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0
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1 module dmd.codegen.Util;
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2
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3 import dmd.Loc;
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4 import dmd.IRState;
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5 import dmd.Type;
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6 import dmd.Array;
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7 import dmd.Dsymbol;
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8 import dmd.FuncDeclaration;
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9 import dmd.Identifier;
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10 import dmd.RET;
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11 import dmd.TY;
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12 import dmd.LINK;
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13 import dmd.Expression;
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14 import dmd.Argument;
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15 import dmd.STC;
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16 import dmd.Global;
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17 import dmd.InterfaceDeclaration;
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18 import dmd.AggregateDeclaration;
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19 import dmd.AttribDeclaration;
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20 import dmd.TupleDeclaration;
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21 import dmd.StructDeclaration;
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22 import dmd.VarDeclaration;
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23 import dmd.ClassDeclaration;
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24 import dmd.TemplateMixin;
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25 import dmd.TypedefDeclaration;
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26 import dmd.ExpInitializer;
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27 import dmd.TypeFunction;
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28 import dmd.TypeStruct;
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29 import dmd.TypeSArray;
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30 import dmd.TOK;
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31 import dmd.Util;
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32 import dmd.LabelStatement;
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33 import dmd.DsymbolExp;
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34 import dmd.LabelDsymbol;
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35 import dmd.backend.elem;
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36 import dmd.backend.TYPE;
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37 import dmd.backend.Util;
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38 import dmd.backend.Classsym;
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39 import dmd.backend.SC;
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40 import dmd.backend.FL;
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41 import dmd.backend.SFL;
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42 import dmd.backend.STR;
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43 import dmd.backend.TYM;
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44 import dmd.backend.TF;
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45 import dmd.backend.OPER;
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46 import dmd.backend.mTYman;
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47 import dmd.backend.TYFL;
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48 import dmd.backend.mTY;
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49 import dmd.backend.Symbol;
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50 import dmd.backend.Blockx;
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51 import dmd.backend.RTLSYM;
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52 import dmd.backend.block;
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53 import dmd.backend.LIST;
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54
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55 import std.string;
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56 import core.stdc.string;
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57
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58 /************************************
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59 * Call a function.
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60 */
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61
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62 elem* callfunc(Loc loc,
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63 IRState* irs,
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64 int directcall, // 1: don't do virtual call
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65 Type tret, // return type
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66 elem *ec, // evaluates to function address
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67 Type ectype, // original type of ec
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68 FuncDeclaration fd, // if !=null, this is the function being called
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69 Type t, // TypeDelegate or TypeFunction for this function
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70 elem* ehidden, // if !=null, this is the 'hidden' argument
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71 Array arguments)
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72 {
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73 elem* ep;
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74 elem* e;
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75 elem* ethis = null;
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76 elem* eside = null;
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77 int i;
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78 tym_t ty;
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79 tym_t tyret;
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80 RET retmethod;
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81 int reverse;
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82 TypeFunction tf;
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83 OPER op;
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84
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85 static if (false) {
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86 printf("callfunc(directcall = %d, tret = '%s', ec = %p, fd = %p)\n",
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87 directcall, tret.toChars(), ec, fd);
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88 printf("ec: "); elem_print(ec);
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89 if (fd)
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90 printf("fd = '%s'\n", fd.toChars());
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91 }
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92
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93 t = t.toBasetype();
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94 if (t.ty == TY.Tdelegate)
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95 {
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96 // A delegate consists of:
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97 // { Object *this; Function *funcptr; }
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98 assert(!fd);
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99 assert(t.nextOf().ty == TY.Tfunction);
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100 tf = cast(TypeFunction)t.nextOf();
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101 ethis = ec;
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102 ec = el_same(ðis);
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103 ethis = el_una(OPER.OP64_32, TYM.TYnptr, ethis); // get this
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104 ec = array_toPtr(t, ec); // get funcptr
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105 ec = el_una(OPER.OPind, tf.totym(), ec);
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106 }
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107 else
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108 {
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109 assert(t.ty == TY.Tfunction);
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110 tf = cast(TypeFunction)t;
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111 }
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112
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113 retmethod = tf.retStyle();
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114 ty = ec.Ety;
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115 if (fd)
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116 ty = fd.toSymbol().Stype.Tty;
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117 reverse = tyrevfunc(ty);
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118 ep = null;
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119 if (arguments)
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120 {
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121 // j=1 if _arguments[] is first argument
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122 int j = (tf.linkage == LINK.LINKd && tf.varargs == 1);
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123
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124 for (i = 0; i < arguments.dim ; i++)
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125 {
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126 Expression arg;
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127 elem* ea;
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128
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129 arg = cast(Expression)arguments.data[i];
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130 //printf("\targ[%d]: %s\n", i, arg.toChars());
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131
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132 size_t nparams = Argument.dim(tf.parameters);
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133 if (i - j < nparams && i >= j)
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134 {
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135 Argument p = Argument.getNth(tf.parameters, i - j);
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136
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137 if (p.storageClass & (STC.STCout | STC.STCref))
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138 {
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139 // Convert argument to a pointer,
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140 // use AddrExp.toElem()
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141 Expression ae = arg.addressOf(null);
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142 ea = ae.toElem(irs);
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143 goto L1;
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144 }
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145 }
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146 ea = arg.toElem(irs);
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147 L1:
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148 if (tybasic(ea.Ety) == TYM.TYstruct)
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149 {
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150 ea = el_una(OPER.OPstrpar, TYM.TYstruct, ea);
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151 ea.Enumbytes = ea.E1.Enumbytes;
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152 assert(ea.Enumbytes);
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153 }
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154 if (reverse)
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155 ep = el_param(ep,ea);
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156 else
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157 ep = el_param(ea,ep);
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158 }
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159 }
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160
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161 if (retmethod == RET.RETstack)
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162 {
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163 if (!ehidden)
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164 {
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165 // Don't have one, so create one
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166 type* tt;
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167
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168 if (tf.next.toBasetype().ty == TY.Tstruct)
