llvm::TargetLoweringBase Class Reference

#include <TargetLowering.h>

Inheritance diagram for llvm::TargetLoweringBase:

Collaboration diagram for llvm::TargetLoweringBase:

Classes
struct	AddrMode
struct	IntrinsicInfo
class	ValueTypeActionImpl

Public Types
enum	LegalizeAction { Legal, Promote, Expand, Custom }
enum	LegalizeTypeAction {   TypeLegal, TypePromoteInteger, TypeExpandInteger, TypeSoftenFloat,   TypeExpandFloat, TypeScalarizeVector, TypeSplitVector, TypeWidenVector }
enum	BooleanContent { UndefinedBooleanContent, ZeroOrOneBooleanContent, ZeroOrNegativeOneBooleanContent }
	Enum that describes how the target represents true/false values. More...
enum	SelectSupportKind { ScalarValSelect, ScalarCondVectorVal, VectorMaskSelect }
	Enum that describes what type of support for selects the target has. More...
typedef std::pair < LegalizeTypeAction, EVT >	LegalizeKind

Public Member Functions
	TargetLoweringBase (const TargetMachine &TM, const TargetLoweringObjectFile *TLOF)
	NOTE: The constructor takes ownership of TLOF. More...
virtual	~TargetLoweringBase ()
const TargetMachine &	getTargetMachine () const
const DataLayout *	getDataLayout () const
const TargetLoweringObjectFile &	getObjFileLowering () const
bool	isBigEndian () const
bool	isLittleEndian () const
virtual MVT	getPointerTy (uint32_t=0) const
unsigned	getPointerSizeInBits (uint32_t AS=0) const
unsigned	getPointerTypeSizeInBits (Type *Ty) const
virtual MVT	getScalarShiftAmountTy (EVT LHSTy) const
EVT	getShiftAmountTy (EVT LHSTy) const
virtual MVT	getVectorIdxTy () const
bool	isSelectExpensive () const
	Return true if the select operation is expensive for this target. More...
virtual bool	isSelectSupported (SelectSupportKind) const
virtual bool	shouldSplitVectorElementType (EVT) const
bool	isIntDivCheap () const
bool	isSlowDivBypassed () const
	Returns true if target has indicated at least one type should be bypassed. More...
const DenseMap< unsigned int, unsigned int > &	getBypassSlowDivWidths () const
bool	isPow2DivCheap () const
	Return true if pow2 div is cheaper than a chain of srl/add/sra. More...
bool	isJumpExpensive () const
bool	isPredictableSelectExpensive () const
virtual bool	isLoadBitCastBeneficial (EVT, EVT) const
virtual EVT	getSetCCResultType (LLVMContext &Context, EVT VT) const
virtual MVT::SimpleValueType	getCmpLibcallReturnType () const
BooleanContent	getBooleanContents (bool isVec) const
Sched::Preference	getSchedulingPreference () const
	Return target scheduling preference. More...
virtual Sched::Preference	getSchedulingPreference (SDNode *) const
virtual const TargetRegisterClass *	getRegClassFor (MVT VT) const
virtual const TargetRegisterClass *	getRepRegClassFor (MVT VT) const
virtual uint8_t	getRepRegClassCostFor (MVT VT) const
bool	isTypeLegal (EVT VT) const
const ValueTypeActionImpl &	getValueTypeActions () const
LegalizeTypeAction	getTypeAction (LLVMContext &Context, EVT VT) const
LegalizeTypeAction	getTypeAction (MVT VT) const
EVT	getTypeToTransformTo (LLVMContext &Context, EVT VT) const
EVT	getTypeToExpandTo (LLVMContext &Context, EVT VT) const
unsigned	getVectorTypeBreakdown (LLVMContext &Context, EVT VT, EVT &IntermediateVT, unsigned &NumIntermediates, MVT &RegisterVT) const
virtual bool	getTgtMemIntrinsic (IntrinsicInfo &, const CallInst &, unsigned) const
virtual bool	isFPImmLegal (const APFloat &, EVT) const
virtual bool	isShuffleMaskLegal (const SmallVectorImpl< int > &, EVT) const
virtual bool	canOpTrap (unsigned Op, EVT VT) const
virtual bool	isVectorClearMaskLegal (const SmallVectorImpl< int > &, EVT) const
LegalizeAction	getOperationAction (unsigned Op, EVT VT) const
bool	isOperationLegalOrCustom (unsigned Op, EVT VT) const
bool	isOperationLegalOrPromote (unsigned Op, EVT VT) const
bool	isOperationExpand (unsigned Op, EVT VT) const
bool	isOperationLegal (unsigned Op, EVT VT) const
	Return true if the specified operation is legal on this target. More...
LegalizeAction	getLoadExtAction (unsigned ExtType, MVT VT) const
bool	isLoadExtLegal (unsigned ExtType, EVT VT) const
	Return true if the specified load with extension is legal on this target. More...
LegalizeAction	getTruncStoreAction (MVT ValVT, MVT MemVT) const
bool	isTruncStoreLegal (EVT ValVT, EVT MemVT) const
LegalizeAction	getIndexedLoadAction (unsigned IdxMode, MVT VT) const
bool	isIndexedLoadLegal (unsigned IdxMode, EVT VT) const
	Return true if the specified indexed load is legal on this target. More...
LegalizeAction	getIndexedStoreAction (unsigned IdxMode, MVT VT) const
bool	isIndexedStoreLegal (unsigned IdxMode, EVT VT) const
	Return true if the specified indexed load is legal on this target. More...
LegalizeAction	getCondCodeAction (ISD::CondCode CC, MVT VT) const
bool	isCondCodeLegal (ISD::CondCode CC, MVT VT) const
	Return true if the specified condition code is legal on this target. More...
MVT	getTypeToPromoteTo (unsigned Op, MVT VT) const
EVT	getValueType (Type *Ty, bool AllowUnknown=false) const
MVT	getSimpleValueType (Type *Ty, bool AllowUnknown=false) const
	Return the MVT corresponding to this LLVM type. See getValueType. More...
virtual unsigned	getByValTypeAlignment (Type *Ty) const
MVT	getRegisterType (MVT VT) const
	Return the type of registers that this ValueType will eventually require. More...
MVT	getRegisterType (LLVMContext &Context, EVT VT) const
	Return the type of registers that this ValueType will eventually require. More...
unsigned	getNumRegisters (LLVMContext &Context, EVT VT) const
virtual bool	ShouldShrinkFPConstant (EVT) const
bool	hasTargetDAGCombine (ISD::NodeType NT) const
unsigned	getMaxStoresPerMemset (bool OptSize) const
	Get maximum # of store operations permitted for llvm.memset. More...
unsigned	getMaxStoresPerMemcpy (bool OptSize) const
	Get maximum # of store operations permitted for llvm.memcpy. More...
unsigned	getMaxStoresPerMemmove (bool OptSize) const
	Get maximum # of store operations permitted for llvm.memmove. More...
virtual bool	allowsUnalignedMemoryAccesses (EVT, bool *=0) const
	Determine if the target supports unaligned memory accesses. More...
virtual EVT	getOptimalMemOpType (uint64_t, unsigned, unsigned, bool, bool, bool, MachineFunction &) const
virtual bool	isSafeMemOpType (MVT) const
bool	usesUnderscoreSetJmp () const
	Determine if we should use _setjmp or setjmp to implement llvm.setjmp. More...
bool	usesUnderscoreLongJmp () const
	Determine if we should use _longjmp or longjmp to implement llvm.longjmp. More...
bool	supportJumpTables () const
	Return whether the target can generate code for jump tables. More...
int	getMinimumJumpTableEntries () const
unsigned	getStackPointerRegisterToSaveRestore () const
unsigned	getExceptionPointerRegister () const
unsigned	getExceptionSelectorRegister () const
unsigned	getJumpBufSize () const
unsigned	getJumpBufAlignment () const
unsigned	getMinStackArgumentAlignment () const
	Return the minimum stack alignment of an argument. More...
unsigned	getMinFunctionAlignment () const
	Return the minimum function alignment. More...
unsigned	getPrefFunctionAlignment () const
	Return the preferred function alignment. More...
unsigned	getPrefLoopAlignment () const
	Return the preferred loop alignment. More...
bool	getInsertFencesForAtomic () const
virtual bool	getStackCookieLocation (unsigned &, unsigned &) const
virtual unsigned	getMaximalGlobalOffset () const
virtual bool	isNoopAddrSpaceCast (unsigned SrcAS, unsigned DestAS) const
	Returns true if a cast between SrcAS and DestAS is a noop. More...
virtual void	resetOperationActions ()
	Reset the operation actions based on target options. More...
virtual bool	GetAddrModeArguments (IntrinsicInst *, SmallVectorImpl< Value * > &, Type *&) const
virtual bool	isLegalAddressingMode (const AddrMode &AM, Type *Ty) const
virtual int	getScalingFactorCost (const AddrMode &AM, Type *Ty) const
	Return the cost of the scaling factor used in the addressing mode represented by AM for this target, for a load/store of the specified type. More...
virtual bool	isLegalICmpImmediate (int64_t) const
virtual bool	isLegalAddImmediate (int64_t) const
virtual bool	isTruncateFree (Type *, Type *) const
virtual bool	allowTruncateForTailCall (Type *, Type *) const
virtual bool	isTruncateFree (EVT, EVT) const
virtual bool	isZExtFree (Type *, Type *) const
virtual bool	isZExtFree (EVT, EVT) const
virtual bool	hasPairedLoad (Type *, unsigned &) const
virtual bool	hasPairedLoad (EVT, unsigned &) const
virtual bool	isZExtFree (SDValue Val, EVT VT2) const
virtual bool	isFNegFree (EVT VT) const
virtual bool	isFAbsFree (EVT VT) const
virtual bool	isFMAFasterThanFMulAndFAdd (EVT) const
virtual bool	isNarrowingProfitable (EVT, EVT) const
void	setLibcallName (RTLIB::Libcall Call, const char *Name)
	Rename the default libcall routine name for the specified libcall. More...
const char *	getLibcallName (RTLIB::Libcall Call) const
	Get the libcall routine name for the specified libcall. More...
void	setCmpLibcallCC (RTLIB::Libcall Call, ISD::CondCode CC)
ISD::CondCode	getCmpLibcallCC (RTLIB::Libcall Call) const
void	setLibcallCallingConv (RTLIB::Libcall Call, CallingConv::ID CC)
	Set the CallingConv that should be used for the specified libcall. More...
CallingConv::ID	getLibcallCallingConv (RTLIB::Libcall Call) const
	Get the CallingConv that should be used for the specified libcall. More...
LegalizeKind	getTypeConversion (LLVMContext &Context, EVT VT) const
Helpers for TargetTransformInfo implementations
int	InstructionOpcodeToISD (unsigned Opcode) const
	Get the ISD node that corresponds to the Instruction class opcode. More...
std::pair< unsigned, MVT >	getTypeLegalizationCost (Type *Ty) const
	Estimate the cost of type-legalization and the legalized type. More...

Static Public Member Functions
static ISD::NodeType	getExtendForContent (BooleanContent Content)

Protected Member Functions
void	initActions ()
	Initialize all of the actions to default values. More...
void	setBooleanContents (BooleanContent Ty)
void	setBooleanVectorContents (BooleanContent Ty)
void	setSchedulingPreference (Sched::Preference Pref)
	Specify the target scheduling preference. More...
void	setUseUnderscoreSetJmp (bool Val)
void	setUseUnderscoreLongJmp (bool Val)
void	setSupportJumpTables (bool Val)
	Indicate whether the target can generate code for jump tables. More...
void	setMinimumJumpTableEntries (int Val)
void	setStackPointerRegisterToSaveRestore (unsigned R)
void	setExceptionPointerRegister (unsigned R)
void	setExceptionSelectorRegister (unsigned R)
void	setSelectIsExpensive (bool isExpensive=true)
void	setJumpIsExpensive (bool isExpensive=true)
void	setIntDivIsCheap (bool isCheap=true)
void	addBypassSlowDiv (unsigned int SlowBitWidth, unsigned int FastBitWidth)
	Tells the code generator which bitwidths to bypass. More...
void	setPow2DivIsCheap (bool isCheap=true)
void	addRegisterClass (MVT VT, const TargetRegisterClass *RC)
void	clearRegisterClasses ()
	Remove all register classes. More...
void	clearOperationActions ()
	Remove all operation actions. More...
virtual std::pair< const TargetRegisterClass *, uint8_t >	findRepresentativeClass (MVT VT) const
void	computeRegisterProperties ()
void	setOperationAction (unsigned Op, MVT VT, LegalizeAction Action)
void	setLoadExtAction (unsigned ExtType, MVT VT, LegalizeAction Action)
void	setTruncStoreAction (MVT ValVT, MVT MemVT, LegalizeAction Action)
void	setIndexedLoadAction (unsigned IdxMode, MVT VT, LegalizeAction Action)
void	setIndexedStoreAction (unsigned IdxMode, MVT VT, LegalizeAction Action)
void	setCondCodeAction (ISD::CondCode CC, MVT VT, LegalizeAction Action)
void	AddPromotedToType (unsigned Opc, MVT OrigVT, MVT DestVT)
void	setTargetDAGCombine (ISD::NodeType NT)
void	setJumpBufSize (unsigned Size)
	Set the target's required jmp_buf buffer size (in bytes); default is 200. More...
void	setJumpBufAlignment (unsigned Align)
void	setMinFunctionAlignment (unsigned Align)
	Set the target's minimum function alignment (in log2(bytes)) More...
void	setPrefFunctionAlignment (unsigned Align)
void	setPrefLoopAlignment (unsigned Align)
void	setMinStackArgumentAlignment (unsigned Align)
	Set the minimum stack alignment of an argument (in log2(bytes)). More...
void	setInsertFencesForAtomic (bool fence)
bool	isLegalRC (const TargetRegisterClass *RC) const

Protected Attributes
unsigned	MaxStoresPerMemset
	Specify maximum number of store instructions per memset call. More...
unsigned	MaxStoresPerMemsetOptSize
unsigned	MaxStoresPerMemcpy
	Specify maximum bytes of store instructions per memcpy call. More...
unsigned	MaxStoresPerMemcpyOptSize
unsigned	MaxStoresPerMemmove
	Specify maximum bytes of store instructions per memmove call. More...
unsigned	MaxStoresPerMemmoveOptSize
bool	PredictableSelectIsExpensive

Detailed Description

This base class for TargetLowering contains the SelectionDAG-independent parts that can be used from the rest of CodeGen.

