llvm::MachinePointerInfo Struct Reference

This class contains a discriminated union of information about pointers in memory operands, relating them back to LLVM IR or to virtual locations (such as frame indices) that are exposed during codegen. More...

#include "llvm/CodeGen/MachineMemOperand.h"

Public Member Functions
	MachinePointerInfo (const Value *v, int64_t offset=0, uint8_t ID=0)
	MachinePointerInfo (const PseudoSourceValue *v, int64_t offset=0, uint8_t ID=0)
	MachinePointerInfo (unsigned AddressSpace=0, int64_t offset=0)
	MachinePointerInfo (PointerUnion< const Value *, const PseudoSourceValue * > v, int64_t offset=0, uint8_t ID=0)
MachinePointerInfo	getWithOffset (int64_t O) const
LLVM_ABI bool	isDereferenceable (unsigned Size, LLVMContext &C, const DataLayout &DL) const
	Return true if memory region [V, V+Offset+Size) is known to be dereferenceable.
LLVM_ABI unsigned	getAddrSpace () const
	Return the LLVM IR address space number that this pointer points into.

Static Public Member Functions
static LLVM_ABI MachinePointerInfo	getConstantPool (MachineFunction &MF)
	Return a MachinePointerInfo record that refers to the constant pool.
static LLVM_ABI MachinePointerInfo	getFixedStack (MachineFunction &MF, int FI, int64_t Offset=0)
	Return a MachinePointerInfo record that refers to the specified FrameIndex.
static LLVM_ABI MachinePointerInfo	getJumpTable (MachineFunction &MF)
	Return a MachinePointerInfo record that refers to a jump table entry.
static LLVM_ABI MachinePointerInfo	getGOT (MachineFunction &MF)
	Return a MachinePointerInfo record that refers to a GOT entry.
static LLVM_ABI MachinePointerInfo	getStack (MachineFunction &MF, int64_t Offset, uint8_t ID=0)
	Stack pointer relative access.
static LLVM_ABI MachinePointerInfo	getUnknownStack (MachineFunction &MF)
	Stack memory without other information.

Public Attributes
PointerUnion< const Value *, const PseudoSourceValue * >	V
	This is the IR pointer value for the access, or it is null if unknown.
int64_t	Offset
	Offset - This is an offset from the base Value*.
unsigned	AddrSpace = 0
uint8_t	StackID

Detailed Description

This class contains a discriminated union of information about pointers in memory operands, relating them back to LLVM IR or to virtual locations (such as frame indices) that are exposed during codegen.

Definition at line 42 of file MachineMemOperand.h.

Constructor & Destructor Documentation

MachinePointerInfo() [1/4]

llvm::MachinePointerInfo::MachinePointerInfo ( const Value *  v, int64_t  offset = 0, uint8_t  ID = 0  )

inlineexplicit

Definition at line 53 of file MachineMemOperand.h.

References AddrSpace.

MachinePointerInfo() [2/4]

llvm::MachinePointerInfo::MachinePointerInfo ( const PseudoSourceValue *  v, int64_t  offset = 0, uint8_t  ID = 0  )

inlineexplicit

Definition at line 59 of file MachineMemOperand.h.

References AddrSpace.

MachinePointerInfo() [3/4]

llvm::MachinePointerInfo::MachinePointerInfo ( unsigned  AddressSpace = 0, int64_t  offset = 0  )

inlineexplicit

Definition at line 65 of file MachineMemOperand.h.

MachinePointerInfo() [4/4]

llvm::MachinePointerInfo::MachinePointerInfo ( PointerUnion< const Value *, const PseudoSourceValue * >  v, int64_t  offset = 0, uint8_t  ID = 0  )

inlineexplicit

Definition at line 69 of file MachineMemOperand.h.

References AddrSpace, and V.

Member Function Documentation

getAddrSpace()

unsigned MachinePointerInfo::getAddrSpace

(

)

const

Return the LLVM IR address space number that this pointer points into.

getAddrSpace - Return the LLVM IR address space number that this pointer points into.

Definition at line 1038 of file MachineOperand.cpp.

References AddrSpace.

