#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/STLExtras.h"
#include <algorithm>
-#include <map>
+#include <cstdarg>
using namespace llvm;
//===----------------------------------------------------------------------===//
// Constant Class
//===----------------------------------------------------------------------===//
+void Constant::anchor() { }
+
+bool Constant::isNegativeZeroValue() const {
+ // Floating point values have an explicit -0.0 value.
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))
+ return CFP->isZero() && CFP->isNegative();
+
+ // Otherwise, just use +0.0.
+ return isNullValue();
+}
+
+bool Constant::isNullValue() const {
+ // 0 is null.
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(this))
+ return CI->isZero();
+
+ // +0.0 is null.
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))
+ return CFP->isZero() && !CFP->isNegative();
+
+ // constant zero is zero for aggregates and cpnull is null for pointers.
+ 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 which are splats of -1 values.
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isAllOnesValue();
+
+ // Check for constant vectors which are splats of -1 values.
+ if (const ConstantDataVector *CV = dyn_cast<ConstantDataVector>(this))
+ if (Constant *Splat = CV->getSplatValue())
+ return Splat->isAllOnesValue();
+
+ return false;
+}
+
// Constructor to create a '0' constant of arbitrary type...
-Constant *Constant::getNullValue(const Type *Ty) {
+Constant *Constant::getNullValue(Type *Ty) {
switch (Ty->getTypeID()) {
case Type::IntegerTyID:
return ConstantInt::get(Ty, 0);
+ case Type::HalfTyID:
+ return ConstantFP::get(Ty->getContext(),
+ APFloat::getZero(APFloat::IEEEhalf));
case Type::FloatTyID:
return ConstantFP::get(Ty->getContext(),
APFloat::getZero(APFloat::IEEEsingle));
return ConstantAggregateZero::get(Ty);
default:
// Function, Label, or Opaque type?
- assert(!"Cannot create a null constant of that type!");
- return 0;
+ llvm_unreachable("Cannot create a null constant of that type!");
}
}
-Constant* Constant::getIntegerValue(const Type *Ty, const APInt &V) {
- const Type *ScalarTy = Ty->getScalarType();
+Constant *Constant::getIntegerValue(Type *Ty, const APInt &V) {
+ Type *ScalarTy = Ty->getScalarType();
// Create the base integer constant.
Constant *C = ConstantInt::get(Ty->getContext(), V);
// Convert an integer to a pointer, if necessary.
- if (
const PointerType *PTy = dyn_cast<PointerType>(ScalarTy))
+ if (PointerType *PTy = dyn_cast<PointerType>(ScalarTy))
C = ConstantExpr::getIntToPtr(C, PTy);
// Broadcast a scalar to a vector, if necessary.
- if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
- C = ConstantVector::get(std::vector<Constant *>(VTy->getNumElements(), C));
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ C = ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
-Constant* Constant::getAllOnesValue(const Type *Ty) {
- if (const IntegerType *ITy = dyn_cast<IntegerType>(Ty))
+Constant *Constant::getAllOnesValue(Type *Ty) {
+ if (IntegerType *ITy = dyn_cast<IntegerType>(Ty))
return ConstantInt::get(Ty->getContext(),
APInt::getAllOnesValue(ITy->getBitWidth()));
-
- std::vector<Constant*> Elts;
- const VectorType *VTy = cast<VectorType>(Ty);
- Elts.resize(VTy->getNumElements(), getAllOnesValue(VTy->getElementType()));
- assert(Elts[0] && "Not a vector integer type!");
- return cast<ConstantVector>(ConstantVector::get(Elts));
+
+ if (Ty->isFloatingPointTy()) {
+ APFloat FL = APFloat::getAllOnesValue(Ty->getPrimitiveSizeInBits(),
+ !Ty->isPPC_FP128Ty());
+ return ConstantFP::get(Ty->getContext(), FL);
+ }
+
+ VectorType *VTy = cast<VectorType>(Ty);
+ return ConstantVector::getSplat(VTy->getNumElements(),
+ getAllOnesValue(VTy->getElementType()));
+}
+
+/// getAggregateElement - For aggregates (struct/array/vector) return the
+/// constant that corresponds to the specified element if possible, or null if
+/// not. This can return null if the element index is a ConstantExpr, or if
+/// 'this' is a constant expr.
+Constant *Constant::getAggregateElement(unsigned Elt) const {
+ if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(this))
+ return Elt < CS->getNumOperands() ? CS->getOperand(Elt) : 0;
+
+ if (const ConstantArray *CA = dyn_cast<ConstantArray>(this))
+ return Elt < CA->getNumOperands() ? CA->getOperand(Elt) : 0;
+
+ if (const ConstantVector *CV = dyn_cast<ConstantVector>(this))
+ return Elt < CV->getNumOperands() ? CV->getOperand(Elt) : 0;
+
+ if (const ConstantAggregateZero *CAZ =dyn_cast<ConstantAggregateZero>(this))
+ return CAZ->getElementValue(Elt);
+
+ if (const UndefValue *UV = dyn_cast<UndefValue>(this))
+ return UV->getElementValue(Elt);
+
+ if (const ConstantDataSequential *CDS =dyn_cast<ConstantDataSequential>(this))
+ return Elt < CDS->getNumElements() ? CDS->getElementAsConstant(Elt) : 0;
+ return 0;
+}
+
+Constant *Constant::getAggregateElement(Constant *Elt) const {
+ assert(isa<IntegerType>(Elt->getType()) && "Index must be an integer");
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(Elt))
+ return getAggregateElement(CI->getZExtValue());
+ return 0;
}
+
void Constant::destroyConstantImpl() {
// When a Constant is destroyed, there may be lingering
// references to the constant by other constants in the constant pool. These
}
#endif
assert(isa<Constant>(V) && "References remain to Constant being destroyed");
- Constant *CV = cast<Constant>(V);
- CV->destroyConstant();
+ cast<Constant>(V)->destroyConstant();
// The constant should remove itself from our use list...
assert((use_empty() || use_back() != V) && "Constant not removed!");
// The only thing that could possibly trap are constant exprs.
const ConstantExpr *CE = dyn_cast<ConstantExpr>(this);
if (!CE) return false;
-
- // ConstantExpr traps if any operands can trap.
+
+ // ConstantExpr traps if any operands can trap.
for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
- if (CE->getOperand(i)->canTrap())
+ if (CE->getOperand(i)->canTrap())
return true;
// Otherwise, only specific operations can trap.
const Constant *UC = dyn_cast<Constant>(*UI);
if (UC == 0 || isa<GlobalValue>(UC))
return true;
-
+
if (UC->isConstantUsed())
return true;
}
cast<BlockAddress>(RHS->getOperand(0))->getFunction())
return NoRelocation;
}
-
+
PossibleRelocationsTy Result = NoRelocation;
for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
Result = std::max(Result,
cast<Constant>(getOperand(i))->getRelocationInfo());
-
+
return Result;
}
+/// removeDeadUsersOfConstant - If the specified constantexpr is dead, remove
+/// it. This involves recursively eliminating any dead users of the
+/// constantexpr.
+static bool removeDeadUsersOfConstant(const Constant *C) {
+ if (isa<GlobalValue>(C)) return false; // Cannot remove this
-/// getVectorElements - This method, which is only valid on constant of vector
-/// type, returns the elements of the vector in the specified smallvector.
-/// This handles breaking down a vector undef into undef elements, etc. For
-/// constant exprs and other cases we can't handle, we return an empty vector.
-void Constant::getVectorElements(SmallVectorImpl<Constant*> &Elts) const {
- assert(getType()->isVectorTy() && "Not a vector constant!");
-
- if (const ConstantVector *CV = dyn_cast<ConstantVector>(this)) {
- for (unsigned i = 0, e = CV->getNumOperands(); i != e; ++i)
- Elts.push_back(CV->getOperand(i));
- return;
- }
-
- const VectorType *VT = cast<VectorType>(getType());
- if (isa<ConstantAggregateZero>(this)) {
- Elts.assign(VT->getNumElements(),
- Constant::getNullValue(VT->getElementType()));
- return;
+ while (!C->use_empty()) {
+ const Constant *User = dyn_cast<Constant>(C->use_back());
+ if (!User) return false; // Non-constant usage;
+ if (!removeDeadUsersOfConstant(User))
+ return false; // Constant wasn't dead
}
-
- if (isa<UndefValue>(this)) {
- Elts.assign(VT->getNumElements(), UndefValue::get(VT->getElementType()));
- return;
+
+ const_cast<Constant*>(C)->destroyConstant();
+ return true;
+}
+
+
+/// removeDeadConstantUsers - If there are any dead constant users dangling
+/// off of this constant, remove them. This method is useful for clients
+/// that want to check to see if a global is unused, but don't want to deal
+/// with potentially dead constants hanging off of the globals.
+void Constant::removeDeadConstantUsers() const {
+ Value::const_use_iterator I = use_begin(), E = use_end();
+ Value::const_use_iterator LastNonDeadUser = E;
+ while (I != E) {
+ const Constant *User = dyn_cast<Constant>(*I);
+ if (User == 0) {
+ LastNonDeadUser = I;
+ ++I;
+ continue;
+ }
+
+ if (!removeDeadUsersOfConstant(User)) {
+ // If the constant wasn't dead, remember that this was the last live use
+ // and move on to the next constant.
+ LastNonDeadUser = I;
+ ++I;
+ continue;
+ }
+
+ // If the constant was dead, then the iterator is invalidated.
+ if (LastNonDeadUser == E) {
+ I = use_begin();
+ if (I == E) break;
+ } else {
+ I = LastNonDeadUser;
+ ++I;
+ }
}
-
- // Unknown type, must be constant expr etc.
}
// ConstantInt
//===----------------------------------------------------------------------===//
-ConstantInt::ConstantInt(const IntegerType *Ty, const APInt& V)
+void ConstantInt::anchor() { }
+
+ConstantInt::ConstantInt(IntegerType *Ty, const APInt& V)
: Constant(Ty, ConstantIntVal, 0, 0), Val(V) {
assert(V.getBitWidth() == Ty->getBitWidth() && "Invalid constant for type");
}
-ConstantInt* ConstantInt::getTrue(LLVMContext &Context) {
+ConstantInt *ConstantInt::getTrue(LLVMContext &Context) {
LLVMContextImpl *pImpl = Context.pImpl;
if (!pImpl->TheTrueVal)
pImpl->TheTrueVal = ConstantInt::get(Type::getInt1Ty(Context), 1);
return pImpl->TheTrueVal;
}
-ConstantInt* ConstantInt::getFalse(LLVMContext &Context) {
+ConstantInt *ConstantInt::getFalse(LLVMContext &Context) {
LLVMContextImpl *pImpl = Context.pImpl;
if (!pImpl->TheFalseVal)
pImpl->TheFalseVal = ConstantInt::get(Type::getInt1Ty(Context), 0);
return pImpl->TheFalseVal;
}
+Constant *ConstantInt::getTrue(Type *Ty) {
+ VectorType *VTy = dyn_cast<VectorType>(Ty);
+ if (!VTy) {
+ assert(Ty->isIntegerTy(1) && "True must be i1 or vector of i1.");
+ return ConstantInt::getTrue(Ty->getContext());
+ }
+ assert(VTy->getElementType()->isIntegerTy(1) &&
+ "True must be vector of i1 or i1.");
+ return ConstantVector::getSplat(VTy->getNumElements(),
+ ConstantInt::getTrue(Ty->getContext()));
+}
+
+Constant *ConstantInt::getFalse(Type *Ty) {
+ VectorType *VTy = dyn_cast<VectorType>(Ty);
+ if (!VTy) {
+ assert(Ty->isIntegerTy(1) && "False must be i1 or vector of i1.");
+ return ConstantInt::getFalse(Ty->getContext());
+ }
+ assert(VTy->getElementType()->isIntegerTy(1) &&
+ "False must be vector of i1 or i1.");
+ return ConstantVector::getSplat(VTy->getNumElements(),
+ ConstantInt::getFalse(Ty->getContext()));
+}
+
// Get a ConstantInt from an APInt. Note that the value stored in the DenseMap
// as the key, is a DenseMapAPIntKeyInfo::KeyTy which has provided the
// operator== and operator!= to ensure that the DenseMap doesn't attempt to
// compare APInt's of different widths, which would violate an APInt class
// invariant which generates an assertion.
-ConstantInt *ConstantInt::get(LLVMContext &Context, const APInt& V) {
+ConstantInt *ConstantInt::get(LLVMContext &Context, const APInt &V) {
// Get the corresponding integer type for the bit width of the value.
- const IntegerType *ITy = IntegerType::get(Context, V.getBitWidth());
+ IntegerType *ITy = IntegerType::get(Context, V.getBitWidth());
// get an existing value or the insertion position
DenseMapAPIntKeyInfo::KeyTy Key(V, ITy);
ConstantInt *&Slot = Context.pImpl->IntConstants[Key];
return Slot;
}
-Constant* ConstantInt::get(const Type* Ty, uint64_t V, bool isSigned) {
- Constant *C = get(cast<IntegerType>(Ty->getScalarType()),
- V, isSigned);
+Constant *ConstantInt::get(Type *Ty, uint64_t V, bool isSigned) {
+ Constant *C = get(cast<IntegerType>(Ty->getScalarType()), V, isSigned);
// For vectors, broadcast the value.