Definition at line 73 of file TargetLowering.h.

Member Typedef Documentation

typedef std::pair<LegalizeTypeAction, EVT> llvm::TargetLoweringBase::LegalizeKind

LegalizeKind holds the legalization kind that needs to happen to EVT in order to type-legalize it.

Definition at line 102 of file TargetLowering.h.

Member Enumeration Documentation

enum llvm::TargetLoweringBase::BooleanContent

Enum that describes how the target represents true/false values.

Enumerator
UndefinedBooleanContent
ZeroOrOneBooleanContent
ZeroOrNegativeOneBooleanContent

Definition at line 105 of file TargetLowering.h.

enum llvm::TargetLoweringBase::LegalizeAction

This enum indicates whether operations are valid for a target, and if not, what action should be used to make them valid.

Enumerator
Legal
Promote
Expand
Custom

Definition at line 80 of file TargetLowering.h.

enum llvm::TargetLoweringBase::LegalizeTypeAction

This enum indicates whether a types are legal for a target, and if not, what action should be used to make them valid.

Enumerator
TypeLegal
TypePromoteInteger
TypeExpandInteger
TypeSoftenFloat
TypeExpandFloat
TypeScalarizeVector
TypeSplitVector
TypeWidenVector

Definition at line 89 of file TargetLowering.h.

enum llvm::TargetLoweringBase::SelectSupportKind

Enum that describes what type of support for selects the target has.

Enumerator
ScalarValSelect
ScalarCondVectorVal
VectorMaskSelect

Definition at line 112 of file TargetLowering.h.

Constructor & Destructor Documentation

TargetLoweringBase::TargetLoweringBase ( const TargetMachine &  TM, const TargetLoweringObjectFile *  TLOF  )

explicit

NOTE: The constructor takes ownership of TLOF.

Definition at line 660 of file TargetLoweringBase.cpp.

References llvm::Sched::ILP, initActions(), InitCmpLibcallCCs(), InitLibcallCallingConvs(), InitLibcallNames(), llvm::DataLayout::isLittleEndian(), MaxStoresPerMemcpy, MaxStoresPerMemcpyOptSize, MaxStoresPerMemmove, MaxStoresPerMemmoveOptSize, MaxStoresPerMemset, MaxStoresPerMemsetOptSize, PredictableSelectIsExpensive, and UndefinedBooleanContent.

TargetLoweringBase::~TargetLoweringBase ( )

virtual

Definition at line 698 of file TargetLoweringBase.cpp.

Member Function Documentation

void llvm::TargetLoweringBase::addBypassSlowDiv ( unsigned int  SlowBitWidth, unsigned int  FastBitWidth  )

inlineprotected

Tells the code generator which bitwidths to bypass.

Definition at line 941 of file TargetLowering.h.

Referenced by llvm::X86TargetLowering::resetOperationActions().

void llvm::TargetLoweringBase::AddPromotedToType ( unsigned  Opc, MVT  OrigVT, MVT  DestVT  )

inlineprotected

If Opc/OrigVT is specified as being promoted, the promotion code defaults to trying a larger integer/fp until it can find one that works. If that default is insufficient, this method can be used by the target to override the default.

Definition at line 1051 of file TargetLowering.h.

References llvm::MVT::SimpleTy.

Referenced by llvm::AMDGPUTargetLowering::AMDGPUTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), and llvm::X86TargetLowering::resetOperationActions().

void llvm::TargetLoweringBase::addRegisterClass ( MVT  VT, const TargetRegisterClass *  RC  )

inlineprotected

Add the specified register class as an available regclass for the specified value type. This indicates the selector can handle values of that class natively.

Definition at line 952 of file TargetLowering.h.

References llvm::array_lengthof(), and llvm::MVT::SimpleTy.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::MipsSETargetLowering::addMSAFloatType(), llvm::MipsSETargetLowering::addMSAIntType(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::Mips16TargetLowering::Mips16TargetLowering(), llvm::MipsSETargetLowering::MipsSETargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

virtual bool llvm::TargetLoweringBase::allowsUnalignedMemoryAccesses ( EVT  , bool *  = 0  ) const

inlinevirtual

Determine if the target supports unaligned memory accesses.

This function returns true if the target allows unaligned memory accesses. of the specified type. If true, it also returns whether the unaligned memory access is "fast" in the second argument by reference. This is used, for example, in situations where an array copy/move/set is converted to a sequence of store operations. It's use helps to ensure that such replacements don't generate code that causes an alignment error (trap) on the target machine.

Reimplemented in llvm::X86TargetLowering, llvm::PPCTargetLowering, llvm::ARMTargetLowering, llvm::SystemZTargetLowering, llvm::SITargetLowering, llvm::MipsSETargetLowering, and llvm::Mips16TargetLowering.

Definition at line 717 of file TargetLowering.h.

Referenced by FindOptimalMemOpLowering().

virtual bool llvm::TargetLoweringBase::allowTruncateForTailCall ( Type *  , Type *    ) const

inlinevirtual

Return true if a truncation from Ty1 to Ty2 is permitted when deciding whether a call is in tail position. Typically this means that both results would be assigned to the same register or stack slot, but it could mean the target performs adequate checks of its own before proceeding with the tail call.

Reimplemented in llvm::X86TargetLowering, llvm::ARMTargetLowering, llvm::SystemZTargetLowering, and llvm::HexagonTargetLowering.

Definition at line 1181 of file TargetLowering.h.

Referenced by getNoopInput().

bool TargetLoweringBase::canOpTrap ( unsigned  Op, EVT  VT  ) const

virtual

Returns true if the operation can trap for the value type.

VT must be a legal type. By default, we optimistically assume most operations don't trap except for divide and remainder.

canOpTrap - Returns true if the operation can trap for the value type. VT must be a legal type.

Definition at line 823 of file TargetLoweringBase.cpp.

References llvm::ISD::FDIV, llvm::ISD::FREM, isTypeLegal(), llvm::ISD::SDIV, llvm::ISD::SREM, llvm::ISD::UDIV, and llvm::ISD::UREM.

void llvm::TargetLoweringBase::clearOperationActions ( )

inlineprotected

Remove all operation actions.

Definition at line 966 of file TargetLowering.h.

void llvm::TargetLoweringBase::clearRegisterClasses ( )

inlineprotected

Remove all register classes.

Definition at line 959 of file TargetLowering.h.

References llvm::MVT::LAST_VALUETYPE, and llvm::Intrinsic::memset.

Referenced by llvm::Mips16TargetLowering::Mips16TargetLowering().

void TargetLoweringBase::computeRegisterProperties ( )

protected

Once all of the register classes are added, this allows us to compute derived properties we expose.

computeRegisterProperties - Once all of the register classes are added, this allows us to compute derived properties we expose.

Definition at line 927 of file TargetLoweringBase.cpp.

References llvm::MVT::f128, llvm::MVT::f32, llvm::MVT::f64, findRepresentativeClass(), llvm::MVT::FIRST_VECTOR_VALUETYPE, llvm::MVT::getPow2VectorType(), llvm::MVT::getScalarType(), llvm::MVT::getSizeInBits(), llvm::MVT::getVectorElementType(), llvm::MVT::getVectorNumElements(), getVectorTypeBreakdownMVT(), llvm::MVT::i1, llvm::MVT::i128, llvm::MVT::i32, llvm::MVT::i64, llvm::MVT::isInteger(), isTypeLegal(), llvm::MVT::isVoid, llvm::MVT::LAST_INTEGER_VALUETYPE, llvm::MVT::LAST_VALUETYPE, llvm::MVT::LAST_VECTOR_VALUETYPE, llvm::MVT::MAX_ALLOWED_VALUETYPE, llvm::MVT::Other, llvm::MVT::ppcf128, llvm::MSP430ISD::RRC, llvm::TargetLoweringBase::ValueTypeActionImpl::setTypeAction(), shouldSplitVectorElementType(), llvm::tie(), TypeExpandFloat, TypeExpandInteger, TypePromoteInteger, TypeScalarizeVector, TypeSoftenFloat, TypeSplitVector, and TypeWidenVector.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::Mips16TargetLowering::Mips16TargetLowering(), llvm::MipsSETargetLowering::MipsSETargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

std::pair< const TargetRegisterClass *, uint8_t > TargetLoweringBase::findRepresentativeClass ( MVT  VT ) const

protectedvirtual

Return the largest legal super-reg register class of the register class for the specified type and its associated "cost".

findRepresentativeClass - Return the largest legal super-reg register class of the register class for the specified type and its associated "cost".

Reimplemented in llvm::X86TargetLowering, and llvm::ARMTargetLowering.

Definition at line 900 of file TargetLoweringBase.cpp.

References llvm::TargetRegisterInfo::getNumRegClasses(), llvm::TargetRegisterInfo::getRegClass(), llvm::TargetMachine::getRegisterInfo(), llvm::TargetRegisterClass::getSize(), getTargetMachine(), isLegalRC(), llvm::SuperRegClassIterator::isValid(), llvm::BitVector::setBitsInMask(), and llvm::MVT::SimpleTy.

Referenced by computeRegisterProperties(), llvm::ARMTargetLowering::findRepresentativeClass(), and llvm::X86TargetLowering::findRepresentativeClass().

virtual bool llvm::TargetLoweringBase::GetAddrModeArguments ( IntrinsicInst *  , SmallVectorImpl< Value * > &  , Type *&    ) const

inlinevirtual

CodeGenPrepare sinks address calculations into the same BB as Load/Store instructions reading the address. This allows as much computation as possible to be done in the address mode for that operand. This hook lets targets also pass back when this should be done on intrinsics which load/store.

Definition at line 1114 of file TargetLowering.h.

BooleanContent llvm::TargetLoweringBase::getBooleanContents ( bool  isVec ) const

inline

For targets without i1 registers, this gives the nature of the high-bits of boolean values held in types wider than i1.

"Boolean values" are special true/false values produced by nodes like SETCC and consumed (as the condition) by nodes like SELECT and BRCOND. Not to be confused with general values promoted from i1. Some cpus distinguish between vectors of boolean and scalars; the isVec parameter selects between the two kinds. For example on X86 a scalar boolean should be zero extended from i1, while the elements of a vector of booleans should be sign extended from i1.

Definition at line 240 of file TargetLowering.h.

Referenced by llvm::SelectionDAG::ComputeMaskedBits(), llvm::SelectionDAG::ComputeNumSignBits(), llvm::SelectionDAG::FoldSetCC(), and llvm::TargetLowering::SimplifySetCC().

const DenseMap<unsigned int, unsigned int>& llvm::TargetLoweringBase::getBypassSlowDivWidths ( ) const

inline

Returns map of slow types for division or remainder with corresponding fast types

Definition at line 190 of file TargetLowering.h.

unsigned TargetLoweringBase::getByValTypeAlignment ( Type *  Ty ) const

virtual

Return the desired alignment for ByVal aggregate function arguments in the caller parameter area. This is the actual alignment, not its logarithm.

getByValTypeAlignment - Return the desired alignment for ByVal aggregate function arguments in the caller parameter area. This is the actual alignment, not its logarithm.

Reimplemented in llvm::X86TargetLowering, and llvm::PPCTargetLowering.

Definition at line 1232 of file TargetLoweringBase.cpp.

References llvm::DataLayout::getCallFrameTypeAlignment().

Referenced by llvm::TargetLowering::LowerCallTo().

ISD::CondCode llvm::TargetLoweringBase::getCmpLibcallCC ( RTLIB::Libcall  Call ) const

inline

Get the CondCode that's to be used to test the result of the comparison libcall against zero.

Definition at line 1298 of file TargetLowering.h.

References llvm::Call.

Referenced by llvm::TargetLowering::softenSetCCOperands().

