#include "llvm/Instruction.h"
#include "llvm/OperandTraits.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/ADT/Twine.h"
namespace llvm {
+class LLVMContext;
+
//===----------------------------------------------------------------------===//
// TerminatorInst Class
//===----------------------------------------------------------------------===//
///
class TerminatorInst : public Instruction {
protected:
- TerminatorInst(const Type *Ty, Instruction::TermOps iType,
+ TerminatorInst(Type *Ty, Instruction::TermOps iType,
Use *Ops, unsigned NumOps,
Instruction *InsertBefore = 0)
: Instruction(Ty, iType, Ops, NumOps, InsertBefore) {}
- TerminatorInst(const Type *Ty, Instruction::TermOps iType,
+ TerminatorInst(Type *Ty, Instruction::TermOps iType,
Use *Ops, unsigned NumOps, BasicBlock *InsertAtEnd)
: Instruction(Ty, iType, Ops, NumOps, InsertAtEnd) {}
virtual BasicBlock *getSuccessorV(unsigned idx) const = 0;
virtual unsigned getNumSuccessorsV() const = 0;
virtual void setSuccessorV(unsigned idx, BasicBlock *B) = 0;
+ virtual TerminatorInst *clone_impl() const = 0;
public:
- virtual Instruction *clone() const = 0;
-
/// getNumSuccessors - Return the number of successors that this terminator
/// has.
unsigned getNumSuccessors() const {
class UnaryInstruction : public Instruction {
void *operator new(size_t, unsigned); // Do not implement
- UnaryInstruction(const UnaryInstruction&); // Do not implement
protected:
- UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
+ UnaryInstruction(Type *Ty, unsigned iType, Value *V,
Instruction *IB = 0)
: Instruction(Ty, iType, &Op<0>(), 1, IB) {
Op<0>() = V;
}
- UnaryInstruction(const Type *Ty, unsigned iType, Value *V, BasicBlock *IAE)
+ UnaryInstruction(Type *Ty, unsigned iType, Value *V, BasicBlock *IAE)
: Instruction(Ty, iType, &Op<0>(), 1, IAE) {
Op<0>() = V;
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const UnaryInstruction *) { return true; }
static inline bool classof(const Instruction *I) {
- return I->getOpcode() == Instruction::Malloc ||
- I->getOpcode() == Instruction::Alloca ||
- I->getOpcode() == Instruction::Free ||
+ return I->getOpcode() == Instruction::Alloca ||
I->getOpcode() == Instruction::Load ||
I->getOpcode() == Instruction::VAArg ||
I->getOpcode() == Instruction::ExtractValue ||
};
template <>
-struct OperandTraits<UnaryInstruction> : FixedNumOperandTraits<1> {
+struct OperandTraits<UnaryInstruction> :
+ public FixedNumOperandTraits<UnaryInstruction, 1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(UnaryInstruction, Value)
void *operator new(size_t, unsigned); // Do not implement
protected:
void init(BinaryOps iType);
- BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
- const std::string &Name, Instruction *InsertBefore);
- BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
- const std::string &Name, BasicBlock *InsertAtEnd);
+ BinaryOperator(BinaryOps iType, Value *S1, Value *S2, Type *Ty,
+ const Twine &Name, Instruction *InsertBefore);
+ BinaryOperator(BinaryOps iType, Value *S1, Value *S2, Type *Ty,
+ const Twine &Name, BasicBlock *InsertAtEnd);
+ virtual BinaryOperator *clone_impl() const;
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
/// Instruction is allowed to be a dereferenced end iterator.
///
static BinaryOperator *Create(BinaryOps Op, Value *S1, Value *S2,
- const std::string &Name = "",
+ const Twine &Name = Twine(),
Instruction *InsertBefore = 0);
/// Create() - Construct a binary instruction, given the opcode and the two
/// BasicBlock specified.
///
static BinaryOperator *Create(BinaryOps Op, Value *S1, Value *S2,
- const std::string &Name,
- BasicBlock *InsertAtEnd);
+ const Twine &Name, BasicBlock *InsertAtEnd);
/// Create* - These methods just forward to Create, and are useful when you
/// statically know what type of instruction you're going to create. These
/// helpers just save some typing.
