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//===-- llvm/Instructions.h - Instruction subclass definitions --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file exposes the class definitions of all of the subclasses of the
// Instruction class. This is meant to be an easy way to get access to all
// instruction subclasses.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_INSTRUCTIONS_H
#define LLVM_INSTRUCTIONS_H
#include <iterator>
#include "llvm/InstrTypes.h"
#include "llvm/DerivedTypes.h"
#include "llvm/ParameterAttributes.h"
namespace llvm {
class BasicBlock;
class ConstantInt;
class PointerType;
class VectorType;
class ConstantRange;
class APInt;
//===----------------------------------------------------------------------===//
// AllocationInst Class
//===----------------------------------------------------------------------===//
/// AllocationInst - This class is the common base class of MallocInst and
/// AllocaInst.
///
class AllocationInst : public UnaryInstruction {
protected:
AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
const std::string &Name = "", Instruction *InsertBefore = 0);
AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
const std::string &Name, BasicBlock *InsertAtEnd);
public:
// Out of line virtual method, so the vtable, etc. has a home.
virtual ~AllocationInst();
/// isArrayAllocation - Return true if there is an allocation size parameter
/// to the allocation instruction that is not 1.
///
bool isArrayAllocation() const;
/// getArraySize - Get the number of element allocated, for a simple
/// allocation of a single element, this will return a constant 1 value.
///
const Value *getArraySize() const { return getOperand(0); }
Value *getArraySize() { return getOperand(0); }
/// getType - Overload to return most specific pointer type
///
const PointerType *getType() const {
return reinterpret_cast<const PointerType*>(Instruction::getType());
}
/// getAllocatedType - Return the type that is being allocated by the
/// instruction.
///
const Type *getAllocatedType() const;
/// getAlignment - Return the alignment of the memory that is being allocated
/// by the instruction.
///
unsigned getAlignment() const { return (1u << SubclassData) >> 1; }
void setAlignment(unsigned Align);
virtual Instruction *clone() const = 0;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const AllocationInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Alloca ||
I->getOpcode() == Instruction::Malloc;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// MallocInst Class
//===----------------------------------------------------------------------===//
/// MallocInst - an instruction to allocated memory on the heap
///
class MallocInst : public AllocationInst {
MallocInst(const MallocInst &MI);
public:
explicit MallocInst(const Type *Ty, Value *ArraySize = 0,
const std::string &Name = "",
Instruction *InsertBefore = 0)
: AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertBefore) {}
MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name,
BasicBlock *InsertAtEnd)
: AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertAtEnd) {}
MallocInst(const Type *Ty, const std::string &Name,
Instruction *InsertBefore = 0)
: AllocationInst(Ty, 0, Malloc, 0, Name, InsertBefore) {}
MallocInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
: AllocationInst(Ty, 0, Malloc, 0, Name, InsertAtEnd) {}
MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
const std::string &Name, BasicBlock *InsertAtEnd)
: AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertAtEnd) {}
MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
const std::string &Name = "",
Instruction *InsertBefore = 0)
: AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertBefore) {}
virtual MallocInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const MallocInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Malloc);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// AllocaInst Class
//===----------------------------------------------------------------------===//
/// AllocaInst - an instruction to allocate memory on the stack
///
class AllocaInst : public AllocationInst {
AllocaInst(const AllocaInst &);
public:
explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
const std::string &Name = "",
Instruction *InsertBefore = 0)
: AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertBefore) {}
AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name,
BasicBlock *InsertAtEnd)
: AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertAtEnd) {}
AllocaInst(const Type *Ty, const std::string &Name,
Instruction *InsertBefore = 0)
: AllocationInst(Ty, 0, Alloca, 0, Name, InsertBefore) {}
AllocaInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
: AllocationInst(Ty, 0, Alloca, 0, Name, InsertAtEnd) {}
AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
const std::string &Name = "", Instruction *InsertBefore = 0)
: AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertBefore) {}
AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
const std::string &Name, BasicBlock *InsertAtEnd)
: AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertAtEnd) {}
virtual AllocaInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const AllocaInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Alloca);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FreeInst Class
//===----------------------------------------------------------------------===//
/// FreeInst - an instruction to deallocate memory
///
class FreeInst : public UnaryInstruction {
void AssertOK();
public:
explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
FreeInst(Value *Ptr, BasicBlock *InsertAfter);
virtual FreeInst *clone() const;
// Accessor methods for consistency with other memory operations
Value *getPointerOperand() { return getOperand(0); }
const Value *getPointerOperand() const { return getOperand(0); }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FreeInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Free);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// LoadInst Class
//===----------------------------------------------------------------------===//
/// LoadInst - an instruction for reading from memory. This uses the
/// SubclassData field in Value to store whether or not the load is volatile.
///
class LoadInst : public UnaryInstruction {
LoadInst(const LoadInst &LI)
: UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
setVolatile(LI.isVolatile());
setAlignment(LI.getAlignment());
#ifndef NDEBUG
AssertOK();
#endif
}
void AssertOK();
public:
LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, unsigned Align,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, unsigned Align,
BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const char *Name, Instruction *InsertBefore);
LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAtEnd);
explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const char *Name, bool isVolatile,
BasicBlock *InsertAtEnd);
/// isVolatile - Return true if this is a load from a volatile memory
/// location.
///
bool isVolatile() const { return SubclassData & 1; }
/// setVolatile - Specify whether this is a volatile load or not.
///
void setVolatile(bool V) {
SubclassData = (SubclassData & ~1) | (V ? 1 : 0);
}
virtual LoadInst *clone() const;
/// getAlignment - Return the alignment of the access that is being performed
///
unsigned getAlignment() const {
return (1 << (SubclassData>>1)) >> 1;
}
void setAlignment(unsigned Align);
Value *getPointerOperand() { return getOperand(0); }
const Value *getPointerOperand() const { return getOperand(0); }
static unsigned getPointerOperandIndex() { return 0U; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const LoadInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Load;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// StoreInst Class
//===----------------------------------------------------------------------===//
/// StoreInst - an instruction for storing to memory
///
class StoreInst : public Instruction {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
Use Ops[2];
StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
Ops[0].init(SI.Ops[0], this);
Ops[1].init(SI.Ops[1], this);
setVolatile(SI.isVolatile());
setAlignment(SI.getAlignment());
#ifndef NDEBUG
AssertOK();
#endif
}
void AssertOK();
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
Instruction *InsertBefore = 0);
StoreInst(Value *Val, Value *Ptr, bool isVolatile,
unsigned Align, Instruction *InsertBefore = 0);
StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
StoreInst(Value *Val, Value *Ptr, bool isVolatile,
unsigned Align, BasicBlock *InsertAtEnd);
/// isVolatile - Return true if this is a load from a volatile memory
/// location.
///
bool isVolatile() const { return SubclassData & 1; }
/// setVolatile - Specify whether this is a volatile load or not.
///
void setVolatile(bool V) {
SubclassData = (SubclassData & ~1) | (V ? 1 : 0);
}
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
assert(i < 2 && "getOperand() out of range!");
return Ops[i];
}
void setOperand(unsigned i, Value *Val) {
assert(i < 2 && "setOperand() out of range!");
Ops[i] = Val;
}
unsigned getNumOperands() const { return 2; }
/// getAlignment - Return the alignment of the access that is being performed
///
unsigned getAlignment() const {
return (1 << (SubclassData>>1)) >> 1;
}
void setAlignment(unsigned Align);
virtual StoreInst *clone() const;
Value *getPointerOperand() { return getOperand(1); }
const Value *getPointerOperand() const { return getOperand(1); }
static unsigned getPointerOperandIndex() { return 1U; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const StoreInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Store;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// GetElementPtrInst Class
//===----------------------------------------------------------------------===//
// checkType - Simple wrapper function to give a better assertion failure
// message on bad indexes for a gep instruction.