- if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- std::vector<Constant *>(VTy->getNumElements(), C));
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
-ConstantInt* ConstantInt::get(const IntegerType* Ty, uint64_t V,
+ConstantInt *ConstantInt::get(IntegerType *Ty, uint64_t V,
bool isSigned) {
return get(Ty->getContext(), APInt(Ty->getBitWidth(), V, isSigned));
}
-ConstantInt* ConstantInt::getSigned(const IntegerType* Ty, int64_t V) {
+ConstantInt *ConstantInt::getSigned(IntegerType *Ty, int64_t V) {
return get(Ty, V, true);
}
-Constant *ConstantInt::getSigned(const Type *Ty, int64_t V) {
+Constant *ConstantInt::getSigned(Type *Ty, int64_t V) {
return get(Ty, V, true);
}
-Constant* ConstantInt::get(const Type* Ty, const APInt& V) {
+Constant *ConstantInt::get(Type *Ty, const APInt& V) {
ConstantInt *C = get(Ty->getContext(), V);
assert(C->getType() == Ty->getScalarType() &&
"ConstantInt type doesn't match the type implied by its value!");
// For vectors, broadcast the value.
- if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- std::vector<Constant *>(VTy->getNumElements(), C));
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
-ConstantInt* ConstantInt::get(const IntegerType* Ty, StringRef Str,
+ConstantInt *ConstantInt::get(IntegerType* Ty, StringRef Str,
uint8_t radix) {
return get(Ty->getContext(), APInt(Ty->getBitWidth(), Str, radix));
}
// ConstantFP
//===----------------------------------------------------------------------===//
-static const fltSemantics *TypeToFloatSemantics(const Type *Ty) {
+static const fltSemantics *TypeToFloatSemantics(Type *Ty) {
+ if (Ty->isHalfTy())
+ return &APFloat::IEEEhalf;
if (Ty->isFloatTy())
return &APFloat::IEEEsingle;
if (Ty->isDoubleTy())
return &APFloat::x87DoubleExtended;
else if (Ty->isFP128Ty())
return &APFloat::IEEEquad;
-
+
assert(Ty->isPPC_FP128Ty() && "Unknown FP format");
return &APFloat::PPCDoubleDouble;
}
+void ConstantFP::anchor() { }
+
/// get() - This returns a constant fp for the specified value in the
/// specified type. This should only be used for simple constant values like
/// 2.0/1.0 etc, that are known-valid both as double and as the target format.
-Constant* ConstantFP::get(const Type* Ty, double V) {
+Constant *ConstantFP::get(Type *Ty, double V) {
LLVMContext &Context = Ty->getContext();
-
+
APFloat FV(V);
bool ignored;
FV.convert(*TypeToFloatSemantics(Ty->getScalarType()),
Constant *C = get(Context, FV);
// For vectors, broadcast the value.
- if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- std::vector<Constant *>(VTy->getNumElements(), C));
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
-Constant* ConstantFP::get(const Type* Ty, StringRef Str) {
+Constant *ConstantFP::get(Type *Ty, StringRef Str) {
LLVMContext &Context = Ty->getContext();
APFloat FV(*TypeToFloatSemantics(Ty->getScalarType()), Str);
Constant *C = get(Context, FV);
// For vectors, broadcast the value.
- if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
- return ConstantVector::get(
- std::vector<Constant *>(VTy->getNumElements(), C));
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return ConstantVector::getSplat(VTy->getNumElements(), C);
return C;
}
-ConstantFP* ConstantFP::getNegativeZero(const 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(const Type* Ty) {
- if (const VectorType *PTy = dyn_cast<VectorType>(Ty))
- if (PTy->getElementType()->isFloatingPointTy()) {
- std::vector<Constant*> zeros(PTy->getNumElements(),
- getNegativeZero(PTy->getElementType()));
- return ConstantVector::get(PTy, 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);
}
// ConstantFP accessors.
ConstantFP* ConstantFP::get(LLVMContext &Context, const APFloat& V) {
DenseMapAPFloatKeyInfo::KeyTy Key(V);
-
+
LLVMContextImpl* pImpl = Context.pImpl;
-
+
ConstantFP *&Slot = pImpl->FPConstants[Key];
-
+
if (!Slot) {
- const Type *Ty;
- if (&V.getSemantics() == &APFloat::IEEEsingle)
+ Type *Ty;
+ if (&V.getSemantics() == &APFloat::IEEEhalf)
+ Ty = Type::getHalfTy(Context);
+ else if (&V.getSemantics() == &APFloat::IEEEsingle)
Ty = Type::getFloatTy(Context);
else if (&V.getSemantics() == &APFloat::IEEEdouble)
Ty = Type::getDoubleTy(Context);
}
Slot = new ConstantFP(Ty, V);
}
-
+
return Slot;
}
-ConstantFP *ConstantFP::getInfinity(const Type *Ty, bool Negative) {
+ConstantFP *ConstantFP::getInfinity(Type *Ty, bool Negative) {
const fltSemantics &Semantics = *TypeToFloatSemantics(Ty);
return ConstantFP::get(Ty->getContext(),
APFloat::getInf(Semantics, Negative));
}
-ConstantFP::ConstantFP(const Type *Ty, const APFloat& V)
+ConstantFP::ConstantFP(Type *Ty, const APFloat& V)
: Constant(Ty, ConstantFPVal, 0, 0), Val(V) {
assert(&V.getSemantics() == TypeToFloatSemantics(Ty) &&
"FP type Mismatch");
}
-bool ConstantFP::isNullValue() const {
- return Val.isZero() && !Val.isNegative();
+bool ConstantFP::isExactlyValue(const APFloat &V) const {
+ return Val.bitwiseIsEqual(V);
}
-bool ConstantFP::isExactlyValue(const APFloat& V) const {
- return Val.bitwiseIsEqual(V);
+//===----------------------------------------------------------------------===//
+// ConstantAggregateZero Implementation
+//===----------------------------------------------------------------------===//
+
+/// getSequentialElement - If this CAZ has array or vector type, return a zero
+/// with the right element type.
+Constant *ConstantAggregateZero::getSequentialElement() const {
+ return Constant::getNullValue(getType()->getSequentialElementType());
+}
+
+/// getStructElement - If this CAZ has struct type, return a zero with the
+/// right element type for the specified element.
+Constant *ConstantAggregateZero::getStructElement(unsigned Elt) const {
+ return Constant::getNullValue(getType()->getStructElementType(Elt));
+}
+
+/// getElementValue - Return a zero of the right value for the specified GEP
+/// index if we can, otherwise return null (e.g. if C is a ConstantExpr).
+Constant *ConstantAggregateZero::getElementValue(Constant *C) const {
+ if (isa<SequentialType>(getType()))
+ return getSequentialElement();
+ return getStructElement(cast<ConstantInt>(C)->getZExtValue());
+}
+
+/// getElementValue - Return a zero of the right value for the specified GEP
+/// index.
+Constant *ConstantAggregateZero::getElementValue(unsigned Idx) const {
+ if (isa<SequentialType>(getType()))
+ return getSequentialElement();
+ return getStructElement(Idx);
+}
+
+
+//===----------------------------------------------------------------------===//
+// UndefValue Implementation
+//===----------------------------------------------------------------------===//
+
+/// getSequentialElement - If this undef has array or vector type, return an
+/// undef with the right element type.
+UndefValue *UndefValue::getSequentialElement() const {
+ return UndefValue::get(getType()->getSequentialElementType());
+}
+
+/// getStructElement - If this undef has struct type, return a zero with the
+/// right element type for the specified element.
+UndefValue *UndefValue::getStructElement(unsigned Elt) const {
+ return UndefValue::get(getType()->getStructElementType(Elt));
+}
+
+/// getElementValue - Return an undef of the right value for the specified GEP
+/// index if we can, otherwise return null (e.g. if C is a ConstantExpr).
+UndefValue *UndefValue::getElementValue(Constant *C) const {
+ if (isa<SequentialType>(getType()))
+ return getSequentialElement();
+ return getStructElement(cast<ConstantInt>(C)->getZExtValue());
+}
+
+/// getElementValue - Return an undef of the right value for the specified GEP
+/// index.
+UndefValue *UndefValue::getElementValue(unsigned Idx) const {
+ if (isa<SequentialType>(getType()))
+ return getSequentialElement();
+ return getStructElement(Idx);
}
+
+
//===----------------------------------------------------------------------===//
// ConstantXXX Classes
//===----------------------------------------------------------------------===//
+template <typename ItTy, typename EltTy>
+static bool rangeOnlyContains(ItTy Start, ItTy End, EltTy Elt) {
+ for (; Start != End; ++Start)
+ if (*Start != Elt)
+ return false;
+ return true;
+}
-ConstantArray::ConstantArray(const 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(const ArrayType *Ty,
- const std::vector<Constant*> &V) {
+Constant *ConstantArray::get(ArrayType *Ty, ArrayRef<Constant*> V) {
+ // Empty arrays are canonicalized to ConstantAggregateZero.
+ if (V.empty())
+ return ConstantAggregateZero::get(Ty);
+
for (unsigned i = 0, e = V.size(); i != e; ++i) {
assert(V[i]->getType() == Ty->getElementType() &&
"Wrong type in array element initializer");
}
LLVMContextImpl *pImpl = Ty->getContext().pImpl;
- // If this is an all-zero array, return a ConstantAggregateZero object
- if (!V.empty()) {
- Constant *C = V[0];
- if (!C->isNullValue())
- return pImpl->ArrayConstants.getOrCreate(Ty, V);
-
- for (unsigned i = 1, e = V.size(); i != e; ++i)
- if (V[i] != C)
- return pImpl->ArrayConstants.getOrCreate(Ty, V);
+
+ // If this is an all-zero array, return a ConstantAggregateZero object. If
+ // all undef, return an UndefValue, if "all simple", then return a
+ // ConstantDataArray.
+ Constant *C = V[0];
+ if (isa<UndefValue>(C) && rangeOnlyContains(V.begin(), V.end(), C))
+ return UndefValue::get(Ty);
+
+ if (C->isNullValue() && rangeOnlyContains(V.begin(), V.end(), C))
+ return ConstantAggregateZero::get(Ty);
+
+ // Check to see if all of the elements are ConstantFP or ConstantInt and if
+ // the element type is compatible with ConstantDataVector. If so, use it.
+ if (ConstantDataSequential::isElementTypeCompatible(C->getType())) {
+ // We speculatively build the elements here even if it turns out that there
+ // is a constantexpr or something else weird in the array, since it is so
+ // uncommon for that to happen.
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(C)) {
+ if (CI->getType()->isIntegerTy(8)) {
+ SmallVector<uint8_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataArray::get(C->getContext(), Elts);
+ } else if (CI->getType()->isIntegerTy(16)) {
+ SmallVector<uint16_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataArray::get(C->getContext(), Elts);
+ } else if (CI->getType()->isIntegerTy(32)) {
+ SmallVector<uint32_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataArray::get(C->getContext(), Elts);
+ } else if (CI->getType()->isIntegerTy(64)) {
+ SmallVector<uint64_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataArray::get(C->getContext(), Elts);
+ }
+ }
+
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(C)) {
+ if (CFP->getType()->isFloatTy()) {
+ SmallVector<float, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(V[i]))
+ Elts.push_back(CFP->getValueAPF().convertToFloat());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataArray::get(C->getContext(), Elts);
+ } else if (CFP->getType()->isDoubleTy()) {
+ SmallVector<double, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(V[i]))
+ Elts.push_back(CFP->getValueAPF().convertToDouble());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataArray::get(C->getContext(), Elts);
+ }
+ }
}
-
- return ConstantAggregateZero::get(Ty);
+
+ // Otherwise, we really do want to create a ConstantArray.
+ return pImpl->ArrayConstants.getOrCreate(Ty, V);
}
+/// getTypeForElements - Return an anonymous struct type to use for a constant
+/// with the specified set of elements. The list must not be empty.
+StructType *ConstantStruct::getTypeForElements(LLVMContext &Context,
+ ArrayRef<Constant*> V,
+ bool Packed) {
+ unsigned VecSize = V.size();
+ SmallVector<Type*, 16> EltTypes(VecSize);
+ for (unsigned i = 0; i != VecSize; ++i)
+ EltTypes[i] = V[i]->getType();
-Constant* ConstantArray::get(const ArrayType* T, Constant* const* Vals,
- unsigned NumVals) {
- // FIXME: make this the primary ctor method.
- return get(T, std::vector<Constant*>(Vals, Vals+NumVals));
+ return StructType::get(Context, EltTypes, Packed);
}
-/// ConstantArray::get(const string&) - Return an array that is initialized to
-/// contain the specified string. If length is zero then a null terminator is
-/// added to the specified string so that it may be used in a natural way.
-/// Otherwise, the length parameter specifies how much of the string to use
-/// and it won't be null terminated.
-///
-Constant* ConstantArray::get(LLVMContext &Context, StringRef Str,
- bool AddNull) {
- std::vector<Constant*> ElementVals;
- ElementVals.reserve(Str.size() + size_t(AddNull));
- for (unsigned i = 0; i < Str.size(); ++i)
- ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), Str[i]));
-
- // Add a null terminator to the string...
- if (AddNull) {
- ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), 0));
- }
- ArrayType *ATy = ArrayType::get(Type::getInt8Ty(Context), ElementVals.size());
- return get(ATy, ElementVals);
+StructType *ConstantStruct::getTypeForElements(ArrayRef<Constant*> V,
+ bool Packed) {
+ assert(!V.empty() &&
+ "ConstantStruct::getTypeForElements cannot be called on empty list");
+ return getTypeForElements(V[0]->getContext(), V, Packed);
}
-
-ConstantStruct::ConstantStruct(const 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(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(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.
-Constant* ConstantStruct::get(const StructType* T,
- const std::vector<Constant*>& V) {
- LLVMContextImpl* pImpl = T->getContext().pImpl;
-
- // Create a ConstantAggregateZero value if all elements are zeros...
