};
/// OverflowingBinaryOperator - Utility class for integer arithmetic operators
-/// which may exhibit overflow - Add, Sub, and Mul.
+/// which may exhibit overflow - Add, Sub, and Mul. It does not include SDiv,
+/// despite that operator having the potential for overflow.
///
class OverflowingBinaryOperator : public Operator {
public:
}
};
-/// UDivOperator - An Operator with opcode Instruction::UDiv.
+/// SDivOperator - An Operator with opcode Instruction::SDiv.
///
-class UDivOperator : public Operator {
+class SDivOperator : public Operator {
public:
/// isExact - Test whether this division is known to be exact, with
/// zero remainder.
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const UDivOperator *) { return true; }
+ static inline bool classof(const SDivOperator *) { return true; }
static inline bool classof(const ConstantExpr *CE) {
- return CE->getOpcode() == Instruction::UDiv;
+ return CE->getOpcode() == Instruction::SDiv;
}
static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::UDiv;
+ return I->getOpcode() == Instruction::SDiv;
}
static inline bool classof(const Value *V) {
return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
}
};
+class GEPOperator : public Operator {
+public:
+ inline op_iterator idx_begin() { return op_begin()+1; }
+ inline const_op_iterator idx_begin() const { return op_begin()+1; }
+ inline op_iterator idx_end() { return op_end(); }
+ inline const_op_iterator idx_end() const { return op_end(); }
+
+ Value *getPointerOperand() {
+ return getOperand(0);
+ }
+ const Value *getPointerOperand() const {
+ return getOperand(0);
+ }
+ static unsigned getPointerOperandIndex() {
+ return 0U; // get index for modifying correct operand
+ }
+
+ /// getPointerOperandType - Method to return the pointer operand as a
+ /// PointerType.
+ const PointerType *getPointerOperandType() const {
+ return reinterpret_cast<const PointerType*>(getPointerOperand()->getType());
+ }
+
+ unsigned getNumIndices() const { // Note: always non-negative
+ return getNumOperands() - 1;
+ }
+
+ bool hasIndices() const {
+ return getNumOperands() > 1;
+ }
+
+ /// hasAllZeroIndices - Return true if all of the indices of this GEP are
+ /// zeros. If so, the result pointer and the first operand have the same
+ /// value, just potentially different types.
+ bool hasAllZeroIndices() const {
+ for (const_op_iterator I = idx_begin(), E = idx_end(); I != E; ++I) {
+ if (Constant *C = dyn_cast<Constant>(I))
+ if (C->isNullValue())
+ continue;
+ return false;
+ }
+ return true;
+ }
+
+ // Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const GEPOperator *) { return true; }
+ static inline bool classof(const GetElementPtrInst *) { return true; }
+ static inline bool classof(const ConstantExpr *CE) {
+ return CE->getOpcode() == Instruction::GetElementPtr;
+ }
+ static inline bool classof(const Instruction *I) {
+ return I->getOpcode() == Instruction::GetElementPtr;
+ }
+ static inline bool classof(const Value *V) {
+ return isa<GetElementPtrInst>(V) ||
+ (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
+ }
+};
+
} // End llvm namespace
#endif