std::tuple<llvm::TargetOptions, std::string, std::vector<std::string>>
swift::getIRTargetOptions(IRGenOptions &Opts, ASTContext &Ctx) {
// Things that maybe we should collect from the command line:
// - relocation model
// - code model
// FIXME: We should do this entirely through Clang, for consistency.
TargetOptions TargetOpts;
auto *Clang = static_cast<ClangImporter *>(Ctx.getClangModuleLoader());
clang::TargetOptions &ClangOpts = Clang->getTargetInfo().getTargetOpts();
return std::make_tuple(TargetOpts, ClangOpts.CPU, ClangOpts.Features);
}
void swift::ide::printHeaderInterface(
StringRef Filename,
ASTContext &Ctx,
ASTPrinter &Printer,
const PrintOptions &Options) {
auto AdjustedOptions = Options;
adjustPrintOptions(AdjustedOptions);
auto &Importer = static_cast<ClangImporter &>(*Ctx.getClangModuleLoader());
auto &ClangSM = Importer.getClangASTContext().getSourceManager();
auto headerFilter = [&](ClangNode ClangN) -> bool {
return true; // no need for filtering.
};
SmallVector<Decl *, 32> ClangDecls;
llvm::SmallPtrSet<Decl *, 32> SeenDecls;
auto headerReceiver = [&](Decl *D) {
if (SeenDecls.count(D) == 0) {
SeenDecls.insert(D);
ClangDecls.push_back(D);
}
};
Importer.lookupDeclsFromHeader(Filename, headerFilter, headerReceiver);
// Sort imported declarations in source order.
std::sort(ClangDecls.begin(), ClangDecls.end(),
[&](Decl *LHS, Decl *RHS) -> bool {
return ClangSM.isBeforeInTranslationUnit(
LHS->getClangNode().getLocation(),
RHS->getClangNode().getLocation());
});
ASTPrinter *PrinterToUse = &Printer;
ClangCommentPrinter RegularCommentPrinter(Printer, Importer);
if (Options.PrintRegularClangComments)
PrinterToUse = &RegularCommentPrinter;
for (auto *D : ClangDecls) {
ASTPrinter &Printer = *PrinterToUse;
if (!shouldPrint(D, AdjustedOptions)) {
Printer.avoidPrintDeclPost(D);
continue;
}
if (D->print(Printer, AdjustedOptions))
Printer << "\n";
}
}
std::tuple<llvm::TargetOptions, std::string, std::vector<std::string>>
swift::getIRTargetOptions(IRGenOptions &Opts, ASTContext &Ctx) {
// Things that maybe we should collect from the command line:
// - relocation model
// - code model
// FIXME: We should do this entirely through Clang, for consistency.
TargetOptions TargetOpts;
// Explicitly request debugger tuning for LLDB which is the default
// on Darwin platforms but not on others.
TargetOpts.DebuggerTuning = llvm::DebuggerKind::LLDB;
auto *Clang = static_cast<ClangImporter *>(Ctx.getClangModuleLoader());
clang::TargetOptions &ClangOpts = Clang->getTargetInfo().getTargetOpts();
return std::make_tuple(TargetOpts, ClangOpts.CPU, ClangOpts.Features);
}
/// Use the Clang importer to mangle a Clang declaration.
