void IRGenModule::addLinkLibrary(const LinkLibrary &linkLib) {
llvm::LLVMContext &ctx = Module.getContext();
switch (linkLib.getKind()) {
case LibraryKind::Library: {
llvm::SmallString<32> opt =
getTargetDependentLibraryOption(Triple, linkLib.getName());
AutolinkEntries.push_back(
llvm::MDNode::get(ctx, llvm::MDString::get(ctx, opt)));
break;
}
case LibraryKind::Framework: {
// If we're supposed to disable autolinking of this framework, bail out.
auto &frameworks = IRGen.Opts.DisableAutolinkFrameworks;
if (std::find(frameworks.begin(), frameworks.end(), linkLib.getName())
!= frameworks.end())
return;
llvm::Metadata *args[] = {
llvm::MDString::get(ctx, "-framework"),
llvm::MDString::get(ctx, linkLib.getName())
};
AutolinkEntries.push_back(llvm::MDNode::get(ctx, args));
break;
}
}
if (linkLib.shouldForceLoad()) {
llvm::SmallString<64> buf;
encodeForceLoadSymbolName(buf, linkLib.getName());
auto ForceImportThunk =
Module.getOrInsertFunction(buf, llvm::FunctionType::get(VoidTy, false));
if (useDllStorage())
cast<llvm::GlobalValue>(ForceImportThunk)
->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
buf += "_$";
appendEncodedName(buf, IRGen.Opts.ModuleName);
if (!Module.getGlobalVariable(buf.str())) {
auto ref = new llvm::GlobalVariable(Module, ForceImportThunk->getType(),
/*isConstant=*/true,
llvm::GlobalValue::WeakAnyLinkage,
ForceImportThunk, buf.str());
ref->setVisibility(llvm::GlobalValue::HiddenVisibility);
auto casted = llvm::ConstantExpr::getBitCast(ref, Int8PtrTy);
LLVMUsed.push_back(casted);
}
}
}
void IRGenModule::addLinkLibrary(const LinkLibrary &linkLib) {
llvm::LLVMContext &ctx = Module.getContext();
switch (linkLib.getKind()) {
case LibraryKind::Library: {
// FIXME: Use target-independent linker option.
// Clang uses CGM.getTargetCodeGenInfo().getDependentLibraryOption(...).
llvm::SmallString<32> buf;
buf += "-l";
buf += linkLib.getName();
auto flag = llvm::MDString::get(ctx, buf);
AutolinkEntries.push_back(llvm::MDNode::get(ctx, flag));
break;
}
case LibraryKind::Framework: {
// If we're supposed to disable autolinking of this framework, bail out.
auto &frameworks = IRGen.Opts.DisableAutolinkFrameworks;
if (std::find(frameworks.begin(), frameworks.end(), linkLib.getName())
!= frameworks.end())
return;
llvm::Metadata *args[] = {
llvm::MDString::get(ctx, "-framework"),
llvm::MDString::get(ctx, linkLib.getName())
};
AutolinkEntries.push_back(llvm::MDNode::get(ctx, args));
break;
}
}
if (linkLib.shouldForceLoad()) {
llvm::SmallString<64> buf;
encodeForceLoadSymbolName(buf, linkLib.getName());
auto symbolAddr = Module.getOrInsertGlobal(buf.str(), Int1Ty);
buf += "_$";
appendEncodedName(buf, IRGen.Opts.ModuleName);
if (!Module.getGlobalVariable(buf.str())) {
auto ref = new llvm::GlobalVariable(Module, symbolAddr->getType(),
/*constant=*/true,
llvm::GlobalValue::WeakAnyLinkage,
symbolAddr, buf.str());
ref->setVisibility(llvm::GlobalValue::HiddenVisibility);
auto casted = llvm::ConstantExpr::getBitCast(ref, Int8PtrTy);
LLVMUsed.push_back(casted);
}
}
}