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169 tt = tf.next.toCtype();
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170 else
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171 tt = type_fake(tf.next.totym());
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172
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173 Symbol* stmp = symbol_genauto(tt);
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174 ehidden = el_ptr(stmp);
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175 }
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176 if ((global.params.isLinux || global.params.isOSX || global.params.isFreeBSD || global.params.isSolaris) && tf.linkage != LINK.LINKd) {
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177 ; // ehidden goes last on Linux/OSX C++
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178 } else {
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179 if (ep)
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180 {
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181 static if (false) { // BUG: implement
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182 if (reverse && type_mangle(tfunc) == mTYman.mTYman_cpp) {
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183 ep = el_param(ehidden,ep);
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184 } else {
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185 ep = el_param(ep,ehidden);
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186 }
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187 } else {
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188 ep = el_param(ep,ehidden);
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189 }
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190 }
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191 else
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192 ep = ehidden;
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193 ehidden = null;
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194 }
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195 }
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196
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197 if (fd && fd.isMember2())
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198 {
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199 InterfaceDeclaration intd;
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200 Symbol* sfunc;
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201 AggregateDeclaration ad;
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202
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203 ad = fd.isThis();
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204 if (ad)
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205 {
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206 ethis = ec;
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207 if (ad.isStructDeclaration() && tybasic(ec.Ety) != TYM.TYnptr)
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208 {
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209 ethis = addressElem(ec, ectype);
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210 }
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211 }
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212 else
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213 {
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214 // Evaluate ec for side effects
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215 eside = ec;
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216 }
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217 sfunc = fd.toSymbol();
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218
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219 if (!fd.isVirtual() ||
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220 directcall || // BUG: fix
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221 fd.isFinal())
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222 {
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223 // make static call
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224 ec = el_var(sfunc);
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225 }
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226 else
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227 {
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228 // make virtual call
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229 elem* ev;
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230 uint vindex;
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231
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232 assert(ethis);
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233 ev = el_same(ðis);
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234 ev = el_una(OPER.OPind, TYM.TYnptr, ev);
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235 vindex = fd.vtblIndex;
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236
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237 // Build *(ev + vindex * 4)
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238 ec = el_bin(OPER.OPadd, TYM.TYnptr, ev, el_long(TYM.TYint, vindex * 4));
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239 ec = el_una(OPER.OPind, TYM.TYnptr, ec);
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240 ec = el_una(OPER.OPind, tybasic(sfunc.Stype.Tty), ec);
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241 }
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242 }
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243 else if (fd && fd.isNested())
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244 {
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245 assert(!ethis);
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246 ethis = getEthis(Loc(0), irs, fd);
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247 }
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248
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249 ep = el_param(ep, ethis);
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250 if (ehidden)
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251 ep = el_param(ep, ehidden); // if ehidden goes last
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252
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253 tyret = tret.totym();
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254
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255 // Look for intrinsic functions
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256 if (ec.Eoper == OPER.OPvar && (op = intrinsic_oper(ec.EV.sp.Vsym.Sident.ptr)) != OPER.OPMAX)
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257 {
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258 el_free(ec);
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259 if (OTbinary(op))
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260 {
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261 ep.Eoper = op;
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262 ep.Ety = tyret;
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263 e = ep;
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264 if (op == OPER.OPscale)
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265 {
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266 elem *et = e.E1;
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267 e.E1() = el_una(OPER.OPd_ld, TYM.TYldouble, e.E1);
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268 e.E1() = el_una(OPER.OPs32_d, TYM.TYdouble, e.E2);
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269 e.E2() = et;
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270 }
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271 else if (op == OPER.OPyl2x || op == OPER.OPyl2xp1)
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272 {
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273 elem *et = e.E1;
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274 e.E1() = e.E2;
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275 e.E2() = et;
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276 }
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277 }
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278 else
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279 e = el_una(op,tyret,ep);
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280 }
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281 else if (ep)
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282 e = el_bin(tf.ispure ? OPER.OPcallns : OPER.OPcall, tyret, ec, ep);
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283 else
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284 e = el_una(tf.ispure ? OPER.OPucallns : OPER.OPucall, tyret, ec);
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285
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286 if (retmethod == RET.RETstack)
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287 {
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288 e.Ety = TYM.TYnptr;
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289 e = el_una(OPER.OPind, tyret, e);
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290 }
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291
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292 version (DMDV2) {
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293 if (tf.isref)
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294 {
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295 e.Ety = TYM.TYnptr;
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296 e = el_una(OPER.OPind, tyret, e);
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297 }
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298 }
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299
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300 if (tybasic(tyret) == TYM.TYstruct)
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301 {
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302 e.Enumbytes = cast(uint)tret.size();
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303 }
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304
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305 e = el_combine(eside, e);
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306 return e;
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307 }
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308
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309 /**************************************
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310 * Fake a struct symbol.
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311 */
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312
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313 Classsym* fake_classsym(Identifier id)
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314 {
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315 TYPE* t;
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316 Classsym* scc;
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317
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318 scc = cast(Classsym*)symbol_calloc(toStringz(id.toChars()));
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319 scc.Sclass = SC.SCstruct;
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320 scc.Sstruct = struct_calloc();
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321 scc.Sstruct.Sstructalign = 8;
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322 //scc.Sstruct.ptrtype = TYM.TYnptr;
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323 scc.Sstruct.Sflags = STR.STRglobal;
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324
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325 t = type_alloc(TYM.TYstruct);
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326 t.Tflags |= TF.TFsizeunknown | TF.TFforward;
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327 t.Ttag = scc; // structure tag name
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328 assert(t.Tmangle == 0);
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329 t.Tmangle = mTYman.mTYman_d;
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330 t.Tcount++;
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331 scc.Stype = t;
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332 slist_add(scc);
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333 return scc;
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334 }
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335
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336 /******************************************
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337 * Return elem that evaluates to the static frame pointer for function fd.
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338 * If fd is a member function, the returned expression will compute the value
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339 * of fd's 'this' variable.
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340 * This routine is critical for implementing nested functions.
