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llvm-mirror/include/llvm/Instructions.h
Victor Hernandez 8736a8fca4 Re-commit r86077 now that r86290 fixes the 179.art and 175.vpr ARM regressions. 
Here is the original commit message:

This commit updates malloc optimizations to operate on malloc calls that have constant int size arguments.

Update CreateMalloc so that its callers specify the size to allocate:
MallocInst-autoupgrade users use non-TargetData-computed allocation sizes.
Optimization uses use TargetData to compute the allocation size.

Now that malloc calls can have constant sizes, update isArrayMallocHelper() to use TargetData to determine the size of the malloced type and the size of malloced arrays.
Extend getMallocType() to support malloc calls that have non-bitcast uses.

Update OptimizeGlobalAddressOfMalloc() to optimize malloc calls that have non-bitcast uses.  The bitcast use of a malloc call has to be treated specially here because the uses of the bitcast need to be replaced and the bitcast needs to be erased (just like the malloc call) for OptimizeGlobalAddressOfMalloc() to work correctly.

Update PerformHeapAllocSRoA() to optimize malloc calls that have non-bitcast uses.  The bitcast use of the malloc is not handled specially here because ReplaceUsesOfMallocWithGlobal replaces through the bitcast use.

Update OptimizeOnceStoredGlobal() to not care about the malloc calls' bitcast use.

Update all globalopt malloc tests to not rely on autoupgraded-MallocInsts, but instead use explicit malloc calls with correct allocation sizes.

llvm-svn: 86311
2009-11-07 00:16:28 +00:00

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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 "llvm/InstrTypes.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Attributes.h"
#include "llvm/CallingConv.h"
#include "llvm/ADT/SmallVector.h"
#include <iterator>
namespace llvm {
class ConstantInt;
class ConstantRange;
class APInt;
class LLVMContext;
class DominatorTree;
//===----------------------------------------------------------------------===//
// AllocaInst Class
//===----------------------------------------------------------------------===//
/// AllocaInst - an instruction to allocate memory on the stack
///
class AllocaInst : public UnaryInstruction {
protected:
virtual AllocaInst *clone_impl() const;
public:
explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
const Twine &Name = "", Instruction *InsertBefore = 0);
AllocaInst(const Type *Ty, Value *ArraySize,
const Twine &Name, BasicBlock *InsertAtEnd);
AllocaInst(const Type *Ty, const Twine &Name, Instruction *InsertBefore = 0);
AllocaInst(const Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd);
AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
const Twine &Name = "", Instruction *InsertBefore = 0);
AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
const Twine &Name, BasicBlock *InsertAtEnd);
// Out of line virtual method, so the vtable, etc. has a home.
virtual ~AllocaInst();
/// 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 elements 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);
/// isStaticAlloca - Return true if this alloca is in the entry block of the
/// function and is a constant size. If so, the code generator will fold it
/// into the prolog/epilog code, so it is basically free.
bool isStaticAlloca() 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));
}
};
//===----------------------------------------------------------------------===//
// 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 {
void AssertOK();
protected:
virtual LoadInst *clone_impl() const;
public:
LoadInst(Value *Ptr, const Twine &NameStr, Instruction *InsertBefore);
LoadInst(Value *Ptr, const Twine &NameStr, BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const Twine &NameStr, bool isVolatile = false,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const Twine &NameStr, bool isVolatile,
unsigned Align, Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const Twine &NameStr, bool isVolatile,
BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const Twine &NameStr, bool isVolatile,
unsigned Align, BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const char *NameStr, Instruction *InsertBefore);
LoadInst(Value *Ptr, const char *NameStr, BasicBlock *InsertAtEnd);
explicit LoadInst(Value *Ptr, const char *NameStr = 0,
bool isVolatile = false, Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const char *NameStr, 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);
}
/// 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; }
unsigned getPointerAddressSpace() const {
return cast<PointerType>(getPointerOperand()->getType())->getAddressSpace();
}
// 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
void AssertOK();
protected:
virtual StoreInst *clone_impl() const;
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.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// 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(1); }
const Value *getPointerOperand() const { return getOperand(1); }
static unsigned getPointerOperandIndex() { return 1U; }
unsigned getPointerAddressSpace() const {
return cast<PointerType>(getPointerOperand()->getType())->getAddressSpace();
}
// 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));
}
};
template <>
struct OperandTraits<StoreInst> : public FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(StoreInst, Value)
//===----------------------------------------------------------------------===//
// 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);
void init(Value *Ptr, Value* const *Idx, unsigned NumIdx,
const Twine &NameStr);
void init(Value *Ptr, Value *Idx, const Twine &NameStr);
template<typename InputIterator>
void init(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr,
// 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.
init(Ptr, &*IdxBegin, NumIdx, NameStr); // FIXME: for the general case
// we have to build an array here
}
else {
init(Ptr, 0, NumIdx, NameStr);
}
}
/// getIndexedType - Returns the type of the element that would be loaded with
/// a load instruction with the specified parameters.
///
/// Null 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,
// 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, &*IdxBegin, NumIdx);
else
return getIndexedType(Ptr, (Value *const*)0, NumIdx);
}
/// 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>
inline GetElementPtrInst(Value *Ptr, InputIterator IdxBegin,
InputIterator IdxEnd,
unsigned Values,
const Twine &NameStr,
Instruction *InsertBefore);
template<typename InputIterator>
inline GetElementPtrInst(Value *Ptr,
InputIterator IdxBegin, InputIterator IdxEnd,
unsigned Values,
const Twine &NameStr, BasicBlock *InsertAtEnd);
/// Constructors - These two constructors are convenience methods because one
/// and two index getelementptr instructions are so common.
GetElementPtrInst(Value *Ptr, Value *Idx, const Twine &NameStr = "",
Instruction *InsertBefore = 0);
GetElementPtrInst(Value *Ptr, Value *Idx,
const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
virtual GetElementPtrInst *clone_impl() const;
public:
template<typename InputIterator>
static GetElementPtrInst *Create(Value *Ptr, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
typename std::iterator_traits<InputIterator>::difference_type Values =
1 + std::distance(IdxBegin, IdxEnd);
return new(Values)
GetElementPtrInst(Ptr, IdxBegin, IdxEnd, Values, NameStr, InsertBefore);
}
template<typename InputIterator>
static GetElementPtrInst *Create(Value *Ptr,
InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
typename std::iterator_traits<InputIterator>::difference_type Values =
1 + std::distance(IdxBegin, IdxEnd);
return new(Values)
GetElementPtrInst(Ptr, IdxBegin, IdxEnd, Values, NameStr, InsertAtEnd);
}
/// Constructors - These two creators are convenience methods because one
/// index getelementptr instructions are so common.
