MachineOperandIteratorBase - Iterator that can visit all operands on a MachineInstr, or all operands on a bundle of MachineInstrs. More...

#include "llvm/CodeGen/MachineInstrBundle.h"

Inheritance diagram for llvm::MachineOperandIteratorBase:

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Classes
struct	PhysRegInfo
	Information about how a physical register Reg is used by a set of operands. More...

struct	VirtRegInfo
	VirtRegInfo - Information about a virtual register used by a set of operands. More...

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

VirtRegInfo	analyzeVirtReg (unsigned Reg, SmallVectorImpl< std::pair< MachineInstr , unsigned > > Ops=nullptr)
	analyzeVirtReg - Analyze how the current instruction or bundle uses a virtual register. More...

PhysRegInfo	analyzePhysReg (unsigned Reg, const TargetRegisterInfo *TRI)
	analyzePhysReg - Analyze how the current instruction or bundle uses a physical register. More...

Protected Member Functions
	MachineOperandIteratorBase (MachineInstr &MI, bool WholeBundle)
	MachineOperandIteratorBase - Create an iterator that visits all operands on MI, or all operands on every instruction in the bundle containing MI. More...

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 92 of file MachineInstrBundle.h.

Constructor & Destructor Documentation

◆ MachineOperandIteratorBase()

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 115 of file MachineInstrBundle.h.

References llvm::getBundleStart(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), and llvm::MachineBasicBlock::instr_end().

Member Function Documentation

◆ analyzePhysReg()

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 315 of file MachineInstrBundle.cpp.

Referenced by llvm::MachineBasicBlock::computeRegisterLiveness(), dumpMachineInstrRangeWithSlotIndex(), and parseCond().

◆ analyzeVirtReg()

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

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 286 of file MachineInstrBundle.cpp.

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

Referenced by isFullCopyOf(), and isFullUndefDef().

◆ deref()

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

inlineprotected

Definition at line 129 of file MachineInstrBundle.h.

Referenced by 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->().

◆ getOperandNo()

unsigned llvm::MachineOperandIteratorBase::getOperandNo ( ) const

inline

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

Definition at line 145 of file MachineInstrBundle.h.

◆ isValid()

bool llvm::MachineOperandIteratorBase::isValid ( ) const

inline

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

Definition at line 133 of file MachineInstrBundle.h.

Referenced by dumpMachineInstrRangeWithSlotIndex(), getLiveLanesAt(), llvm::MachineInstr::getRegClassConstraintEffectForVReg(), matchPair(), operator++(), llvm::recomputeLivenessFlags(), and llvm::LiveIntervals::HMEditor::updateAllRanges().

◆ operator++()

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

inline

Preincrement. Move to the next operand.

Definition at line 136 of file MachineInstrBundle.h.

References assert(), and isValid().

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

include/llvm/CodeGen/MachineInstrBundle.h
lib/CodeGen/MachineInstrBundle.cpp

Classes

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ MachineOperandIteratorBase()

Member Function Documentation

◆ analyzePhysReg()

◆ analyzeVirtReg()

◆ deref()

◆ getOperandNo()

◆ isValid()

◆ operator++()