- for (unsigned i = 0, e = V.size(); i != e; ++i)
- if (!V[i]->isNullValue())
- return pImpl->StructConstants.getOrCreate(T, V);
+Constant *ConstantStruct::get(StructType *ST, ArrayRef<Constant*> V) {
+ assert((ST->isOpaque() || ST->getNumElements() == V.size()) &&
+ "Incorrect # elements specified to ConstantStruct::get");
- return ConstantAggregateZero::get(T);
-}
+ // Create a ConstantAggregateZero value if all elements are zeros.
+ bool isZero = true;
+ bool isUndef = false;
+
+ if (!V.empty()) {
+ isUndef = isa<UndefValue>(V[0]);
+ isZero = V[0]->isNullValue();
+ if (isUndef || isZero) {
+ for (unsigned i = 0, e = V.size(); i != e; ++i) {
+ if (!V[i]->isNullValue())
+ isZero = false;
+ if (!isa<UndefValue>(V[i]))
+ isUndef = false;
+ }
+ }
+ }
+ if (isZero)
+ return ConstantAggregateZero::get(ST);
+ if (isUndef)
+ return UndefValue::get(ST);
-Constant* ConstantStruct::get(LLVMContext &Context,
- const std::vector<Constant*>& V, bool packed) {
- std::vector<const Type*> StructEls;
- StructEls.reserve(V.size());
- for (unsigned i = 0, e = V.size(); i != e; ++i)
- StructEls.push_back(V[i]->getType());
- return get(StructType::get(Context, StructEls, packed), V);
+ return ST->getContext().pImpl->StructConstants.getOrCreate(ST, V);
}
-Constant* ConstantStruct::get(LLVMContext &Context,
- Constant* const *Vals, unsigned NumVals,
- bool Packed) {
- // FIXME: make this the primary ctor method.
- return get(Context, std::vector<Constant*>(Vals, Vals+NumVals), Packed);
+Constant *ConstantStruct::get(StructType *T, ...) {
+ va_list ap;
+ SmallVector<Constant*, 8> Values;
+ va_start(ap, T);
+ while (Constant *Val = va_arg(ap, llvm::Constant*))
+ Values.push_back(Val);
+ va_end(ap);
+ return get(T, Values);
}
-ConstantVector::ConstantVector(const 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.
-Constant* ConstantVector::get(const VectorType* T,
- const std::vector<Constant*>& V) {
- assert(!V.empty() && "Vectors can't be empty");
- LLVMContext &Context = T->getContext();
- LLVMContextImpl *pImpl = Context.pImpl;
-
- // If this is an all-undef or alll-zero vector, return a
+Constant *ConstantVector::get(ArrayRef<Constant*> V) {
+ assert(!V.empty() && "Vectors can't be empty");
+ VectorType *T = VectorType::get(V.front()->getType(), V.size());
+ LLVMContextImpl *pImpl = T->getContext().pImpl;
+
+ // If this is an all-undef or all-zero vector, return a
// ConstantAggregateZero or UndefValue.
Constant *C = V[0];
bool isZero = C->isNullValue();
break;
}
}
-
+
if (isZero)
return ConstantAggregateZero::get(T);
if (isUndef)
return UndefValue::get(T);
-
- return pImpl->VectorConstants.getOrCreate(T, V);
-}
-
-Constant* ConstantVector::get(const std::vector<Constant*>& V) {
- assert(!V.empty() && "Cannot infer type if V is empty");
- return get(VectorType::get(V.front()->getType(),V.size()), V);
-}
-
-Constant* ConstantVector::get(Constant* const* Vals, unsigned NumVals) {
- // FIXME: make this the primary ctor method.
- return get(std::vector<Constant*>(Vals, Vals+NumVals));
-}
-
-Constant* ConstantExpr::getNSWNeg(Constant* C) {
- assert(C->getType()->isIntOrIntVectorTy() &&
- "Cannot NEG a nonintegral value!");
- return getNSWSub(ConstantFP::getZeroValueForNegation(C->getType()), C);
-}
-
-Constant* ConstantExpr::getNUWNeg(Constant* C) {
- assert(C->getType()->isIntOrIntVectorTy() &&
- "Cannot NEG a nonintegral value!");
- return getNUWSub(ConstantFP::getZeroValueForNegation(C->getType()), C);
-}
-
-Constant* ConstantExpr::getNSWAdd(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::Add, C1, C2,
- OverflowingBinaryOperator::NoSignedWrap);
-}
-Constant* ConstantExpr::getNUWAdd(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::Add, C1, C2,
- OverflowingBinaryOperator::NoUnsignedWrap);
-}
+ // Check to see if all of the elements are ConstantFP or ConstantInt and if
+ // the element type is compatible with ConstantDataVector. If so, use it.
+ if (ConstantDataSequential::isElementTypeCompatible(C->getType())) {
+ // We speculatively build the elements here even if it turns out that there
+ // is a constantexpr or something else weird in the array, since it is so
+ // uncommon for that to happen.
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(C)) {
+ if (CI->getType()->isIntegerTy(8)) {
+ SmallVector<uint8_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataVector::get(C->getContext(), Elts);
+ } else if (CI->getType()->isIntegerTy(16)) {
+ SmallVector<uint16_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataVector::get(C->getContext(), Elts);
+ } else if (CI->getType()->isIntegerTy(32)) {
+ SmallVector<uint32_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataVector::get(C->getContext(), Elts);
+ } else if (CI->getType()->isIntegerTy(64)) {
+ SmallVector<uint64_t, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(V[i]))
+ Elts.push_back(CI->getZExtValue());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataVector::get(C->getContext(), Elts);
+ }
+ }
-Constant* ConstantExpr::getNSWSub(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::Sub, C1, C2,
- OverflowingBinaryOperator::NoSignedWrap);
-}
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(C)) {
+ if (CFP->getType()->isFloatTy()) {
+ SmallVector<float, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(V[i]))
+ Elts.push_back(CFP->getValueAPF().convertToFloat());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataVector::get(C->getContext(), Elts);
+ } else if (CFP->getType()->isDoubleTy()) {
+ SmallVector<double, 16> Elts;
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(V[i]))
+ Elts.push_back(CFP->getValueAPF().convertToDouble());
+ else
+ break;
+ if (Elts.size() == V.size())
+ return ConstantDataVector::get(C->getContext(), Elts);
+ }
+ }
+ }
-Constant* ConstantExpr::getNUWSub(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::Sub, C1, C2,
- OverflowingBinaryOperator::NoUnsignedWrap);
+ // Otherwise, the element type isn't compatible with ConstantDataVector, or
+ // the operand list constants a ConstantExpr or something else strange.
+ return pImpl->VectorConstants.getOrCreate(T, V);
}
-Constant* ConstantExpr::getNSWMul(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::Mul, C1, C2,
- OverflowingBinaryOperator::NoSignedWrap);
-}
+Constant *ConstantVector::getSplat(unsigned NumElts, Constant *V) {
+ // If this splat is compatible with ConstantDataVector, use it instead of
+ // ConstantVector.
+ if ((isa<ConstantFP>(V) || isa<ConstantInt>(V)) &&
+ ConstantDataSequential::isElementTypeCompatible(V->getType()))
+ return ConstantDataVector::getSplat(NumElts, V);
-Constant* ConstantExpr::getNUWMul(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::Mul, C1, C2,
- OverflowingBinaryOperator::NoUnsignedWrap);
+ SmallVector<Constant*, 32> Elts(NumElts, V);
+ return get(Elts);
}
-Constant* ConstantExpr::getExactSDiv(Constant* C1, Constant* C2) {
- return getTy(C1->getType(), Instruction::SDiv, C1, C2,
- SDivOperator::IsExact);
-}
// 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
for (; GEPI != E; ++GEPI, ++OI) {
ConstantInt *CI = dyn_cast<ConstantInt>(*OI);
if (!CI) return false;
- if (
const ArrayType *ATy = dyn_cast<ArrayType>(*GEPI))
+ if (ArrayType *ATy = dyn_cast<ArrayType>(*GEPI))
if (CI->getValue().getActiveBits() > 64 ||
CI->getZExtValue() >= ATy->getNumElements())
return false;
getOpcode() == Instruction::InsertValue;
}
-const SmallVector<unsigned, 4> &ConstantExpr::getIndices() const {
+ArrayRef<unsigned> ConstantExpr::getIndices() const {
if (const ExtractValueConstantExpr *EVCE =
dyn_cast<ExtractValueConstantExpr>(this))
return EVCE->Indices;
}
unsigned ConstantExpr::getPredicate() const {
- assert(getOpcode() == Instruction::FCmp ||
- getOpcode() == Instruction::ICmp);
+ assert(isCompare());
return ((const CompareConstantExpr*)this)->predicate;
}
/// one, but with the specified operand set to the specified value.
Constant *
ConstantExpr::getWithOperandReplaced(unsigned OpNo, Constant *Op) const {
- assert(OpNo < getNumOperands() && "Operand num is out of range!");
assert(Op->getType() == getOperand(OpNo)->getType() &&
"Replacing operand with value of different type!");
if (getOperand(OpNo) == Op)
return const_cast<ConstantExpr*>(this);
-
- Constant *Op0, *Op1, *Op2;
- switch (getOpcode()) {
- case Instruction::Trunc:
- case Instruction::ZExt:
- case Instruction::SExt:
- case Instruction::FPTrunc:
- case Instruction::FPExt:
- case Instruction::UIToFP:
- case Instruction::SIToFP:
- case Instruction::FPToUI:
- case Instruction::FPToSI:
- case Instruction::PtrToInt:
- case Instruction::IntToPtr:
- case Instruction::BitCast:
- return ConstantExpr::getCast(getOpcode(), Op, getType());
- case Instruction::Select:
- Op0 = (OpNo == 0) ? Op : getOperand(0);
- Op1 = (OpNo == 1) ? Op : getOperand(1);
- Op2 = (OpNo == 2) ? Op : getOperand(2);
- return ConstantExpr::getSelect(Op0, Op1, Op2);
- case Instruction::InsertElement:
- Op0 = (OpNo == 0) ? Op : getOperand(0);
- Op1 = (OpNo == 1) ? Op : getOperand(1);
- Op2 = (OpNo == 2) ? Op : getOperand(2);
- return ConstantExpr::getInsertElement(Op0, Op1, Op2);
- case Instruction::ExtractElement:
- Op0 = (OpNo == 0) ? Op : getOperand(0);
- Op1 = (OpNo == 1) ? Op : getOperand(1);
- return ConstantExpr::getExtractElement(Op0, Op1);
- case Instruction::ShuffleVector:
- Op0 = (OpNo == 0) ? Op : getOperand(0);
- Op1 = (OpNo == 1) ? Op : getOperand(1);
- Op2 = (OpNo == 2) ? Op : getOperand(2);
- return ConstantExpr::getShuffleVector(Op0, Op1, Op2);
- case Instruction::GetElementPtr: {
- SmallVector<Constant*, 8> Ops;
- Ops.resize(getNumOperands()-1);
- 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());
- 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());
- }
- default:
- assert(getNumOperands() == 2 && "Must be binary operator?");
- Op0 = (OpNo == 0) ? Op : getOperand(0);
- Op1 = (OpNo == 1) ? Op : getOperand(1);
- return ConstantExpr::get(getOpcode(), Op0, Op1, SubclassOptionalData);
- }
+
+ SmallVector<Constant*, 8> NewOps;
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ NewOps.push_back(i == OpNo ? Op : getOperand(i));
+
+ return getWithOperands(NewOps);
}
/// getWithOperands - This returns the current constant expression with the
-/// operands replaced with the specified values. The specified operands must
-/// match count and type with the existing ones.
+/// operands replaced with the specified values. The specified array must
+/// have the same number of operands as our current one.
Constant *ConstantExpr::
-getWithOperands(Constant* const *Ops, unsigned NumOps) const {
- assert(NumOps == getNumOperands() && "Operand count mismatch!");
- bool AnyChange = false;
- for (unsigned i = 0; i != NumOps; ++i) {
- assert(Ops[i]->getType() == getOperand(i)->getType() &&
- "Operand type mismatch!");
+getWithOperands(ArrayRef<Constant*> Ops, Type *Ty) const {
+ assert(Ops.size() == getNumOperands() && "Operand count mismatch!");
+ bool AnyChange = Ty != getType();
+ for (unsigned i = 0; i != Ops.size(); ++i)
AnyChange |= Ops[i] != getOperand(i);
- }
+
if (!AnyChange) // No operands changed, return self.
return const_cast<ConstantExpr*>(this);
case Instruction::PtrToInt:
case Instruction::IntToPtr:
case Instruction::BitCast:
- return ConstantExpr::getCast(getOpcode(), Ops[0], getType());
+ return ConstantExpr::getCast(getOpcode(), Ops[0], Ty);
case Instruction::Select:
return ConstantExpr::getSelect(Ops[0], Ops[1], Ops[2]);
case Instruction::InsertElement:
return ConstantExpr::getInsertElement(Ops[0], Ops[1], Ops[2]);
case Instruction::ExtractElement:
return ConstantExpr::getExtractElement(Ops[0], Ops[1]);
+ case Instruction::InsertValue:
+ return ConstantExpr::getInsertValue(Ops[0], Ops[1], getIndices());
+ case Instruction::ExtractValue:
+ return ConstantExpr::getExtractValue(Ops[0], getIndices());
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], NumOps-1) :
- ConstantExpr::getGetElementPtr(Ops[0], &Ops[1], NumOps-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]);
//===----------------------------------------------------------------------===//
// isValueValidForType implementations
-bool ConstantInt::isValueValidForType(const Type *Ty, uint64_t Val) {
- unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth(); // assert okay
- if (Ty == Type::getInt1Ty(Ty->getContext()))
+bool ConstantInt::isValueValidForType(Type *Ty, uint64_t Val) {
+ unsigned NumBits = Ty->getIntegerBitWidth(); // assert okay
+ if (Ty->isIntegerTy(1))
return Val == 0 || Val == 1;
if (NumBits >= 64)
return true; // always true, has to fit in largest type
return Val <= Max;
}
-bool ConstantInt::isValueValidForType(const Type *Ty, int64_t Val) {
- unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth(); // assert okay
- if (Ty == Type::getInt1Ty(Ty->getContext()))
+bool ConstantInt::isValueValidForType(Type *Ty, int64_t Val) {
+ unsigned NumBits = Ty->getIntegerBitWidth();
+ if (Ty->isIntegerTy(1))
return Val == 0 || Val == 1 || Val == -1;
if (NumBits >= 64)
return true; // always true, has to fit in largest type
return (Val >= Min && Val <= Max);
}
-bool ConstantFP::isValueValidForType(const Type *Ty, const APFloat& Val) {
+bool ConstantFP::isValueValidForType(Type *Ty, const APFloat& Val) {
// convert modifies in place, so make a copy.
