LLVM API Documentation

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llvm::ConstantExpr Class Reference

#include <Constants.h>

Inheritance diagram for llvm::ConstantExpr:
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Collaboration diagram for llvm::ConstantExpr:
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List of all members.

Public Member Functions

 DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Constant)
 Transparently provide more efficient getOperand methods.
bool isCast () const
 Return true if this is a convert constant expression.
bool isCompare () const
 Return true if this is a compare constant expression.
bool hasIndices () const
 Return true if this is an insertvalue or extractvalue expression, and the getIndices() method may be used.
bool isGEPWithNoNotionalOverIndexing () const
 Return true if this is a getelementptr expression and all the index operands are compile-time known integers within the corresponding notional static array extents. Note that this is not equivalant to, a subset of, or a superset of the "inbounds" property.
unsigned getOpcode () const
 getOpcode - Return the opcode at the root of this constant expression
unsigned getPredicate () const
ArrayRef< unsignedgetIndices () const
const char * getOpcodeName () const
 getOpcodeName - Return a string representation for an opcode.
ConstantgetWithOperandReplaced (unsigned OpNo, Constant *Op) const
ConstantgetWithOperands (ArrayRef< Constant * > Ops) const
ConstantgetWithOperands (ArrayRef< Constant * > Ops, Type *Ty, bool OnlyIfReduced=false) const
 Get the current expression with the operands replaced.
InstructiongetAsInstruction ()
void destroyConstant () override
void replaceUsesOfWithOnConstant (Value *From, Value *To, Use *U) override

