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annotate ir/irstruct.cpp @ 800:d14e4594c7d7

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Changed aggregate field initializers to be created lazily, fixes problem with static void arrays in aggregates.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Sat, 29 Nov 2008 18:28:17 +0100
parents 340acf1535d0
children 28ce72c60a21
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rev   line source
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1 #include "gen/llvm.h"
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2
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3 #include "mtype.h"
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4 #include "aggregate.h"
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5 #include "declaration.h"
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6 #include "init.h"
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7
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8 #include "ir/irstruct.h"
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5c17f81fc1c1 [svn r173] moved IR state previously stored in Type into IrType and a Type->IrType map; fixes #7
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9 #include "gen/irstate.h"
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10 #include "gen/tollvm.h"
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11 #include "gen/logger.h"
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d14e4594c7d7 Changed aggregate field initializers to be created lazily, fixes problem with static void arrays in aggregates.
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12 #include "gen/llvmhelpers.h"
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13
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7ade5e035beb [svn r328] Fixed an issue with interfaces where the vtable type of a interface implemented could be invalid. Fixes several tango modules like, FileStream, ServerSocket
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14 IrInterface::IrInterface(BaseClass* b)
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15 : vtblInitTy(llvm::OpaqueType::get())
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16 {
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17 base = b;
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18 decl = b->base;
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19 vtblInit = NULL;
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20 vtbl = NULL;
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21 infoTy = NULL;
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22 infoInit = NULL;
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23 info = NULL;
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24
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25 index = 0;
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26 }
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27
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28 //////////////////////////////////////////////////////////////////////////////
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29 //////////////////////////////////////////////////////////////////////////////
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30 //////////////////////////////////////////////////////////////////////////////
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31
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32 IrStruct::IrStruct(AggregateDeclaration* aggr)
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33 : initOpaque(llvm::OpaqueType::get()),
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34 classInfoOpaque(llvm::OpaqueType::get()),
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35 vtblTy(llvm::OpaqueType::get()),
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36 vtblInitTy(llvm::OpaqueType::get())
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37 {
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38 aggrdecl = aggr;
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39 defaultFound = false;
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40 anon = NULL;
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41 index = 0;
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42
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43 type = aggr->type;
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44 defined = false;
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45 constinited = false;
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46
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47 interfaceInfos = NULL;
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48 vtbl = NULL;
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49 constVtbl = NULL;
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50
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51 init = NULL;
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52 constInit = NULL;
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53
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54 classInfo = NULL;
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55 constClassInfo = NULL;
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56 classInfoDeclared = false;
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57 classInfoDefined = false;
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58
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59 packed = false;
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60
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e3355ce5444b [svn r269] Fixed dwarf debug info for structs.
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61 dwarfComposite = NULL;
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62 }
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63
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64 IrStruct::~IrStruct()
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65 {
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66 }
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67
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68 //////////////////////////////////////////
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69
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70 void IrStruct::pushAnon(bool isunion)
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71 {
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72 anon = new Anon(isunion, anon);
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73 }
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74
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75 //////////////////////////////////////////
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76
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77 void IrStruct::popAnon()
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78 {
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79 assert(anon);
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80
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81 const LLType* BT;
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82
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83 // get the anon type
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84 if (anon->isunion)
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85 {
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86 // get biggest type in block
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87 const LLType* biggest = getBiggestType(&anon->types[0], anon->types.size());
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88 std::vector<const LLType*> vec(1, biggest);
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89 BT = LLStructType::get(vec, aggrdecl->ir.irStruct->packed);
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90 }
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91 else
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92 {
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93 // build a struct from the types
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94 BT = LLStructType::get(anon->types, aggrdecl->ir.irStruct->packed);
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95 }
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96
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97 // pop anon
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98 Anon* tmp = anon;
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99 anon = anon->parent;
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100 delete tmp;
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101
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102 // is there a parent anon?
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103 if (anon)
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104 {
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105 // make sure type gets pushed in the anon, not the main
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106 anon->types.push_back(BT);
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107 // index is only manipulated at the top level, anons use raw offsets
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108 }
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109 // no parent anon, finally add to aggrdecl
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110 else
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111 {
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112 types.push_back(BT);
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113 // only advance to next position if main is not a union
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114 if (!aggrdecl->isUnionDeclaration())
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115 {
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116 index++;
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117 }
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118 }
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119 }
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120
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121 //////////////////////////////////////////
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122
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123 void addZeros(std::vector<const llvm::Type*>& inits, size_t pos, size_t offset);
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124
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125 void IrStruct::addVar(VarDeclaration * var)
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126 {
797
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
127 TypeVector* tvec = &types;
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diff changeset
128 if (anon)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
129 {
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diff changeset
130 // make sure type gets pushed in the anon, not the main
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
131 tvec = &anon->types;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
132
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
133 // set but don't advance index
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diff changeset
134 var->ir.irField->index = index;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
135
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
136 // set offset in bytes from start of anon block
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
137 var->ir.irField->unionOffset = var->offset - var->offset2;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
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138 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
139 else if (aggrdecl->isUnionDeclaration())
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
140 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
141 // set but don't advance index
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diff changeset
142 var->ir.irField->index = index;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
143 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
144 else
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
145 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
146 // set and advance index
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
147 var->ir.irField->index = index++;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
148 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
149
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
150 // add type
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
151 tvec->push_back(DtoType(var->type));
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
152
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
153 // add var
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
154 varDecls.push_back(var);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
155 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
156
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
157 //////////////////////////////////////////
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
158
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
159 const LLType* IrStruct::build()
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
160 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
161 // if types is empty, add a byte
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
162 if (types.empty())
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
163 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
164 types.push_back(LLType::Int8Ty);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
165 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
166
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
167 // union type
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
168 if (aggrdecl->isUnionDeclaration())
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
169 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
170 const LLType* biggest = getBiggestType(&types[0], types.size());
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diff changeset
171 std::vector<const LLType*> vec(1, biggest);
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diff changeset
172 return LLStructType::get(vec, aggrdecl->ir.irStruct->packed);
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parents: 737
diff changeset
173 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
174 // struct/class type
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
175 else
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
176 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
177 return LLStructType::get(types, aggrdecl->ir.irStruct->packed);
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diff changeset
178 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
179 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
180
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
181 void addZeros(std::vector<const llvm::Type*>& inits, size_t pos, size_t offset)
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diff changeset
182 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
183 assert(offset > pos);
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diff changeset
184 size_t diff = offset - pos;
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diff changeset
185
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
186 size_t sz;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
187
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
188 do
737
041c1596d217 Removed warnings on ignored aligns. Only do aligment on packed structs, align(1) struct Packed { ... }
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 435
diff changeset
189 {
797
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diff changeset
190 if (pos%8 == 0 && diff >= 8)
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diff changeset
191 sz = 8;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
192 else if (pos%4 == 0 && diff >= 4)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
193 sz = 4;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
194 else if (pos%2 == 0 && diff >= 2)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
195 sz = 2;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
196 else // if (pos % 1 == 0)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
197 sz = 1;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
198 inits.push_back(LLIntegerType::get(sz*8));
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
199 pos += sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
200 diff -= sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
201 } while (pos < offset);
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
202
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
203 assert(pos == offset);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
204 }
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
205
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
206 void addZeros(std::vector<llvm::Constant*>& inits, size_t pos, size_t offset)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
207 {
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
208 assert(offset > pos);
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
209 size_t diff = offset - pos;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
210
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
211 size_t sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
212
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
213 do
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
214 {
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
215 if (pos%8 == 0 && diff >= 8)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
216 sz = 8;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
217 else if (pos%4 == 0 && diff >= 4)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
218 sz = 4;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
219 else if (pos%2 == 0 && diff >= 2)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
220 sz = 2;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
221 else // if (pos % 1 == 0)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
222 sz = 1;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
223 inits.push_back(LLConstant::getNullValue(LLIntegerType::get(sz*8)));
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
224 pos += sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
225 diff -= sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
226 } while (pos < offset);
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
227
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
228 assert(pos == offset);
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
229 }
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
230
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
231 // FIXME: body is exact copy of above
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
232 void addZeros(std::vector<llvm::Value*>& inits, size_t pos, size_t offset)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
233 {
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
234 assert(offset > pos);
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
235 size_t diff = offset - pos;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
236
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
237 size_t sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
238
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
239 do
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
240 {
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
241 if (pos%8 == 0 && diff >= 8)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
242 sz = 8;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
243 else if (pos%4 == 0 && diff >= 4)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
244 sz = 4;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
245 else if (pos%2 == 0 && diff >= 2)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
246 sz = 2;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
247 else // if (pos % 1 == 0)
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
248 sz = 1;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
249 inits.push_back(LLConstant::getNullValue(LLIntegerType::get(sz*8)));
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
250 pos += sz;
340acf1535d0 Removed KDevelop3 project files, CMake can generate them just fine!
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
251 diff -= sz;
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252 } while (pos < offset);
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253
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254 assert(pos == offset);
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255 }
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256
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257 void IrStruct::buildDefaultConstInit(std::vector<llvm::Constant*>& inits)
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258 {
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259 assert(!defaultFound);
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260 defaultFound = true;
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261
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262 const llvm::StructType* structtype = isaStruct(aggrdecl->type->ir.type->get());
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263 Logger::cout() << "struct type: " << *structtype << '\n';
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264
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265 size_t lastoffset = 0;
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266 size_t lastsize = 0;
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267
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268 {
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269 Logger::println("Find the default fields");
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270 LOG_SCOPE;
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271
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272 // go through all vars and find the ones that contribute to the default
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273 size_t nvars = varDecls.size();
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diff changeset
274 for (size_t i=0; i<nvars; i++)
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275 {
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diff changeset
276 VarDeclaration* var = varDecls[i];
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277
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278 Logger::println("field %s %s = %s : +%u", var->type->toChars(), var->toChars(), var->init ? var->init->toChars() : var->type->defaultInit(var->loc)->toChars(), var->offset);
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279
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280 // only add vars that don't overlap
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281 size_t offset = var->offset;
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282 size_t size = var->type->size();
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diff changeset
283 if (offset >= lastoffset+lastsize)
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284 {
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diff changeset
285 Logger::println(" added");
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286 lastoffset = offset;
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287 lastsize = size;
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diff changeset
288 defVars.push_back(var);
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289 }
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290 }
737
041c1596d217 Removed warnings on ignored aligns. Only do aligment on packed structs, align(1) struct Packed { ... }
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291 }
797
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diff changeset
292
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293 {
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diff changeset
294 Logger::println("Build the default initializer");
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295 LOG_SCOPE;
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diff changeset
296
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diff changeset
297 lastoffset = 0;
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diff changeset
298 lastsize = 0;
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299
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diff changeset
300 // go through the default vars and build the default constant initializer
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diff changeset
301 // adding zeros along the way to live up to alignment expectations
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diff changeset
302 size_t nvars = defVars.size();
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diff changeset
303 for (size_t i=0; i<nvars; i++)
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304 {
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diff changeset
305 VarDeclaration* var = defVars[i];
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diff changeset
306
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diff changeset
307 Logger::println("field %s %s = %s : +%u", var->type->toChars(), var->toChars(), var->init ? var->init->toChars() : var->type->defaultInit(var->loc)->toChars(), var->offset);
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diff changeset
308
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309 // get offset and size
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diff changeset
310 size_t offset = var->offset;
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diff changeset
311 size_t size = var->type->size();
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diff changeset
312
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313 // is there space in between last last offset and this one?
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diff changeset
314 // if so, fill it with zeros
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diff changeset
315 if (offset > lastoffset+lastsize)
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diff changeset
316 {
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diff changeset
317 size_t pos = lastoffset + lastsize;
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diff changeset
318 addZeros(inits, pos, offset);
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319 }
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diff changeset
320
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diff changeset
321 // add the field
800
d14e4594c7d7 Changed aggregate field initializers to be created lazily, fixes problem with static void arrays in aggregates.
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diff changeset
322 // lazily default initialize
d14e4594c7d7 Changed aggregate field initializers to be created lazily, fixes problem with static void arrays in aggregates.
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diff changeset
323 if (!var->ir.irField->constInit)
d14e4594c7d7 Changed aggregate field initializers to be created lazily, fixes problem with static void arrays in aggregates.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
324 var->ir.irField->constInit = DtoConstFieldInitializer(var->loc, var->type, var->init);
797
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diff changeset
325 inits.push_back(var->ir.irField->constInit);
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diff changeset
326
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diff changeset
327 lastoffset = offset;
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diff changeset
328 lastsize = var->type->size();
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diff changeset
329 }
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diff changeset
330
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diff changeset
331 // there might still be padding after the last one, make sure that is zeroed as well
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diff changeset
332 // is there space in between last last offset and this one?
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parents: 737
diff changeset
333 size_t structsize = getABITypeSize(structtype);
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diff changeset
334
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
335 if (structsize > lastoffset+lastsize)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
336 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
337 size_t pos = lastoffset + lastsize;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
338 addZeros(inits, pos, structsize);
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diff changeset
339 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
340 }
737
041c1596d217 Removed warnings on ignored aligns. Only do aligment on packed structs, align(1) struct Packed { ... }
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 435
diff changeset
341 }
797
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
342
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
343 LLConstant* IrStruct::buildDefaultConstInit()
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
344 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
345 // doesn't work for classes, they add stuff before and maybe after data fields
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
346 assert(!aggrdecl->isClassDeclaration());
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diff changeset
347
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
348 // initializer llvm constant list
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diff changeset
349 std::vector<LLConstant*> inits;
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diff changeset
350
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diff changeset
351 // just start with an empty list
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diff changeset
352 buildDefaultConstInit(inits);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
353
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
354 // build the constant
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
355 // note that the type matches the initializer, not the aggregate in cases with unions
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
356 LLConstant* c = LLConstantStruct::get(inits, aggrdecl->ir.irStruct->packed);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 737
diff changeset
357 Logger::cout() << "llvm constant: " << *c << '\n';
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parents: 737
diff changeset
358 // assert(0);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
359 return c;
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diff changeset
360 }