if (!this->isStructTy())
return false;
- // Opaque structs have no size.
- if (cast<StructType>(this)->isOpaque())
- return false;
-
- // Okay, our struct is sized if all of the elements are.
- for (subtype_iterator I = subtype_begin(), E = subtype_end(); I != E; ++I)
- if (!(*I)->isSized())
- return false;
-
- return true;
+ return cast<StructType>(this)->isSized();
}
//===----------------------------------------------------------------------===//
return cast<StructType>(this)->getElementType(N);
}
-
-
Type *Type::getSequentialElementType() const {
return cast<SequentialType>(this)->getElementType();
}
}
-
-
//===----------------------------------------------------------------------===//
// Primitive 'Type' data
//===----------------------------------------------------------------------===//
// FunctionType::get - The factory function for the FunctionType class.
FunctionType *FunctionType::get(Type *ReturnType,
ArrayRef<Type*> Params, bool isVarArg) {
- // TODO: This is brutally slow.
- unsigned ParamsSize = Params.size();
- std::vector<Type*> Key;
- Key.reserve(ParamsSize + 2);
- Key.push_back(const_cast<Type*>(ReturnType));
- for (unsigned i = 0, e = ParamsSize; i != e; ++i)
- Key.push_back(const_cast<Type*>(Params[i]));
- if (isVarArg)
- Key.push_back(0);
-
LLVMContextImpl *pImpl = ReturnType->getContext().pImpl;
- FunctionType *&FT = pImpl->FunctionTypes[Key];
-
- if (FT == 0) {
+ FunctionTypeKeyInfo::KeyTy Key(ReturnType, Params, isVarArg);
+ LLVMContextImpl::FunctionTypeMap::iterator I =
+ pImpl->FunctionTypes.find_as(Key);
+ FunctionType *FT;
+
+ if (I == pImpl->FunctionTypes.end()) {
FT = (FunctionType*) pImpl->TypeAllocator.
- Allocate(sizeof(FunctionType) + sizeof(Type*) * (ParamsSize + 1),
+ Allocate(sizeof(FunctionType) + sizeof(Type*) * (Params.size() + 1),
AlignOf<FunctionType>::Alignment);
new (FT) FunctionType(ReturnType, Params, isVarArg);
+ pImpl->FunctionTypes[FT] = true;
+ } else {
+ FT = I->first;
}
return FT;
}
-
FunctionType *FunctionType::get(Type *Result, bool isVarArg) {
return get(Result, ArrayRef<Type *>(), isVarArg);
}
-
/// isValidReturnType - Return true if the specified type is valid as a return
/// type.
bool FunctionType::isValidReturnType(Type *RetTy) {
StructType *StructType::get(LLVMContext &Context, ArrayRef<Type*> ETypes,
bool isPacked) {
- // FIXME: std::vector is horribly inefficient for this probe.
- unsigned ETypesSize = ETypes.size();
- std::vector<Type*> Key(ETypesSize);
- for (unsigned i = 0, e = ETypesSize; i != e; ++i) {
- assert(isValidElementType(ETypes[i]) &&
- "Invalid type for structure element!");
- Key[i] = ETypes[i];
+ LLVMContextImpl *pImpl = Context.pImpl;
+ AnonStructTypeKeyInfo::KeyTy Key(ETypes, isPacked);
+ LLVMContextImpl::StructTypeMap::iterator I =
+ pImpl->AnonStructTypes.find_as(Key);
+ StructType *ST;
+
+ if (I == pImpl->AnonStructTypes.end()) {
+ // Value not found. Create a new type!
+ ST = new (Context.pImpl->TypeAllocator) StructType(Context);
+ ST->setSubclassData(SCDB_IsLiteral); // Literal struct.
+ ST->setBody(ETypes, isPacked);
+ Context.pImpl->AnonStructTypes[ST] = true;
+ } else {
+ ST = I->first;
}
- if (isPacked)
- Key.push_back(0);
-
- StructType *&ST = Context.pImpl->AnonStructTypes[Key];
- if (ST) return ST;
-
- // Value not found. Create a new type!
- ST = new (Context.pImpl->TypeAllocator) StructType(Context);
- ST->setSubclassData(SCDB_IsLiteral); // Literal struct.
- ST->setBody(ETypes, isPacked);
+
return ST;
}
void StructType::setName(StringRef Name) {
if (Name == getName()) return;
- // If this struct already had a name, remove its symbol table entry.
- if (SymbolTableEntry) {
- getContext().pImpl->NamedStructTypes.erase(getName());
- SymbolTableEntry = 0;
- }
-
+ StringMap<StructType *> &SymbolTable = getContext().pImpl->NamedStructTypes;
+ typedef StringMap<StructType *>::MapEntryTy EntryTy;
+
+ // If this struct already had a name, remove its symbol table entry. Don't
+ // delete the data yet because it may be part of the new name.
+ if (SymbolTableEntry)
+ SymbolTable.remove((EntryTy *)SymbolTableEntry);
+
// If this is just removing the name, we're done.
- if (Name.empty())
+ if (Name.empty()) {
+ if (SymbolTableEntry) {
+ // Delete the old string data.
+ ((EntryTy *)SymbolTableEntry)->Destroy(SymbolTable.getAllocator());
+ SymbolTableEntry = 0;
+ }
return;
+ }
// Look up the entry for the name.
- StringMapEntry<StructType*> *Entry =
- &getContext().pImpl->NamedStructTypes.GetOrCreateValue(Name);
+ EntryTy *Entry = &getContext().pImpl->NamedStructTypes.GetOrCreateValue(Name);
// While we have a name collision, try a random rename.
if (Entry->getValue()) {
// Okay, we found an entry that isn't used. It's us!
Entry->setValue(this);
-
+
+ // Delete the old string data.
+ if (SymbolTableEntry)
+ ((EntryTy *)SymbolTableEntry)->Destroy(SymbolTable.getAllocator());
SymbolTableEntry = Entry;
}
return create(Context, StringRef());
}
-
StructType *StructType::create(ArrayRef<Type*> Elements, StringRef Name,
bool isPacked) {
assert(!Elements.empty() &&
return llvm::StructType::create(Ctx, StructFields, Name);
}
+bool StructType::isSized() const {
+ if ((getSubclassData() & SCDB_IsSized) != 0)
+ return true;
+ if (isOpaque())
+ return false;
+
+ // Okay, our struct is sized if all of the elements are, but if one of the
+ // elements is opaque, the struct isn't sized *yet*, but may become sized in
+ // the future, so just bail out without caching.
+ for (element_iterator I = element_begin(), E = element_end(); I != E; ++I)
+ if (!(*I)->isSized())
+ return false;
+
+ // Here we cheat a bit and cast away const-ness. The goal is to memoize when
+ // we find a sized type, as types can only move from opaque to sized, not the
+ // other way.
+ const_cast<StructType*>(this)->setSubclassData(
+ getSubclassData() | SCDB_IsSized);
+ return true;
+}
StringRef StructType::getName() const {
assert(!isLiteral() && "Literal structs never have names");
return std::equal(element_begin(), element_end(), Other->element_begin());
}
-
/// getTypeByName - Return the type with the specified name, or null if there
/// is none by that name.
StructType *Module::getTypeByName(StringRef Name) const {
NumElements = NumEl;
}
-
ArrayType *ArrayType::get(Type *elementType, uint64_t NumElements) {
Type *ElementType = const_cast<Type*>(elementType);
assert(isValidElementType(ElementType) && "Invalid type for array element!");
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