Referenced by AddNodeIDCustom(), llvm::X86SelectionDAGInfo::EmitTargetCodeForMemcpy(), llvm::X86SelectionDAGInfo::EmitTargetCodeForMemset(), llvm::MemSDNode::getAddressSpace(), llvm::SelectionDAG::getAtomic(), llvm::SelectionDAG::getGatherVP(), llvm::SelectionDAG::getGetFPEnv(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getLoadFFVP(), llvm::SelectionDAG::getLoadVP(), llvm::SelectionDAG::getMaskedGather(), llvm::SelectionDAG::getMaskedHistogram(), llvm::SelectionDAG::getMaskedLoad(), llvm::SelectionDAG::getMaskedScatter(), llvm::SelectionDAG::getMaskedStore(), llvm::SelectionDAG::getMemcpy(), getMemcpyLoadsAndStores(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getMemmove(), getMemmoveLoadsAndStores(), llvm::SelectionDAG::getMemset(), getMemsetStores(), llvm::SelectionDAG::getScatterVP(), llvm::SelectionDAG::getSetFPEnv(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getStoreVP(), llvm::SelectionDAG::getStridedLoadVP(), llvm::SelectionDAG::getStridedStoreVP(), llvm::SelectionDAG::getTruncStoreVP(), llvm::SelectionDAG::getTruncStridedStoreVP(), llvm::MipsCallLowering::lowerFormalArguments(), llvm::CombinerHelper::matchCombineExtractedVectorLoad(), narrowExtractedVectorLoad(), and llvm::TargetLowering::scalarizeExtractedVectorLoad().

getConstantPool()

MachinePointerInfo MachinePointerInfo::getConstantPool ( MachineFunction &  MF )

static

Return a MachinePointerInfo record that refers to the constant pool.

getConstantPool - Return a MachinePointerInfo record that refers to the constant pool.

Definition at line 1058 of file MachineOperand.cpp.

References llvm::PseudoSourceValueManager::getConstantPool(), and llvm::MachineFunction::getPSVManager().

Referenced by combineConcatVectorOps(), combineTargetShuffle(), llvm::TargetLowering::CTTZTableLookup(), emitLoadFromConstantPool(), llvm::CSKYInstrInfo::getGlobalBaseReg(), getLargeExternalSymbol(), getLargeGlobalAddress(), lowerBuildVectorAsBroadcast(), llvm::XtensaTargetLowering::LowerCall(), LowerUINT_TO_FP_i64(), lowerUINT_TO_FP_vXi32(), and llvm::X86TargetLowering::SimplifyDemandedVectorEltsForTargetShuffle().

getFixedStack()

MachinePointerInfo MachinePointerInfo::getFixedStack ( MachineFunction &  MF, int  FI, int64_t  Offset = 0  )

static

Return a MachinePointerInfo record that refers to the specified FrameIndex.

getFixedStack - Return a MachinePointerInfo record that refers to the the specified FrameIndex.

Definition at line 1064 of file MachineOperand.cpp.

References llvm::PseudoSourceValueManager::getFixedStack(), llvm::MachineFunction::getPSVManager(), and Offset.