#define HANDLE_BINARY_INST(N, OPC, CLASS) \
static BinaryOperator *Create##OPC(Value *V1, Value *V2, \
- const std::string &Name = "") {\
+ const Twine &Name = "") {\
return Create(Instruction::OPC, V1, V2, Name);\
}
#include "llvm/Instruction.def"
#define HANDLE_BINARY_INST(N, OPC, CLASS) \
static BinaryOperator *Create##OPC(Value *V1, Value *V2, \
- const std::string &Name, BasicBlock *BB) {\
+ const Twine &Name, BasicBlock *BB) {\
return Create(Instruction::OPC, V1, V2, Name, BB);\
}
#include "llvm/Instruction.def"
#define HANDLE_BINARY_INST(N, OPC, CLASS) \
static BinaryOperator *Create##OPC(Value *V1, Value *V2, \
- const std::string &Name, Instruction *I) {\
+ const Twine &Name, Instruction *I) {\
return Create(Instruction::OPC, V1, V2, Name, I);\
}
#include "llvm/Instruction.def"
-
+ static BinaryOperator *CreateNSW(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name = "") {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name);
+ BO->setHasNoSignedWrap(true);
+ return BO;
+ }
+ static BinaryOperator *CreateNSW(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name, BasicBlock *BB) {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name, BB);
+ BO->setHasNoSignedWrap(true);
+ return BO;
+ }
+ static BinaryOperator *CreateNSW(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name, Instruction *I) {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name, I);
+ BO->setHasNoSignedWrap(true);
+ return BO;
+ }
+
+ static BinaryOperator *CreateNUW(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name = "") {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name);
+ BO->setHasNoUnsignedWrap(true);
+ return BO;
+ }
+ static BinaryOperator *CreateNUW(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name, BasicBlock *BB) {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name, BB);
+ BO->setHasNoUnsignedWrap(true);
+ return BO;
+ }
+ static BinaryOperator *CreateNUW(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name, Instruction *I) {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name, I);
+ BO->setHasNoUnsignedWrap(true);
+ return BO;
+ }
+
+ static BinaryOperator *CreateExact(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name = "") {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name);
+ BO->setIsExact(true);
+ return BO;
+ }
+ static BinaryOperator *CreateExact(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name, BasicBlock *BB) {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name, BB);
+ BO->setIsExact(true);
+ return BO;
+ }
+ static BinaryOperator *CreateExact(BinaryOps Opc, Value *V1, Value *V2,
+ const Twine &Name, Instruction *I) {
+ BinaryOperator *BO = Create(Opc, V1, V2, Name, I);
+ BO->setIsExact(true);
+ return BO;
+ }
+
+#define DEFINE_HELPERS(OPC, NUWNSWEXACT) \
+ static BinaryOperator *Create ## NUWNSWEXACT ## OPC \
+ (Value *V1, Value *V2, const Twine &Name = "") { \
+ return Create ## NUWNSWEXACT(Instruction::OPC, V1, V2, Name); \
+ } \
+ static BinaryOperator *Create ## NUWNSWEXACT ## OPC \
+ (Value *V1, Value *V2, const Twine &Name, BasicBlock *BB) { \
+ return Create ## NUWNSWEXACT(Instruction::OPC, V1, V2, Name, BB); \
+ } \
+ static BinaryOperator *Create ## NUWNSWEXACT ## OPC \
+ (Value *V1, Value *V2, const Twine &Name, Instruction *I) { \
+ return Create ## NUWNSWEXACT(Instruction::OPC, V1, V2, Name, I); \
+ }
+
+ DEFINE_HELPERS(Add, NSW) // CreateNSWAdd
+ DEFINE_HELPERS(Add, NUW) // CreateNUWAdd
+ DEFINE_HELPERS(Sub, NSW) // CreateNSWSub
+ DEFINE_HELPERS(Sub, NUW) // CreateNUWSub
+ DEFINE_HELPERS(Mul, NSW) // CreateNSWMul
+ DEFINE_HELPERS(Mul, NUW) // CreateNUWMul
+ DEFINE_HELPERS(Shl, NSW) // CreateNSWShl
+ DEFINE_HELPERS(Shl, NUW) // CreateNUWShl
+
+ DEFINE_HELPERS(SDiv, Exact) // CreateExactSDiv
+ DEFINE_HELPERS(UDiv, Exact) // CreateExactUDiv
+ DEFINE_HELPERS(AShr, Exact) // CreateExactAShr
+ DEFINE_HELPERS(LShr, Exact) // CreateExactLShr
+
+#undef DEFINE_HELPERS
+
/// Helper functions to construct and inspect unary operations (NEG and NOT)
/// via binary operators SUB and XOR:
///
/// CreateNeg, CreateNot - Create the NEG and NOT
/// instructions out of SUB and XOR instructions.
