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annotate gen/structs.cpp @ 1228:79758fd2f48a

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Added Doxygen file. Completely seperated type and symbol generation. Should fix a lot of bugs, but is not yet 100% complete.
author Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
date Wed, 15 Apr 2009 20:06:25 +0200
parents ba9d6292572a
children 212ec2d9d176
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include <algorithm>
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2
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3 #include "gen/llvm.h"
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4
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5 #include "mtype.h"
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6 #include "aggregate.h"
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7 #include "init.h"
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8 #include "declaration.h"
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9
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10 #include "gen/irstate.h"
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11 #include "gen/tollvm.h"
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12 #include "gen/llvmhelpers.h"
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13 #include "gen/arrays.h"
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14 #include "gen/logger.h"
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15 #include "gen/structs.h"
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16 #include "gen/dvalue.h"
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17 #include "gen/functions.h"
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18 #include "gen/utils.h"
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19
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20 #include "ir/irstruct.h"
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21 #include "ir/irtypestruct.h"
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af7a6faf9406 Fix #153. Factor out common code in StructLiteralExp::to(Const)Elem.
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23 //////////////////////////////////////////////////////////////////////////////////////////
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24
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25 LLValue* DtoIndexStruct(LLValue* src, StructDeclaration* sd, VarDeclaration* vd)
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26 {
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27 Logger::println("indexing struct field %s:", vd->toPrettyChars());
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28 LOG_SCOPE;
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29
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30 DtoResolveStruct(sd);
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31
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32 // vd must be a field
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33 IrField* field = vd->ir.irField;
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34 assert(field);
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35
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36 // get the start pointer
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37 const LLType* st = getPtrToType(DtoType(sd->type));
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39 // cast to the formal struct type
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40 src = DtoBitCast(src, st);
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42 // gep to the index
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43 LLValue* val = DtoGEPi(src, 0, field->index);
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45 // do we need to offset further? (union area)
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46 if (field->unionOffset)
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47 {
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48 // cast to void*
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49 val = DtoBitCast(val, getVoidPtrType());
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50 // offset
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51 val = DtoGEPi1(val, field->unionOffset);
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52 }
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53
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54 // cast it to the right type
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55 val = DtoBitCast(val, getPtrToType(DtoType(vd->type)));
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57 if (Logger::enabled())
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58 Logger::cout() << "value: " << *val << '\n';
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60 return val;
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61 }
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62
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63 //////////////////////////////////////////////////////////////////////////////////////////
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65 void DtoResolveStruct(StructDeclaration* sd)
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66 {
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67 // don't do anything if already been here
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68 if (sd->ir.resolved) return;
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69 // make sure above works :P
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70 sd->ir.resolved = true;
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72 // log what we're doing
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73 Logger::println("Resolving struct type: %s (%s)", sd->toChars(), sd->locToChars());
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74 LOG_SCOPE;
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75
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76 // make sure type exists
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77 DtoType(sd->type);
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79 // create the IrStruct
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80 IrStruct* irstruct = new IrStruct(sd);
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81 sd->ir.irStruct = irstruct;
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83 // emit the initZ symbol
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84 LLGlobalVariable* initZ = irstruct->getInitSymbol();
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86 // perform definition
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87 if (mustDefineSymbol(sd))
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88 {
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89 // set initZ initializer
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90 initZ->setInitializer(irstruct->getDefaultInit());
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91 }
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92
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93 // emit members
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94 if (sd->members)
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95 {
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96 ArrayIter<Dsymbol> it(*sd->members);
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97 while (!it.done())
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98 {
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99 Dsymbol* member = it.get();
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100 if (member)
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101 member->codegen(Type::sir);
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102 it.next();
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103 }
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104 }
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105
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106 // emit typeinfo
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107 DtoTypeInfoOf(sd->type);
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108 }
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109
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110 //////////////////////////////////////////////////////////////////////////////////////////
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111 //////////////////////////// D STRUCT UTILITIES ////////////////////////////////////
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112 //////////////////////////////////////////////////////////////////////////////////////////
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113
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114 LLValue* DtoStructEquals(TOK op, DValue* lhs, DValue* rhs)
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115 {
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116 Type* t = lhs->getType()->toBasetype();
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117 assert(t->ty == Tstruct);
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118
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119 // set predicate
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120 llvm::ICmpInst::Predicate cmpop;
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121 if (op == TOKequal || op == TOKidentity)
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122 cmpop = llvm::ICmpInst::ICMP_EQ;
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123 else
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124 cmpop = llvm::ICmpInst::ICMP_NE;
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125
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126 // call memcmp
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127 size_t sz = getTypePaddedSize(DtoType(t));
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128 LLValue* val = DtoMemCmp(lhs->getRVal(), rhs->getRVal(), DtoConstSize_t(sz));
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129 return gIR->ir->CreateICmp(cmpop, val, LLConstantInt::get(val->getType(), 0, false), "tmp");
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130 }