1 //===-- Type.cpp - Implement the Type class -------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Type class for the VMCore library.
12 //===----------------------------------------------------------------------===//
14 #include "LLVMContextImpl.h"
15 #include "llvm/Module.h"
18 #include "llvm/ADT/SmallString.h"
21 //===----------------------------------------------------------------------===//
22 // Type Class Implementation
23 //===----------------------------------------------------------------------===//
25 Type *Type::getPrimitiveType(LLVMContext &C, TypeID IDNumber) {
27 case VoidTyID : return getVoidTy(C);
28 case HalfTyID : return getHalfTy(C);
29 case FloatTyID : return getFloatTy(C);
30 case DoubleTyID : return getDoubleTy(C);
31 case X86_FP80TyID : return getX86_FP80Ty(C);
32 case FP128TyID : return getFP128Ty(C);
33 case PPC_FP128TyID : return getPPC_FP128Ty(C);
34 case LabelTyID : return getLabelTy(C);
35 case MetadataTyID : return getMetadataTy(C);
36 case X86_MMXTyID : return getX86_MMXTy(C);
42 /// getScalarType - If this is a vector type, return the element type,
43 /// otherwise return this.
44 Type *Type::getScalarType() {
45 if (VectorType *VTy = dyn_cast<VectorType>(this))
46 return VTy->getElementType();
50 /// isIntegerTy - Return true if this is an IntegerType of the specified width.
51 bool Type::isIntegerTy(unsigned Bitwidth) const {
52 return isIntegerTy() && cast<IntegerType>(this)->getBitWidth() == Bitwidth;
55 /// isIntOrIntVectorTy - Return true if this is an integer type or a vector of
58 bool Type::isIntOrIntVectorTy() const {
61 if (getTypeID() != Type::VectorTyID) return false;
63 return cast<VectorType>(this)->getElementType()->isIntegerTy();
66 /// isFPOrFPVectorTy - Return true if this is a FP type or a vector of FP types.
68 bool Type::isFPOrFPVectorTy() const {
69 if (getTypeID() == Type::HalfTyID || getTypeID() == Type::FloatTyID ||
70 getTypeID() == Type::DoubleTyID ||
71 getTypeID() == Type::FP128TyID || getTypeID() == Type::X86_FP80TyID ||
72 getTypeID() == Type::PPC_FP128TyID)
74 if (getTypeID() != Type::VectorTyID) return false;
76 return cast<VectorType>(this)->getElementType()->isFloatingPointTy();
79 // canLosslesslyBitCastTo - Return true if this type can be converted to
80 // 'Ty' without any reinterpretation of bits. For example, i8* to i32*.
82 bool Type::canLosslesslyBitCastTo(Type *Ty) const {
83 // Identity cast means no change so return true
87 // They are not convertible unless they are at least first class types
88 if (!this->isFirstClassType() || !Ty->isFirstClassType())
91 // Vector -> Vector conversions are always lossless if the two vector types
92 // have the same size, otherwise not. Also, 64-bit vector types can be
93 // converted to x86mmx.
94 if (const VectorType *thisPTy = dyn_cast<VectorType>(this)) {
95 if (const VectorType *thatPTy = dyn_cast<VectorType>(Ty))
96 return thisPTy->getBitWidth() == thatPTy->getBitWidth();
97 if (Ty->getTypeID() == Type::X86_MMXTyID &&
98 thisPTy->getBitWidth() == 64)
102 if (this->getTypeID() == Type::X86_MMXTyID)
103 if (const VectorType *thatPTy = dyn_cast<VectorType>(Ty))
104 if (thatPTy->getBitWidth() == 64)
107 // At this point we have only various mismatches of the first class types
108 // remaining and ptr->ptr. Just select the lossless conversions. Everything
109 // else is not lossless.