MVT::SimpleValueType TargetLoweringBase::getCmpLibcallReturnType ( ) const

virtual

Return the ValueType for comparison libcalls. Comparions libcalls include floating point comparion calls, and Ordered/Unordered check calls on floating point numbers.

Definition at line 1101 of file TargetLoweringBase.cpp.

References llvm::MVT::i32.

Referenced by llvm::TargetLowering::softenSetCCOperands().

LegalizeAction llvm::TargetLoweringBase::getCondCodeAction ( ISD::CondCode  CC, MVT  VT  ) const

inline

Return how the condition code should be treated: either it is legal, needs to be expanded to some other code sequence, or the target has a custom expander for it.

Definition at line 533 of file TargetLowering.h.

References llvm::array_lengthof(), Promote, and llvm::MVT::SimpleTy.

Referenced by isCondCodeLegal(), and llvm::TargetLowering::SimplifySetCC().

const DataLayout* llvm::TargetLoweringBase::getDataLayout ( ) const

inline

Definition at line 146 of file TargetLowering.h.

Referenced by llvm::ComputeValueVTs(), llvm::SelectionDAG::CreateStackTemporary(), llvm::ARMSelectionDAGInfo::EmitTargetCodeForMemset(), FindOptimalMemOpLowering(), llvm::SelectionDAG::getConstantPool(), llvm::SelectionDAG::getMemcpy(), getMemcpyLoadsAndStores(), llvm::SelectionDAG::getMemmove(), getMemmoveLoadsAndStores(), llvm::SelectionDAG::getMemset(), getMemsetStores(), llvm::NVPTXTargetLowering::getPrototype(), llvm::SparcTargetLowering::getSRetArgSize(), llvm::AArch64TargetLowering::getTgtMemIntrinsic(), llvm::ARMTargetLowering::getTgtMemIntrinsic(), llvm::SelectionDAG::InferPtrAlignment(), llvm::NVPTXTargetLowering::LowerCall(), llvm::SelectionDAGBuilder::LowerCallTo(), llvm::TargetLowering::LowerCallTo(), llvm::NVPTXTargetLowering::LowerFormalArguments(), llvm::AArch64TargetLowering::LowerGlobalAddressELFSmall(), llvm::NVPTXTargetLowering::LowerReturn(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::TargetLowering::ParseConstraints(), llvm::PPCTargetLowering::PerformDAGCombine(), llvm::FunctionLoweringInfo::set(), llvm::TargetLowering::SimplifySetCC(), llvm::SelectionDAGBuilder::visitSPDescriptorParent(), llvm::X86TargetLowering::X86TargetLowering(), and XFormVExtractWithShuffleIntoLoad().

unsigned llvm::TargetLoweringBase::getExceptionPointerRegister ( ) const

inline

If a physical register, this returns the register that receives the exception address on entry to a landing pad.

Definition at line 779 of file TargetLowering.h.

unsigned llvm::TargetLoweringBase::getExceptionSelectorRegister ( ) const

inline

If a physical register, this returns the register that receives the exception typeid on entry to a landing pad.

Definition at line 785 of file TargetLowering.h.

static ISD::NodeType llvm::TargetLoweringBase::getExtendForContent ( BooleanContent  Content )

inlinestatic

Definition at line 120 of file TargetLowering.h.

References llvm::ISD::ANY_EXTEND, llvm_unreachable, llvm::ISD::SIGN_EXTEND, UndefinedBooleanContent, llvm::ISD::ZERO_EXTEND, ZeroOrNegativeOneBooleanContent, and ZeroOrOneBooleanContent.

LegalizeAction llvm::TargetLoweringBase::getIndexedLoadAction ( unsigned  IdxMode, MVT  VT  ) const

inline

Return how the indexed load should be treated: either it is legal, needs to be promoted to a larger size, needs to be expanded to some other code sequence, or the target has a custom expander for it.

Definition at line 497 of file TargetLowering.h.

References llvm::ISD::LAST_INDEXED_MODE, llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by isIndexedLoadLegal().

LegalizeAction llvm::TargetLoweringBase::getIndexedStoreAction ( unsigned  IdxMode, MVT  VT  ) const

inline

Return how the indexed store should be treated: either it is legal, needs to be promoted to a larger size, needs to be expanded to some other code sequence, or the target has a custom expander for it.

Definition at line 515 of file TargetLowering.h.

References llvm::ISD::LAST_INDEXED_MODE, llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by isIndexedStoreLegal().

bool llvm::TargetLoweringBase::getInsertFencesForAtomic ( ) const

inline

Return whether the DAG builder should automatically insert fences and reduce ordering for atomics.

Definition at line 823 of file TargetLowering.h.

unsigned llvm::TargetLoweringBase::getJumpBufAlignment ( ) const

inline

Returns the target's jmp_buf alignment in bytes (if never set, the default is 0)

Definition at line 797 of file TargetLowering.h.

unsigned llvm::TargetLoweringBase::getJumpBufSize ( ) const

inline

Returns the target's jmp_buf size in bytes (if never set, the default is 200)

Definition at line 791 of file TargetLowering.h.

CallingConv::ID llvm::TargetLoweringBase::getLibcallCallingConv ( RTLIB::Libcall  Call ) const

inline

Get the CallingConv that should be used for the specified libcall.

Definition at line 1308 of file TargetLowering.h.

References llvm::Call.

Referenced by llvm::ARMSelectionDAGInfo::EmitTargetCodeForMemset(), llvm::SelectionDAG::getMemcpy(), llvm::SelectionDAG::getMemmove(), llvm::SelectionDAG::getMemset(), llvm::AArch64TargetLowering::LowerF128ToCall(), and llvm::TargetLowering::makeLibCall().

const char* llvm::TargetLoweringBase::getLibcallName ( RTLIB::Libcall  Call ) const

inline

Get the libcall routine name for the specified libcall.

Definition at line 1286 of file TargetLowering.h.

References llvm::Call.

Referenced by accumulateAndSortLibcalls(), llvm::ARMSelectionDAGInfo::EmitTargetCodeForMemset(), llvm::SelectionDAG::getMemcpy(), llvm::SelectionDAG::getMemmove(), llvm::SelectionDAG::getMemset(), isDivRemLibcallAvailable(), isSinCosLibcallAvailable(), LowerF128_FPEXTEND(), LowerF128_FPROUND(), llvm::AArch64TargetLowering::LowerF128ToCall(), LowerFP_TO_SINT(), LowerFP_TO_UINT(), llvm::SparcTargetLowering::LowerOperation(), LowerSINT_TO_FP(), LowerUINT_TO_FP(), llvm::TargetLowering::makeLibCall(), and llvm::SparcTargetLowering::ReplaceNodeResults().

LegalizeAction llvm::TargetLoweringBase::getLoadExtAction ( unsigned  ExtType, MVT  VT  ) const

inline

Return how this load with extension should be treated: either it is legal, needs to be promoted to a larger size, needs to be expanded to some other code sequence, or the target has a custom expander for it.

Definition at line 464 of file TargetLowering.h.

References llvm::ISD::LAST_LOADEXT_TYPE, llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by isLoadExtLegal().

virtual unsigned llvm::TargetLoweringBase::getMaximalGlobalOffset ( ) const

inlinevirtual

Returns the maximal possible offset which can be used for loads / stores from the global.

Reimplemented in llvm::ARMTargetLowering.

Definition at line 837 of file TargetLowering.h.

unsigned llvm::TargetLoweringBase::getMaxStoresPerMemcpy ( bool  OptSize ) const

inline

Get maximum # of store operations permitted for llvm.memcpy.

This function returns the maximum number of store operations permitted to replace a call to llvm.memcpy. The value is set by the target at the performance threshold for such a replacement. If OptSize is true, return the limit for functions that have OptSize attribute.

Definition at line 694 of file TargetLowering.h.

References MaxStoresPerMemcpy, and MaxStoresPerMemcpyOptSize.

Referenced by getMemcpyLoadsAndStores().

unsigned llvm::TargetLoweringBase::getMaxStoresPerMemmove ( bool  OptSize ) const

inline

Get maximum # of store operations permitted for llvm.memmove.

This function returns the maximum number of store operations permitted to replace a call to llvm.memmove. The value is set by the target at the performance threshold for such a replacement. If OptSize is true, return the limit for functions that have OptSize attribute.

Definition at line 704 of file TargetLowering.h.

References MaxStoresPerMemmove, and MaxStoresPerMemmoveOptSize.

Referenced by getMemmoveLoadsAndStores().

unsigned llvm::TargetLoweringBase::getMaxStoresPerMemset ( bool  OptSize ) const

inline

Get maximum # of store operations permitted for llvm.memset.

This function returns the maximum number of store operations permitted to replace a call to llvm.memset. The value is set by the target at the performance threshold for such a replacement. If OptSize is true, return the limit for functions that have OptSize attribute.

Definition at line 684 of file TargetLowering.h.

References MaxStoresPerMemset, and MaxStoresPerMemsetOptSize.

Referenced by getMemsetStores().

unsigned llvm::TargetLoweringBase::getMinFunctionAlignment ( ) const

inline

Return the minimum function alignment.

Definition at line 807 of file TargetLowering.h.

Referenced by llvm::MachineFunction::MachineFunction().

int llvm::TargetLoweringBase::getMinimumJumpTableEntries ( ) const

inline

Return integer threshold on number of blocks to use jump tables rather than if sequence.

Definition at line 767 of file TargetLowering.h.

unsigned llvm::TargetLoweringBase::getMinStackArgumentAlignment ( ) const

inline

Return the minimum stack alignment of an argument.

Definition at line 802 of file TargetLowering.h.

unsigned llvm::TargetLoweringBase::getNumRegisters ( LLVMContext &  Context, EVT  VT  ) const

inline

Return the number of registers that this ValueType will eventually require.

This is one for any types promoted to live in larger registers, but may be more than one for types (like i64) that are split into pieces. For types like i140, which are first promoted then expanded, it is the number of registers needed to hold all the bits of the original type. For an i140 on a 32 bit machine this means 5 registers.

Definition at line 646 of file TargetLowering.h.

References llvm::array_lengthof(), getRegisterType(), llvm::EVT::getSimpleVT(), llvm::MVT::getSizeInBits(), llvm::EVT::getSizeInBits(), getVectorTypeBreakdown(), llvm::EVT::isInteger(), llvm::EVT::isSimple(), llvm::EVT::isVector(), llvm_unreachable, and llvm::MVT::SimpleTy.

Referenced by llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo(), llvm::FunctionLoweringInfo::CreateRegs(), GetRegistersForValue(), llvm::GetReturnInfo(), llvm::NVPTXTargetLowering::LowerCall(), llvm::TargetLowering::LowerCallTo(), llvm::NVPTXTargetLowering::LowerFormalArguments(), and llvm::FunctionLoweringInfo::set().

const TargetLoweringObjectFile& llvm::TargetLoweringBase::getObjFileLowering ( ) const

inline

Definition at line 147 of file TargetLowering.h.

Referenced by addPassesToGenerateCode(), llvm::AsmPrinter::getObjFileLowering(), and llvm::HexagonTargetLowering::LowerGLOBALADDRESS().

LegalizeAction llvm::TargetLoweringBase::getOperationAction ( unsigned  Op, EVT  VT  ) const

inline

Return how this operation should be treated: either it is legal, needs to be promoted to a larger size, needs to be expanded to some other code sequence, or the target has a custom expander for it.

Definition at line 421 of file TargetLowering.h.

References llvm::array_lengthof(), Custom, Expand, llvm::EVT::getSimpleVT(), I, llvm::EVT::isExtended(), and llvm::MVT::SimpleTy.

Referenced by getTypeToPromoteTo(), isOperationExpand(), isOperationLegal(), isOperationLegalOrCustom(), and isOperationLegalOrPromote().

virtual EVT llvm::TargetLoweringBase::getOptimalMemOpType ( uint64_t  , unsigned  , unsigned  , bool  , bool  , bool  , MachineFunction &    ) const

inlinevirtual

Returns the target specific optimal type for load and store operations as a result of memset, memcpy, and memmove lowering.

If DstAlign is zero that means it's safe to destination alignment can satisfy any constraint. Similarly if SrcAlign is zero it means there isn't a need to check it against alignment requirement, probably because the source does not need to be loaded. If 'IsMemset' is true, that means it's expanding a memset. If 'ZeroMemset' is true, that means it's a memset of zero. 'MemcpyStrSrc' indicates whether the memcpy source is constant so it does not need to be loaded. It returns EVT::Other if the type should be determined using generic target-independent logic.

Reimplemented in llvm::X86TargetLowering, llvm::PPCTargetLowering, and llvm::ARMTargetLowering.

Definition at line 732 of file TargetLowering.h.

References llvm::MVT::Other.

Referenced by FindOptimalMemOpLowering().

unsigned TargetLoweringBase::getPointerSizeInBits

(

uint32_t

AS = 0

)

const

Definition at line 801 of file TargetLoweringBase.cpp.

References llvm::DataLayout::getPointerSizeInBits().

Referenced by getPointerTy(), and getPointerTypeSizeInBits().

MVT TargetLoweringBase::getPointerTy ( uint32_t  AS = 0 ) const

virtual

Return the pointer type for the given address space, defaults to the pointer type from the data layout. FIXME: The default needs to be removed once all the code is updated.