///
- static BinaryOperator *CreateNeg(Value *Op, const std::string &Name = "",
+ static BinaryOperator *CreateNeg(Value *Op, const Twine &Name = "",
Instruction *InsertBefore = 0);
- static BinaryOperator *CreateNeg(Value *Op, const std::string &Name,
+ static BinaryOperator *CreateNeg(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd);
- static BinaryOperator *CreateFNeg(Value *Op, const std::string &Name = "",
+ static BinaryOperator *CreateNSWNeg(Value *Op, const Twine &Name = "",
+ Instruction *InsertBefore = 0);
+ static BinaryOperator *CreateNSWNeg(Value *Op, const Twine &Name,
+ BasicBlock *InsertAtEnd);
+ static BinaryOperator *CreateNUWNeg(Value *Op, const Twine &Name = "",
+ Instruction *InsertBefore = 0);
+ static BinaryOperator *CreateNUWNeg(Value *Op, const Twine &Name,
+ BasicBlock *InsertAtEnd);
+ static BinaryOperator *CreateFNeg(Value *Op, const Twine &Name = "",
Instruction *InsertBefore = 0);
- static BinaryOperator *CreateFNeg(Value *Op, const std::string &Name,
+ static BinaryOperator *CreateFNeg(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd);
- static BinaryOperator *CreateNot(Value *Op, const std::string &Name = "",
+ static BinaryOperator *CreateNot(Value *Op, const Twine &Name = "",
Instruction *InsertBefore = 0);
- static BinaryOperator *CreateNot(Value *Op, const std::string &Name,
+ static BinaryOperator *CreateNot(Value *Op, const Twine &Name,
BasicBlock *InsertAtEnd);
/// isNeg, isFNeg, isNot - Check if the given Value is a
return static_cast<BinaryOps>(Instruction::getOpcode());
}
- virtual BinaryOperator *clone() const;
-
/// swapOperands - Exchange the two operands to this instruction.
/// This instruction is safe to use on any binary instruction and
/// does not modify the semantics of the instruction. If the instruction
///
bool swapOperands();
+ /// setHasNoUnsignedWrap - Set or clear the nsw flag on this instruction,
+ /// which must be an operator which supports this flag. See LangRef.html
+ /// for the meaning of this flag.
+ void setHasNoUnsignedWrap(bool b = true);
+
+ /// setHasNoSignedWrap - Set or clear the nsw flag on this instruction,
+ /// which must be an operator which supports this flag. See LangRef.html
+ /// for the meaning of this flag.
+ void setHasNoSignedWrap(bool b = true);
+
+ /// setIsExact - Set or clear the exact flag on this instruction,
+ /// which must be an operator which supports this flag. See LangRef.html
+ /// for the meaning of this flag.
+ void setIsExact(bool b = true);
+
+ /// hasNoUnsignedWrap - Determine whether the no unsigned wrap flag is set.
+ bool hasNoUnsignedWrap() const;
+
+ /// hasNoSignedWrap - Determine whether the no signed wrap flag is set.
+ bool hasNoSignedWrap() const;
+
+ /// isExact - Determine whether the exact flag is set.