110 if (this->isPointerTy())
111 return Ty->isPointerTy();
112 return false; // Other types have no identity values
115 bool Type::isEmptyTy() const {
116 const ArrayType *ATy = dyn_cast<ArrayType>(this);
118 unsigned NumElements = ATy->getNumElements();
119 return NumElements == 0 || ATy->getElementType()->isEmptyTy();
122 const StructType *STy = dyn_cast<StructType>(this);
124 unsigned NumElements = STy->getNumElements();
125 for (unsigned i = 0; i < NumElements; ++i)
126 if (!STy->getElementType(i)->isEmptyTy())
134 unsigned Type::getPrimitiveSizeInBits() const {
135 switch (getTypeID()) {
136 case Type::HalfTyID: return 16;
137 case Type::FloatTyID: return 32;
138 case Type::DoubleTyID: return 64;
139 case Type::X86_FP80TyID: return 80;
140 case Type::FP128TyID: return 128;
141 case Type::PPC_FP128TyID: return 128;
142 case Type::X86_MMXTyID: return 64;
143 case Type::IntegerTyID: return cast<IntegerType>(this)->getBitWidth();
144 case Type::VectorTyID: return cast<VectorType>(this)->getBitWidth();
149 /// getScalarSizeInBits - If this is a vector type, return the
150 /// getPrimitiveSizeInBits value for the element type. Otherwise return the
151 /// getPrimitiveSizeInBits value for this type.
152 unsigned Type::getScalarSizeInBits() {
153 return getScalarType()->getPrimitiveSizeInBits();
156 /// getFPMantissaWidth - Return the width of the mantissa of this type. This
157 /// is only valid on floating point types. If the FP type does not
158 /// have a stable mantissa (e.g. ppc long double), this method returns -1.
159 int Type::getFPMantissaWidth() const {
160 if (const VectorType *VTy = dyn_cast<VectorType>(this))
161 return VTy->getElementType()->getFPMantissaWidth();
162 assert(isFloatingPointTy() && "Not a floating point type!");
163 if (getTypeID() == HalfTyID) return 11;
164 if (getTypeID() == FloatTyID) return 24;
165 if (getTypeID() == DoubleTyID) return 53;
166 if (getTypeID() == X86_FP80TyID) return 64;
167 if (getTypeID() == FP128TyID) return 113;
168 assert(getTypeID() == PPC_FP128TyID && "unknown fp type");
172 /// isSizedDerivedType - Derived types like structures and arrays are sized
173 /// iff all of the members of the type are sized as well. Since asking for
174 /// their size is relatively uncommon, move this operation out of line.
175 bool Type::isSizedDerivedType() const {
176 if (this->isIntegerTy())
179 if (const ArrayType *ATy = dyn_cast<ArrayType>(this))
180 return ATy->getElementType()->isSized();
182 if (const VectorType *VTy = dyn_cast<VectorType>(this))
183 return VTy->getElementType()->isSized();
185 if (!this->isStructTy())
188 // Opaque structs have no size.
189 if (cast<StructType>(this)->isOpaque())
192 // Okay, our struct is sized if all of the elements are.