static void mangleClangDecl(raw_ostream &buffer,
const clang::NamedDecl *clangDecl,
ASTContext &ctx) {
auto *importer = static_cast<ClangImporter *>(ctx.getClangModuleLoader());
importer->getMangledName(buffer, clangDecl);
}
IRGenModule::IRGenModule(IRGenModuleDispatcher &dispatcher, SourceFile *SF,
ASTContext &Context,
llvm::LLVMContext &LLVMContext,
IRGenOptions &Opts, StringRef ModuleName,
const llvm::DataLayout &DataLayout,
const llvm::Triple &Triple,
llvm::TargetMachine *TargetMachine,
SILModule *SILMod,
StringRef OutputFilename)
: Context(Context), Opts(Opts),
ClangCodeGen(createClangCodeGenerator(Context, LLVMContext, Opts, ModuleName)),
Module(*ClangCodeGen->GetModule()),
LLVMContext(Module.getContext()), DataLayout(DataLayout),
Triple(Triple), TargetMachine(TargetMachine),
SILMod(SILMod), OutputFilename(OutputFilename), dispatcher(dispatcher),
TargetInfo(SwiftTargetInfo::get(*this)),
DebugInfo(0), ObjCInterop(Context.LangOpts.EnableObjCInterop),
Types(*new TypeConverter(*this))
{
dispatcher.addGenModule(SF, this);
VoidTy = llvm::Type::getVoidTy(getLLVMContext());
Int1Ty = llvm::Type::getInt1Ty(getLLVMContext());
Int8Ty = llvm::Type::getInt8Ty(getLLVMContext());
Int16Ty = llvm::Type::getInt16Ty(getLLVMContext());
Int32Ty = llvm::Type::getInt32Ty(getLLVMContext());
Int64Ty = llvm::Type::getInt64Ty(getLLVMContext());
Int8PtrTy = llvm::Type::getInt8PtrTy(getLLVMContext());
Int8PtrPtrTy = Int8PtrTy->getPointerTo(0);
SizeTy = DataLayout.getIntPtrType(getLLVMContext(), /*addrspace*/ 0);
auto CI = static_cast<ClangImporter*>(&*Context.getClangModuleLoader());
assert(CI && "no clang module loader");
auto &clangASTContext = CI->getClangASTContext();
ObjCBoolTy = Int1Ty;
if (clangASTContext.getTargetInfo().useSignedCharForObjCBool())
ObjCBoolTy = Int8Ty;
RefCountedStructTy =
llvm::StructType::create(getLLVMContext(), "swift.refcounted");
RefCountedPtrTy = RefCountedStructTy->getPointerTo(/*addrspace*/ 0);
RefCountedNull = llvm::ConstantPointerNull::get(RefCountedPtrTy);
// For now, native weak references are just a pointer.
WeakReferencePtrTy =
createStructPointerType(*this, "swift.weak", { RefCountedPtrTy });
// Native unowned references are just a pointer.
UnownedReferencePtrTy =
createStructPointerType(*this, "swift.unowned", { RefCountedPtrTy });
// A type metadata record is the structure pointed to by the canonical
// address point of a type metadata. This is at least one word, and
// potentially more than that, past the start of the actual global
// structure.
TypeMetadataStructTy = createStructType(*this, "swift.type", {
MetadataKindTy // MetadataKind Kind;
});
TypeMetadataPtrTy = TypeMetadataStructTy->getPointerTo(DefaultAS);
// A protocol descriptor describes a protocol. It is not type metadata in
// and of itself, but is referenced in the structure of existential type
// metadata records.
ProtocolDescriptorStructTy = createStructType(*this, "swift.protocol", {
Int8PtrTy, // objc isa
Int8PtrTy, // name
Int8PtrTy, // inherited protocols
Int8PtrTy, // required objc instance methods
Int8PtrTy, // required objc class methods
Int8PtrTy, // optional objc instance methods
Int8PtrTy, // optional objc class methods
Int8PtrTy, // objc properties
Int32Ty, // size
Int32Ty // flags
});
ProtocolDescriptorPtrTy = ProtocolDescriptorStructTy->getPointerTo();
// A tuple type metadata record has a couple extra fields.
auto tupleElementTy = createStructType(*this, "swift.tuple_element_type", {
TypeMetadataPtrTy, // Metadata *Type;
SizeTy // size_t Offset;
});
TupleTypeMetadataPtrTy = createStructPointerType(*this, "swift.tuple_type", {
TypeMetadataStructTy, // (base)
SizeTy, // size_t NumElements;
Int8PtrTy, // const char *Labels;
llvm::ArrayType::get(tupleElementTy, 0) // Element Elements[];
});
// A full type metadata record is basically just an adjustment to the
// address point of a type metadata. Resilience may cause
// additional data to be laid out prior to this address point.
FullTypeMetadataStructTy = createStructType(*this, "swift.full_type", {
WitnessTablePtrTy,
TypeMetadataStructTy
});
FullTypeMetadataPtrTy = FullTypeMetadataStructTy->getPointerTo(DefaultAS);
// A metadata pattern is a structure from which generic type
// metadata are allocated. We leave this struct type intentionally
// opaque, because the compiler basically never needs to access
// anything from one.
TypeMetadataPatternStructTy =
llvm::StructType::create(getLLVMContext(), "swift.type_pattern");
TypeMetadataPatternPtrTy =
TypeMetadataPatternStructTy->getPointerTo(DefaultAS);
DeallocatingDtorTy = llvm::FunctionType::get(VoidTy, RefCountedPtrTy, false);
llvm::Type *dtorPtrTy = DeallocatingDtorTy->getPointerTo();
// A full heap metadata is basically just an additional small prefix
// on a full metadata, used for metadata corresponding to heap
// allocations.