//
static inline const Type *checkType(const Type *Ty) {
assert(Ty && "Invalid GetElementPtrInst indices for type!");
return Ty;
}
/// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
/// access elements of arrays and structs
///
class GetElementPtrInst : public Instruction {
GetElementPtrInst(const GetElementPtrInst &GEPI)
: Instruction(reinterpret_cast<const Type*>(GEPI.getType()), GetElementPtr,
0, GEPI.getNumOperands()) {
Use *OL = OperandList = new Use[NumOperands];
Use *GEPIOL = GEPI.OperandList;
for (unsigned i = 0, E = NumOperands; i != E; ++i)
OL[i].init(GEPIOL[i], this);
}
void init(Value *Ptr, Value* const *Idx, unsigned NumIdx);
void init(Value *Ptr, Value *Idx);
template<typename InputIterator>
void init(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
const std::string &Name,
// This argument ensures that we have an iterator we can
// do arithmetic on in constant time
std::random_access_iterator_tag) {
unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
if (NumIdx > 0) {
// This requires that the itoerator points to contiguous memory.
init(Ptr, &*IdxBegin, NumIdx);
}
else {
init(Ptr, 0, NumIdx);
}
setName(Name);
}
/// getIndexedType - Returns the type of the element that would be loaded with
/// a load instruction with the specified parameters.
///
/// A null type is returned if the indices are invalid for the specified
/// pointer type.
///
static const Type *getIndexedType(const Type *Ptr,
Value* const *Idx, unsigned NumIdx,
bool AllowStructLeaf = false);
template<typename InputIterator>
static const Type *getIndexedType(const Type *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
bool AllowStructLeaf,
// This argument ensures that we
// have an iterator we can do
// arithmetic on in constant time
std::random_access_iterator_tag) {
unsigned NumIdx = static_cast<unsigned>(std::distance(IdxBegin, IdxEnd));
if (NumIdx > 0) {
// This requires that the iterator points to contiguous memory.
return(getIndexedType(Ptr, (Value *const *)&*IdxBegin, NumIdx,
AllowStructLeaf));
}
else {
return(getIndexedType(Ptr, (Value *const*)0, NumIdx, AllowStructLeaf));
}
}
/// Constructors - Create a getelementptr instruction with a base pointer an
/// list of indices. The first ctor can optionally insert before an existing
/// instruction, the second appends the new instruction to the specified
/// BasicBlock.
template<typename InputIterator>
GetElementPtrInst(Value *Ptr, InputIterator IdxBegin,
InputIterator IdxEnd,
const std::string &Name = "",
Instruction *InsertBefore = 0)
: Instruction(PointerType::get(
checkType(getIndexedType(Ptr->getType(),
IdxBegin, IdxEnd, true)),
cast<PointerType>(Ptr->getType())->getAddressSpace()),
GetElementPtr, 0, 0, InsertBefore) {
init(Ptr, IdxBegin, IdxEnd, Name,
typename std::iterator_traits<InputIterator>::iterator_category());
}
template<typename InputIterator>
GetElementPtrInst(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
const std::string &Name, BasicBlock *InsertAtEnd)
: Instruction(PointerType::get(
checkType(getIndexedType(Ptr->getType(),
IdxBegin, IdxEnd, true)),
cast<PointerType>(Ptr->getType())->getAddressSpace()),
GetElementPtr, 0, 0, InsertAtEnd) {
init(Ptr, IdxBegin, IdxEnd, Name,
typename std::iterator_traits<InputIterator>::iterator_category());
}
/// Constructors - These two constructors are convenience methods because one
/// and two index getelementptr instructions are so common.
GetElementPtrInst(Value *Ptr, Value *Idx,
const std::string &Name = "", Instruction *InsertBefore = 0);
GetElementPtrInst(Value *Ptr, Value *Idx,
const std::string &Name, BasicBlock *InsertAtEnd);
public:
template<typename InputIterator>
static GetElementPtrInst *Create(Value *Ptr, InputIterator IdxBegin,
InputIterator IdxEnd,
const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new(0/*FIXME*/) GetElementPtrInst(Ptr, IdxBegin, IdxEnd, Name, InsertBefore);
}
template<typename InputIterator>
static GetElementPtrInst *Create(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
const std::string &Name, BasicBlock *InsertAtEnd) {
return new(0/*FIXME*/) GetElementPtrInst(Ptr, IdxBegin, IdxEnd, Name, InsertAtEnd);
}
/// Constructors - These two constructors are convenience methods because one
/// and two index getelementptr instructions are so common.
static GetElementPtrInst *Create(Value *Ptr, Value *Idx,
const std::string &Name = "", Instruction *InsertBefore = 0) {
return new(2/*FIXME*/) GetElementPtrInst(Ptr, Idx, Name, InsertBefore);
}
static GetElementPtrInst *Create(Value *Ptr, Value *Idx,
const std::string &Name, BasicBlock *InsertAtEnd) {
return new(2/*FIXME*/) GetElementPtrInst(Ptr, Idx, Name, InsertAtEnd);
}
~GetElementPtrInst();
virtual GetElementPtrInst *clone() const;
// getType - Overload to return most specific pointer type...
const PointerType *getType() const {
return reinterpret_cast<const PointerType*>(Instruction::getType());
}
/// getIndexedType - Returns the type of the element that would be loaded with
/// a load instruction with the specified parameters.
///
/// A null type is returned if the indices are invalid for the specified
/// pointer type.
///
template<typename InputIterator>
static const Type *getIndexedType(const Type *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
bool AllowStructLeaf = false) {
return(getIndexedType(Ptr, IdxBegin, IdxEnd, AllowStructLeaf,
typename std::iterator_traits<InputIterator>::
iterator_category()));
}
static const Type *getIndexedType(const Type *Ptr, Value *Idx);
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
}
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;
/// 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;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const GetElementPtrInst *) { return true; }
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));
}
};
//===----------------------------------------------------------------------===//
// ICmpInst Class
//===----------------------------------------------------------------------===//
/// This instruction compares its operands according to the predicate given
/// to the constructor. It only operates on integers, pointers, or packed
/// vectors of integrals. The two operands must be the same type.
/// @brief Represent an integer comparison operator.
class ICmpInst: public CmpInst {
public:
/// This enumeration lists the possible predicates for the ICmpInst. The
/// 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 {
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
};
/// @brief Constructor with insert-before-instruction semantics.
ICmpInst(
Predicate pred, ///< The predicate to use for the comparison
Value *LHS, ///< The left-hand-side of the expression
Value *RHS, ///< The right-hand-side of the expression
const std::string &Name = "", ///< Name of the instruction
Instruction *InsertBefore = 0 ///< Where to insert
) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertBefore) {
}
/// @brief Constructor with insert-at-block-end semantics.
ICmpInst(
Predicate pred, ///< The predicate to use for the comparison
Value *LHS, ///< The left-hand-side of the expression
Value *RHS, ///< The right-hand-side of the expression
const std::string &Name, ///< Name of the instruction
BasicBlock *InsertAtEnd ///< Block to insert into.
) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertAtEnd) {
}
/// @brief Return the predicate for this instruction.
Predicate getPredicate() const { return Predicate(SubclassData); }
/// @brief Set the predicate for this instruction to the specified value.
void setPredicate(Predicate P) { SubclassData = P; }
/// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
/// @returns the inverse predicate for the instruction's current predicate.
/// @brief Return the inverse of the instruction's predicate.
Predicate getInversePredicate() const {
return getInversePredicate(getPredicate());
}
/// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
/// @returns the inverse predicate for predicate provided in \p pred.
/// @brief Return the inverse of a given predicate
static Predicate getInversePredicate(Predicate pred);
/// For example, EQ->EQ, SLE->SGE, ULT->UGT, etc.
/// @returns the predicate that would be the result of exchanging the two
/// operands of the ICmpInst instruction without changing the result
/// produced.
/// @brief Return the predicate as if the operands were swapped
Predicate getSwappedPredicate() const {
return getSwappedPredicate(getPredicate());
}
/// This is a static version that you can use without an instruction
/// available.
/// @brief Return the predicate as if the operands were swapped.
static Predicate getSwappedPredicate(Predicate pred);
/// For example, EQ->EQ, SLE->SLE, UGT->SGT, etc.