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341 */
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342
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343 elem* getEthis(Loc loc, IRState* irs, Dsymbol fd)
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344 {
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345 elem* ethis;
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346 FuncDeclaration thisfd = irs.getFunc();
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347 Dsymbol fdparent = fd.toParent2();
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348
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349 //printf("getEthis(thisfd = '%s', fd = '%s', fdparent = '%s')\n", thisfd.toChars(), fd.toChars(), fdparent.toChars());
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350 if (fdparent == thisfd)
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351 {
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352 /* Going down one nesting level, i.e. we're calling
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353 * a nested function from its enclosing function.
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354 */
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355 ///version (DMDV2) {
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356 if (irs.sclosure)
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357 ethis = el_var(irs.sclosure);
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358 else
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359 ///}
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360 if (irs.sthis)
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361 {
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362 // We have a 'this' pointer for the current function
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363 ethis = el_var(irs.sthis);
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364
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365 /* If no variables in the current function's frame are
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366 * referenced by nested functions, then we can 'skip'
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367 * adding this frame into the linked list of stack
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368 * frames.
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369 */
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370 version (DMDV2) {
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371 bool cond = (thisfd.closureVars.dim != 0);
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372 } else {
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373 bool cond = thisfd.nestedFrameRef;
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374 }
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375 if (cond)
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376 {
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377 /* Local variables are referenced, can't skip.
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378 * Address of 'this' gives the 'this' for the nested
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379 * function
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380 */
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381 ethis = el_una(OPER.OPaddr, TYM.TYnptr, ethis);
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382 }
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383 }
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384 else
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385 {
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386 /* No 'this' pointer for current function,
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387 * use null if no references to the current function's frame
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388 */
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389 ethis = el_long(TYM.TYnptr, 0);
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390 version (DMDV2) {
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391 bool cond = (thisfd.closureVars.dim != 0);
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392 } else {
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393 bool cond = thisfd.nestedFrameRef;
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394 }
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395 if (cond)
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396 {
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397 /* OPframeptr is an operator that gets the frame pointer
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398 * for the current function, i.e. for the x86 it gets
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399 * the value of EBP
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400 */
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401 ethis.Eoper = OPER.OPframeptr;
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402 }
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403 }
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404 }
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405 else
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406 {
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407 if (!irs.sthis) // if no frame pointer for this function
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408 {
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409 fd.error(loc, "is a nested function and cannot be accessed from %s", irs.getFunc().toChars());
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410 ethis = el_long(TYM.TYnptr, 0); // error recovery
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411 }
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412 else
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413 {
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414 ethis = el_var(irs.sthis);
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415 Dsymbol s = thisfd;
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416 while (fd != s)
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417 {
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418 /* Go up a nesting level, i.e. we need to find the 'this'
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419 * of an enclosing function.
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420 * Our 'enclosing function' may also be an inner class.
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421 */
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422
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423 //printf("\ts = '%s'\n", s.toChars());
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|
424 thisfd = s.isFuncDeclaration();
|
|
|
425 if (thisfd)
|
|
|
426 {
|
|
|
427 /* Enclosing function is a function.
|
|
|
428 */
|
|
|
429 if (fdparent == s.toParent2())
|
|
|
430 break;
|
|
|
431
|
|
|
432 if (thisfd.isNested())
|
|
|
433 {
|
|
|
434 FuncDeclaration p = s.toParent2().isFuncDeclaration();
|
|
|
435 version (DMDV2) {
|
|
|
436 bool cond = !p || p.closureVars.dim;
|
|
|
437 } else {
|
|
|
438 bool cond = !p || p.nestedFrameRef;
|
|
|
439 }
|
|
|
440 if (cond) {
|
|
|
441 ethis = el_una(OPER.OPind, TYM.TYnptr, ethis);
|
|
|
442 }
|
|
|
443 }
|
|
|
444 else if (thisfd.vthis)
|
|
|
445 {
|
|
|
446 ;
|
|
|
447 }
|
|
|
448 else
|
|
|
449 {
|
|
|
450 // Error should have been caught by front end
|
|
|
451 assert(0);
|
|
|
452 }
|
|
|
453 }
|
|
|
454 else
|
|
|
455 {
|
|
|
456 /* Enclosed by an aggregate. That means the current
|
|
|
457 * function must be a member function of that aggregate.
|
|
|
458 */
|
|
|
459 ClassDeclaration cd;
|
|
|
460 StructDeclaration sd;
|
|
|
461 AggregateDeclaration ad = s.isAggregateDeclaration();
|
|
|
462
|
|
|
463 if (!ad)
|
|
|
464 goto Lnoframe;
|
|
|
465
|
|
|
466 cd = s.isClassDeclaration();
|
|
|
467
|
|
|
468 if (cd && fd.isClassDeclaration() && fd.isClassDeclaration().isBaseOf(cd, null))
|
|
|
469 break;
|
|
|
470
|
|
|
471 sd = s.isStructDeclaration();
|
|
|
472
|
|
|
473 if (fd == sd)
|
|
|
474 break;
|
|
|
475
|
|
|
476 if (!ad.isNested() || !ad.vthis)
|
|
|
477 {
|
|
|
478 Lnoframe:
|
|
|
479 irs.getFunc().error(loc, "cannot get frame pointer to %s", fd.toChars());
|
|
|
480 return el_long(TYM.TYnptr, 0); // error recovery
|
|
|
481 }
|
|
|
482
|
|
|
483 ethis = el_bin(OPER.OPadd, TYM.TYnptr, ethis, el_long(TYM.TYint, ad.vthis.offset));
|
|
|
484 ethis = el_una(OPER.OPind, TYM.TYnptr, ethis);
|
|
|
485
|
|
|
486 if (fdparent == s.toParent2())
|
|
|
487 break;
|
|
|
488
|
|
|
489 if (auto fdd = s.toParent2().isFuncDeclaration())
|
|
|
490 {
|
|
|
491 /* Remember that frames for functions that have no
|
|
|
492 * nested references are skipped in the linked list
|
|
|
493 * of frames.