static GetElementPtrInst *Create(Value *Ptr, Value *Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new(2) GetElementPtrInst(Ptr, Idx, NameStr, InsertBefore);
}
static GetElementPtrInst *Create(Value *Ptr, Value *Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new(2) GetElementPtrInst(Ptr, Idx, NameStr, InsertAtEnd);
}
/// Create an "inbounds" getelementptr. See the documentation for the
/// "inbounds" flag in LangRef.html for details.
template<typename InputIterator>
static GetElementPtrInst *CreateInBounds(Value *Ptr, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
GetElementPtrInst *GEP = Create(Ptr, IdxBegin, IdxEnd,
NameStr, InsertBefore);
GEP->setIsInBounds(true);
return GEP;
}
template<typename InputIterator>
static GetElementPtrInst *CreateInBounds(Value *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
GetElementPtrInst *GEP = Create(Ptr, IdxBegin, IdxEnd,
NameStr, InsertAtEnd);
GEP->setIsInBounds(true);
return GEP;
}
static GetElementPtrInst *CreateInBounds(Value *Ptr, Value *Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
GetElementPtrInst *GEP = Create(Ptr, Idx, NameStr, InsertBefore);
GEP->setIsInBounds(true);
return GEP;
}
static GetElementPtrInst *CreateInBounds(Value *Ptr, Value *Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
GetElementPtrInst *GEP = Create(Ptr, Idx, NameStr, InsertAtEnd);
GEP->setIsInBounds(true);
return GEP;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
// 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.
///
/// Null 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) {
return getIndexedType(Ptr, IdxBegin, IdxEnd,
typename std::iterator_traits<InputIterator>::
iterator_category());
}
static const Type *getIndexedType(const Type *Ptr,
Value* const *Idx, unsigned NumIdx);
static const Type *getIndexedType(const Type *Ptr,
uint64_t const *Idx, unsigned NumIdx);
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 getPointerAddressSpace() const {
return cast<PointerType>(getType())->getAddressSpace();
}
/// getPointerOperandType - Method to return the pointer operand as a
/// PointerType.
const PointerType *getPointerOperandType() const {
return reinterpret_cast<const PointerType*>(getPointerOperand()->getType());
}
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;
/// setIsInBounds - Set or clear the inbounds flag on this GEP instruction.
/// See LangRef.html for the meaning of inbounds on a getelementptr.
void setIsInBounds(bool b = true);
/// isInBounds - Determine whether the GEP has the inbounds flag.
bool isInBounds() 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));
}
};
template <>
struct OperandTraits<GetElementPtrInst> : public VariadicOperandTraits<1> {
};
template<typename InputIterator>
GetElementPtrInst::GetElementPtrInst(Value *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
unsigned Values,
const Twine &NameStr,
Instruction *InsertBefore)
: Instruction(PointerType::get(checkType(
getIndexedType(Ptr->getType(),
IdxBegin, IdxEnd)),
cast<PointerType>(Ptr->getType())
->getAddressSpace()),
GetElementPtr,
OperandTraits<GetElementPtrInst>::op_end(this) - Values,
Values, InsertBefore) {
init(Ptr, IdxBegin, IdxEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
template<typename InputIterator>
GetElementPtrInst::GetElementPtrInst(Value *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
unsigned Values,
const Twine &NameStr,
BasicBlock *InsertAtEnd)
: Instruction(PointerType::get(checkType(
getIndexedType(Ptr->getType(),
IdxBegin, IdxEnd)),
cast<PointerType>(Ptr->getType())
->getAddressSpace()),
GetElementPtr,
OperandTraits<GetElementPtrInst>::op_end(this) - Values,
Values, InsertAtEnd) {
init(Ptr, IdxBegin, IdxEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GetElementPtrInst, Value)
//===----------------------------------------------------------------------===//
// ICmpInst Class
//===----------------------------------------------------------------------===//
/// This instruction compares its operands according to the predicate given
/// to the constructor. It only operates on integers or pointers. The operands
/// must be identical types.
/// @brief Represent an integer comparison operator.
class ICmpInst: public CmpInst {
protected:
/// @brief Clone an indentical ICmpInst
virtual ICmpInst *clone_impl() const;
public:
/// @brief Constructor with insert-before-instruction semantics.
ICmpInst(
Instruction *InsertBefore, ///< Where to insert
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 Twine &NameStr = "" ///< Name of the instruction
) : CmpInst(makeCmpResultType(LHS->getType()),
Instruction::ICmp, pred, LHS, RHS, NameStr,
InsertBefore) {
assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
pred <= CmpInst::LAST_ICMP_PREDICATE &&
"Invalid ICmp predicate value");
assert(getOperand(0)->getType() == getOperand(1)->getType() &&
"Both operands to ICmp instruction are not of the same type!");
// Check that the operands are the right type
assert((getOperand(0)->getType()->isIntOrIntVector() ||
isa<PointerType>(getOperand(0)->getType())) &&
"Invalid operand types for ICmp instruction");
}
/// @brief Constructor with insert-at-end semantics.
ICmpInst(
BasicBlock &InsertAtEnd, ///< Block to insert into.
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 Twine &NameStr = "" ///< Name of the instruction
) : CmpInst(makeCmpResultType(LHS->getType()),
Instruction::ICmp, pred, LHS, RHS, NameStr,
&InsertAtEnd) {
assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
pred <= CmpInst::LAST_ICMP_PREDICATE &&
"Invalid ICmp predicate value");
assert(getOperand(0)->getType() == getOperand(1)->getType() &&
"Both operands to ICmp instruction are not of the same type!");
// Check that the operands are the right type
assert((getOperand(0)->getType()->isIntOrIntVector() ||
isa<PointerType>(getOperand(0)->getType())) &&
"Invalid operand types for ICmp instruction");
}
/// @brief Constructor with no-insertion 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 Twine &NameStr = "" ///< Name of the instruction
) : CmpInst(makeCmpResultType(LHS->getType()),
Instruction::ICmp, pred, LHS, RHS, NameStr) {
assert(pred >= CmpInst::FIRST_ICMP_PREDICATE &&
pred <= CmpInst::LAST_ICMP_PREDICATE &&
"Invalid ICmp predicate value");
assert(getOperand(0)->getType() == getOperand(1)->getType() &&
"Both operands to ICmp instruction are not of the same type!");
// Check that the operands are the right type
assert((getOperand(0)->getType()->isIntOrIntVector() ||
isa<PointerType>(getOperand(0)->getType())) &&
"Invalid operand types for ICmp instruction");
}
/// 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);
}
/// 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();
Op<0>().swap(Op<1>());
}
// 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 {
protected:
/// @brief Clone an indentical FCmpInst
virtual FCmpInst *clone_impl() const;
public:
/// @brief Constructor with insert-before-instruction semantics.