/// @returns the predicate that would be the result if the operand were
/// regarded as signed.
/// @brief Return the signed version of the predicate
Predicate getSignedPredicate() const {
return getSignedPredicate(getPredicate());
}
/// This is a static version that you can use without an instruction.
/// @brief Return the signed version of the predicate.
static Predicate getSignedPredicate(Predicate pred);
/// For example, EQ->EQ, SLE->ULE, UGT->UGT, etc.
/// @returns the predicate that would be the result if the operand were
/// regarded as unsigned.
/// @brief Return the unsigned version of the predicate
Predicate getUnsignedPredicate() const {
return getUnsignedPredicate(getPredicate());
}
/// This is a static version that you can use without an instruction.
/// @brief Return the unsigned version of the predicate.
static Predicate getUnsignedPredicate(Predicate pred);
/// isEquality - Return true if this predicate is either EQ or NE. This also
/// tests for commutativity.
static bool isEquality(Predicate P) {
return P == ICMP_EQ || P == ICMP_NE;
}
/// isEquality - Return true if this predicate is either EQ or NE. This also
/// tests for commutativity.
bool isEquality() const {
return isEquality(getPredicate());
}
/// @returns true if the predicate of this ICmpInst is commutative
/// @brief Determine if this relation is commutative.
bool isCommutative() const { return isEquality(); }
/// isRelational - Return true if the predicate is relational (not EQ or NE).
///
bool isRelational() const {
return !isEquality();
}
/// isRelational - Return true if the predicate is relational (not EQ or NE).
///
static bool isRelational(Predicate P) {
return !isEquality(P);
}
/// @returns true if the predicate of this ICmpInst is signed, false otherwise
/// @brief Determine if this instruction's predicate is signed.
bool isSignedPredicate() const { return isSignedPredicate(getPredicate()); }
/// @returns true if the predicate provided is signed, false otherwise
/// @brief Determine if the predicate is signed.
static bool isSignedPredicate(Predicate pred);
/// Initialize a set of values that all satisfy the predicate with C.
/// @brief Make a ConstantRange for a relation with a constant value.
static ConstantRange makeConstantRange(Predicate pred, const APInt &C);
/// Exchange the two operands to this instruction in such a way that it does
/// not modify the semantics of the instruction. The predicate value may be
/// changed to retain the same result if the predicate is order dependent
/// (e.g. ult).
/// @brief Swap operands and adjust predicate.
void swapOperands() {
SubclassData = getSwappedPredicate();
std::swap(Ops[0], Ops[1]);
}
virtual ICmpInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ICmpInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::ICmp;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FCmpInst Class
//===----------------------------------------------------------------------===//
/// This instruction compares its operands according to the predicate given
/// to the constructor. It only operates on floating point values or packed
/// vectors of floating point values. The operands must be identical types.
/// @brief Represents a floating point comparison operator.
class FCmpInst: public CmpInst {
public:
/// This enumeration lists the possible predicates for the FCmpInst. Values
/// in the range 0-31 are reserved for FCmpInst.
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)
FIRST_FCMP_PREDICATE = FCMP_FALSE,
LAST_FCMP_PREDICATE = FCMP_TRUE,
BAD_FCMP_PREDICATE = FCMP_TRUE + 1
};
/// @brief Constructor with insert-before-instruction semantics.
FCmpInst(
Predicate pred, ///< The predicate to use for the comparison
Value *LHS, ///< The left-hand-side of the expression
Value *RHS, ///< The right-hand-side of the expression
const std::string &Name = "", ///< Name of the instruction
Instruction *InsertBefore = 0 ///< Where to insert
) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertBefore) {
}
/// @brief Constructor with insert-at-block-end semantics.
FCmpInst(
Predicate pred, ///< The predicate to use for the comparison
Value *LHS, ///< The left-hand-side of the expression
Value *RHS, ///< The right-hand-side of the expression
const std::string &Name, ///< Name of the instruction
BasicBlock *InsertAtEnd ///< Block to insert into.
) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertAtEnd) {
}
/// @brief Return the predicate for this instruction.
Predicate getPredicate() const { return Predicate(SubclassData); }
/// @brief Set the predicate for this instruction to the specified value.
void setPredicate(Predicate P) { SubclassData = P; }
/// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
/// @returns the inverse predicate for the instructions current predicate.
/// @brief Return the inverse of the predicate
Predicate getInversePredicate() const {
return getInversePredicate(getPredicate());
}
/// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
/// @returns the inverse predicate for \p pred.
/// @brief Return the inverse of a given predicate
static Predicate getInversePredicate(Predicate pred);
/// For example, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
/// @returns the predicate that would be the result of exchanging the two
/// operands of the ICmpInst instruction without changing the result
/// produced.
/// @brief Return the predicate as if the operands were swapped
Predicate getSwappedPredicate() const {
return getSwappedPredicate(getPredicate());
}
/// This is a static version that you can use without an instruction
/// available.
/// @brief Return the predicate as if the operands were swapped.
static Predicate getSwappedPredicate(Predicate Opcode);
/// This also tests for commutativity. If isEquality() returns true then
/// the predicate is also commutative. Only the equality predicates are
/// commutative.
/// @returns true if the predicate of this instruction is EQ or NE.
/// @brief Determine if this is an equality predicate.
bool isEquality() const {
return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
}
bool isCommutative() const { return isEquality(); }
/// @returns true if the predicate is relational (not EQ or NE).
/// @brief Determine if this a relational predicate.
bool isRelational() const { return !isEquality(); }
/// Exchange the two operands to this instruction in such a way that it does
/// not modify the semantics of the instruction. The predicate value may be
/// changed to retain the same result if the predicate is order dependent
/// (e.g. ult).
/// @brief Swap operands and adjust predicate.
void swapOperands() {
SubclassData = getSwappedPredicate();
std::swap(Ops[0], Ops[1]);
}
virtual FCmpInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FCmpInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::FCmp;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// CallInst Class
//===----------------------------------------------------------------------===//
/// CallInst - This class represents a function call, abstracting a target
/// machine's calling convention. This class uses low bit of the SubClassData
/// field to indicate whether or not this is a tail call. The rest of the bits
/// hold the calling convention of the call.
///
class CallInst : public Instruction {
PAListPtr ParamAttrs; ///< parameter attributes for call
CallInst(const CallInst &CI);
void init(Value *Func, Value* const *Params, unsigned NumParams);
void init(Value *Func, Value *Actual1, Value *Actual2);
void init(Value *Func, Value *Actual);
void init(Value *Func);
template<typename InputIterator>
void init(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name,
// This argument ensures that we have an iterator we can
// do arithmetic on in constant time
std::random_access_iterator_tag) {
unsigned NumArgs = (unsigned)std::distance(ArgBegin, ArgEnd);
// This requires that the iterator points to contiguous memory.
init(Func, NumArgs ? &*ArgBegin : 0, NumArgs);
setName(Name);
}
/// Construct a CallInst given a range of arguments. InputIterator
/// must be a random-access iterator pointing to contiguous storage
/// (e.g. a std::vector<>::iterator). Checks are made for
/// random-accessness but not for contiguous storage as that would
/// incur runtime overhead.
/// @brief Construct a CallInst from a range of arguments
template<typename InputIterator>
CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name = "", Instruction *InsertBefore = 0)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call, 0, 0, InsertBefore) {
init(Func, ArgBegin, ArgEnd, Name,
typename std::iterator_traits<InputIterator>::iterator_category());
}
/// Construct a CallInst given a range of arguments. InputIterator
/// must be a random-access iterator pointing to contiguous storage
/// (e.g. a std::vector<>::iterator). Checks are made for
/// random-accessness but not for contiguous storage as that would
/// incur runtime overhead.
