replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Refactor. 

llvm-svn: 93814
This commit is contained in:
Devang Patel 2010-01-19 00:00:59 +00:00
parent 7ecd020cf2
commit 889ce76f41
2 changed files with 62 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

109
clang/lib/CodeGen/CGDebugInfo.cpp
View File

@ -460,6 +460,65 @@ llvm::DIType CGDebugInfo::CreateType(const FunctionType *Ty,
return DbgTy;
}
/// CollectRecordFields - A helper function to collect debug info for
/// record fields. This is used while creating debug info entry for a Record.
void CGDebugInfo::
CollectRecordFields(const RecordDecl *Decl,
llvm::DICompileUnit Unit,
llvm::SmallVectorImpl<llvm::DIDescriptor> &EltTys) {
unsigned FieldNo = 0;
SourceManager &SM = CGM.getContext().getSourceManager();
const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(Decl);
for (RecordDecl::field_iterator I = Decl->field_begin(),
E = Decl->field_end();
I != E; ++I, ++FieldNo) {
FieldDecl *Field = *I;
llvm::DIType FieldTy = getOrCreateType(Field->getType(), Unit);
llvm::StringRef FieldName = Field->getName();
// Ignore unnamed fields.
if (FieldName.empty())
continue;
// Get the location for the field.
SourceLocation FieldDefLoc = Field->getLocation();
PresumedLoc PLoc = SM.getPresumedLoc(FieldDefLoc);
llvm::DICompileUnit FieldDefUnit;
unsigned FieldLine = 0;
if (!PLoc.isInvalid()) {
FieldDefUnit = getOrCreateCompileUnit(FieldDefLoc);
FieldLine = PLoc.getLine();
}
QualType FType = Field->getType();
uint64_t FieldSize = 0;
unsigned FieldAlign = 0;
if (!FType->isIncompleteArrayType()) {
// Bit size, align and offset of the type.
FieldSize = CGM.getContext().getTypeSize(FType);
Expr *BitWidth = Field->getBitWidth();
if (BitWidth)
FieldSize = BitWidth->EvaluateAsInt(CGM.getContext()).getZExtValue();
FieldAlign = CGM.getContext().getTypeAlign(FType);
}
uint64_t FieldOffset = RL.getFieldOffset(FieldNo);
// Create a DW_TAG_member node to remember the offset of this field in the
// struct. FIXME: This is an absolutely insane way to capture this
// information. When we gut debug info, this should be fixed.
FieldTy = DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_member, Unit,
FieldName, FieldDefUnit,
FieldLine, FieldSize, FieldAlign,
FieldOffset, 0, FieldTy);
EltTys.push_back(FieldTy);
}
}
/// CreateType - get structure or union type.
llvm::DIType CGDebugInfo::CreateType(const RecordType *Ty,
llvm::DICompileUnit Unit) {
@ -509,57 +568,9 @@ llvm::DIType CGDebugInfo::CreateType(const RecordType *Ty,
// Convert all the elements.
llvm::SmallVector<llvm::DIDescriptor, 16> EltTys;
const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(Decl);
unsigned FieldNo = 0;
for (RecordDecl::field_iterator I = Decl->field_begin(),
E = Decl->field_end();
I != E; ++I, ++FieldNo) {
FieldDecl *Field = *I;
llvm::DIType FieldTy = getOrCreateType(Field->getType(), Unit);
llvm::StringRef FieldName = Field->getName();
// Ignore unnamed fields.
if (FieldName.empty())
continue;
// Get the location for the field.
SourceLocation FieldDefLoc = Field->getLocation();
PresumedLoc PLoc = SM.getPresumedLoc(FieldDefLoc);
llvm::DICompileUnit FieldDefUnit;
unsigned FieldLine = 0;
if (!PLoc.isInvalid()) {
FieldDefUnit = getOrCreateCompileUnit(FieldDefLoc);
FieldLine = PLoc.getLine();
}
QualType FType = Field->getType();
uint64_t FieldSize = 0;
unsigned FieldAlign = 0;
if (!FType->isIncompleteArrayType()) {
// Bit size, align and offset of the type.
FieldSize = CGM.getContext().getTypeSize(FType);
Expr *BitWidth = Field->getBitWidth();
if (BitWidth)
FieldSize = BitWidth->EvaluateAsInt(CGM.getContext()).getZExtValue();
FieldAlign = CGM.getContext().getTypeAlign(FType);
}
uint64_t FieldOffset = RL.getFieldOffset(FieldNo);
// Create a DW_TAG_member node to remember the offset of this field in the
// struct. FIXME: This is an absolutely insane way to capture this
// information. When we gut debug info, this should be fixed.
FieldTy = DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_member, Unit,
FieldName, FieldDefUnit,
FieldLine, FieldSize, FieldAlign,
FieldOffset, 0, FieldTy);
EltTys.push_back(FieldTy);
}
CollectRecordFields(Decl, Unit, EltTys);
llvm::DIArray Elements =
DebugFactory.GetOrCreateArray(EltTys.data(), EltTys.size());

2
clang/lib/CodeGen/CGDebugInfo.h
View File

@ -85,6 +85,8 @@ class CGDebugInfo {
llvm::DIType CreatePointerLikeType(unsigned Tag,
const Type *Ty, QualType PointeeTy,
llvm::DICompileUnit U);
void CollectRecordFields(const RecordDecl *Decl, llvm::DICompileUnit U,
llvm::SmallVectorImpl<llvm::DIDescriptor> &E);
public:
CGDebugInfo(CodeGenModule &CGM);
~CGDebugInfo();