FCmpInst(
Instruction *InsertBefore, ///< Where to insert
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 Twine &NameStr = "" ///< Name of the instruction
) : CmpInst(makeCmpResultType(LHS->getType()),
Instruction::FCmp, pred, LHS, RHS, NameStr,
InsertBefore) {
assert(pred <= FCmpInst::LAST_FCMP_PREDICATE &&
"Invalid FCmp predicate value");
assert(getOperand(0)->getType() == getOperand(1)->getType() &&
"Both operands to FCmp instruction are not of the same type!");
// Check that the operands are the right type
assert(getOperand(0)->getType()->isFPOrFPVector() &&
"Invalid operand types for FCmp instruction");
}
/// @brief Constructor with insert-at-end semantics.
FCmpInst(
BasicBlock &InsertAtEnd, ///< Block to insert into.
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 Twine &NameStr = "" ///< Name of the instruction
) : CmpInst(makeCmpResultType(LHS->getType()),
Instruction::FCmp, pred, LHS, RHS, NameStr,
&InsertAtEnd) {
assert(pred <= FCmpInst::LAST_FCMP_PREDICATE &&
"Invalid FCmp predicate value");
assert(getOperand(0)->getType() == getOperand(1)->getType() &&
"Both operands to FCmp instruction are not of the same type!");
// Check that the operands are the right type
assert(getOperand(0)->getType()->isFPOrFPVector() &&
"Invalid operand types for FCmp instruction");
}
/// @brief Constructor with no-insertion 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 Twine &NameStr = "" ///< Name of the instruction
) : CmpInst(makeCmpResultType(LHS->getType()),
Instruction::FCmp, pred, LHS, RHS, NameStr) {
assert(pred <= FCmpInst::LAST_FCMP_PREDICATE &&
"Invalid FCmp predicate value");
assert(getOperand(0)->getType() == getOperand(1)->getType() &&
"Both operands to FCmp instruction are not of the same type!");
// Check that the operands are the right type
assert(getOperand(0)->getType()->isFPOrFPVector() &&
"Invalid operand types for FCmp instruction");
}
/// @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;
}
/// @returns true if the predicate of this instruction is commutative.
/// @brief Determine if this is a commutative predicate.
bool isCommutative() const {
return isEquality() ||
SubclassData == FCMP_FALSE ||
SubclassData == FCMP_TRUE ||
SubclassData == FCMP_ORD ||
SubclassData == FCMP_UNO;
}
/// @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();
Op<0>().swap(Op<1>());
}
/// @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 {
AttrListPtr AttributeList; ///< 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 Twine &NameStr,
// 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(NameStr);
}
/// 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 Twine &NameStr, Instruction *InsertBefore);
/// 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>
inline CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr, BasicBlock *InsertAtEnd);
CallInst(Value *F, Value *Actual, const Twine &NameStr,
Instruction *InsertBefore);
CallInst(Value *F, Value *Actual, const Twine &NameStr,
BasicBlock *InsertAtEnd);
explicit CallInst(Value *F, const Twine &NameStr,
Instruction *InsertBefore);
CallInst(Value *F, const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
virtual CallInst *clone_impl() const;
public:
template<typename InputIterator>
static CallInst *Create(Value *Func,
InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new((unsigned)(ArgEnd - ArgBegin + 1))
CallInst(Func, ArgBegin, ArgEnd, NameStr, InsertBefore);
}
template<typename InputIterator>
static CallInst *Create(Value *Func,
InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr, BasicBlock *InsertAtEnd) {
return new((unsigned)(ArgEnd - ArgBegin + 1))
CallInst(Func, ArgBegin, ArgEnd, NameStr, InsertAtEnd);
}
static CallInst *Create(Value *F, Value *Actual,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new(2) CallInst(F, Actual, NameStr, InsertBefore);
}
static CallInst *Create(Value *F, Value *Actual, const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new(2) CallInst(F, Actual, NameStr, InsertAtEnd);
}
static CallInst *Create(Value *F, const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new(1) CallInst(F, NameStr, InsertBefore);
}
static CallInst *Create(Value *F, const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new(1) CallInst(F, NameStr, InsertAtEnd);
}
/// CreateMalloc - Generate the IR for a call to malloc:
/// 1. Compute the malloc call's argument as the specified type's size,
/// possibly multiplied by the array size if the array size is not
/// constant 1.
/// 2. Call malloc with that argument.
/// 3. Bitcast the result of the malloc call to the specified type.
static Instruction *CreateMalloc(Instruction *InsertBefore,
const Type *IntPtrTy, const Type *AllocTy,
Value *AllocSize, Value *ArraySize = 0,
const Twine &Name = "");
static Instruction *CreateMalloc(BasicBlock *InsertAtEnd,
const Type *IntPtrTy, const Type *AllocTy,
Value *AllocSize, Value *ArraySize = 0,
Function* MallocF = 0,
const Twine &Name = "");
/// CreateFree - Generate the IR for a call to the builtin free function.
static void CreateFree(Value* Source, Instruction *InsertBefore);
static Instruction* CreateFree(Value* Source, BasicBlock *InsertAtEnd);
~CallInst();
bool isTailCall() const { return SubclassData & 1; }
void setTailCall(bool isTC = true) {
SubclassData = (SubclassData & ~1) | unsigned(isTC);
}
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// getCallingConv/setCallingConv - Get or set the calling convention of this
/// function call.
CallingConv::ID getCallingConv() const {
return static_cast<CallingConv::ID>(SubclassData >> 1);
}
void setCallingConv(CallingConv::ID CC) {
SubclassData = (SubclassData & 1) | (static_cast<unsigned>(CC) << 1);
}
/// getAttributes - Return the parameter attributes for this call.
///
const AttrListPtr &getAttributes() const { return AttributeList; }
/// setAttributes - Set the parameter attributes for this call.
///
void setAttributes(const AttrListPtr &Attrs) { AttributeList = Attrs; }
/// addAttribute - adds the attribute to the list of attributes.
void addAttribute(unsigned i, Attributes attr);
/// removeAttribute - removes the attribute from the list of attributes.
void removeAttribute(unsigned i, Attributes attr);
/// @brief Determine whether the call or the callee has the given attribute.
bool paramHasAttr(unsigned i, Attributes attr) const;
/// @brief Extract the alignment for a call or parameter (0=unknown).
unsigned getParamAlignment(unsigned i) const {
return AttributeList.getParamAlignment(i);
}
/// @brief Determine if the call does not access memory.
bool doesNotAccessMemory() const {
return paramHasAttr(~0, Attribute::ReadNone);
}
void setDoesNotAccessMemory(bool NotAccessMemory = true) {
if (NotAccessMemory) addAttribute(~0, Attribute::ReadNone);
else removeAttribute(~0, Attribute::ReadNone);
}
/// @brief Determine if the call does not access or only reads memory.