Definition at line 797 of file TargetLoweringBase.cpp.

References llvm::MVT::getIntegerVT(), and getPointerSizeInBits().

Referenced by AddCombineToVPADDL(), llvm::X86TargetLowering::BuildFILD(), CheckType(), CheckValueType(), llvm::SelectionDAG::CreateStackTemporary(), llvm::PPCTargetLowering::emitEHSjLjLongJmp(), llvm::PPCTargetLowering::emitEHSjLjSetJmp(), llvm::X86SelectionDAGInfo::EmitTargetCodeForMemset(), llvm::ARMSelectionDAGInfo::EmitTargetCodeForMemset(), expandExp(), expandExp2(), expandPow(), ExpandUnalignedLoad(), ExpandUnalignedStore(), FindOptimalMemOpLowering(), getCopyFromParts(), GetExponent(), llvm::SelectionDAG::getIntPtrConstant(), llvm::SelectionDAG::getMemcpy(), llvm::SelectionDAG::getMemmove(), llvm::SelectionDAG::getMemset(), getNoopInput(), llvm::X86TargetLowering::getPICJumpTableRelocBase(), llvm::TargetLowering::getPICJumpTableRelocBase(), llvm::NVPTXTargetLowering::getPrototype(), llvm::FastISel::getRegForGEPIndex(), llvm::MSP430TargetLowering::getReturnAddressFrameIndex(), llvm::X86TargetLowering::getReturnAddressFrameIndex(), getSetCCResultType(), llvm::ARMTargetLowering::getSetCCResultType(), llvm::SelectionDAGBuilder::getValueImpl(), getValueType(), getVectorIdxTy(), InsertFenceForAtomic(), isBLACompatibleAddress(), llvm::MSP430TargetLowering::LowerBlockAddress(), llvm::HexagonTargetLowering::LowerBlockAddress(), llvm::AArch64TargetLowering::LowerBlockAddress(), llvm::HexagonTargetLowering::LowerBR_JT(), llvm::HexagonTargetLowering::LowerCall(), llvm::NVPTXTargetLowering::LowerCall(), llvm::AArch64TargetLowering::LowerCall(), llvm::SystemZTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), llvm::SparcTargetLowering::LowerCall_64(), llvm::SelectionDAGBuilder::LowerCallTo(), llvm::HexagonTargetLowering::LowerEH_RETURN(), llvm::MSP430TargetLowering::LowerExternalSymbol(), llvm::SparcTargetLowering::LowerF128_LibCallArg(), llvm::SparcTargetLowering::LowerF128Compare(), llvm::SparcTargetLowering::LowerF128Op(), llvm::AArch64TargetLowering::LowerF128ToCall(), llvm::NVPTXTargetLowering::LowerFormalArguments(), llvm::AArch64TargetLowering::LowerFormalArguments(), llvm::SystemZTargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_32(), llvm::SparcTargetLowering::LowerFormalArguments_64(), LowerFSINCOS(), llvm::AMDGPUTargetLowering::LowerGlobalAddress(), llvm::NVPTXTargetLowering::LowerGlobalAddress(), llvm::MSP430TargetLowering::LowerGlobalAddress(), llvm::HexagonTargetLowering::LowerGLOBALADDRESS(), llvm::AArch64TargetLowering::LowerGlobalAddressELFLarge(), llvm::AArch64TargetLowering::LowerGlobalAddressELFSmall(), llvm::SparcTargetLowering::LowerGlobalTLSAddress(), llvm::AArch64TargetLowering::LowerGlobalTLSAddress(), LowerINTRINSIC_W_CHAIN(), llvm::MSP430TargetLowering::LowerJumpTable(), llvm::AArch64TargetLowering::LowerJumpTable(), LowerMemOpCallTo(), llvm::SparcTargetLowering::LowerReturn_32(), llvm::MSP430TargetLowering::LowerRETURNADDR(), LowerRETURNADDR(), LowerSIGN_EXTEND_AVX512(), llvm::AArch64TargetLowering::LowerTLSDescCall(), llvm::MSP430TargetLowering::LowerVASTART(), llvm::AArch64TargetLowering::LowerVASTART(), LowerVASTART(), LowerVectorBroadcast(), LowerZERO_EXTEND_AVX512(), llvm::SparcTargetLowering::makeAddress(), llvm::TargetLowering::makeLibCall(), llvm::PPCTargetLowering::PerformDAGCombine(), PerformEXTRACT_VECTOR_ELTCombine(), PerformLOADCombine(), PerformSTORECombine(), PrepareCall(), llvm::AArch64TargetLowering::SaveVarArgRegisters(), llvm::PPCTargetLowering::SelectAddressRegImm(), llvm::SelectionDAGISel::SelectCodeCommon(), llvm::TargetLowering::SimplifySetCC(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), llvm::SelectionDAGBuilder::visitBitTestHeader(), llvm::SelectionDAGBuilder::visitJumpTable(), llvm::SelectionDAGBuilder::visitJumpTableHeader(), and llvm::SelectionDAGBuilder::visitSPDescriptorParent().

unsigned TargetLoweringBase::getPointerTypeSizeInBits

(

Type *

Ty

)

const

Definition at line 805 of file TargetLoweringBase.cpp.

References llvm::Type::getPointerAddressSpace(), getPointerSizeInBits(), and llvm::Type::isPointerTy().

Referenced by llvm::SelectionDAG::getGlobalAddress(), and llvm::SelectionDAG::InferPtrAlignment().

unsigned llvm::TargetLoweringBase::getPrefFunctionAlignment ( ) const

inline

Return the preferred function alignment.

Definition at line 812 of file TargetLowering.h.

Referenced by llvm::MachineFunction::MachineFunction().

unsigned llvm::TargetLoweringBase::getPrefLoopAlignment ( ) const

inline

Return the preferred loop alignment.

Definition at line 817 of file TargetLowering.h.

virtual const TargetRegisterClass* llvm::TargetLoweringBase::getRegClassFor ( MVT  VT ) const

inlinevirtual

Return the register class that should be used for the specified value type.

Reimplemented in llvm::ARMTargetLowering.

Definition at line 258 of file TargetLowering.h.

References llvm::MVT::SimpleTy.

Referenced by llvm::PPCTargetLowering::emitEHSjLjSetJmp(), llvm::FastISel::FastEmitInst_extractsubreg(), llvm::ARMTargetLowering::getRegClassFor(), llvm::AArch64TargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_64(), llvm::HexagonTargetLowering::LowerRETURNADDR(), llvm::AArch64TargetLowering::LowerRETURNADDR(), LowerRETURNADDR(), llvm::ResourcePriorityQueue::rawRegPressureDelta(), and llvm::ResourcePriorityQueue::scheduledNode().

MVT llvm::TargetLoweringBase::getRegisterType ( MVT  VT ) const

inline

Return the type of registers that this ValueType will eventually require.

Definition at line 612 of file TargetLowering.h.

References llvm::array_lengthof(), and llvm::MVT::SimpleTy.

Referenced by llvm::FunctionLoweringInfo::CreateRegs(), ExpandUnalignedLoad(), ExpandUnalignedStore(), getNumRegisters(), getRegisterType(), llvm::GetReturnInfo(), llvm::TargetLowering::getTypeForExtArgOrReturn(), getVectorTypeBreakdown(), getVectorTypeBreakdownMVT(), and llvm::TargetLowering::LowerCallTo().

MVT llvm::TargetLoweringBase::getRegisterType ( LLVMContext &  Context, EVT  VT  ) const

inline

Return the type of registers that this ValueType will eventually require.

Definition at line 618 of file TargetLowering.h.

References llvm::array_lengthof(), getRegisterType(), llvm::EVT::getSimpleVT(), getTypeToTransformTo(), getVectorTypeBreakdown(), llvm::EVT::isInteger(), llvm::EVT::isSimple(), llvm::EVT::isVector(), llvm_unreachable, and llvm::MVT::SimpleTy.

virtual uint8_t llvm::TargetLoweringBase::getRepRegClassCostFor ( MVT  VT ) const

inlinevirtual

Return the cost of the 'representative' register class for the specified value type.

Definition at line 278 of file TargetLowering.h.

References llvm::MVT::SimpleTy.

Referenced by GetCostForDef().

virtual const TargetRegisterClass* llvm::TargetLoweringBase::getRepRegClassFor ( MVT  VT ) const

inlinevirtual

Return the 'representative' register class for the specified value type.

The 'representative' register class is the largest legal super-reg register class for the register class of the value type. For example, on i386 the rep register class for i8, i16, and i32 are GR32; while the rep register class is GR64 on x86_64.

Reimplemented in llvm::MipsSETargetLowering.

Definition at line 271 of file TargetLowering.h.

References llvm::MVT::SimpleTy.

Referenced by GetCostForDef(), and llvm::MipsSETargetLowering::getRepRegClassFor().

MVT TargetLoweringBase::getScalarShiftAmountTy ( EVT  LHSTy ) const

virtual

Reimplemented in llvm::X86TargetLowering, llvm::PPCTargetLowering, llvm::MipsTargetLowering, llvm::SystemZTargetLowering, llvm::NVPTXTargetLowering, llvm::XCoreTargetLowering, llvm::SparcTargetLowering, llvm::MSP430TargetLowering, and llvm::SITargetLowering.

Definition at line 810 of file TargetLoweringBase.cpp.

References llvm::MVT::getIntegerVT(), and llvm::DataLayout::getPointerSize().

Referenced by getShiftAmountTy(), and getVShift().

virtual int llvm::TargetLoweringBase::getScalingFactorCost ( const AddrMode &  AM, Type *  Ty  ) const

inlinevirtual

Return the cost of the scaling factor used in the addressing mode represented by AM for this target, for a load/store of the specified type.

If the AM is supported, the return value must be >= 0. If the AM is not supported, it returns a negative value. TODO: Handle pre/postinc as well.

Definition at line 1149 of file TargetLowering.h.

References isLegalAddressingMode().

Sched::Preference llvm::TargetLoweringBase::getSchedulingPreference ( ) const

inline

Return target scheduling preference.

Definition at line 245 of file TargetLowering.h.

Referenced by llvm::createDefaultScheduler(), llvm::PPCTargetLowering::getSchedulingPreference(), and llvm::ScheduleDAGSDNodes::newSUnit().

virtual Sched::Preference llvm::TargetLoweringBase::getSchedulingPreference ( SDNode *  ) const

inlinevirtual

Some scheduler, e.g. hybrid, can switch to different scheduling heuristics for different nodes. This function returns the preference (or none) for the given node.

Reimplemented in llvm::PPCTargetLowering, and llvm::ARMTargetLowering.

Definition at line 252 of file TargetLowering.h.

References llvm::Sched::None.

EVT TargetLoweringBase::getSetCCResultType ( LLVMContext &  Context, EVT  VT  ) const

virtual

Return the ValueType of the result of SETCC operations. Also used to obtain the target's preferred type for the condition operand of SELECT and BRCOND nodes. In the case of BRCOND the argument passed is MVT::Other since there are no other operands to get a type hint from.

Reimplemented in llvm::X86TargetLowering, llvm::PPCTargetLowering, llvm::AArch64TargetLowering, llvm::ARMTargetLowering, llvm::MipsTargetLowering, llvm::SystemZTargetLowering, llvm::HexagonTargetLowering, llvm::NVPTXTargetLowering, llvm::SITargetLowering, and llvm::R600TargetLowering.

Definition at line 1096 of file TargetLoweringBase.cpp.

References getPointerTy(), llvm::EVT::isVector(), and llvm::MVT::SimpleTy.

Referenced by PerformSELECTCombine(), llvm::TargetLowering::softenSetCCOperands(), llvm::SelectionDAGBuilder::visitBitTestCase(), llvm::SelectionDAGBuilder::visitBitTestHeader(), llvm::SelectionDAGBuilder::visitJumpTableHeader(), and llvm::SelectionDAGBuilder::visitSPDescriptorParent().

EVT TargetLoweringBase::getShiftAmountTy

(

EVT

LHSTy

)

const

Definition at line 814 of file TargetLoweringBase.cpp.

References getScalarShiftAmountTy(), llvm::EVT::isInteger(), and llvm::EVT::isVector().

Referenced by llvm::TargetLowering::BuildExactSDIV(), llvm::TargetLowering::BuildSDIV(), llvm::TargetLowering::BuildUDIV(), ExpandUnalignedLoad(), ExpandUnalignedStore(), llvm::SelectionDAG::getShiftAmountOperand(), LowerVECTOR_SHUFFLEv16i8(), llvm::TargetLowering::SimplifyDemandedBits(), and llvm::TargetLowering::SimplifySetCC().

MVT llvm::TargetLoweringBase::getSimpleValueType ( Type *  Ty, bool  AllowUnknown = false  ) const

inline

Return the MVT corresponding to this LLVM type. See getValueType.

Definition at line 603 of file TargetLowering.h.

References llvm::EVT::getSimpleVT(), and getValueType().

Referenced by llvm::TargetLowering::ParseConstraints().

virtual bool llvm::TargetLoweringBase::getStackCookieLocation ( unsigned &  , unsigned &    ) const

inlinevirtual

Return true if the target stores stack protector cookies at a fixed offset in some non-standard address space, and populates the address space and offset as appropriate.