193 for (subtype_iterator I = subtype_begin(), E = subtype_end(); I != E; ++I)
194 if (!(*I)->isSized())
200 //===----------------------------------------------------------------------===//
201 // Subclass Helper Methods
202 //===----------------------------------------------------------------------===//
204 unsigned Type::getIntegerBitWidth() const {
205 return cast<IntegerType>(this)->getBitWidth();
208 bool Type::isFunctionVarArg() const {
209 return cast<FunctionType>(this)->isVarArg();
212 Type *Type::getFunctionParamType(unsigned i) const {
213 return cast<FunctionType>(this)->getParamType(i);
216 unsigned Type::getFunctionNumParams() const {
217 return cast<FunctionType>(this)->getNumParams();
220 Type *Type::getSequentialElementType() const {
221 return cast<SequentialType>(this)->getElementType();
224 uint64_t Type::getArrayNumElements() const {
225 return cast<ArrayType>(this)->getNumElements();
228 unsigned Type::getVectorNumElements() const {
229 return cast<VectorType>(this)->getNumElements();
232 unsigned Type::getPointerAddressSpace() const {
233 return cast<PointerType>(this)->getAddressSpace();
239 //===----------------------------------------------------------------------===//
240 // Primitive 'Type' data
241 //===----------------------------------------------------------------------===//
243 Type *Type::getVoidTy(LLVMContext &C) { return &C.pImpl->VoidTy; }
244 Type *Type::getLabelTy(LLVMContext &C) { return &C.pImpl->LabelTy; }
245 Type *Type::getHalfTy(LLVMContext &C) { return &C.pImpl->HalfTy; }
246 Type *Type::getFloatTy(LLVMContext &C) { return &C.pImpl->FloatTy; }
247 Type *Type::getDoubleTy(LLVMContext &C) { return &C.pImpl->DoubleTy; }
248 Type *Type::getMetadataTy(LLVMContext &C) { return &C.pImpl->MetadataTy; }
249 Type *Type::getX86_FP80Ty(LLVMContext &C) { return &C.pImpl->X86_FP80Ty; }
250 Type *Type::getFP128Ty(LLVMContext &C) { return &C.pImpl->FP128Ty; }
251 Type *Type::getPPC_FP128Ty(LLVMContext &C) { return &C.pImpl->PPC_FP128Ty; }
252 Type *Type::getX86_MMXTy(LLVMContext &C) { return &C.pImpl->X86_MMXTy; }
254 IntegerType *Type::getInt1Ty(LLVMContext &C) { return &C.pImpl->Int1Ty; }
255 IntegerType *Type::getInt8Ty(LLVMContext &C) { return &C.pImpl->Int8Ty; }
256 IntegerType *Type::getInt16Ty(LLVMContext &C) { return &C.pImpl->Int16Ty; }
257 IntegerType *Type::getInt32Ty(LLVMContext &C) { return &C.pImpl->Int32Ty; }
258 IntegerType *Type::getInt64Ty(LLVMContext &C) { return &C.pImpl->Int64Ty; }
260 IntegerType *Type::getIntNTy(LLVMContext &C, unsigned N) {
261 return IntegerType::get(C, N);
264 PointerType *Type::getHalfPtrTy(LLVMContext &C, unsigned AS) {
265 return getHalfTy(C)->getPointerTo(AS);
268 PointerType *Type::getFloatPtrTy(LLVMContext &C, unsigned AS) {
269 return getFloatTy(C)->getPointerTo(AS);
272 PointerType *Type::getDoublePtrTy(LLVMContext &C, unsigned AS) {
273 return getDoubleTy(C)->getPointerTo(AS);
276 PointerType *Type::getX86_FP80PtrTy(LLVMContext &C, unsigned AS) {
277 return getX86_FP80Ty(C)->getPointerTo(AS);
280 PointerType *Type::getFP128PtrTy(LLVMContext &C, unsigned AS) {
281 return getFP128Ty(C)->getPointerTo(AS);
284 PointerType *Type::getPPC_FP128PtrTy(LLVMContext &C, unsigned AS) {
285 return getPPC_FP128Ty(C)->getPointerTo(AS);
288 PointerType *Type::getX86_MMXPtrTy(LLVMContext &C, unsigned AS) {
289 return getX86_MMXTy(C)->getPointerTo(AS);
292 PointerType *Type::getIntNPtrTy(LLVMContext &C, unsigned N, unsigned AS) {
293 return getIntNTy(C, N)->getPointerTo(AS);
296 PointerType *Type::getInt1PtrTy(LLVMContext &C, unsigned AS) {
297 return getInt1Ty(C)->getPointerTo(AS);
300 PointerType *Type::getInt8PtrTy(LLVMContext &C, unsigned AS) {
301 return getInt8Ty(C)->getPointerTo(AS);