Referenced by llvm::addFrameReference(), addFrameReference(), llvm::M68k::addFrameReference(), llvm::M68k::addMemOperand(), buildEpilogRestore(), llvm::X86TargetLowering::BuildFILD(), buildPrologSpill(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), llvm::LegalizerHelper::createStackTemporary(), emitBuildPairF64Pseudo(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::TargetLoweringBase::emitPatchPoint(), llvm::X86FrameLowering::emitPrologue(), emitSplitF64Pseudo(), EmitTailCallStoreFPAndRetAddr(), EmitTailCallStoreRetAddr(), llvm::SelectionDAG::expandMultipleResultFPLibCall(), llvm::TargetLowering::expandUnalignedLoad(), llvm::TargetLowering::expandUnalignedStore(), llvm::TargetLowering::expandVECTOR_COMPRESS(), llvm::TargetLowering::expandVectorSplice(), foldInlineAsmMemOperand(), llvm::TargetInstrInfo::foldMemoryOperand(), getAddressForMemoryInput(), getFrameIndexMMO(), getMachineMemOperand(), llvm::MipsInstrInfo::GetMemOperand(), getStackAlignedMMO(), llvm::CallLowering::handleAssignments(), InferPointerInfo(), llvm::CallLowering::insertSRetLoads(), llvm::AArch64InstrInfo::loadRegFromStackSlot(), llvm::ARMBaseInstrInfo::loadRegFromStackSlot(), llvm::Thumb1InstrInfo::loadRegFromStackSlot(), llvm::Thumb2InstrInfo::loadRegFromStackSlot(), llvm::HexagonInstrInfo::loadRegFromStackSlot(), llvm::SparcInstrInfo::loadRegFromStackSlot(), llvm::VEInstrInfo::loadRegFromStackSlot(), llvm::LoongArchInstrInfo::loadRegFromStackSlot(), llvm::RISCVInstrInfo::loadRegFromStackSlot(), llvm::MSP430InstrInfo::loadRegFromStackSlot(), llvm::SIInstrInfo::loadRegFromStackSlot(), llvm::ARCInstrInfo::loadRegFromStackSlot(), llvm::AVRInstrInfo::loadRegFromStackSlot(), llvm::CSKYInstrInfo::loadRegFromStackSlot(), llvm::XCoreInstrInfo::loadRegFromStackSlot(), llvm::PPCInstrInfo::loadRegFromStackSlotNoUpd(), LowerATOMIC_STORE(), llvm::SITargetLowering::LowerCall(), llvm::SystemZTargetLowering::LowerCall(), llvm::LoongArchTargetLowering::LowerCall(), llvm::RISCVTargetLowering::LowerCall(), llvm::TargetLowering::LowerCallTo(), llvm::MipsCallLowering::lowerFormalArguments(), llvm::HexagonTargetLowering::LowerFormalArguments(), llvm::LoongArchTargetLowering::LowerFormalArguments(), llvm::RISCVTargetLowering::LowerFormalArguments(), llvm::SystemZTargetLowering::LowerFormalArguments(), llvm::VETargetLowering::LowerFormalArguments(), llvm::XtensaTargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_64(), llvm::ARMTargetLowering::PerformMVEExtCombine(), llvm::ARMTargetLowering::PerformMVETruncCombine(), llvm::RISCVDAGToDAGISel::PreprocessISelDAG(), llvm::X86TargetLowering::ReplaceNodeResults(), llvm::AArch64FrameLowering::restoreCalleeSavedRegisters(), llvm::SIFrameLowering::restoreCalleeSavedRegisters(), llvm::AArch64FrameLowering::spillCalleeSavedRegisters(), llvm::SIFrameLowering::spillCalleeSavedRegisters(), spillIncomingStatepointValue(), llvm::AArch64InstrInfo::storeRegToStackSlot(), llvm::ARMBaseInstrInfo::storeRegToStackSlot(), llvm::Thumb1InstrInfo::storeRegToStackSlot(), llvm::Thumb2InstrInfo::storeRegToStackSlot(), llvm::HexagonInstrInfo::storeRegToStackSlot(), llvm::LoongArchInstrInfo::storeRegToStackSlot(), llvm::RISCVInstrInfo::storeRegToStackSlot(), llvm::SparcInstrInfo::storeRegToStackSlot(), llvm::VEInstrInfo::storeRegToStackSlot(), llvm::SIInstrInfo::storeRegToStackSlot(), llvm::ARCInstrInfo::storeRegToStackSlot(), llvm::AVRInstrInfo::storeRegToStackSlot(), llvm::CSKYInstrInfo::storeRegToStackSlot(), llvm::MSP430InstrInfo::storeRegToStackSlot(), llvm::XCoreInstrInfo::storeRegToStackSlot(), llvm::PPCInstrInfo::storeRegToStackSlotNoUpd(), StoreTailCallArgumentsToStackSlot(), unpack64(), unpackF64OnLA32DSoftABI(), unpackF64OnRV32DSoftABI(), unpackFromMemLoc(), llvm::SelectionDAGBuilder::visitSPDescriptorFailure(), and llvm::SelectionDAGBuilder::visitSPDescriptorParent().

getGOT()

MachinePointerInfo MachinePointerInfo::getGOT ( MachineFunction &  MF )

static

Return a MachinePointerInfo record that refers to a GOT entry.

Definition at line 1073 of file MachineOperand.cpp.

References llvm::PseudoSourceValueManager::getGOT(), and llvm::MachineFunction::getPSVManager().

Referenced by expandLoadStackGuard(), llvm::ARMBaseInstrInfo::expandLoadStackGuardBase(), llvm::MipsTargetLowering::getAddrLocal(), getzOSCalleeAndADA(), llvm::AMDGPULegalizerInfo::legalizeGlobalValue(), LowerToTLSExecModel(), llvm::SparcTargetLowering::makeAddress(), and llvm::VETargetLowering::makeAddress().

getJumpTable()

MachinePointerInfo MachinePointerInfo::getJumpTable ( MachineFunction &  MF )

static

Return a MachinePointerInfo record that refers to a jump table entry.

Definition at line 1069 of file MachineOperand.cpp.

References llvm::PseudoSourceValueManager::getJumpTable(), and llvm::MachineFunction::getPSVManager().

getStack()

MachinePointerInfo MachinePointerInfo::getStack ( MachineFunction &  MF, int64_t  Offset, uint8_t  ID = 0  )

static

Stack pointer relative access.

Definition at line 1077 of file MachineOperand.cpp.

References llvm::MachineFunction::getPSVManager(), llvm::PseudoSourceValueManager::getStack(), and Offset.