Reimplemented in llvm::X86TargetLowering.

Definition at line 830 of file TargetLowering.h.

Referenced by CreatePrologue().

unsigned llvm::TargetLoweringBase::getStackPointerRegisterToSaveRestore ( ) const

inline

If a physical register, this specifies the register that llvm.savestack/llvm.restorestack should save and restore.

Definition at line 773 of file TargetLowering.h.

Referenced by llvm::TargetInstrInfo::isSchedulingBoundary(), and llvm::HexagonTargetLowering::LowerDYNAMIC_STACKALLOC().

const TargetMachine& llvm::TargetLoweringBase::getTargetMachine ( ) const

inline

Definition at line 145 of file TargetLowering.h.

Referenced by llvm::SITargetLowering::AdjustInstrPostInstrSelection(), llvm::ARMTargetLowering::AdjustInstrPostInstrSelection(), llvm::AArch64TargetLowering::emitAtomicBinary(), llvm::PPCTargetLowering::EmitAtomicBinary(), llvm::AArch64TargetLowering::emitAtomicBinaryMinMax(), llvm::AArch64TargetLowering::emitAtomicCmpSwap(), llvm::PPCTargetLowering::emitEHSjLjLongJmp(), llvm::PPCTargetLowering::emitEHSjLjSetJmp(), llvm::AArch64TargetLowering::EmitF128CSEL(), llvm::SITargetLowering::EmitInstrWithCustomInserter(), llvm::SparcTargetLowering::EmitInstrWithCustomInserter(), llvm::XCoreTargetLowering::EmitInstrWithCustomInserter(), llvm::MSP430TargetLowering::EmitInstrWithCustomInserter(), llvm::MipsTargetLowering::EmitInstrWithCustomInserter(), llvm::ARMTargetLowering::EmitInstrWithCustomInserter(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::X86TargetLowering::EmitInstrWithCustomInserter(), llvm::PPCTargetLowering::EmitPartwordAtomicBinary(), llvm::MSP430TargetLowering::EmitShiftInstr(), findRepresentativeClass(), llvm::X86TargetLowering::getJumpTableEncoding(), llvm::TargetLowering::getJumpTableEncoding(), llvm::MipsTargetLowering::getOpndList(), llvm::PPCTargetLowering::getRegForInlineAsmConstraint(), llvm::TargetLowering::getRegForInlineAsmConstraint(), llvm::X86TargetLowering::getReturnAddressFrameIndex(), llvm::ARMTargetLowering::getSchedulingPreference(), llvm::X86TargetLowering::getSetCCResultType(), llvm::X86TargetLowering::getStackCookieLocation(), llvm::AArch64TargetLowering::IsEligibleForTailCallOptimization(), llvm::isInTailCallPosition(), llvm::X86TargetLowering::isLegalAddressingMode(), llvm::TargetLowering::isOffsetFoldingLegal(), llvm::X86TargetLowering::LowerAsmOperandForConstraint(), llvm::AArch64TargetLowering::LowerBlockAddress(), llvm::HexagonTargetLowering::LowerCall(), llvm::AArch64TargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), llvm::SparcTargetLowering::LowerCall_64(), llvm::HexagonTargetLowering::LowerCallResult(), llvm::AArch64TargetLowering::LowerCallResult(), llvm::X86TargetLowering::LowerCustomJumpTableEntry(), llvm::R600TargetLowering::LowerFormalArguments(), llvm::SITargetLowering::LowerFormalArguments(), llvm::HexagonTargetLowering::LowerFormalArguments(), llvm::AArch64TargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_32(), llvm::SparcTargetLowering::LowerFormalArguments_64(), llvm::AMDGPUTargetLowering::LowerGlobalAddress(), llvm::HexagonTargetLowering::LowerGLOBALADDRESS(), llvm::AArch64TargetLowering::LowerGlobalAddressELF(), llvm::AArch64TargetLowering::LowerGlobalAddressELFLarge(), llvm::AArch64TargetLowering::LowerGlobalAddressELFSmall(), llvm::SparcTargetLowering::LowerGlobalTLSAddress(), llvm::AArch64TargetLowering::LowerGlobalTLSAddress(), LowerINTRINSIC_W_CHAIN(), llvm::AArch64TargetLowering::LowerJumpTable(), llvm::HexagonTargetLowering::LowerReturn(), llvm::AArch64TargetLowering::LowerReturn(), llvm::AArch64TargetLowering::LowerTLSDescCall(), llvm::SparcTargetLowering::makeAddress(), llvm::PPCTargetLowering::PerformDAGCombine(), llvm::SITargetLowering::PostISelFolding(), llvm::PPCTargetLowering::ReplaceNodeResults(), llvm::X86TargetLowering::resetOperationActions(), and llvm::ResourcePriorityQueue::ResourcePriorityQueue().

virtual bool llvm::TargetLoweringBase::getTgtMemIntrinsic ( IntrinsicInfo &  , const CallInst &  , unsigned    ) const

inlinevirtual

Given an intrinsic, checks if on the target the intrinsic will need to map to a MemIntrinsicNode (touches memory). If this is the case, it returns true and store the intrinsic information into the IntrinsicInfo that was passed to the function.

Reimplemented in llvm::ARMTargetLowering, llvm::AArch64TargetLowering, llvm::AMDGPUTargetLowering, and llvm::NVPTXTargetLowering.

Definition at line 383 of file TargetLowering.h.

LegalizeAction llvm::TargetLoweringBase::getTruncStoreAction ( MVT  ValVT, MVT  MemVT  ) const

inline

Return how this store with truncation should be treated: either it is legal, needs to be promoted to a larger size, needs to be expanded to some other code sequence, or the target has a custom expander for it.

Definition at line 479 of file TargetLowering.h.

References llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by isTruncStoreLegal().

LegalizeTypeAction llvm::TargetLoweringBase::getTypeAction ( LLVMContext &  Context, EVT  VT  ) const

inline

Return how we should legalize values of this type, either it is already legal (return 'Legal') or we need to promote it to a larger type (return 'Promote'), or we need to expand it into multiple registers of smaller integer type (return 'Expand'). 'Custom' is not an option.

Definition at line 319 of file TargetLowering.h.

References getTypeConversion().

Referenced by llvm::SelectionDAG::getConstant(), getTypeToExpandTo(), getVectorTypeBreakdown(), and OptimizeNoopCopyExpression().

LegalizeTypeAction llvm::TargetLoweringBase::getTypeAction ( MVT  VT ) const

inline

Definition at line 322 of file TargetLowering.h.

References llvm::TargetLoweringBase::ValueTypeActionImpl::getTypeAction().

LegalizeKind llvm::TargetLoweringBase::getTypeConversion ( LLVMContext &  Context, EVT  VT  ) const

inline

Definition at line 1473 of file TargetLowering.h.

References llvm::array_lengthof(), llvm::EVT::getIntegerVT(), llvm::EVT::getPow2VectorType(), llvm::EVT::getRoundIntegerType(), llvm::EVT::getSimpleVT(), llvm::EVT::getSizeInBits(), llvm::TargetLoweringBase::ValueTypeActionImpl::getTypeAction(), llvm::MVT::getVectorElementType(), llvm::EVT::getVectorElementType(), llvm::MVT::getVectorNumElements(), llvm::EVT::getVectorNumElements(), llvm::MVT::getVectorVT(), llvm::EVT::getVectorVT(), llvm::EVT::isInteger(), llvm::EVT::isPow2VectorType(), llvm::isPowerOf2_32(), llvm::EVT::isSimple(), llvm::EVT::isVector(), llvm::NextPowerOf2(), llvm::MVT::SimpleTy, TypeExpandInteger, TypeLegal, TypePromoteInteger, TypeScalarizeVector, TypeSplitVector, and TypeWidenVector.

Referenced by getTypeAction(), getTypeLegalizationCost(), and getTypeToTransformTo().

std::pair< unsigned, MVT > TargetLoweringBase::getTypeLegalizationCost

(

Type *

Ty

)

const

Estimate the cost of type-legalization and the legalized type.

Definition at line 1312 of file TargetLoweringBase.cpp.

References llvm::CallingConv::C, llvm::Type::getContext(), llvm::EVT::getSimpleVT(), getTypeConversion(), getValueType(), TypeExpandInteger, TypeLegal, and TypeSplitVector.

EVT llvm::TargetLoweringBase::getTypeToExpandTo ( LLVMContext &  Context, EVT  VT  ) const

inline

For types supported by the target, this is an identity function. For types that must be expanded (i.e. integer types that are larger than the largest integer register or illegal floating point types), this returns the largest legal type it will be expanded to.

Definition at line 340 of file TargetLowering.h.

References getTypeAction(), getTypeToTransformTo(), llvm::EVT::isVector(), llvm_unreachable, TypeExpandInteger, and TypeLegal.

MVT llvm::TargetLoweringBase::getTypeToPromoteTo ( unsigned  Op, MVT  VT  ) const

inline

If the action for this operation is to promote, this method returns the ValueType to promote to.

Definition at line 555 of file TargetLowering.h.

References getOperationAction(), llvm::MVT::isFloatingPoint(), llvm::MVT::isInteger(), isTypeLegal(), llvm::MVT::isVoid, Promote, and llvm::MVT::SimpleTy.

EVT llvm::TargetLoweringBase::getTypeToTransformTo ( LLVMContext &  Context, EVT  VT  ) const

inline

For types supported by the target, this is an identity function. For types that must be promoted to larger types, this returns the larger type to promote to. For integer types that are larger than the largest integer register, this contains one step in the expansion to get to the smaller register. For illegal floating point types, this returns the integer type to transform to.

Definition at line 332 of file TargetLowering.h.

References getTypeConversion().

Referenced by llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo(), llvm::SelectionDAG::getConstant(), getMemcpyLoadsAndStores(), llvm::FastISel::getRegForValue(), getRegisterType(), llvm::SelectionDAG::GetSplitDestVTs(), getTypeToExpandTo(), getVectorTypeBreakdown(), and OptimizeNoopCopyExpression().

EVT llvm::TargetLoweringBase::getValueType ( Type *  Ty, bool  AllowUnknown = false  ) const

inline

Return the EVT corresponding to this LLVM type. This is fixed by the LLVM operations except for the pointer size. If AllowUnknown is true, this will return MVT::Other for types with no EVT counterpart (e.g. structs), otherwise it will assert.

Definition at line 582 of file TargetLowering.h.

References llvm::Type::getContext(), llvm::SequentialType::getElementType(), llvm::EVT::getEVT(), llvm::VectorType::getNumElements(), getPointerTy(), llvm::EVT::getTypeForEVT(), llvm::EVT::getVectorVT(), and llvm::Type::isVectorTy().

Referenced by CompactSwizzlableVector(), llvm::ComputeValueVTs(), llvm::NVPTXTargetLowering::getPrototype(), llvm::FastISel::getRegForValue(), getSimpleValueType(), llvm::NVPTXTargetLowering::getTgtMemIntrinsic(), getTypeLegalizationCost(), llvm::SelectionDAGBuilder::getValueImpl(), llvm::ARMTargetLowering::isLegalAddressingMode(), llvm::NVPTXTargetLowering::LowerCall(), llvm::TargetLowering::LowerCallTo(), llvm::NVPTXTargetLowering::LowerFormalArguments(), llvm::NVPTXTargetLowering::LowerReturn(), OptimizeNoopCopyExpression(), llvm::X86TargetLowering::ReplaceNodeResults(), and llvm::FastISel::SelectOperator().

const ValueTypeActionImpl& llvm::TargetLoweringBase::getValueTypeActions ( ) const

inline

Definition at line 311 of file TargetLowering.h.

virtual MVT llvm::TargetLoweringBase::getVectorIdxTy ( ) const

inlinevirtual

Returns the type to be used for the index operand of: ISD::INSERT_VECTOR_ELT, ISD::EXTRACT_VECTOR_ELT, ISD::INSERT_SUBVECTOR, and ISD::EXTRACT_SUBVECTOR

Reimplemented in llvm::AMDGPUTargetLowering.

Definition at line 165 of file TargetLowering.h.

References getPointerTy().

Referenced by BuildVectorFromScalar(), getCopyFromPartsVector(), llvm::SelectionDAG::SplitVector(), and llvm::SelectionDAG::UnrollVectorOp().

unsigned TargetLoweringBase::getVectorTypeBreakdown	(	LLVMContext &	Context,
		EVT	VT,
		EVT &	IntermediateVT,
		unsigned &	NumIntermediates,
		MVT &	RegisterVT
	)		const

Vector types are broken down into some number of legal first class types. For example, EVT::v8f32 maps to 2 EVT::v4f32 with Altivec or SSE1, or 8 promoted EVT::f64 values with the X86 FP stack. Similarly, EVT::v2i64 turns into 4 EVT::i32 values with both PPC and X86.

This method returns the number of registers needed, and the VT for each register. It also returns the VT and quantity of the intermediate values before they are promoted/expanded.

getVectorTypeBreakdown - Vector types are broken down into some number of legal first class types. For example, MVT::v8f32 maps to 2 MVT::v4f32 with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack. Similarly, MVT::v2i64 turns into 4 MVT::i32 values with both PPC and X86.

