// Broadcast a scalar to a vector, if necessary.
if (VectorType *VTy = dyn_cast<VectorType>(Ty))
- C = ConstantVector::get(std::vector<Constant *>(VTy->getNumElements(), C));
+ C = ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
return ConstantFP::get(Ty->getContext(), FL);
}
- SmallVector<Constant*, 16> Elts;
VectorType *VTy = cast<VectorType>(Ty);
- Elts.resize(VTy->getNumElements(), getAllOnesValue(VTy->getElementType()));
- assert(Elts[0] && "Invalid AllOnes value!");
- return cast<ConstantVector>(ConstantVector::get(Elts));
+ return ConstantVector::getSplat(VTy->getNumElements(),
+ getAllOnesValue(VTy->getElementType()));
}
void Constant::destroyConstantImpl() {
}
assert(VTy->getElementType()->isIntegerTy(1) &&
"True must be vector of i1 or i1.");
- SmallVector<Constant*, 16> Splat(VTy->getNumElements(),
- ConstantInt::getTrue(Ty->getContext()));
- return ConstantVector::get(Splat);
+ return ConstantVector::getSplat(VTy->getNumElements(),
+ ConstantInt::getTrue(Ty->getContext()));
}
Constant *ConstantInt::getFalse(Type *Ty) {
}
assert(VTy->getElementType()->isIntegerTy(1) &&
"False must be vector of i1 or i1.");
- SmallVector<Constant*, 16> Splat(VTy->getNumElements(),
- ConstantInt::getFalse(Ty->getContext()));
- return ConstantVector::get(Splat);
+ return ConstantVector::getSplat(VTy->getNumElements(),
+ ConstantInt::getFalse(Ty->getContext()));
}
// For vectors, broadcast the value.
if (VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(SmallVector<Constant*,
- 16>(VTy->getNumElements(), C));
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
// For vectors, broadcast the value.
if (VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- SmallVector<Constant *, 16>(VTy->getNumElements(), C));
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
// For vectors, broadcast the value.
if (VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- SmallVector<Constant *, 16>(VTy->getNumElements(), C));
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
// For vectors, broadcast the value.
if (VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- SmallVector<Constant *, 16>(VTy->getNumElements(), C));
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
-ConstantFP* ConstantFP::getNegativeZero(Type* Ty) {
+ConstantFP *ConstantFP::getNegativeZero(Type *Ty) {
LLVMContext &Context = Ty->getContext();
- APFloat apf = cast <ConstantFP>(Constant::getNullValue(Ty))->getValueAPF();
+ APFloat apf = cast<ConstantFP>(Constant::getNullValue(Ty))->getValueAPF();
apf.changeSign();
return get(Context, apf);
}
-Constant *ConstantFP::getZeroValueForNegation(Type* Ty) {
- if (VectorType *PTy = dyn_cast<VectorType>(Ty))
- if (PTy->getElementType()->isFloatingPointTy()) {
- SmallVector<Constant*, 16> zeros(PTy->getNumElements(),
- getNegativeZero(PTy->getElementType()));
- return ConstantVector::get(zeros);
- }
-
- if (Ty->isFloatingPointTy())
- return getNegativeZero(Ty);
+Constant *ConstantFP::getZeroValueForNegation(Type *Ty) {
+ Type *ScalarTy = Ty->getScalarType();
+ if (ScalarTy->isFloatingPointTy()) {
+ Constant *C = getNegativeZero(ScalarTy);
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
+ return C;
+ }
return Constant::getNullValue(Ty);
}
return getStructElement(cast<ConstantInt>(C)->getZExtValue());
}
+/// getElementValue - Return a zero of the right value for the specified GEP
+/// index.
+Constant *ConstantAggregateZero::getElementValue(unsigned Idx) {
+ if (isa<SequentialType>(getType()))
+ return getSequentialElement();
+ return getStructElement(Idx);
+}
+
+
//===----------------------------------------------------------------------===//
// UndefValue Implementation
//===----------------------------------------------------------------------===//
return getStructElement(cast<ConstantInt>(C)->getZExtValue());
}
+/// getElementValue - Return an undef of the right value for the specified GEP
+/// index.
+UndefValue *UndefValue::getElementValue(unsigned Idx) {
+ if (isa<SequentialType>(getType()))
+ return getSequentialElement();
+ return getStructElement(Idx);
+}
+
+
//===----------------------------------------------------------------------===//
// ConstantXXX Classes
ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), Str[i]));
// Add a null terminator to the string...