APFloat Val2 = APFloat(Val);
bool losesInfo;
return false; // These can't be represented as floating point!
// FIXME rounding mode needs to be more flexible
+ case Type::HalfTyID: {
+ if (&Val2.getSemantics() == &APFloat::IEEEhalf)
+ return true;
+ Val2.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven, &losesInfo);
+ return !losesInfo;
+ }
case Type::FloatTyID: {
if (&Val2.getSemantics() == &APFloat::IEEEsingle)
return true;
return !losesInfo;
}
case Type::DoubleTyID: {
- if (&Val2.getSemantics() == &APFloat::IEEEsingle ||
+ if (&Val2.getSemantics() == &APFloat::IEEEhalf ||
+ &Val2.getSemantics() == &APFloat::IEEEsingle ||
&Val2.getSemantics() == &APFloat::IEEEdouble)
return true;
Val2.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &losesInfo);
return !losesInfo;
}
case Type::X86_FP80TyID:
- return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ return &Val2.getSemantics() == &APFloat::IEEEhalf ||
+ &Val2.getSemantics() == &APFloat::IEEEsingle ||
&Val2.getSemantics() == &APFloat::IEEEdouble ||
&Val2.getSemantics() == &APFloat::x87DoubleExtended;
case Type::FP128TyID:
- return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ return &Val2.getSemantics() == &APFloat::IEEEhalf ||
+ &Val2.getSemantics() == &APFloat::IEEEsingle ||
&Val2.getSemantics() == &APFloat::IEEEdouble ||
&Val2.getSemantics() == &APFloat::IEEEquad;
case Type::PPC_FP128TyID:
- return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ return &Val2.getSemantics() == &APFloat::IEEEhalf ||
+ &Val2.getSemantics() == &APFloat::IEEEsingle ||
&Val2.getSemantics() == &APFloat::IEEEdouble ||
&Val2.getSemantics() == &APFloat::PPCDoubleDouble;
}
}
+
//===----------------------------------------------------------------------===//
// Factory Function Implementation
-ConstantAggregateZero* ConstantAggregateZero::get(const Type* Ty) {
+ConstantAggregateZero *ConstantAggregateZero::get(Type *Ty) {
assert((Ty->isStructTy() || Ty->isArrayTy() || Ty->isVectorTy()) &&
"Cannot create an aggregate zero of non-aggregate type!");
- LLVMContextImpl *pImpl = Ty->getContext().pImpl;
- return pImpl->AggZeroConstants.getOrCreate(Ty, 0);
+ ConstantAggregateZero *&Entry = Ty->getContext().pImpl->CAZConstants[Ty];
+ if (Entry == 0)
+ Entry = new ConstantAggregateZero(Ty);
+
+ return Entry;
}
-/// destroyConstant - Remove the constant from the constant table...
+/// destroyConstant - Remove the constant from the constant table.
///
void ConstantAggregateZero::destroyConstant() {
- getRawType()->getContext().pImpl->AggZeroConstants.remove(this);
+ getContext().pImpl->CAZConstants.erase(getType());
destroyConstantImpl();
}
/// destroyConstant - Remove the constant from the constant table...
///
void ConstantArray::destroyConstant() {
- getRawType()->getContext().pImpl->ArrayConstants.remove(this);
+ getType()->getContext().pImpl->ArrayConstants.remove(this);
destroyConstantImpl();
}
-/// isString - This method returns true if the array is an array of i8, and
-/// if the elements of the array are all ConstantInt's.
-bool ConstantArray::isString() const {
- // Check the element type for i8...
- if (!getType()->getElementType()->isIntegerTy(8))
- return false;
- // Check the elements to make sure they are all integers, not constant
- // expressions.
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
- if (!isa<ConstantInt>(getOperand(i)))
- return false;
- return true;
-}
-
-/// isCString - This method returns true if the array is a string (see
-/// isString) and it ends in a null byte \\0 and does not contains any other
-/// null bytes except its terminator.
-bool ConstantArray::isCString() const {
- // Check the element type for i8...
- if (!getType()->getElementType()->isIntegerTy(8))
- return false;
-
- // Last element must be a null.
- if (!getOperand(getNumOperands()-1)->isNullValue())
- return false;
- // Other elements must be non-null integers.
- for (unsigned i = 0, e = getNumOperands()-1; i != e; ++i) {
- if (!isa<ConstantInt>(getOperand(i)))
- return false;
- if (getOperand(i)->isNullValue())
- return false;
- }
- return true;
-}
-
-
-/// getAsString - If the sub-element type of this array is i8
-/// then this method converts the array to an std::string and returns it.
-/// Otherwise, it asserts out.
-///
-std::string ConstantArray::getAsString() const {
- assert(isString() && "Not a string!");
- std::string Result;
- Result.reserve(getNumOperands());
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
- Result.push_back((char)cast<ConstantInt>(getOperand(i))->getZExtValue());
- return Result;
-}
-
//---- ConstantStruct::get() implementation...
//
-namespace llvm {
-
-}
-
// destroyConstant - Remove the constant from the constant table...
//
void ConstantStruct::destroyConstant() {
- getRawType()->getContext().pImpl->StructConstants.remove(this);
+ getType()->getContext().pImpl->StructConstants.remove(this);
destroyConstantImpl();
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantVector::destroyConstant() {
- getRawType()->getContext().pImpl->VectorConstants.remove(this);
+ getType()->getContext().pImpl->VectorConstants.remove(this);
destroyConstantImpl();
}
-/// This function will return true iff every element in this vector constant
-/// is set to all ones.
-/// @returns true iff this constant's emements are all set to all ones.
-/// @brief Determine if the value is all ones.
-bool ConstantVector::isAllOnesValue() const {
- // Check out first element.
- const Constant *Elt = getOperand(0);
- const ConstantInt *CI = dyn_cast<ConstantInt>(Elt);
- if (!CI || !CI->isAllOnesValue()) return false;
- // 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;
-}
-
/// getSplatValue - If this is a splat constant, where all of the
/// elements have the same value, return that value. Otherwise return null.
-Constant *ConstantVector::getSplatValue() {
+Constant *ConstantVector::getSplatValue() const {
// Check out first element.
Constant *Elt = getOperand(0);
// 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 0;
+ if (getOperand(I) != Elt)
+ return 0;
return Elt;
}
//---- ConstantPointerNull::get() implementation.
//
-ConstantPointerNull *ConstantPointerNull::get(const PointerType *Ty) {
- return Ty->getContext().pImpl->NullPtrConstants.getOrCreate(Ty, 0);
+ConstantPointerNull *ConstantPointerNull::get(PointerType *Ty) {
+ ConstantPointerNull *&Entry = Ty->getContext().pImpl->CPNConstants[Ty];
+ if (Entry == 0)
+ Entry = new ConstantPointerNull(Ty);
+
+ return Entry;
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantPointerNull::destroyConstant() {
- getRawType()->getContext().pImpl->NullPtrConstants.remove(this);
+ getContext().pImpl->CPNConstants.erase(getType());
+ // Free the constant and any dangling references to it.
destroyConstantImpl();
}
//---- UndefValue::get() implementation.
//
-UndefValue *UndefValue::get(const Type *Ty) {
- return Ty->getContext().pImpl->UndefValueConstants.getOrCreate(Ty, 0);
+UndefValue *UndefValue::get(Type *Ty) {
+ UndefValue *&Entry = Ty->getContext().pImpl->UVConstants[Ty];
+ if (Entry == 0)
+ Entry = new UndefValue(Ty);
+
+ return Entry;
}
// destroyConstant - Remove the constant from the constant table.
//
void UndefValue::destroyConstant() {
- getRawType()->getContext().pImpl->UndefValueConstants.remove(this);
+ // Free the constant and any dangling references to it.
+ getContext().pImpl->UVConstants.erase(getType());
destroyConstantImpl();
}
F->getContext().pImpl->BlockAddresses[std::make_pair(F, BB)];
if (BA == 0)
BA = new BlockAddress(F, BB);
-
+
assert(BA->getFunction() == F && "Basic block moved between functions");
return BA;
}
// destroyConstant - Remove the constant from the constant table.
//
void BlockAddress::destroyConstant() {
- getFunction()->getRawType()->getContext().pImpl
+ getFunction()->getType()->getContext().pImpl
->BlockAddresses.erase(std::make_pair(getFunction(), getBasicBlock()));
getBasicBlock()->AdjustBlockAddressRefCount(-1);
destroyConstantImpl();
// case, we have to remove the map entry.
Function *NewF = getFunction();
BasicBlock *NewBB = getBasicBlock();
-
+
if (U == &Op<0>())
NewF = cast<Function>(To);
else
NewBB = cast<BasicBlock>(To);
-
+
// See if the 'new' entry already exists, if not, just update this in place
// and return early.
BlockAddress *&NewBA =
getContext().pImpl->BlockAddresses[std::make_pair(NewF, NewBB)];
if (NewBA == 0) {
getBasicBlock()->AdjustBlockAddressRefCount(-1);
-
+
// Remove the old entry, this can't cause the map to rehash (just a
// tombstone will get added).
getContext().pImpl->BlockAddresses.erase(std::make_pair(getFunction(),
// Otherwise, I do need to replace this with an existing value.
assert(NewBA != this && "I didn't contain From!");
-
+
// Everyone using this now uses the replacement.
- uncheckedReplaceAllUsesWith(NewBA);
-
+ replaceAllUsesWith(NewBA);
+
destroyConstant();
}
/// This is a utility function to handle folding of casts and lookup of the
/// cast in the ExprConstants map. It is used by the various get* methods below.
static inline Constant *getFoldedCast(
- Instruction::CastOps opc, Constant *C, const Type *Ty) {
+ Instruction::CastOps opc, Constant *C, Type *Ty) {
assert(Ty->isFirstClassType() && "Cannot cast to an aggregate type!");
// Fold a few common cases
if (Constant *FC = ConstantFoldCastInstruction(opc, C, Ty))
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> argVec(1, C);
ExprMapKeyType Key(opc, argVec);
-
+
return pImpl->ExprConstants.getOrCreate(Ty, Key);
}
-
-Constant *ConstantExpr::getCast(unsigned oc, Constant *C, const Type *Ty) {
+
+Constant *ConstantExpr::getCast(unsigned oc, Constant *C, Type *Ty) {
Instruction::CastOps opc = Instruction::CastOps(oc);
assert(Instruction::isCast(opc) && "opcode out of range");
assert(C && Ty && "Null arguments to getCast");
switch (opc) {
default:
llvm_unreachable("Invalid cast opcode");
- break;
case Instruction::Trunc: return getTrunc(C, Ty);
case Instruction::ZExt: return getZExt(C, Ty);
case Instruction::SExt: return getSExt(C, Ty);
case Instruction::IntToPtr: return getIntToPtr(C, Ty);
case Instruction::BitCast: return getBitCast(C, Ty);
}
- return 0;
-}
+}
-Constant *ConstantExpr::getZExtOrBitCast(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getZExtOrBitCast(Constant *C, Type *Ty) {
if (C->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return getBitCast(C, Ty);
return getZExt(C, Ty);
}
-Constant *ConstantExpr::getSExtOrBitCast(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getSExtOrBitCast(Constant *C, Type *Ty) {
if (C->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return getBitCast(C, Ty);
return getSExt(C, Ty);
}
-Constant *ConstantExpr::getTruncOrBitCast(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getTruncOrBitCast(Constant *C, Type *Ty) {
if (C->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits())
return getBitCast(C, Ty);
return getTrunc(C, Ty);
}
-Constant *ConstantExpr::getPointerCast(Constant *S, const Type *Ty) {
+Constant *ConstantExpr::getPointerCast(Constant *S, Type *Ty) {
assert(S->getType()->isPointerTy() && "Invalid cast");
assert((Ty->isIntegerTy() || Ty->isPointerTy()) && "Invalid cast");
return getBitCast(S, Ty);
}
-Constant *ConstantExpr::getIntegerCast(Constant *C, const Type *Ty,
+Constant *ConstantExpr::getIntegerCast(Constant *C, Type *Ty,
bool isSigned) {
assert(C->getType()->isIntOrIntVectorTy() &&
Ty->isIntOrIntVectorTy() && "Invalid cast");
return getCast(opcode, C, Ty);
}
-Constant *ConstantExpr::getFPCast(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getFPCast(Constant *C, Type *Ty) {
assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() &&
"Invalid cast");
unsigned SrcBits = C->getType()->getScalarSizeInBits();
if (SrcBits == DstBits)
return C; // Avoid a useless cast
Instruction::CastOps opcode =
- (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt);
+ (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt);
return getCast(opcode, C, Ty);
}
-Constant *ConstantExpr::getTrunc(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getTrunc(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::Trunc, C, Ty);
}
-Constant *ConstantExpr::getSExt(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getSExt(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::SExt, C, Ty);
}
-Constant *ConstantExpr::getZExt(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getZExt(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::ZExt, C, Ty);
}
-Constant *ConstantExpr::getFPTrunc(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getFPTrunc(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::FPTrunc, C, Ty);
}
-Constant *ConstantExpr::getFPExtend(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getFPExtend(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::FPExt, C, Ty);
}
-Constant *ConstantExpr::getUIToFP(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getUIToFP(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::UIToFP, C, Ty);
}
-Constant *ConstantExpr::getSIToFP(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getSIToFP(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::SIToFP, C, Ty);
}
-Constant *ConstantExpr::getFPToUI(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getFPToUI(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::FPToUI, C, Ty);
}
-Constant *ConstantExpr::getFPToSI(Constant *C, const Type *Ty) {
+Constant *ConstantExpr::getFPToSI(Constant *C, Type *Ty) {
#ifndef NDEBUG
bool fromVec = C->getType()->getTypeID() == Type::VectorTyID;
bool toVec = Ty->getTypeID() == Type::VectorTyID;
return getFoldedCast(Instruction::FPToSI, C, Ty);
}
-Constant *ConstantExpr::getPtrToInt(Constant *C, const Type *DstTy) {
- assert(C->getType()->isPointerTy() && "PtrToInt source must be pointer");
- assert(DstTy->isIntegerTy() && "PtrToInt destination must be integral");
+Constant *ConstantExpr::getPtrToInt(Constant *C, Type *DstTy) {
+ assert(C->getType()->getScalarType()->isPointerTy() &&
+ "PtrToInt source must be pointer or pointer vector");
+ assert(DstTy->getScalarType()->isIntegerTy() &&
+ "PtrToInt destination must be integer or integer vector");
+ assert(isa<VectorType>(C->getType()) == isa<VectorType>(DstTy));
+ if (isa<VectorType>(C->getType()))
+ assert(C->getType()->getVectorNumElements()==DstTy->getVectorNumElements()&&
+ "Invalid cast between a different number of vector elements");
return getFoldedCast(Instruction::PtrToInt, C, DstTy);
}
-Constant *ConstantExpr::getIntToPtr(Constant *C, const Type *DstTy) {
- assert(C->getType()->isIntegerTy() && "IntToPtr source must be integral");
- assert(DstTy->isPointerTy() && "IntToPtr destination must be a pointer");
+Constant *ConstantExpr::getIntToPtr(Constant *C, Type *DstTy) {
+ assert(C->getType()->getScalarType()->isIntegerTy() &&
+ "IntToPtr source must be integer or integer vector");
+ assert(DstTy->getScalarType()->isPointerTy() &&
+ "IntToPtr destination must be a pointer or pointer vector");
+ assert(isa<VectorType>(C->getType()) == isa<VectorType>(DstTy));
+ if (isa<VectorType>(C->getType()))
+ assert(C->getType()->getVectorNumElements()==DstTy->getVectorNumElements()&&
+ "Invalid cast between a different number of vector elements");
return getFoldedCast(Instruction::IntToPtr, C, DstTy);
}
-Constant *ConstantExpr::getBitCast(Constant *C, const Type *DstTy) {
+Constant *ConstantExpr::getBitCast(Constant *C, Type *DstTy) {
assert(CastInst::castIsValid(Instruction::BitCast, C, DstTy) &&
"Invalid constantexpr bitcast!");
-
+
// It is common to ask for a bitcast of a value to its own type, handle this
// speedily.