/// @brief Construct a CallInst from a range of arguments
template<typename InputIterator>
CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name, BasicBlock *InsertAtEnd)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call, 0, 0, InsertAtEnd) {
init(Func, ArgBegin, ArgEnd, Name,
typename std::iterator_traits<InputIterator>::iterator_category());
}
CallInst(Value *F, Value *Actual, const std::string& Name = "",
Instruction *InsertBefore = 0);
CallInst(Value *F, Value *Actual, const std::string& Name,
BasicBlock *InsertAtEnd);
explicit CallInst(Value *F, const std::string &Name = "",
Instruction *InsertBefore = 0);
CallInst(Value *F, const std::string &Name, BasicBlock *InsertAtEnd);
public:
template<typename InputIterator>
static CallInst *Create(Value *Func, InputIterator ArgBegin,
InputIterator ArgEnd,
const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new(ArgEnd - ArgBegin + 1)
CallInst(Func, ArgBegin, ArgEnd, Name, InsertBefore);
}
template<typename InputIterator>
static CallInst *Create(Value *Func, InputIterator ArgBegin,
InputIterator ArgEnd, const std::string &Name,
BasicBlock *InsertAtEnd) {
return new(ArgEnd - ArgBegin + 1)
CallInst(Func, ArgBegin, ArgEnd, Name, InsertAtEnd);
}
static CallInst *Create(Value *F, Value *Actual, const std::string& Name = "",
Instruction *InsertBefore = 0) {
return new(2) CallInst(F, Actual, Name, InsertBefore);
}
static CallInst *Create(Value *F, Value *Actual, const std::string& Name,
BasicBlock *InsertAtEnd) {
return new(2) CallInst(F, Actual, Name, InsertAtEnd);
}
static CallInst *Create(Value *F, const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new(1) CallInst(F, Name, InsertBefore);
}
static CallInst *Create(Value *F, const std::string &Name,
BasicBlock *InsertAtEnd) {
return new(1) CallInst(F, Name, InsertAtEnd);
}
~CallInst();
virtual CallInst *clone() const;
bool isTailCall() const { return SubclassData & 1; }
void setTailCall(bool isTailCall = true) {
SubclassData = (SubclassData & ~1) | unsigned(isTailCall);
}
/// getCallingConv/setCallingConv - Get or set the calling convention of this
/// function call.
unsigned getCallingConv() const { return SubclassData >> 1; }
void setCallingConv(unsigned CC) {
SubclassData = (SubclassData & 1) | (CC << 1);
}
/// getParamAttrs - Return the parameter attributes for this call.
///
const PAListPtr &getParamAttrs() const { return ParamAttrs; }
/// setParamAttrs - Sets the parameter attributes for this call.
void setParamAttrs(const PAListPtr &Attrs) { ParamAttrs = Attrs; }
/// @brief Determine whether the call or the callee has the given attribute.
bool paramHasAttr(unsigned i, unsigned attr) const;
/// @brief Extract the alignment for a call or parameter (0=unknown).
unsigned getParamAlignment(unsigned i) const {
return ParamAttrs.getParamAlignment(i);
}
/// @brief Determine if the call does not access memory.
bool doesNotAccessMemory() const {
return paramHasAttr(0, ParamAttr::ReadNone);
}
/// @brief Determine if the call does not access or only reads memory.
bool onlyReadsMemory() const {
return doesNotAccessMemory() || paramHasAttr(0, ParamAttr::ReadOnly);
}
/// @brief Determine if the call cannot return.
bool doesNotReturn() const {
return paramHasAttr(0, ParamAttr::NoReturn);
}
/// @brief Determine if the call cannot unwind.
bool doesNotThrow() const {
return paramHasAttr(0, ParamAttr::NoUnwind);
}
void setDoesNotThrow(bool doesNotThrow = true);
/// @brief Determine if the call returns a structure through first
/// pointer argument.
bool hasStructRetAttr() const {
// Be friendly and also check the callee.
return paramHasAttr(1, ParamAttr::StructRet);
}
/// @brief Determine if any call argument is an aggregate passed by value.
bool hasByValArgument() const {
return ParamAttrs.hasAttrSomewhere(ParamAttr::ByVal);
}
/// getCalledFunction - Return the function being called by this instruction
/// if it is a direct call. If it is a call through a function pointer,
/// return null.
Function *getCalledFunction() const {
return dyn_cast<Function>(getOperand(0));
}
/// getCalledValue - Get a pointer to the function that is invoked by this
/// instruction
const Value *getCalledValue() const { return getOperand(0); }
Value *getCalledValue() { return getOperand(0); }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const CallInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Call;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// SelectInst Class
//===----------------------------------------------------------------------===//
/// SelectInst - This class represents the LLVM 'select' instruction.
///
class SelectInst : public Instruction {
Use Ops[3];
void init(Value *C, Value *S1, Value *S2) {
Ops[0].init(C, this);
Ops[1].init(S1, this);
Ops[2].init(S2, this);
}
SelectInst(const SelectInst &SI)
: Instruction(SI.getType(), SI.getOpcode(), Ops, 3) {
init(SI.Ops[0], SI.Ops[1], SI.Ops[2]);
}
SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "",
Instruction *InsertBefore = 0)
: Instruction(S1->getType(), Instruction::Select, Ops, 3, InsertBefore) {
init(C, S1, S2);
setName(Name);
}
SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name,
BasicBlock *InsertAtEnd)
: Instruction(S1->getType(), Instruction::Select, Ops, 3, InsertAtEnd) {
init(C, S1, S2);
setName(Name);
}
public:
static SelectInst *Create(Value *C, Value *S1, Value *S2,
const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new(3) SelectInst(C, S1, S2, Name, InsertBefore);
}
static SelectInst *Create(Value *C, Value *S1, Value *S2,
const std::string &Name, BasicBlock *InsertAtEnd) {
return new(3) SelectInst(C, S1, S2, Name, InsertAtEnd);
}
Value *getCondition() const { return Ops[0]; }
Value *getTrueValue() const { return Ops[1]; }
Value *getFalseValue() const { return Ops[2]; }
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
assert(i < 3 && "getOperand() out of range!");
return Ops[i];
}
void setOperand(unsigned i, Value *Val) {
assert(i < 3 && "setOperand() out of range!");
Ops[i] = Val;
}
unsigned getNumOperands() const { return 3; }
OtherOps getOpcode() const {
return static_cast<OtherOps>(Instruction::getOpcode());
}
virtual SelectInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const SelectInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Select;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// VAArgInst Class
//===----------------------------------------------------------------------===//
/// VAArgInst - This class represents the va_arg llvm instruction, which returns
/// an argument of the specified type given a va_list and increments that list
///
class VAArgInst : public UnaryInstruction {
VAArgInst(const VAArgInst &VAA)
: UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {}
public:
VAArgInst(Value *List, const Type *Ty, const std::string &Name = "",
Instruction *InsertBefore = 0)
: UnaryInstruction(Ty, VAArg, List, InsertBefore) {
setName(Name);
}
VAArgInst(Value *List, const Type *Ty, const std::string &Name,
BasicBlock *InsertAtEnd)
: UnaryInstruction(Ty, VAArg, List, InsertAtEnd) {
setName(Name);
}
virtual VAArgInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const VAArgInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == VAArg;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// ExtractElementInst Class
//===----------------------------------------------------------------------===//
/// ExtractElementInst - This instruction extracts a single (scalar)
/// element from a VectorType value
///
class ExtractElementInst : public Instruction {
Use Ops[2];
ExtractElementInst(const ExtractElementInst &EE) :
Instruction(EE.getType(), ExtractElement, Ops, 2) {
Ops[0].init(EE.Ops[0], this);
Ops[1].init(EE.Ops[1], this);
}
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2); // FIXME: unsigned Idx forms of constructor?
