#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Type.h"
-#include "llvm/Support/GetElementPtrTypeIterator.h"
namespace llvm {
class BinaryOperator;
class ConstantExpr;
-/// Operator - This is a utility class that provides an abstraction for the
-/// common functionality between Instructions and ConstantExprs.
-///
+/// This is a utility class that provides an abstraction for the common
+/// functionality between Instructions and ConstantExprs.
class Operator : public User {
private:
// 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;
+ void *operator new(size_t, unsigned) = delete;
+ void *operator new(size_t s) = delete;
+ Operator() = delete;
protected:
- // NOTE: Cannot use LLVM_DELETED_FUNCTION because it's not legal to delete
+ // NOTE: Cannot use = delete 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();
+ ~Operator() override;
public:
- /// getOpcode - Return the opcode for this Instruction or ConstantExpr.
- ///
+ /// 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.
- ///
+ /// 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();
}
};
-/// 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.
-///
+/// 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 {
}
public:
- /// hasNoUnsignedWrap - Test whether this operation is known to never
+ /// 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
+ /// Test whether this operation is known to never
/// undergo signed overflow, aka the nsw property.
bool hasNoSignedWrap() const {
return (SubclassOptionalData & NoSignedWrap) != 0;
}
};
-/// PossiblyExactOperator - A udiv or sdiv instruction, which can be marked as
-/// "exact", indicating that no bits are destroyed.
+/// A udiv or sdiv instruction, which can be marked as "exact",
+/// indicating that no bits are destroyed.
class PossiblyExactOperator : public Operator {
public:
enum {
}
public:
- /// isExact - Test whether this division is known to be exact, with
- /// zero remainder.
+ /// Test whether this division is known to be exact, with zero remainder.
bool isExact() const {
return SubclassOptionalData & IsExact;
}
{ }
/// Whether any flag is set
- bool any() { return Flags != 0; }
+ bool any() const { return Flags != 0; }
/// Set all the flags to false
void clear() { Flags = 0; }
/// Flag queries
- bool noNaNs() { return 0 != (Flags & NoNaNs); }
- bool noInfs() { return 0 != (Flags & NoInfs); }
- bool noSignedZeros() { return 0 != (Flags & NoSignedZeros); }
- bool allowReciprocal() { return 0 != (Flags & AllowReciprocal); }
- bool unsafeAlgebra() { return 0 != (Flags & UnsafeAlgebra); }
+ bool noNaNs() const { return 0 != (Flags & NoNaNs); }
+ bool noInfs() const { return 0 != (Flags & NoInfs); }
+ bool noSignedZeros() const { return 0 != (Flags & NoSignedZeros); }
+ bool allowReciprocal() const { return 0 != (Flags & AllowReciprocal); }
+ bool unsafeAlgebra() const { return 0 != (Flags & UnsafeAlgebra); }
/// Flag setters
void setNoNaNs() { Flags |= NoNaNs; }
setNoSignedZeros();
setAllowReciprocal();
}
+
+ void operator&=(const FastMathFlags &OtherFlags) {
+ Flags &= OtherFlags.Flags;
+ }
};
-/// FPMathOperator - Utility class for floating point operations which can have
+/// Utility class for floating point operations which can have
/// information about relaxed accuracy requirements attached to them.
class FPMathOperator : public Operator {
private:
(B * FastMathFlags::AllowReciprocal);
}
- /// Convenience function for setting all the fast-math flags
+ /// Convenience function for setting multiple fast-math flags.
+ /// FMF is a mask of the bits to set.
void setFastMathFlags(FastMathFlags FMF) {
SubclassOptionalData |= FMF.Flags;
}
+ /// Convenience function for copying all fast-math flags.
+ /// All values in FMF are transferred to this operator.
+ void copyFastMathFlags(FastMathFlags FMF) {
+ SubclassOptionalData = FMF.Flags;
+ }
+
public:
/// Test whether this operation is permitted to be
/// algebraically transformed, aka the 'A' fast-math property.
};
-/// ConcreteOperator - A helper template for defining operators for individual
-/// opcodes.
+/// A helper template for defining operators for individual opcodes.
template<typename SuperClass, unsigned Opc>
class ConcreteOperator : public SuperClass {
public:
};
+class ZExtOperator : public ConcreteOperator<Operator, Instruction::ZExt> {};
+
class GEPOperator
: public ConcreteOperator<Operator, Instruction::GetElementPtr> {
}
public:
- /// isInBounds - Test whether this is an inbounds GEP, as defined
- /// by LangRef.html.
+ /// Test whether this is an inbounds GEP, as defined by LangRef.html.
bool isInBounds() const {
return SubclassOptionalData & IsInBounds;
}
return 0U; // get index for modifying correct operand
}
- /// getPointerOperandType - Method to return the pointer operand as a
- /// PointerType.
+ /// 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.
+ Type *getSourceElementType() const;
+
+ /// Method to return the address space of the pointer operand.
unsigned getPointerAddressSpace() const {
- return cast<PointerType>(getPointerOperandType())->getAddressSpace();
+ return getPointerOperandType()->getPointerAddressSpace();
}
unsigned getNumIndices() const { // Note: always non-negative
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
+ /// 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) {
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
+ /// 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) {
/// undefined (it is *not* preserved!). The APInt passed into this routine
/// must be at exactly as wide as the IntPtr type for the address space of the
/// base GEP pointer.
- bool accumulateConstantOffset(const DataLayout &DL, APInt &Offset) const {
- assert(Offset.getBitWidth() ==
- DL.getPointerSizeInBits(getPointerAddressSpace()) &&
- "The offset must have exactly as many bits as our pointer.");
-
- for (gep_type_iterator GTI = gep_type_begin(this), GTE = gep_type_end(this);
- GTI != GTE; ++GTI) {
- ConstantInt *OpC = dyn_cast<ConstantInt>(GTI.getOperand());
- if (!OpC)
- return false;
- if (OpC->isZero())
- continue;
-
- // Handle a struct index, which adds its field offset to the pointer.
- if (StructType *STy = dyn_cast<StructType>(*GTI)) {
- unsigned ElementIdx = OpC->getZExtValue();
- const StructLayout *SL = DL.getStructLayout(STy);
- Offset += APInt(Offset.getBitWidth(),
- SL->getElementOffset(ElementIdx));
- continue;
- }
-
- // For array or vector indices, scale the index by the size of the type.
- APInt Index = OpC->getValue().sextOrTrunc(Offset.getBitWidth());
- Offset += Index * APInt(Offset.getBitWidth(),
- DL.getTypeAllocSize(GTI.getIndexedType()));
- }
- return true;
- }
-
+ bool accumulateConstantOffset(const DataLayout &DL, APInt &Offset) const;
};
class PtrToIntOperator
return 0U; // get index for modifying correct operand
}
- /// getPointerOperandType - Method to return the pointer operand as a
- /// PointerType.
+ /// 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.
+ /// Method to return the address space of the pointer operand.
unsigned getPointerAddressSpace() const {
return cast<PointerType>(getPointerOperandType())->getAddressSpace();
}
};
+class BitCastOperator
+ : public ConcreteOperator<Operator, Instruction::BitCast> {
+ friend class BitCastInst;
+ friend class ConstantExpr;
+
+public:
+ Type *getSrcTy() const {
+ return getOperand(0)->getType();
+ }
+
+ Type *getDestTy() const {
+ return getType();
+ }
+};
} // End llvm namespace
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