|
|
|
494 */
|
|
|
495 version (DMDV2) {
|
|
|
496 bool cond = (fdd.closureVars.dim != 0);
|
|
|
497 } else {
|
|
|
498 bool cond = fdd.nestedFrameRef;
|
|
|
499 }
|
|
|
500 if (cond) {
|
|
|
501 ethis = el_una(OPER.OPind, TYM.TYnptr, ethis);
|
|
|
502 }
|
|
|
503 break;
|
|
|
504 }
|
|
|
505 }
|
|
|
506 s = s.toParent2();
|
|
|
507 assert(s);
|
|
|
508 }
|
|
|
509 }
|
|
|
510 }
|
|
|
511
|
|
|
512 static if (false) {
|
|
|
513 printf("ethis:\n");
|
|
|
514 elem_print(ethis);
|
|
|
515 printf("\n");
|
|
|
516 }
|
|
|
517
|
|
|
518 return ethis;
|
|
|
519 }
|
|
|
520
|
|
|
521 /*****************************************
|
|
|
522 * Convert array to a pointer to the data.
|
|
|
523 */
|
|
|
524
|
|
|
525 elem* array_toPtr(Type t, elem* e)
|
|
|
526 {
|
|
|
527 //printf("array_toPtr()\n");
|
|
|
528 //elem_print(e);
|
|
|
529 t = t.toBasetype();
|
|
|
530 switch (t.ty)
|
|
|
531 {
|
|
|
532 case TY.Tpointer:
|
|
|
533 break;
|
|
|
534
|
|
|
535 case TY.Tarray:
|
|
|
536 case TY.Tdelegate:
|
|
|
537 if (e.Eoper == OPER.OPcomma)
|
|
|
538 {
|
|
|
539 e.Ety = TYM.TYnptr;
|
|
|
540 e.E2() = array_toPtr(t, e.E2);
|
|
|
541 }
|
|
|
542 else if (e.Eoper == OPER.OPpair)
|
|
|
543 {
|
|
|
544 e.Eoper = OPER.OPcomma;
|
|
|
545 e.Ety = TYM.TYnptr;
|
|
|
546 }
|
|
|
547 else
|
|
|
548 {
|
|
|
549 static if (true) {
|
|
|
550 e = el_una(OPER.OPmsw, TYM.TYnptr, e);
|
|
|
551 } else {
|
|
|
552 e = el_una(OPER.OPaddr, TYM.TYnptr, e);
|
|
|
553 e = el_bin(OPER.OPadd, TYM.TYnptr, e, el_long(TYM.TYint, 4));
|
|
|
554 e = el_una(OPER.OPind, TYM.TYnptr, e);
|
|
|
555 }
|
|
|
556 }
|
|
|
557 break;
|
|
|
558
|
|
|
559 case TY.Tsarray:
|
|
|
560 e = el_una(OPER.OPaddr, TYM.TYnptr, e);
|
|
|
561 break;
|
|
|
562
|
|
|
563 default:
|
|
|
564 ///t.print();
|
|
|
565 assert(0);
|
|
|
566 }
|
|
|
567 return e;
|
|
|
568 }
|
|
|
569
|
|
|
570 /*******************************************
|
|
|
571 * Take address of an elem.
|
|
|
572 */
|
|
|
573
|
|
|
574 elem* addressElem(elem* e, Type t)
|
|
|
575 {
|
|
|
576 elem** pe;
|
|
|
577
|
|
|
578 //printf("addressElem()\n");
|
|
|
579
|
|
|
580 for (pe = &e; (*pe).Eoper == OPER.OPcomma; pe = &(*pe).E2()) {
|
|
|
581 ;
|
|
|
582 }
|
|
|
583
|
|
|
584 if ((*pe).Eoper != OPER.OPvar && (*pe).Eoper != OPER.OPind)
|
|
|
585 {
|
|
|
586 Symbol* stmp;
|
|
|
587 elem* eeq;
|
|
|
588 elem* ee = *pe;
|
|
|
589 type* tx;
|
|
|
590
|
|
|
591 // Convert to ((tmp=ee),tmp)
|
|
|
592 TY ty;
|
|
|
593 if (t && ((ty = t.toBasetype().ty) == TY.Tstruct || ty == TY.Tsarray))
|
|
|
594 tx = t.toCtype();
|
|
|
595 else
|
|
|
596 tx = type_fake(ee.Ety);
|
|
|
597 stmp = symbol_genauto(tx);
|
|
|
598 eeq = el_bin(OPER.OPeq,ee.Ety,el_var(stmp),ee);
|
|
|
599
|
|
|
600 if (tybasic(ee.Ety) == TYM.TYstruct)
|
|
|
601 {
|
|
|
602 eeq.Eoper = OPER.OPstreq;
|
|
|
603 eeq.Enumbytes = ee.Enumbytes;
|
|
|
604 }
|
|
|
605 else if (tybasic(ee.Ety) == TYM.TYarray)
|
|
|
606 {
|
|
|
607 eeq.Eoper = OPER.OPstreq;
|
|
|
608 eeq.Ety = TYM.TYstruct;
|
|
|
609 eeq.Ejty = cast(ubyte)eeq.Ety;
|
|
|
610 eeq.Enumbytes = cast(uint)t.size();
|
|
|
611 }
|
|
|
612 *pe = el_bin(OPER.OPcomma, ee.Ety, eeq, el_var(stmp));
|
|
|
613 }
|
|
|
614
|
|
|
615 e = el_una(OPER.OPaddr, TYM.TYnptr, e);
|
|
|
616 return e;
|
|
|
617 }
|
|
|
618
|
|
|
619 /*******************************************
|
|
|
620 * Convert intrinsic function to operator.
|
|
|
621 * Returns that operator, -1 if not an intrinsic function.
|
|
|
622 */
|
|
|
623
|
|
|
624 extern (C++) extern int intrinsic_op(char* name);
|
|
|
625
|
|
|
626 OPER intrinsic_oper(const(char)* name)
|
|
|
627 {
|
|
|
628 int result = intrinsic_op(cast(char*)name);
|
|
|
629 if (result == -1) return OPER.OPMAX;
|
|
|
630 return cast(OPER)result;
|
|
|
631 }
|
|
|
632
|
|
|
633 /**************************************
|
|
|
634 */
|
|
|
635
|
|
|
636 elem* Dsymbol_toElem(Dsymbol s, IRState *irs)
|
|
|
637 {
|
|
|
638 elem *e = null;
|
|
|
639 Symbol* sp;
|
|
|
640 AttribDeclaration ad;
|
|
|
641 VarDeclaration vd;
|
|
|
642 ClassDeclaration cd;
|
|
|
643 StructDeclaration sd;
|
|
|
644 FuncDeclaration fd;
|
|
|
645 TemplateMixin tm;
|
|
|
646 TupleDeclaration td;
|
|
|
647 TypedefDeclaration tyd;
|
|
|
648
|
|
|
649 //printf("Dsymbol_toElem() %s\n", s.toChars());
|
|
|
650 ad = s.isAttribDeclaration();
|
|
|
651 if (ad)
|
|
|
652 {
|
|
|
653 Array decl = ad.include(null, null);
|
|
|
654 if (decl && decl.dim)
|
|
|
655 {
|
|
|
656 for (size_t i = 0; i < decl.dim; i++)
|
|
|
657 {
|
|
|
658 s = cast(Dsymbol)decl.data[i];
|
|
|
659 e = el_combine(e, Dsymbol_toElem(s, irs));
|
|
|
660 }
|
|
|
661 }
|
|
|
662 }
|
|
|
663 else if ((vd = s.isVarDeclaration()) !is null)
|
|
|
664 {
|
|
|
665 s = s.toAlias();
|
|
|
666 if (s != vd)
|
|
|
667 return Dsymbol_toElem(s, irs);
|
|
|
668 if (vd.isStatic() || vd.storage_class & (STC.STCextern | STC.STCtls | STC.STCgshared))
|
|
|
669 vd.toObjFile(0);
|
|
|
670 else
|
|
|
671 {
|
|
|
672 sp = s.toSymbol();
|
|
|
673 symbol_add(sp);
|
|
|
674 //printf("\tadding symbol '%s'\n", sp.Sident);
|
|
|
675 if (vd.init)
|
|
|
676 {
|
|
|
677 ExpInitializer ie = vd.init.isExpInitializer();
|
|
|
678 if (ie) {
|
|
|
679 e = ie.exp.toElem(irs);
|
|
|
680 }
|
|
|
681 }
|
|
|
682 }
|
|
|
683 }
|
|
|
684 else if ((cd = s.isClassDeclaration()) !is null)
|
|
|
685 {
|
|
|
686 irs.deferToObj.push(cast(void*)s);
|
|
|
687 }
|
|
|
688 else if ((sd = s.isStructDeclaration()) !is null)
|
|
|
689 {
|
|
|
690 irs.deferToObj.push(cast(void*)sd);
|
|
|
691 }
|
|
|
692 else if ((fd = s.isFuncDeclaration()) !is null)
|
|
|
693 {
|
|
|
694 //printf("function %s\n", fd.toChars());
|
|
|
695 irs.deferToObj.push(cast(void*)fd);
|
|
|
696 }
|
|
|
697 else if ((tm = s.isTemplateMixin()) !is null)
|
|
|
698 {
|
|
|
699 //printf("%s\n", tm.toChars());
|
|
|
700 if (tm.members)
|
|
|
701 {
|
|
|
702 for (size_t i = 0; i < tm.members.dim; i++)
|
|
|
703 {
|
|
|
704 Dsymbol sm = cast(Dsymbol)tm.members.data[i];
|
|
|
705 e = el_combine(e, Dsymbol_toElem(sm, irs));
|
|
|
706 }
|
|
|
707 }
|
|
|
708 }
|
|
|
709 else if ((td = s.isTupleDeclaration()) !is null)
|
|
|
710 {
|
|
|
711 for (size_t i = 0; i < td.objects.dim; i++)
|
|
|
712 {
|
|
|
713 Object o = cast(Object)td.objects.data[i];
|
|
|
714 ///if (o.dyncast() == DYNCAST_EXPRESSION)
|
|
|
715 if (Expression eo = cast(Expression)o)
|
|
|
716 {
|
|
|
717 if (eo.op == TOK.TOKdsymbol)
|
|
|
718 {
|
|
|
719 DsymbolExp se = cast(DsymbolExp)eo;
|
|
|
720 e = el_combine(e, Dsymbol_toElem(se.s, irs));
|
|
|
721 }
|
|
|
722 }
|
|
|
723 }
|
|
|
724 }
|
|
|
725 else if ((tyd = s.isTypedefDeclaration()) !is null)
|
|
|
726 {
|
|
|
727 irs.deferToObj.push(cast(void*)tyd);
|
|
|
728 }
|
|
|
729
|
|
|
730 return e;
|
|
|
731 }
|
|
|
732
|
|
|
733 /**************************************
|
|
|
734 * Given an expression e that is an array,
|
|
|
735 * determine and set the 'length' variable.