}
ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name = "",
Instruction *InsertBefore = 0);
ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name = "",
Instruction *InsertBefore = 0);
ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name,
BasicBlock *InsertAtEnd);
ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name,
BasicBlock *InsertAtEnd);
/// isValidOperands - Return true if an extractelement instruction can be
/// formed with the specified operands.
static bool isValidOperands(const Value *Vec, const Value *Idx);
virtual ExtractElementInst *clone() const;
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
assert(i < 2 && "getOperand() out of range!");
return Ops[i];
}
void setOperand(unsigned i, Value *Val) {
assert(i < 2 && "setOperand() out of range!");
Ops[i] = Val;
}
unsigned getNumOperands() const { return 2; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ExtractElementInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::ExtractElement;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// InsertElementInst Class
//===----------------------------------------------------------------------===//
/// InsertElementInst - This instruction inserts a single (scalar)
/// element into a VectorType value
///
class InsertElementInst : public Instruction {
Use Ops[3];
InsertElementInst(const InsertElementInst &IE);
InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
const std::string &Name = "",Instruction *InsertBefore = 0);
InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
const std::string &Name = "",Instruction *InsertBefore = 0);
InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
const std::string &Name, BasicBlock *InsertAtEnd);
InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
const std::string &Name, BasicBlock *InsertAtEnd);
public:
static InsertElementInst *Create(const InsertElementInst &IE) {
return new(IE.getNumOperands()) InsertElementInst(IE);
}
static InsertElementInst *Create(Value *Vec, Value *NewElt, Value *Idx,
const std::string &Name = "",Instruction *InsertBefore = 0) {
return new(3) InsertElementInst(Vec, NewElt, Idx, Name, InsertBefore);
}
static InsertElementInst *Create(Value *Vec, Value *NewElt, unsigned Idx,
const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new(3/*FIXME*/)
InsertElementInst(Vec, NewElt, Idx, Name, InsertBefore);
}
static InsertElementInst *Create(Value *Vec, Value *NewElt, Value *Idx,
const std::string &Name,
BasicBlock *InsertAtEnd) {
return new(3) InsertElementInst(Vec, NewElt, Idx, Name, InsertAtEnd);
}
static InsertElementInst *Create(Value *Vec, Value *NewElt, unsigned Idx,
const std::string &Name,
BasicBlock *InsertAtEnd) {
return new(3/*FIXME*/)
InsertElementInst(Vec, NewElt, Idx, Name, InsertAtEnd);
}
/// isValidOperands - Return true if an insertelement instruction can be
/// formed with the specified operands.
static bool isValidOperands(const Value *Vec, const Value *NewElt,
const Value *Idx);
virtual InsertElementInst *clone() const;
/// getType - Overload to return most specific vector type.
///
const VectorType *getType() const {
return reinterpret_cast<const VectorType*>(Instruction::getType());
}
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
assert(i < 3 && "getOperand() out of range!");
return Ops[i];
}
void setOperand(unsigned i, Value *Val) {
assert(i < 3 && "setOperand() out of range!");
Ops[i] = Val;
}
unsigned getNumOperands() const { return 3; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const InsertElementInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::InsertElement;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// ShuffleVectorInst Class
//===----------------------------------------------------------------------===//
/// ShuffleVectorInst - This instruction constructs a fixed permutation of two
/// input vectors.
///
class ShuffleVectorInst : public Instruction {
Use Ops[3];
ShuffleVectorInst(const ShuffleVectorInst &IE);
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
const std::string &Name = "", Instruction *InsertBefor = 0);
ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
const std::string &Name, BasicBlock *InsertAtEnd);
/// isValidOperands - Return true if a shufflevector instruction can be
/// formed with the specified operands.
static bool isValidOperands(const Value *V1, const Value *V2,
const Value *Mask);
virtual ShuffleVectorInst *clone() const;
/// getType - Overload to return most specific vector type.
///
const VectorType *getType() const {
return reinterpret_cast<const VectorType*>(Instruction::getType());
}
/// Transparently provide more efficient getOperand methods.
const Value *getOperand(unsigned i) const {
assert(i < 3 && "getOperand() out of range!");
return Ops[i];
}
Value *getOperand(unsigned i) {
assert(i < 3 && "getOperand() out of range!");
return Ops[i];
}
void setOperand(unsigned i, Value *Val) {
assert(i < 3 && "setOperand() out of range!");
Ops[i] = Val;
}
unsigned getNumOperands() const { return 3; }
/// getMaskValue - Return the index from the shuffle mask for the specified
/// output result. This is either -1 if the element is undef or a number less
/// than 2*numelements.
int getMaskValue(unsigned i) const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ShuffleVectorInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::ShuffleVector;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// PHINode Class
//===----------------------------------------------------------------------===//
// PHINode - The PHINode class is used to represent the magical mystical PHI
// node, that can not exist in nature, but can be synthesized in a computer
// scientist's overactive imagination.
//
class PHINode : public Instruction {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
/// ReservedSpace - The number of operands actually allocated. NumOperands is
/// the number actually in use.
unsigned ReservedSpace;
PHINode(const PHINode &PN);
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
explicit PHINode(const Type *Ty, const std::string &Name = "",
Instruction *InsertBefore = 0)
: Instruction(Ty, Instruction::PHI, 0, 0, InsertBefore),
ReservedSpace(0) {
setName(Name);
}
PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
: Instruction(Ty, Instruction::PHI, 0, 0, InsertAtEnd),
ReservedSpace(0) {
setName(Name);
}
public:
static PHINode *Create(const Type *Ty, const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new PHINode(Ty, Name, InsertBefore);
}
static PHINode *Create(const Type *Ty, const std::string &Name,
BasicBlock *InsertAtEnd) {
return new PHINode(Ty, Name, InsertAtEnd);
}
~PHINode();
/// reserveOperandSpace - This method can be used to avoid repeated
/// reallocation of PHI operand lists by reserving space for the correct
/// number of operands before adding them. Unlike normal vector reserves,
/// this method can also be used to trim the operand space.
void reserveOperandSpace(unsigned NumValues) {
resizeOperands(NumValues*2);
}
virtual PHINode *clone() const;
/// getNumIncomingValues - Return the number of incoming edges
///
unsigned getNumIncomingValues() const { return getNumOperands()/2; }
/// getIncomingValue - Return incoming value number x
///
Value *getIncomingValue(unsigned i) const {
assert(i*2 < getNumOperands() && "Invalid value number!");
return getOperand(i*2);
}
void setIncomingValue(unsigned i, Value *V) {
assert(i*2 < getNumOperands() && "Invalid value number!");
setOperand(i*2, V);
}
unsigned getOperandNumForIncomingValue(unsigned i) {
return i*2;
}
/// getIncomingBlock - Return incoming basic block number x
///
BasicBlock *getIncomingBlock(unsigned i) const {
return reinterpret_cast<BasicBlock*>(getOperand(i*2+1));
}
void setIncomingBlock(unsigned i, BasicBlock *BB) {
setOperand(i*2+1, reinterpret_cast<Value*>(BB));
}
unsigned getOperandNumForIncomingBlock(unsigned i) {
return i*2+1;
}
/// addIncoming - Add an incoming value to the end of the PHI list
///
void addIncoming(Value *V, BasicBlock *BB) {
assert(V && "PHI node got a null value!");
assert(BB && "PHI node got a null basic block!");
assert(getType() == V->getType() &&
"All operands to PHI node must be the same type as the PHI node!");
unsigned OpNo = NumOperands;
if (OpNo+2 > ReservedSpace)
resizeOperands(0); // Get more space!
// Initialize some new operands.
NumOperands = OpNo+2;
OperandList[OpNo].init(V, this);
OperandList[OpNo+1].init(reinterpret_cast<Value*>(BB), this);
}
/// removeIncomingValue - Remove an incoming value. This is useful if a
/// predecessor basic block is deleted. The value removed is returned.
///
/// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty
/// is true), the PHI node is destroyed and any uses of it are replaced with
/// dummy values. The only time there should be zero incoming values to a PHI
/// node is when the block is dead, so this strategy is sound.
///
Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true);
Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty =true){
int Idx = getBasicBlockIndex(BB);
assert(Idx >= 0 && "Invalid basic block argument to remove!");
return removeIncomingValue(Idx, DeletePHIIfEmpty);
}
/// getBasicBlockIndex - Return the first index of the specified basic
/// block in the value list for this PHI. Returns -1 if no instance.
///
int getBasicBlockIndex(const BasicBlock *BB) const {
Use *OL = OperandList;
for (unsigned i = 0, e = getNumOperands(); i != e; i += 2)
if (OL[i+1] == reinterpret_cast<const Value*>(BB)) return i/2;
return -1;
}
Value *getIncomingValueForBlock(const BasicBlock *BB) const {
return getIncomingValue(getBasicBlockIndex(BB));
}
/// hasConstantValue - If the specified PHI node always merges together the
/// same value, return the value, otherwise return null.