bool onlyReadsMemory() const {
return doesNotAccessMemory() || paramHasAttr(~0, Attribute::ReadOnly);
}
void setOnlyReadsMemory(bool OnlyReadsMemory = true) {
if (OnlyReadsMemory) addAttribute(~0, Attribute::ReadOnly);
else removeAttribute(~0, Attribute::ReadOnly | Attribute::ReadNone);
}
/// @brief Determine if the call cannot return.
bool doesNotReturn() const {
return paramHasAttr(~0, Attribute::NoReturn);
}
void setDoesNotReturn(bool DoesNotReturn = true) {
if (DoesNotReturn) addAttribute(~0, Attribute::NoReturn);
else removeAttribute(~0, Attribute::NoReturn);
}
/// @brief Determine if the call cannot unwind.
bool doesNotThrow() const {
return paramHasAttr(~0, Attribute::NoUnwind);
}
void setDoesNotThrow(bool DoesNotThrow = true) {
if (DoesNotThrow) addAttribute(~0, Attribute::NoUnwind);
else removeAttribute(~0, Attribute::NoUnwind);
}
/// @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, Attribute::StructRet);
}
/// @brief Determine if any call argument is an aggregate passed by value.
bool hasByValArgument() const {
return AttributeList.hasAttrSomewhere(Attribute::ByVal);
}
/// getCalledFunction - Return the function called, or null if this is an
/// indirect function invocation.
///
Function *getCalledFunction() const {
return dyn_cast<Function>(Op<0>());
}
/// getCalledValue - Get a pointer to the function that is invoked by this
/// instruction.
const Value *getCalledValue() const { return Op<0>(); }
Value *getCalledValue() { return Op<0>(); }
/// setCalledFunction - Set the function called.
void setCalledFunction(Value* Fn) {
Op<0>() = Fn;
}
// 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));
}
};
template <>
struct OperandTraits<CallInst> : public VariadicOperandTraits<1> {
};
template<typename InputIterator>
CallInst::CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr, BasicBlock *InsertAtEnd)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call,
OperandTraits<CallInst>::op_end(this) - (ArgEnd - ArgBegin + 1),
(unsigned)(ArgEnd - ArgBegin + 1), InsertAtEnd) {
init(Func, ArgBegin, ArgEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
template<typename InputIterator>
CallInst::CallInst(Value *Func, InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr, Instruction *InsertBefore)
: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Call,
OperandTraits<CallInst>::op_end(this) - (ArgEnd - ArgBegin + 1),
(unsigned)(ArgEnd - ArgBegin + 1), InsertBefore) {
init(Func, ArgBegin, ArgEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CallInst, Value)
//===----------------------------------------------------------------------===//
// SelectInst Class
//===----------------------------------------------------------------------===//
/// SelectInst - This class represents the LLVM 'select' instruction.
///
class SelectInst : public Instruction {
void init(Value *C, Value *S1, Value *S2) {
assert(!areInvalidOperands(C, S1, S2) && "Invalid operands for select");
Op<0>() = C;
Op<1>() = S1;
Op<2>() = S2;
}
SelectInst(Value *C, Value *S1, Value *S2, const Twine &NameStr,
Instruction *InsertBefore)
: Instruction(S1->getType(), Instruction::Select,
&Op<0>(), 3, InsertBefore) {
init(C, S1, S2);
setName(NameStr);
}
SelectInst(Value *C, Value *S1, Value *S2, const Twine &NameStr,
BasicBlock *InsertAtEnd)
: Instruction(S1->getType(), Instruction::Select,
&Op<0>(), 3, InsertAtEnd) {
init(C, S1, S2);
setName(NameStr);
}
protected:
virtual SelectInst *clone_impl() const;
public:
static SelectInst *Create(Value *C, Value *S1, Value *S2,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new(3) SelectInst(C, S1, S2, NameStr, InsertBefore);
}
static SelectInst *Create(Value *C, Value *S1, Value *S2,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new(3) SelectInst(C, S1, S2, NameStr, InsertAtEnd);
}
const Value *getCondition() const { return Op<0>(); }
const Value *getTrueValue() const { return Op<1>(); }
const Value *getFalseValue() const { return Op<2>(); }
Value *getCondition() { return Op<0>(); }
Value *getTrueValue() { return Op<1>(); }
Value *getFalseValue() { return Op<2>(); }
/// areInvalidOperands - Return a string if the specified operands are invalid
/// for a select operation, otherwise return null.
static const char *areInvalidOperands(Value *Cond, Value *True, Value *False);
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
OtherOps getOpcode() const {
return static_cast<OtherOps>(Instruction::getOpcode());
}
// 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));
}
};
template <>
struct OperandTraits<SelectInst> : public FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(SelectInst, Value)
//===----------------------------------------------------------------------===//
// 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 {
protected:
virtual VAArgInst *clone_impl() const;
public:
VAArgInst(Value *List, const Type *Ty, const Twine &NameStr = "",
Instruction *InsertBefore = 0)
: UnaryInstruction(Ty, VAArg, List, InsertBefore) {
setName(NameStr);
}
VAArgInst(Value *List, const Type *Ty, const Twine &NameStr,
BasicBlock *InsertAtEnd)
: UnaryInstruction(Ty, VAArg, List, InsertAtEnd) {
setName(NameStr);
}
// 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 {
ExtractElementInst(Value *Vec, Value *Idx, const Twine &NameStr = "",
Instruction *InsertBefore = 0);
ExtractElementInst(Value *Vec, Value *Idx, const Twine &NameStr,
BasicBlock *InsertAtEnd);
protected:
virtual ExtractElementInst *clone_impl() const;
public:
static ExtractElementInst *Create(Value *Vec, Value *Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new(2) ExtractElementInst(Vec, Idx, NameStr, InsertBefore);
}
static ExtractElementInst *Create(Value *Vec, Value *Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new(2) ExtractElementInst(Vec, Idx, NameStr, InsertAtEnd);
}
/// isValidOperands - Return true if an extractelement instruction can be
/// formed with the specified operands.
static bool isValidOperands(const Value *Vec, const Value *Idx);
Value *getVectorOperand() { return Op<0>(); }
Value *getIndexOperand() { return Op<1>(); }
const Value *getVectorOperand() const { return Op<0>(); }
const Value *getIndexOperand() const { return Op<1>(); }
const VectorType *getVectorOperandType() const {
return reinterpret_cast<const VectorType*>(getVectorOperand()->getType());
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
// 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));
}
};
template <>
struct OperandTraits<ExtractElementInst> : public FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ExtractElementInst, Value)
//===----------------------------------------------------------------------===//
// InsertElementInst Class
//===----------------------------------------------------------------------===//
/// InsertElementInst - This instruction inserts a single (scalar)
/// element into a VectorType value
///
class InsertElementInst : public Instruction {
InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0);
InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
virtual InsertElementInst *clone_impl() const;
public:
static InsertElementInst *Create(Value *Vec, Value *NewElt, Value *Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new(3) InsertElementInst(Vec, NewElt, Idx, NameStr, InsertBefore);
}
static InsertElementInst *Create(Value *Vec, Value *NewElt, Value *Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new(3) InsertElementInst(Vec, NewElt, Idx, NameStr, 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);
/// 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.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
// 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));
}
};
template <>
struct OperandTraits<InsertElementInst> : public FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertElementInst, Value)
//===----------------------------------------------------------------------===//
// ShuffleVectorInst Class
//===----------------------------------------------------------------------===//
/// ShuffleVectorInst - This instruction constructs a fixed permutation of two
/// input vectors.
