private:
bool ShouldChangeType(const Type *From, const Type *To) const;
Value *dyn_castNegVal(Value *V) const;
+ Value *dyn_castFNegVal(Value *V) const;
const Type *FindElementAtOffset(const Type *Ty, int64_t Offset,
SmallVectorImpl<Value*> &NewIndices);
Instruction *FoldOpIntoSelect(Instruction &Op, SelectInst *SI);