- if (!TU) {
- DIE *UnitDie = new DIE(dwarf::DW_TAG_type_unit);
- DwarfTypeUnit *NewTU =
- new DwarfTypeUnit(InfoHolder.getUnits().size(), UnitDie, Language, Asm,
- this, &InfoHolder);
- TU = NewTU;
- InfoHolder.addUnit(NewTU);
-
- NewTU->addUInt(UnitDie, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
- Language);
-
- DIE *Die = NewTU->createTypeDIE(CTy);
-
- if (GenerateODRHash && shouldAddODRHash(NewTU, Die))
- NewTU->addUInt(UnitDie, dwarf::DW_AT_GNU_odr_signature,
- dwarf::DW_FORM_data8,
- DIEHash().computeDIEODRSignature(*Die));
- // FIXME: This won't handle circularly referential structures, as the DIE
- // may have references to other DIEs still under construction and missing
- // their signature. Hashing should walk through the signatures to their
- // referenced type, or possibly walk the precomputed hashes of related types
- // at the end.
- uint64_t Signature = DIEHash().computeTypeSignature(*Die);
- NewTU->setTypeSignature(Signature);
- NewTU->setType(Die);
-
- NewTU->initSection(
- useSplitDwarf()
- ? Asm->getObjFileLowering().getDwarfTypesDWOSection(Signature)
- : Asm->getObjFileLowering().getDwarfTypesSection(Signature));
- }
-
- CUMap.begin()->second->addDIETypeSignature(RefDie, *TU);
+ if (TU) {
+ CU.addDIETypeSignature(RefDie, *TU);
+ return;
+ }
+
+ DIE *UnitDie = new DIE(dwarf::DW_TAG_type_unit);
+ DwarfTypeUnit *NewTU = new DwarfTypeUnit(InfoHolder.getUnits().size(),
+ UnitDie, CU, Asm, this, &InfoHolder);
+ TU = NewTU;
+ InfoHolder.addUnit(NewTU);
+
+ NewTU->addUInt(UnitDie, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
+ CU.getLanguage());
+
+ MD5 Hash;
+ Hash.update(Identifier);
+ // ... take the least significant 8 bytes and return those. Our MD5
+ // implementation always returns its results in little endian, swap bytes
+ // appropriately.
+ MD5::MD5Result Result;
+ Hash.final(Result);
+ uint64_t Signature = *reinterpret_cast<support::ulittle64_t *>(Result + 8);
+ NewTU->setTypeSignature(Signature);
+ if (useSplitDwarf())
+ NewTU->setSkeleton(constructSkeletonTU(NewTU));
+ else
+ CU.applyStmtList(*UnitDie);
+
+ NewTU->setType(NewTU->createTypeDIE(CTy));
+
+ NewTU->initSection(
+ useSplitDwarf()
+ ? Asm->getObjFileLowering().getDwarfTypesDWOSection(Signature)
+ : Asm->getObjFileLowering().getDwarfTypesSection(Signature));
+
+ CU.addDIETypeSignature(RefDie, *NewTU);