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Differential D70259 Diff 230140 llvm/lib/DebugInfo/CodeView/RecordName.cpp

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llvm/lib/DebugInfo/CodeView/RecordName.cpp

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StringRef llvm::codeview::getSymbolName(CVSymbol Sym) { StringRef llvm::codeview::getSymbolName(CVSymbol Sym) {
if (Sym.kind() == SymbolKind::S_CONSTANT) { if (Sym.kind() == SymbolKind::S_CONSTANT) {
// S_CONSTANT is preceded by an APSInt, which has a variable length. So we // S_CONSTANT is preceded by an APSInt, which has a variable length. So we
// have to do a full deserialization. // have to do a full deserialization.
BinaryStreamReader Reader(Sym.content(), llvm::support::little); BinaryStreamReader Reader(Sym.content(), llvm::support::little);
// The container doesn't matter for single records. // The container doesn't matter for single records.
SymbolRecordMapping Mapping(Reader, CodeViewContainer::ObjectFile); SymbolRecordMapping Mapping(Reader, CodeViewContainer::ObjectFile);
ConstantSym Const(SymbolKind::S_CONSTANT); ConstantSym Const(SymbolKind::S_CONSTANT);
cantFail(Mapping.visitSymbolBegin(Sym)); llvm_cantFail(Mapping.visitSymbolBegin(Sym));
cantFail(Mapping.visitKnownRecord(Sym, Const)); llvm_cantFail(Mapping.visitKnownRecord(Sym, Const));
cantFail(Mapping.visitSymbolEnd(Sym)); llvm_cantFail(Mapping.visitSymbolEnd(Sym));
return Const.Name; return Const.Name;
} }
int Offset = getSymbolNameOffset(Sym); int Offset = getSymbolNameOffset(Sym);
if (Offset == -1) if (Offset == -1)
return StringRef(); return StringRef();
StringRef StringData = toStringRef(Sym.content()).drop_front(Offset); StringRef StringData = toStringRef(Sym.content()).drop_front(Offset);
return StringData.split('\0').first; return StringData.split('\0').first;
} }