return isa<ConstantAggregateZero>(this) || isa<ConstantPointerNull>(this);
}
+bool Constant::isAllOnesValue() const {
+ // Check for -1 integers
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(this))
+ return CI->isMinusOne();
+
+ // Check for FP which are bitcasted from -1 integers
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))
+ return CFP->getValueAPF().bitcastToAPInt().isAllOnesValue();
+
+ // Check for constant vectors
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(this))
+ return CV->isAllOnesValue();
+
+ return false;
+}
// Constructor to create a '0' constant of arbitrary type...
Constant *Constant::getNullValue(Type *Ty) {
switch (Ty->getTypeID()) {
return ConstantAggregateZero::get(Ty);
default:
// Function, Label, or Opaque type?
- assert(!"Cannot create a null constant of that type!");
+ assert(0 && "Cannot create a null constant of that type!");
return 0;
}
}
SmallVector<Constant*, 16> Elts;
VectorType *VTy = cast<VectorType>(Ty);
Elts.resize(VTy->getNumElements(), getAllOnesValue(VTy->getElementType()));
- assert(Elts[0] && "Not a vector integer type!");
+ assert(Elts[0] && "Invalid AllOnes value!");
return cast<ConstantVector>(ConstantVector::get(Elts));
}
//===----------------------------------------------------------------------===//
-ConstantArray::ConstantArray(ArrayType *T,
- const std::vector<Constant*> &V)
+ConstantArray::ConstantArray(ArrayType *T, ArrayRef<Constant *> V)
: Constant(T, ConstantArrayVal,
OperandTraits<ConstantArray>::op_end(this) - V.size(),
V.size()) {
assert(V.size() == T->getNumElements() &&
"Invalid initializer vector for constant array");
- Use *OL = OperandList;
- for (std::vector<Constant*>::const_iterator I = V.begin(), E = V.end();
- I != E; ++I, ++OL) {
- Constant *C = *I;
- assert(C->getType() == T->getElementType() &&
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ assert(V[i]->getType() == T->getElementType() &&
"Initializer for array element doesn't match array element type!");
- *OL = C;
- }
+ std::copy(V.begin(), V.end(), op_begin());
}
Constant *ConstantArray::get(ArrayType *Ty, ArrayRef<Constant*> V) {
}
-ConstantStruct::ConstantStruct(StructType *T,
- const std::vector<Constant*> &V)
+ConstantStruct::ConstantStruct(StructType *T, ArrayRef<Constant *> V)
: Constant(T, ConstantStructVal,
OperandTraits<ConstantStruct>::op_end(this) - V.size(),
V.size()) {
- assert((T->isOpaque() || V.size() == T->getNumElements()) &&
+ assert(V.size() == T->getNumElements() &&
"Invalid initializer vector for constant structure");
- Use *OL = OperandList;
- for (std::vector<Constant*>::const_iterator I = V.begin(), E = V.end();
- I != E; ++I, ++OL) {
- Constant *C = *I;
- assert((T->isOpaque() || C->getType() == T->getElementType(I-V.begin())) &&
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ assert((T->isOpaque() || V[i]->getType() == T->getElementType(i)) &&
"Initializer for struct element doesn't match struct element type!");
- *OL = C;
- }
+ std::copy(V.begin(), V.end(), op_begin());
}
// ConstantStruct accessors.
return ConstantAggregateZero::get(ST);
}
-Constant* ConstantStruct::get(StructType *T, ...) {
+Constant *ConstantStruct::get(StructType *T, ...) {
va_list ap;
SmallVector<Constant*, 8> Values;
va_start(ap, T);
return get(T, Values);
}
-ConstantVector::ConstantVector(VectorType *T,
- const std::vector<Constant*> &V)
+ConstantVector::ConstantVector(VectorType *T, ArrayRef<Constant *> V)
: Constant(T, ConstantVectorVal,
OperandTraits<ConstantVector>::op_end(this) - V.size(),
V.size()) {
- Use *OL = OperandList;
- for (std::vector<Constant*>::const_iterator I = V.begin(), E = V.end();
- I != E; ++I, ++OL) {
- Constant *C = *I;
- assert(C->getType() == T->getElementType() &&
+ for (size_t i = 0, e = V.size(); i != e; i++)
+ assert(V[i]->getType() == T->getElementType() &&
"Initializer for vector element doesn't match vector element type!");
- *OL = C;
- }
+ std::copy(V.begin(), V.end(), op_begin());
}
// ConstantVector accessors.
for (unsigned i = 1, e = getNumOperands(); i != e; ++i)
Ops[i-1] = getOperand(i);
if (OpNo == 0)
- return cast<GEPOperator>(this)->isInBounds() ?
- ConstantExpr::getInBoundsGetElementPtr(Op, &Ops[0], Ops.size()) :
- ConstantExpr::getGetElementPtr(Op, &Ops[0], Ops.size());
+ return
+ ConstantExpr::getGetElementPtr(Op, Ops,
+ cast<GEPOperator>(this)->isInBounds());
Ops[OpNo-1] = Op;
- return cast<GEPOperator>(this)->isInBounds() ?