if (C->getType() == DstTy) return C;
-
+
return getFoldedCast(Instruction::BitCast, C, DstTy);
}
-Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode,
- Constant *C1, Constant *C2,
- unsigned Flags) {
- // Check the operands for consistency first
+Constant *ConstantExpr::get(unsigned Opcode, Constant *C1, Constant *C2,
+ unsigned Flags) {
+ // Check the operands for consistency first.
assert(Opcode >= Instruction::BinaryOpsBegin &&
Opcode < Instruction::BinaryOpsEnd &&
"Invalid opcode in binary constant expression");
assert(C1->getType() == C2->getType() &&
"Operand types in binary constant expression should match");
- if (ReqTy == C1->getType() || ReqTy == Type::getInt1Ty(ReqTy->getContext()))
- if (Constant *FC = ConstantFoldBinaryInstruction(Opcode, C1, C2))
- return FC; // Fold a few common cases...
-
- std::vector<Constant*> argVec(1, C1); argVec.push_back(C2);
- ExprMapKeyType Key(Opcode, argVec, 0, Flags);
-
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
- return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
-}
-
-Constant *ConstantExpr::getCompareTy(unsigned short predicate,
- Constant *C1, Constant *C2) {
- switch (predicate) {
- default: llvm_unreachable("Invalid CmpInst predicate");
- case CmpInst::FCMP_FALSE: case CmpInst::FCMP_OEQ: case CmpInst::FCMP_OGT:
- case CmpInst::FCMP_OGE: case CmpInst::FCMP_OLT: case CmpInst::FCMP_OLE:
- case CmpInst::FCMP_ONE: case CmpInst::FCMP_ORD: case CmpInst::FCMP_UNO:
- case CmpInst::FCMP_UEQ: case CmpInst::FCMP_UGT: case CmpInst::FCMP_UGE:
- case CmpInst::FCMP_ULT: case CmpInst::FCMP_ULE: case CmpInst::FCMP_UNE:
- case CmpInst::FCMP_TRUE:
- return getFCmp(predicate, C1, C2);
-
- case CmpInst::ICMP_EQ: case CmpInst::ICMP_NE: case CmpInst::ICMP_UGT:
- case CmpInst::ICMP_UGE: case CmpInst::ICMP_ULT: case CmpInst::ICMP_ULE:
- case CmpInst::ICMP_SGT: case CmpInst::ICMP_SGE: case CmpInst::ICMP_SLT:
- case CmpInst::ICMP_SLE:
- return getICmp(predicate, C1, C2);
- }
-}
-
-Constant *ConstantExpr::get(unsigned Opcode, Constant *C1, Constant *C2,
- unsigned Flags) {
#ifndef NDEBUG
switch (Opcode) {
case Instruction::Add:
}
#endif
- return getTy(C1->getType(), Opcode, C1, C2, Flags);
+ if (Constant *FC = ConstantFoldBinaryInstruction(Opcode, C1, C2))
+ return FC; // Fold a few common cases.
+
+ std::vector<Constant*> argVec(1, C1);
+ argVec.push_back(C2);
+ ExprMapKeyType Key(Opcode, argVec, 0, Flags);
+
+ LLVMContextImpl *pImpl = C1->getContext().pImpl;
+ return pImpl->ExprConstants.getOrCreate(C1->getType(), Key);
}
-Constant* ConstantExpr::getSizeOf(const Type* Ty) {
+Constant *ConstantExpr::getSizeOf(Type* Ty) {
// sizeof is implemented as: (i64) gep (Ty*)null, 1
// 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* ConstantExpr::getAlignOf(const Type* Ty) {
+Constant *ConstantExpr::getAlignOf(Type* Ty) {
// alignof is implemented as: (i64) gep ({i1,Ty}*)null, 0, 1
// Note that a non-inbounds gep is used, as null isn't within any object.
- const Type *AligningTy = StructType::get(Ty->getContext(),
- Type::getInt1Ty(Ty->getContext()), Ty, NULL);
- Constant *NullPtr = Constant::getNullValue(AligningTy->getPointerTo());
+ Type *AligningTy =
+ StructType::get(Type::getInt1Ty(Ty->getContext()), Ty, NULL);
+ Constant *NullPtr = Constant::getNullValue(AligningTy->getPointerTo(Ty));
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()));
}
-Constant* ConstantExpr::getOffsetOf(const StructType* STy, unsigned FieldNo) {
+Constant *ConstantExpr::getOffsetOf(StructType* STy, unsigned FieldNo) {
return getOffsetOf(STy, ConstantInt::get(Type::getInt32Ty(STy->getContext()),
FieldNo));
}
-Constant* ConstantExpr::getOffsetOf(const Type* Ty, Constant *FieldNo) {
+Constant *ConstantExpr::getOffsetOf(Type* Ty, Constant *FieldNo) {
// offsetof is implemented as: (i64) gep (Ty*)null, 0, FieldNo
// Note that a non-inbounds gep is used, as null isn't within any object.
Constant *GEPIdx[] = {
FieldNo
};
Constant *GEP = getGetElementPtr(
- Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx, 2);
+ Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx);
return getPtrToInt(GEP,
Type::getInt64Ty(Ty->getContext()));
}
-Constant *ConstantExpr::getCompare(unsigned short pred,
- Constant *C1, Constant *C2) {
+Constant *ConstantExpr::getCompare(unsigned short Predicate,
+ Constant *C1, Constant *C2) {
assert(C1->getType() == C2->getType() && "Op types should be identical!");
- return getCompareTy(pred, C1, C2);
+
+ switch (Predicate) {
+ default: llvm_unreachable("Invalid CmpInst predicate");
+ case CmpInst::FCMP_FALSE: case CmpInst::FCMP_OEQ: case CmpInst::FCMP_OGT:
+ case CmpInst::FCMP_OGE: case CmpInst::FCMP_OLT: case CmpInst::FCMP_OLE:
+ case CmpInst::FCMP_ONE: case CmpInst::FCMP_ORD: case CmpInst::FCMP_UNO:
+ case CmpInst::FCMP_UEQ: case CmpInst::FCMP_UGT: case CmpInst::FCMP_UGE:
+ case CmpInst::FCMP_ULT: case CmpInst::FCMP_ULE: case CmpInst::FCMP_UNE:
+ case CmpInst::FCMP_TRUE:
+ return getFCmp(Predicate, C1, C2);
+
+ case CmpInst::ICMP_EQ: case CmpInst::ICMP_NE: case CmpInst::ICMP_UGT:
+ case CmpInst::ICMP_UGE: case CmpInst::ICMP_ULT: case CmpInst::ICMP_ULE:
+ case CmpInst::ICMP_SGT: case CmpInst::ICMP_SGE: case CmpInst::ICMP_SLT:
+ case CmpInst::ICMP_SLE:
+ return getICmp(Predicate, C1, C2);
+ }
}
-Constant *ConstantExpr::getSelectTy(const Type *ReqTy, Constant *C,
- Constant *V1, Constant *V2) {
+Constant *ConstantExpr::getSelect(Constant *C, Constant *V1, Constant *V2) {
assert(!SelectInst::areInvalidOperands(C, V1, V2)&&"Invalid select operands");
- if (ReqTy == V1->getType())
- if (Constant *SC = ConstantFoldSelectInstruction(C, V1, V2))
- return SC; // Fold common cases
+ if (Constant *SC = ConstantFoldSelectInstruction(C, V1, V2))
+ return SC; // Fold common cases
std::vector<Constant*> argVec(3, C);
argVec[1] = V1;
argVec[2] = V2;
ExprMapKeyType Key(Instruction::Select, argVec);
-
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
- return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
-}
-template<typename IndexTy>
-Constant *ConstantExpr::getGetElementPtrTy(const Type *ReqTy, Constant *C,
- IndexTy const *Idxs,
- unsigned NumIdx) {
- assert(GetElementPtrInst::getIndexedType(C->getType(), Idxs,
- Idxs+NumIdx) ==
- cast<PointerType>(ReqTy)->getElementType() &&
- "GEP indices invalid!");
-
- if (Constant *FC = ConstantFoldGetElementPtr(C, /*inBounds=*/false,
- Idxs, NumIdx))
- return FC; // Fold a few common cases...
-
- assert(C->getType()->isPointerTy() &&
- "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.push_back(C);
- for (unsigned i = 0; i != NumIdx; ++i)
- ArgVec.push_back(cast<Constant>(Idxs[i]));
- const ExprMapKeyType Key(Instruction::GetElementPtr, ArgVec);
-
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
- return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
+ LLVMContextImpl *pImpl = C->getContext().pImpl;
+ return pImpl->ExprConstants.getOrCreate(V1->getType(), Key);
}
-template<typename IndexTy>
-Constant *ConstantExpr::getInBoundsGetElementPtrTy(const Type *ReqTy,
- Constant *C,
- IndexTy const *Idxs,
- unsigned NumIdx) {
- assert(GetElementPtrInst::getIndexedType(C->getType(), Idxs,
- Idxs+NumIdx) ==
- cast<PointerType>(ReqTy)->getElementType() &&
- "GEP indices invalid!");
+Constant *ConstantExpr::getGetElementPtr(Constant *C, ArrayRef<Value *> Idxs,
+ bool InBounds) {
+ if (Constant *FC = ConstantFoldGetElementPtr(C, InBounds, Idxs))
+ return FC; // Fold a few common cases.
- if (Constant *FC = ConstantFoldGetElementPtr(C, /*inBounds=*/true,
- Idxs, NumIdx))
- return FC; // Fold a few common cases...
+ // Get the result type of the getelementptr!
+ Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), Idxs);
+ assert(Ty && "GEP indices invalid!");
+ unsigned AS = C->getType()->getPointerAddressSpace();
+ Type *ReqTy = Ty->getPointerTo(AS);
assert(C->getType()->isPointerTy() &&
"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,
- GEPOperator::IsInBounds);
+ InBounds ? GEPOperator::IsInBounds : 0);
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
+ LLVMContextImpl *pImpl = C->getContext().pImpl;
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
-template<typename IndexTy>
-Constant *ConstantExpr::getGetElementPtrImpl(Constant *C, IndexTy const *Idxs,
- unsigned NumIdx) {
- // Get the result type of the getelementptr!
