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Refactor. A subprogram is part of compile unit so let CompileUnit construct new subprogram.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137618 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2011-08-15 17:24:54 +00:00
parent 8757a4c6ab
commit dbc64af76d
4 changed files with 141 additions and 114 deletions
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123
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -564,7 +564,7 @@ void CompileUnit::addToContextOwner(DIE *Die, DIDescriptor Context) {
DIE *ContextDIE = getOrCreateNameSpace(DINameSpace(Context));
ContextDIE->addChild(Die);
} else if (Context.isSubprogram()) {
DIE *ContextDIE = DD->createSubprogramDIE(DISubprogram(Context));
DIE *ContextDIE = getOrCreateSubprogramDIE(DISubprogram(Context));
ContextDIE->addChild(Die);
} else if (DIE *ContextDIE = getDIE(Context))
ContextDIE->addChild(Die);
@ -761,7 +761,7 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
DIE *ElemDie = NULL;
if (Element.isSubprogram()) {
DISubprogram SP(Element);
ElemDie = DD->createSubprogramDIE(DISubprogram(Element));
ElemDie = getOrCreateSubprogramDIE(DISubprogram(Element));
if (SP.isProtected())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_protected);
@ -889,6 +889,111 @@ DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
return NDie;
}
/// getRealLinkageName - If special LLVM prefix that is used to inform the asm
/// printer to not emit usual symbol prefix before the symbol name is used then
/// return linkage name after skipping this special LLVM prefix.
static StringRef getRealLinkageName(StringRef LinkageName) {
char One = '\1';
if (LinkageName.startswith(StringRef(&One, 1)))
return LinkageName.substr(1);
return LinkageName;
}
/// getOrCreateSubprogramDIE - Create new DIE using SP.
DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
DIE *SPDie = getDIE(SP);
if (SPDie)
return SPDie;
SPDie = new DIE(dwarf::DW_TAG_subprogram);
// DW_TAG_inlined_subroutine may refer to this DIE.
insertDIE(SP, SPDie);
// Add to context owner.
addToContextOwner(SPDie, SP.getContext());
// Add function template parameters.
addTemplateParams(*SPDie, SP.getTemplateParams());
StringRef LinkageName = SP.getLinkageName();
if (!LinkageName.empty())
addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
dwarf::DW_FORM_string,
getRealLinkageName(LinkageName));
// If this DIE is going to refer declaration info using AT_specification
// then there is no need to add other attributes.
if (SP.getFunctionDeclaration().isSubprogram())
return SPDie;
// Constructors and operators for anonymous aggregates do not have names.
if (!SP.getName().empty())
addString(SPDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,
SP.getName());
addSourceLine(SPDie, SP);
if (SP.isPrototyped())
addUInt(SPDie, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
// Add Return Type.
DICompositeType SPTy = SP.getType();
DIArray Args = SPTy.getTypeArray();
unsigned SPTag = SPTy.getTag();
if (Args.getNumElements() == 0 || SPTag != dwarf::DW_TAG_subroutine_type)
addType(SPDie, SPTy);
else
addType(SPDie, DIType(Args.getElement(0)));
unsigned VK = SP.getVirtuality();
if (VK) {
addUInt(SPDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_flag, VK);
DIEBlock *Block = getDIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
addUInt(Block, 0, dwarf::DW_FORM_udata, SP.getVirtualIndex());
addBlock(SPDie, dwarf::DW_AT_vtable_elem_location, 0, Block);
ContainingTypeMap.insert(std::make_pair(SPDie,
SP.getContainingType()));
}
if (!SP.isDefinition()) {
addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
// Add arguments. Do not add arguments for subprogram definition. They will
// be handled while processing variables.
DICompositeType SPTy = SP.getType();
DIArray Args = SPTy.getTypeArray();
unsigned SPTag = SPTy.getTag();
if (SPTag == dwarf::DW_TAG_subroutine_type)
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
DIType ATy = DIType(DIType(Args.getElement(i)));
addType(Arg, ATy);
if (ATy.isArtificial())
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
SPDie->addChild(Arg);
}
}
if (SP.isArtificial())
addUInt(SPDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
if (!SP.isLocalToUnit())
addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
if (SP.isOptimized())
addUInt(SPDie, dwarf::DW_AT_APPLE_optimized, dwarf::DW_FORM_flag, 1);
if (unsigned isa = Asm->getISAEncoding()) {
addUInt(SPDie, dwarf::DW_AT_APPLE_isa, dwarf::DW_FORM_flag, isa);
}
return SPDie;
}
/// constructSubrangeDIE - Construct subrange DIE from DISubrange.
void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy){
DIE *DW_Subrange = new DIE(dwarf::DW_TAG_subrange_type);
@ -953,6 +1058,20 @@ DIE *CompileUnit::constructEnumTypeDIE(DIEnumerator ETy) {
return Enumerator;
}
/// constructContainingTypeDIEs - Construct DIEs for types that contain
/// vtables.
void CompileUnit::constructContainingTypeDIEs() {
for (DenseMap<DIE *, const MDNode *>::iterator CI = ContainingTypeMap.begin(),
CE = ContainingTypeMap.end(); CI != CE; ++CI) {
DIE *SPDie = CI->first;
const MDNode *N = CI->second;
if (!N) continue;
DIE *NDie = getDIE(N);
if (!NDie) continue;
addDIEEntry(SPDie, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, NDie);
}
}
/// createMemberDIE - Create new member DIE.
DIE *CompileUnit::createMemberDIE(DIDerivedType DT) {
DIE *MemberDie = new DIE(DT.getTag());