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diff --git a/include/llvm/Operator.h b/include/llvm/Operator.h
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-//===-- llvm/Operator.h - Operator utility subclass -------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines various classes for working with Instructions and
-// ConstantExprs.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_OPERATOR_H
-#define LLVM_OPERATOR_H
-
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Instruction.h"
-#include "llvm/Type.h"
-
-namespace llvm {
-
-class GetElementPtrInst;
-class BinaryOperator;
-class ConstantExpr;
-
-/// Operator - This is a utility class that provides an abstraction for the
-/// common functionality between Instructions and ConstantExprs.
-///
-class Operator : public User {
-private:
- // Do not implement any of these. The Operator class is intended to be used
- // as a utility, and is never itself instantiated.
- void *operator new(size_t, unsigned) LLVM_DELETED_FUNCTION;
- void *operator new(size_t s) LLVM_DELETED_FUNCTION;
- Operator() LLVM_DELETED_FUNCTION;
-
-protected:
- // NOTE: Cannot use LLVM_DELETED_FUNCTION because it's not legal to delete
- // an overridden method that's not deleted in the base class. Cannot leave
- // this unimplemented because that leads to an ODR-violation.
- ~Operator();
-
-public:
- /// getOpcode - Return the opcode for this Instruction or ConstantExpr.
- ///
- unsigned getOpcode() const {
- if (const Instruction *I = dyn_cast<Instruction>(this))
- return I->getOpcode();
- return cast<ConstantExpr>(this)->getOpcode();
- }
-
- /// getOpcode - If V is an Instruction or ConstantExpr, return its
- /// opcode. Otherwise return UserOp1.
- ///
- static unsigned getOpcode(const Value *V) {
- if (const Instruction *I = dyn_cast<Instruction>(V))
- return I->getOpcode();
- if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- return CE->getOpcode();
- return Instruction::UserOp1;
- }
-
- static inline bool classof(const Instruction *) { return true; }
- static inline bool classof(const ConstantExpr *) { return true; }
- static inline bool classof(const Value *V) {
- return isa<Instruction>(V) || isa<ConstantExpr>(V);
- }
-};
-
-/// OverflowingBinaryOperator - Utility class for integer arithmetic operators
-/// 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:
- enum {
- NoUnsignedWrap = (1 << 0),
- NoSignedWrap = (1 << 1)
- };
-
-private:
- friend class BinaryOperator;
- friend class ConstantExpr;
- void setHasNoUnsignedWrap(bool B) {
- SubclassOptionalData =
- (SubclassOptionalData & ~NoUnsignedWrap) | (B * NoUnsignedWrap);
- }
- void setHasNoSignedWrap(bool B) {
- SubclassOptionalData =
- (SubclassOptionalData & ~NoSignedWrap) | (B * NoSignedWrap);
- }
-
-public:
- /// hasNoUnsignedWrap - Test whether this operation is known to never
- /// undergo unsigned overflow, aka the nuw property.
- bool hasNoUnsignedWrap() const {
- return SubclassOptionalData & NoUnsignedWrap;
- }
-
- /// hasNoSignedWrap - Test whether this operation is known to never
- /// undergo signed overflow, aka the nsw property.
- bool hasNoSignedWrap() const {
- return (SubclassOptionalData & NoSignedWrap) != 0;
- }
-
- static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::Add ||
- I->getOpcode() == Instruction::Sub ||
- 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::Shl;
- }
- static inline bool classof(const Value *V) {
- return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
- (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
- }
-};
-
-/// PossiblyExactOperator - A udiv or sdiv instruction, which can be marked as
-/// "exact", indicating that no bits are destroyed.
-class PossiblyExactOperator : public Operator {
-public:
- enum {
- IsExact = (1 << 0)
- };
-
-private:
- 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 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))) ||
- (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
- }
-};
-
-/// FPMathOperator - Utility class for floating point operations which can have
-/// information about relaxed accuracy requirements attached to them.
-class FPMathOperator : public Operator {
-public:
-
- /// \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 Instruction *I) {
- return I->getType()->isFPOrFPVectorTy();
- }
- static inline bool classof(const Value *V) {
- return isa<Instruction>(V) && classof(cast<Instruction>(V));
- }
-};
-
-
-/// ConcreteOperator - A helper template for defining operators for individual
-/// opcodes.
-template<typename SuperClass, unsigned Opc>
-class ConcreteOperator : public SuperClass {
-public:
- static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Opc;
- }
- static inline bool classof(const ConstantExpr *CE) {
- return CE->getOpcode() == Opc;
- }
- static inline bool classof(const Value *V) {
- return (isa<Instruction>(V) && classof(cast<Instruction>(V))) ||
- (isa<ConstantExpr>(V) && classof(cast<ConstantExpr>(V)));
- }
-};
-
-class AddOperator
- : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Add> {
-};
-class SubOperator
- : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Sub> {
-};
-class MulOperator
- : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Mul> {
-};
-class ShlOperator
- : public ConcreteOperator<OverflowingBinaryOperator, Instruction::Shl> {
-};
-
-
-class SDivOperator
- : public ConcreteOperator<PossiblyExactOperator, Instruction::SDiv> {
-};
-class UDivOperator
- : public ConcreteOperator<PossiblyExactOperator, Instruction::UDiv> {
-};
-class AShrOperator
- : public ConcreteOperator<PossiblyExactOperator, Instruction::AShr> {
-};
-class LShrOperator
- : public ConcreteOperator<PossiblyExactOperator, Instruction::LShr> {
-};
-
-
-
-class GEPOperator
- : public ConcreteOperator<Operator, Instruction::GetElementPtr> {
- enum {
- IsInBounds = (1 << 0)
- };
-
- friend class GetElementPtrInst;
- friend class ConstantExpr;
- void setIsInBounds(bool B) {
- SubclassOptionalData =
- (SubclassOptionalData & ~IsInBounds) | (B * IsInBounds);
- }
-
-public:
- /// isInBounds - Test whether this is an inbounds GEP, as defined
- /// by LangRef.html.
- bool isInBounds() const {
- return SubclassOptionalData & IsInBounds;
- }
-
- 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.
- Type *getPointerOperandType() const {
- return getPointerOperand()->getType();
- }
-
- /// getPointerAddressSpace - Method to return the address space of the
- /// pointer operand.
- unsigned getPointerAddressSpace() const {
- return cast<PointerType>(getPointerOperandType())->getAddressSpace();
- }
-
- 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 (ConstantInt *C = dyn_cast<ConstantInt>(I))
- if (C->isZero())
- continue;
- return false;
- }
- return true;
- }
-
- /// hasAllConstantIndices - Return true if all of the indices of this GEP are
- /// constant integers. If so, the result pointer and the first operand have
- /// a constant offset between them.
- bool hasAllConstantIndices() const {
- for (const_op_iterator I = idx_begin(), E = idx_end(); I != E; ++I) {
- if (!isa<ConstantInt>(I))
- return false;
- }
- return true;
- }
-};
-
-} // End llvm namespace
-
-#endif
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