///
Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const;
/// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const PHINode *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::PHI;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
void resizeOperands(unsigned NumOperands);
};
//===----------------------------------------------------------------------===//
// ReturnInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// ReturnInst - Return a value (possibly void), from a function. Execution
/// does not continue in this function any longer.
///
class ReturnInst : public TerminatorInst {
Use RetVal;
ReturnInst(const ReturnInst &RI);
void init(Value * const* retVals, unsigned N);
private:
// ReturnInst constructors:
// ReturnInst() - 'ret void' instruction
// ReturnInst( null) - 'ret void' instruction
// ReturnInst(Value* X) - 'ret X' instruction
// ReturnInst( null, Inst *) - 'ret void' instruction, insert before I
// ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I
// ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of BB
// ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of BB
// ReturnInst(Value* X, N) - 'ret X,X+1...X+N-1' instruction
// ReturnInst(Value* X, N, Inst *) - 'ret X,X+1...X+N-1', insert before I
// ReturnInst(Value* X, N, BB *) - 'ret X,X+1...X+N-1', insert @ end of BB
//
// NOTE: If the Value* passed is of type void then the constructor behaves as
// if it was passed NULL.
explicit ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0);
ReturnInst(Value *retVal, BasicBlock *InsertAtEnd);
ReturnInst(Value * const* retVals, unsigned N);
ReturnInst(Value * const* retVals, unsigned N, Instruction *InsertBefore);
ReturnInst(Value * const* retVals, unsigned N, BasicBlock *InsertAtEnd);
explicit ReturnInst(BasicBlock *InsertAtEnd);
public:
static ReturnInst* Create(Value *retVal = 0, Instruction *InsertBefore = 0) {
return new(!!retVal) ReturnInst(retVal, InsertBefore);
}
static ReturnInst* Create(Value *retVal, BasicBlock *InsertAtEnd) {
return new(!!retVal) ReturnInst(retVal, InsertAtEnd);
}
static ReturnInst* Create(Value * const* retVals, unsigned N) {
return new(N) ReturnInst(retVals, N);
}
static ReturnInst* Create(Value * const* retVals, unsigned N,
Instruction *InsertBefore) {
return new(N) ReturnInst(retVals, N, InsertBefore);
}
static ReturnInst* Create(Value * const* retVals, unsigned N,
BasicBlock *InsertAtEnd) {
return new(N) ReturnInst(retVals, N, InsertAtEnd);
}
static ReturnInst* Create(BasicBlock *InsertAtEnd) {
return new(0) ReturnInst(InsertAtEnd);
}
virtual ~ReturnInst();
virtual ReturnInst *clone() const;
Value *getOperand(unsigned n = 0) const {
if (getNumOperands() > 1)
return TerminatorInst::getOperand(n);
else
return RetVal;
}
Value *getReturnValue(unsigned n = 0) const {
return getOperand(n);
}
unsigned getNumSuccessors() const { return 0; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ReturnInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Ret);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
virtual BasicBlock *getSuccessorV(unsigned idx) const;
virtual unsigned getNumSuccessorsV() const;
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
};
//===----------------------------------------------------------------------===//
// BranchInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// BranchInst - Conditional or Unconditional Branch instruction.
///
class BranchInst : public TerminatorInst {
/// Ops list - Branches are strange. The operands are ordered:
/// TrueDest, FalseDest, Cond. This makes some accessors faster because
/// they don't have to check for cond/uncond branchness.
Use Ops[3];
BranchInst(const BranchInst &BI);
void AssertOK();
// BranchInst constructors (where {B, T, F} are blocks, and C is a condition):
// BranchInst(BB *B) - 'br B'
// BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F'
// BranchInst(BB* B, Inst *I) - 'br B' insert before I
// BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I
// BranchInst(BB* B, BB *I) - 'br B' insert at end
// BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end
explicit BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0);
BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
Instruction *InsertBefore = 0);
BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd);
BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
BasicBlock *InsertAtEnd);
public:
static BranchInst *Create(BasicBlock *IfTrue, Instruction *InsertBefore = 0) {
return new(1) BranchInst(IfTrue, InsertBefore);
}
static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
Instruction *InsertBefore = 0) {
return new(3) BranchInst(IfTrue, IfFalse, Cond, InsertBefore);
}
static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *InsertAtEnd) {
return new(1) BranchInst(IfTrue, InsertAtEnd);
}
static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
BasicBlock *InsertAtEnd) {
return new(3) BranchInst(IfTrue, IfFalse, Cond, InsertAtEnd);
}
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
assert(i < getNumOperands() && "getOperand() out of range!");
return Ops[i];
}
void setOperand(unsigned i, Value *Val) {
assert(i < getNumOperands() && "setOperand() out of range!");
Ops[i] = Val;
}
virtual BranchInst *clone() const;
bool isUnconditional() const { return getNumOperands() == 1; }
bool isConditional() const { return getNumOperands() == 3; }
Value *getCondition() const {
assert(isConditional() && "Cannot get condition of an uncond branch!");
return getOperand(2);
}
void setCondition(Value *V) {
assert(isConditional() && "Cannot set condition of unconditional branch!");
setOperand(2, V);
}
// setUnconditionalDest - Change the current branch to an unconditional branch
// targeting the specified block.
// FIXME: Eliminate this ugly method.
void setUnconditionalDest(BasicBlock *Dest) {
if (isConditional()) { // Convert this to an uncond branch.
NumOperands = 1;
Ops[1].set(0);
Ops[2].set(0);
}
setOperand(0, reinterpret_cast<Value*>(Dest));
}
unsigned getNumSuccessors() const { return 1+isConditional(); }
BasicBlock *getSuccessor(unsigned i) const {
assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
return cast<BasicBlock>(getOperand(i));
}
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
setOperand(idx, reinterpret_cast<Value*>(NewSucc));
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const BranchInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Br);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
virtual BasicBlock *getSuccessorV(unsigned idx) const;
virtual unsigned getNumSuccessorsV() const;
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
};
//===----------------------------------------------------------------------===//
// SwitchInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// SwitchInst - Multiway switch
///
class SwitchInst : public TerminatorInst {
unsigned ReservedSpace;
// Operand[0] = Value to switch on
// Operand[1] = Default basic block destination
// Operand[2n ] = Value to match
// Operand[2n+1] = BasicBlock to go to on match
SwitchInst(const SwitchInst &RI);
void init(Value *Value, BasicBlock *Default, unsigned NumCases);
void resizeOperands(unsigned No);
/// SwitchInst ctor - Create a new switch instruction, specifying a value to
/// switch on and a default destination. The number of additional cases can
/// be specified here to make memory allocation more efficient. This
/// constructor can also autoinsert before another instruction.
SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
Instruction *InsertBefore = 0);
/// SwitchInst ctor - Create a new switch instruction, specifying a value to
/// switch on and a default destination. The number of additional cases can
/// be specified here to make memory allocation more efficient. This
/// constructor also autoinserts at the end of the specified BasicBlock.
SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
BasicBlock *InsertAtEnd);
public:
static SwitchInst *Create(Value *Value, BasicBlock *Default, unsigned NumCases,
Instruction *InsertBefore = 0) {
return new(NumCases/*FIXME*/)
SwitchInst(Value, Default, NumCases, InsertBefore);
}
static SwitchInst *Create(Value *Value, BasicBlock *Default, unsigned NumCases,
BasicBlock *InsertAtEnd) {
return new(NumCases/*FIXME*/)
SwitchInst(Value, Default, NumCases, InsertAtEnd);
}
~SwitchInst();
// Accessor Methods for Switch stmt
Value *getCondition() const { return getOperand(0); }
void setCondition(Value *V) { setOperand(0, V); }
BasicBlock *getDefaultDest() const {
return cast<BasicBlock>(getOperand(1));
}
/// getNumCases - return the number of 'cases' in this switch instruction.
