llvm::MachineOperandIteratorBase Class Reference

#include <MachineInstrBundle.h>

Inheritance diagram for llvm::MachineOperandIteratorBase:

Classes
struct	PhysRegInfo
struct	VirtRegInfo

Public Member Functions
bool	isValid () const
	isValid - Returns true until all the operands have been visited. More...
void	operator++ ()
	Preincrement. Move to the next operand. More...
unsigned	getOperandNo () const
VirtRegInfo	analyzeVirtReg (unsigned Reg, SmallVectorImpl< std::pair< MachineInstr *, unsigned > > *Ops=0)
PhysRegInfo	analyzePhysReg (unsigned Reg, const TargetRegisterInfo *TRI)

Protected Member Functions
	MachineOperandIteratorBase (MachineInstr *MI, bool WholeBundle)
MachineOperand &	deref () const

Detailed Description

MachineOperandIteratorBase - Iterator that can visit all operands on a MachineInstr, or all operands on a bundle of MachineInstrs. This class is not intended to be used directly, use one of the sub-classes instead.

Intended use:

for (MIBundleOperands MIO(MI); MIO.isValid(); ++MIO) { if (!MIO->isReg()) continue; ... }

Definition at line 94 of file MachineInstrBundle.h.

Constructor & Destructor Documentation

llvm::MachineOperandIteratorBase::MachineOperandIteratorBase ( MachineInstr *  MI, bool  WholeBundle  )

inlineexplicitprotected

MachineOperandIteratorBase - Create an iterator that visits all operands on MI, or all operands on every instruction in the bundle containing MI.

Parameters

MI	The instruction to examine.
WholeBundle	When true, visit all operands on the entire bundle.

Definition at line 117 of file MachineInstrBundle.h.

References llvm::getBundleStart(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::instr_end(), and llvm::A64CC::MI.

Member Function Documentation

MachineOperandIteratorBase::PhysRegInfo MachineOperandIteratorBase::analyzePhysReg	(	unsigned	Reg,
		const TargetRegisterInfo *	TRI
	)

analyzePhysReg - Analyze how the current instruction or bundle uses a physical register. This function should not be called after operator++(), it expects a fresh iterator.

Parameters

Reg	The physical register to analyze.

Returns

A filled-in PhysRegInfo struct.

Definition at line 281 of file MachineInstrBundle.cpp.

References llvm::MachineOperandIteratorBase::PhysRegInfo::Clobbers, llvm::MachineOperand::clobbersPhysReg(), llvm::MachineOperandIteratorBase::PhysRegInfo::Defines, llvm::MachineOperandIteratorBase::PhysRegInfo::DefinesDead, deref(), llvm::MachineOperand::getReg(), if(), llvm::MachineOperand::isDead(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isKill(), llvm::TargetRegisterInfo::isPhysicalRegister(), llvm::MachineOperand::isReg(), llvm::MachineOperand::isRegMask(), llvm::MCRegisterInfo::isSubRegister(), isValid(), llvm::MachineOperandIteratorBase::PhysRegInfo::Kills, llvm::MachineOperandIteratorBase::PhysRegInfo::Reads, llvm::MachineOperandIteratorBase::PhysRegInfo::ReadsOverlap, llvm::MachineOperand::readsReg(), and llvm::TargetRegisterInfo::regsOverlap().

Referenced by llvm::MachineBasicBlock::computeRegisterLiveness().

MachineOperandIteratorBase::VirtRegInfo MachineOperandIteratorBase::analyzeVirtReg	(	unsigned	Reg,
		SmallVectorImpl< std::pair< MachineInstr *, unsigned > > *	Ops = 0
	)

analyzeVirtReg - Analyze how the current instruction or bundle uses a virtual register. This function should not be called after operator++(), it expects a fresh iterator.

Parameters

Reg	The virtual register to analyze.
Ops	When set, this vector will receive an (MI, OpNum) entry for each operand referring to Reg.

Returns

A filled-in RegInfo struct.

Definition at line 252 of file MachineInstrBundle.cpp.

References deref(), getOperandNo(), llvm::MachineOperand::getParent(), llvm::MachineOperand::getReg(), if(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), llvm::MachineInstr::isRegTiedToDefOperand(), isValid(), llvm::MachineOperandIteratorBase::VirtRegInfo::Reads, llvm::MachineOperand::readsReg(), llvm::MachineOperandIteratorBase::VirtRegInfo::Tied, and llvm::MachineOperandIteratorBase::VirtRegInfo::Writes.

MachineOperand& llvm::MachineOperandIteratorBase::deref ( ) const

inlineprotected

Definition at line 131 of file MachineInstrBundle.h.

Referenced by analyzePhysReg(), analyzeVirtReg(), llvm::MIOperands::operator*(), llvm::ConstMIOperands::operator*(), llvm::MIBundleOperands::operator*(), llvm::ConstMIBundleOperands::operator*(), llvm::MIOperands::operator->(), llvm::ConstMIOperands::operator->(), llvm::MIBundleOperands::operator->(), and llvm::ConstMIBundleOperands::operator->().

unsigned llvm::MachineOperandIteratorBase::getOperandNo ( ) const

inline

getOperandNo - Returns the number of the current operand relative to its instruction.

Definition at line 147 of file MachineInstrBundle.h.

Referenced by analyzeVirtReg().

bool llvm::MachineOperandIteratorBase::isValid ( ) const

inline

isValid - Returns true until all the operands have been visited.

Definition at line 135 of file MachineInstrBundle.h.

Referenced by analyzePhysReg(), analyzeVirtReg(), collectOperands(), getDataDeps(), operator++(), RemoveKills(), llvm::LiveRegUnits::stepBackward(), llvm::LiveRegUnits::stepForward(), llvm::LiveIntervals::HMEditor::updateAllRanges(), updatePhysDepsDownwards(), updatePhysDepsUpwards(), and UpdatePredRedefs().

void llvm::MachineOperandIteratorBase::operator++ ( )

inline

Preincrement. Move to the next operand.

Definition at line 138 of file MachineInstrBundle.h.

References isValid().

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

• MachineInstrBundle.h
• MachineInstrBundle.cpp