///
class ShuffleVectorInst : public Instruction {
protected:
virtual ShuffleVectorInst *clone_impl() const;
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 Twine &NameStr = "",
Instruction *InsertBefor = 0);
ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
const Twine &NameStr, 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);
/// 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.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// 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));
}
};
template <>
struct OperandTraits<ShuffleVectorInst> : public FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ShuffleVectorInst, Value)
//===----------------------------------------------------------------------===//
// ExtractValueInst Class
//===----------------------------------------------------------------------===//
/// ExtractValueInst - This instruction extracts a struct member or array
/// element value from an aggregate value.
///
class ExtractValueInst : public UnaryInstruction {
SmallVector<unsigned, 4> Indices;
ExtractValueInst(const ExtractValueInst &EVI);
void init(const unsigned *Idx, unsigned NumIdx,
const Twine &NameStr);
void init(unsigned Idx, const Twine &NameStr);
template<typename InputIterator>
void init(InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr,
// 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));
// There's no fundamental reason why we require at least one index
// (other than weirdness with &*IdxBegin being invalid; see
// getelementptr's init routine for example). But there's no
// present need to support it.
assert(NumIdx > 0 && "ExtractValueInst must have at least one index");
// This requires that the iterator points to contiguous memory.
init(&*IdxBegin, NumIdx, NameStr); // FIXME: for the general case
// we have to build an array here
}
/// getIndexedType - Returns the type of the element that would be extracted
/// with an extractvalue instruction with the specified parameters.
///
/// Null is returned if the indices are invalid for the specified
/// pointer type.
///
static const Type *getIndexedType(const Type *Agg,
const unsigned *Idx, unsigned NumIdx);
template<typename InputIterator>
static const Type *getIndexedType(const Type *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
// 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, &*IdxBegin, NumIdx);
else
return getIndexedType(Ptr, (const unsigned *)0, NumIdx);
}
/// Constructors - Create a extractvalue instruction with a base aggregate
/// value and a 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>
inline ExtractValueInst(Value *Agg, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
Instruction *InsertBefore);
template<typename InputIterator>
inline ExtractValueInst(Value *Agg,
InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr, BasicBlock *InsertAtEnd);
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
protected:
virtual ExtractValueInst *clone_impl() const;
public:
template<typename InputIterator>
static ExtractValueInst *Create(Value *Agg, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new
ExtractValueInst(Agg, IdxBegin, IdxEnd, NameStr, InsertBefore);
}
template<typename InputIterator>
static ExtractValueInst *Create(Value *Agg,
InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new ExtractValueInst(Agg, IdxBegin, IdxEnd, NameStr, InsertAtEnd);
}
/// Constructors - These two creators are convenience methods because one
/// index extractvalue instructions are much more common than those with
/// more than one.
static ExtractValueInst *Create(Value *Agg, unsigned Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
unsigned Idxs[1] = { Idx };
return new ExtractValueInst(Agg, Idxs, Idxs + 1, NameStr, InsertBefore);
}
static ExtractValueInst *Create(Value *Agg, unsigned Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
unsigned Idxs[1] = { Idx };
return new ExtractValueInst(Agg, Idxs, Idxs + 1, NameStr, InsertAtEnd);
}
/// getIndexedType - Returns the type of the element that would be extracted
/// with an extractvalue instruction with the specified parameters.
///
/// Null 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) {
return getIndexedType(Ptr, IdxBegin, IdxEnd,
typename std::iterator_traits<InputIterator>::
iterator_category());
}
static const Type *getIndexedType(const Type *Ptr, unsigned Idx);
typedef const unsigned* idx_iterator;
inline idx_iterator idx_begin() const { return Indices.begin(); }
inline idx_iterator idx_end() const { return Indices.end(); }
Value *getAggregateOperand() {
return getOperand(0);
}
const Value *getAggregateOperand() const {
return getOperand(0);
}
static unsigned getAggregateOperandIndex() {
return 0U; // get index for modifying correct operand
}
unsigned getNumIndices() const { // Note: always non-negative
return (unsigned)Indices.size();
}
bool hasIndices() const {
return true;
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ExtractValueInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::ExtractValue;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
template<typename InputIterator>
ExtractValueInst::ExtractValueInst(Value *Agg,
InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
Instruction *InsertBefore)
: UnaryInstruction(checkType(getIndexedType(Agg->getType(),
IdxBegin, IdxEnd)),
ExtractValue, Agg, InsertBefore) {
init(IdxBegin, IdxEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
template<typename InputIterator>
ExtractValueInst::ExtractValueInst(Value *Agg,
InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd)
: UnaryInstruction(checkType(getIndexedType(Agg->getType(),
IdxBegin, IdxEnd)),
ExtractValue, Agg, InsertAtEnd) {
init(IdxBegin, IdxEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
//===----------------------------------------------------------------------===//
// InsertValueInst Class
//===----------------------------------------------------------------------===//
/// InsertValueInst - This instruction inserts a struct field of array element
/// value into an aggregate value.
///
class InsertValueInst : public Instruction {
SmallVector<unsigned, 4> Indices;
void *operator new(size_t, unsigned); // Do not implement
InsertValueInst(const InsertValueInst &IVI);
void init(Value *Agg, Value *Val, const unsigned *Idx, unsigned NumIdx,
const Twine &NameStr);
void init(Value *Agg, Value *Val, unsigned Idx, const Twine &NameStr);
template<typename InputIterator>
void init(Value *Agg, Value *Val,
InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr,
// 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));
// There's no fundamental reason why we require at least one index
// (other than weirdness with &*IdxBegin being invalid; see
// getelementptr's init routine for example). But there's no
// present need to support it.
assert(NumIdx > 0 && "InsertValueInst must have at least one index");
// This requires that the iterator points to contiguous memory.
init(Agg, Val, &*IdxBegin, NumIdx, NameStr); // FIXME: for the general case
// we have to build an array here
}
/// Constructors - Create a insertvalue instruction with a base aggregate
/// value, a value to insert, and a 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>
inline InsertValueInst(Value *Agg, Value *Val, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
Instruction *InsertBefore);
template<typename InputIterator>
inline InsertValueInst(Value *Agg, Value *Val,
InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr, BasicBlock *InsertAtEnd);
/// Constructors - These two constructors are convenience methods because one
/// and two index insertvalue instructions are so common.
