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Diffstat (limited to 'lib/VMCore/Type.cpp')
| -rw-r--r-- | lib/VMCore/Type.cpp | 767 |
1 files changed, 0 insertions, 767 deletions
diff --git a/lib/VMCore/Type.cpp b/lib/VMCore/Type.cpp deleted file mode 100644 index 3c3058288c..0000000000 --- a/lib/VMCore/Type.cpp +++ /dev/null @@ -1,767 +0,0 @@ -//===-- Type.cpp - Implement the Type class -------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the Type class for the VMCore library. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Type.h" -#include "LLVMContextImpl.h" -#include "llvm/ADT/SmallString.h" -#include "llvm/Module.h" -#include <algorithm> -#include <cstdarg> -using namespace llvm; - -//===----------------------------------------------------------------------===// -// Type Class Implementation -//===----------------------------------------------------------------------===// - -Type *Type::getPrimitiveType(LLVMContext &C, TypeID IDNumber) { - switch (IDNumber) { - case VoidTyID : return getVoidTy(C); - case HalfTyID : return getHalfTy(C); - case FloatTyID : return getFloatTy(C); - case DoubleTyID : return getDoubleTy(C); - case X86_FP80TyID : return getX86_FP80Ty(C); - case FP128TyID : return getFP128Ty(C); - case PPC_FP128TyID : return getPPC_FP128Ty(C); - case LabelTyID : return getLabelTy(C); - case MetadataTyID : return getMetadataTy(C); - case X86_MMXTyID : return getX86_MMXTy(C); - default: - return 0; - } -} - -/// getScalarType - If this is a vector type, return the element type, -/// otherwise return this. -Type *Type::getScalarType() { - if (VectorType *VTy = dyn_cast<VectorType>(this)) - return VTy->getElementType(); - return this; -} - -const Type *Type::getScalarType() const { - if (const VectorType *VTy = dyn_cast<VectorType>(this)) - return VTy->getElementType(); - return this; -} - -/// isIntegerTy - Return true if this is an IntegerType of the specified width. -bool Type::isIntegerTy(unsigned Bitwidth) const { - return isIntegerTy() && cast<IntegerType>(this)->getBitWidth() == Bitwidth; -} - -// canLosslesslyBitCastTo - Return true if this type can be converted to -// 'Ty' without any reinterpretation of bits. For example, i8* to i32*. -// -bool Type::canLosslesslyBitCastTo(Type *Ty) const { - // Identity cast means no change so return true - if (this == Ty) - return true; - - // They are not convertible unless they are at least first class types - if (!this->isFirstClassType() || !Ty->isFirstClassType()) - return false; - - // Vector -> Vector conversions are always lossless if the two vector types - // have the same size, otherwise not. Also, 64-bit vector types can be - // converted to x86mmx. - if (const VectorType *thisPTy = dyn_cast<VectorType>(this)) { - if (const VectorType *thatPTy = dyn_cast<VectorType>(Ty)) - return thisPTy->getBitWidth() == thatPTy->getBitWidth(); - if (Ty->getTypeID() == Type::X86_MMXTyID && - thisPTy->getBitWidth() == 64) - return true; - } - - if (this->getTypeID() == Type::X86_MMXTyID) - if (const VectorType *thatPTy = dyn_cast<VectorType>(Ty)) - if (thatPTy->getBitWidth() == 64) - return true; - - // At this point we have only various mismatches of the first class types - // remaining and ptr->ptr. Just select the lossless conversions. Everything - // else is not lossless. - if (this->isPointerTy()) - return Ty->isPointerTy(); - return false; // Other types have no identity values -} - -bool Type::isEmptyTy() const { - const ArrayType *ATy = dyn_cast<ArrayType>(this); - if (ATy) { - unsigned NumElements = ATy->getNumElements(); - return NumElements == 0 || ATy->getElementType()->isEmptyTy(); - } - - const StructType *STy = dyn_cast<StructType>(this); - if (STy) { - unsigned NumElements = STy->getNumElements(); - for (unsigned i = 0; i < NumElements; ++i) - if (!STy->getElementType(i)->isEmptyTy()) - return