304 PointerType *Type::getInt16PtrTy(LLVMContext &C, unsigned AS) {
305 return getInt16Ty(C)->getPointerTo(AS);
308 PointerType *Type::getInt32PtrTy(LLVMContext &C, unsigned AS) {
309 return getInt32Ty(C)->getPointerTo(AS);
312 PointerType *Type::getInt64PtrTy(LLVMContext &C, unsigned AS) {
313 return getInt64Ty(C)->getPointerTo(AS);
317 //===----------------------------------------------------------------------===//
318 // IntegerType Implementation
319 //===----------------------------------------------------------------------===//
321 IntegerType *IntegerType::get(LLVMContext &C, unsigned NumBits) {
322 assert(NumBits >= MIN_INT_BITS && "bitwidth too small");
323 assert(NumBits <= MAX_INT_BITS && "bitwidth too large");
325 // Check for the built-in integer types
327 case 1: return cast<IntegerType>(Type::getInt1Ty(C));
328 case 8: return cast<IntegerType>(Type::getInt8Ty(C));
329 case 16: return cast<IntegerType>(Type::getInt16Ty(C));
330 case 32: return cast<IntegerType>(Type::getInt32Ty(C));
331 case 64: return cast<IntegerType>(Type::getInt64Ty(C));
336 IntegerType *&Entry = C.pImpl->IntegerTypes[NumBits];
339 Entry = new (C.pImpl->TypeAllocator) IntegerType(C, NumBits);
344 bool IntegerType::isPowerOf2ByteWidth() const {
345 unsigned BitWidth = getBitWidth();
346 return (BitWidth > 7) && isPowerOf2_32(BitWidth);
349 APInt IntegerType::getMask() const {
350 return APInt::getAllOnesValue(getBitWidth());
353 //===----------------------------------------------------------------------===//
354 // FunctionType Implementation
355 //===----------------------------------------------------------------------===//
357 FunctionType::FunctionType(Type *Result, ArrayRef<Type*> Params,
359 : Type(Result->getContext(), FunctionTyID) {
360 Type **SubTys = reinterpret_cast<Type**>(this+1);
361 assert(isValidReturnType(Result) && "invalid return type for function");
362 setSubclassData(IsVarArgs);
364 SubTys[0] = const_cast<Type*>(Result);
366 for (unsigned i = 0, e = Params.size(); i != e; ++i) {
367 assert(isValidArgumentType(Params[i]) &&
368 "Not a valid type for function argument!");
369 SubTys[i+1] = Params[i];
372 ContainedTys = SubTys;
373 NumContainedTys = Params.size() + 1; // + 1 for result type
376 // FunctionType::get - The factory function for the FunctionType class.
377 FunctionType *FunctionType::get(Type *ReturnType,
378 ArrayRef<Type*> Params, bool isVarArg) {
379 // TODO: This is brutally slow.
380 std::vector<Type*> Key;
381 Key.reserve(Params.size()+2);
382 Key.push_back(const_cast<Type*>(ReturnType));
383 for (unsigned i = 0, e = Params.size(); i != e; ++i)
384 Key.push_back(const_cast<Type*>(Params[i]));
388 LLVMContextImpl *pImpl = ReturnType->getContext().pImpl;
389 FunctionType *&FT = pImpl->FunctionTypes[Key];
392 FT = (FunctionType*) pImpl->TypeAllocator.
393 Allocate(sizeof(FunctionType) + sizeof(Type*)*(Params.size()+1),
394 AlignOf<FunctionType>::Alignment);
395 new (FT) FunctionType(ReturnType, Params, isVarArg);
402 FunctionType *FunctionType::get(Type *Result, bool isVarArg) {
403 return get(Result, ArrayRef<Type *>(), isVarArg);
407 /// isValidReturnType - Return true if the specified type is valid as a return
409 bool FunctionType::isValidReturnType(Type *RetTy) {
410 return !RetTy->isFunctionTy() && !RetTy->isLabelTy() &&
411 !RetTy->isMetadataTy();
414 /// isValidArgumentType - Return true if the specified type is valid as an
416 bool FunctionType::isValidArgumentType(Type *ArgTy) {
417 return ArgTy->isFirstClassType();
420 //===----------------------------------------------------------------------===//
421 // StructType Implementation
422 //===----------------------------------------------------------------------===//
424 // Primitive Constructors.