Static Public Member Functions

static ConstantgetAlignOf (Type *Ty)
static ConstantgetSizeOf (Type *Ty)
static ConstantgetOffsetOf (StructType *STy, unsigned FieldNo)
static ConstantgetOffsetOf (Type *Ty, Constant *FieldNo)
static ConstantgetNeg (Constant *C, bool HasNUW=false, bool HasNSW=false)
static ConstantgetFNeg (Constant *C)
static ConstantgetNot (Constant *C)
static ConstantgetAdd (Constant *C1, Constant *C2, bool HasNUW=false, bool HasNSW=false)
static ConstantgetFAdd (Constant *C1, Constant *C2)
static ConstantgetSub (Constant *C1, Constant *C2, bool HasNUW=false, bool HasNSW=false)
static ConstantgetFSub (Constant *C1, Constant *C2)
static ConstantgetMul (Constant *C1, Constant *C2, bool HasNUW=false, bool HasNSW=false)
static ConstantgetFMul (Constant *C1, Constant *C2)
static ConstantgetUDiv (Constant *C1, Constant *C2, bool isExact=false)
static ConstantgetSDiv (Constant *C1, Constant *C2, bool isExact=false)
static ConstantgetFDiv (Constant *C1, Constant *C2)
static ConstantgetURem (Constant *C1, Constant *C2)
static ConstantgetSRem (Constant *C1, Constant *C2)
static ConstantgetFRem (Constant *C1, Constant *C2)
static ConstantgetAnd (Constant *C1, Constant *C2)
static ConstantgetOr (Constant *C1, Constant *C2)
static ConstantgetXor (Constant *C1, Constant *C2)
static ConstantgetShl (Constant *C1, Constant *C2, bool HasNUW=false, bool HasNSW=false)
static ConstantgetLShr (Constant *C1, Constant *C2, bool isExact=false)
static ConstantgetAShr (Constant *C1, Constant *C2, bool isExact=false)
static ConstantgetTrunc (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetSExt (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetZExt (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetFPTrunc (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetFPExtend (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetUIToFP (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetSIToFP (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetFPToUI (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetFPToSI (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetPtrToInt (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetIntToPtr (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetBitCast (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetAddrSpaceCast (Constant *C, Type *Ty, bool OnlyIfReduced=false)
static ConstantgetNSWNeg (Constant *C)
static ConstantgetNUWNeg (Constant *C)
static ConstantgetNSWAdd (Constant *C1, Constant *C2)
static ConstantgetNUWAdd (Constant *C1, Constant *C2)
static ConstantgetNSWSub (Constant *C1, Constant *C2)
static ConstantgetNUWSub (Constant *C1, Constant *C2)
static ConstantgetNSWMul (Constant *C1, Constant *C2)
static ConstantgetNUWMul (Constant *C1, Constant *C2)
static ConstantgetNSWShl (Constant *C1, Constant *C2)
static ConstantgetNUWShl (Constant *C1, Constant *C2)
static ConstantgetExactSDiv (Constant *C1, Constant *C2)
static ConstantgetExactUDiv (Constant *C1, Constant *C2)
static ConstantgetExactAShr (Constant *C1, Constant *C2)
static ConstantgetExactLShr (Constant *C1, Constant *C2)
static ConstantgetBinOpIdentity (unsigned Opcode, Type *Ty)
static ConstantgetBinOpAbsorber (unsigned Opcode, Type *Ty)
static ConstantgetCast (unsigned ops, Constant *C, Type *Ty, bool OnlyIfReduced=false)
 Convenience function for getting a Cast operation.
static ConstantgetZExtOrBitCast (Constant *C, Type *Ty)
static ConstantgetSExtOrBitCast (Constant *C, Type *Ty)
static ConstantgetTruncOrBitCast (Constant *C, Type *Ty)
static ConstantgetPointerCast (Constant *C, Type *Ty)
 Create a BitCast, AddrSpaceCast, or a PtrToInt cast constant expression.
static ConstantgetPointerBitCastOrAddrSpaceCast (Constant *C, Type *Ty)
 Create a BitCast or AddrSpaceCast for a pointer type depending on the address space.
static ConstantgetIntegerCast (Constant *C, Type *Ty, bool isSigned)
 Create a ZExt, Bitcast or Trunc for integer -> integer casts.
static ConstantgetFPCast (Constant *C, Type *Ty)
 Create a FPExt, Bitcast or FPTrunc for fp -> fp casts.
static ConstantgetSelect (Constant *C, Constant *V1, Constant *V2, Type *OnlyIfReducedTy=nullptr)
static Constantget (unsigned Opcode, Constant *C1, Constant *C2, unsigned Flags=0, Type *OnlyIfReducedTy=nullptr)
static ConstantgetCompare (unsigned short pred, Constant *C1, Constant *C2, bool OnlyIfReduced=false)
 Return an ICmp or FCmp comparison operator constant expression.
static ConstantgetICmp (unsigned short pred, Constant *LHS, Constant *RHS, bool OnlyIfReduced=false)
static ConstantgetFCmp (unsigned short pred, Constant *LHS, Constant *RHS, bool OnlyIfReduced=false)
static ConstantgetGetElementPtr (Constant *C, ArrayRef< Constant * > IdxList, bool InBounds=false, Type *OnlyIfReducedTy=nullptr)
static ConstantgetGetElementPtr (Constant *C, Constant *Idx, bool InBounds=false, Type *OnlyIfReducedTy=nullptr)
static ConstantgetGetElementPtr (Constant *C, ArrayRef< Value * > IdxList, bool InBounds=false, Type *OnlyIfReducedTy=nullptr)
static ConstantgetInBoundsGetElementPtr (Constant *C, ArrayRef< Constant * > IdxList)
static ConstantgetInBoundsGetElementPtr (Constant *C, Constant *Idx)
static ConstantgetInBoundsGetElementPtr (Constant *C, ArrayRef< Value * > IdxList)
static ConstantgetExtractElement (Constant *Vec, Constant *Idx, Type *OnlyIfReducedTy=nullptr)
static ConstantgetInsertElement (Constant *Vec, Constant *Elt, Constant *Idx, Type *OnlyIfReducedTy=nullptr)
static ConstantgetShuffleVector (Constant *V1, Constant *V2, Constant *Mask, Type *OnlyIfReducedTy=nullptr)
static ConstantgetExtractValue (Constant *Agg, ArrayRef< unsigned > Idxs, Type *OnlyIfReducedTy=nullptr)
static ConstantgetInsertValue (Constant *Agg, Constant *Val, ArrayRef< unsigned > Idxs, Type *OnlyIfReducedTy=nullptr)
static bool classof (const Value *V)
 Methods for support type inquiry through isa, cast, and dyn_cast:

Protected Member Functions

 ConstantExpr (Type *ty, unsigned Opcode, Use *Ops, unsigned NumOps)

Friends

struct ConstantExprKeyType

Detailed Description

ConstantExpr - a constant value that is initialized with an expression using other constant values.

This class uses the standard Instruction opcodes to define the various constant expressions. The Opcode field for the ConstantExpr class is maintained in the Value::SubclassData field.

Definition at line 803 of file Constants.h.


Constructor & Destructor Documentation

llvm::ConstantExpr::ConstantExpr ( Type ty,
unsigned  Opcode,
Use Ops,
unsigned  NumOps 
) [inline, protected]

Definition at line 807 of file Constants.h.


Member Function Documentation

static bool llvm::ConstantExpr::classof ( const Value V) [inline, static]

Methods for support type inquiry through isa, cast, and dyn_cast:

Reimplemented from llvm::Constant.

Definition at line 1138 of file Constants.h.

References llvm::Value::getValueID().

Transparently provide more efficient getOperand methods.

void ConstantExpr::destroyConstant ( ) [override, virtual]

destroyConstant - Called if some element of this constant is no longer valid. At this point only other constants may be on the use_list for this constant. Any constants on our Use list must also be destroy'd. The implementation must be sure to remove the constant from the list of available cached constants. Implementations should call destroyConstantImpl as the last thing they do, to destroy all users and delete this.

Reimplemented from llvm::Constant.

Definition at line 2341 of file Constants.cpp.

References llvm::Constant::destroyConstantImpl(), llvm::LLVMContextImpl::ExprConstants, llvm::Type::getContext(), llvm::Value::getType(), llvm::LLVMContext::pImpl, and llvm::ConstantUniqueMap< ConstantClass >::remove().

Referenced by replaceConstantExprOp().

Constant * ConstantExpr::get ( unsigned  Opcode,
Constant C1,
Constant C2,
unsigned  Flags = 0,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getAdd ( Constant C1,
Constant C2,
bool  HasNUW = false,
bool  HasNSW = false 
) [static]
Constant * ConstantExpr::getAddrSpaceCast ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getAlignOf ( Type Ty) [static]

getAlignOf constant expr - computes the alignment of a type in a target independent way (Note: the return type is an i64).

Definition at line 1916 of file Constants.cpp.

References get(), llvm::Type::getContext(), getGetElementPtr(), llvm::Type::getInt1Ty(), llvm::Type::getInt32Ty(), llvm::Type::getInt64Ty(), llvm::Constant::getNullValue(), llvm::Type::getPointerTo(), and getPtrToInt().

Referenced by getFoldedAlignOf(), and LLVMAlignOf().

Constant * ConstantExpr::getAnd ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getAShr ( Constant C1,
Constant C2,
bool  isExact = false 
) [static]

getAsInstruction - Returns an Instruction which implements the same operation as this ConstantExpr. The instruction is not linked to any basic block.

A better approach to this could be to have a constructor for Instruction which would take a ConstantExpr parameter, but that would have spread implementation details of ConstantExpr outside of Constants.cpp, which would make it harder to remove ConstantExprs altogether.

Definition at line 2905 of file Constants.cpp.