false; - return true; - } - - return false; -} - -unsigned Type::getPrimitiveSizeInBits() const { - switch (getTypeID()) { - case Type::HalfTyID: return 16; - case Type::FloatTyID: return 32; - case Type::DoubleTyID: return 64; - case Type::X86_FP80TyID: return 80; - case Type::FP128TyID: return 128; - case Type::PPC_FP128TyID: return 128; - case Type::X86_MMXTyID: return 64; - case Type::IntegerTyID: return cast<IntegerType>(this)->getBitWidth(); - case Type::VectorTyID: return cast<VectorType>(this)->getBitWidth(); - default: return 0; - } -} - -/// getScalarSizeInBits - If this is a vector type, return the -/// getPrimitiveSizeInBits value for the element type. Otherwise return the -/// getPrimitiveSizeInBits value for this type. -unsigned Type::getScalarSizeInBits() { - return getScalarType()->getPrimitiveSizeInBits(); -} - -/// getFPMantissaWidth - Return the width of the mantissa of this type. This -/// is only valid on floating point types. If the FP type does not -/// have a stable mantissa (e.g. ppc long double), this method returns -1. -int Type::getFPMantissaWidth() const { - if (const VectorType *VTy = dyn_cast<VectorType>(this)) - return VTy->getElementType()->getFPMantissaWidth(); - assert(isFloatingPointTy() && "Not a floating point type!"); - if (getTypeID() == HalfTyID) return 11; - if (getTypeID() == FloatTyID) return 24; - if (getTypeID() == DoubleTyID) return 53; - if (getTypeID() == X86_FP80TyID) return 64; - if (getTypeID() == FP128TyID) return 113; - assert(getTypeID() == PPC_FP128TyID && "unknown fp type"); - return -1; -} - -/// isSizedDerivedType - Derived types like structures and arrays are sized -/// iff all of the members of the type are sized as well. Since asking for -/// their size is relatively uncommon, move this operation out of line. -bool Type::isSizedDerivedType() const { - if (this->isIntegerTy()) - return true; - - if (const ArrayType *ATy = dyn_cast<ArrayType>(this)) - return ATy->getElementType()->isSized(); - - if (const VectorType *VTy = dyn_cast<VectorType>(this)) - return VTy->getElementType()->isSized(); - - if (!this->isStructTy()) - return false; - - return cast<StructType>(this)->isSized(); -} - -//===----------------------------------------------------------------------===// -// Subclass Helper Methods -//===----------------------------------------------------------------------===// - -unsigned Type::getIntegerBitWidth() const { - return cast<IntegerType>(this)->getBitWidth(); -} - -bool Type::isFunctionVarArg() const { - return cast<FunctionType>(this)->isVarArg(); -} - -Type *Type::getFunctionParamType(unsigned i) const { - return cast<FunctionType>(this)->getParamType(i); -} - -unsigned Type::getFunctionNumParams() const { - return cast<FunctionType>(this)->getNumParams(); -} - -StringRef Type::getStructName() const { - return cast<StructType>(this)->getName(); -} - -unsigned Type::getStructNumElements() const { - return cast<StructType>(this)->getNumElements(); -} - -Type *Type::getStructElementType(unsigned N) const { - return cast<StructType>(this)->getElementType(N); -} - -Type *Type::getSequentialElementType() const { - return cast<SequentialType>(this)->getElementType(); -} - -uint64_t Type::getArrayNumElements() const { - return cast<ArrayType>(this)->getNumElements(); -} - -unsigned Type::getVectorNumElements() const { - return cast<VectorType>(this)->getNumElements(); -} - -unsigned Type::getPointerAddressSpace() const { - return cast<PointerType>(getScalarType())->getAddressSpace(); -} - - -//===----------------------------------------------------------------------===// -// Primitive 'Type' data -//===----------------------------------------------------------------------===// - -Type *Type::getVoidTy(LLVMContext &C) { return &C.pImpl->VoidTy; } -Type *Type::getLabelTy(LLVMContext &C) { return &C.pImpl->LabelTy; } -Type *Type::getHalfTy(LLVMContext &C) { return &C.pImpl->HalfTy; } -Type *Type::getFloatTy(LLVMContext &C) { return &C.pImpl->FloatTy; } -Type *Type::getDoubleTy(LLVMContext &C) { return &C.pImpl->DoubleTy; } -Type *Type::getMetadataTy(LLVMContext &C) { return &C.pImpl->MetadataTy; } -Type *Type::getX86_FP80Ty(LLVMContext &C) { return &C.pImpl->X86_FP80Ty; } -Type *Type::getFP128Ty(LLVMContext &C) { return &C.pImpl->FP128Ty; } -Type *Type::getPPC_FP128Ty(LLVMContext &C) { return &C.pImpl->PPC_FP128Ty; } -Type *Type::getX86_MMXTy(LLVMContext &C) { return &C.pImpl->X86_MMXTy; } - -IntegerType *Type::getInt1Ty(LLVMContext &C) { return &C.pImpl->Int1Ty; } -IntegerType *Type::getInt8Ty(LLVMContext &C) { return &C.pImpl->Int8Ty; } -IntegerType *Type::getInt16Ty(LLVMContext &C) { return &C.pImpl->Int16Ty; } -IntegerType *Type::getInt32Ty(LLVMContext &C) { return &C.pImpl->Int32Ty; } -IntegerType *Type::getInt64Ty(LLVMContext &C) { return &C.pImpl->Int64Ty; } - -IntegerType *Type::getIntNTy(LLVMContext &C, unsigned N) { - return IntegerType::get(C, N); -} - -PointerType *Type::getHalfPtrTy(LLVMContext &C, unsigned AS) { - return getHalfTy(C)->getPointerTo(AS); -} - -PointerType *Type::getFloatPtrTy(LLVMContext &C, unsigned AS) { - return getFloatTy(C)->getPointerTo(AS); -} - -PointerType *Type::getDoublePtrTy(LLVMContext &C, unsigned AS) { - return getDoubleTy(C)->getPointerTo(AS); -} - -PointerType *Type::getX86_FP80PtrTy(LLVMContext &C, unsigned AS) { - return getX86_FP80Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getFP128PtrTy(LLVMContext &C, unsigned AS) { - return getFP128Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getPPC_FP128PtrTy(LLVMContext &C, unsigned AS) { - return getPPC_FP128Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getX86_MMXPtrTy(LLVMContext &C, unsigned AS) { - return getX86_MMXTy(C)->getPointerTo(AS); -} - -PointerType *Type::getIntNPtrTy(LLVMContext &C, unsigned N, unsigned AS) { - return getIntNTy(C, N)->getPointerTo(AS); -} - -PointerType *Type::getInt1PtrTy(LLVMContext &C, unsigned AS) { - return getInt1Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getInt8PtrTy(LLVMContext &C, unsigned AS) { - return getInt8Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getInt16PtrTy(LLVMContext &C, unsigned AS) { - return getInt16Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getInt32PtrTy(LLVMContext &C, unsigned AS) { - return getInt32Ty(C)->getPointerTo(AS); -} - -PointerType *Type::getInt64PtrTy(LLVMContext &C, unsigned AS) { - return getInt64Ty(C)->getPointerTo(AS); -} - - -//===----------------------------------------------------------------------===// -// IntegerType Implementation -//===----------------------------------------------------------------------===// - -IntegerType *IntegerType::get(LLVMContext &C, unsigned NumBits) { - assert(NumBits >= MIN_INT_BITS && "bitwidth too small"); - assert(NumBits <= MAX_INT_BITS && "bitwidth too large"); - - // Check for the built-in integer types - switch (NumBits) { - case 1: return cast<IntegerType>(Type::getInt1Ty(C)); - case 8: return cast<IntegerType>(Type::getInt8Ty(C)); - case 16: return cast<IntegerType>(Type::getInt16Ty(C)); - case 32: return cast<IntegerType>(Type::getInt32Ty(C)); - case 64: return cast<IntegerType>(Type::getInt64Ty(C)); - default: - break; - } - - IntegerType *&Entry = C.pImpl->IntegerTypes[NumBits]; - - if (Entry == 0) - Entry = new (C.pImpl->TypeAllocator) IntegerType(C, NumBits); - - return Entry; -} - -bool IntegerType::isPowerOf2ByteWidth() const { - unsigned BitWidth = getBitWidth(); - return (BitWidth > 7) && isPowerOf2_32(BitWidth); -} - -APInt IntegerType::getMask() const { - return APInt::getAllOnesValue(getBitWidth()); -} - -//===----------------------------------------------------------------------===// -// FunctionType Implementation -//===----------------------------------------------------------------------===// - -FunctionType::FunctionType(Type *Result, ArrayRef<Type*> Params, - bool IsVarArgs) - : Type(Result->getContext(), FunctionTyID) { - Type **SubTys = reinterpret_cast<Type**>(this+1); - assert(isValidReturnType(Result) && "invalid return type for function"); - setSubclassData(IsVarArgs); - - SubTys[0] = const_cast<Type*>(Result); - - for (unsigned i = 0, e = Params.size(); i != e; ++i) { - assert(isValidArgumentType(Params[i]) && - "Not a valid type for function argument!"); - SubTys[i+1] = Params[i]; - } - - ContainedTys = SubTys; - NumContainedTys = Params.size() + 1; // + 1 for result type -} - -// FunctionType::get - The factory function for the FunctionType class. -FunctionType *FunctionType::get(Type *ReturnType, - ArrayRef<Type*> Params, bool isVarArg) { - LLVMContextImpl *pImpl = ReturnType->getContext().pImpl; - 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*) * (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) { - return !RetTy->isFunctionTy() && !RetTy->isLabelTy() && - !RetTy->isMetadataTy(); -} - -/// isValidArgumentType - Return true if the specified type is valid as an -/// argument type. -bool FunctionType::isValidArgumentType(Type *ArgTy) { - return ArgTy->isFirstClassType(); -} - -//===----------------------------------------------------------------------===// -// StructType Implementation -//===----------------------------------------------------------------------===// - -// Primitive Constructors. - -StructType *StructType::get(LLVMContext &Context, ArrayRef<Type*> ETypes, - bool isPacked) { - 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; - } - - return ST; -} - -void StructType::setBody(ArrayRef<Type*> Elements, bool isPacked) { - assert(isOpaque() && "Struct body already set!"); - - setSubclassData(getSubclassData() | SCDB_HasBody); - if (isPacked) - setSubclassData(getSubclassData() | SCDB_Packed); - - unsigned NumElements = Elements.size(); - Type **Elts = getContext().pImpl->TypeAllocator.Allocate<Type*>(NumElements); - memcpy(Elts, Elements.data(), sizeof(Elements[0]) * NumElements); - - ContainedTys = Elts; - NumContainedTys = NumElements; -} - -void StructType::setName(StringRef Name) { - if (Name == getName()) return; - - 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 (SymbolTableEntry) { - // Delete the old string data. - ((EntryTy *)SymbolTableEntry)->Destroy(SymbolTable.getAllocator()); - SymbolTableEntry = 0; - } - return; - } - - // Look up the entry for the name. - EntryTy *Entry = &getContext().pImpl->NamedStructTypes.GetOrCreateValue(Name); - - // While we have a name collision, try a random rename. - if (Entry->getValue()) { - SmallString<64> TempStr(Name); - TempStr.push_back('.'); - raw_svector_ostream TmpStream(TempStr); - unsigned NameSize = Name.size(); - - do { - TempStr.resize(NameSize + 1); - TmpStream.resync(); - TmpStream << getContext().pImpl->NamedStructTypesUniqueID++; - - Entry = &getContext().pImpl-> - NamedStructTypes.GetOrCreateValue(TmpStream.str()); - } while (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; -} - -//===----------------------------------------------------------------------===// -// StructType Helper functions. - -StructType *StructType::create(LLVMContext &Context, StringRef Name) { - StructType *ST = new (Context.pImpl->TypeAllocator) StructType(Context); - if (!Name.empty()) - ST->setName(Name); - return ST; -} - -StructType *StructType::get(LLVMContext &Context, bool isPacked) { - return get(Context, llvm::ArrayRef<Type*>(), isPacked); -} - -StructType *StructType::get(Type *type, ...) { - assert(type != 0 && "Cannot create a struct type with no elements with this"); - LLVMContext &Ctx = type->getContext(); - va_list ap; - SmallVector<llvm::Type*, 8> StructFields; - va_start(ap, type); - while (type) { - StructFields.push_back(type); - type = va_arg(ap, llvm::Type*); - } - return llvm::StructType::get(Ctx, StructFields); -} - -StructType *StructType::create(LLVMContext &Context, ArrayRef<Type*> Elements, - StringRef Name, bool isPacked) { - StructType *ST = create(Context, Name); - ST->setBody(Elements, isPacked); - return ST; -} - -StructType *StructType::create(LLVMContext &Context, ArrayRef<Type*> Elements) { - return create(Context, Elements, StringRef()); -} - -StructType *StructType::create(LLVMContext &Context) { - return create(Context, StringRef()); -} - -StructType *StructType::create(ArrayRef<Type*> Elements, StringRef Name, - bool isPacked) { - assert(!Elements.empty() && - "This method may not be invoked with an empty list"); - return create(Elements[0]->getContext(), Elements, Name, isPacked); -} - -StructType *StructType::create(ArrayRef<Type*> Elements) { - assert(!Elements.empty() && - "This method may not be invoked with an empty list"); - return create(Elements[0]->getContext(), Elements, StringRef()); -} - -StructType *StructType::create(StringRef Name, Type *type, ...) { - assert(type != 0 && "Cannot create a struct type with no elements with this"); - LLVMContext &Ctx = type->getContext(); - va_list ap; - SmallVector<llvm::Type*, 8> StructFields; - va_start(ap, type); - while (type) { - StructFields.push_back(type); - type = va_arg(ap, llvm::Type*); - } - 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"); - if (SymbolTableEntry == 0) return StringRef(); - - return ((StringMapEntry<StructType*> *)SymbolTableEntry)->getKey(); -} - -void StructType::setBody(Type *type, ...) { - assert(type != 0 && "Cannot create a struct type with no elements with this"); - va_list ap; - SmallVector<llvm::Type*, 8> StructFields; - va_start(ap, type); - while (type) { - StructFields.push_back(type); - type = va_arg(ap, llvm::Type*); - } - setBody(StructFields); -} - -bool StructType::isValidElementType(Type *ElemTy) { - return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() && - !ElemTy->isMetadataTy() && !ElemTy->isFunctionTy(); -} - -/// isLayoutIdentical - Return true if this is layout identical to the -/// specified struct. -bool StructType::isLayoutIdentical(StructType *Other) const { - if (this == Other) return true; - - if (isPacked() != Other->isPacked() || - getNumElements() != Other->getNumElements()) - return false; - - 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 { - StringMap<StructType*>::iterator I = - getContext().pImpl->NamedStructTypes.find(Name); - if (I != getContext().pImpl->NamedStructTypes.end()) - return I->second; - return 0; -} - - -//===----------------------------------------------------------------------===// -// CompositeType Implementation -//===----------------------------------------------------------------------===// - -Type *CompositeType::getTypeAtIndex(const Value *V) { - if (StructType *STy = dyn_cast<StructType>(this)) { - unsigned Idx = - (unsigned)cast<Constant>(V)->getUniqueInteger().getZExtValue(); - assert(indexValid(Idx) && "Invalid structure index!"); - return STy->getElementType(Idx); - } - - return cast<SequentialType>(this)->getElementType(); -} -Type *CompositeType::getTypeAtIndex(unsigned Idx) { - if (StructType *STy = dyn_cast<StructType>(this)) { - assert(indexValid(Idx) && "Invalid structure index!"); - return STy->getElementType(Idx); - } - - return cast<SequentialType>(this)->getElementType(); -} -bool CompositeType::indexValid(const Value *V) const { - if (const StructType *STy = dyn_cast<StructType>(this)) { - // Structure indexes require (vectors of) 32-bit integer constants. In the - // vector case all of the indices must be equal. - if (!V->getType()->getScalarType()->isIntegerTy(32)) - return false; - const Constant *C = dyn_cast<Constant>(V); - if (C && V->getType()->isVectorTy()) - C = C->getSplatValue(); - const ConstantInt *CU = dyn_cast_or_null<ConstantInt>(C); - return CU && CU->getZExtValue() < STy->getNumElements(); - } - - // Sequential types can be indexed by any integer. - return V->getType()->isIntOrIntVectorTy(); -} - -bool CompositeType::indexValid(unsigned Idx) const { - if (const StructType *STy = dyn_cast<StructType>(this)) - return Idx < STy->getNumElements(); - // Sequential types can be indexed by any integer. - return true; -} - - -//===----------------------------------------------------------------------===// -// ArrayType Implementation -//===----------------------------------------------------------------------===// - -ArrayType::ArrayType(Type *ElType, uint64_t NumEl) - : SequentialType(ArrayTyID, ElType) { - NumElements = NumEl; -} - -ArrayType *ArrayType::get(Type *elementType, uint64_t NumElements) { - Type *ElementType = const_cast<Type*>(elementType); - assert(isValidElementType(ElementType) && "Invalid type for array element!"); - - LLVMContextImpl *pImpl = ElementType->getContext().pImpl; - ArrayType *&Entry = - pImpl->ArrayTypes[std::make_pair(ElementType, NumElements)]; - - if (Entry == 0) - Entry = new (pImpl->TypeAllocator) ArrayType(ElementType, NumElements); - return Entry; -} - -bool ArrayType::isValidElementType(Type *ElemTy) { - return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() && - !ElemTy->isMetadataTy() && !ElemTy->isFunctionTy(); -} - -//===----------------------------------------------------------------------===// -// VectorType Implementation -//===----------------------------------------------------------------------===// - -VectorType::VectorType(Type *ElType, unsigned NumEl) - : SequentialType(VectorTyID, ElType) { - NumElements = NumEl; -} - -VectorType *VectorType::get(Type *elementType, unsigned NumElements) { - Type *ElementType = const_cast<Type*>(elementType); - assert(NumElements > 0 && "#Elements of a VectorType must be greater than 0"); - assert(isValidElementType(ElementType) && - "Elements of a VectorType must be a primitive type"); - - LLVMContextImpl *pImpl = ElementType->getContext().pImpl; - VectorType *&Entry = ElementType->getContext().pImpl - ->VectorTypes[std::make_pair(ElementType, NumElements)]; - - if (Entry == 0) - Entry = new (pImpl->TypeAllocator) VectorType(ElementType, NumElements); - return Entry; -} - -bool VectorType::isValidElementType(Type *ElemTy) { - return ElemTy->isIntegerTy() || ElemTy->isFloatingPointTy() || - ElemTy->isPointerTy(); -} - -//===----------------------------------------------------------------------===// -// PointerType Implementation -//===----------------------------------------------------------------------===// - -PointerType *PointerType::get(Type *EltTy, unsigned AddressSpace) { - assert(EltTy && "Can't get a pointer to <null> type!"); - assert(isValidElementType(EltTy) && "Invalid type for pointer element!"); - - LLVMContextImpl *CImpl = EltTy->getContext().pImpl; - - // Since AddressSpace #0 is the common case, we special case it. - PointerType *&Entry = AddressSpace == 0 ? CImpl->PointerTypes[EltTy] - : CImpl->ASPointerTypes[std::make_pair(EltTy, AddressSpace)]; - - if (Entry == 0) - Entry = new (CImpl->TypeAllocator) PointerType(EltTy, AddressSpace); - return Entry; -} - - -PointerType::PointerType(Type *E, unsigned AddrSpace) - : SequentialType(PointerTyID, E) { -#ifndef NDEBUG - const unsigned oldNCT = NumContainedTys; -#endif - setSubclassData(AddrSpace); - // Check for miscompile. PR11652. - assert(oldNCT == NumContainedTys && "bitfield written out of bounds?"); -} - -PointerType *Type::getPointerTo(unsigned addrs) { - return PointerType::get(this, addrs); -} - -bool PointerType::isValidElementType(Type *ElemTy) { - return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() && - !ElemTy->isMetadataTy(); -} |