426 StructType *StructType::get(LLVMContext &Context, ArrayRef<Type*> ETypes,
428 // FIXME: std::vector is horribly inefficient for this probe.
429 std::vector<Type*> Key;
430 for (unsigned i = 0, e = ETypes.size(); i != e; ++i) {
431 assert(isValidElementType(ETypes[i]) &&
432 "Invalid type for structure element!");
433 Key.push_back(ETypes[i]);
438 StructType *&ST = Context.pImpl->AnonStructTypes[Key];
441 // Value not found. Create a new type!
442 ST = new (Context.pImpl->TypeAllocator) StructType(Context);
443 ST->setSubclassData(SCDB_IsLiteral); // Literal struct.
444 ST->setBody(ETypes, isPacked);
448 void StructType::setBody(ArrayRef<Type*> Elements, bool isPacked) {
449 assert(isOpaque() && "Struct body already set!");
451 setSubclassData(getSubclassData() | SCDB_HasBody);
453 setSubclassData(getSubclassData() | SCDB_Packed);
455 Type **Elts = getContext().pImpl->
456 TypeAllocator.Allocate<Type*>(Elements.size());
457 memcpy(Elts, Elements.data(), sizeof(Elements[0])*Elements.size());
460 NumContainedTys = Elements.size();
463 void StructType::setName(StringRef Name) {
464 if (Name == getName()) return;
466 // If this struct already had a name, remove its symbol table entry.
467 if (SymbolTableEntry) {
468 getContext().pImpl->NamedStructTypes.erase(getName());
469 SymbolTableEntry = 0;
472 // If this is just removing the name, we're done.
476 // Look up the entry for the name.
477 StringMapEntry<StructType*> *Entry =
478 &getContext().pImpl->NamedStructTypes.GetOrCreateValue(Name);
480 // While we have a name collision, try a random rename.
481 if (Entry->getValue()) {
482 SmallString<64> TempStr(Name);
483 TempStr.push_back('.');
484 raw_svector_ostream TmpStream(TempStr);
487 TempStr.resize(Name.size()+1);
489 TmpStream << getContext().pImpl->NamedStructTypesUniqueID++;
491 Entry = &getContext().pImpl->
492 NamedStructTypes.GetOrCreateValue(TmpStream.str());
493 } while (Entry->getValue());
496 // Okay, we found an entry that isn't used. It's us!
497 Entry->setValue(this);
499 SymbolTableEntry = Entry;
502 //===----------------------------------------------------------------------===//
503 // StructType Helper functions.