References llvm::AddrSpaceCast, llvm::BinaryOperator::Create(), llvm::CastInst::Create(), llvm::CmpInst::Create(), llvm::GetElementPtrInst::Create(), llvm::SelectInst::Create(), llvm::ExtractElementInst::Create(), llvm::InsertElementInst::Create(), llvm::ExtractValueInst::Create(), llvm::InsertValueInst::Create(), llvm::GetElementPtrInst::CreateInBounds(), ExtractElement(), llvm::ExtractValue, llvm::FCmp, llvm::FPExt, llvm::FPToSI, getIndices(), llvm::User::getNumOperands(), getOpcode(), getPredicate(), llvm::Value::getType(), I, llvm::InsertElement, llvm::IntToPtr, llvm::PossiblyExactOperator::IsExact, llvm::OverflowingBinaryOperator::NoSignedWrap, llvm::OverflowingBinaryOperator::NoUnsignedWrap, llvm::User::op_begin(), llvm::User::op_end(), llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::MCID::Select, llvm::BinaryOperator::setHasNoSignedWrap(), llvm::BinaryOperator::setHasNoUnsignedWrap(), llvm::BinaryOperator::setIsExact(), llvm::SExt, llvm::SIToFP, llvm::ArrayRef< T >::slice(), llvm::Value::SubclassOptionalData, and llvm::Trunc.

Constant * ConstantExpr::getBinOpAbsorber ( unsigned  Opcode,
Type Ty 
) [static]

getBinOpAbsorber - Return the absorbing element for the given binary operation, i.e. a constant C such that X op C = C and C op X = C for every X. For example, this returns zero for integer multiplication. It returns null if the operator doesn't have an absorbing element.

Definition at line 2324 of file Constants.cpp.

References llvm::APIntOps::And(), llvm::Constant::getAllOnesValue(), llvm::Constant::getNullValue(), and llvm::APIntOps::Or().

Constant * ConstantExpr::getBinOpIdentity ( unsigned  Opcode,
Type Ty 
) [static]

getBinOpIdentity - Return the identity for the given binary operation, i.e. a constant C such that X op C = X and C op X = X for every X. It returns null if the operator doesn't have an identity.

Definition at line 2301 of file Constants.cpp.

References llvm::Add, llvm::APIntOps::And(), get(), llvm::Constant::getAllOnesValue(), llvm::Constant::getNullValue(), llvm::APIntOps::Or(), and llvm::APIntOps::Xor().

Referenced by LinearizeExprTree().

Constant * ConstantExpr::getBitCast ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getCast ( unsigned  ops,
Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getCompare ( unsigned short  pred,
Constant C1,
Constant C2,
bool  OnlyIfReduced = false 
) [static]
static Constant* llvm::ConstantExpr::getExactAShr ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 916 of file Constants.h.

static Constant* llvm::ConstantExpr::getExactLShr ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 919 of file Constants.h.

static Constant* llvm::ConstantExpr::getExactSDiv ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 910 of file Constants.h.

Referenced by LLVMConstExactSDiv().

static Constant* llvm::ConstantExpr::getExactUDiv ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 913 of file Constants.h.

Constant * ConstantExpr::getExtractElement ( Constant Vec,
Constant Idx,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getExtractValue ( Constant Agg,
ArrayRef< unsigned Idxs,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getFAdd ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getFCmp ( unsigned short  pred,
Constant LHS,
Constant RHS,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getFDiv ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getFMul ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getFPCast ( Constant C,
Type Ty 
) [static]

Create a FPExt, Bitcast or FPTrunc for fp -> fp casts.

Parameters:
CThe integer constant to be casted
TyThe integer type to cast to

Definition at line 1645 of file Constants.cpp.

References llvm::CallingConv::C, llvm::FPExt, getCast(), llvm::Type::getScalarSizeInBits(), llvm::Value::getType(), and llvm::Type::isFPOrFPVectorTy().

Referenced by llvm::ConstantFolder::CreateFPCast(), llvm::TargetFolder::CreateFPCast(), and LLVMConstFPCast().