+ bool isExact() const;
+
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const BinaryOperator *) { return true; }
static inline bool classof(const Instruction *I) {
};
template <>
-struct OperandTraits<BinaryOperator> : FixedNumOperandTraits<2> {
+struct OperandTraits<BinaryOperator> :
+ public FixedNumOperandTraits<BinaryOperator, 2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BinaryOperator, Value)
/// if (isa<CastInst>(Instr)) { ... }
/// @brief Base class of casting instructions.
class CastInst : public UnaryInstruction {
- /// @brief Copy constructor
- CastInst(const CastInst &CI)
- : UnaryInstruction(CI.getType(), CI.getOpcode(), CI.getOperand(0)) {
- }
- /// @brief Do not allow default construction
- CastInst();
protected:
/// @brief Constructor with insert-before-instruction semantics for subclasses
- CastInst(const Type *Ty, unsigned iType, Value *S,
- const std::string &NameStr = "", Instruction *InsertBefore = 0)
+ CastInst(Type *Ty, unsigned iType, Value *S,
+ const Twine &NameStr = "", Instruction *InsertBefore = 0)
: UnaryInstruction(Ty, iType, S, InsertBefore) {
setName(NameStr);
}
/// @brief Constructor with insert-at-end-of-block semantics for subclasses
- CastInst(const Type *Ty, unsigned iType, Value *S,
- const std::string &NameStr, BasicBlock *InsertAtEnd)
+ CastInst(Type *Ty, unsigned iType, Value *S,
+ const Twine &NameStr, BasicBlock *InsertAtEnd)
: UnaryInstruction(Ty, iType, S, InsertAtEnd) {
setName(NameStr);
}
static CastInst *Create(
Instruction::CastOps, ///< The opcode of the cast instruction
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which cast should be made
- const std::string &Name = "", ///< Name for the instruction
+ Type *Ty, ///< The type to which cast should be made
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// Provides a way to construct any of the CastInst subclasses using an
static CastInst *Create(
Instruction::CastOps, ///< The opcode for the cast instruction
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which operand is casted
- const std::string &Name, ///< The name for the instruction
+ Type *Ty, ///< The type to which operand is casted
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a ZExt or BitCast cast instruction
static CastInst *CreateZExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which cast should be made
- const std::string &Name = "", ///< Name for the instruction
+ Type *Ty, ///< The type to which cast should be made
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a ZExt or BitCast cast instruction
static CastInst *CreateZExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which operand is casted
- const std::string &Name, ///< The name for the instruction
+ Type *Ty, ///< The type to which operand is casted
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a SExt or BitCast cast instruction
static CastInst *CreateSExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which cast should be made
- const std::string &Name = "", ///< Name for the instruction
+ Type *Ty, ///< The type to which cast should be made
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a SExt or BitCast cast instruction
static CastInst *CreateSExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which operand is casted
- const std::string &Name, ///< The name for the instruction
+ Type *Ty, ///< The type to which operand is casted
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a BitCast or a PtrToInt cast instruction
static CastInst *CreatePointerCast(
Value *S, ///< The pointer value to be casted (operand 0)
- const Type *Ty, ///< The type to which operand is casted
- const std::string &Name, ///< The name for the instruction
+ Type *Ty, ///< The type to which operand is casted
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a BitCast or a PtrToInt cast instruction
static CastInst *CreatePointerCast(
Value *S, ///< The pointer value to be casted (operand 0)
- const Type *Ty, ///< The type to which cast should be made
- const std::string &Name = "", ///< Name for the instruction
+ Type *Ty, ///< The type to which cast should be made
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a ZExt, BitCast, or Trunc for int -> int casts.
static CastInst *CreateIntegerCast(
Value *S, ///< The pointer value to be casted (operand 0)
- const Type *Ty, ///< The type to which cast should be made
+ Type *Ty, ///< The type to which cast should be made
bool isSigned, ///< Whether to regard S as signed or not
- const std::string &Name = "", ///< Name for the instruction
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a ZExt, BitCast, or Trunc for int -> int casts.