/// Note that case #0 is always the default case.
unsigned getNumCases() const {
return getNumOperands()/2;
}
/// getCaseValue - Return the specified case value. Note that case #0, the
/// default destination, does not have a case value.
ConstantInt *getCaseValue(unsigned i) {
assert(i && i < getNumCases() && "Illegal case value to get!");
return getSuccessorValue(i);
}
/// getCaseValue - Return the specified case value. Note that case #0, the
/// default destination, does not have a case value.
const ConstantInt *getCaseValue(unsigned i) const {
assert(i && i < getNumCases() && "Illegal case value to get!");
return getSuccessorValue(i);
}
/// findCaseValue - Search all of the case values for the specified constant.
/// If it is explicitly handled, return the case number of it, otherwise
/// return 0 to indicate that it is handled by the default handler.
unsigned findCaseValue(const ConstantInt *C) const {
for (unsigned i = 1, e = getNumCases(); i != e; ++i)
if (getCaseValue(i) == C)
return i;
return 0;
}
/// findCaseDest - Finds the unique case value for a given successor. Returns
/// null if the successor is not found, not unique, or is the default case.
ConstantInt *findCaseDest(BasicBlock *BB) {
if (BB == getDefaultDest()) return NULL;
ConstantInt *CI = NULL;
for (unsigned i = 1, e = getNumCases(); i != e; ++i) {
if (getSuccessor(i) == BB) {
if (CI) return NULL; // Multiple cases lead to BB.
else CI = getCaseValue(i);
}
}
return CI;
}
/// addCase - Add an entry to the switch instruction...
///
void addCase(ConstantInt *OnVal, BasicBlock *Dest);
/// removeCase - This method removes the specified successor from the switch
/// instruction. Note that this cannot be used to remove the default
/// destination (successor #0).
///
void removeCase(unsigned idx);
virtual SwitchInst *clone() const;
unsigned getNumSuccessors() const { return getNumOperands()/2; }
BasicBlock *getSuccessor(unsigned idx) const {
assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
return cast<BasicBlock>(getOperand(idx*2+1));
}
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
setOperand(idx*2+1, reinterpret_cast<Value*>(NewSucc));
}
// getSuccessorValue - Return the value associated with the specified
// successor.
ConstantInt *getSuccessorValue(unsigned idx) const {
assert(idx < getNumSuccessors() && "Successor # out of range!");
return reinterpret_cast<ConstantInt*>(getOperand(idx*2));
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const SwitchInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Switch;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
virtual BasicBlock *getSuccessorV(unsigned idx) const;
virtual unsigned getNumSuccessorsV() const;
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
};
//===----------------------------------------------------------------------===//
// InvokeInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
/// calling convention of the call.
///
class InvokeInst : public TerminatorInst {
PAListPtr ParamAttrs;
InvokeInst(const InvokeInst &BI);
void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
Value* const *Args, unsigned NumArgs);
template<typename InputIterator>
void init(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name,
// This argument ensures that we have an iterator we can
// do arithmetic on in constant time
std::random_access_iterator_tag) {
unsigned NumArgs = (unsigned)std::distance(ArgBegin, ArgEnd);
// This requires that the iterator points to contiguous memory.
init(Func, IfNormal, IfException, NumArgs ? &*ArgBegin : 0, NumArgs);
setName(Name);
}
/// Construct an InvokeInst given a range of arguments.
/// InputIterator must be a random-access iterator pointing to
/// contiguous storage (e.g. a std::vector<>::iterator). Checks are
/// made for random-accessness but not for contiguous storage as
/// that would incur runtime overhead.
///
/// @brief Construct an InvokeInst from a range of arguments
template<typename InputIterator>
InvokeInst(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name = "", Instruction *InsertBefore = 0)
: TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Invoke, 0, 0, InsertBefore) {
init(Func, IfNormal, IfException, ArgBegin, ArgEnd, Name,
typename std::iterator_traits<InputIterator>::iterator_category());
}
/// Construct an InvokeInst given a range of arguments.
/// InputIterator must be a random-access iterator pointing to
/// contiguous storage (e.g. a std::vector<>::iterator). Checks are
/// made for random-accessness but not for contiguous storage as
/// that would incur runtime overhead.
///
/// @brief Construct an InvokeInst from a range of arguments
template<typename InputIterator>
InvokeInst(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name, BasicBlock *InsertAtEnd)
: TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Invoke, 0, 0, InsertAtEnd) {
init(Func, IfNormal, IfException, ArgBegin, ArgEnd, Name,
typename std::iterator_traits<InputIterator>::iterator_category());
}
public:
template<typename InputIterator>
static InvokeInst *Create(Value *Func, BasicBlock *IfNormal,
BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name = "",
Instruction *InsertBefore = 0) {
return new(ArgEnd - ArgBegin + 3)
InvokeInst(Func, IfNormal, IfException, ArgBegin, ArgEnd, Name, InsertBefore);
}
template<typename InputIterator>
static InvokeInst *Create(Value *Func, BasicBlock *IfNormal,
BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const std::string &Name, BasicBlock *InsertAtEnd) {
return new(ArgEnd - ArgBegin + 3)
InvokeInst(Func, IfNormal, IfException, ArgBegin, ArgEnd, Name, InsertAtEnd);
}
~InvokeInst();
virtual InvokeInst *clone() const;
/// getCallingConv/setCallingConv - Get or set the calling convention of this
/// function call.
unsigned getCallingConv() const { return SubclassData; }
void setCallingConv(unsigned CC) {
SubclassData = CC;
}
/// getParamAttrs - Return the parameter attributes for this invoke.
///
const PAListPtr &getParamAttrs() const { return ParamAttrs; }
/// setParamAttrs - Set the parameter attributes for this invoke.
///
void setParamAttrs(const PAListPtr &Attrs) { ParamAttrs = Attrs; }
/// @brief Determine whether the call or the callee has the given attribute.
bool paramHasAttr(unsigned i, ParameterAttributes attr) const;
/// @brief Extract the alignment for a call or parameter (0=unknown).
unsigned getParamAlignment(unsigned i) const {
return ParamAttrs.getParamAlignment(i);
}
/// @brief Determine if the call does not access memory.
bool doesNotAccessMemory() const {
return paramHasAttr(0, ParamAttr::ReadNone);
}
/// @brief Determine if the call does not access or only reads memory.
bool onlyReadsMemory() const {
return doesNotAccessMemory() || paramHasAttr(0, ParamAttr::ReadOnly);
}
/// @brief Determine if the call cannot return.
bool doesNotReturn() const {
return paramHasAttr(0, ParamAttr::NoReturn);
}
/// @brief Determine if the call cannot unwind.
bool doesNotThrow() const {
return paramHasAttr(0, ParamAttr::NoUnwind);
}
void setDoesNotThrow(bool doesNotThrow = true);
/// @brief Determine if the call returns a structure through first
/// pointer argument.
bool hasStructRetAttr() const {
// Be friendly and also check the callee.
return paramHasAttr(1, ParamAttr::StructRet);
}
/// getCalledFunction - Return the function called, or null if this is an
/// indirect function invocation.
///
Function *getCalledFunction() const {
return dyn_cast<Function>(getOperand(0));
}
// getCalledValue - Get a pointer to a function that is invoked by this inst.
Value *getCalledValue() const { return getOperand(0); }
// get*Dest - Return the destination basic blocks...
BasicBlock *getNormalDest() const {
return cast<BasicBlock>(getOperand(1));
}
BasicBlock *getUnwindDest() const {
return cast<BasicBlock>(getOperand(2));
}
void setNormalDest(BasicBlock *B) {
setOperand(1, reinterpret_cast<Value*>(B));
}
void setUnwindDest(BasicBlock *B) {
setOperand(2, reinterpret_cast<Value*>(B));
}
BasicBlock *getSuccessor(unsigned i) const {
assert(i < 2 && "Successor # out of range for invoke!");
return i == 0 ? getNormalDest() : getUnwindDest();
}
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < 2 && "Successor # out of range for invoke!");
setOperand(idx+1, reinterpret_cast<Value*>(NewSucc));
}
unsigned getNumSuccessors() const { return 2; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const InvokeInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Invoke);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
virtual BasicBlock *getSuccessorV(unsigned idx) const;
virtual unsigned getNumSuccessorsV() const;
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
};
//===----------------------------------------------------------------------===//
// UnwindInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// UnwindInst - Immediately exit the current function, unwinding the stack
/// until an invoke instruction is found.
