/// Set up prototypes for any aliases that come over from the source module.
GlobalValue *ModuleLinker::copyGlobalAliasProto(TypeMapTy &TypeMap,
const GlobalAlias *SGA) {
- // If we are importing and encounter a weak_any alias, or an alias to
- // an object being imported as a declaration, we must import the alias
- // as a declaration as well, which involves converting it to a non-alias.
- // See comments in ModuleLinker::getLinkage for why we cannot import
- // weak_any defintions.
- if (isPerformingImport() && !doImportAsDefinition(SGA)) {
- // Need to convert to declaration. All aliases must be definitions.
- const GlobalValue *GVal = SGA->getBaseObject();
- GlobalValue *NewGV;
- if (auto *GVar = dyn_cast<GlobalVariable>(GVal))
- NewGV = copyGlobalVariableProto(TypeMap, GVar);
- else {
- auto *F = dyn_cast<Function>(GVal);
- assert(F);
- NewGV = copyFunctionProto(TypeMap, F);
- }
- // Set the linkage to External or ExternalWeak (see comments in
- // ModuleLinker::getLinkage for why WeakAny is converted to ExternalWeak).
- if (SGA->hasWeakAnyLinkage())
- NewGV->setLinkage(GlobalValue::ExternalWeakLinkage);
- else
- NewGV->setLinkage(GlobalValue::ExternalLinkage);
- return NewGV;
- }
// If there is no linkage to be performed or we're linking from the source,
// bring over SGA.
auto *Ty = TypeMap.get(SGA->getValueType());
Comdat *C = nullptr;
bool HasUnnamedAddr = SGV->hasUnnamedAddr();
- if (const Comdat *SC = SGV->getComdat()) {
+ if (isPerformingImport() && !doImportAsDefinition(SGV)) {
+ LinkFromSrc = false;
+ } else if (const Comdat *SC = SGV->getComdat()) {
Comdat::SelectionKind SK;
std::tie(SK, LinkFromSrc) = ComdatsChosen[SC];
C = DstM.getOrInsertComdat(SC->getName());
setVisibility(NewGV, SGV, DGV);
} else {
NewGV = copyGlobalValueProto(TypeMap, SGV, DGV, LinkFromSrc);
-
- if (isPerformingImport() && !doImportAsDefinition(SGV))
- DoNotLinkFromSource.insert(SGV);
}
NewGV->setUnnamedAddr(HasUnnamedAddr);