Referenced by M68kOutgoingArgHandler::getStackAddress(), llvm::AMDGPUTargetLowering::loadStackInputValue(), llvm::SITargetLowering::LowerCall(), llvm::HexagonTargetLowering::LowerCall(), llvm::LoongArchTargetLowering::LowerCall(), llvm::RISCVTargetLowering::LowerCall(), and llvm::AMDGPUTargetLowering::storeStackInputValue().

getUnknownStack()

MachinePointerInfo MachinePointerInfo::getUnknownStack ( MachineFunction &  MF )

static

Stack memory without other information.

Definition at line 1082 of file MachineOperand.cpp.

References llvm::DataLayout::getAllocaAddrSpace(), and llvm::MachineFunction::getDataLayout().

Referenced by llvm::TargetLowering::expandVECTOR_COMPRESS(), llvm::TargetLowering::expandVectorSplice(), llvm::CallLowering::handleAssignments(), and llvm::LegalizerHelper::lowerVECTOR_COMPRESS().

getWithOffset()

MachinePointerInfo llvm::MachinePointerInfo::getWithOffset ( int64_t  O ) const

inline

Definition at line 82 of file MachineMemOperand.h.

References AddrSpace, llvm::PointerUnion< PTs >::isNull(), Offset, StackID, and V.

Referenced by llvm::SIRegisterInfo::buildSpillLoadStore(), combineExtractFromVectorLoad(), combineStore(), combineTargetShuffle(), emitBuildPairF64Pseudo(), emitConstantSizeRepmov(), emitConstantSizeRepstos(), emitSplitF64Pseudo(), llvm::ARMSelectionDAGInfo::EmitTargetCodeForMemcpy(), llvm::SystemZSelectionDAGInfo::EmitTargetCodeForMemset(), llvm::RISCVSelectionDAGInfo::EmitTargetCodeForMemset(), llvm::MachineFunction::getMachineMemOperand(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), llvm::LegalizerHelper::lowerExtractInsertVectorElt(), LowerF128Load(), LowerF128Store(), llvm::CombinerHelper::matchCombineExtractedVectorLoad(), PerformSplittingMVETruncToNarrowingStores(), PerformSplittingToNarrowingStores(), PerformSTORECombine(), prepareDescriptorIndirectCall(), llvm::RISCVDAGToDAGISel::PreprocessISelDAG(), reduceMaskedStoreToScalarStore(), llvm::TargetLowering::scalarizeExtractedVectorLoad(), ShrinkLoadReplaceStoreWithStore(), splitStoreSplat(), llvm::AMDGPUTargetLowering::SplitVectorLoad(), and llvm::AMDGPUTargetLowering::SplitVectorStore().

isDereferenceable()

bool MachinePointerInfo::isDereferenceable	(	unsigned	Size,
		LLVMContext &	C,
		const DataLayout &	DL
	)		const

Return true if memory region [V, V+Offset+Size) is known to be dereferenceable.

isDereferenceable - Return true if V is always dereferenceable for Offset + Size byte.

Definition at line 1042 of file MachineOperand.cpp.

References DL, llvm::isDereferenceableAndAlignedPointer(), Offset, Size, and V.

Referenced by EltsFromConsecutiveLoads(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), and llvm::AMDGPUTargetLowering::WidenOrSplitVectorLoad().

Member Data Documentation

AddrSpace

unsigned llvm::MachinePointerInfo::AddrSpace = 0

Definition at line 49 of file MachineMemOperand.h.

Referenced by getAddrSpace(), getWithOffset(), and MachinePointerInfo().

Offset

int64_t llvm::MachinePointerInfo::Offset

Offset - This is an offset from the base Value*.

Definition at line 47 of file MachineMemOperand.h.

Referenced by getFixedStack(), getStack(), getWithOffset(), llvm::inferAlignFromPtrInfo(), and isDereferenceable().

StackID

uint8_t llvm::MachinePointerInfo::StackID

Definition at line 51 of file MachineMemOperand.h.

Referenced by getWithOffset().

V

PointerUnion<const Value *, const PseudoSourceValue *> llvm::MachinePointerInfo::V

This is the IR pointer value for the access, or it is null if unknown.

Definition at line 44 of file MachineMemOperand.h.

Referenced by llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getLoadVP(), llvm::MachineFunction::getMachineMemOperand(), getMemcpyLoadsAndStores(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getTruncStore(), llvm::SelectionDAG::getTruncStoreVP(), getWithOffset(), llvm::inferAlignFromPtrInfo(), isDereferenceable(), llvm::MachineMemOperand::MachineMemOperand(), and MachinePointerInfo().

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

• include/llvm/CodeGen/MachineMemOperand.h
• lib/CodeGen/MachineOperand.cpp