- const Type *Ty =
- GetElementPtrInst::getIndexedType(C->getType(), Idxs, Idxs+NumIdx);
- assert(Ty && "GEP indices invalid!");
- unsigned As = cast<PointerType>(C->getType())->getAddressSpace();
- return getGetElementPtrTy(PointerType::get(Ty, As), C, Idxs, NumIdx);
-}
-
-template<typename IndexTy>
-Constant *ConstantExpr::getInBoundsGetElementPtrImpl(Constant *C,
- IndexTy const *Idxs,
- unsigned NumIdx) {
- // Get the result type of the getelementptr!
- const Type *Ty =
- GetElementPtrInst::getIndexedType(C->getType(), Idxs, Idxs+NumIdx);
- assert(Ty && "GEP indices invalid!");
- unsigned As = cast<PointerType>(C->getType())->getAddressSpace();
- return getInBoundsGetElementPtrTy(PointerType::get(Ty, As), C, Idxs, NumIdx);
-}
-
-Constant *ConstantExpr::getGetElementPtr(Constant *C, Value* const *Idxs,
- unsigned NumIdx) {
- return getGetElementPtrImpl(C, Idxs, NumIdx);
-}
-
-Constant *ConstantExpr::getGetElementPtr(Constant *C, Constant *const *Idxs,
- unsigned NumIdx) {
- return getGetElementPtrImpl(C, Idxs, NumIdx);
-}
-
-Constant *ConstantExpr::getInBoundsGetElementPtr(Constant *C,
- Value* const *Idxs,
- unsigned NumIdx) {
- return getInBoundsGetElementPtrImpl(C, Idxs, NumIdx);
-}
-
-Constant *ConstantExpr::getInBoundsGetElementPtr(Constant *C,
- Constant *const *Idxs,
- unsigned NumIdx) {
- return getInBoundsGetElementPtrImpl(C, Idxs, NumIdx);
-}
-
Constant *
ConstantExpr::getICmp(unsigned short pred, Constant *LHS, Constant *RHS) {
assert(LHS->getType() == RHS->getType());
// Get the key type with both the opcode and predicate
const ExprMapKeyType Key(Instruction::ICmp, ArgVec, pred);
- const Type *ResultTy = Type::getInt1Ty(LHS->getContext());
- if (const VectorType *VT = dyn_cast<VectorType>(LHS->getType()))
+ Type *ResultTy = Type::getInt1Ty(LHS->getContext());
+ if (VectorType *VT = dyn_cast<VectorType>(LHS->getType()))
ResultTy = VectorType::get(ResultTy, VT->getNumElements());
LLVMContextImpl *pImpl = LHS->getType()->getContext().pImpl;
// Get the key type with both the opcode and predicate
const ExprMapKeyType Key(Instruction::FCmp, ArgVec, pred);
- const Type *ResultTy = Type::getInt1Ty(LHS->getContext());
- if (const VectorType *VT = dyn_cast<VectorType>(LHS->getType()))
+ Type *ResultTy = Type::getInt1Ty(LHS->getContext());
+ if (VectorType *VT = dyn_cast<VectorType>(LHS->getType()))
ResultTy = VectorType::get(ResultTy, VT->getNumElements());
LLVMContextImpl *pImpl = LHS->getType()->getContext().pImpl;
return pImpl->ExprConstants.getOrCreate(ResultTy, Key);
}
-Constant *ConstantExpr::getExtractElementTy(const Type *ReqTy, Constant *Val,
- Constant *Idx) {
+Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) {
+ assert(Val->getType()->isVectorTy() &&
+ "Tried to create extractelement operation on non-vector type!");
+ assert(Idx->getType()->isIntegerTy(32) &&
+ "Extractelement index must be i32 type!");
+
if (Constant *FC = ConstantFoldExtractElementInstruction(Val, Idx))
return FC; // Fold a few common cases.
+
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec(1, Val);
ArgVec.push_back(Idx);
const ExprMapKeyType Key(Instruction::ExtractElement,ArgVec);
-
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
+
+ LLVMContextImpl *pImpl = Val->getContext().pImpl;
+ Type *ReqTy = Val->getType()->getVectorElementType();
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
-Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) {
+Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt,
+ Constant *Idx) {
assert(Val->getType()->isVectorTy() &&
- "Tried to create extractelement operation on non-vector type!");
+ "Tried to create insertelement operation on non-vector type!");
+ assert(Elt->getType() == Val->getType()->getVectorElementType() &&
+ "Insertelement types must match!");
assert(Idx->getType()->isIntegerTy(32) &&
- "Extractelement index must be i32 type!");
- return getExtractElementTy(cast<VectorType>(Val->getType())->getElementType(),
- Val, Idx);
-}
+ "Insertelement index must be i32 type!");
-Constant *ConstantExpr::getInsertElementTy(const Type *ReqTy, Constant *Val,
- Constant *Elt, Constant *Idx) {
if (Constant *FC = ConstantFoldInsertElementInstruction(Val, Elt, Idx))
return FC; // Fold a few common cases.
// Look up the constant in the table first to ensure uniqueness
ArgVec.push_back(Elt);
ArgVec.push_back(Idx);
const ExprMapKeyType Key(Instruction::InsertElement,ArgVec);
-
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
- return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
-}
-Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt,
- Constant *Idx) {
- assert(Val->getType()->isVectorTy() &&
- "Tried to create insertelement operation on non-vector type!");
- assert(Elt->getType() == cast<VectorType>(Val->getType())->getElementType()
- && "Insertelement types must match!");
- assert(Idx->getType()->isIntegerTy(32) &&
- "Insertelement index must be i32 type!");
- return getInsertElementTy(Val->getType(), Val, Elt, Idx);
+ LLVMContextImpl *pImpl = Val->getContext().pImpl;
+ return pImpl->ExprConstants.getOrCreate(Val->getType(), Key);
}
-Constant *ConstantExpr::getShuffleVectorTy(const Type *ReqTy, Constant *V1,
- Constant *V2, Constant *Mask) {
+Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2,
+ Constant *Mask) {
+ assert(ShuffleVectorInst::isValidOperands(V1, V2, Mask) &&
+ "Invalid shuffle vector constant expr operands!");
+
if (Constant *FC = ConstantFoldShuffleVectorInstruction(V1, V2, Mask))
- return FC; // Fold a few common cases...
+ return FC; // Fold a few common cases.
+
+ unsigned NElts = Mask->getType()->getVectorNumElements();
+ Type *EltTy = V1->getType()->getVectorElementType();
+ Type *ShufTy = VectorType::get(EltTy, NElts);
+
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec(1, V1);
ArgVec.push_back(V2);
ArgVec.push_back(Mask);
const ExprMapKeyType Key(Instruction::ShuffleVector,ArgVec);
-
- LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
- return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
-}
-
-Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2,
- Constant *Mask) {
- assert(ShuffleVectorInst::isValidOperands(V1, V2, Mask) &&
- "Invalid shuffle vector constant expr operands!");
- unsigned NElts = cast<VectorType>(Mask->getType())->getNumElements();
- const Type *EltTy = cast<VectorType>(V1->getType())->getElementType();
- const Type *ShufTy = VectorType::get(EltTy, NElts);
- return getShuffleVectorTy(ShufTy, V1, V2, Mask);
+ LLVMContextImpl *pImpl = ShufTy->getContext().pImpl;
+ return pImpl->ExprConstants.getOrCreate(ShufTy, Key);
}
-Constant *ConstantExpr::getInsertValueTy(const Type *ReqTy, Constant *Agg,
- Constant *Val,
- const unsigned *Idxs, unsigned NumIdx) {
- assert(ExtractValueInst::getIndexedType(Agg->getType(), Idxs,
- Idxs+NumIdx) == Val->getType() &&
+Constant *ConstantExpr::getInsertValue(Constant *Agg, Constant *Val,
+ ArrayRef<unsigned> Idxs) {
+ assert(ExtractValueInst::getIndexedType(Agg->getType(),
+ Idxs) == Val->getType() &&
"insertvalue indices invalid!");
- assert(Agg->getType() == ReqTy &&
- "insertvalue type invalid!");
assert(Agg->getType()->isFirstClassType() &&
- "Non-first-class type for constant InsertValue expression");
- Constant *FC = ConstantFoldInsertValueInstruction(Agg, Val, Idxs, NumIdx);
- assert(FC && "InsertValue constant expr couldn't be folded!");
+ "Non-first-class type for constant insertvalue expression");
+ Constant *FC = ConstantFoldInsertValueInstruction(Agg, Val, Idxs);
+ assert(FC && "insertvalue constant expr couldn't be folded!");
return FC;
}
-Constant *ConstantExpr::getInsertValue(Constant *Agg, Constant *Val,
- const unsigned *IdxList, unsigned NumIdx) {
+Constant *ConstantExpr::getExtractValue(Constant *Agg,
+ ArrayRef<unsigned> Idxs) {
assert(Agg->getType()->isFirstClassType() &&
- "Tried to create insertelement operation on non-first-class type!");
+ "Tried to create extractelement operation on non-first-class type!");
- const Type *ReqTy = Agg->getType();
-#ifndef NDEBUG
- const Type *ValTy =
- ExtractValueInst::getIndexedType(Agg->getType(), IdxList, IdxList+NumIdx);
-#endif
- assert(ValTy == Val->getType() && "insertvalue indices invalid!");
- return getInsertValueTy(ReqTy, Agg, Val, IdxList, NumIdx);
-}
+ Type *ReqTy = ExtractValueInst::getIndexedType(Agg->getType(), Idxs);
+ (void)ReqTy;
+ assert(ReqTy && "extractvalue indices invalid!");
-Constant *ConstantExpr::getExtractValueTy(const Type *ReqTy, Constant *Agg,
- const unsigned *Idxs, unsigned NumIdx) {
- assert(ExtractValueInst::getIndexedType(Agg->getType(), Idxs,
- Idxs+NumIdx) == ReqTy &&
- "extractvalue indices invalid!");
assert(Agg->getType()->isFirstClassType() &&
"Non-first-class type for constant extractvalue expression");
- Constant *FC = ConstantFoldExtractValueInstruction(Agg, Idxs, NumIdx);
+ Constant *FC = ConstantFoldExtractValueInstruction(Agg, Idxs);
assert(FC && "ExtractValue constant expr couldn't be folded!");
return FC;
}
-Constant *ConstantExpr::getExtractValue(Constant *Agg,
- const unsigned *IdxList, unsigned NumIdx) {
- assert(Agg->getType()->isFirstClassType() &&
- "Tried to create extractelement operation on non-first-class type!");
-
- const Type *ReqTy =
- ExtractValueInst::getIndexedType(Agg->getType(), IdxList, IdxList+NumIdx);
- assert(ReqTy && "extractvalue indices invalid!");
- return getExtractValueTy(ReqTy, Agg, IdxList, NumIdx);
-}
-
-Constant* ConstantExpr::getNeg(Constant* C) {
+Constant *ConstantExpr::getNeg(Constant *C, bool HasNUW, bool HasNSW) {
assert(C->getType()->isIntOrIntVectorTy() &&
"Cannot NEG a nonintegral value!");
- return get(Instruction::Sub,
- ConstantFP::getZeroValueForNegation(C->getType()),
- C);
+ return getSub(ConstantFP::getZeroValueForNegation(C->getType()),
+ C, HasNUW, HasNSW);
}
-Constant* ConstantExpr::getFNeg(Constant* C) {
+Constant *ConstantExpr::getFNeg(Constant *C) {
assert(C->getType()->isFPOrFPVectorTy() &&
"Cannot FNEG a non-floating-point value!");
- return get(Instruction::FSub,
- ConstantFP::getZeroValueForNegation(C->getType()),
- C);
+ return getFSub(ConstantFP::getZeroValueForNegation(C->getType()), C);
}
-Constant* ConstantExpr::getNot(Constant* C) {
+Constant *ConstantExpr::getNot(Constant *C) {
assert(C->getType()->isIntOrIntVectorTy() &&
"Cannot NOT a nonintegral value!");
return get(Instruction::Xor, C, Constant::getAllOnesValue(C->getType()));
}
-Constant* ConstantExpr::getAdd(Constant* C1, Constant* C2) {
- return get(Instruction::Add, C1, C2);
+Constant *ConstantExpr::getAdd(Constant *C1, Constant *C2,
+ bool HasNUW, bool HasNSW) {
+ unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) |
+ (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0);
+ return get(Instruction::Add, C1, C2, Flags);
}
-Constant* ConstantExpr::getFAdd(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getFAdd(Constant *C1, Constant *C2) {
return get(Instruction::FAdd, C1, C2);
}
-Constant* ConstantExpr::getSub(Constant* C1, Constant* C2) {
- return get(Instruction::Sub, C1, C2);
+Constant *ConstantExpr::getSub(Constant *C1, Constant *C2,
+ bool HasNUW, bool HasNSW) {
+ unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) |
+ (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0);
+ return get(Instruction::Sub, C1, C2, Flags);
}
-Constant* ConstantExpr::getFSub(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getFSub(Constant *C1, Constant *C2) {
return get(Instruction::FSub, C1, C2);
}
-Constant* ConstantExpr::getMul(Constant* C1, Constant* C2) {
- return get(Instruction::Mul, C1, C2);
+Constant *ConstantExpr::getMul(Constant *C1, Constant *C2,
+ bool HasNUW, bool HasNSW) {
+ unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) |
+ (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0);
+ return get(Instruction::Mul, C1, C2, Flags);
}
-Constant* ConstantExpr::getFMul(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getFMul(Constant *C1, Constant *C2) {
return get(Instruction::FMul, C1, C2);
}
-Constant* ConstantExpr::getUDiv(Constant* C1, Constant* C2) {
- return get(Instruction::UDiv, C1, C2);
+Constant *ConstantExpr::getUDiv(Constant *C1, Constant *C2, bool isExact) {
+ return get(Instruction::UDiv, C1, C2,
+ isExact ? PossiblyExactOperator::IsExact : 0);
}
-Constant* ConstantExpr::getSDiv(Constant* C1, Constant* C2) {
- return get(Instruction::SDiv, C1, C2);
+Constant *ConstantExpr::getSDiv(Constant *C1, Constant *C2, bool isExact) {
+ return get(Instruction::SDiv, C1, C2,
+ isExact ? PossiblyExactOperator::IsExact : 0);
}
-Constant* ConstantExpr::getFDiv(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getFDiv(Constant *C1, Constant *C2) {
return get(Instruction::FDiv, C1, C2);
}
-Constant* ConstantExpr::getURem(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getURem(Constant *C1, Constant *C2) {
return get(Instruction::URem, C1, C2);
}
-Constant* ConstantExpr::getSRem(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getSRem(Constant *C1, Constant *C2) {
return get(Instruction::SRem, C1, C2);
}
-Constant* ConstantExpr::getFRem(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getFRem(Constant *C1, Constant *C2) {
return get(Instruction::FRem, C1, C2);
}
-Constant* ConstantExpr::getAnd(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getAnd(Constant *C1, Constant *C2) {
return get(Instruction::And, C1, C2);
}
-Constant* ConstantExpr::getOr(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getOr(Constant *C1, Constant *C2) {
return get(Instruction::Or, C1, C2);
}
-Constant* ConstantExpr::getXor(Constant* C1, Constant* C2) {
+Constant *ConstantExpr::getXor(Constant *C1, Constant *C2) {
return get(Instruction::Xor, C1, C2);
}
-Constant* ConstantExpr::getShl(Constant* C1, Constant* C2) {
- return get(Instruction::Shl, C1, C2);
+Constant *ConstantExpr::getShl(Constant *C1, Constant *C2,
+ bool HasNUW, bool HasNSW) {
+ unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) |
+ (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0);
+ return get(Instruction::Shl, C1, C2, Flags);
}
-Constant* ConstantExpr::getLShr(Constant* C1, Constant* C2) {
- return get(Instruction::LShr, C1, C2);
+Constant *ConstantExpr::getLShr(Constant *C1, Constant *C2, bool isExact) {
+ return get(Instruction::LShr, C1, C2,
+ isExact ? PossiblyExactOperator::IsExact : 0);
}
-Constant* ConstantExpr::getAShr(Constant* C1, Constant* C2) {
- return get(Instruction::AShr, C1, C2);
+Constant *ConstantExpr::getAShr(Constant *C1, Constant *C2, bool isExact) {
+ return get(Instruction::AShr, C1, C2,
+ isExact ? PossiblyExactOperator::IsExact : 0);
+}
+
+/// getBinOpIdentity - Return the identity for the given binary operation,
+/// i.e. a constant C such that X op C = X and C op X = X for every X. It
+/// returns null if the operator doesn't have an identity.