- if (AddNull) {
+ if (AddNull)
ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), 0));
- }
ArrayType *ATy = ArrayType::get(Type::getInt8Ty(Context), ElementVals.size());
return get(ATy, ElementVals);
return pImpl->VectorConstants.getOrCreate(T, V);
}
+Constant *ConstantVector::getSplat(unsigned NumElts, Constant *V) {
+ SmallVector<Constant*, 32> Elts(NumElts, V);
+ return get(Elts);
+}
+
+
// Utility function for determining if a ConstantExpr is a CastOp or not. This
// can't be inline because we don't want to #include Instruction.h into
// Constant.h
"PtrToInt source must be pointer or pointer vector");
assert(DstTy->getScalarType()->isIntegerTy() &&
"PtrToInt destination must be integer or integer vector");
- assert(C->getType()->getNumElements() == DstTy->getNumElements() &&
- "Invalid cast between a different number of vector elements");
+ assert(isa<VectorType>(C->getType()) == isa<VectorType>(DstTy));
+ if (isa<VectorType>(C->getType()))
+ assert(cast<VectorType>(C->getType())->getNumElements() ==
+ cast<VectorType>(DstTy)->getNumElements() &&
+ "Invalid cast between a different number of vector elements");
return getFoldedCast(Instruction::PtrToInt, C, DstTy);
}
"IntToPtr source must be integer or integer vector");
assert(DstTy->getScalarType()->isPointerTy() &&
"IntToPtr destination must be a pointer or pointer vector");
- assert(C->getType()->getNumElements() == DstTy->getNumElements() &&
- "Invalid cast between a different number of vector elements");
+ assert(isa<VectorType>(C->getType()) == isa<VectorType>(DstTy));
+ if (isa<VectorType>(C->getType()))
+ assert(cast<VectorType>(C->getType())->getNumElements() ==
+ cast<VectorType>(DstTy)->getNumElements() &&
+ "Invalid cast between a different number of vector elements");
return getFoldedCast(Instruction::IntToPtr, C, DstTy);
}
return getType()->getElementType();
}
+StringRef ConstantDataSequential::getRawDataValues() const {
+ return StringRef(DataElements, getNumElements()*getElementByteSize());
+}
+
/// isElementTypeCompatible - Return true if a ConstantDataSequential can be
/// formed with a vector or array of the specified element type.
/// ConstantDataArray only works with normal float and int types that are
return false;
}
+/// getNumElements - Return the number of elements in the array or vector.
+unsigned ConstantDataSequential::getNumElements() const {
+ if (ArrayType *AT = dyn_cast<ArrayType>(getType()))
+ return AT->getNumElements();
+ return cast<VectorType>(getType())->getNumElements();
+}
+
+
/// getElementByteSize - Return the size in bytes of the elements in the data.
uint64_t ConstantDataSequential::getElementByteSize() const {
return getElementType()->getPrimitiveSizeInBits()/8;
/// getElementPointer - Return the start of the specified element.
const char *ConstantDataSequential::getElementPointer(unsigned Elt) const {
- assert(Elt < getElementType()->getNumElements() && "Invalid Elt");
+ assert(Elt < getNumElements() && "Invalid Elt");
return DataElements+Elt*getElementByteSize();
}
/// we *want* an underlying "char*" to avoid TBAA type punning violations.
Constant *ConstantDataSequential::getImpl(StringRef Elements, Type *Ty) {
assert(isElementTypeCompatible(cast<SequentialType>(Ty)->getElementType()));
- // If the elements are all zero, return a CAZ, which is more dense.
+ // If the elements are all zero or there are no elements, return a CAZ, which
+ // is more dense and canonical.
if (isAllZeros(Elements))
return ConstantAggregateZero::get(Ty);
}
void ConstantDataSequential::destroyConstant() {
- uint64_t ByteSize = getElementByteSize() * getElementType()->getNumElements();
-
// Remove the constant from the StringMap.
StringMap<ConstantDataSequential*> &CDSConstants =
getType()->getContext().pImpl->CDSConstants;
StringMap<ConstantDataSequential*>::iterator Slot =
- CDSConstants.find(StringRef(DataElements, ByteSize));
+ CDSConstants.find(getRawDataValues());
assert(Slot != CDSConstants.end() && "CDS not found in uniquing table");
/// get() constructors - Return a constant with array type with an element
/// count and element type matching the ArrayRef passed in. Note that this
/// can return a ConstantAggregateZero object.
-Constant *ConstantDataArray::get(ArrayRef<uint8_t> Elts, LLVMContext &Context) {
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint8_t> Elts) {
Type *Ty = ArrayType::get(Type::getInt8Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*1), Ty);
}
-Constant *ConstantDataArray::get(ArrayRef<uint16_t> Elts, LLVMContext &Context){
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint16_t> Elts){
Type *Ty = ArrayType::get(Type::getInt16Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*2), Ty);
}
-Constant *ConstantDataArray::get(ArrayRef<uint32_t> Elts, LLVMContext &Context){
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint32_t> Elts){
Type *Ty = ArrayType::get(Type::getInt32Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty);
}
-Constant *ConstantDataArray::get(ArrayRef<uint64_t> Elts, LLVMContext &Context){
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint64_t> Elts){
Type *Ty = ArrayType::get(Type::getInt64Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty);
}
-Constant *ConstantDataArray::get(ArrayRef<float> Elts, LLVMContext &Context) {
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<float> Elts) {
Type *Ty = ArrayType::get(Type::getFloatTy(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty);
}
-Constant *ConstantDataArray::get(ArrayRef<double> Elts, LLVMContext &Context) {
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<double> Elts) {
Type *Ty = ArrayType::get(Type::getDoubleTy(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty);
}
+/// getString - This method constructs a CDS and initializes it with a text
+/// string. The default behavior (AddNull==true) causes a null terminator to
+/// be placed at the end of the array (increasing the length of the string by
+/// one more than the StringRef would normally indicate. Pass AddNull=false
+/// to disable this behavior.