Constant * ConstantExpr::getFPExtend ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getFPToSI ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getFPToUI ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getFPTrunc ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getFRem ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getFSub ( Constant C1,
Constant C2 
) [static]
static Constant* llvm::ConstantExpr::getGetElementPtr ( Constant C,
ArrayRef< Constant * >  IdxList,
bool  InBounds = false,
Type OnlyIfReducedTy = nullptr 
) [inline, static]
static Constant* llvm::ConstantExpr::getGetElementPtr ( Constant C,
Constant Idx,
bool  InBounds = false,
Type OnlyIfReducedTy = nullptr 
) [inline, static]

Definition at line 1046 of file Constants.h.

Constant * ConstantExpr::getGetElementPtr ( Constant C,
ArrayRef< Value * >  IdxList,
bool  InBounds = false,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getICmp ( unsigned short  pred,
Constant LHS,
Constant RHS,
bool  OnlyIfReduced = false 
) [static]
static Constant* llvm::ConstantExpr::getInBoundsGetElementPtr ( Constant C,
ArrayRef< Constant * >  IdxList 
) [inline, static]

Create an "inbounds" getelementptr. See the documentation for the "inbounds" flag in LangRef.html for details.

Definition at line 1060 of file Constants.h.

Referenced by ConstantFoldGetElementPtrImpl(), llvm::ConstantFolder::CreateInBoundsGetElementPtr(), llvm::TargetFolder::CreateInBoundsGetElementPtr(), llvm::NoFolder::CreateInBoundsGetElementPtr(), FoldBitCast(), INITIALIZE_TM_PASS(), and LLVMConstInBoundsGEP().

static Constant* llvm::ConstantExpr::getInBoundsGetElementPtr ( Constant C,
Constant Idx 
) [inline, static]

Definition at line 1064 of file Constants.h.

static Constant* llvm::ConstantExpr::getInBoundsGetElementPtr ( Constant C,
ArrayRef< Value * >  IdxList 
) [inline, static]

Definition at line 1071 of file Constants.h.

getIndices - Assert that this is an insertvalue or exactvalue expression and return the list of indices.

Definition at line 1164 of file Constants.cpp.

Referenced by getAsInstruction(), getWithOperands(), and llvm::ConstantExprKeyType::operator==().

Constant * ConstantExpr::getInsertElement ( Constant Vec,
Constant Elt,
Constant Idx,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getInsertValue ( Constant Agg,
Constant Val,
ArrayRef< unsigned Idxs,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getIntegerCast ( Constant C,
Type Ty,
bool  isSigned 
) [static]
Constant * ConstantExpr::getIntToPtr ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getLShr ( Constant C1,
Constant C2,
bool  isExact = false 
) [static]
Constant * ConstantExpr::getMul ( Constant C1,
Constant C2,
bool  HasNUW = false,
bool  HasNSW = false 
) [static]
Constant * ConstantExpr::getNeg ( Constant C,
bool  HasNUW = false,
bool  HasNSW = false 
) [static]
Constant * ConstantExpr::getNot ( Constant C) [static]
static Constant* llvm::ConstantExpr::getNSWAdd ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 886 of file Constants.h.

Referenced by LLVMConstNSWAdd().

static Constant* llvm::ConstantExpr::getNSWMul ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 898 of file Constants.h.

Referenced by LLVMConstNSWMul().

static Constant* llvm::ConstantExpr::getNSWNeg ( Constant C) [inline, static]

Definition at line 884 of file Constants.h.

Referenced by LLVMConstNSWNeg().

static Constant* llvm::ConstantExpr::getNSWShl ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 904 of file Constants.h.

static Constant* llvm::ConstantExpr::getNSWSub ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 892 of file Constants.h.

Referenced by LLVMConstNSWSub().

static Constant* llvm::ConstantExpr::getNUWAdd ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 889 of file Constants.h.

Referenced by LLVMConstNUWAdd().

static Constant* llvm::ConstantExpr::getNUWMul ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 901 of file Constants.h.