+Constant *ConstantExpr::getBinOpIdentity(unsigned Opcode, Type *Ty) {
+ switch (Opcode) {
+ default:
+ // Doesn't have an identity.
+ return 0;
+
+ case Instruction::Add:
+ case Instruction::Or:
+ case Instruction::Xor:
+ return Constant::getNullValue(Ty);
+
+ case Instruction::Mul:
+ return ConstantInt::get(Ty, 1);
+
+ case Instruction::And:
+ return Constant::getAllOnesValue(Ty);
+ }
+}
+
+/// getBinOpAbsorber - Return the absorbing element for the given binary
+/// operation, i.e. a constant C such that X op C = C and C op X = C for
+/// every X. For example, this returns zero for integer multiplication.
+/// It returns null if the operator doesn't have an absorbing element.
+Constant *ConstantExpr::getBinOpAbsorber(unsigned Opcode, Type *Ty) {
+ switch (Opcode) {
+ default:
+ // Doesn't have an absorber.
+ return 0;
+
+ case Instruction::Or:
+ return Constant::getAllOnesValue(Ty);
+
+ case Instruction::And:
+ case Instruction::Mul:
+ return Constant::getNullValue(Ty);
+ }
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantExpr::destroyConstant() {
- getRawType()->getContext().pImpl->ExprConstants.remove(this);
+ getType()->getContext().pImpl->ExprConstants.remove(this);
destroyConstantImpl();
}
GetElementPtrConstantExpr::
-GetElementPtrConstantExpr(Constant *C, const std::vector<Constant*> &IdxList,
- const Type *DestTy)
+GetElementPtrConstantExpr(Constant *C, ArrayRef<Constant*> IdxList,
+ Type *DestTy)
: ConstantExpr(DestTy, Instruction::GetElementPtr,
OperandTraits<GetElementPtrConstantExpr>::op_end(this)
- (IdxList.size()+1), IdxList.size()+1) {
OperandList[i+1] = IdxList[i];
}
+//===----------------------------------------------------------------------===//
+// ConstantData* implementations
+
+void ConstantDataArray::anchor() {}
+void ConstantDataVector::anchor() {}
+
+/// getElementType - Return the element type of the array/vector.
+Type *ConstantDataSequential::getElementType() const {
+ 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
+/// stored densely in memory, not with things like i42 or x86_f80.
+bool ConstantDataSequential::isElementTypeCompatible(const Type *Ty) {
+ if (Ty->isFloatTy() || Ty->isDoubleTy()) return true;
+ if (const IntegerType *IT = dyn_cast<IntegerType>(Ty)) {
+ switch (IT->getBitWidth()) {
+ case 8:
+ case 16:
+ case 32:
+ case 64:
+ return true;
+ default: break;
+ }
+ }
+ 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 getType()->getVectorNumElements();
+}
+
+
+/// 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 < getNumElements() && "Invalid Elt");
+ return DataElements+Elt*getElementByteSize();
+}
+
+
+/// isAllZeros - return true if the array is empty or all zeros.
+static bool isAllZeros(StringRef Arr) {
+ for (StringRef::iterator I = Arr.begin(), E = Arr.end(); I != E; ++I)
+ if (*I != 0)
+ return false;
+ return true;
+}
+
+/// getImpl - This is the underlying implementation of all of the
+/// ConstantDataSequential::get methods. They all thunk down to here, providing
+/// the correct element type. We take the bytes in as a StringRef because
+/// we *want* an underlying "char*" to avoid TBAA type punning violations.
+Constant *ConstantDataSequential::getImpl(StringRef Elements, Type *Ty) {
+ assert(isElementTypeCompatible(Ty->getSequentialElementType()));
+ // 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);
+
+ // Do a lookup to see if we have already formed one of these.
+ StringMap<ConstantDataSequential*>::MapEntryTy &Slot =
+ Ty->getContext().pImpl->CDSConstants.GetOrCreateValue(Elements);
+
+ // The bucket can point to a linked list of different CDS's that have the same
+ // body but different types. For example, 0,0,0,1 could be a 4 element array
+ // of i8, or a 1-element array of i32. They'll both end up in the same
+ /// StringMap bucket, linked up by their Next pointers. Walk the list.
+ ConstantDataSequential **Entry = &Slot.getValue();
+ for (ConstantDataSequential *Node = *Entry; Node != 0;
+ Entry = &Node->Next, Node = *Entry)
+ if (Node->getType() == Ty)
+ return Node;
+
+ // Okay, we didn't get a hit. Create a node of the right class, link it in,
+ // and return it.
+ if (isa<ArrayType>(Ty))
+ return *Entry = new ConstantDataArray(Ty, Slot.getKeyData());
+
+ assert(isa<VectorType>(Ty));
+ return *Entry = new ConstantDataVector(Ty, Slot.getKeyData());
+}
+
+void ConstantDataSequential::destroyConstant() {
+ // Remove the constant from the StringMap.
+ StringMap<ConstantDataSequential*> &CDSConstants =
+ getType()->getContext().pImpl->CDSConstants;
+
+ StringMap<ConstantDataSequential*>::iterator Slot =
+ CDSConstants.find(getRawDataValues());
+
+ assert(Slot != CDSConstants.end() && "CDS not found in uniquing table");
+
+ ConstantDataSequential **Entry = &Slot->getValue();
+
+ // Remove the entry from the hash table.
+ if ((*Entry)->Next == 0) {
+ // If there is only one value in the bucket (common case) it must be this
+ // entry, and removing the entry should remove the bucket completely.
+ assert((*Entry) == this && "Hash mismatch in ConstantDataSequential");
+ getContext().pImpl->CDSConstants.erase(Slot);
+ } else {
+ // Otherwise, there are multiple entries linked off the bucket, unlink the
+ // node we care about but keep the bucket around.
+ for (ConstantDataSequential *Node = *Entry; ;
+ Entry = &Node->Next, Node = *Entry) {
+ assert(Node && "Didn't find entry in its uniquing hash table!");
+ // If we found our entry, unlink it from the list and we're done.
+ if (Node == this) {
+ *Entry = Node->Next;
+ break;
+ }
+ }
+ }
+
+ // If we were part of a list, make sure that we don't delete the list that is
+ // still owned by the uniquing map.
+ Next = 0;
+
+ // Finally, actually delete it.
+ destroyConstantImpl();
+}
+
+/// 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(LLVMContext &Context, ArrayRef<uint8_t> Elts) {
+ Type *Ty = ArrayType::get(Type::getInt8Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*1), Ty);
+}
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint16_t> Elts){
+ Type *Ty = ArrayType::get(Type::getInt16Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*2), Ty);
+}
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint32_t> Elts){
+ Type *Ty = ArrayType::get(Type::getInt32Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*4), Ty);
+}
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<uint64_t> Elts){
+ Type *Ty = ArrayType::get(Type::getInt64Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*8), Ty);
+}
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<float> Elts) {
+ Type *Ty = ArrayType::get(Type::getFloatTy(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*4), Ty);
+}
+Constant *ConstantDataArray::get(LLVMContext &Context, ArrayRef<double> Elts) {
+ Type *Ty = ArrayType::get(Type::getDoubleTy(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(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) {
+ const uint8_t *Data = reinterpret_cast<const uint8_t *>(Str.data());
+ return get(Context, ArrayRef<uint8_t>(const_cast<uint8_t *>(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(LLVMContext &Context, ArrayRef<uint8_t> Elts){
+ Type *Ty = VectorType::get(Type::getInt8Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*1), Ty);
+}
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint16_t> Elts){
+ Type *Ty = VectorType::get(Type::getInt16Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*2), Ty);
+}
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint32_t> Elts){
+ Type *Ty = VectorType::get(Type::getInt32Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*4), Ty);
+}
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<uint64_t> Elts){
+ Type *Ty = VectorType::get(Type::getInt64Ty(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*8), Ty);
+}
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<float> Elts) {
+ Type *Ty = VectorType::get(Type::getFloatTy(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(Data), Elts.size()*4), Ty);
+}
+Constant *ConstantDataVector::get(LLVMContext &Context, ArrayRef<double> Elts) {
+ Type *Ty = VectorType::get(Type::getDoubleTy(Context), Elts.size());
+ const char *Data = reinterpret_cast<const char *>(Elts.data());
+ return getImpl(StringRef(const_cast<char *>(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);
+ }
+
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(V)) {
+ if (CFP->getType()->isFloatTy()) {
+ SmallVector<float, 16> Elts(NumElts, CFP->getValueAPF().convertToFloat());
+ return get(V->getContext(), Elts);
+ }
+ if (CFP->getType()->isDoubleTy()) {
+ SmallVector<double, 16> Elts(NumElts,
+ CFP->getValueAPF().convertToDouble());
+ return get(V->getContext(), Elts);
+ }
+ }
+ return ConstantVector::getSplat(NumElts, V);
+}
+
+
+/// 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 {
+ assert(isa<IntegerType>(getElementType()) &&
+ "Accessor can only be used when element is an integer");
+ const char *EltPtr = getElementPointer(Elt);
+
+ // The data is stored in host byte order, make sure to cast back to the right
+ // type to load with the right endianness.
+ switch (getElementType()->getIntegerBitWidth()) {
+ default: llvm_unreachable("Invalid bitwidth for CDS");
+ case 8:
+ return *const_cast<uint8_t *>(reinterpret_cast<const uint8_t *>(EltPtr));
+ case 16:
+ return *const_cast<uint16_t *>(reinterpret_cast<const uint16_t *>(EltPtr));
+ case 32:
+ return *const_cast<uint32_t *>(reinterpret_cast<const uint32_t *>(EltPtr));
+ case 64:
+ return *const_cast<uint64_t *>(reinterpret_cast<const uint64_t *>(EltPtr));
+ }
+}
+
+/// getElementAsAPFloat - If this is a sequential container of floating point
+/// type, return the specified element as an APFloat.
+APFloat ConstantDataSequential::getElementAsAPFloat(unsigned Elt) const {
+ const char *EltPtr = getElementPointer(Elt);
+
+ switch (getElementType()->getTypeID()) {
+ default:
+ llvm_unreachable("Accessor can only be used when element is float/double!");
+ case Type::FloatTyID: {
+ const float *FloatPrt = reinterpret_cast<const float *>(EltPtr);
+ return APFloat(*const_cast<float *>(FloatPrt));
+ }
+ case Type::DoubleTyID: {
+ const double *DoublePtr = reinterpret_cast<const double *>(EltPtr);
+ return APFloat(*const_cast<double *>(DoublePtr));
+ }
+ }
+}
+
+/// getElementAsFloat - If this is an sequential container of floats, return
+/// the specified element as a float.
+float ConstantDataSequential::getElementAsFloat(unsigned Elt) const {
+ assert(getElementType()->isFloatTy() &&
+ "Accessor can only be used when element is a 'float'");
+ const float *EltPtr = reinterpret_cast<const float *>(getElementPointer(Elt));
+ return *const_cast<float *>(EltPtr);
+}
+
+/// getElementAsDouble - If this is an sequential container of doubles, return
+/// the specified element as a float.