static CastInst *CreateIntegerCast(
Value *S, ///< The integer value to be casted (operand 0)
- const Type *Ty, ///< The integer type to which operand is casted
+ Type *Ty, ///< The integer type to which operand is casted
bool isSigned, ///< Whether to regard S as signed or not
- const std::string &Name, ///< The name for the instruction
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create an FPExt, BitCast, or FPTrunc for fp -> fp casts
static CastInst *CreateFPCast(
Value *S, ///< The floating point value to be casted
- const Type *Ty, ///< The floating point type to cast to
- const std::string &Name = "", ///< Name for the instruction
+ Type *Ty, ///< The floating point type to cast to
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create an FPExt, BitCast, or FPTrunc for fp -> fp casts
static CastInst *CreateFPCast(
Value *S, ///< The floating point value to be casted
- const Type *Ty, ///< The floating point type to cast to
- const std::string &Name, ///< The name for the instruction
+ Type *Ty, ///< The floating point type to cast to
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a Trunc or BitCast cast instruction
static CastInst *CreateTruncOrBitCast(
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which cast should be made
- const std::string &Name = "", ///< Name for the instruction
+ Type *Ty, ///< The type to which cast should be made
+ const Twine &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a Trunc or BitCast cast instruction
static CastInst *CreateTruncOrBitCast(
Value *S, ///< The value to be casted (operand 0)
- const Type *Ty, ///< The type to which operand is casted
- const std::string &Name, ///< The name for the instruction
+ Type *Ty, ///< The type to which operand is casted
+ const Twine &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Check whether it is valid to call getCastOpcode for these types.
static bool isCastable(
- const Type *SrcTy, ///< The Type from which the value should be cast.
- const Type *DestTy ///< The Type to which the value should be cast.
+ Type *SrcTy, ///< The Type from which the value should be cast.
+ Type *DestTy ///< The Type to which the value should be cast.
);
/// Returns the opcode necessary to cast Val into Ty using usual casting
static Instruction::CastOps getCastOpcode(
const Value *Val, ///< The value to cast
bool SrcIsSigned, ///< Whether to treat the source as signed
- const Type *Ty, ///< The Type to which the value should be casted
+ Type *Ty, ///< The Type to which the value should be casted
bool DstIsSigned ///< Whether to treate the dest. as signed
);
/// A lossless cast is one that does not alter the basic value. It implies
/// a no-op cast but is more stringent, preventing things like int->float,
- /// long->double, int->ptr, or vector->anything.
+ /// long->double, or int->ptr.
/// @returns true iff the cast is lossless.
/// @brief Determine if this is a lossless cast.
bool isLosslessCast() const;
/// platform. Generally, the result of TargetData::getIntPtrType() should be
/// passed in. If that's not available, use Type::Int64Ty, which will make
/// the isNoopCast call conservative.
+ /// @brief Determine if the described cast is a no-op cast.
+ static bool isNoopCast(
+ Instruction::CastOps Opcode, ///< Opcode of cast
+ Type *SrcTy, ///< SrcTy of cast
+ Type *DstTy, ///< DstTy of cast
+ Type *IntPtrTy ///< Integer type corresponding to Ptr types, or null
+ );
+
/// @brief Determine if this cast is a no-op cast.
bool isNoopCast(
- const Type *IntPtrTy ///< Integer type corresponding to pointer
+ Type *IntPtrTy ///< Integer type corresponding to pointer
) const;
/// Determine how a pair of casts can be eliminated, if they can be at all.