Referenced by getFoldedOffsetOf(), getFoldedSizeOf(), and LLVMConstNUWMul().

static Constant* llvm::ConstantExpr::getNUWNeg ( Constant C) [inline, static]

Definition at line 885 of file Constants.h.

Referenced by LLVMConstNUWNeg().

static Constant* llvm::ConstantExpr::getNUWShl ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 907 of file Constants.h.

Referenced by llvm::InstCombiner::visitICmpInstWithInstAndIntCst().

static Constant* llvm::ConstantExpr::getNUWSub ( Constant C1,
Constant C2 
) [inline, static]

Definition at line 895 of file Constants.h.

Referenced by LLVMConstNUWSub().

Constant * ConstantExpr::getOffsetOf ( StructType STy,
unsigned  FieldNo 
) [static]

getOffsetOf constant expr - computes the offset of a struct field in a target independent way (Note: the return type is an i64).

Definition at line 1930 of file Constants.cpp.

References llvm::ConstantInt::get(), llvm::Type::getContext(), and llvm::Type::getInt32Ty().

Referenced by getFoldedOffsetOf(), and llvm::ScalarEvolution::getOffsetOfExpr().

Constant * ConstantExpr::getOffsetOf ( Type Ty,
Constant FieldNo 
) [static]

getOffsetOf constant expr - This is a generalized form of getOffsetOf, which supports any aggregate type, and any Constant index.

Definition at line 1935 of file Constants.cpp.

References get(), llvm::Type::getContext(), getGetElementPtr(), llvm::Type::getInt64Ty(), llvm::Constant::getNullValue(), getPtrToInt(), and llvm::PointerType::getUnqual().

getOpcodeName - Return a string representation for an opcode.

Definition at line 2346 of file Constants.cpp.

References getOpcode().

Constant * ConstantExpr::getOr ( Constant C1,
Constant C2 
) [static]

Create a BitCast or AddrSpaceCast for a pointer type depending on the address space.

Parameters:
CThe constant to addrspacecast or bitcast
TyThe type to bitcast or addrspacecast C to

Definition at line 1621 of file Constants.cpp.

References getAddrSpaceCast(), getBitCast(), llvm::Type::getPointerAddressSpace(), llvm::Value::getType(), and llvm::Type::isPtrOrPtrVectorTy().

Referenced by llvm::ConstantFolder::CreatePointerBitCastOrAddrSpaceCast(), llvm::TargetFolder::CreatePointerBitCastOrAddrSpaceCast(), setUsedInitializer(), and llvm::InstCombiner::visitAllocaInst().

Constant * ConstantExpr::getPointerCast ( Constant C,
Type Ty 
) [static]

Create a BitCast, AddrSpaceCast, or a PtrToInt cast constant expression.

Parameters:
CThe pointer value to be casted (operand 0)
TyThe type to which cast should be made

Definition at line 1606 of file Constants.cpp.

References getAddrSpaceCast(), getBitCast(), llvm::Type::getPointerAddressSpace(), getPtrToInt(), llvm::Value::getType(), llvm::Type::isIntOrIntVectorTy(), and llvm::Type::isPtrOrPtrVectorTy().

Referenced by llvm::ConstantFoldCastInstruction(), llvm::ConstantFolder::CreatePointerCast(), llvm::TargetFolder::CreatePointerCast(), INITIALIZE_PASS(), LLVMConstPointerCast(), and StripPtrCastKeepAS().

getPredicate - Return the ICMP or FCMP predicate value. Assert if this is not an ICMP or FCMP constant expression.

Definition at line 1172 of file Constants.cpp.

References isCompare().

Referenced by ConstantFoldConstantExpressionImpl(), getAsInstruction(), getWithOperands(), and llvm::ConstantExprKeyType::operator==().

Constant * ConstantExpr::getPtrToInt ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getSDiv ( Constant C1,
Constant C2,
bool  isExact = false 
) [static]
Constant * ConstantExpr::getSelect ( Constant C,
Constant V1,
Constant V2,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getSExt ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getSExtOrBitCast ( Constant C,
Type Ty 
) [static]
Parameters:
CThe constant to sext or bitcast
TyThe type to sext or bitcast C to

Definition at line 1594 of file Constants.cpp.

