/// them in the KnownZero/KnownOne bit sets.
///
/// This function is defined on values with integer type, values with pointer
- /// type (but only if TD is non-null), and vectors of integers. In the case
+ /// type, and vectors of integers. In the case
/// where V is a vector, the known zero and known one values are the
/// same width as the vector element, and the bit is set only if it is true
/// for all of the elements in the vector.
void computeKnownBits(Value *V, APInt &KnownZero, APInt &KnownOne,
- const DataLayout *TD = nullptr, unsigned Depth = 0,
+ const DataLayout &DL, unsigned Depth = 0,
AssumptionCache *AC = nullptr,
const Instruction *CxtI = nullptr,
const DominatorTree *DT = nullptr);
/// ComputeSignBit - Determine whether the sign bit is known to be zero or
/// one. Convenience wrapper around computeKnownBits.
void ComputeSignBit(Value *V, bool &KnownZero, bool &KnownOne,
- const DataLayout *TD = nullptr, unsigned Depth = 0,
+ const DataLayout &DL, unsigned Depth = 0,
AssumptionCache *AC = nullptr,
const Instruction *CxtI = nullptr,
const DominatorTree *DT = nullptr);
/// element is known to be a power of two when defined. Supports values with
/// integer or pointer type and vectors of integers. If 'OrZero' is set then
/// returns true if the given value is either a power of two or zero.
- bool isKnownToBeAPowerOfTwo(Value *V, bool OrZero = false, unsigned Depth = 0,
+ bool isKnownToBeAPowerOfTwo(Value *V, const DataLayout &DL,
+ bool OrZero = false, unsigned Depth = 0,
AssumptionCache *AC = nullptr,
const Instruction *CxtI = nullptr,
const DominatorTree *DT = nullptr);
/// when defined. For vectors return true if every element is known to be
/// non-zero when defined. Supports values with integer or pointer type and
/// vectors of integers.
- bool isKnownNonZero(Value *V, const DataLayout *TD = nullptr,
- unsigned Depth = 0, AssumptionCache *AC = nullptr,
+ bool isKnownNonZero(Value *V, const DataLayout &DL, unsigned Depth = 0,
+ AssumptionCache *AC = nullptr,
const Instruction *CxtI = nullptr,
const DominatorTree *DT = nullptr);
/// zero for bits that V cannot have.
///
/// This function is defined on values with integer type, values with pointer
- /// type (but only if TD is non-null), and vectors of integers. In the case
+ /// type, and vectors of integers. In the case
/// where V is a vector, the mask, known zero, and known one values are the
/// same width as the vector element, and the bit is set only if it is true
/// for all of the elements in the vector.
- bool MaskedValueIsZero(Value *V, const APInt &Mask,
- const DataLayout *TD = nullptr, unsigned Depth = 0,
- AssumptionCache *AC = nullptr,
+ bool MaskedValueIsZero(Value *V, const APInt &Mask, const DataLayout &DL,
+ unsigned Depth = 0, AssumptionCache *AC = nullptr,
const Instruction *CxtI = nullptr,
const DominatorTree *DT = nullptr);
///
/// 'Op' must have a scalar integer type.
///
- unsigned ComputeNumSignBits(Value *Op, const DataLayout *TD = nullptr,
+ unsigned ComputeNumSignBits(Value *Op, const DataLayout &DL,
unsigned Depth = 0, AssumptionCache *AC = nullptr,
const Instruction *CxtI = nullptr,
const DominatorTree *DT = nullptr);
/// it can be expressed as a base pointer plus a constant offset. Return the
/// base and offset to the caller.
Value *GetPointerBaseWithConstantOffset(Value *Ptr, int64_t &Offset,
- const DataLayout *TD);
+ const DataLayout &DL);
static inline const Value *
GetPointerBaseWithConstantOffset(const Value *Ptr, int64_t &Offset,
- const DataLayout *TD) {
- return GetPointerBaseWithConstantOffset(const_cast<Value*>(Ptr), Offset,TD);
+ const DataLayout &DL) {
+ return GetPointerBaseWithConstantOffset(const_cast<Value *>(Ptr), Offset,
+ DL);
}
/// getConstantStringInfo - This function computes the length of a
/// being addressed. Note that the returned value has pointer type if the
/// specified value does. If the MaxLookup value is non-zero, it limits the
/// number of instructions to be stripped off.
- Value *GetUnderlyingObject(Value *V, const DataLayout *TD = nullptr,
+ Value *GetUnderlyingObject(Value *V, const DataLayout &DL,
unsigned MaxLookup = 6);
- static inline const Value *
- GetUnderlyingObject(const Value *V, const DataLayout *TD = nullptr,
- unsigned MaxLookup = 6) {
- return GetUnderlyingObject(const_cast<Value *>(V), TD, MaxLookup);
+ static inline const Value *GetUnderlyingObject(const Value *V,
+ const DataLayout &DL,
+ unsigned MaxLookup = 6) {
+ return GetUnderlyingObject(const_cast<Value *>(V), DL, MaxLookup);
}
/// GetUnderlyingObjects - This method is similar to GetUnderlyingObject
/// except that it can look through phi and select instructions and return
/// multiple objects.
- void GetUnderlyingObjects(Value *V,
- SmallVectorImpl<Value *> &Objects,
- const DataLayout *TD = nullptr,
- unsigned MaxLookup = 6);
+ void GetUnderlyingObjects(Value *V, SmallVectorImpl<Value *> &Objects,
+ const DataLayout &DL, unsigned MaxLookup = 6);
/// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
/// are lifetime markers.
/// the correct dominance relationships for the operands and users hold.
/// However, this method can return true for instructions that read memory;
/// for such instructions, moving them may change the resulting value.
- bool isSafeToSpeculativelyExecute(const Value *V,
- const DataLayout *TD = nullptr);
+ bool isSafeToSpeculativelyExecute(const Value *V);
/// isKnownNonNull - Return true if this pointer couldn't possibly be null by
/// its definition. This returns true for allocas, non-extern-weak globals
/// assume intrinsic, I, at the point in the control-flow identified by the
/// context instruction, CxtI.
bool isValidAssumeForContext(const Instruction *I, const Instruction *CxtI,
- const DataLayout *DL = nullptr,
const DominatorTree *DT = nullptr);
enum class OverflowResult { AlwaysOverflows, MayOverflow, NeverOverflows };
OverflowResult computeOverflowForUnsignedMul(Value *LHS, Value *RHS,
- const DataLayout *DL,
+ const DataLayout &DL,
AssumptionCache *AC,
const Instruction *CxtI,
const DominatorTree *DT);
OverflowResult computeOverflowForUnsignedAdd(Value *LHS, Value *RHS,
- const DataLayout *DL,
+ const DataLayout &DL,
AssumptionCache *AC,
const Instruction *CxtI,
const DominatorTree *DT);
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