static unsigned isEliminableCastPair(
Instruction::CastOps firstOpcode, ///< Opcode of first cast
Instruction::CastOps secondOpcode, ///< Opcode of second cast
- const Type *SrcTy, ///< SrcTy of 1st cast
- const Type *MidTy, ///< DstTy of 1st cast & SrcTy of 2nd cast
- const Type *DstTy, ///< DstTy of 2nd cast
- const Type *IntPtrTy ///< Integer type corresponding to Ptr types
+ Type *SrcTy, ///< SrcTy of 1st cast
+ Type *MidTy, ///< DstTy of 1st cast & SrcTy of 2nd cast
+ Type *DstTy, ///< DstTy of 2nd cast
+ Type *IntPtrTy ///< Integer type corresponding to Ptr types, or null
);
/// @brief Return the opcode of this CastInst
}
/// @brief Return the source type, as a convenience
- const Type* getSrcTy() const { return getOperand(0)->getType(); }
+ Type* getSrcTy() const { return getOperand(0)->getType(); }
/// @brief Return the destination type, as a convenience
- const Type* getDestTy() const { return getType(); }
+ Type* getDestTy() const { return getType(); }
/// This method can be used to determine if a cast from S to DstTy using
/// Opcode op is valid or not.
/// @returns true iff the proposed cast is valid.
/// @brief Determine if a cast is valid without creating one.
- static bool castIsValid(Instruction::CastOps op, Value *S, const Type *DstTy);
+ static bool castIsValid(Instruction::CastOps op, Value *S, Type *DstTy);
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const CastInst *) { return true; }
/// This class is the base class for the comparison instructions.
/// @brief Abstract base class of comparison instructions.
-// FIXME: why not derive from BinaryOperator?
-class CmpInst: public Instruction {
+class CmpInst : public Instruction {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
CmpInst(); // do not implement
protected:
- CmpInst(const Type *ty, Instruction::OtherOps op, unsigned short pred,
- Value *LHS, Value *RHS, const std::string &Name = "",
+ CmpInst(Type *ty, Instruction::OtherOps op, unsigned short pred,
+ Value *LHS, Value *RHS, const Twine &Name = "",
Instruction *InsertBefore = 0);
- CmpInst(const Type *ty, Instruction::OtherOps op, unsigned short pred,
- Value *LHS, Value *RHS, const std::string &Name,
+ CmpInst(Type *ty, Instruction::OtherOps op, unsigned short pred,
+ Value *LHS, Value *RHS, const Twine &Name,
BasicBlock *InsertAtEnd);
+ virtual void Anchor() const; // Out of line virtual method.
public:
/// This enumeration lists the possible predicates for CmpInst subclasses.
/// Values in the range 0-31 are reserved for FCmpInst, while values in the
/// range 32-64 are reserved for ICmpInst. This is necessary to ensure the
/// predicate values are not overlapping between the classes.
enum Predicate {
- // Opcode U L G E Intuitive operation
- FCMP_FALSE = 0, /// 0 0 0 0 Always false (always folded)
- FCMP_OEQ = 1, /// 0 0 0 1 True if ordered and equal
- FCMP_OGT = 2, /// 0 0 1 0 True if ordered and greater than
- FCMP_OGE = 3, /// 0 0 1 1 True if ordered and greater than or equal
- FCMP_OLT = 4, /// 0 1 0 0 True if ordered and less than
- FCMP_OLE = 5, /// 0 1 0 1 True if ordered and less than or equal
- FCMP_ONE = 6, /// 0 1 1 0 True if ordered and operands are unequal
- FCMP_ORD = 7, /// 0 1 1 1 True if ordered (no nans)
- FCMP_UNO = 8, /// 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
- FCMP_UEQ = 9, /// 1 0 0 1 True if unordered or equal
- FCMP_UGT = 10, /// 1 0 1 0 True if unordered or greater than
- FCMP_UGE = 11, /// 1 0 1 1 True if unordered, greater than, or equal