References getBitCast(), llvm::Type::getScalarSizeInBits(), getSExt(), and llvm::Value::getType().

Referenced by ConstantFoldGetElementPtrImpl(), llvm::ConstantFolder::CreateSExtOrBitCast(), llvm::TargetFolder::CreateSExtOrBitCast(), and LLVMConstSExtOrBitCast().

Constant * ConstantExpr::getShl ( Constant C1,
Constant C2,
bool  HasNUW = false,
bool  HasNSW = false 
) [static]
Constant * ConstantExpr::getShuffleVector ( Constant V1,
Constant V2,
Constant Mask,
Type OnlyIfReducedTy = nullptr 
) [static]
Constant * ConstantExpr::getSIToFP ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getSizeOf ( Type Ty) [static]

getSizeOf constant expr - computes the (alloc) size of a type (in address-units, not bits) in a target independent way (Note: the return type is an i64).

Definition at line 1906 of file Constants.cpp.

References get(), llvm::Type::getContext(), getGetElementPtr(), llvm::Type::getInt32Ty(), llvm::Type::getInt64Ty(), llvm::Constant::getNullValue(), getPtrToInt(), and llvm::PointerType::getUnqual().

Referenced by llvm::IRBuilder< true, TargetFolder >::CreatePtrDiff(), getFoldedSizeOf(), llvm::ScalarEvolution::getSizeOfExpr(), HandleByValArgumentInit(), LLVMBuildArrayMalloc(), LLVMBuildMalloc(), and LLVMSizeOf().

Constant * ConstantExpr::getSRem ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getSub ( Constant C1,
Constant C2,
bool  HasNUW = false,
bool  HasNSW = false 
) [static]
Constant * ConstantExpr::getTrunc ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getTruncOrBitCast ( Constant C,
Type Ty 
) [static]
Parameters:
CThe constant to trunc or bitcast
TyThe type to trunc or bitcast C to

Definition at line 1600 of file Constants.cpp.

References getBitCast(), llvm::Type::getScalarSizeInBits(), getTrunc(), and llvm::Value::getType().

Referenced by llvm::ConstantFolder::CreateTruncOrBitCast(), llvm::TargetFolder::CreateTruncOrBitCast(), LLVMBuildArrayMalloc(), LLVMBuildMalloc(), and LLVMConstTruncOrBitCast().

Constant * ConstantExpr::getUDiv ( Constant C1,
Constant C2,
bool  isExact = false 
) [static]
Constant * ConstantExpr::getUIToFP ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getURem ( Constant C1,
Constant C2 
) [static]

getWithOperandReplaced - Return a constant expression identical to this one, but with the specified operand set to the specified value.

Definition at line 1180 of file Constants.cpp.

References llvm::User::getNumOperands(), llvm::User::getOperand(), llvm::Value::getType(), getWithOperands(), llvm::User::Op(), and llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back().

getWithOperands - This returns the current constant expression with the operands replaced with the specified values. The specified array must have the same number of operands as our current one.

Definition at line 1109 of file Constants.h.

References llvm::Intrinsic::getType().

Referenced by getWithOperandReplaced(), and replaceUsesOfWithOnConstant().

Constant * ConstantExpr::getWithOperands ( ArrayRef< Constant * >  Ops,
Type Ty,
bool  OnlyIfReduced = false 
) const

Get the current expression with the operands replaced.

Return the current constant expression with the operands replaced with Ops and the type with Ty. The new operands must have the same number as the current ones.

If OnlyIfReduced is true, nullptr will be returned unless something gets constant-folded, the type changes, or the expression is otherwise canonicalized. This parameter should almost always be false.

getWithOperands - This returns the current constant expression with the operands replaced with the specified values. The specified array must have the same number of operands as our current one.