+Constant *ConstantDataArray::getString(LLVMContext &Context,
+ StringRef Str, bool AddNull) {
+ if (!AddNull)
+ return get(Context, ArrayRef<uint8_t>((uint8_t*)Str.data(), Str.size()));
+
+ SmallVector<uint8_t, 64> ElementVals;
+ ElementVals.append(Str.begin(), Str.end());
+ ElementVals.push_back(0);
+ return get(Context, ElementVals);
+}
/// get() constructors - Return a constant with vector type with an element
/// count and element type matching the ArrayRef passed in. Note that this
/// can return a ConstantAggregateZero object.
-Constant *ConstantDataVector::get(ArrayRef<uint8_t> Elts, LLVMContext &Context) {
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint8_t> Elts){
Type *Ty = VectorType::get(Type::getInt8Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*1), Ty);
}
-Constant *ConstantDataVector::get(ArrayRef<uint16_t> Elts, LLVMContext &Context){
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint16_t> Elts){
Type *Ty = VectorType::get(Type::getInt16Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*2), Ty);
}
-Constant *ConstantDataVector::get(ArrayRef<uint32_t> Elts, LLVMContext &Context){
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint32_t> Elts){
Type *Ty = VectorType::get(Type::getInt32Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty);
}
-Constant *ConstantDataVector::get(ArrayRef<uint64_t> Elts, LLVMContext &Context){
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint64_t> Elts){
Type *Ty = VectorType::get(Type::getInt64Ty(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty);
}
-Constant *ConstantDataVector::get(ArrayRef<float> Elts, LLVMContext &Context) {
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<float> Elts) {
Type *Ty = VectorType::get(Type::getFloatTy(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty);
}
-Constant *ConstantDataVector::get(ArrayRef<double> Elts, LLVMContext &Context) {
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<double> Elts) {
Type *Ty = VectorType::get(Type::getDoubleTy(Context), Elts.size());
return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty);
}
+Constant *ConstantDataVector::getSplat(unsigned NumElts, Constant *V) {
+ assert(isElementTypeCompatible(V->getType()) &&
+ "Element type not compatible with ConstantData");
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
+ if (CI->getType()->isIntegerTy(8)) {
+ SmallVector<uint8_t, 16> Elts(NumElts, CI->getZExtValue());
+ return get(V->getContext(), Elts);
+ }
+ if (CI->getType()->isIntegerTy(16)) {
+ SmallVector<uint16_t, 16> Elts(NumElts, CI->getZExtValue());
+ return get(V->getContext(), Elts);
+ }
+ if (CI->getType()->isIntegerTy(32)) {
+ SmallVector<uint32_t, 16> Elts(NumElts, CI->getZExtValue());
+ return get(V->getContext(), Elts);
+ }
+ assert(CI->getType()->isIntegerTy(64) && "Unsupported ConstantData type");
+ SmallVector<uint64_t, 16> Elts(NumElts, CI->getZExtValue());
+ return get(V->getContext(), Elts);
+ }
+
+ ConstantFP *CFP = cast<ConstantFP>(V);
+ if (CFP->getType()->isFloatTy()) {
+ SmallVector<float, 16> Elts(NumElts, CFP->getValueAPF().convertToFloat());
+ return get(V->getContext(), Elts);
+ }
+ assert(CFP->getType()->isDoubleTy() && "Unsupported ConstantData type");
+ SmallVector<double, 16> Elts(NumElts, CFP->getValueAPF().convertToDouble());
+ return get(V->getContext(), Elts);
+}
+
+
/// getElementAsInteger - If this is a sequential container of integers (of
/// any size), return the specified element in the low bits of a uint64_t.
uint64_t ConstantDataSequential::getElementAsInteger(unsigned Elt) const {
const char *EltPtr = getElementPointer(Elt);
switch (getElementType()->getTypeID()) {
- default: assert("Accessor can only be used when element is float/double!");
+ default:
+ assert(0 && "Accessor can only be used when element is float/double!");
case Type::FloatTyID: return APFloat(*(float*)EltPtr);
case Type::DoubleTyID: return APFloat(*(double*)EltPtr);
}
return ConstantInt::get(getElementType(), getElementAsInteger(Elt));
}
+/// isString - This method returns true if this is an array of i8.
+bool ConstantDataSequential::isString() const {
+ return isa<ArrayType>(getType()) && getElementType()->isIntegerTy(8);
+}
+/// isCString - This method returns true if the array "isString", ends with a
+/// nul byte, and does not contains any other nul bytes.
+bool ConstantDataSequential::isCString() const {
+ if (!isString())
+ return false;
+
+ StringRef Str = getAsString();
+
+ // The last value must be nul.
+ if (Str.back() != 0) return false;
+
+ // Other elements must be non-nul.
+ return Str.drop_back().find(0) == StringRef::npos;
+}
//===----------------------------------------------------------------------===//
projects / oota-llvm.git / blobdiff