- FCMP_ULT = 12, /// 1 1 0 0 True if unordered or less than
- FCMP_ULE = 13, /// 1 1 0 1 True if unordered, less than, or equal
- FCMP_UNE = 14, /// 1 1 1 0 True if unordered or not equal
- FCMP_TRUE = 15, /// 1 1 1 1 Always true (always folded)
+ // Opcode U L G E Intuitive operation
+ FCMP_FALSE = 0, ///< 0 0 0 0 Always false (always folded)
+ FCMP_OEQ = 1, ///< 0 0 0 1 True if ordered and equal
+ FCMP_OGT = 2, ///< 0 0 1 0 True if ordered and greater than
+ FCMP_OGE = 3, ///< 0 0 1 1 True if ordered and greater than or equal
+ FCMP_OLT = 4, ///< 0 1 0 0 True if ordered and less than
+ FCMP_OLE = 5, ///< 0 1 0 1 True if ordered and less than or equal
+ FCMP_ONE = 6, ///< 0 1 1 0 True if ordered and operands are unequal
+ FCMP_ORD = 7, ///< 0 1 1 1 True if ordered (no nans)
+ FCMP_UNO = 8, ///< 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
+ FCMP_UEQ = 9, ///< 1 0 0 1 True if unordered or equal
+ FCMP_UGT = 10, ///< 1 0 1 0 True if unordered or greater than
+ FCMP_UGE = 11, ///< 1 0 1 1 True if unordered, greater than, or equal
+ FCMP_ULT = 12, ///< 1 1 0 0 True if unordered or less than
+ FCMP_ULE = 13, ///< 1 1 0 1 True if unordered, less than, or equal
+ FCMP_UNE = 14, ///< 1 1 1 0 True if unordered or not equal
+ FCMP_TRUE = 15, ///< 1 1 1 1 Always true (always folded)
FIRST_FCMP_PREDICATE = FCMP_FALSE,
LAST_FCMP_PREDICATE = FCMP_TRUE,
BAD_FCMP_PREDICATE = FCMP_TRUE + 1,
- ICMP_EQ = 32, /// equal
- ICMP_NE = 33, /// not equal
- ICMP_UGT = 34, /// unsigned greater than
- ICMP_UGE = 35, /// unsigned greater or equal
- ICMP_ULT = 36, /// unsigned less than
- ICMP_ULE = 37, /// unsigned less or equal
- ICMP_SGT = 38, /// signed greater than
- ICMP_SGE = 39, /// signed greater or equal
- ICMP_SLT = 40, /// signed less than
- ICMP_SLE = 41, /// signed less or equal
+ ICMP_EQ = 32, ///< equal
+ ICMP_NE = 33, ///< not equal
+ ICMP_UGT = 34, ///< unsigned greater than
+ ICMP_UGE = 35, ///< unsigned greater or equal
+ ICMP_ULT = 36, ///< unsigned less than
+ ICMP_ULE = 37, ///< unsigned less or equal
+ ICMP_SGT = 38, ///< signed greater than
+ ICMP_SGE = 39, ///< signed greater or equal
+ ICMP_SLT = 40, ///< signed less than
+ ICMP_SLE = 41, ///< signed less or equal
FIRST_ICMP_PREDICATE = ICMP_EQ,
LAST_ICMP_PREDICATE = ICMP_SLE,
BAD_ICMP_PREDICATE = ICMP_SLE + 1
/// instruction into a BasicBlock right before the specified instruction.
/// The specified Instruction is allowed to be a dereferenced end iterator.
/// @brief Create a CmpInst
- static CmpInst *Create(OtherOps Op, unsigned short predicate, Value *S1,
- Value *S2, const std::string &Name = "",
+ static CmpInst *Create(OtherOps Op,
+ unsigned short predicate, Value *S1,
+ Value *S2, const Twine &Name = "",
Instruction *InsertBefore = 0);
/// Construct a compare instruction, given the opcode, the predicate and the
/// the BasicBlock specified.
/// @brief Create a CmpInst
static CmpInst *Create(OtherOps Op, unsigned short predicate, Value *S1,
- Value *S2, const std::string &Name,
- BasicBlock *InsertAtEnd);
-
+ Value *S2, const Twine &Name, BasicBlock *InsertAtEnd);
+
/// @brief Get the opcode casted to the right type
OtherOps getOpcode() const {
return static_cast<OtherOps>(Instruction::getOpcode());
}
/// @brief Return the predicate for this instruction.
- Predicate getPredicate() const { return Predicate(SubclassData); }
+ Predicate getPredicate() const {
+ return Predicate(getSubclassDataFromInstruction());
+ }
/// @brief Set the predicate for this instruction to the specified value.