Definition at line 1196 of file Constants.cpp.

References llvm::AddrSpaceCast, ExtractElement(), llvm::ExtractValue, llvm::FCmp, llvm::FPExt, llvm::FPToSI, get(), getCast(), getCompare(), getExtractElement(), getExtractValue(), getGetElementPtr(), getIndices(), getInsertElement(), getInsertValue(), llvm::User::getNumOperands(), getOpcode(), llvm::User::getOperand(), getPredicate(), getSelect(), getShuffleVector(), llvm::Value::getType(), llvm::InsertElement, llvm::IntToPtr, llvm::MCID::Select, llvm::SExt, llvm::SIToFP, llvm::ArrayRef< T >::size(), llvm::ArrayRef< T >::slice(), llvm::Value::SubclassOptionalData, and llvm::Trunc.

Constant * ConstantExpr::getXor ( Constant C1,
Constant C2 
) [static]
Constant * ConstantExpr::getZExt ( Constant C,
Type Ty,
bool  OnlyIfReduced = false 
) [static]
Constant * ConstantExpr::getZExtOrBitCast ( Constant C,
Type Ty 
) [static]
Parameters:
CThe constant to zext or bitcast
TyThe type to zext or bitcast C to

Definition at line 1588 of file Constants.cpp.

References getBitCast(), llvm::Type::getScalarSizeInBits(), llvm::Value::getType(), and getZExt().

Referenced by llvm::ConstantFolder::CreateZExtOrBitCast(), llvm::TargetFolder::CreateZExtOrBitCast(), and LLVMConstZExtOrBitCast().

Return true if this is an insertvalue or extractvalue expression, and the getIndices() method may be used.

Definition at line 1159 of file Constants.cpp.

References llvm::ExtractValue, and getOpcode().

Referenced by llvm::ConstantExprKeyType::operator==().

Return true if this is a convert constant expression.

Definition at line 1126 of file Constants.cpp.

References getOpcode().

Referenced by foldConstantCastPair().

Return true if this is a compare constant expression.

Definition at line 1130 of file Constants.cpp.

References llvm::FCmp, and getOpcode().

Referenced by ConstantFoldConstantExpressionImpl(), getPredicate(), and llvm::ConstantExprKeyType::operator==().

Return true if this is a getelementptr expression and all the index operands are compile-time known integers within the corresponding notional static array extents. Note that this is not equivalant to, a subset of, or a superset of the "inbounds" property.

Definition at line 1134 of file Constants.cpp.

References llvm::dyn_cast(), llvm::gep_type_begin(), llvm::gep_type_end(), llvm::APInt::getActiveBits(), getOpcode(), llvm::ConstantInt::getValue(), llvm::ConstantInt::getZExtValue(), and llvm::User::op_begin().

Referenced by evaluateICmpRelation().

void ConstantExpr::replaceUsesOfWithOnConstant ( Value ,
Value ,
Use  
) [override, virtual]

replaceUsesOfWithOnConstant - This method is a special form of User::replaceUsesOfWith (which does not work on constants) that does work on constants. Basically this method goes through the trouble of building a new constant that is equivalent to the current one, with all uses of From replaced with uses of To. After this construction is completed, all of the users of 'this' are replaced to use the new constant, and then 'this' is deleted. In general, you should not call this method, instead, use Value::replaceAllUsesWith, which automatically dispatches to this method as needed.

Reimplemented from llvm::Constant.

Definition at line 2877 of file Constants.cpp.

References llvm::Value::getContext(), llvm::User::getNumOperands(), llvm::User::getOperand(), llvm::Value::getType(), getWithOperands(), llvm::User::Op(), llvm::User::OperandList, and llvm::Constant::replaceUsesOfWithOnConstantImpl().


Friends And Related Function Documentation

friend struct ConstantExprKeyType [friend]

Definition at line 804 of file Constants.h.


The documentation for this class was generated from the following files: