llvm::GCNUpwardRPTracker Class Reference

#include "Target/AMDGPU/GCNRegPressure.h"

Inheritance diagram for llvm::GCNUpwardRPTracker:

Public Member Functions
	GCNUpwardRPTracker (LiveIntervals &LIS_)
void	reset (const MachineInstr &MI)
	Resets tracker to the point just after MI (in program order), which can be a debug instruction.
void	recede (const MachineInstr &MI)
	Move to the state of RP just before the MI .
bool	isValid () const
	returns whether the tracker's state after receding MI corresponds to reported by LIS.
GCNRegPressure	getMaxPressureAndReset ()
void	reset (const MachineInstr &MI, bool After)
	Resets tracker before or After the provided MI, which can be a debug instruction.
void	reset (const MachineBasicBlock &MBB, bool End)
	Resets tracker at the start or End of the MBB.
void	reset (const MachineRegisterInfo &MRI, SlotIndex SI)
	Resets tracker at the specified slot index SI.
void	reset (const MachineRegisterInfo &MRI, const LiveRegSet &LiveRegs)
	Resets tracker with the provided LiveRegs.
Public Member Functions inherited from llvm::GCNRPTracker
void	reset (const MachineRegisterInfo &MRI, const LiveRegSet &LiveRegs)
	Resets tracker with the provided LiveRegs.
const decltype(LiveRegs) &	getLiveRegs () const
const MachineInstr *	getLastTrackedMI () const
void	clearMaxPressure ()
const GCNRegPressure &	getMaxPressure () const
void	resetMaxPressure ()
GCNRegPressure	getPressure () const
decltype(LiveRegs)	moveLiveRegs ()

Additional Inherited Members
Public Types inherited from llvm::GCNRPTracker
using	LiveRegSet = DenseMap<unsigned, LaneBitmask>
Protected Member Functions inherited from llvm::GCNRPTracker
	GCNRPTracker (LiveIntervals &LIS_)
void	reset (const MachineInstr &MI, bool After)
	Resets tracker before or After the provided MI, which can be a debug instruction.
void	reset (const MachineBasicBlock &MBB, bool End)
	Resets tracker at the start or End of the MBB.
void	reset (const MachineRegisterInfo &MRI, SlotIndex SI)
	Resets tracker at the specified slot index SI.
LaneBitmask	getLastUsedLanes (Register Reg, SlotIndex Pos) const
	Mostly copy/paste from CodeGen/RegisterPressure.cpp.
Protected Attributes inherited from llvm::GCNRPTracker
LiveIntervals &	LIS
LiveRegSet	LiveRegs
GCNRegPressure	CurPressure
GCNRegPressure	MaxPressure
const MachineInstr *	LastTrackedMI = nullptr
const MachineRegisterInfo *	MRI = nullptr

Detailed Description

Definition at line 362 of file GCNRegPressure.h.

Constructor & Destructor Documentation

GCNUpwardRPTracker()

llvm::GCNUpwardRPTracker::GCNUpwardRPTracker ( LiveIntervals & LIS_ )

inline

Definition at line 364 of file GCNRegPressure.h.

References llvm::GCNRPTracker::GCNRPTracker().

Member Function Documentation

getMaxPressureAndReset()

GCNRegPressure llvm::GCNUpwardRPTracker::getMaxPressureAndReset ( )

inline

Definition at line 381 of file GCNRegPressure.h.

References llvm::GCNRPTracker::MaxPressure, and llvm::GCNRPTracker::resetMaxPressure().

isValid()

bool GCNUpwardRPTracker::isValid

(

)

const

returns whether the tracker's state after receding MI corresponds to reported by LIS.

Definition at line 903 of file GCNRegPressure.cpp.

References llvm::GCNRPTracker::CurPressure, llvm::dbgs(), llvm::getLiveRegs(), llvm::getRegPressure(), llvm::isEqual(), llvm::GCNRPTracker::LIS, llvm::GCNRPTracker::LiveRegs, llvm::GCNRPTracker::MRI, llvm::print(), and llvm::reportMismatch().

recede()

void GCNUpwardRPTracker::recede

(

const MachineInstr &

MI

)

Move to the state of RP just before the MI .

If UseInternalIterator is set, also update the internal iterators. Setting UseInternalIterator to false allows for an externally managed iterator / program order.

Definition at line 589 of file GCNRegPressure.cpp.

References assert(), collectVirtualRegUses(), llvm::GCNRPTracker::CurPressure, getDefRegMask(), llvm::LaneBitmask::getNone(), llvm::getRegPressure(), I, llvm::GCNRegPressure::inc(), llvm::GCNRPTracker::LastTrackedMI, llvm::GCNRPTracker::LIS, llvm::GCNRPTracker::LiveRegs, llvm::max(), llvm::GCNRPTracker::MaxPressure, MI, llvm::GCNRPTracker::MRI, and llvm::LaneBitmask::none().

Referenced by llvm::dumpMaxRegPressure(), llvm::GCNSchedStrategy::getRegisterPressures(), and llvm::GCNRegPressurePrinter::runOnMachineFunction().

reset() [1/5]

void GCNRPTracker::reset	(	const MachineBasicBlock &	MBB,
		bool	End )

Resets tracker at the start or End of the MBB.

Definition at line 326 of file GCNRegPressure.cpp.

References assert().

reset() [2/5]

void llvm::GCNUpwardRPTracker::reset ( const MachineInstr & MI )

inline

Resets tracker to the point just after MI (in program order), which can be a debug instruction.

Definition at line 370 of file GCNRegPressure.h.

References MI, and reset().

Referenced by llvm::dumpMaxRegPressure(), reset(), and llvm::GCNRegPressurePrinter::runOnMachineFunction().

reset() [3/5]

void GCNRPTracker::reset	(	const MachineInstr &	MI,
		bool	After )

Resets tracker before or After the provided MI, which can be a debug instruction.

Definition at line 323 of file GCNRegPressure.cpp.

reset() [4/5]

void GCNRPTracker::reset	(	const MachineRegisterInfo &	MRI,
		const LiveRegSet &	LiveRegs )

Resets tracker with the provided LiveRegs.

Definition at line 335 of file GCNRegPressure.cpp.

reset() [5/5]

void GCNRPTracker::reset	(	const MachineRegisterInfo &	MRI,
		SlotIndex	SI )

Resets tracker at the specified slot index SI.

Definition at line 329 of file GCNRegPressure.cpp.

References llvm::GCNRPTracker::LIS, and llvm::LiveInterval::subranges().

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

• lib/Target/AMDGPU/GCNRegPressure.h
• lib/Target/AMDGPU/GCNRegPressure.cpp