+double ConstantDataSequential::getElementAsDouble(unsigned Elt) const {
+ assert(getElementType()->isDoubleTy() &&
+ "Accessor can only be used when element is a 'float'");
+ const double *EltPtr =
+ reinterpret_cast<const double *>(getElementPointer(Elt));
+ return *const_cast<double *>(EltPtr);
+}
+
+/// getElementAsConstant - Return a Constant for a specified index's element.
+/// Note that this has to compute a new constant to return, so it isn't as
+/// efficient as getElementAsInteger/Float/Double.
+Constant *ConstantDataSequential::getElementAsConstant(unsigned Elt) const {
+ if (getElementType()->isFloatTy() || getElementType()->isDoubleTy())
+ return ConstantFP::get(getContext(), getElementAsAPFloat(Elt));
+
+ 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;
+}
+
+/// getSplatValue - If this is a splat constant, meaning that all of the
+/// elements have the same value, return that value. Otherwise return NULL.
+Constant *ConstantDataVector::getSplatValue() const {
+ const char *Base = getRawDataValues().data();
+
+ // Compare elements 1+ to the 0'th element.
+ unsigned EltSize = getElementByteSize();
+ for (unsigned i = 1, e = getNumElements(); i != e; ++i)
+ if (memcmp(Base, Base+i*EltSize, EltSize))
+ return 0;
+
+ // If they're all the same, return the 0th one as a representative.
+ return getElementAsConstant(0);
+}
//===----------------------------------------------------------------------===//
// replaceUsesOfWithOnConstant implementations
assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!");
Constant *ToC = cast<Constant>(To);
- LLVMContextImpl *pImpl = getRawType()->getContext().pImpl;
-
- std::pair<LLVMContextImpl::ArrayConstantsTy::MapKey, ConstantArray*> Lookup;
- Lookup.first.first = cast<ArrayType>(getRawType());
- Lookup.second = this;
+ LLVMContextImpl *pImpl = getType()->getContext().pImpl;
- std::vector<Constant*> &Values = Lookup.first.second;
+ SmallVector<Constant*, 8> Values;
+ LLVMContextImpl::ArrayConstantsTy::LookupKey Lookup;
+ Lookup.first = cast<ArrayType>(getType());
Values.reserve(getNumOperands()); // Build replacement array.
- // Fill values with the modified operands of the constant array. Also,
+ // Fill values with the modified operands of the constant array. Also,
// compute whether this turns into an all-zeros array.
- bool isAllZeros = false;
unsigned NumUpdated = 0;
- if (!ToC->isNullValue()) {
- for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) {
- Constant *Val = cast<Constant>(O->get());
- if (Val == From) {
- Val = ToC;
- ++NumUpdated;
- }
- Values.push_back(Val);
- }
- } else {
- isAllZeros = true;
- for (Use *O = OperandList, *E = OperandList+getNumOperands();O != E; ++O) {
- Constant *Val = cast<Constant>(O->get());
- if (Val == From) {
- Val = ToC;
- ++NumUpdated;
- }
- Values.push_back(Val);
- if (isAllZeros) isAllZeros = Val->isNullValue();
+
+ // Keep track of whether all the values in the array are "ToC".
+ bool AllSame = true;
+ for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) {
+ Constant *Val = cast<Constant>(O->get());
+ if (Val == From) {
+ Val = ToC;
+ ++NumUpdated;
}
+ Values.push_back(Val);
+ AllSame &= Val == ToC;
}
-
+
Constant *Replacement = 0;
- if (isAllZeros) {
- Replacement = ConstantAggregateZero::get(getRawType());
+ if (AllSame && ToC->isNullValue()) {
+ Replacement = ConstantAggregateZero::get(getType());
+ } else if (AllSame && isa<UndefValue>(ToC)) {
+ Replacement = UndefValue::get(getType());
} else {
// Check to see if we have this array type already.
- bool Exists;
+ Lookup.second = makeArrayRef(Values);
LLVMContextImpl::ArrayConstantsTy::MapTy::iterator I =
- pImpl->ArrayConstants.InsertOrGetItem(Lookup, Exists);
-
- if (Exists) {
- Replacement = I->second;
+ pImpl->ArrayConstants.find(Lookup);
+
+ if (I != pImpl->ArrayConstants.map_end()) {
+ Replacement = I->first;
} else {
// Okay, the new shape doesn't exist in the system yet. Instead of
// creating a new constant array, inserting it, replaceallusesof'ing the
// old with the new, then deleting the old... just update the current one
// in place!
- pImpl->ArrayConstants.MoveConstantToNewSlot(this, I);
-
+ pImpl->ArrayConstants.remove(this);
+
// Update to the new value. Optimize for the case when we have a single
// operand that we're changing, but handle bulk updates efficiently.
if (NumUpdated == 1) {
if (getOperand(i) == From)
setOperand(i, ToC);
}
+ pImpl->ArrayConstants.insert(this);
return;
}
}
-
+
// Otherwise, I do need to replace this with an existing value.
assert(Replacement != this && "I didn't contain From!");
-
+
// Everyone using this now uses the replacement.
- uncheckedReplaceAllUsesWith(Replacement);
-
+ replaceAllUsesWith(Replacement);
+
// Delete the old constant!
destroyConstant();
}
unsigned OperandToUpdate = U-OperandList;
assert(getOperand(OperandToUpdate) == From && "ReplaceAllUsesWith broken!");
- std::pair<LLVMContextImpl::StructConstantsTy::MapKey, ConstantStruct*> Lookup;
- Lookup.first.first = cast<StructType>(getRawType());
- Lookup.second = this;
- std::vector<Constant*> &Values = Lookup.first.second;
+ SmallVector<Constant*, 8> Values;
+ LLVMContextImpl::StructConstantsTy::LookupKey Lookup;
+ Lookup.first = cast<StructType>(getType());
Values.reserve(getNumOperands()); // Build replacement struct.
-
-
- // Fill values with the modified operands of the constant struct. Also,
+
+ // Fill values with the modified operands of the constant struct. Also,
// compute whether this turns into an all-zeros struct.
bool isAllZeros = false;
- if (!ToC->isNullValue()) {
- for (Use *O = OperandList, *E = OperandList + getNumOperands(); O != E; ++O)
- Values.push_back(cast<Constant>(O->get()));
- } else {
+ bool isAllUndef = false;
+ if (ToC->isNullValue()) {
isAllZeros = true;
for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) {
Constant *Val = cast<Constant>(O->get());
Values.push_back(Val);
if (isAllZeros) isAllZeros = Val->isNullValue();
}
+ } else if (isa<UndefValue>(ToC)) {
+ isAllUndef = true;
+ for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) {
+ Constant *Val = cast<Constant>(O->get());
+ Values.push_back(Val);
+ if (isAllUndef) isAllUndef = isa<UndefValue>(Val);
+ }
+ } else {
+ for (Use *O = OperandList, *E = OperandList + getNumOperands(); O != E; ++O)
+ Values.push_back(cast<Constant>(O->get()));
}
Values[OperandToUpdate] = ToC;
-
- LLVMContextImpl *pImpl = getRawType()->getContext().pImpl;
-
+
+ LLVMContextImpl *pImpl = getContext().pImpl;
+
Constant *Replacement = 0;
if (isAllZeros) {
- Replacement = ConstantAggregateZero::get(getRawType());
+ Replacement = ConstantAggregateZero::get(getType());
+ } else if (isAllUndef) {
+ Replacement = UndefValue::get(getType());
} else {
// Check to see if we have this struct type already.
- bool Exists;
+ Lookup.second = makeArrayRef(Values);
LLVMContextImpl::StructConstantsTy::MapTy::iterator I =
- pImpl->StructConstants.InsertOrGetItem(Lookup, Exists);
-
- if (Exists) {
- Replacement = I->second;
+ pImpl->StructConstants.find(Lookup);
+
+ if (I != pImpl->StructConstants.map_end()) {
+ Replacement = I->first;
} else {
// Okay, the new shape doesn't exist in the system yet. Instead of
// creating a new constant struct, inserting it, replaceallusesof'ing the
// old with the new, then deleting the old... just update the current one
// in place!
- pImpl->StructConstants.MoveConstantToNewSlot(this, I);
-
+ pImpl->StructConstants.remove(this);
+
// Update to the new value.
setOperand(OperandToUpdate, ToC);
+ pImpl->StructConstants.insert(this);
return;
}
}
-
+
assert(Replacement != this && "I didn't contain From!");
-
+
// Everyone using this now uses the replacement.
- uncheckedReplaceAllUsesWith(Replacement);
-
+ replaceAllUsesWith(Replacement);
+
// Delete the old constant!
destroyConstant();
}
void ConstantVector::replaceUsesOfWithOnConstant(Value *From, Value *To,
Use *U) {
assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!");
-
- std::vector<Constant*> Values;
+
+ SmallVector<Constant*, 8> Values;
Values.reserve(getNumOperands()); // Build replacement array...
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
Constant *Val = getOperand(i);
if (Val == From) Val = cast<Constant>(To);
Values.push_back(Val);
}
-
- Constant *Replacement = get(cast<VectorType>(getRawType()), Values);
+
+ Constant *Replacement = get(Values);
assert(Replacement != this && "I didn't contain From!");
-
+
// Everyone using this now uses the replacement.
- uncheckedReplaceAllUsesWith(Replacement);
-
+ replaceAllUsesWith(Replacement);
+
// Delete the old constant!
destroyConstant();
}
Use *U) {
assert(isa<Constant>(ToV) && "Cannot make Constant refer to non-constant!");
Constant *To = cast<Constant>(ToV);
-
- Constant *Replacement = 0;
- if (getOpcode() == Instruction::GetElementPtr) {
- SmallVector<Constant*, 8> Indices;
- Constant *Pointer = getOperand(0);
- Indices.reserve(getNumOperands()-1);
- if (Pointer == From) Pointer = To;
-
- for (unsigned i = 1, e = getNumOperands(); i != e; ++i) {
- Constant *Val = getOperand(i);
- if (Val == From) Val = To;
- Indices.push_back(Val);
- }
- Replacement = ConstantExpr::getGetElementPtr(Pointer,
- &Indices[0], Indices.size());
- } else if (getOpcode() == Instruction::ExtractValue) {
- Constant *Agg = getOperand(0);
- if (Agg == From) Agg = To;
-
- const SmallVector<unsigned, 4> &Indices = getIndices();
- Replacement = ConstantExpr::getExtractValue(Agg,
- &Indices[0], Indices.size());
- } else if (getOpcode() == Instruction::InsertValue) {
- Constant *Agg = getOperand(0);
- Constant *Val = getOperand(1);
- if (Agg == From) Agg = To;
- if (Val == From) Val = To;
-
- const SmallVector<unsigned, 4> &Indices = getIndices();
- Replacement = ConstantExpr::getInsertValue(Agg, Val,
- &Indices[0], Indices.size());
- } else if (isCast()) {
- assert(getOperand(0) == From && "Cast only has one use!");
- Replacement = ConstantExpr::getCast(getOpcode(), To, getRawType());
- } else if (getOpcode() == Instruction::Select) {
- Constant *C1 = getOperand(0);
- Constant *C2 = getOperand(1);
- Constant *C3 = getOperand(2);
- if (C1 == From) C1 = To;
- if (C2 == From) C2 = To;
- if (C3 == From) C3 = To;
- Replacement = ConstantExpr::getSelect(C1, C2, C3);
- } else if (getOpcode() == Instruction::ExtractElement) {
- Constant *C1 = getOperand(0);
- Constant *C2 = getOperand(1);
- if (C1 == From) C1 = To;
- if (C2 == From) C2 = To;
- Replacement = ConstantExpr::getExtractElement(C1, C2);
- } else if (getOpcode() == Instruction::InsertElement) {
- Constant *C1 = getOperand(0);
- Constant *C2 = getOperand(1);
- Constant *C3 = getOperand(1);
- if (C1 == From) C1 = To;
- if (C2 == From) C2 = To;
- if (C3 == From) C3 = To;
- Replacement = ConstantExpr::getInsertElement(C1, C2, C3);
- } else if (getOpcode() == Instruction::ShuffleVector) {
- Constant *C1 = getOperand(0);
- Constant *C2 = getOperand(1);
- Constant *C3 = getOperand(2);
- if (C1 == From) C1 = To;
- if (C2 == From) C2 = To;
- if (C3 == From) C3 = To;
- Replacement = ConstantExpr::getShuffleVector(C1, C2, C3);
- } else if (isCompare()) {
- Constant *C1 = getOperand(0);
- Constant *C2 = getOperand(1);
- if (C1 == From) C1 = To;
- if (C2 == From) C2 = To;
- if (getOpcode() == Instruction::ICmp)
- Replacement = ConstantExpr::getICmp(getPredicate(), C1, C2);
- else {
- assert(getOpcode() == Instruction::FCmp);
- Replacement = ConstantExpr::getFCmp(getPredicate(), C1, C2);
- }
- } else if (getNumOperands() == 2) {
- Constant *C1 = getOperand(0);
- Constant *C2 = getOperand(1);
- if (C1 == From) C1 = To;
- if (C2 == From) C2 = To;
- Replacement = ConstantExpr::get(getOpcode(), C1, C2, SubclassOptionalData);
- } else {
- llvm_unreachable("Unknown ConstantExpr type!");
- return;
+
+ SmallVector<Constant*, 8> NewOps;
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
+ Constant *Op = getOperand(i);
+ NewOps.push_back(Op == From ? To : Op);
}
-
+
+ Constant *Replacement = getWithOperands(NewOps);
assert(Replacement != this && "I didn't contain From!");
-
+
// Everyone using this now uses the replacement.
- uncheckedReplaceAllUsesWith(Replacement);
-
+ replaceAllUsesWith(Replacement);
+
// Delete the old constant!
destroyConstant();
}
projects / oota-llvm.git / blobdiff