diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Object/IRSymtab.cpp | 45 |
1 files changed, 36 insertions, 9 deletions
diff --git a/lib/Object/IRSymtab.cpp b/lib/Object/IRSymtab.cpp index 7fc84e2046c..2d8d3f7c087 100644 --- a/lib/Object/IRSymtab.cpp +++ b/lib/Object/IRSymtab.cpp @@ -72,7 +72,7 @@ struct Builder { BumpPtrAllocator &Alloc) : Symtab(Symtab), StrtabBuilder(StrtabBuilder), Saver(Alloc) {} - DenseMap<const Comdat *, unsigned> ComdatMap; + DenseMap<const Comdat *, int> ComdatMap; Mangler Mang; Triple TT; @@ -97,6 +97,8 @@ struct Builder { reinterpret_cast<const char *>(Objs.data() + Objs.size())); } + Expected<int> getComdatIndex(const Comdat *C, const Module *M); + Error addModule(Module *M); Error addSymbol(const ModuleSymbolTable &Msymtab, const SmallPtrSet<GlobalValue *, 8> &Used, @@ -140,6 +142,35 @@ Error Builder::addModule(Module *M) { return Error::success(); } +Expected<int> Builder::getComdatIndex(const Comdat *C, const Module *M) { + auto P = ComdatMap.insert(std::make_pair(C, Comdats.size())); + if (P.second) { + std::string Name; + if (TT.isOSBinFormatCOFF()) { + const GlobalValue *GV = M->getNamedValue(C->getName()); + if (!GV) + return make_error<StringError>("Could not find leader", + inconvertibleErrorCode()); + // Internal leaders do not affect symbol resolution, therefore they do not + // appear in the symbol table. + if (GV->hasLocalLinkage()) { + P.first->second = -1; + return -1; + } + llvm::raw_string_ostream OS(Name); + Mang.getNameWithPrefix(OS, GV, false); + } else { + Name = C->getName(); + } + + storage::Comdat Comdat; + setStr(Comdat.Name, Saver.save(Name)); + Comdats.push_back(Comdat); + } + + return P.first->second; +} + Error Builder::addSymbol(const ModuleSymbolTable &Msymtab, const SmallPtrSet<GlobalValue *, 8> &Used, ModuleSymbolTable::Symbol Msym) { @@ -216,14 +247,10 @@ Error Builder::addSymbol(const ModuleSymbolTable &Msymtab, return make_error<StringError>("Unable to determine comdat of alias!", inconvertibleErrorCode()); if (const Comdat *C = Base->getComdat()) { - auto P = ComdatMap.insert(std::make_pair(C, Comdats.size())); - Sym.ComdatIndex = P.first->second; - - if (P.second) { - storage::Comdat Comdat; - setStr(Comdat.Name, C->getName()); - Comdats.push_back(Comdat); - } + Expected<int> ComdatIndexOrErr = getComdatIndex(C, GV->getParent()); + if (!ComdatIndexOrErr) + return ComdatIndexOrErr.takeError(); + Sym.ComdatIndex = *ComdatIndexOrErr; } if (TT.isOSBinFormatCOFF()) { |