Expected<uint32_t> llvm::pdb::hashTypeRecord(const CVType &Rec) {
switch (Rec.kind()) {
case LF_CLASS:
case LF_STRUCTURE:
case LF_INTERFACE:
return getHashForUdt<ClassRecord>(Rec);
case LF_UNION:
return getHashForUdt<UnionRecord>(Rec);
case LF_ENUM:
return getHashForUdt<EnumRecord>(Rec);
case LF_UDT_SRC_LINE:
return getSourceLineHash<UdtSourceLineRecord>(Rec);
case LF_UDT_MOD_SRC_LINE:
return getSourceLineHash<UdtModSourceLineRecord>(Rec);
default:
break;
}
// Run CRC32 over the bytes. This corresponds to `hashBufv8`.
JamCRC JC(/*Init=*/0U);
ArrayRef<char> Bytes(reinterpret_cast<const char *>(Rec.data().data()),
Rec.data().size());
JC.update(Bytes);
return JC.getCRC();
}
static Expected<uint32_t> getHashForUdt(const CVType &Rec) {
T Deserialized;
if (auto E = TypeDeserializer::deserializeAs(const_cast<CVType &>(Rec),
Deserialized))
return std::move(E);
return getHashForUdt(Deserialized, Rec.data());
}
static ArrayRef<uint8_t> bytes(const CVType &Item) { return Item.data(); }
