#ifndef LLVM_OPERATOR_H
#define LLVM_OPERATOR_H
-#include "llvm/Instruction.h"
#include "llvm/Constants.h"
+#include "llvm/Instruction.h"
+#include "llvm/Type.h"
namespace llvm {
/// hasNoSignedWrap - Test whether this operation is known to never
/// undergo signed overflow, aka the nsw property.
bool hasNoSignedWrap() const {
- return static_cast<bool>(SubclassOptionalData & NoSignedWrap);
+ return (SubclassOptionalData & NoSignedWrap) != 0;
}
static inline bool classof(const OverflowingBinaryOperator *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Add ||
I->getOpcode() == Instruction::Sub ||
- I->getOpcode() == Instruction::Mul;
+ I->getOpcode() == Instruction::Mul ||
+ I->getOpcode() == Instruction::Shl;
}
static inline bool classof(const ConstantExpr *CE) {
return CE->getOpcode() == Instruction::Add ||
CE->getOpcode() == Instruction::Sub ||
- CE->getOpcode() == Instruction::Mul;
+ CE->getOpcode() == Instruction::Mul ||
+ CE->getOpcode() == Instruction::Shl;
}
static inline bool classof(const Value *V) {
return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
}
};
-/// AddOperator - Utility class for integer addition operators.
-///
-class AddOperator : public OverflowingBinaryOperator {
- ~AddOperator(); // do not implement
+/// PossiblyExactOperator - A udiv or sdiv instruction, which can be marked as
+/// "exact", indicating that no bits are destroyed.
+class PossiblyExactOperator : public Operator {
public:
- static inline bool classof(const AddOperator *) { return true; }
- static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::Add;
+ enum {
+ IsExact = (1 << 0)
+ };
+
+private:
+ ~PossiblyExactOperator(); // do not implement
+
+ friend class BinaryOperator;
+ friend class ConstantExpr;
+ void setIsExact(bool B) {
+ SubclassOptionalData = (SubclassOptionalData & ~IsExact) | (B * IsExact);
+ }
+
+public:
+ /// isExact - Test whether this division is known to be exact, with
+ /// zero remainder.
+ bool isExact() const {
+ return SubclassOptionalData & IsExact;
+ }
+
+ static bool isPossiblyExactOpcode(unsigned OpC) {
+ return OpC == Instruction::SDiv ||
+ OpC == Instruction::UDiv ||
+ OpC == Instruction::AShr ||
+ OpC == Instruction::LShr;
}
static inline bool classof(const ConstantExpr *CE) {
- return CE->getOpcode() == Instruction::Add;
+ return isPossiblyExactOpcode(CE->getOpcode());
+ }
+ static inline bool classof(const Instruction *I) {
+ return isPossiblyExactOpcode(I->getOpcode());
}
static inline bool classof(const Value *V) {
return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
}
};
-/// SubOperator - Utility class for integer subtraction operators.
-///
-class SubOperator : public OverflowingBinaryOperator {
- ~SubOperator(); // do not implement
+/// FPMathOperator - Utility class for floating point operations which can have
+/// information about relaxed accuracy requirements attached to them.
+class FPMathOperator : public Operator {
+private:
+ ~FPMathOperator(); // do not implement
+
public:
- static inline bool classof(const SubOperator *) { return true; }
+
+ /// \brief Get the maximum error permitted by this operation in ULPs. An
+ /// accuracy of 0.0 means that the operation should be performed with the
+ /// default precision.
+ float getFPAccuracy() const;
+
+ static inline bool classof(const FPMathOperator *) { return true; }
static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::Sub;
- }
- static inline bool classof(const ConstantExpr *CE) {
- return CE->getOpcode() == Instruction::Sub;
+ return I->getType()->isFPOrFPVectorTy();
}
static inline bool classof(const Value *V) {
- return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
- (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
+ return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
-/// MulOperator - Utility class for integer multiplication operators.