This method returns the number of registers needed, and the VT for each register. It also returns the VT and quantity of the intermediate values before they are promoted/expanded.

Definition at line 1114 of file TargetLoweringBase.cpp.

References getRegisterType(), llvm::EVT::getSimpleVT(), llvm::MVT::getSizeInBits(), llvm::EVT::getSizeInBits(), getTypeAction(), getTypeToTransformTo(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorNumElements(), llvm::EVT::getVectorVT(), llvm::isPowerOf2_32(), isTypeLegal(), llvm::NextPowerOf2(), llvm::X86II::TA, TypePromoteInteger, and TypeWidenVector.

Referenced by getCopyFromPartsVector(), getNumRegisters(), and getRegisterType().

virtual bool llvm::TargetLoweringBase::hasPairedLoad ( Type *  , unsigned &    ) const

inlinevirtual

Return true if the target supplies and combines to a paired load two loaded values of type LoadedType next to each other in memory. RequiredAlignment gives the minimal alignment constraints that must be met to be able to select this paired load.

This information is not used to generate actual paired loads, but it is used to generate a sequence of loads that is easier to combine into a paired load. For instance, something like this: a = load i64* addr b = trunc i64 a to i32 c = lshr i64 a, 32 d = trunc i64 c to i32 will be optimized into: b = load i32* addr1 d = load i32* addr2 Where addr1 = addr2 +/- sizeof(i32).

In other words, unless the target performs a post-isel load combining, this information should not be provided because it will generate more loads.

Definition at line 1226 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::hasPairedLoad ( EVT  , unsigned &    ) const

inlinevirtual

Definition at line 1231 of file TargetLowering.h.

bool llvm::TargetLoweringBase::hasTargetDAGCombine ( ISD::NodeType  NT ) const

inline

If true, the target has custom DAG combine transformations that it can perform for the specified node.

Definition at line 673 of file TargetLowering.h.

References llvm::array_lengthof().

void TargetLoweringBase::initActions ( )

protected

Initialize all of the actions to default values.

Definition at line 702 of file TargetLoweringBase.cpp.

References llvm::array_lengthof(), llvm::ISD::CONCAT_VECTORS, llvm::ISD::ConstantFP, llvm::ISD::DEBUGTRAP, Expand, llvm::MVT::f128, llvm::MVT::f16, llvm::MVT::f32, llvm::MVT::f64, llvm::MVT::f80, llvm::ISD::FCEIL, llvm::ISD::FCOPYSIGN, llvm::ISD::FEXP, llvm::ISD::FEXP2, llvm::ISD::FFLOOR, llvm::ISD::FGETSIGN, llvm::MVT::FIRST_VECTOR_VALUETYPE, llvm::ISD::FLOG, llvm::ISD::FLOG10, llvm::ISD::FLOG2, llvm::ISD::FNEARBYINT, llvm::ISD::FRINT, llvm::ISD::FROUND, llvm::ISD::FTRUNC, llvm::ISD::LAST_INDEXED_MODE, llvm::MVT::LAST_VALUETYPE, llvm::MVT::LAST_VECTOR_VALUETYPE, llvm::Intrinsic::memset, llvm::MVT::Other, llvm::ISD::PRE_INC, llvm::ISD::PREFETCH, setIndexedLoadAction(), setIndexedStoreAction(), setOperationAction(), and llvm::ISD::TRAP.

Referenced by llvm::X86TargetLowering::resetOperationActions(), and TargetLoweringBase().

int TargetLoweringBase::InstructionOpcodeToISD

(

unsigned

Opcode

)

const

Get the ISD node that corresponds to the Instruction class opcode.

Definition at line 1240 of file TargetLoweringBase.cpp.

References llvm::ISD::ADD, llvm::ISD::ADDRSPACECAST, llvm::ISD::AND, llvm::APIntOps::And(), llvm::ISD::BITCAST, llvm::Call, llvm::ISD::EXTRACT_VECTOR_ELT, ExtractElement(), llvm::ISD::FADD, llvm::ISD::FDIV, llvm::ISD::FMUL, llvm::ISD::FP_EXTEND, llvm::ISD::FP_ROUND, llvm::ISD::FP_TO_SINT, llvm::ISD::FP_TO_UINT, llvm::ISD::FREM, llvm::ISD::FSUB, llvm::ISD::INSERT_VECTOR_ELT, llvm_unreachable, llvm::SPII::Load, llvm::ISD::LOAD, llvm::ISD::MERGE_VALUES, llvm::ISD::MUL, llvm::ISD::OR, llvm::APIntOps::Or(), llvm::TargetOpcode::PHI, llvm::AArch64ISD::Ret, llvm::MCID::Select, llvm::ISD::SELECT, llvm::ISD::SETCC, llvm::ISD::SHL, llvm::ISD::SIGN_EXTEND, llvm::ISD::SINT_TO_FP, llvm::ISD::SRA, llvm::ISD::SREM, llvm::ISD::SRL, llvm::SPII::Store, llvm::ISD::STORE, llvm::ISD::SUB, llvm::ISD::TRUNCATE, llvm::ISD::UDIV, llvm::ISD::UINT_TO_FP, llvm::ISD::UREM, llvm::ISD::VECTOR_SHUFFLE, llvm::ISD::XOR, llvm::APIntOps::Xor(), and llvm::ISD::ZERO_EXTEND.

bool llvm::TargetLoweringBase::isBigEndian ( ) const

inline

Definition at line 149 of file TargetLowering.h.

Referenced by llvm::SelectionDAG::getConstant(), getCopyFromParts(), getCopyToParts(), isExtendedBUILD_VECTOR(), and SkipExtensionForVMULL().

bool llvm::TargetLoweringBase::isCondCodeLegal ( ISD::CondCode  CC, MVT  VT  ) const

inline

Return true if the specified condition code is legal on this target.

Definition at line 546 of file TargetLowering.h.

References Custom, getCondCodeAction(), and Legal.

Referenced by llvm::SelectionDAG::FoldSetCC(), llvm::R600TargetLowering::PerformDAGCombine(), and llvm::TargetLowering::SimplifySetCC().

virtual bool llvm::TargetLoweringBase::isFAbsFree ( EVT  VT ) const

inlinevirtual

Return true if an fabs operation is free to the point where it is never worthwhile to replace it with a bitwise operation.

Reimplemented in llvm::AMDGPUTargetLowering.

Definition at line 1252 of file TargetLowering.h.

References llvm::EVT::isFloatingPoint().

virtual bool llvm::TargetLoweringBase::isFMAFasterThanFMulAndFAdd ( EVT  ) const

inlinevirtual

Return true if an FMA operation is faster than a pair of fmul and fadd instructions. fmuladd intrinsics will be expanded to FMAs when this method returns true, otherwise fmuladd is expanded to fmul + fadd.

NOTE: This may be called before legalization on types for which FMAs are not legal, but should return true if those types will eventually legalize to types that support FMAs. After legalization, it will only be called on types that support FMAs (via Legal or Custom actions)

Reimplemented in llvm::X86TargetLowering, llvm::PPCTargetLowering, llvm::AArch64TargetLowering, llvm::SystemZTargetLowering, and llvm::SITargetLowering.

Definition at line 1265 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isFNegFree ( EVT  VT ) const

inlinevirtual

Return true if an fneg operation is free to the point where it is never worthwhile to replace it with a bitwise operation.

Reimplemented in llvm::AMDGPUTargetLowering.

Definition at line 1245 of file TargetLowering.h.

References llvm::EVT::isFloatingPoint().

virtual bool llvm::TargetLoweringBase::isFPImmLegal ( const APFloat &  , EVT    ) const

inlinevirtual

Returns true if the target can instruction select the specified FP immediate natively. If false, the legalizer will materialize the FP immediate as a load from a constant pool.

Reimplemented in llvm::X86TargetLowering, llvm::ARMTargetLowering, llvm::SystemZTargetLowering, llvm::HexagonTargetLowering, and llvm::AMDGPUTargetLowering.

Definition at line 391 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isIndexedLoadLegal ( unsigned  IdxMode, EVT  VT  ) const

inline

Return true if the specified indexed load is legal on this target.

Definition at line 505 of file TargetLowering.h.

References Custom, getIndexedLoadAction(), llvm::EVT::getSimpleVT(), llvm::EVT::isSimple(), and Legal.

bool llvm::TargetLoweringBase::isIndexedStoreLegal ( unsigned  IdxMode, EVT  VT  ) const

inline

Return true if the specified indexed load is legal on this target.

Definition at line 523 of file TargetLowering.h.

References Custom, getIndexedStoreAction(), llvm::EVT::getSimpleVT(), llvm::EVT::isSimple(), and Legal.

bool llvm::TargetLoweringBase::isIntDivCheap ( ) const

inline

Return true if integer divide is usually cheaper than a sequence of several shifts, adds, and multiplies for this target.

Definition at line 183 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isJumpExpensive ( ) const

inline

Return true if Flow Control is an expensive operation that should be avoided.

Definition at line 199 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isLegalAddImmediate ( int64_t  ) const

inlinevirtual

Return true if the specified immediate is legal add immediate, that is the target has add instructions which can add a register with the immediate without having to materialize the immediate into a register.

Reimplemented in llvm::X86TargetLowering, and llvm::ARMTargetLowering.

Definition at line 1165 of file TargetLowering.h.

bool TargetLoweringBase::isLegalAddressingMode ( const AddrMode &  AM, Type *  Ty  ) const

virtual

Return true if the addressing mode represented by AM is legal for this target, for a load/store of the specified type.

The type may be VoidTy, in which case only return true if the addressing mode is legal for a load/store of any legal type. TODO: Handle pre/postinc as well.

isLegalAddressingMode - Return true if the addressing mode represented by AM is legal for this target, for a load/store of the specified type.

Reimplemented in llvm::X86TargetLowering, llvm::PPCTargetLowering, llvm::ARMTargetLowering, llvm::SystemZTargetLowering, llvm::HexagonTargetLowering, llvm::XCoreTargetLowering, and llvm::NVPTXTargetLowering.

Definition at line 1340 of file TargetLoweringBase.cpp.

References llvm::TargetLoweringBase::AddrMode::BaseGV, llvm::TargetLoweringBase::AddrMode::BaseOffs, llvm::TargetLoweringBase::AddrMode::HasBaseReg, and llvm::TargetLoweringBase::AddrMode::Scale.

Referenced by canFoldInAddressingMode(), and getScalingFactorCost().

virtual bool llvm::TargetLoweringBase::isLegalICmpImmediate ( int64_t  ) const

inlinevirtual

Return true if the specified immediate is legal icmp immediate, that is the target has icmp instructions which can compare a register against the immediate without having to materialize the immediate into a register.

Reimplemented in llvm::X86TargetLowering, llvm::ARMTargetLowering, llvm::AArch64TargetLowering, and llvm::HexagonTargetLowering.

Definition at line 1158 of file TargetLowering.h.

Referenced by llvm::TargetLowering::SimplifySetCC().

bool TargetLoweringBase::isLegalRC ( const TargetRegisterClass *  RC ) const

protected

Return true if the value types that can be represented by the specified register class are all legal.

isLegalRC - Return true if the value types that can be represented by the specified register class are all legal.

Definition at line 888 of file TargetLoweringBase.cpp.

References I, isTypeLegal(), llvm::TargetRegisterClass::vt_begin(), and llvm::TargetRegisterClass::vt_end().

Referenced by findRepresentativeClass(), and llvm::TargetLowering::getRegForInlineAsmConstraint().

bool llvm::TargetLoweringBase::isLittleEndian ( ) const

inline

Definition at line 150 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::allowsUnalignedMemoryAccesses(), ExpandUnalignedLoad(), ExpandUnalignedStore(), getMemsetStringVal(), ShrinkLoadReplaceStoreWithStore(), and llvm::TargetLowering::SimplifySetCC().

virtual bool llvm::TargetLoweringBase::isLoadBitCastBeneficial ( EVT  , EVT    ) const

inlinevirtual

isLoadBitCastBeneficial() - Return true if the following transform is beneficial. fold (conv (load x)) -> (load (conv*)x) On architectures that don't natively support some vector loads efficiently, casting the load to a smaller vector of larger types and loading is more efficient, however, this can be undone by optimizations in dag combiner.

Reimplemented in llvm::AMDGPUTargetLowering.

Definition at line 214 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isLoadExtLegal ( unsigned  ExtType, EVT  VT  ) const

inline

Return true if the specified load with extension is legal on this target.

Definition at line 471 of file TargetLowering.h.

References getLoadExtAction(), llvm::EVT::getSimpleVT(), llvm::EVT::isSimple(), and Legal.

virtual bool llvm::TargetLoweringBase::isNarrowingProfitable ( EVT  , EVT    ) const

inlinevirtual

Return true if it's profitable to narrow operations of type VT1 to VT2. e.g. on x86, it's profitable to narrow from i32 to i8 but not from i32 to i16.

Reimplemented in llvm::X86TargetLowering.