InsertValueInst(Value *Agg, Value *Val,
unsigned Idx, const Twine &NameStr = "",
Instruction *InsertBefore = 0);
InsertValueInst(Value *Agg, Value *Val, unsigned Idx,
const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
virtual InsertValueInst *clone_impl() const;
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
template<typename InputIterator>
static InsertValueInst *Create(Value *Agg, Value *Val, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new InsertValueInst(Agg, Val, IdxBegin, IdxEnd,
NameStr, InsertBefore);
}
template<typename InputIterator>
static InsertValueInst *Create(Value *Agg, Value *Val,
InputIterator IdxBegin, InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new InsertValueInst(Agg, Val, IdxBegin, IdxEnd,
NameStr, InsertAtEnd);
}
/// Constructors - These two creators are convenience methods because one
/// index insertvalue instructions are much more common than those with
/// more than one.
static InsertValueInst *Create(Value *Agg, Value *Val, unsigned Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new InsertValueInst(Agg, Val, Idx, NameStr, InsertBefore);
}
static InsertValueInst *Create(Value *Agg, Value *Val, unsigned Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new InsertValueInst(Agg, Val, Idx, NameStr, InsertAtEnd);
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
typedef const unsigned* idx_iterator;
inline idx_iterator idx_begin() const { return Indices.begin(); }
inline idx_iterator idx_end() const { return Indices.end(); }
Value *getAggregateOperand() {
return getOperand(0);
}
const Value *getAggregateOperand() const {
return getOperand(0);
}
static unsigned getAggregateOperandIndex() {
return 0U; // get index for modifying correct operand
}
Value *getInsertedValueOperand() {
return getOperand(1);
}
const Value *getInsertedValueOperand() const {
return getOperand(1);
}
static unsigned getInsertedValueOperandIndex() {
return 1U; // get index for modifying correct operand
}
unsigned getNumIndices() const { // Note: always non-negative
return (unsigned)Indices.size();
}
bool hasIndices() const {
return true;
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const InsertValueInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::InsertValue;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
template <>
struct OperandTraits<InsertValueInst> : public FixedNumOperandTraits<2> {
};
template<typename InputIterator>
InsertValueInst::InsertValueInst(Value *Agg,
Value *Val,
InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
Instruction *InsertBefore)
: Instruction(Agg->getType(), InsertValue,
OperandTraits<InsertValueInst>::op_begin(this),
2, InsertBefore) {
init(Agg, Val, IdxBegin, IdxEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
template<typename InputIterator>
InsertValueInst::InsertValueInst(Value *Agg,
Value *Val,
InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd)
: Instruction(Agg->getType(), InsertValue,
OperandTraits<InsertValueInst>::op_begin(this),
2, InsertAtEnd) {
init(Agg, Val, IdxBegin, IdxEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertValueInst, Value)
//===----------------------------------------------------------------------===//
// 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 Twine &NameStr = "",
Instruction *InsertBefore = 0)
: Instruction(Ty, Instruction::PHI, 0, 0, InsertBefore),
ReservedSpace(0) {
setName(NameStr);
}
PHINode(const Type *Ty, const Twine &NameStr, BasicBlock *InsertAtEnd)
: Instruction(Ty, Instruction::PHI, 0, 0, InsertAtEnd),
ReservedSpace(0) {
setName(NameStr);
}
protected:
virtual PHINode *clone_impl() const;
public:
static PHINode *Create(const Type *Ty, const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
return new PHINode(Ty, NameStr, InsertBefore);
}
static PHINode *Create(const Type *Ty, const Twine &NameStr,
BasicBlock *InsertAtEnd) {
return new PHINode(Ty, NameStr, 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);
}
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// 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);
}
static unsigned getOperandNumForIncomingValue(unsigned i) {
return i*2;
}
static unsigned getIncomingValueNumForOperand(unsigned i) {
assert(i % 2 == 0 && "Invalid incoming-value operand index!");
return i/2;
}
/// getIncomingBlock - Return incoming basic block #i.
///
BasicBlock *getIncomingBlock(unsigned i) const {
return cast<BasicBlock>(getOperand(i*2+1));
}
/// getIncomingBlock - Return incoming basic block corresponding
/// to an operand of the PHI.
///
BasicBlock *getIncomingBlock(const Use &U) const {
assert(this == U.getUser() && "Iterator doesn't point to PHI's Uses?");
return cast<BasicBlock>((&U + 1)->get());
}
/// getIncomingBlock - Return incoming basic block corresponding
/// to value use iterator.
///
template <typename U>
BasicBlock *getIncomingBlock(value_use_iterator<U> I) const {
return getIncomingBlock(I.getUse());
}
void setIncomingBlock(unsigned i, BasicBlock *BB) {
setOperand(i*2+1, (Value*)BB);
}
static unsigned getOperandNumForIncomingBlock(unsigned i) {
return i*2+1;
}
static unsigned getIncomingBlockNumForOperand(unsigned i) {
assert(i % 2 == 1 && "Invalid incoming-block operand index!");
return i/2;
}
/// 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] = V;
OperandList[OpNo+1] = (Value*)BB;
}
/// 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].get() == (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.
///
/// If the PHI has undef operands, but all the rest of the operands are
/// some unique value, return that value if it can be proved that the
/// value dominates the PHI. If DT is null, use a conservative check,
/// otherwise use DT to test for dominance.
///
Value *hasConstantValue(DominatorTree *DT = 0) 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);
};
template <>
struct OperandTraits<PHINode> : public HungoffOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(PHINode, Value)
//===----------------------------------------------------------------------===//
// ReturnInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// ReturnInst - Return a value (possibly void), from a function. Execution
/// does not continue in this function any longer.
///
class ReturnInst : public TerminatorInst {
ReturnInst(const ReturnInst &RI);
private:
// ReturnInst constructors:
// ReturnInst() - 'ret void' instruction
// ReturnInst( null) - 'ret void' instruction
// ReturnInst(Value* X) - 'ret X' instruction
// ReturnInst( null, Inst *I) - '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 B
// ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of B
//
// NOTE: If the Value* passed is of type void then the constructor behaves as
// if it was passed NULL.
explicit ReturnInst(LLVMContext &C, Value *retVal = 0,
Instruction *InsertBefore = 0);
ReturnInst(LLVMContext &C, Value *retVal, BasicBlock *InsertAtEnd);
explicit ReturnInst(LLVMContext &C, BasicBlock *InsertAtEnd);
protected:
virtual ReturnInst *clone_impl() const;
public:
static ReturnInst* Create(LLVMContext &C, Value *retVal = 0,
Instruction *InsertBefore = 0) {
return new(!!retVal) ReturnInst(C, retVal, InsertBefore);
}
static ReturnInst* Create(LLVMContext &C, Value *retVal,
BasicBlock *InsertAtEnd) {
return new(!!retVal) ReturnInst(C, retVal, InsertAtEnd);
}
static ReturnInst* Create(LLVMContext &C, BasicBlock *InsertAtEnd) {
return new(0) ReturnInst(C, InsertAtEnd);
}
virtual ~ReturnInst();
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// Convenience accessor
Value *getReturnValue(unsigned n = 0) const {
return n < getNumOperands()
? getOperand(n)
: 0;
}
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);
};
template <>
struct OperandTraits<ReturnInst> : public OptionalOperandTraits<> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ReturnInst, Value)
//===----------------------------------------------------------------------===//
// BranchInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// BranchInst - Conditional or Unconditional Branch instruction.
