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annotate gen/dvalue.h @ 479:672eb4893b55

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Move AllocaInst creation into DtoAlloca helper. Will enable special zero-init of fp80 reals' padding.
author Christian Kamm <kamm incasoftware de>
date Tue, 05 Aug 2008 19:28:19 +0200
parents 45a67b6f1310
children a34078905d01
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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 DFuncValue;
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31 struct DSliceValue;
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32 struct DArrayLenValue;
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33 struct DLRValue;
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34 struct DComplexValue;
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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 LLValue* getLVal() { assert(0); return 0; }
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42 virtual LLValue* getRVal() { assert(0); return 0; }
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43
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44 virtual bool isLVal() { return false; }
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45
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46 virtual DImValue* isIm() { return NULL; }
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47 virtual DConstValue* isConst() { return NULL; }
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48 virtual DNullValue* isNull() { return NULL; }
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49 virtual DVarValue* isVar() { return NULL; }
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50 virtual DFieldValue* isField() { return NULL; }
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51 virtual DSliceValue* isSlice() { return NULL; }
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52 virtual DFuncValue* isFunc() { return NULL; }
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53 virtual DArrayLenValue* isArrayLen() { return NULL; }
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54 virtual DComplexValue* isComplex() { return NULL; }
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55 virtual DLRValue* isLRValue() { return NULL; }
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56
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57 virtual bool inPlace() { return false; }
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58
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59 protected:
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60 DValue() {}
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61 DValue(const DValue&) { }
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62 DValue& operator=(const DValue&) { return *this; }
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63 };
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64
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65 // immediate d-value
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66 struct DImValue : DValue
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67 {
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68 Type* type;
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69 LLValue* val;
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70 bool inplace;
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71
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72 DImValue(Type* t, LLValue* v, bool in_place = false) { type = t; val = v; inplace = in_place; }
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74 virtual LLValue* getRVal() { assert(val); return val; }
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76 virtual Type*& getType() { assert(type); return type; }
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77 virtual DImValue* isIm() { return this; }
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78
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79 virtual bool inPlace() { return inplace; }
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80 };
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81
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82 // constant d-value
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83 struct DConstValue : DValue
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84 {
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85 Type* type;
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86 LLConstant* c;
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88 DConstValue(Type* t, LLConstant* con) { type = t; c = con; }
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90 virtual LLValue* getRVal();
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91
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92 virtual Type*& getType() { assert(type); return type; }
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93 virtual DConstValue* isConst() { return this; }
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94 };
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95
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96 // null d-value
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97 struct DNullValue : DConstValue
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98 {
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99 DNullValue(Type* t, LLConstant* con) : DConstValue(t,con) {}
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100 virtual DNullValue* isNull() { return this; }
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101 };
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102
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103 // variable d-value
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104 struct DVarValue : DValue
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105 {
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106 Type* type;
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107 VarDeclaration* var;
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108 LLValue* val;
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109 LLValue* rval;
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110 bool lval;
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111
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112 DVarValue(Type* t, VarDeclaration* vd, LLValue* llvmValue, bool lvalue);
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113 DVarValue(Type* t, LLValue* lv, LLValue* rv);
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114 DVarValue(Type* t, LLValue* llvmValue, bool lvalue);
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115
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116 virtual bool isLVal() { return val && lval; }
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117 virtual LLValue* getLVal();
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118 virtual LLValue* getRVal();
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119
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120 virtual Type*& getType() { assert(type); return type; }
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121 virtual DVarValue* isVar() { return this; }
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122 };
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123
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124 // field d-value
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125 struct DFieldValue : DVarValue
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126 {
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127 DFieldValue(Type* t, LLValue* llvmValue, bool l) : DVarValue(t, llvmValue, l) {}
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128 virtual DFieldValue* isField() { return this; }
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129 };
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130
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131 // slice d-value
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132 struct DSliceValue : DValue
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133 {
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134 Type* type;
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135 LLValue* len;
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136 LLValue* ptr;
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137
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138 DSliceValue(Type* t, LLValue* l, LLValue* p) { type=t; ptr=p; len=l; }
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139
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140 virtual Type*& getType() { assert(type); return type; }
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141 virtual DSliceValue* isSlice() { return this; }
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142 };
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143
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144 // function d-value
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145 struct DFuncValue : DValue
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146 {
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147 Type* type;
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148 FuncDeclaration* func;
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149 LLValue* val;
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150 LLValue* vthis;
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151
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152 DFuncValue(FuncDeclaration* fd, LLValue* v, LLValue* vt = 0);
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153
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154 virtual LLValue* getRVal();
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155
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156 virtual Type*& getType() { assert(type); return type; }
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157 virtual DFuncValue* isFunc() { return this; }
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158 };
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159
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160 // l-value and r-value pair d-value
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161 struct DLRValue : DValue
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162 {
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163 DValue* lvalue;
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164 DValue* rvalue;
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165
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166 DLRValue(DValue* lval, DValue* rval) {
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167 lvalue = lval;
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168 rvalue = rval;
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169 }
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170
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171 virtual bool isLVal() { return true; }
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172 virtual LLValue* getLVal() { return lvalue->isLVal() ? lvalue->getLVal() : lvalue->getRVal(); }
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173 virtual LLValue* getRVal() { return rvalue->getRVal(); }
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174
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175 Type*& getLType() { return lvalue->getType(); }
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176 Type*& getRType() { return rvalue->getType(); }
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177 virtual Type*& getType() { return getRType(); }
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178 virtual DLRValue* isLRValue() { return this; }
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179 };
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180
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181 // complex number immediate d-value (much like slice)
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182 struct DComplexValue : DValue
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183 {
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184 Type* type;
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185 LLValue* re;
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186 LLValue* im;
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187
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188 DComplexValue(Type* t, LLValue* r, LLValue* i) {
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189 type = t;
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190 re = r;
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191 im = i;
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192 }
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193
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194 virtual Type*& getType() { assert(type); return type; }
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195 virtual DComplexValue* isComplex() { return this; }
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196 };
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197
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198 #endif // LLVMDC_GEN_DVALUE_H