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Construct stuct field DIEs. 

llvm-svn: 61729
This commit is contained in:
Devang Patel 2009-01-05 18:59:44 +00:00
parent 1c8dd9be79
commit 5024d377f2
2 changed files with 79 additions and 0 deletions
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1
llvm/include/llvm/Analysis/DebugInfo.h
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@ -228,6 +228,7 @@ namespace llvm {
explicit DISubprogram(GlobalVariable *GV = 0);
std::string getFilename() const { return getStringField(11); }
std::string getDirectory() const { return getStringField(12); }
DICompositeType getType() const { return getFieldAs<DICompositeType>(8); }
};
/// DIGlobalVariable - This is a wrapper for a global variable.

78
llvm/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
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@ -1591,6 +1591,84 @@ private:
Buffer.AddChild(Enumerator);
}
/// ConstructFieldTypeDIE - Construct variable DIE for a struct field.
void ConstructFieldTypeDIE(CompileUnit *DW_Unit,
DIE &Buffer, DIGlobalVariable *V) {
DIE *VariableDie = new DIE(DW_TAG_variable);
const std::string &LinkageName = V->getLinkageName();
if (!LinkageName.empty())
AddString(VariableDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
LinkageName);
// FIXME - Enable this. AddSourceLine(VariableDie, V);
// FIXME - Enable this. AddType(VariableDie, V->getType(), DW_Unit);
if (!V->isLocalToUnit())
AddUInt(VariableDie, DW_AT_external, DW_FORM_flag, 1);
AddUInt(VariableDie, DW_AT_declaration, DW_FORM_flag, 1);
Buffer.AddChild(VariableDie);
}
/// ConstructFieldTypeDIE - Construct subprogram DIE for a struct field.
void ConstructFieldTypeDIE(CompileUnit *DW_Unit,
DIE &Buffer, DISubprogram *SP,
bool IsConstructor = false) {
DIE *Method = new DIE(DW_TAG_subprogram);
AddString(Method, DW_AT_name, DW_FORM_string, SP->getName());
const std::string &LinkageName = SP->getLinkageName();
if (!LinkageName.empty())
AddString(Method, DW_AT_MIPS_linkage_name, DW_FORM_string, LinkageName);
// FIXME - Enable this. AddSourceLine(Method, SP);
DICompositeType MTy = SP->getType();
DIArray Args = MTy.getTypeArray();
// Add Return Type.
// FIXME - Enable this. if (!IsConstructor)
// Fixme - Enable this. AddType(Method, Args.getElement(0), DW_Unit);
// Add arguments.
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(DW_TAG_formal_parameter);
// FIXME - Enable this. AddType(Arg, Args.getElement(i), DW_Unit);
AddUInt(Arg, DW_AT_artificial, DW_FORM_flag, 1); // ???
Method->AddChild(Arg);
}
if (!SP->isLocalToUnit())
AddUInt(Method, DW_AT_external, DW_FORM_flag, 1);
Buffer.AddChild(Method);
}
/// COnstructFieldTypeDIE - Construct derived type DIE for a struct field.
void ConstructFieldTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
DIDerivedType *DTy) {
unsigned Tag = DTy->getTag();
DIE *MemberDie = new DIE(Tag);
if (!DTy->getName().empty())
AddString(MemberDie, DW_AT_name, DW_FORM_string, DTy->getName());
// FIXME - Enable this. AddSourceLine(MemberDie, DTy);
DIType FromTy = DTy->getTypeDerivedFrom();
// FIXME - Enable this. AddType(MemberDie, FromTy, DW_Unit);
uint64_t Size = DTy->getSizeInBits();
uint64_t Offset = DTy->getOffsetInBits();
// FIXME Handle bitfields
// Add size.
AddUInt(MemberDie, DW_AT_bit_size, 0, Size);
// Add computation for offset.
DIEBlock *Block = new DIEBlock();
AddUInt(Block, 0, DW_FORM_data1, DW_OP_plus_uconst);
AddUInt(Block, 0, DW_FORM_udata, Offset >> 3);
AddBlock(MemberDie, DW_AT_data_member_location, 0, Block);
// FIXME Handle DW_AT_accessibility.
Buffer.AddChild(MemberDie);
}
/// ConstructType - Adds all the required attributes to the type.
///
void ConstructType(DIE &Buffer, TypeDesc *TyDesc, CompileUnit *Unit) {