#include <MachineMemOperand.h>

Public Types
enum	MemOperandFlags { MOLoad = 1, MOStore = 2, MOVolatile = 4, MONonTemporal = 8, MOInvariant = 16, MOTargetStartBit = 5, MOTargetNumBits = 3, MOMaxBits = 8 }
	Flags values. These may be or'd together. More...
Public Member Functions
	MachineMemOperand (MachinePointerInfo PtrInfo, unsigned flags, uint64_t s, unsigned base_alignment, const MDNode TBAAInfo=0, const MDNode Ranges=0)
const MachinePointerInfo &	getPointerInfo () const
const Value *	getValue () const
unsigned int	getFlags () const
	getFlags - Return the raw flags of the source value,
void	setFlags (unsigned f)
	Bitwise OR the current flags with the given flags.
int64_t	getOffset () const
uint64_t	getSize () const
	getSize - Return the size in bytes of the memory reference.
uint64_t	getAlignment () const
uint64_t	getBaseAlignment () const
const MDNode *	getTBAAInfo () const
	getTBAAInfo - Return the TBAA tag for the memory reference.
const MDNode *	getRanges () const
	getRanges - Return the range tag for the memory reference.
bool	isLoad () const
bool	isStore () const
bool	isVolatile () const
bool	isNonTemporal () const
bool	isInvariant () const
bool	isUnordered () const
void	refineAlignment (const MachineMemOperand *MMO)
void	setValue (const Value *NewSV)
void	setOffset (int64_t NewOffset)
void	Profile (FoldingSetNodeID &ID) const

Detailed Description

MachineMemOperand - A description of a memory reference used in the backend. Instead of holding a StoreInst or LoadInst, this class holds the address Value of the reference along with a byte size and offset. This allows it to describe lowered loads and stores. Also, the special PseudoSourceValue objects can be used to represent loads and stores to memory locations that aren't explicit in the regular LLVM IR.

Definition at line 82 of file MachineMemOperand.h.

Member Enumeration Documentation

enum llvm::MachineMemOperand::MemOperandFlags

Flags values. These may be or'd together.

Enumerator:

MOLoad	The memory access reads data.
MOStore	The memory access writes data.
MOVolatile	The memory access is volatile.
MONonTemporal	The memory access is non-temporal.
MOInvariant	The memory access is invariant.
MOTargetStartBit
MOTargetNumBits
MOMaxBits

Definition at line 91 of file MachineMemOperand.h.

Constructor & Destructor Documentation

MachineMemOperand::MachineMemOperand	(	MachinePointerInfo	PtrInfo,
		unsigned	flags,
		uint64_t	s,
		unsigned	base_alignment,
		const MDNode *	TBAAInfo = `0`,
		const MDNode *	Ranges = `0`
	)

MachineMemOperand - Construct an MachineMemOperand object with the specified PtrInfo, flags, size, and base alignment.

Definition at line 420 of file MachineInstr.cpp.

Member Function Documentation

uint64_t MachineMemOperand::getAlignment ( ) const

getAlignment - Return the minimum known alignment in bytes of the actual memory reference.

Definition at line 460 of file MachineInstr.cpp.

Referenced by llvm::MemSDNode::getAlignment(), isMemoryOp(), llvm::X86InstrInfo::loadRegFromAddr(), and llvm::X86InstrInfo::storeRegToAddr().

uint64_t llvm::MachineMemOperand::getBaseAlignment ( ) const [inline]

getBaseAlignment - Return the minimum known alignment in bytes of the base address, without the offset.

Definition at line 146 of file MachineMemOperand.h.

References MOMaxBits.

Referenced by llvm::MachineFunction::getMachineMemOperand(), and llvm::MemSDNode::getOriginalAlignment().

unsigned int llvm::MachineMemOperand::getFlags ( ) const [inline]

getFlags - Return the raw flags of the source value,

See also:: MemOperandFlags.

Definition at line 127 of file MachineMemOperand.h.

References MOMaxBits.

Referenced by llvm::MachineFunction::getMachineMemOperand(), and llvm::PPCTargetLowering::PerformDAGCombine().

int64_t llvm::MachineMemOperand::getOffset ( ) const [inline]

getOffset - For normal values, this is a byte offset added to the base address. For PseudoSourceValue::FPRel values, this is the FrameIndex number.

Definition at line 135 of file MachineMemOperand.h.

References llvm::MachinePointerInfo::Offset.

Referenced by llvm::PPCHazardRecognizer970::EmitInstruction(), llvm::PPCHazardRecognizer970::getHazardType(), llvm::MachineFunction::getMachineMemOperand(), llvm::MemSDNode::getSrcValueOffset(), and MIsNeedChainEdge().

const MachinePointerInfo& llvm::MachineMemOperand::getPointerInfo ( ) const [inline]

Definition at line 115 of file MachineMemOperand.h.