-///
-class MulOperator : public OverflowingBinaryOperator {
- ~MulOperator(); // do not implement
+
+/// ConcreteOperator - A helper template for defining operators for individual
+/// opcodes.
+template<typename SuperClass, unsigned Opc>
+class ConcreteOperator : public SuperClass {
+ ~ConcreteOperator(); // DO NOT IMPLEMENT
public:
- static inline bool classof(const MulOperator *) { return true; }
+ static inline bool classof(const ConcreteOperator<SuperClass, Opc> *) {
+ return true;
+ }
static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::Mul;
+ return I->getOpcode() == Opc;
}
static inline bool classof(const ConstantExpr *CE) {
- return CE->getOpcode() == Instruction::Mul;
+ return CE->getOpcode() == Opc;
}
static inline bool classof(const Value *V) {
return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
}
};
-/// SDivOperator - An Operator with opcode Instruction::SDiv.
-///
-class SDivOperator : public Operator {
-public:
- enum {
- IsExact = (1 << 0)
- };
-
-private:
- ~SDivOperator(); // do not implement
-
- friend class BinaryOperator;
- friend class ConstantExpr;
- void setIsExact(bool B) {
- SubclassOptionalData = (SubclassOptionalData & ~IsExact) | (B * IsExact);
- }
-
-public:
- /// isExact - Test whether this division is known to be exact, with
- /// zero remainder.
- bool isExact() const {
- return SubclassOptionalData & IsExact;
- }
+class AddOperator
+ : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Add> {
+ ~AddOperator(); // DO NOT IMPLEMENT
+};
+class SubOperator
+ : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Sub> {
+ ~SubOperator(); // DO NOT IMPLEMENT
+};
+class MulOperator
+ : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Mul> {
+ ~MulOperator(); // DO NOT IMPLEMENT
+};
+class ShlOperator
+ : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Shl> {
+ ~ShlOperator(); // DO NOT IMPLEMENT
+};
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const SDivOperator *) { return true; }
- static inline bool classof(const ConstantExpr *CE) {
- return CE->getOpcode() == Instruction::SDiv;
- }
- static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::SDiv;
- }
- static inline bool classof(const Value *V) {
- return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
- (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
- }
+
+class SDivOperator
+ : public ConcreteOperator<PossiblyExactOperator, Instruction::SDiv> {
+ ~SDivOperator(); // DO NOT IMPLEMENT
+};
+class UDivOperator
+ : public ConcreteOperator<PossiblyExactOperator, Instruction::UDiv> {
+ ~UDivOperator(); // DO NOT IMPLEMENT
};
+class AShrOperator
+ : public ConcreteOperator<PossiblyExactOperator, Instruction::AShr> {
+ ~AShrOperator(); // DO NOT IMPLEMENT
+};
+class LShrOperator
+ : public ConcreteOperator<PossiblyExactOperator, Instruction::LShr> {
+ ~LShrOperator(); // DO NOT IMPLEMENT
+};
+
+
+
+class GEPOperator
+ : public ConcreteOperator<Operator, Instruction::GetElementPtr> {
+ ~GEPOperator(); // DO NOT IMPLEMENT
-class GEPOperator : public Operator {
enum {
IsInBounds = (1 << 0)
};
- ~GEPOperator(); // do not implement
-
friend class GetElementPtrInst;
friend class ConstantExpr;
void setIsInBounds(bool B) {
/// getPointerOperandType - Method to return the pointer operand as a
/// PointerType.
- const PointerType *getPointerOperandType() const {
- return reinterpret_cast<const PointerType*>(getPointerOperand()->getType());
+ Type *getPointerOperandType() const {
+ return getPointerOperand()->getType();
}
unsigned getNumIndices() const { // Note: always non-negative
/// 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())
+ if (ConstantInt *C = dyn_cast<ConstantInt>(I))
+ if (C->isZero())
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<Instruction>(V) && classof(cast<Instruction>(V))) ||
- (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
- }
};
} // End llvm namespace
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