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95 void _d_array_init_creal(creal* a, size_t n, creal v)
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96 {
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97 auto p = a;
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98 auto end = a+n;
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99 while (p !is end)
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100 *p++ = v;
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101 }
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102
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103 void _d_array_init_pointer(void** a, size_t n, void* v)
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104 {
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105 auto p = a;
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106 auto end = a+n;
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107 while (p !is end)
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108 *p++ = v;
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109 }
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110
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111 void _d_array_init_mem(void* a, size_t na, void* v, size_t nv)
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112 {
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113 auto p = a;
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114 auto end = a + na*nv;
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115 while (p !is end) {
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116 llvm_memcpy(p,v,nv,0);
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117 p += nv;
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118 }
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119 }
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120
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121 /*
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122 void _d_array_init(TypeInfo ti, void* a)
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123 {
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124 auto initializer = ti.next.init();
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125 auto isize = initializer.length;
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126 auto q = initializer.ptr;
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127
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128 if (isize == 1)
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129 memset(p, *cast(ubyte*)q, size);
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130 else if (isize == int.sizeof)
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131 {
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132 int init = *cast(int*)q;
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133 size /= int.sizeof;
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134 for (size_t u = 0; u < size; u++)
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135 {
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136 (cast(int*)p)[u] = init;
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137 }
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138 }
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139 else
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140 {
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141 for (size_t u = 0; u < size; u += isize)
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142 {
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143 memcpy(p + u, q, isize);
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144 }
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145 }
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146 }*/
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147
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148 // for array cast
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149 size_t _d_array_cast_len(size_t len, size_t elemsz, size_t newelemsz)
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150 {
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151 if (newelemsz == 1) {
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152 return len*elemsz;
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153 }
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154 else if ((len*elemsz) % newelemsz) {
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155 throw new Exception("Bad array cast");
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156 }
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157 return (len*elemsz)/newelemsz;
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158 }