Referenced by llvm::SelectionDAG::getAtomic(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::MemSDNode::getPointerInfo(), llvm::SelectionDAG::getStore(), and llvm::SelectionDAG::getTruncStore().

const MDNode* llvm::MachineMemOperand::getRanges ( ) const [inline]

getRanges - Return the range tag for the memory reference.

Definition at line 152 of file MachineMemOperand.h.

Referenced by llvm::MemSDNode::getRanges().

uint64_t llvm::MachineMemOperand::getSize ( ) const [inline]

getSize - Return the size in bytes of the memory reference.

Definition at line 138 of file MachineMemOperand.h.

Referenced by emitComments(), llvm::PPCHazardRecognizer970::EmitInstruction(), llvm::MachineFunction::extractLoadMemRefs(), llvm::MachineFunction::extractStoreMemRefs(), llvm::PPCHazardRecognizer970::getHazardType(), llvm::MemSDNode::MemSDNode(), and MIsNeedChainEdge().

const MDNode* llvm::MachineMemOperand::getTBAAInfo ( ) const [inline]

getTBAAInfo - Return the TBAA tag for the memory reference.

Definition at line 149 of file MachineMemOperand.h.

Referenced by llvm::MemSDNode::getTBAAInfo(), and MIsNeedChainEdge().

const Value* llvm::MachineMemOperand::getValue ( ) const [inline]

getValue - Return the base address of the memory access. This may either be a normal LLVM IR Value, or one of the special values used in CodeGen. Special values are those obtained via PseudoSourceValue::getFixedStack(int), PseudoSourceValue::getStack, and other PseudoSourceValue member functions which return objects which stand for frame/stack pointer relative references and other special references which are not representable in the high-level IR.

Definition at line 124 of file MachineMemOperand.h.

References llvm::MachinePointerInfo::V.

Referenced by llvm::PPCHazardRecognizer970::EmitInstruction(), llvm::PPCHazardRecognizer970::getHazardType(), llvm::MachineFunction::getMachineMemOperand(), llvm::MemSDNode::getSrcValue(), and MIsNeedChainEdge().

bool llvm::MachineMemOperand::isInvariant ( ) const [inline]

Definition at line 158 of file MachineMemOperand.h.

References MOInvariant.

Referenced by llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getTruncStore(), and llvm::MemSDNode::MemSDNode().

bool llvm::MachineMemOperand::isLoad ( ) const [inline]

Definition at line 154 of file MachineMemOperand.h.

References MOLoad.

Referenced by llvm::MemSDNode::readMem().

bool llvm::MachineMemOperand::isNonTemporal ( ) const [inline]

Definition at line 157 of file MachineMemOperand.h.

References MONonTemporal.

Referenced by llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getTruncStore(), and llvm::MemSDNode::MemSDNode().

bool llvm::MachineMemOperand::isStore ( ) const [inline]

Definition at line 155 of file MachineMemOperand.h.

References MOStore.

Referenced by llvm::MemSDNode::writeMem().

bool llvm::MachineMemOperand::isUnordered ( ) const [inline]

isUnordered - Returns true if this memory operation doesn't have any ordering constraints other than normal aliasing. Volatile and atomic memory operations can't be reordered.

Currently, we don't model the difference between volatile and atomic operations. They should retain their ordering relative to all memory operations.

Definition at line 167 of file MachineMemOperand.h.

References isVolatile().

bool llvm::MachineMemOperand::isVolatile ( ) const [inline]

Definition at line 156 of file MachineMemOperand.h.

References MOVolatile.

Referenced by llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getTruncStore(), isMemoryOp(), isUnordered(), and llvm::MemSDNode::MemSDNode().

void MachineMemOperand::Profile ( FoldingSetNodeID & ID ) const

Profile - Gather unique data for the object.

Definition at line 435 of file MachineInstr.cpp.

void MachineMemOperand::refineAlignment ( const MachineMemOperand * MMO )

refineAlignment - Update this MachineMemOperand to reflect the alignment of MMO, if it has a greater alignment. This must only be used when the new alignment applies to all users of this MachineMemOperand.

Definition at line 442 of file MachineInstr.cpp.

Referenced by llvm::MemSDNode::refineAlignment().

void llvm::MachineMemOperand::setFlags ( unsigned f ) [inline]

Bitwise OR the current flags with the given flags.

Definition at line 130 of file MachineMemOperand.h.

References MOMaxBits.

void llvm::MachineMemOperand::setOffset ( int64_t NewOffset ) [inline]

Definition at line 178 of file MachineMemOperand.h.

References llvm::MachinePointerInfo::Offset.

void llvm::MachineMemOperand::setValue ( const Value * NewSV ) [inline]

setValue - Change the SourceValue for this MachineMemOperand. This should only be used when an object is being relocated and all references to it are being updated.

Definition at line 177 of file MachineMemOperand.h.

References llvm::MachinePointerInfo::V.

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

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation