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Construct composite type DIE using DebugInfo.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61741 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-01-05 19:55:51 +00:00
parent a22d57d6f8
commit f421533661
1 changed files with 83 additions and 4 deletions
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87
lib/CodeGen/AsmPrinter/DwarfWriter.cpp
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@ -1541,6 +1541,84 @@ private:
// FIXME - Enable this. AddSourceLine(&Buffer, *DTy);
}
/// ConstructTypeDIE - Construct type DIE from DICompositeType.
void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
DICompositeType *CTy) {
// Get core information.
const std::string &Name = CTy->getName();
uint64_t Size = CTy->getSizeInBits() >> 3;
unsigned Tag = CTy->getTag();
switch (Tag) {
case DW_TAG_vector_type:
case DW_TAG_array_type:
ConstructArrayTypeDIE(DW_Unit, Buffer, CTy);
break;
//FIXME - Enable this.
// case DW_TAG_enumeration_type:
// DIArray Elements = CTy->getTypeArray();
// // Add enumerators to enumeration type.
// for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i)
// ConstructEnumTypeDIE(Buffer, &Elements.getElement(i));
// break;
case DW_TAG_subroutine_type:
{
// Add prototype flag.
AddUInt(&Buffer, DW_AT_prototyped, DW_FORM_flag, 1);
DIArray Elements = CTy->getTypeArray();
// Add return type.
// FIXME - Enable this.AddType(&Buffer, Elements.getElement(0), DW_Unit);
// Add arguments.
for (unsigned i = 1, N = Elements.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(DW_TAG_formal_parameter);
// FIXME - Enable this.AddType(Arg, Elements.getElement(i), DW_Unit);
Buffer.AddChild(Arg);
}
}
break;
case DW_TAG_structure_type:
case DW_TAG_union_type:
{
// Add elements to structure type.
DIArray Elements = CTy->getTypeArray();
// Add elements to structure type.
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
if (DISubprogram *SP = dyn_cast<DISubprogram>(&Element))
ConstructFieldTypeDIE(DW_Unit, Buffer, SP);
else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&Element))
ConstructFieldTypeDIE(DW_Unit, Buffer, DT);
else if (DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(&Element))
ConstructFieldTypeDIE(DW_Unit, Buffer, GV);
}
}
break;
default:
break;
}
// Add name if not anonymous or intermediate type.
if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
// Add size if non-zero (derived types might be zero-sized.)
if (Size)
AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
else {
// Add zero size even if it is not a forward declaration.
// FIXME - Enable this.
// if (!CTy->isDefinition())
// AddUInt(&Buffer, DW_AT_declaration, DW_FORM_flag, 1);
// else
// AddUInt(&Buffer, DW_AT_byte_size, 0, 0);
}
// Add source line info if available and TyDesc is not a forward
// declaration.
// FIXME - Enable this.
// if (CTy->isForwardDecl())
// AddSourceLine(&Buffer, *CTy);
}
// ConstructSubrangeDIE - Construct subrange DIE from DISubrange.
void ConstructSubrangeDIE (DIE &Buffer, DISubrange *SR, DIE *IndexTy) {
int64_t L = SR->getLo();
@ -1574,15 +1652,16 @@ private:
// Add subranges to array type.
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DISubrange Element = Elements.getElement(i);
ConstructSubrangeDIE(Buffer, &Element, IndexTy);
DIDescriptor Element = Elements.getElement(i);
if (DISubrange *SR = dyn_cast<DISubrange>(&Element))
ConstructSubrangeDIE(Buffer, SR, IndexTy);
}
}
/// ConstructEnumTypeDIE - Construct enum type DIE from
/// DIEnumerator.
void ConstructEnumType(CompileUnit *DW_Unit,
DIE &Buffer, DIEnumerator *ETy) {
void ConstructEnumTypeDIE(CompileUnit *DW_Unit,
DIE &Buffer, DIEnumerator *ETy) {
DIE *Enumerator = new DIE(DW_TAG_enumerator);
AddString(Enumerator, DW_AT_name, DW_FORM_string, ETy->getName());