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annotate dmd/AndExp.d @ 130:60bb0fe4563e

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dmdfe 2.037 first main iteration
author Eldar Insafutdinov <e.insafutdinov@gmail.com>
date Thu, 09 Sep 2010 22:51:44 +0100
parents 9e39c7de8438
children e3afd1303184
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1 module dmd.AndExp;
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2
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3 import dmd.common;
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4 import dmd.Expression;
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5 import dmd.Identifier;
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6 import dmd.InterState;
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7 import dmd.OutBuffer;
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8 import dmd.Loc;
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9 import dmd.Scope;
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10 import dmd.IntRange;
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11 import dmd.IRState;
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12 import dmd.BinExp;
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13 import dmd.TOK;
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14 import dmd.ArrayTypes;
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15 import dmd.TY;
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16 import dmd.Type;
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17 import dmd.Id;
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18 import dmd.Global;
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19
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20 import dmd.backend.elem;
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21 import dmd.backend.Util;
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22 import dmd.backend.OPER;
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23 import dmd.expression.Util;
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24 import dmd.expression.And;
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25
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26 class AndExp : BinExp
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27 {
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28 this(Loc loc, Expression e1, Expression e2)
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29 {
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30 super(loc, TOK.TOKand, AndExp.sizeof, e1, e2);
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31 }
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32
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33 override Expression semantic(Scope sc)
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34 {
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35 Expression e;
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36
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37 if (!type)
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38 {
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39 BinExp.semanticp(sc);
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40 e = op_overload(sc);
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41
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42 if (e)
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43 return e;
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44
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45 if (e1.type.toBasetype().ty == TY.Tbool && e2.type.toBasetype().ty == TY.Tbool)
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46 {
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47 type = e1.type;
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48 e = this;
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49 }
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50 else
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51 {
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52 typeCombine(sc);
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53 if (!e1.isArrayOperand())
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54 e1.checkIntegral();
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55 if (!e2.isArrayOperand())
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56 e2.checkIntegral();
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57 }
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58 }
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59 return this;
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60 }
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61
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62 override Expression optimize(int result)
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63 {
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64 Expression e;
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65
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66 e1 = e1.optimize(result);
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67 e2 = e2.optimize(result);
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68 if (e1.isConst() == 1 && e2.isConst() == 1)
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69 e = And(type, e1, e2);
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70 else
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71 e = this;
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72
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73 return e;
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74 }
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75
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76 override Expression interpret(InterState istate)
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77 {
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78 return interpretCommon(istate, &And);
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79 }
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81 override void buildArrayIdent(OutBuffer buf, Expressions arguments)
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82 {
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83 Exp_buildArrayIdent(buf, arguments, "And");
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84 }
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85
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86 override Expression buildArrayLoop(Parameters fparams)
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87 {
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88 return Exp_buildArrayLoop!(typeof(this))(fparams);
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89 }
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91 override IntRange getIntRange()
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92 {
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93 IntRange ir;
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94 IntRange ir1 = e1.getIntRange();
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95 IntRange ir2 = e2.getIntRange();
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96
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97 ir.imin = ir1.imin;
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98 if (ir2.imin < ir.imin)
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99 ir.imin = ir2.imin;
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100
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101 ir.imax = ir1.imax;
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102 if (ir2.imax > ir.imax)
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103 ir.imax = ir2.imax;
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104
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105 ulong u;
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106
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107 u = getMask(ir1.imax);
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108 ir.imin &= u;
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109 ir.imax &= u;
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110
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111 u = getMask(ir2.imax);
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112 ir.imin &= u;
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113 ir.imax &= u;
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114
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115 ir.imin &= type.sizemask();
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116 ir.imax &= type.sizemask();
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117
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118 //printf("AndExp: imin = x%llx, imax = x%llx\n", ir.imin, ir.imax);
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119 //e1.dump(0);
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120
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121 return ir;
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122 }
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124 override bool isCommutative()
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125 {
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126 return true;
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127 }
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128
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129 override Identifier opId()
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130 {
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131 return Id.iand;
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132 }
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133
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134 override Identifier opId_r()
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135 {
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136 return Id.iand_r;
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137 }
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138
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139 override elem* toElem(IRState* irs)
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140 {
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141 return toElemBin(irs, OPER.OPand);
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142 }
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143 }
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