///
class UnwindInst : public TerminatorInst {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
explicit UnwindInst(Instruction *InsertBefore = 0);
explicit UnwindInst(BasicBlock *InsertAtEnd);
virtual UnwindInst *clone() const;
unsigned getNumSuccessors() const { return 0; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const UnwindInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Unwind;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
virtual BasicBlock *getSuccessorV(unsigned idx) const;
virtual unsigned getNumSuccessorsV() const;
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
};
//===----------------------------------------------------------------------===//
// UnreachableInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// UnreachableInst - This function has undefined behavior. In particular, the
/// presence of this instruction indicates some higher level knowledge that the
/// end of the block cannot be reached.
///
class UnreachableInst : public TerminatorInst {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
explicit UnreachableInst(Instruction *InsertBefore = 0);
explicit UnreachableInst(BasicBlock *InsertAtEnd);
virtual UnreachableInst *clone() const;
unsigned getNumSuccessors() const { return 0; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const UnreachableInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Unreachable;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
private:
virtual BasicBlock *getSuccessorV(unsigned idx) const;
virtual unsigned getNumSuccessorsV() const;
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
};
//===----------------------------------------------------------------------===//
// TruncInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a truncation of integer types.
class TruncInst : public CastInst {
/// Private copy constructor
TruncInst(const TruncInst &CI)
: CastInst(CI.getType(), Trunc, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
TruncInst(
Value *S, ///< The value to be truncated
const Type *Ty, ///< The (smaller) type to truncate to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
TruncInst(
Value *S, ///< The value to be truncated
const Type *Ty, ///< The (smaller) type to truncate to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical TruncInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const TruncInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Trunc;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// ZExtInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents zero extension of integer types.
class ZExtInst : public CastInst {
/// @brief Private copy constructor
ZExtInst(const ZExtInst &CI)
: CastInst(CI.getType(), ZExt, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
ZExtInst(
Value *S, ///< The value to be zero extended
const Type *Ty, ///< The type to zero extend to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end semantics.
ZExtInst(
Value *S, ///< The value to be zero extended
const Type *Ty, ///< The type to zero extend to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical ZExtInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ZExtInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == ZExt;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// SExtInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a sign extension of integer types.
class SExtInst : public CastInst {
/// @brief Private copy constructor
SExtInst(const SExtInst &CI)
: CastInst(CI.getType(), SExt, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
SExtInst(
Value *S, ///< The value to be sign extended
const Type *Ty, ///< The type to sign extend to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
SExtInst(
Value *S, ///< The value to be sign extended
const Type *Ty, ///< The type to sign extend to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical SExtInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const SExtInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == SExt;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FPTruncInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a truncation of floating point types.
class FPTruncInst : public CastInst {
FPTruncInst(const FPTruncInst &CI)
: CastInst(CI.getType(), FPTrunc, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
FPTruncInst(
Value *S, ///< The value to be truncated
const Type *Ty, ///< The type to truncate to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-before-instruction semantics
FPTruncInst(
Value *S, ///< The value to be truncated
const Type *Ty, ///< The type to truncate to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical FPTruncInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FPTruncInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == FPTrunc;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FPExtInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents an extension of floating point types.
class FPExtInst : public CastInst {
FPExtInst(const FPExtInst &CI)
: CastInst(CI.getType(), FPExt, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
FPExtInst(
Value *S, ///< The value to be extended
const Type *Ty, ///< The type to extend to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
FPExtInst(
Value *S, ///< The value to be extended
const Type *Ty, ///< The type to extend to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical FPExtInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FPExtInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == FPExt;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// UIToFPInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a cast unsigned integer to floating point.
class UIToFPInst : public CastInst {
UIToFPInst(const UIToFPInst &CI)
: CastInst(CI.getType(), UIToFP, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
UIToFPInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
UIToFPInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical UIToFPInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const UIToFPInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == UIToFP;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// SIToFPInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a cast from signed integer to floating point.
class SIToFPInst : public CastInst {
SIToFPInst(const SIToFPInst &CI)
: CastInst(CI.getType(), SIToFP, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
SIToFPInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
SIToFPInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical SIToFPInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const SIToFPInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == SIToFP;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FPToUIInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a cast from floating point to unsigned integer
class FPToUIInst : public CastInst {
FPToUIInst(const FPToUIInst &CI)
: CastInst(CI.getType(), FPToUI, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
FPToUIInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
FPToUIInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< Where to insert the new instruction
);
/// @brief Clone an identical FPToUIInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FPToUIInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == FPToUI;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FPToSIInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a cast from floating point to signed integer.
class FPToSIInst : public CastInst {
FPToSIInst(const FPToSIInst &CI)
: CastInst(CI.getType(), FPToSI, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
FPToSIInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
FPToSIInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical FPToSIInst
virtual CastInst *clone() const;
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FPToSIInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == FPToSI;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// IntToPtrInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a cast from an integer to a pointer.
class IntToPtrInst : public CastInst {
IntToPtrInst(const IntToPtrInst &CI)
: CastInst(CI.getType(), IntToPtr, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
IntToPtrInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
IntToPtrInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical IntToPtrInst
virtual CastInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const IntToPtrInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == IntToPtr;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// PtrToIntInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a cast from a pointer to an integer
class PtrToIntInst : public CastInst {
PtrToIntInst(const PtrToIntInst &CI)
: CastInst(CI.getType(), PtrToInt, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
PtrToIntInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
PtrToIntInst(
Value *S, ///< The value to be converted
const Type *Ty, ///< The type to convert to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical PtrToIntInst
virtual CastInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const PtrToIntInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == PtrToInt;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// BitCastInst Class
//===----------------------------------------------------------------------===//
/// @brief This class represents a no-op cast from one type to another.
class BitCastInst : public CastInst {
BitCastInst(const BitCastInst &CI)
: CastInst(CI.getType(), BitCast, CI.getOperand(0)) {
}
public:
/// @brief Constructor with insert-before-instruction semantics
BitCastInst(
Value *S, ///< The value to be casted
const Type *Ty, ///< The type to casted to
const std::string &Name = "", ///< A name for the new instruction
Instruction *InsertBefore = 0 ///< Where to insert the new instruction
);
/// @brief Constructor with insert-at-end-of-block semantics
BitCastInst(
Value *S, ///< The value to be casted
const Type *Ty, ///< The type to casted to
const std::string &Name, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical BitCastInst
virtual CastInst *clone() const;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const BitCastInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == BitCast;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// GetResultInst Class
//===----------------------------------------------------------------------===//
/// GetResultInst - This instruction extracts individual result value from
/// aggregate value, where aggregate value is returned by CallInst.
///
class GetResultInst : public /*FIXME: Unary*/Instruction {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
Use Aggr;
unsigned Idx;
GetResultInst(const GetResultInst &GRI) :
Instruction(GRI.getType(), Instruction::GetResult, &Aggr, 1) {
Aggr.init(GRI.Aggr, this);
Idx = GRI.Idx;
}
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
explicit GetResultInst(Value *Aggr, unsigned index,
const std::string &Name = "",
Instruction *InsertBefore = 0);
/// isValidOperands - Return true if an getresult instruction can be
/// formed with the specified operands.
static bool isValidOperands(const Value *Aggr, unsigned index);
virtual GetResultInst *clone() const;
Value *getAggregateValue() {
return getOperand(0);
}
const Value *getAggregateValue() const {
return getOperand(0);
}
unsigned getIndex() const {
return Idx;
}
unsigned getNumOperands() const { return 1; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const GetResultInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::GetResult);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
} // End llvm namespace
#endif