|
|
|
736 * Input:
|
|
|
737 * lengthVar Symbol of 'length' variable
|
|
|
738 * &e expression that is the array
|
|
|
739 * t1 Type of the array
|
|
|
740 * Output:
|
|
|
741 * e is rewritten to avoid side effects
|
|
|
742 * Returns:
|
|
|
743 * expression that initializes 'length'
|
|
|
744 */
|
|
|
745
|
|
|
746 elem* resolveLengthVar(VarDeclaration lengthVar, elem** pe, Type t1)
|
|
|
747 {
|
|
|
748 //printf("resolveLengthVar()\n");
|
|
|
749 elem* einit = null;
|
|
|
750
|
|
|
751 if (lengthVar && !(lengthVar.storage_class & STC.STCconst))
|
|
|
752 {
|
|
|
753 elem* elength;
|
|
|
754 Symbol* slength;
|
|
|
755
|
|
|
756 if (t1.ty == TY.Tsarray)
|
|
|
757 {
|
|
|
758 TypeSArray tsa = cast(TypeSArray)t1;
|
|
|
759 long length = tsa.dim.toInteger();
|
|
|
760
|
|
|
761 elength = el_long(TYM.TYuint, length);
|
|
|
762 goto L3;
|
|
|
763 }
|
|
|
764 else if (t1.ty == TY.Tarray)
|
|
|
765 {
|
|
|
766 elength = *pe;
|
|
|
767 *pe = el_same(&elength);
|
|
|
768 elength = el_una(OPER.OP64_32, TYM.TYuint, elength);
|
|
|
769
|
|
|
770 L3:
|
|
|
771 slength = lengthVar.toSymbol();
|
|
|
772 //symbol_add(slength);
|
|
|
773
|
|
|
774 einit = el_bin(OPER.OPeq, TYM.TYuint, el_var(slength), elength);
|
|
|
775 }
|
|
|
776 }
|
|
|
777 return einit;
|
|
|
778 }
|
|
|
779
|
|
|
780 /*******************************************
|
|
|
781 * Set an array pointed to by eptr to evalue:
|
|
|
782 * eptr[0..edim] = evalue;
|
|
|
783 * Input:
|
|
|
784 * eptr where to write the data to
|
|
|
785 * evalue value to write
|
|
|
786 * edim number of times to write evalue to eptr[]
|
|
|
787 * tb type of evalue
|
|
|
788 */
|
|
|
789
|
|
|
790 elem* setArray(elem* eptr, elem* edim, Type tb, elem* evalue, IRState* irs, int op)
|
|
|
791 {
|
|
|
792 int r;
|
|
|
793 elem* e;
|
|
|
794 int sz = cast(int)tb.size();
|
|
|
795
|
|
|
796 if (tb.ty == TY.Tfloat80 || tb.ty == TY.Timaginary80)
|
|
|
797 r = RTLSYM.RTLSYM_MEMSET80;
|
|
|
798 else if (tb.ty == TY.Tcomplex80)
|
|
|
799 r = RTLSYM.RTLSYM_MEMSET160;
|
|
|
800 else if (tb.ty == TY.Tcomplex64)
|
|
|
801 r = RTLSYM.RTLSYM_MEMSET128;
|
|
|
802 else
|
|
|
803 {
|
|
|
804 switch (sz)
|
|
|
805 {
|
|
|
806 case 1: r = RTLSYM.RTLSYM_MEMSET8; break;
|
|
|
807 case 2: r = RTLSYM.RTLSYM_MEMSET16; break;
|
|
|
808 case 4: r = RTLSYM.RTLSYM_MEMSET32; break;
|
|
|
809 case 8: r = RTLSYM.RTLSYM_MEMSET64; break;
|
|
|
810 default: r = RTLSYM.RTLSYM_MEMSETN; break;
|
|
|
811 }
|
|
|
812
|
|
|
813 /* Determine if we need to do postblit
|
|
|
814 */
|
|
|
815 if (op != TOK.TOKblit)
|
|
|
816 {
|
|
|
817 StructDeclaration sd = needsPostblit(tb);
|
|
|
818 if (sd)
|
|
|
819 {
|
|
|
820 /* Need to do postblit.
|
|
|
821 * void *_d_arraysetassign(void *p, void *value, int dim, TypeInfo ti);
|
|
|
822 */
|
|
|
823 r = (op == TOK.TOKconstruct) ? RTLSYM.RTLSYM_ARRAYSETCTOR : RTLSYM.RTLSYM_ARRAYSETASSIGN;
|
|
|
824 evalue = el_una(OPER.OPaddr, TYM.TYnptr, evalue);
|
|
|
825 Expression ti = tb.getTypeInfo(null);
|
|
|
826 elem* eti = ti.toElem(irs);
|
|
|
827 e = el_params(eti, edim, evalue, eptr, null);
|
|
|
828 e = el_bin(OPER.OPcall, TYM.TYnptr, el_var(rtlsym[r]), e);
|
|
|
829 return e;
|
|
|
830 }
|
|
|
831 }
|
|
|
832
|
|
|
833 if (r == RTLSYM.RTLSYM_MEMSETN)
|
|
|
834 {
|
|
|
835 // void *_memsetn(void *p, void *value, int dim, int sizelem)
|
|
|
836 evalue = el_una(OPER.OPaddr, TYM.TYnptr, evalue);
|
|
|
837 elem *esz = el_long(TYM.TYint, sz);
|
|
|
838 e = el_params(esz, edim, evalue, eptr, null);
|
|
|
839 e = el_bin(OPER.OPcall, TYM.TYnptr, el_var(rtlsym[r]), e);
|
|
|
840 return e;
|
|
|
841 }
|
|
|
842 }
|
|
|
843 if (sz > 1 && sz <= 8 && evalue.Eoper == OPER.OPconst && el_allbits(evalue, 0))
|
|
|
844 {
|
|
|
845 r = RTLSYM.RTLSYM_MEMSET8;
|
|
|
846 edim = el_bin(OPER.OPmul, TYM.TYuint, edim, el_long(TYM.TYuint, sz));
|
|
|
847 }
|
|
|
848
|
|
|
849 if (tybasic(evalue.Ety) == TYM.TYstruct)
|
|
|
850 {
|
|
|
851 evalue = el_una(OPER.OPstrpar, TYM.TYstruct, evalue);
|
|
|
852 evalue.Enumbytes = evalue.E1.Enumbytes;
|
|
|
853 assert(evalue.Enumbytes);
|
|
|
854 }
|
|
|
855
|
|
|
856 // Be careful about parameter side effect ordering
|
|
|
857 if (r == RTLSYM.RTLSYM_MEMSET8)
|
|
|
858 {
|
|
|
859 e = el_param(edim, evalue);
|
|
|
860 e = el_bin(OPER.OPmemset, TYM.TYnptr, eptr, e);
|
|
|
861 }
|
|
|
862 else
|
|
|
863 {
|
|
|
864 e = el_params(edim, evalue, eptr, null);
|
|
|
865 e = el_bin(OPER.OPcall, TYM.TYnptr, el_var(rtlsym[r]), e);
|
|
|
866 }
|
|
|
867 return e;
|
|
|
868 }
|
|
|
869
|
|
|
870 /*************************
|
|
|
871 * Initialize the hidden aggregate member, vthis, with
|
|
|
872 * the context pointer.