- void setPredicate(Predicate P) { SubclassData = P; }
+ void setPredicate(Predicate P) { setInstructionSubclassData(P); }
+ static bool isFPPredicate(Predicate P) {
+ return P >= FIRST_FCMP_PREDICATE && P <= LAST_FCMP_PREDICATE;
+ }
+
+ static bool isIntPredicate(Predicate P) {
+ return P >= FIRST_ICMP_PREDICATE && P <= LAST_ICMP_PREDICATE;
+ }
+
+ bool isFPPredicate() const { return isFPPredicate(getPredicate()); }
+ bool isIntPredicate() const { return isIntPredicate(getPredicate()); }
+
+
/// For example, EQ -> NE, UGT -> ULE, SLT -> SGE,
/// OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
/// @returns the inverse predicate for the instruction's current predicate.
/// This is just a convenience that dispatches to the subclasses.
/// @brief Determine if this CmpInst is commutative.
- bool isCommutative();
+ bool isCommutative() const;
/// This is just a convenience that dispatches to the subclasses.
/// @brief Determine if this is an equals/not equals predicate.
- bool isEquality();
+ bool isEquality() const;
+
+ /// @returns true if the comparison is signed, false otherwise.
+ /// @brief Determine if this instruction is using a signed comparison.
+ bool isSigned() const {
+ return isSigned(getPredicate());
+ }
+
+ /// @returns true if the comparison is unsigned, false otherwise.
+ /// @brief Determine if this instruction is using an unsigned comparison.
+ bool isUnsigned() const {
+ return isUnsigned(getPredicate());
+ }
+
+ /// This is just a convenience.
+ /// @brief Determine if this is true when both operands are the same.
+ bool isTrueWhenEqual() const {
+ return isTrueWhenEqual(getPredicate());
+ }
+
+ /// This is just a convenience.
+ /// @brief Determine if this is false when both operands are the same.
+ bool isFalseWhenEqual() const {
+ return isFalseWhenEqual(getPredicate());
+ }
/// @returns true if the predicate is unsigned, false otherwise.
/// @brief Determine if the predicate is an unsigned operation.
/// @brief Determine if the predicate is an unordered operation.
static bool isUnordered(unsigned short predicate);
+ /// Determine if the predicate is true when comparing a value with itself.
+ static bool isTrueWhenEqual(unsigned short predicate);
+
+ /// Determine if the predicate is false when comparing a value with itself.
+ static bool isFalseWhenEqual(unsigned short predicate);
+
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const CmpInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::ICmp ||
- I->getOpcode() == Instruction::FCmp ||
- I->getOpcode() == Instruction::VICmp ||
- I->getOpcode() == Instruction::VFCmp;
+ I->getOpcode() == Instruction::FCmp;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
- /// @brief Create a result type for fcmp/icmp (but not vicmp/vfcmp)
- static const Type* makeCmpResultType(const Type* opnd_type) {
- if (const VectorType* vt = dyn_cast<const VectorType>(opnd_type)) {
- return VectorType::get(Type::Int1Ty, vt->getNumElements());
+
+ /// @brief Create a result type for fcmp/icmp
+ static Type* makeCmpResultType(Type* opnd_type) {
+ if (VectorType* vt = dyn_cast<VectorType>(opnd_type)) {
+ return VectorType::get(Type::getInt1Ty(opnd_type->getContext()),
+ vt->getNumElements());
}
- return Type::Int1Ty;
+ return Type::getInt1Ty(opnd_type->getContext());
+ }
+private:
+ // Shadow Value::setValueSubclassData with a private forwarding method so that
+ // subclasses cannot accidentally use it.
+ void setValueSubclassData(unsigned short D) {
+ Value::setValueSubclassData(D);
}
};
// FIXME: these are redundant if CmpInst < BinaryOperator
template <>
-struct OperandTraits<CmpInst> : FixedNumOperandTraits<2> {
+struct OperandTraits<CmpInst> : public FixedNumOperandTraits<CmpInst, 2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CmpInst, Value)
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