Definition at line 1272 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isNoopAddrSpaceCast ( unsigned  SrcAS, unsigned  DestAS  ) const

inlinevirtual

Returns true if a cast between SrcAS and DestAS is a noop.

Reimplemented in llvm::X86TargetLowering.

Definition at line 842 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isOperationExpand ( unsigned  Op, EVT  VT  ) const

inline

Return true if the specified operation is illegal on this target or unlikely to be made legal with custom lowering. This is used to help guide high-level lowering decisions.

Definition at line 451 of file TargetLowering.h.

References Expand, getOperationAction(), and isTypeLegal().

bool llvm::TargetLoweringBase::isOperationLegal ( unsigned  Op, EVT  VT  ) const

inline

Return true if the specified operation is legal on this target.

Definition at line 456 of file TargetLowering.h.

References getOperationAction(), isTypeLegal(), Legal, and llvm::MVT::Other.

Referenced by llvm::TargetLowering::BuildSDIV(), llvm::TargetLowering::BuildUDIV(), llvm::R600TargetLowering::PerformDAGCombine(), PerformSELECTCombine(), llvm::TargetLowering::SimplifySetCC(), and tryFoldToZero().

bool llvm::TargetLoweringBase::isOperationLegalOrCustom ( unsigned  Op, EVT  VT  ) const

inline

Return true if the specified operation is legal on this target or can be made legal with custom lowering. This is used to help guide high-level lowering decisions.

Definition at line 433 of file TargetLowering.h.

References Custom, getOperationAction(), isTypeLegal(), Legal, and llvm::MVT::Other.

Referenced by areJTsAllowed(), buildFromShuffleMostly(), llvm::TargetLowering::BuildSDIV(), llvm::TargetLowering::BuildUDIV(), FindOptimalMemOpLowering(), isNegatibleForFree(), PerformLOADCombine(), llvm::TargetLowering::SimplifyDemandedBits(), and XFormVExtractWithShuffleIntoLoad().

bool llvm::TargetLoweringBase::isOperationLegalOrPromote ( unsigned  Op, EVT  VT  ) const

inline

Return true if the specified operation is legal on this target or can be made legal using promotion. This is used to help guide high-level lowering decisions.

Definition at line 442 of file TargetLowering.h.

References getOperationAction(), isTypeLegal(), Legal, llvm::MVT::Other, and Promote.

Referenced by WidenMaskArithmetic().

bool llvm::TargetLoweringBase::isPow2DivCheap ( ) const

inline

Return true if pow2 div is cheaper than a chain of srl/add/sra.

Definition at line 195 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isPredictableSelectExpensive ( ) const

inline

Return true if selects are only cheaper than branches if the branch is unlikely to be predicted right.

Definition at line 203 of file TargetLowering.h.

References PredictableSelectIsExpensive.

virtual bool llvm::TargetLoweringBase::isSafeMemOpType ( MVT  ) const

inlinevirtual

Returns true if it's safe to use load / store of the specified type to expand memcpy / memset inline.

This is mostly true for all types except for some special cases. For example, on X86 targets without SSE2 f64 load / store are done with fldl / fstpl which also does type conversion. Note the specified type doesn't have to be legal as the hook is used before type legalization.

Reimplemented in llvm::X86TargetLowering.

Definition at line 748 of file TargetLowering.h.

Referenced by FindOptimalMemOpLowering().

bool llvm::TargetLoweringBase::isSelectExpensive ( ) const

inline

Return true if the select operation is expensive for this target.

Definition at line 170 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isSelectSupported ( SelectSupportKind  ) const

inlinevirtual

Reimplemented in llvm::ARMTargetLowering.

Definition at line 172 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isShuffleMaskLegal ( const SmallVectorImpl< int > &  , EVT    ) const

inlinevirtual

Targets can use this to indicate that they only support some VECTOR_SHUFFLE operations, those with specific masks. By default, if a target supports the VECTOR_SHUFFLE node, all mask values are assumed to be legal.

Reimplemented in llvm::X86TargetLowering, llvm::ARMTargetLowering, and llvm::MipsSETargetLowering.

Definition at line 399 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isSlowDivBypassed ( ) const

inline

Returns true if target has indicated at least one type should be bypassed.

Definition at line 186 of file TargetLowering.h.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::empty().

virtual bool llvm::TargetLoweringBase::isTruncateFree ( Type *  , Type *    ) const

inlinevirtual

Return true if it's free to truncate a value of type Ty1 to type Ty2. e.g. On x86 it's free to truncate a i32 value in register EAX to i16 by referencing its sub-register AX.

Reimplemented in llvm::X86TargetLowering, llvm::SystemZTargetLowering, llvm::MSP430TargetLowering, and llvm::HexagonTargetLowering.

Definition at line 1172 of file TargetLowering.h.

Referenced by ExtendUsesToFormExtLoad(), getMemsetStores(), and llvm::TargetLowering::TargetLoweringOpt::ShrinkDemandedOp().

virtual bool llvm::TargetLoweringBase::isTruncateFree ( EVT  , EVT    ) const

inlinevirtual

Reimplemented in llvm::X86TargetLowering, llvm::SystemZTargetLowering, llvm::MSP430TargetLowering, and llvm::HexagonTargetLowering.

Definition at line 1185 of file TargetLowering.h.

bool llvm::TargetLoweringBase::isTruncStoreLegal ( EVT  ValVT, EVT  MemVT  ) const

inline

Return true if the specified store with truncation is legal on this target.

Definition at line 488 of file TargetLowering.h.

References llvm::EVT::getSimpleVT(), getTruncStoreAction(), llvm::EVT::isSimple(), isTypeLegal(), and Legal.

bool llvm::TargetLoweringBase::isTypeLegal ( EVT  VT ) const

inline

Return true if the target has native support for the specified value type. This means that it has a register that directly holds it without promotions or expansions.

Definition at line 285 of file TargetLowering.h.

References llvm::array_lengthof(), llvm::EVT::getSimpleVT(), llvm::EVT::isSimple(), and llvm::MVT::SimpleTy.

Referenced by llvm::ARMTargetLowering::allowTruncateForTailCall(), llvm::X86TargetLowering::allowTruncateForTailCall(), llvm::TargetLowering::BuildSDIV(), llvm::TargetLowering::BuildUDIV(), canOpTrap(), computeRegisterProperties(), EltsFromConsecutiveLoads(), ExpandBITCAST(), ExpandUnalignedLoad(), ExpandUnalignedStore(), FindMemType(), FindOptimalMemOpLowering(), getCopyFromPartsVector(), getCopyToParts(), llvm::FastISel::getRegForValue(), getTypeToPromoteTo(), getVectorTypeBreakdown(), getVectorTypeBreakdownMVT(), isLegalRC(), isNoopBitcast(), isOperationExpand(), isOperationLegal(), isOperationLegalOrCustom(), isOperationLegalOrPromote(), isTruncStoreLegal(), llvm::X86TargetLowering::isTypeDesirableForOp(), llvm::TargetLowering::isTypeDesirableForOp(), llvm::NVPTXTargetLowering::isTypeSupportedInIntrinsic(), LowerADDC_ADDE_SUBC_SUBE(), LowerATOMIC_STORE(), LowerFP_TO_SINT(), LowerFP_TO_UINT(), LowerSINT_TO_FP(), LowerUINT_TO_FP(), LowerVectorIntExtend(), PerformANDCombine(), PerformExtendCombine(), PerformFMACombine(), PerformLOADCombine(), PerformORCombine(), PerformSELECTCombine(), PerformShiftCombine(), PerformShuffleCombine(), PerformSTORECombine(), PerformVECTOR_SHUFFLECombine(), PerformXORCombine(), llvm::ResourcePriorityQueue::rawRegPressureDelta(), llvm::X86TargetLowering::ReplaceNodeResults(), llvm::ResourcePriorityQueue::scheduledNode(), llvm::TargetLowering::SimplifySetCC(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::SelectionDAGBuilder::visitBitTestHeader().

virtual bool llvm::TargetLoweringBase::isVectorClearMaskLegal ( const SmallVectorImpl< int > &  , EVT    ) const

inlinevirtual

Similar to isShuffleMaskLegal. This is used by Targets can use this to indicate if there is a suitable VECTOR_SHUFFLE that can be used to replace a VAND with a constant pool entry.

Reimplemented in llvm::X86TargetLowering.

Definition at line 413 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isZExtFree ( Type *  , Type *    ) const

inlinevirtual

Return true if any actual instruction that defines a value of type Ty1 implicitly zero-extends the value to Ty2 in the result register.

This does not necessarily include registers defined in unknown ways, such as incoming arguments, or copies from unknown virtual registers. Also, if isTruncateFree(Ty2, Ty1) is true, this does not necessarily apply to truncate instructions. e.g. on x86-64, all instructions that define 32-bit values implicit zero-extend the result out to 64 bits.

Reimplemented in llvm::X86TargetLowering, and llvm::MSP430TargetLowering.

Definition at line 1197 of file TargetLowering.h.

Referenced by isZExtFree(), and llvm::TargetLowering::TargetLoweringOpt::ShrinkDemandedOp().

virtual bool llvm::TargetLoweringBase::isZExtFree ( EVT  , EVT    ) const

inlinevirtual

Reimplemented in llvm::X86TargetLowering, and llvm::MSP430TargetLowering.

Definition at line 1201 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::isZExtFree ( SDValue  Val, EVT  VT2  ) const

inlinevirtual

Return true if zero-extending the specific node Val to type VT2 is free (either because it's implicitly zero-extended such as ARM ldrb / ldrh or because it's folded such as X86 zero-extending loads).

Reimplemented in llvm::X86TargetLowering, llvm::ARMTargetLowering, llvm::MSP430TargetLowering, and llvm::XCoreTargetLowering.

Definition at line 1239 of file TargetLowering.h.

References llvm::SDValue::getValueType(), and isZExtFree().

virtual void llvm::TargetLoweringBase::resetOperationActions ( )

inlinevirtual

Reset the operation actions based on target options.

Reimplemented in llvm::X86TargetLowering.

Definition at line 864 of file TargetLowering.h.

void llvm::TargetLoweringBase::setBooleanContents ( BooleanContent  Ty )

inlineprotected

Specify how the target extends the result of a boolean value from i1 to a wider type. See getBooleanContents.

Definition at line 869 of file TargetLowering.h.

Referenced by llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setBooleanVectorContents ( BooleanContent  Ty )

inlineprotected

Specify how the target extends the result of a vector boolean value from a vector of i1 to a wider type. See getBooleanContents.

Definition at line 873 of file TargetLowering.h.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setCmpLibcallCC ( RTLIB::Libcall  Call, ISD::CondCode  CC  )

inline

Override the default CondCode to be used to test the result of the comparison libcall against zero.

Definition at line 1292 of file TargetLowering.h.

References llvm::Call.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering().

void llvm::TargetLoweringBase::setCondCodeAction ( ISD::CondCode  CC, MVT  VT, LegalizeAction  Action  )

inlineprotected

Indicate that the specified condition code is or isn't supported on the target and indicate what to do about it.

The lower 5 bits of the SimpleTy index into Nth 2bit set from the 32-bit value and the upper 27 bits index into the second dimension of the array to select what 32-bit value to use.

Definition at line 1034 of file TargetLowering.h.

References llvm::array_lengthof(), llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by llvm::MipsSETargetLowering::addMSAFloatType(), llvm::MipsSETargetLowering::addMSAIntType(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), and llvm::SITargetLowering::SITargetLowering().

void llvm::TargetLoweringBase::setExceptionPointerRegister ( unsigned  R )

inlineprotected

If set to a physical register, this sets the register that receives the exception address on entry to a landing pad.

Definition at line 913 of file TargetLowering.h.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setExceptionSelectorRegister ( unsigned  R )

inlineprotected

If set to a physical register, this sets the register that receives the exception typeid on entry to a landing pad.

Definition at line 919 of file TargetLowering.h.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setIndexedLoadAction ( unsigned  IdxMode, MVT  VT, LegalizeAction  Action  )

inlineprotected

Indicate that the specified indexed load does or does not work with the specified type and indicate what to do abort it.

NOTE: All indexed mode loads are initialized to Expand in TargetLowering.cpp

Definition at line 1009 of file TargetLowering.h.

References llvm::ISD::LAST_INDEXED_MODE, llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), initActions(), llvm::MSP430TargetLowering::MSP430TargetLowering(), and llvm::PPCTargetLowering::PPCTargetLowering().

void llvm::TargetLoweringBase::setIndexedStoreAction ( unsigned  IdxMode, MVT  VT, LegalizeAction  Action  )

inlineprotected

Indicate that the specified indexed store does or does not work with the specified type and indicate what to do about it.

NOTE: All indexed mode stores are initialized to Expand in TargetLowering.cpp

Definition at line 1023 of file TargetLowering.h.

References llvm::ISD::LAST_INDEXED_MODE, llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), initActions(), and llvm::PPCTargetLowering::PPCTargetLowering().

void llvm::TargetLoweringBase::setInsertFencesForAtomic ( bool  fence )

inlineprotected

Set if the DAG builder should automatically insert fences and reduce the order of atomic memory operations to Monotonic.