///
class BranchInst : public TerminatorInst {
/// Ops list - Branches are strange. The operands are ordered:
/// [Cond, FalseDest,] TrueDest. This makes some accessors faster because
/// they don't have to check for cond/uncond branchness. These are mostly
/// accessed relative from op_end().
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);
protected:
virtual BranchInst *clone_impl() const;
public:
static BranchInst *Create(BasicBlock *IfTrue, Instruction *InsertBefore = 0) {
return new(1, true) 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, true) BranchInst(IfTrue, InsertAtEnd);
}
static BranchInst *Create(BasicBlock *IfTrue, BasicBlock *IfFalse,
Value *Cond, BasicBlock *InsertAtEnd) {
return new(3) BranchInst(IfTrue, IfFalse, Cond, InsertAtEnd);
}
~BranchInst();
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
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 Op<-3>();
}
void setCondition(Value *V) {
assert(isConditional() && "Cannot set condition of unconditional branch!");
Op<-3>() = V;
}
// setUnconditionalDest - Change the current branch to an unconditional branch
// targeting the specified block.
// FIXME: Eliminate this ugly method.
void setUnconditionalDest(BasicBlock *Dest) {
Op<-1>() = (Value*)Dest;
if (isConditional()) { // Convert this to an uncond branch.
Op<-2>() = 0;
Op<-3>() = 0;
NumOperands = 1;
OperandList = op_begin();
}
}
unsigned getNumSuccessors() const { return 1+isConditional(); }
BasicBlock *getSuccessor(unsigned i) const {
assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
return cast_or_null<BasicBlock>((&Op<-1>() - i)->get());
}
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
*(&Op<-1>() - idx) = (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);
};
template <>
struct OperandTraits<BranchInst> : public VariadicOperandTraits<1> {};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BranchInst, Value)
//===----------------------------------------------------------------------===//
// SwitchInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// SwitchInst - Multiway switch
///
class SwitchInst : public TerminatorInst {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
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 &SI);
void init(Value *Value, BasicBlock *Default, unsigned NumCases);
void resizeOperands(unsigned No);
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 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 can also autoinsert before another instruction.
SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
Instruction *InsertBefore);
/// 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);
protected:
virtual SwitchInst *clone_impl() const;
public:
static SwitchInst *Create(Value *Value, BasicBlock *Default,
unsigned NumCases, Instruction *InsertBefore = 0) {
return new SwitchInst(Value, Default, NumCases, InsertBefore);
}
static SwitchInst *Create(Value *Value, BasicBlock *Default,
unsigned NumCases, BasicBlock *InsertAtEnd) {
return new SwitchInst(Value, Default, NumCases, InsertAtEnd);
}
~SwitchInst();
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
// 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);
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, (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);
};
template <>
struct OperandTraits<SwitchInst> : public HungoffOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(SwitchInst, Value)
//===----------------------------------------------------------------------===//
// IndirectBrInst Class
//===----------------------------------------------------------------------===//
//===---------------------------------------------------------------------------
/// IndirectBrInst - Indirect Branch Instruction.
///
class IndirectBrInst : public TerminatorInst {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
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
IndirectBrInst(const IndirectBrInst &IBI);
void init(Value *Address, unsigned NumDests);
void resizeOperands(unsigned No);
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
/// IndirectBrInst ctor - Create a new indirectbr instruction, specifying an
/// Address to jump to. The number of expected destinations can be specified
/// here to make memory allocation more efficient. This constructor can also
/// autoinsert before another instruction.
IndirectBrInst(Value *Address, unsigned NumDests, Instruction *InsertBefore);
/// IndirectBrInst ctor - Create a new indirectbr instruction, specifying an
/// Address to jump to. The number of expected destinations can be specified
/// here to make memory allocation more efficient. This constructor also
/// autoinserts at the end of the specified BasicBlock.
IndirectBrInst(Value *Address, unsigned NumDests, BasicBlock *InsertAtEnd);
protected:
virtual IndirectBrInst *clone_impl() const;
public:
static IndirectBrInst *Create(Value *Address, unsigned NumDests,
Instruction *InsertBefore = 0) {
return new IndirectBrInst(Address, NumDests, InsertBefore);
}
static IndirectBrInst *Create(Value *Address, unsigned NumDests,
BasicBlock *InsertAtEnd) {
return new IndirectBrInst(Address, NumDests, InsertAtEnd);
}
~IndirectBrInst();
/// Provide fast operand accessors.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
// Accessor Methods for IndirectBrInst instruction.
Value *getAddress() { return getOperand(0); }
const Value *getAddress() const { return getOperand(0); }
void setAddress(Value *V) { setOperand(0, V); }
/// getNumDestinations - return the number of possible destinations in this
/// indirectbr instruction.
unsigned getNumDestinations() const { return getNumOperands()-1; }
/// getDestination - Return the specified destination.
BasicBlock *getDestination(unsigned i) { return getSuccessor(i); }
const BasicBlock *getDestination(unsigned i) const { return getSuccessor(i); }
/// addDestination - Add a destination.
///
void addDestination(BasicBlock *Dest);
/// removeDestination - This method removes the specified successor from the
/// indirectbr instruction.
void removeDestination(unsigned i);
unsigned getNumSuccessors() const { return getNumOperands()-1; }
BasicBlock *getSuccessor(unsigned i) const {
return cast<BasicBlock>(getOperand(i+1));
}
void setSuccessor(unsigned i, BasicBlock *NewSucc) {
setOperand(i+1, (Value*)NewSucc);
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const IndirectBrInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::IndirectBr;
}
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);
};
template <>
struct OperandTraits<IndirectBrInst> : public HungoffOperandTraits<1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(IndirectBrInst, Value)
//===----------------------------------------------------------------------===//
// InvokeInst Class
//===----------------------------------------------------------------------===//
/// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
/// calling convention of the call.
