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annotate gen/todebug.cpp @ 245:d61ce72c39ab trunk

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[svn r262] Fixed debug info for normal function parameters. Fixed debug info for pointers to basic types.
author lindquist
date Mon, 09 Jun 2008 12:43:16 +0200
parents a95056b3c996
children b604c56945b0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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1 #include "gen/llvm.h"
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2 #include "llvm/Support/Dwarf.h"
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3 #include "llvm/CodeGen/MachineModuleInfo.h"
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4
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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5 #include "declaration.h"
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6 #include "module.h"
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7 #include "mars.h"
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8
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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9 #include "gen/todebug.h"
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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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/logger.h"
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13
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0ab29b838084 [svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
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14 #include "ir/irmodule.h"
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15
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16 using namespace llvm::dwarf;
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17
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18 static const llvm::PointerType* ptrTy(const LLType* t)
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19 {
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44a95ac7368a [svn r137] Many fixes towards tango.io.Console working, but not quite there yet...
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20 return llvm::PointerType::get(t, 0);
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21 }
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22
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23 static const llvm::PointerType* dbgArrTy()
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24 {
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25 return ptrTy(llvm::StructType::get(NULL,NULL));
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26 }
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27
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28 static LLConstant* dbgToArrTy(LLConstant* c)
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29 {
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30 return llvm::ConstantExpr::getBitCast(c, dbgArrTy());
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31 }
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32
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33 #define Ty(X) LLType::X
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34
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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35 //////////////////////////////////////////////////////////////////////////////////////////////////
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36
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37 static llvm::GlobalVariable* dbg_compile_units = 0;
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38 static llvm::GlobalVariable* dbg_global_variables = 0;
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39 static llvm::GlobalVariable* dbg_subprograms = 0;
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40
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41 const llvm::StructType* GetDwarfAnchorType()
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42 {
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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43 /*
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44 %llvm.dbg.anchor.type = type {
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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45 uint, ;; Tag = 0 + LLVMDebugVersion
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46 uint ;; Tag of descriptors grouped by the anchor
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47 }
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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48 */
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49
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50 const llvm::StructType* t = isaStruct(gIR->module->getTypeByName("llvm.dbg.anchor.type"));
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51
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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52 /*
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53 %llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { uint 0, uint 17 } ;; DW_TAG_compile_unit
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54 %llvm.dbg.global_variables = linkonce constant %llvm.dbg.anchor.type { uint 0, uint 52 } ;; DW_TAG_variable
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55 %llvm.dbg.subprograms = linkonce constant %llvm.dbg.anchor.type { uint 0, uint 46 } ;; DW_TAG_subprogram
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56 */
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57 if (!gIR->module->getNamedGlobal("llvm.dbg.compile_units")) {
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58 std::vector<LLConstant*> vals;
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59 vals.push_back(DtoConstUint(llvm::LLVMDebugVersion));
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60 vals.push_back(DtoConstUint(DW_TAG_compile_unit));
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61 LLConstant* i = llvm::ConstantStruct::get(t, vals);
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62 dbg_compile_units = new llvm::GlobalVariable(t,true,llvm::GlobalValue::LinkOnceLinkage,i,"llvm.dbg.compile_units",gIR->module);
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63 dbg_compile_units->setSection("llvm.metadata");
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64 }
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65 if (!gIR->module->getNamedGlobal("llvm.dbg.global_variables")) {
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66 std::vector<LLConstant*> vals;
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67 vals.push_back(DtoConstUint(llvm::LLVMDebugVersion));
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68 vals.push_back(DtoConstUint(DW_TAG_variable));
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69 LLConstant* i = llvm::ConstantStruct::get(t, vals);
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70 dbg_global_variables = new llvm::GlobalVariable(t,true,llvm::GlobalValue::LinkOnceLinkage,i,"llvm.dbg.global_variables",gIR->module);
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71 dbg_global_variables->setSection("llvm.metadata");
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72 }
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73 if (!gIR->module->getNamedGlobal("llvm.dbg.subprograms")) {
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74 std::vector<LLConstant*> vals;
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75 vals.push_back(DtoConstUint(llvm::LLVMDebugVersion));
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76 vals.push_back(DtoConstUint(DW_TAG_subprogram));
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77 LLConstant* i = llvm::ConstantStruct::get(t, vals);
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78 dbg_subprograms = new llvm::GlobalVariable(t,true,llvm::GlobalValue::LinkOnceLinkage,i,"llvm.dbg.subprograms",gIR->module);
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79 dbg_subprograms->setSection("llvm.metadata");
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80 }
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81
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82 return t;
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83 }
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84
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85 LLConstant* GetDwarfAnchor(llvm::dwarf::dwarf_constants c)
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86 {
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87 GetDwarfAnchorType();
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88 switch (c)
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89 {
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90 case DW_TAG_compile_unit:
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91 return dbg_compile_units;
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92 case DW_TAG_variable:
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93 return dbg_global_variables;
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94 case DW_TAG_subprogram:
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95 return dbg_subprograms;
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96 }
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97 assert(0);
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98 return 0;
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99 }
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100
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101 //////////////////////////////////////////////////////////////////////////////////////////////////
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102
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103 static const llvm::StructType* GetDwarfCompileUnitType() {
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104 return isaStruct(gIR->module->getTypeByName("llvm.dbg.compile_unit.type"));
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105 }
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106
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107 static const llvm::StructType* GetDwarfSubProgramType() {
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108 return isaStruct(gIR->module->getTypeByName("llvm.dbg.subprogram.type"));
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109 }
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110
245
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111 static const llvm::StructType* GetDwarfVariableType() {
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112 return isaStruct(gIR->module->getTypeByName("llvm.dbg.variable.type"));
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113 }
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114
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115 static const llvm::StructType* GetDwarfDerivedTypeType() {
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116 return isaStruct(gIR->module->getTypeByName("llvm.dbg.derivedtype.type"));
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117 }
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118
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119 static const llvm::StructType* GetDwarfBasicTypeType() {
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120 return isaStruct(gIR->module->getTypeByName("llvm.dbg.basictype.type"));
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121 }
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122
82
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123 //////////////////////////////////////////////////////////////////////////////////////////////////
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124
245
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125 LLGlobalVariable* DtoDwarfCompileUnit(Module* m)
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126 {
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127 if (!m->ir.irModule)
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128 m->ir.irModule = new IrModule(m);
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129 else if (m->ir.irModule->dwarfCompileUnit)
139
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130 {
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131 if (m->ir.irModule->dwarfCompileUnit->getParent() == gIR->module)
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132 return m->ir.irModule->dwarfCompileUnit;
139
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133 }
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134
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135 // create a valid compile unit constant for the current module
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136
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137 LLConstant* c = NULL;
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138
213
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139 std::vector<LLConstant*> vals;
139
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140 vals.push_back(llvm::ConstantExpr::getAdd(
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141 DtoConstUint(DW_TAG_compile_unit),
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142 DtoConstUint(llvm::LLVMDebugVersion)));
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143 vals.push_back(dbgToArrTy(GetDwarfAnchor(DW_TAG_compile_unit)));
82
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144
139
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145 vals.push_back(DtoConstUint(DW_LANG_C));// _D)); // doesn't seem to work
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146 vals.push_back(DtoConstStringPtr(m->srcfile->name->toChars(), "llvm.metadata"));
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147 std::string srcpath(FileName::path(m->srcfile->name->toChars()));
140
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148 if (srcpath.empty()) {
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149 const char* str = get_current_dir_name();
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150 assert(str != NULL);
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151 srcpath = str;
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152 }
139
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153 vals.push_back(DtoConstStringPtr(srcpath.c_str(), "llvm.metadata"));
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154 vals.push_back(DtoConstStringPtr("LLVMDC (http://www.dsource.org/projects/llvmdc)", "llvm.metadata"));
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155
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156 c = llvm::ConstantStruct::get(GetDwarfCompileUnitType(), vals);
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157
94
61615fa85940 [svn r98] Added support for std.c.stdlib.alloca via pragma(LLVM_internal, "alloca").
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158 llvm::GlobalVariable* gv = new llvm::GlobalVariable(GetDwarfCompileUnitType(), true, llvm::GlobalValue::InternalLinkage, c, "llvm.dbg.compile_unit", gIR->module);
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159 gv->setSection("llvm.metadata");
139
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160
173
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161 m->ir.irModule->dwarfCompileUnit = gv;
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162 return gv;
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163 }
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164
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165 //////////////////////////////////////////////////////////////////////////////////////////////////
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166
244
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167 LLGlobalVariable* DtoDwarfSubProgram(FuncDeclaration* fd, llvm::GlobalVariable* compileUnit)
82
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168 {
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169 std::vector<LLConstant*> vals;
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170 vals.push_back(llvm::ConstantExpr::getAdd(
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171 DtoConstUint(DW_TAG_subprogram),
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172 DtoConstUint(llvm::LLVMDebugVersion)));
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173 vals.push_back(dbgToArrTy(GetDwarfAnchor(DW_TAG_subprogram)));
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174
94
61615fa85940 [svn r98] Added support for std.c.stdlib.alloca via pragma(LLVM_internal, "alloca").
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175 vals.push_back(dbgToArrTy(compileUnit));
82
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176 vals.push_back(DtoConstStringPtr(fd->toPrettyChars(), "llvm.metadata"));
94
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177 vals.push_back(vals.back());
82
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178 vals.push_back(DtoConstStringPtr(fd->mangle(), "llvm.metadata"));
94
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179 vals.push_back(dbgToArrTy(compileUnit));
82
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180 vals.push_back(DtoConstUint(fd->loc.linnum));
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181 vals.push_back(llvm::ConstantPointerNull::get(dbgArrTy()));
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182 vals.push_back(DtoConstBool(fd->protection == PROTprivate));
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183 vals.push_back(DtoConstBool(fd->getModule() == gIR->dmodule));
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184
213
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185 LLConstant* c = llvm::ConstantStruct::get(GetDwarfSubProgramType(), vals);
82
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186 llvm::GlobalVariable* gv = new llvm::GlobalVariable(c->getType(), true, llvm::GlobalValue::InternalLinkage, c, "llvm.dbg.subprogram", gIR->module);
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187 gv->setSection("llvm.metadata");
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188 return gv;
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189 }
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190
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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191 //////////////////////////////////////////////////////////////////////////////////////////////////
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192
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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193 void DtoDwarfFuncStart(FuncDeclaration* fd)
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194 {
173
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195 assert(fd->ir.irFunc->dwarfSubProg);
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196 gIR->ir->CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), dbgToArrTy(fd->ir.irFunc->dwarfSubProg));
82
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197 }
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198
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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199 void DtoDwarfFuncEnd(FuncDeclaration* fd)
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200 {
173
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201 assert(fd->ir.irFunc->dwarfSubProg);
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202 gIR->ir->CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), dbgToArrTy(fd->ir.irFunc->dwarfSubProg));
82
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203 }
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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204
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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205 //////////////////////////////////////////////////////////////////////////////////////////////////
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206
d8dd47ef3973 [svn r86] Changed the way arguments are given storage. It is now detected if they will need it during semantic passes.
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207 void DtoDwarfStopPoint(unsigned ln)
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208 {
217
0806379a5eca [svn r233] Added: -oq command line option for writing fully qualified object names.
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209 LLSmallVector<LLValue*,3> args;
82
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210 args.push_back(DtoConstUint(ln));
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211 args.push_back(DtoConstUint(0));
139
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212 FuncDeclaration* fd = gIR->func()->decl;
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213 args.push_back(dbgToArrTy(DtoDwarfCompileUnit(fd->getModule())));
82
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214 gIR->ir->CreateCall(gIR->module->getFunction("llvm.dbg.stoppoint"), args.begin(), args.end());
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215 }
244
a95056b3c996 [svn r261] Fixed debug info for integer and floating local variables, can now be inspected in GDB.
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216
a95056b3c996 [svn r261] Fixed debug info for integer and floating local variables, can now be inspected in GDB.
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217 //////////////////////////////////////////////////////////////////////////////////////////////////
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218
245
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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219 static LLGlobalVariable* DtoDwarfTypeDescription(Loc loc, Type* type, LLGlobalVariable* cu);
244
a95056b3c996 [svn r261] Fixed debug info for integer and floating local variables, can now be inspected in GDB.
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220
a95056b3c996 [svn r261] Fixed debug info for integer and floating local variables, can now be inspected in GDB.
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221 //////////////////////////////////////////////////////////////////////////////////////////////////
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222
245
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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223 static LLGlobalVariable* DtoDwarfBasicType(Type* type, llvm::GlobalVariable* compileUnit)
244
a95056b3c996 [svn r261] Fixed debug info for integer and floating local variables, can now be inspected in GDB.
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224 {
245
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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225 Type* t = type->toBasetype();
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226
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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227
244
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228 const LLType* T = DtoType(type);
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229
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230 std::vector<LLConstant*> vals;
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231 // tag
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232 vals.push_back(llvm::ConstantExpr::getAdd(
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233 DtoConstUint(DW_TAG_base_type),
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234 DtoConstUint(llvm::LLVMDebugVersion)));
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235 // context
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236 vals.push_back(dbgToArrTy(compileUnit));
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237 // name
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238 vals.push_back(DtoConstStringPtr(type->toChars(), "llvm.metadata"));
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239 // compile unit where defined
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240 vals.push_back(getNullPtr(dbgArrTy()));
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241 // line number where defined
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242 vals.push_back(DtoConstInt(0));
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243 // size in bits
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244 vals.push_back(LLConstantInt::get(LLType::Int64Ty, getTypeBitSize(T), false));
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245 // alignment in bits
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246 vals.push_back(LLConstantInt::get(LLType::Int64Ty, getABITypeAlign(T)*8, false));
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247 // offset in bits
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248 vals.push_back(LLConstantInt::get(LLType::Int64Ty, 0, false));
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249 // FIXME: dont know what this is
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250 vals.push_back(DtoConstUint(0));
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251 // dwarf type
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252 unsigned id;
245
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253 if (t->isintegral())
244
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254 {
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255 if (type->isunsigned())
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256 id = llvm::dwarf::DW_ATE_unsigned;
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257 else
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258 id = llvm::dwarf::DW_ATE_signed;
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259 }
245
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260 else if (t->isfloating())
244
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261 {
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262 id = llvm::dwarf::DW_ATE_float;
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263 }
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264 else
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265 {
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266 assert(0 && "unsupported basictype for debug info");
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267 }
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268 vals.push_back(DtoConstUint(id));
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269
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270 LLConstant* c = llvm::ConstantStruct::get(GetDwarfBasicTypeType(), vals);
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271 LLGlobalVariable* gv = new LLGlobalVariable(c->getType(), true, LLGlobalValue::InternalLinkage, c, "llvm.dbg.basictype", gIR->module);
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272 gv->setSection("llvm.metadata");
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273 return gv;
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274 }
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275
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276 //////////////////////////////////////////////////////////////////////////////////////////////////
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277
245
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278 static LLGlobalVariable* DtoDwarfDerivedType(Loc loc, Type* type, llvm::GlobalVariable* compileUnit)
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279 {
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280 const LLType* T = DtoType(type);
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281 Type* t = DtoDType(type);
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282
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283 // defaults
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284 LLConstant* name = getNullPtr(getVoidPtrType());
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285
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286 // find tag
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287 unsigned tag;
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288 if (t->ty == Tpointer)
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289 {
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290 tag = llvm::dwarf::DW_TAG_pointer_type;
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291 }
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292 else
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293 {
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294 assert(0 && "unsupported derivedtype for debug info");
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295 }
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296
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297 std::vector<LLConstant*> vals;
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298 // tag
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299 vals.push_back(llvm::ConstantExpr::getAdd(
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300 DtoConstUint(tag),
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301 DtoConstUint(llvm::LLVMDebugVersion)));
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302 // context
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303 vals.push_back(dbgToArrTy(compileUnit));
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304 // name
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305 vals.push_back(name);
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306 // compile unit where defined
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307 vals.push_back(getNullPtr(dbgArrTy()));
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308 // line number where defined
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309 vals.push_back(DtoConstInt(0));
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310 // size in bits
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311 vals.push_back(LLConstantInt::get(LLType::Int64Ty, getTypeBitSize(T), false));
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312 // alignment in bits
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313 vals.push_back(LLConstantInt::get(LLType::Int64Ty, getABITypeAlign(T)*8, false));
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314 // offset in bits
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315 vals.push_back(LLConstantInt::get(LLType::Int64Ty, 0, false));
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316 // FIXME: dont know what this is
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317 vals.push_back(DtoConstUint(0));
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318 // base type
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319 Type* nt = t->nextOf();
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320 LLGlobalVariable* nTD = DtoDwarfTypeDescription(loc, nt, compileUnit);
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321 if (nt->ty == Tvoid || !nTD)
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322 vals.push_back(getNullPtr(dbgArrTy()));
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323 else
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324 vals.push_back(dbgToArrTy(nTD));
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325
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326 LLConstant* c = llvm::ConstantStruct::get(GetDwarfDerivedTypeType(), vals);
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327 LLGlobalVariable* gv = new LLGlobalVariable(c->getType(), true, LLGlobalValue::InternalLinkage, c, "llvm.dbg.derivedtype", gIR->module);
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328 gv->setSection("llvm.metadata");
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329 return gv;
244
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330 }
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331
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332 //////////////////////////////////////////////////////////////////////////////////////////////////
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333
245
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334 static LLGlobalVariable* DtoDwarfVariable(VarDeclaration* vd, LLGlobalVariable* typeDescr)
244
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335 {
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336 unsigned tag;
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337 if (vd->isParameter())
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338 tag = DW_TAG_arg_variable;
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339 else if (vd->isCodeseg())
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340 assert(0 && "a static variable");
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341 else
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342 tag = DW_TAG_auto_variable;
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343
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344 std::vector<LLConstant*> vals;
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345 // tag
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346 vals.push_back(llvm::ConstantExpr::getAdd(
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347 DtoConstUint(tag),
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348 DtoConstUint(llvm::LLVMDebugVersion)));
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349 // context
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350 vals.push_back(dbgToArrTy(gIR->func()->dwarfSubProg));
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351 // name
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352 vals.push_back(DtoConstStringPtr(vd->toChars(), "llvm.metadata"));
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353 // compile unit where defined
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354 vals.push_back(dbgToArrTy(DtoDwarfCompileUnit(vd->getModule())));
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355 // line number where defined
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356 vals.push_back(DtoConstUint(vd->loc.linnum));
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357 // type descriptor
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358 vals.push_back(dbgToArrTy(typeDescr));
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359
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360 LLConstant* c = llvm::ConstantStruct::get(GetDwarfVariableType(), vals);
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361 LLGlobalVariable* gv = new LLGlobalVariable(c->getType(), true, LLGlobalValue::InternalLinkage, c, "llvm.dbg.variable", gIR->module);
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362 gv->setSection("llvm.metadata");
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363 return gv;
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364 }
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365
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366 //////////////////////////////////////////////////////////////////////////////////////////////////
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367
245
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368 static void DtoDwarfDeclare(LLValue* var, LLGlobalVariable* varDescr)
244
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369 {
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370 LLSmallVector<LLValue*,2> args;
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371 args.push_back(DtoBitCast(var, dbgArrTy()));
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372 args.push_back(dbgToArrTy(varDescr));
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373 gIR->ir->CreateCall(gIR->module->getFunction("llvm.dbg.declare"), args.begin(), args.end());
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374 }
245
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375
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376 //////////////////////////////////////////////////////////////////////////////////////////////////
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377
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378 static LLGlobalVariable* DtoDwarfTypeDescription(Loc loc, Type* type, LLGlobalVariable* cu)
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379 {
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380 Type* t = type->toBasetype();
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381 if (t->isintegral() || t->isfloating())
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382 return DtoDwarfBasicType(type, cu);
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383 else if (t->ty == Tpointer)
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384 return DtoDwarfDerivedType(loc, type, cu);
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385
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386 Logger::attention(loc, "unsupport type for debug info: %s", type->toChars());
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387 return NULL;
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388 }
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389
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390 void DtoDwarfLocalVariable(LLValue* ll, VarDeclaration* vd)
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391 {
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392 // get compile units
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393 LLGlobalVariable* thisCU = DtoDwarfCompileUnit(gIR->dmodule);
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diff changeset
394 LLGlobalVariable* varCU = thisCU;
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diff changeset
395 if (vd->getModule() != gIR->dmodule)
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396 varCU = DtoDwarfCompileUnit(vd->getModule());
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diff changeset
397
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398 // get type description
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399 Type* t = vd->type->toBasetype();
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400 LLGlobalVariable* TD = DtoDwarfTypeDescription(vd->loc, vd->type, thisCU);
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401 if (TD == NULL)
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402 return; // unsupported
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403
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404 // get variable description
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diff changeset
405 LLGlobalVariable* VD;
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diff changeset
406 VD = DtoDwarfVariable(vd, TD);
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diff changeset
407
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diff changeset
408 // declare
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409 DtoDwarfDeclare(ll, VD);
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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410 }
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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411
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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412
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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413
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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414
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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415
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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416
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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417
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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418
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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419
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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420
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
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421
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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422
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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423
d61ce72c39ab [svn r262] Fixed debug info for normal function parameters.
lindquist
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424