Definition at line 1100 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), and llvm::PPCTargetLowering::PPCTargetLowering().

void llvm::TargetLoweringBase::setIntDivIsCheap ( bool  isCheap = true )

inlineprotected

Tells the code generator that integer divide is expensive, and if possible, should be replaced by an alternate sequence of instructions not containing an integer divide.

Definition at line 938 of file TargetLowering.h.

Referenced by llvm::MSP430TargetLowering::MSP430TargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setJumpBufAlignment ( unsigned  Align )

inlineprotected

Set the target's required jmp_buf buffer alignment (in bytes); default is 0

Definition at line 1070 of file TargetLowering.h.

References Align().

void llvm::TargetLoweringBase::setJumpBufSize ( unsigned  Size )

inlineprotected

Set the target's required jmp_buf buffer size (in bytes); default is 200.

Definition at line 1064 of file TargetLowering.h.

void llvm::TargetLoweringBase::setJumpIsExpensive ( bool  isExpensive = true )

inlineprotected

Tells the code generator not to expand sequence of operations into a separate sequences that increases the amount of flow control.

Definition at line 931 of file TargetLowering.h.

Referenced by llvm::NVPTXTargetLowering::NVPTXTargetLowering().

void llvm::TargetLoweringBase::setLibcallCallingConv ( RTLIB::Libcall  Call, CallingConv::ID  CC  )

inline

Set the CallingConv that should be used for the specified libcall.

Definition at line 1303 of file TargetLowering.h.

References llvm::Call.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), and llvm::X86TargetLowering::resetOperationActions().

void llvm::TargetLoweringBase::setLibcallName ( RTLIB::Libcall  Call, const char *  Name  )

inline

Rename the default libcall routine name for the specified libcall.

Definition at line 1281 of file TargetLowering.h.

References llvm::Call.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), and llvm::SparcTargetLowering::SparcTargetLowering().

void llvm::TargetLoweringBase::setLoadExtAction ( unsigned  ExtType, MVT  VT, LegalizeAction  Action  )

inlineprotected

Indicate that the specified load with extension does not work with the specified type and indicate what to do about it.

Definition at line 988 of file TargetLowering.h.

References llvm::ISD::LAST_LOADEXT_TYPE, llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::AMDGPUTargetLowering::AMDGPUTargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsSETargetLowering::MipsSETargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setMinFunctionAlignment ( unsigned  Align )

inlineprotected

Set the target's minimum function alignment (in log2(bytes))

Definition at line 1075 of file TargetLowering.h.

References Align().

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setMinimumJumpTableEntries ( int  Val )

inlineprotected

Indicate the number of blocks to generate jump tables rather than if sequence.

Definition at line 901 of file TargetLowering.h.

Referenced by llvm::HexagonTargetLowering::HexagonTargetLowering().

void llvm::TargetLoweringBase::setMinStackArgumentAlignment ( unsigned  Align )

inlineprotected

Set the minimum stack alignment of an argument (in log2(bytes)).

Definition at line 1094 of file TargetLowering.h.

References Align().

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), and llvm::PPCTargetLowering::PPCTargetLowering().

void llvm::TargetLoweringBase::setOperationAction ( unsigned  Op, MVT  VT, LegalizeAction  Action  )

inlineprotected

Indicate that the specified operation does not work with the specified type and indicate what to do about it.

Definition at line 980 of file TargetLowering.h.

References llvm::array_lengthof(), and llvm::MVT::SimpleTy.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::MipsSETargetLowering::addMSAFloatType(), llvm::MipsSETargetLowering::addMSAIntType(), llvm::AMDGPUTargetLowering::AMDGPUTargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), initActions(), llvm::Mips16TargetLowering::Mips16TargetLowering(), llvm::MipsSETargetLowering::MipsSETargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setPow2DivIsCheap ( bool  isCheap = true )

inlineprotected

Tells the code generator that it shouldn't generate srl/add/sra for a signed divide by power of two, and let the target handle it.

Definition at line 947 of file TargetLowering.h.

Referenced by llvm::PPCTargetLowering::PPCTargetLowering().

void llvm::TargetLoweringBase::setPrefFunctionAlignment ( unsigned  Align )

inlineprotected

Set the target's preferred function alignment. This should be set if there is a performance benefit to higher-than-minimum alignment (in log2(bytes))

Definition at line 1082 of file TargetLowering.h.

References Align().

Referenced by llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), and llvm::X86TargetLowering::resetOperationActions().

void llvm::TargetLoweringBase::setPrefLoopAlignment ( unsigned  Align )

inlineprotected

Set the target's preferred loop alignment. Default alignment is zero, it means the target does not care about loop alignment. The alignment is specified in log2(bytes).

Definition at line 1089 of file TargetLowering.h.

References Align().

Referenced by llvm::HexagonTargetLowering::HexagonTargetLowering(), and llvm::X86TargetLowering::resetOperationActions().

void llvm::TargetLoweringBase::setSchedulingPreference ( Sched::Preference  Pref )

inlineprotected

Specify the target scheduling preference.

Definition at line 878 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setSelectIsExpensive ( bool  isExpensive = true )

inlineprotected

Tells the code generator not to expand operations into sequences that use the select operations if possible.

Definition at line 925 of file TargetLowering.h.

void llvm::TargetLoweringBase::setStackPointerRegisterToSaveRestore ( unsigned  R )

inlineprotected

If set to a physical register, this specifies the register that llvm.savestack/llvm.restorestack should save and restore.

Definition at line 907 of file TargetLowering.h.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SparcTargetLowering::SparcTargetLowering(), llvm::SystemZTargetLowering::SystemZTargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setSupportJumpTables ( bool  Val )

inlineprotected

Indicate whether the target can generate code for jump tables.

Definition at line 895 of file TargetLowering.h.

Referenced by llvm::PPCTargetLowering::PPCTargetLowering().

void llvm::TargetLoweringBase::setTargetDAGCombine ( ISD::NodeType  NT )

inlineprotected

Targets should invoke this method for each target independent node that they want to provide a custom DAG combiner for by implementing the PerformDAGCombine virtual method.

Definition at line 1058 of file TargetLowering.h.

References llvm::array_lengthof().

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::MipsSETargetLowering::MipsSETargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

void llvm::TargetLoweringBase::setTruncStoreAction ( MVT  ValVT, MVT  MemVT, LegalizeAction  Action  )

inlineprotected

Indicate that the specified truncating store does not work with the specified type and indicate what to do about it.

Definition at line 997 of file TargetLowering.h.

References llvm::MVT::LAST_VALUETYPE, and llvm::MVT::SimpleTy.

Referenced by llvm::AArch64TargetLowering::AArch64TargetLowering(), llvm::AMDGPUTargetLowering::AMDGPUTargetLowering(), llvm::ARMTargetLowering::ARMTargetLowering(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsSETargetLowering::MipsSETargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::MSP430TargetLowering::MSP430TargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::R600TargetLowering::R600TargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SITargetLowering::SITargetLowering(), llvm::SparcTargetLowering::SparcTargetLowering(), and llvm::SystemZTargetLowering::SystemZTargetLowering().

void llvm::TargetLoweringBase::setUseUnderscoreLongJmp ( bool  Val )

inlineprotected

Indicate whether this target prefers to use _longjmp to implement llvm.longjmp or the non _ version. Defaults to false.

Definition at line 890 of file TargetLowering.h.

Referenced by llvm::PPCTargetLowering::PPCTargetLowering(), and llvm::X86TargetLowering::resetOperationActions().

void llvm::TargetLoweringBase::setUseUnderscoreSetJmp ( bool  Val )

inlineprotected

Indicate whether this target prefers to use _setjmp to implement llvm.setjmp or the non _ version. Defaults to false.

Definition at line 884 of file TargetLowering.h.

Referenced by llvm::PPCTargetLowering::PPCTargetLowering(), and llvm::X86TargetLowering::resetOperationActions().

virtual bool llvm::TargetLoweringBase::ShouldShrinkFPConstant ( EVT  ) const

inlinevirtual

If true, then instruction selection should seek to shrink the FP constant of the specified type to a smaller type in order to save space and / or reduce runtime.

Reimplemented in llvm::X86TargetLowering, llvm::SparcTargetLowering, and llvm::AMDGPUTargetLowering.

Definition at line 669 of file TargetLowering.h.

virtual bool llvm::TargetLoweringBase::shouldSplitVectorElementType ( EVT  ) const

inlinevirtual

Return true if a vector of the given type should be split (TypeSplitVector) instead of promoted (TypePromoteInteger) during type legalization.

Reimplemented in llvm::NVPTXTargetLowering, and llvm::SITargetLowering.

Definition at line 179 of file TargetLowering.h.

Referenced by computeRegisterProperties().

bool llvm::TargetLoweringBase::supportJumpTables ( ) const

inline

Return whether the target can generate code for jump tables.

Definition at line 761 of file TargetLowering.h.

Referenced by areJTsAllowed().

bool llvm::TargetLoweringBase::usesUnderscoreLongJmp ( ) const

inline

Determine if we should use _longjmp or longjmp to implement llvm.longjmp.

Definition at line 756 of file TargetLowering.h.

bool llvm::TargetLoweringBase::usesUnderscoreSetJmp ( ) const

inline

Determine if we should use _setjmp or setjmp to implement llvm.setjmp.

Definition at line 751 of file TargetLowering.h.

Member Data Documentation

unsigned llvm::TargetLoweringBase::MaxStoresPerMemcpy

protected

Specify maximum bytes of store instructions per memcpy call.

When lowering @llvm.memcpy this field specifies the maximum number of store operations that may be substituted for a call to memcpy. Targets must set this value based on the cost threshold for that target. Targets should assume that the memcpy will be done using as many of the largest store operations first, followed by smaller ones, if necessary, per alignment restrictions. For example, storing 7 bytes on a 32-bit machine with 32-bit alignment would result in one 4-byte store, a one 2-byte store and one 1-byte store. This only applies to copying a constant array of constant size.

Definition at line 1658 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), getMaxStoresPerMemcpy(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::MipsTargetLowering::MipsTargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SystemZTargetLowering::SystemZTargetLowering(), TargetLoweringBase(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

unsigned llvm::TargetLoweringBase::MaxStoresPerMemcpyOptSize

protected

Maximum number of store operations that may be substituted for a call to memcpy, used for functions with OptSize attribute.

Definition at line 1662 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), getMaxStoresPerMemcpy(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SystemZTargetLowering::SystemZTargetLowering(), TargetLoweringBase(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

unsigned llvm::TargetLoweringBase::MaxStoresPerMemmove

protected

Specify maximum bytes of store instructions per memmove call.

When lowering @llvm.memmove this field specifies the maximum number of store instructions that may be substituted for a call to memmove. Targets must set this value based on the cost threshold for that target. Targets should assume that the memmove will be done using as many of the largest store operations first, followed by smaller ones, if necessary, per alignment restrictions. For example, moving 9 bytes on a 32-bit machine with 8-bit alignment would result in nine 1-byte stores. This only applies to copying a constant array of constant size.

Definition at line 1674 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), getMaxStoresPerMemmove(), llvm::HexagonTargetLowering::HexagonTargetLowering(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), TargetLoweringBase(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

unsigned llvm::TargetLoweringBase::MaxStoresPerMemmoveOptSize

protected

Maximum number of store instructions that may be substituted for a call to memmove, used for functions with OpSize attribute.

Definition at line 1678 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), getMaxStoresPerMemmove(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), TargetLoweringBase(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

unsigned llvm::TargetLoweringBase::MaxStoresPerMemset

protected

Specify maximum number of store instructions per memset call.

When lowering @llvm.memset this field specifies the maximum number of store operations that may be substituted for the call to memset. Targets must set this value based on the cost threshold for that target. Targets should assume that the memset will be done using as many of the largest store operations first, followed by smaller ones, if necessary, per alignment restrictions. For example, storing 9 bytes on a 32-bit machine with 16-bit alignment would result in four 2-byte stores and one 1-byte store. This only applies to setting a constant array of a constant size.

Definition at line 1641 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), getMaxStoresPerMemset(), llvm::NVPTXTargetLowering::NVPTXTargetLowering(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SystemZTargetLowering::SystemZTargetLowering(), TargetLoweringBase(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

unsigned llvm::TargetLoweringBase::MaxStoresPerMemsetOptSize

protected

Maximum number of stores operations that may be substituted for the call to memset, used for functions with OptSize attribute.

Definition at line 1645 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), getMaxStoresPerMemset(), llvm::PPCTargetLowering::PPCTargetLowering(), llvm::X86TargetLowering::resetOperationActions(), llvm::SystemZTargetLowering::SystemZTargetLowering(), TargetLoweringBase(), and llvm::XCoreTargetLowering::XCoreTargetLowering().

bool llvm::TargetLoweringBase::PredictableSelectIsExpensive

protected

Tells the code generator that select is more expensive than a branch if the branch is usually predicted right.

Definition at line 1682 of file TargetLowering.h.

Referenced by llvm::ARMTargetLowering::ARMTargetLowering(), isPredictableSelectExpensive(), llvm::X86TargetLowering::resetOperationActions(), and TargetLoweringBase().

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

• TargetLowering.h
• TargetLoweringBase.cpp