///
class InvokeInst : public TerminatorInst {
AttrListPtr AttributeList;
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 Twine &NameStr,
// 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(NameStr);
}
/// 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>
inline InvokeInst(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
unsigned Values,
const Twine &NameStr, Instruction *InsertBefore);
/// 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>
inline InvokeInst(Value *Func, BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
unsigned Values,
const Twine &NameStr, BasicBlock *InsertAtEnd);
protected:
virtual InvokeInst *clone_impl() const;
public:
template<typename InputIterator>
static InvokeInst *Create(Value *Func,
BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
unsigned Values(ArgEnd - ArgBegin + 3);
return new(Values) InvokeInst(Func, IfNormal, IfException, ArgBegin, ArgEnd,
Values, NameStr, InsertBefore);
}
template<typename InputIterator>
static InvokeInst *Create(Value *Func,
BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
unsigned Values(ArgEnd - ArgBegin + 3);
return new(Values) InvokeInst(Func, IfNormal, IfException, ArgBegin, ArgEnd,
Values, NameStr, InsertAtEnd);
}
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
/// getCallingConv/setCallingConv - Get or set the calling convention of this
/// function call.
CallingConv::ID getCallingConv() const {
return static_cast<CallingConv::ID>(SubclassData);
}
void setCallingConv(CallingConv::ID CC) {
SubclassData = static_cast<unsigned>(CC);
}
/// getAttributes - Return the parameter attributes for this invoke.
///
const AttrListPtr &getAttributes() const { return AttributeList; }
/// setAttributes - Set the parameter attributes for this invoke.
///
void setAttributes(const AttrListPtr &Attrs) { AttributeList = Attrs; }
/// addAttribute - adds the attribute to the list of attributes.
void addAttribute(unsigned i, Attributes attr);
/// removeAttribute - removes the attribute from the list of attributes.
void removeAttribute(unsigned i, Attributes attr);
/// @brief Determine whether the call or the callee has the given attribute.
bool paramHasAttr(unsigned i, Attributes attr) const;
/// @brief Extract the alignment for a call or parameter (0=unknown).
unsigned getParamAlignment(unsigned i) const {
return AttributeList.getParamAlignment(i);
}
/// @brief Determine if the call does not access memory.
bool doesNotAccessMemory() const {
return paramHasAttr(~0, Attribute::ReadNone);
}
void setDoesNotAccessMemory(bool NotAccessMemory = true) {
if (NotAccessMemory) addAttribute(~0, Attribute::ReadNone);
else removeAttribute(~0, Attribute::ReadNone);
}
/// @brief Determine if the call does not access or only reads memory.
bool onlyReadsMemory() const {
return doesNotAccessMemory() || paramHasAttr(~0, Attribute::ReadOnly);
}
void setOnlyReadsMemory(bool OnlyReadsMemory = true) {
if (OnlyReadsMemory) addAttribute(~0, Attribute::ReadOnly);
else removeAttribute(~0, Attribute::ReadOnly | Attribute::ReadNone);
}
/// @brief Determine if the call cannot return.
bool doesNotReturn() const {
return paramHasAttr(~0, Attribute::NoReturn);
}
void setDoesNotReturn(bool DoesNotReturn = true) {
if (DoesNotReturn) addAttribute(~0, Attribute::NoReturn);
else removeAttribute(~0, Attribute::NoReturn);
}
/// @brief Determine if the call cannot unwind.
bool doesNotThrow() const {
return paramHasAttr(~0, Attribute::NoUnwind);
}
void setDoesNotThrow(bool DoesNotThrow = true) {
if (DoesNotThrow) addAttribute(~0, Attribute::NoUnwind);
else removeAttribute(~0, Attribute::NoUnwind);
}
/// @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, Attribute::StructRet);
}
/// @brief Determine if any call argument is an aggregate passed by value.
bool hasByValArgument() const {
return AttributeList.hasAttrSomewhere(Attribute::ByVal);
}
/// 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 the function that is invoked by this
/// instruction
const Value *getCalledValue() const { return getOperand(0); }
Value *getCalledValue() { 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, (Value*)B);
}
void setUnwindDest(BasicBlock *B) {
setOperand(2, (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, (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);
};
template <>
struct OperandTraits<InvokeInst> : public VariadicOperandTraits<3> {
};
template<typename InputIterator>
InvokeInst::InvokeInst(Value *Func,
BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
unsigned Values,
const Twine &NameStr, Instruction *InsertBefore)
: TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Invoke,
OperandTraits<InvokeInst>::op_end(this) - Values,
Values, InsertBefore) {
init(Func, IfNormal, IfException, ArgBegin, ArgEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
template<typename InputIterator>
InvokeInst::InvokeInst(Value *Func,
BasicBlock *IfNormal, BasicBlock *IfException,
InputIterator ArgBegin, InputIterator ArgEnd,
unsigned Values,
const Twine &NameStr, BasicBlock *InsertAtEnd)
: TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
->getElementType())->getReturnType(),
Instruction::Invoke,
OperandTraits<InvokeInst>::op_end(this) - Values,
Values, InsertAtEnd) {
init(Func, IfNormal, IfException, ArgBegin, ArgEnd, NameStr,
typename std::iterator_traits<InputIterator>::iterator_category());
}
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InvokeInst, Value)
//===----------------------------------------------------------------------===//
// 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
protected:
virtual UnwindInst *clone_impl() const;
public:
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
explicit UnwindInst(LLVMContext &C, Instruction *InsertBefore = 0);
explicit UnwindInst(LLVMContext &C, BasicBlock *InsertAtEnd);
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
protected:
virtual UnreachableInst *clone_impl() const;
public:
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
explicit UnreachableInst(LLVMContext &C, Instruction *InsertBefore = 0);
explicit UnreachableInst(LLVMContext &C, BasicBlock *InsertAtEnd);
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 {
protected:
/// @brief Clone an identical TruncInst
virtual TruncInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical ZExtInst
virtual ZExtInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical SExtInst
virtual SExtInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical FPTruncInst
virtual FPTruncInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical FPExtInst
virtual FPExtInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical UIToFPInst
virtual UIToFPInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical SIToFPInst
virtual SIToFPInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
protected:
/// @brief Clone an identical FPToUIInst
virtual FPToUIInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< Where to insert the new instruction
);
/// @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 {
protected:
/// @brief Clone an identical FPToSIInst
virtual FPToSIInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @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 {
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Clone an identical IntToPtrInst
virtual IntToPtrInst *clone_impl() 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 {
protected:
/// @brief Clone an identical PtrToIntInst
virtual PtrToIntInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
// 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 {
protected:
/// @brief Clone an identical BitCastInst
virtual BitCastInst *clone_impl() const;
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 Twine &NameStr = "", ///< 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 Twine &NameStr, ///< A name for the new instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
// 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));
}
};
} // End llvm namespace
#endif
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