505 StructType *StructType::create(LLVMContext &Context, StringRef Name) {
506 StructType *ST = new (Context.pImpl->TypeAllocator) StructType(Context);
512 StructType *StructType::get(LLVMContext &Context, bool isPacked) {
513 return get(Context, llvm::ArrayRef<Type*>(), isPacked);
516 StructType *StructType::get(Type *type, ...) {
517 assert(type != 0 && "Cannot create a struct type with no elements with this");
518 LLVMContext &Ctx = type->getContext();
520 SmallVector<llvm::Type*, 8> StructFields;
523 StructFields.push_back(type);
524 type = va_arg(ap, llvm::Type*);
526 return llvm::StructType::get(Ctx, StructFields);
529 StructType *StructType::create(LLVMContext &Context, ArrayRef<Type*> Elements,
530 StringRef Name, bool isPacked) {
531 StructType *ST = create(Context, Name);
532 ST->setBody(Elements, isPacked);
536 StructType *StructType::create(LLVMContext &Context, ArrayRef<Type*> Elements) {
537 return create(Context, Elements, StringRef());
540 StructType *StructType::create(LLVMContext &Context) {
541 return create(Context, StringRef());
545 StructType *StructType::create(ArrayRef<Type*> Elements, StringRef Name,
547 assert(!Elements.empty() &&
548 "This method may not be invoked with an empty list");
549 return create(Elements[0]->getContext(), Elements, Name, isPacked);
552 StructType *StructType::create(ArrayRef<Type*> Elements) {
553 assert(!Elements.empty() &&
554 "This method may not be invoked with an empty list");
555 return create(Elements[0]->getContext(), Elements, StringRef());
558 StructType *StructType::create(StringRef Name, Type *type, ...) {
559 assert(type != 0 && "Cannot create a struct type with no elements with this");
560 LLVMContext &Ctx = type->getContext();
562 SmallVector<llvm::Type*, 8> StructFields;
565 StructFields.push_back(type);
566 type = va_arg(ap, llvm::Type*);
568 return llvm::StructType::create(Ctx, StructFields, Name);
572 StringRef StructType::getName() const {
573 assert(!isLiteral() && "Literal structs never have names");
574 if (SymbolTableEntry == 0) return StringRef();
576 return ((StringMapEntry<StructType*> *)SymbolTableEntry)->getKey();
579 void StructType::setBody(Type *type, ...) {
580 assert(type != 0 && "Cannot create a struct type with no elements with this");
582 SmallVector<llvm::Type*, 8> StructFields;
585 StructFields.push_back(type);
586 type = va_arg(ap, llvm::Type*);
588 setBody(StructFields);
591 bool StructType::isValidElementType(Type *ElemTy) {
592 return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() &&
593 !ElemTy->isMetadataTy() && !ElemTy->isFunctionTy();
596 /// isLayoutIdentical - Return true if this is layout identical to the
597 /// specified struct.
598 bool StructType::isLayoutIdentical(StructType *Other) const {
599 if (this == Other) return true;
601 if (isPacked() != Other->isPacked() ||
602 getNumElements() != Other->getNumElements())
605 return std::equal(element_begin(), element_end(), Other->element_begin());
609 /// getTypeByName - Return the type with the specified name, or null if there
610 /// is none by that name.
611 StructType *Module::getTypeByName(StringRef Name) const {
612 StringMap<StructType*>::iterator I =
613 getContext().pImpl->NamedStructTypes.find(Name);
614 if (I != getContext().pImpl->NamedStructTypes.end())
620 //===----------------------------------------------------------------------===//
621 // CompositeType Implementation
622 //===----------------------------------------------------------------------===//
624 Type *CompositeType::getTypeAtIndex(const Value *V) {
625 if (StructType *STy = dyn_cast<StructType>(this)) {
626 unsigned Idx = (unsigned)cast<ConstantInt>(V)->getZExtValue();
627 assert(indexValid(Idx) && "Invalid structure index!");
628 return STy->getElementType(Idx);
631 return cast<SequentialType>(this)->getElementType();
633 Type *CompositeType::getTypeAtIndex(unsigned Idx) {
634 if (StructType *STy = dyn_cast<StructType>(this)) {
635 assert(indexValid(Idx) && "Invalid structure index!");
636 return STy->getElementType(Idx);
639 return cast<SequentialType>(this)->getElementType();
641 bool CompositeType::indexValid(const Value *V) const {
642 if (const StructType *STy = dyn_cast<StructType>(this)) {
643 // Structure indexes require 32-bit integer constants.
644 if (V->getType()->isIntegerTy(32))
645 if (const ConstantInt *CU = dyn_cast<ConstantInt>(V))
646 return CU->getZExtValue() < STy->getNumElements();
650 // Sequential types can be indexed by any integer.
