llvm::MachineOperandIteratorBase Class Reference

#include <MachineInstrBundle.h>

Inheritance diagram for llvm::MachineOperandIteratorBase:

List of all members.

Classes
struct	PhysRegInfo
struct	VirtRegInfo
Public Member Functions
bool	isValid () const
	isValid - Returns true until all the operands have been visited.
void	operator++ ()
	Preincrement. Move to the next operand.
unsigned	getOperandNo () const
VirtRegInfo	analyzeVirtReg (unsigned Reg, SmallVectorImpl< std::pair< MachineInstr *, unsigned > > *Ops=nullptr)
PhysRegInfo	analyzePhysReg (unsigned Reg, const TargetRegisterInfo *TRI)
Protected Member Functions
	MachineOperandIteratorBase (MachineInstr *MI, bool WholeBundle)
MachineOperand &	deref () const

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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.

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Constructor & Destructor Documentation

llvm::MachineOperandIteratorBase::MachineOperandIteratorBase	(	MachineInstr *	MI,
		bool	WholeBundle
	)		[inline, explicit, protected]

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::AArch64CC::MI.

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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 282 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 = 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 253 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 [inline, protected]

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(), llvm::MachineInstr::getRegClassConstraintEffectForVReg(), operator++(), RemoveKills(), llvm::LivePhysRegs::stepBackward(), llvm::LivePhysRegs::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