|
|
|
873 * Returns:
|
|
|
874 * *(ey + ad.vthis.offset) = this;
|
|
|
875 */
|
|
|
876 version (DMDV2) {
|
|
|
877 elem* setEthis(Loc loc, IRState* irs, elem* ey, AggregateDeclaration ad)
|
|
|
878 {
|
|
|
879 elem* ethis;
|
|
|
880 FuncDeclaration thisfd = irs.getFunc();
|
|
|
881 int offset = 0;
|
|
|
882 Dsymbol cdp = ad.toParent2(); // class/func we're nested in
|
|
|
883
|
|
|
884 //printf("setEthis(ad = %s, cdp = %s, thisfd = %s)\n", ad.toChars(), cdp.toChars(), thisfd.toChars());
|
|
|
885
|
|
|
886 if (cdp is thisfd)
|
|
|
887 {
|
|
|
888 /* Class we're new'ing is a local class in this function:
|
|
|
889 * void thisfd() { class ad { } }
|
|
|
890 */
|
|
|
891 if (irs.sclosure)
|
|
|
892 ethis = el_var(irs.sclosure);
|
|
|
893 else if (irs.sthis)
|
|
|
894 {
|
|
|
895 /// version (DMDV2) {
|
|
|
896 if (thisfd.closureVars.dim)
|
|
|
897 /// } else {
|
|
|
898 /// if (thisfd.nestedFrameRef)
|
|
|
899 /// }
|
|
|
900 {
|
|
|
901 ethis = el_ptr(irs.sthis);
|
|
|
902 }
|
|
|
903 else
|
|
|
904 ethis = el_var(irs.sthis);
|
|
|
905 }
|
|
|
906 else
|
|
|
907 {
|
|
|
908 ethis = el_long(TYM.TYnptr, 0);
|
|
|
909 /// version (DMDV2) {
|
|
|
910 if (thisfd.closureVars.dim)
|
|
|
911 /// } else {
|
|
|
912 /// if (thisfd.nestedFrameRef)
|
|
|
913 /// }
|
|
|
914 {
|
|
|
915 ethis.Eoper = OPER.OPframeptr;
|
|
|
916 }
|
|
|
917 }
|
|
|
918 }
|
|
|
919 else if (thisfd.vthis && (
|
|
|
920 cdp == thisfd.toParent2() || (
|
|
|
921 cdp.isClassDeclaration() && cdp.isClassDeclaration().isBaseOf(thisfd.toParent2().isClassDeclaration(), &offset)
|
|
|
922 )
|
|
|
923 )
|
|
|
924 )
|
|
|
925 {
|
|
|
926 /* Class we're new'ing is at the same level as thisfd
|
|
|
927 */
|
|
|
928 assert(offset == 0); // BUG: should handle this case
|
|
|
929 ethis = el_var(irs.sthis);
|
|
|
930 }
|
|
|
931 else
|
|
|
932 {
|
|
|
933 ethis = getEthis(loc, irs, ad.toParent2());
|
|
|
934 ethis = el_una(OPER.OPaddr, TYM.TYnptr, ethis);
|
|
|
935 }
|
|
|
936
|
|
|
937 ey = el_bin(OPER.OPadd, TYM.TYnptr, ey, el_long(TYM.TYint, ad.vthis.offset));
|
|
|
938 ey = el_una(OPER.OPind, TYM.TYnptr, ey);
|
|
|
939 ey = el_bin(OPER.OPeq, TYM.TYnptr, ey, ethis);
|
|
|
940
|
|
|
941 return ey;
|
|
|
942 }
|
|
|
943 }
|
|
|
944
|
|
|
945 /********************************************
|
|
|
946 * Determine if t is an array of structs that need a postblit.
|
|
|
947 */
|
|
|
948 StructDeclaration needsPostblit(Type t)
|
|
|
949 {
|
|
|
950 t = t.toBasetype();
|
|
|
951
|
|
|
952 while (t.ty == TY.Tsarray)
|
|
|
953 t = t.nextOf().toBasetype();
|
|
|
954
|
|
|
955 if (t.ty == TY.Tstruct)
|
|
|
956 {
|
|
|
957 StructDeclaration sd = (cast(TypeStruct)t).sym;
|
|
|
958 if (sd.postblit)
|
|
|
959 return sd;
|
|
|
960 }
|
|
|
961
|
|
|
962 return null;
|
|
|
963 }
|
|
|
964
|
|
|
965 /*****************************************
|
|
|
966 * Convert array to a dynamic array.
|
|
|
967 */
|
|
|
968
|
|
|
969 elem* array_toDarray(Type t, elem* e)
|
|
|
970 {
|
|
|
971 uint dim;
|
|
|
972 elem* ef = null;
|
|
|
973 elem* ex;
|
|
|
974
|
|
|
975 //printf("array_toDarray(t = %s)\n", t.toChars());
|
|
|
976 //elem_print(e);
|
|
|
977 t = t.toBasetype();
|
|
|
978 switch (t.ty)
|
|
|
979 {
|
|
|
980 case TY.Tarray:
|
|
|
981 break;
|
|
|
982
|
|
|
983 case TY.Tsarray:
|
|
|
984 e = el_una(OPER.OPaddr, TYM.TYnptr, e);
|
|
|
985 dim = cast(uint)(cast(TypeSArray)t).dim.toInteger();
|
|
|
986 e = el_pair(TYM.TYullong, el_long(TYM.TYint, dim), e);
|
|
|
987 break;
|
|
|
988
|
|
|
989 default:
|
|
|
990 L1:
|
|
|
991 switch (e.Eoper)
|
|
|
992 {
|
|
|
993 case OPER.OPconst:
|
|
|
994 {
|
|
|
995 size_t len = tysize[tybasic(e.Ety)];
|
|
|
996 elem* es = el_calloc();
|
|
|
997 es.Eoper = OPER.OPstring;
|
|
|
998
|
|
|
999 // Match MEM_PH_FREE for OPstring in ztc\el.c
|
|
|
1000 es.EV.ss.Vstring = cast(char*)malloc(len); ///
|
|
|
1001 memcpy(es.EV.ss.Vstring, &e.EV, len);
|
|
|
1002
|
|
|
1003 es.EV.ss.Vstrlen = len;
|
|
|
1004 es.Ety = TYM.TYnptr;
|
|
|
1005 e = es;
|
|
|
1006 break;
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 case OPER.OPvar:
|
|
|
1010 e = el_una(OPER.OPaddr, TYM.TYnptr, e);
|
|
|
1011 break;
|
|
|
1012
|
|
|
1013 case OPER.OPcomma:
|
|
|
1014 ef = el_combine(ef, e.E1);
|
|
|
1015 ex = e;
|
|
|
1016 e = e.E2;
|
|
|
1017 ex.E1() = null;
|
|
|
1018 ex.E2() = null;
|
|
|
1019 el_free(ex);
|
|
|
1020 goto L1;
|
|
|
1021
|
|
|
1022 case OPER.OPind:
|
|
|
1023 ex = e;
|
|
|
1024 e = e.E1;
|
|
|
1025 ex.E1() = null;
|
|
|
1026 ex.E2() = null;
|
|
|
1027 el_free(ex);
|
|
|
1028 break;
|
|
|
1029
|
|
|
1030 default:
|
|
|
1031 {
|
|
|
1032 // Copy expression to a variable and take the
|
|
|
1033 // address of that variable.