651 return V->getType()->isIntegerTy();
654 bool CompositeType::indexValid(unsigned Idx) const {
655 if (const StructType *STy = dyn_cast<StructType>(this))
656 return Idx < STy->getNumElements();
657 // Sequential types can be indexed by any integer.
662 //===----------------------------------------------------------------------===//
663 // ArrayType Implementation
664 //===----------------------------------------------------------------------===//
666 ArrayType::ArrayType(Type *ElType, uint64_t NumEl)
667 : SequentialType(ArrayTyID, ElType) {
672 ArrayType *ArrayType::get(Type *elementType, uint64_t NumElements) {
673 Type *ElementType = const_cast<Type*>(elementType);
674 assert(isValidElementType(ElementType) && "Invalid type for array element!");
676 LLVMContextImpl *pImpl = ElementType->getContext().pImpl;
678 pImpl->ArrayTypes[std::make_pair(ElementType, NumElements)];
681 Entry = new (pImpl->TypeAllocator) ArrayType(ElementType, NumElements);
685 bool ArrayType::isValidElementType(Type *ElemTy) {
686 return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() &&
687 !ElemTy->isMetadataTy() && !ElemTy->isFunctionTy();
690 //===----------------------------------------------------------------------===//
691 // VectorType Implementation
692 //===----------------------------------------------------------------------===//
694 VectorType::VectorType(Type *ElType, unsigned NumEl)
695 : SequentialType(VectorTyID, ElType) {
699 VectorType *VectorType::get(Type *elementType, unsigned NumElements) {
700 Type *ElementType = const_cast<Type*>(elementType);
701 assert(NumElements > 0 && "#Elements of a VectorType must be greater than 0");
702 assert(isValidElementType(ElementType) &&
703 "Elements of a VectorType must be a primitive type");
705 LLVMContextImpl *pImpl = ElementType->getContext().pImpl;
706 VectorType *&Entry = ElementType->getContext().pImpl
707 ->VectorTypes[std::make_pair(ElementType, NumElements)];
710 Entry = new (pImpl->TypeAllocator) VectorType(ElementType, NumElements);
714 bool VectorType::isValidElementType(Type *ElemTy) {
715 if (PointerType *PTy = dyn_cast<PointerType>(ElemTy))
716 ElemTy = PTy->getElementType();
717 return ElemTy->isIntegerTy() || ElemTy->isFloatingPointTy();
720 //===----------------------------------------------------------------------===//
721 // PointerType Implementation
722 //===----------------------------------------------------------------------===//
724 PointerType *PointerType::get(Type *EltTy, unsigned AddressSpace) {
725 assert(EltTy && "Can't get a pointer to <null> type!");
726 assert(isValidElementType(EltTy) && "Invalid type for pointer element!");
728 LLVMContextImpl *CImpl = EltTy->getContext().pImpl;
730 // Since AddressSpace #0 is the common case, we special case it.
731 PointerType *&Entry = AddressSpace == 0 ? CImpl->PointerTypes[EltTy]
732 : CImpl->ASPointerTypes[std::make_pair(EltTy, AddressSpace)];
735 Entry = new (CImpl->TypeAllocator) PointerType(EltTy, AddressSpace);
740 PointerType::PointerType(Type *E, unsigned AddrSpace)
741 : SequentialType(PointerTyID, E) {
743 const unsigned oldNCT = NumContainedTys;
745 setSubclassData(AddrSpace);
746 // Check for miscompile. PR11652.
747 assert(oldNCT == NumContainedTys && "bitfield written out of bounds?");
750 PointerType *Type::getPointerTo(unsigned addrs) {
751 return PointerType::get(this, addrs);
754 bool PointerType::isValidElementType(Type *ElemTy) {
755 return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() &&
756 !ElemTy->isMetadataTy();