FullHeapMetadataStructTy =
createStructType(*this, "swift.full_heapmetadata", {
dtorPtrTy,
WitnessTablePtrTy,
TypeMetadataStructTy
});
FullHeapMetadataPtrTy = FullHeapMetadataStructTy->getPointerTo(DefaultAS);
// A full box metadata is non-type heap metadata for a heap allocation of a
// single value. The box tracks the offset to the value inside the box.
FullBoxMetadataStructTy =
createStructType(*this, "swift.full_boxmetadata", {
dtorPtrTy,
WitnessTablePtrTy,
TypeMetadataStructTy,
Int32Ty,
});
FullBoxMetadataPtrTy = FullBoxMetadataStructTy->getPointerTo(DefaultAS);
llvm::Type *refCountedElts[] = { TypeMetadataPtrTy, Int32Ty, Int32Ty };
RefCountedStructTy->setBody(refCountedElts);
PtrSize = Size(DataLayout.getPointerSize(DefaultAS));
FunctionPairTy = createStructType(*this, "swift.function", {
FunctionPtrTy,
RefCountedPtrTy,
});
OpaquePtrTy = llvm::StructType::create(LLVMContext, "swift.opaque")
->getPointerTo(DefaultAS);
ProtocolConformanceRecordTy
= createStructType(*this, "swift.protocol_conformance", {
RelativeAddressTy,
RelativeAddressTy,
RelativeAddressTy,
Int32Ty
});
ProtocolConformanceRecordPtrTy
= ProtocolConformanceRecordTy->getPointerTo(DefaultAS);
FixedBufferTy = nullptr;
for (unsigned i = 0; i != MaxNumValueWitnesses; ++i)
ValueWitnessTys[i] = nullptr;
ObjCPtrTy = llvm::StructType::create(getLLVMContext(), "objc_object")
->getPointerTo(DefaultAS);
BridgeObjectPtrTy = llvm::StructType::create(getLLVMContext(), "swift.bridge")
->getPointerTo(DefaultAS);
ObjCClassStructTy = llvm::StructType::create(LLVMContext, "objc_class");
ObjCClassPtrTy = ObjCClassStructTy->getPointerTo(DefaultAS);
llvm::Type *objcClassElts[] = {
ObjCClassPtrTy,
ObjCClassPtrTy,
OpaquePtrTy,
OpaquePtrTy,
IntPtrTy
};
ObjCClassStructTy->setBody(objcClassElts);
ObjCSuperStructTy = llvm::StructType::create(LLVMContext, "objc_super");
ObjCSuperPtrTy = ObjCSuperStructTy->getPointerTo(DefaultAS);
llvm::Type *objcSuperElts[] = {
ObjCPtrTy,
ObjCClassPtrTy
};
ObjCSuperStructTy->setBody(objcSuperElts);
ObjCBlockStructTy = llvm::StructType::create(LLVMContext, "objc_block");
ObjCBlockPtrTy = ObjCBlockStructTy->getPointerTo(DefaultAS);
llvm::Type *objcBlockElts[] = {
ObjCClassPtrTy, // isa
Int32Ty, // flags
Int32Ty, // reserved
FunctionPtrTy, // invoke function pointer
Int8PtrTy, // TODO: block descriptor pointer.
// We will probably need a struct type for that at some
// point too.
};
ObjCBlockStructTy->setBody(objcBlockElts);
auto ErrorStructTy = llvm::StructType::create(LLVMContext, "swift.error");
// ErrorStruct is currently opaque to the compiler.
ErrorPtrTy = ErrorStructTy->getPointerTo(DefaultAS);
llvm::Type *openedErrorTriple[] = {
OpaquePtrTy,
TypeMetadataPtrTy,
WitnessTablePtrTy,
};
OpenedErrorTripleTy = llvm::StructType::get(getLLVMContext(),
openedErrorTriple,
/*packed*/ false);
OpenedErrorTriplePtrTy = OpenedErrorTripleTy->getPointerTo(DefaultAS);
InvariantMetadataID = LLVMContext.getMDKindID("invariant.load");
InvariantNode = llvm::MDNode::get(LLVMContext, {});
DereferenceableID = LLVMContext.getMDKindID("dereferenceable");
// TODO: use "tinycc" on platforms that support it
RuntimeCC = llvm::CallingConv::C;
ABITypes = new CodeGenABITypes(clangASTContext, Module);
if (Opts.DebugInfoKind != IRGenDebugInfoKind::None) {
DebugInfo = new IRGenDebugInfo(Opts, *CI, *this, Module, SF);
}
initClangTypeConverter();
}