- ConstantExpr::getInBoundsGetElementPtr(getOperand(0), &Ops[0],Ops.size()):
- ConstantExpr::getGetElementPtr(getOperand(0), &Ops[0], Ops.size());
+ return
+ ConstantExpr::getGetElementPtr(getOperand(0), Ops,
+ cast<GEPOperator>(this)->isInBounds());
}
default:
assert(getNumOperands() == 2 && "Must be binary operator?");
case Instruction::ShuffleVector:
return ConstantExpr::getShuffleVector(Ops[0], Ops[1], Ops[2]);
case Instruction::GetElementPtr:
- return cast<GEPOperator>(this)->isInBounds() ?
- ConstantExpr::getInBoundsGetElementPtr(Ops[0], &Ops[1], Ops.size()-1) :
- ConstantExpr::getGetElementPtr(Ops[0], &Ops[1], Ops.size()-1);
+ return
+ ConstantExpr::getGetElementPtr(Ops[0], Ops.slice(1),
+ cast<GEPOperator>(this)->isInBounds());
case Instruction::ICmp:
case Instruction::FCmp:
return ConstantExpr::getCompare(getPredicate(), Ops[0], Ops[1]);
// Check out first element.
const Constant *Elt = getOperand(0);
const ConstantInt *CI = dyn_cast<ConstantInt>(Elt);
- if (!CI || !CI->isAllOnesValue()) return false;
+ const ConstantFP *CF = dyn_cast<ConstantFP>(Elt);
+
// Then make sure all remaining elements point to the same value.
for (unsigned I = 1, E = getNumOperands(); I < E; ++I)
if (getOperand(I) != Elt)
return false;
- return true;
+ // First value is all-ones.
+ return (CI && CI->isAllOnesValue()) ||
+ (CF && CF->isAllOnesValue());
}
/// getSplatValue - If this is a splat constant, where all of the
// Note that a non-inbounds gep is used, as null isn't within any object.
Constant *GEPIdx = ConstantInt::get(Type::getInt32Ty(Ty->getContext()), 1);
Constant *GEP = getGetElementPtr(
- Constant::getNullValue(PointerType::getUnqual(Ty)), &GEPIdx, 1);
+ Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx);
return getPtrToInt(GEP,
Type::getInt64Ty(Ty->getContext()));
}
Constant *Zero = ConstantInt::get(Type::getInt64Ty(Ty->getContext()), 0);
Constant *One = ConstantInt::get(Type::getInt32Ty(Ty->getContext()), 1);
Constant *Indices[2] = { Zero, One };
- Constant *GEP = getGetElementPtr(NullPtr, Indices, 2);
+ Constant *GEP = getGetElementPtr(NullPtr, Indices);
return getPtrToInt(GEP,
Type::getInt64Ty(Ty->getContext()));
}
FieldNo
};
Constant *GEP = getGetElementPtr(
- Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx, 2);
+ Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx);
return getPtrToInt(GEP,
Type::getInt64Ty(Ty->getContext()));
}
return pImpl->ExprConstants.getOrCreate(V1->getType(), Key);
}
-Constant *ConstantExpr::getGetElementPtr(Constant *C, Value* const *Idxs,
- unsigned NumIdx, bool InBounds) {
- if (Constant *FC = ConstantFoldGetElementPtr(C, InBounds,
- makeArrayRef(Idxs, NumIdx)))
+Constant *ConstantExpr::getGetElementPtr(Constant *C, ArrayRef<Value *> Idxs,
+ bool InBounds) {
+ if (Constant *FC = ConstantFoldGetElementPtr(C, InBounds, Idxs))
return FC; // Fold a few common cases.
// Get the result type of the getelementptr!
- Type *Ty =
- GetElementPtrInst::getIndexedType(C->getType(), Idxs, Idxs+NumIdx);
+ Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), Idxs);
assert(Ty && "GEP indices invalid!");
unsigned AS = cast<PointerType>(C->getType())->getAddressSpace();
Type *ReqTy = Ty->getPointerTo(AS);
"Non-pointer type for constant GetElementPtr expression");
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec;
- ArgVec.reserve(NumIdx+1);
+ ArgVec.reserve(1 + Idxs.size());
ArgVec.push_back(C);
- for (unsigned i = 0; i != NumIdx; ++i)
+ for (unsigned i = 0, e = Idxs.size(); i != e; ++i)
ArgVec.push_back(cast<Constant>(Idxs[i]));
const ExprMapKeyType Key(Instruction::GetElementPtr, ArgVec, 0,
InBounds ? GEPOperator::IsInBounds : 0);
if (Val == From) Val = To;
Indices.push_back(Val);
}
- Replacement = ConstantExpr::getGetElementPtr(Pointer,
- &Indices[0], Indices.size(),
+ Replacement = ConstantExpr::getGetElementPtr(Pointer, Indices,
cast<GEPOperator>(this)->isInBounds());
} else if (getOpcode() == Instruction::ExtractValue) {
Constant *Agg = getOperand(0);
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