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annotate gen/dvalue.h @ 102:027b8d8b71ec trunk

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[svn r106] Turns out the last commit wasn't enough, now the D->LLVM process is even more split up. Basically it tries to do the following in order: Resolve types, Declare symbols, Create constant initializers, Apply initializers, Generate functions bodies. ClassInfo is now has the most useful(biased?) members working. Probably other stuf...
author lindquist
date Sun, 18 Nov 2007 06:52:57 +0100
parents 058d3925950e
children 4d1e9eb001e0
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1 #ifndef LLVMDC_GEN_DVALUE_H
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2 #define LLVMDC_GEN_DVALUE_H
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3
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4 /*
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5 These classes are used for generating the IR. They encapsulate D values and
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6 provide a common interface to the most common operations. When more specialized
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7 handling is necessary, they hold enough information to do-the-right-thing (TM)
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8 */
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9
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10 #include <cassert>
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11 #include "root.h"
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12
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13 struct Type;
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14 struct Dsymbol;
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15 struct VarDeclaration;
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16 struct FuncDeclaration;
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17
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18 namespace llvm
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19 {
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20 class Value;
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21 class Type;
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22 class Constant;
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23 }
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24
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25 struct DImValue;
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26 struct DConstValue;
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27 struct DNullValue;
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28 struct DVarValue;
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29 struct DFieldValue;
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30 struct DThisValue;
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31 struct DFuncValue;
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32 struct DSliceValue;
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33 struct DArrayLenValue;
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34 struct DLValueCast;
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35
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36 // base class for d-values
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37 struct DValue : Object
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38 {
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39 virtual Type* getType() = 0;
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40
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41 virtual llvm::Value* getLVal() { assert(0); return 0; }
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42 virtual llvm::Value* getRVal() { assert(0); return 0; }
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43
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44 virtual DImValue* isIm() { return NULL; }
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45 virtual DConstValue* isConst() { return NULL; }
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46 virtual DNullValue* isNull() { return NULL; }
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47 virtual DVarValue* isVar() { return NULL; }
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48 virtual DFieldValue* isField() { return NULL; }
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49 virtual DThisValue* isThis() { return NULL; }
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50 virtual DSliceValue* isSlice() { return NULL; }
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51 virtual DFuncValue* isFunc() { return NULL; }
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52 virtual DArrayLenValue* isArrayLen() { return NULL; }
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53 virtual DLValueCast* isLValueCast() { return NULL; }
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54
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55 virtual bool inPlace() { return false; }
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56
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57 protected:
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58 DValue() {}
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59 DValue(const DValue&) { }
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60 DValue& operator=(const DValue&) { return *this; }
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61 };
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62
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63 // immediate d-value
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64 struct DImValue : DValue
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65 {
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66 Type* type;
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67 llvm::Value* val;
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68 bool inplace;
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69
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70 DImValue(Type* t, llvm::Value* v, bool i = false) { type = t; val = v; inplace = i; }
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71
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72 virtual llvm::Value* getRVal() { assert(val); return val; }
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73
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74 virtual Type* getType() { assert(type); return type; }
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75 virtual DImValue* isIm() { return this; }
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76
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77 virtual bool inPlace() { return inplace; }
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78 };
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79
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80 // constant d-value
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81 struct DConstValue : DValue
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82 {
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83 Type* type;
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84 llvm::Constant* c;
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85
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86 DConstValue(Type* t, llvm::Constant* con) { type = t; c = con; }
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87
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88 virtual llvm::Value* getRVal();
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89
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90 virtual Type* getType() { assert(type); return type; }
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91 virtual DConstValue* isConst() { return this; }
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92 };
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93
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94 // null d-value
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95 struct DNullValue : DConstValue
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96 {
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97 DNullValue(Type* t, llvm::Constant* con) : DConstValue(t,con) {}
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98 virtual DNullValue* isNull() { return this; }
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99 };
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100
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101 // variable d-value
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102 struct DVarValue : DValue
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103 {
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104 Type* type;
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105 VarDeclaration* var;
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106 llvm::Value* val;
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107 llvm::Value* rval;
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108 bool lval;
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109
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110 DVarValue(VarDeclaration* vd, llvm::Value* llvmValue, bool lvalue);
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111 DVarValue(Type* vd, llvm::Value* lv, llvm::Value* rv);
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112 DVarValue(Type* t, llvm::Value* llvmValue, bool lvalue);
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113
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114 virtual llvm::Value* getLVal();
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115 virtual llvm::Value* getRVal();
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116
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117 virtual Type* getType() { assert(type); return type; }
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118 virtual DVarValue* isVar() { return this; }
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119 };
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120
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121 // field d-value
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122 struct DFieldValue : DVarValue
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123 {
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124 DFieldValue(Type* t, llvm::Value* llvmValue, bool l) : DVarValue(t, llvmValue, l) {}
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125 virtual DFieldValue* isField() { return this; }
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126 };
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127
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128 // this d-value
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129 struct DThisValue : DVarValue
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130 {
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131 DThisValue(VarDeclaration* vd, llvm::Value* llvmValue) : DVarValue(vd, llvmValue, true) {}
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132 virtual DThisValue* isThis() { return this; }
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133 };
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134
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135 // array length d-value
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136 struct DArrayLenValue : DVarValue
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137 {
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138 DArrayLenValue(Type* t, llvm::Value* llvmValue) : DVarValue(t, llvmValue, true) {}
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139 virtual DArrayLenValue* isArrayLen() { return this; }
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140 };
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141
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142 // slice d-value
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143 struct DSliceValue : DValue
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144 {
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145 Type* type;
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146 llvm::Value* len;
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147 llvm::Value* ptr;
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148
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149 DSliceValue(Type* t, llvm::Value* l, llvm::Value* p) { type=t; ptr=p; len=l; }
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150
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151 virtual Type* getType() { assert(type); return type; }
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152 virtual DSliceValue* isSlice() { return this; }
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153 };
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154
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155 // function d-value
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156 struct DFuncValue : DValue
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157 {
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158 Type* type;
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159 FuncDeclaration* func;
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160 llvm::Value* val;
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161 llvm::Value* vthis;
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162 unsigned cc;
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163
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164 DFuncValue(FuncDeclaration* fd, llvm::Value* v, llvm::Value* vt = 0);
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165
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166 virtual llvm::Value* getLVal();
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167 virtual llvm::Value* getRVal();
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168
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169 virtual Type* getType() { assert(type); return type; }
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170 virtual DFuncValue* isFunc() { return this; }
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171 };
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172
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173 // l-value cast d-value
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174 struct DLValueCast : DValue
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175 {
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176 Type* type;
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177 llvm::Value* lval;
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178 llvm::Value* rval;
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179
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180 DLValueCast(Type* t, llvm::Value* l, llvm::Value* r) {
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181 type = t;
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182 lval = l;
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183 rval = r;
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184 }
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185
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186 virtual llvm::Value* getLVal() { assert(lval); return lval; }
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187 virtual llvm::Value* getRVal() { assert(rval); return rval; }
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188
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189 virtual Type* getType() { assert(type); return type; }
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190 virtual DLValueCast* isLValueCast() { return this; }
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191 };
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192
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193 #endif // LLVMDC_GEN_DVALUE_H