|
|
|
1034 Symbol* stmp;
|
|
|
1035 tym_t ty = tybasic(e.Ety);
|
|
|
1036
|
|
|
1037 if (ty == TYM.TYstruct)
|
|
|
1038 {
|
|
|
1039 if (e.Enumbytes == 4)
|
|
|
1040 ty = TYM.TYint;
|
|
|
1041 else if (e.Enumbytes == 8)
|
|
|
1042 ty = TYM.TYllong;
|
|
|
1043 }
|
|
|
1044 e.Ety = ty;
|
|
|
1045 stmp = symbol_genauto(type_fake(ty));
|
|
|
1046 e = el_bin(OPER.OPeq, e.Ety, el_var(stmp), e);
|
|
|
1047 e = el_bin(OPER.OPcomma, TYM.TYnptr, e, el_una(OPER.OPaddr, TYM.TYnptr, el_var(stmp)));
|
|
|
1048 break;
|
|
|
1049 }
|
|
|
1050 }
|
|
|
1051 dim = 1;
|
|
|
1052 e = el_pair(TYM.TYullong, el_long(TYM.TYint, dim), e);
|
|
|
1053 break;
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 return el_combine(ef, e);
|
|
|
1057 }
|
|
|
1058
|
|
|
1059 elem* sarray_toDarray(Loc loc, Type tfrom, Type tto, elem* e)
|
|
|
1060 {
|
|
|
1061 //printf("sarray_toDarray()\n");
|
|
|
1062 //elem_print(e);
|
|
|
1063
|
|
|
1064 elem* elen;
|
|
|
1065 uint dim = cast(uint)(cast(TypeSArray)tfrom).dim.toInteger();
|
|
|
1066
|
|
|
1067 if (tto)
|
|
|
1068 {
|
|
|
1069 uint fsize = cast(uint)tfrom.nextOf().size();
|
|
|
1070 uint tsize = cast(uint)tto.nextOf().size();
|
|
|
1071
|
|
|
1072 if ((dim * fsize) % tsize != 0)
|
|
|
1073 {
|
|
|
1074 Lerr:
|
|
|
1075 error(loc, "cannot cast %s to %s since sizes don't line up", tfrom.toChars(), tto.toChars());
|
|
|
1076 }
|
|
|
1077 dim = (dim * fsize) / tsize;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 L1:
|
|
|
1081 elen = el_long(TYM.TYint, dim);
|
|
|
1082 e = el_una(OPER.OPaddr, TYM.TYnptr, e);
|
|
|
1083 e = el_pair(TYM.TYullong, elen, e);
|
|
|
1084 return e;
|
|
|
1085 }
|
|
|
1086
|
|
|
1087 elem* eval_Darray(IRState* irs, Expression e)
|
|
|
1088 {
|
|
|
1089 elem* ex = e.toElem(irs);
|
|
|
1090 return array_toDarray(e.type, ex);
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 /***********************************************
|
|
|
1094 * Generate code to set index into scope table.
|
|
|
1095 */
|
|
|
1096
|
|
|
1097 void setScopeIndex(Blockx* blx, block* b, int scope_index)
|
|
|
1098 {
|
|
|
1099 version (SEH) {
|
|
|
1100 block_appendexp(b, nteh_setScopeTableIndex(blx, scope_index));
|
|
|
1101 }
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 /****************************************
|
|
|
1105 * Create a static symbol we can hang DT initializers onto.
|
|
|
1106 */
|
|
|
1107
|
|
|
1108 Symbol* static_sym()
|
|
|
1109 {
|
|
|
1110 Symbol* s;
|
|
|
1111 type* t;
|
|
|
1112
|
|
|
1113 t = type_alloc(TYint);
|
|
|
1114 t.Tcount++;
|
|
|
1115 s = symbol_calloc("internal");
|
|
|
1116 s.Sclass = SCstatic;
|
|
|
1117 s.Sfl = FLextern;
|
|
|
1118 s.Sflags |= SFLnodebug;
|
|
|
1119 s.Stype = t;
|
|
|
1120 version (ELFOBJ_OR_MACHOBJ) {
|
|
|
1121 s.Sseg = DATA;
|
|
|
1122 }
|
|
|
1123 slist_add(s);
|
|
|
1124 return s;
|
|
|
1125 }
|
|
|
1126
|
|
|
1127 /**************************************
|
|
|
1128 * Convert label to block.
|
|
|
1129 */
|
|
|
1130
|
|
|
1131 block* labelToBlock(Loc loc, Blockx *blx, LabelDsymbol label)
|
|
|
1132 {
|
|
|
1133 LabelStatement s;
|
|
|
1134
|
|
|
1135 if (!label.statement)
|
|
|
1136 {
|
|
|
1137 error(loc, "undefined label %s", label.toChars());
|
|
|
1138 return null;
|
|
|
1139 }
|
|
|
1140
|
|
|
1141 s = label.statement;
|
|
|
1142 if (!s.lblock)
|
|
|
1143 {
|
|
|
1144 s.lblock = block_calloc(blx);
|
|
|
1145 if (s.isReturnLabel)
|
|
|
1146 s.lblock.Btry = null;
|
|
|
1147 }
|
|
|
1148 return s.lblock;
|
|
|
1149 } |
