#include "Target/AMDGPU/GCNRegPressure.h"

Inheritance diagram for llvm::GCNUpwardRPTracker:

Public Member Functions
	GCNUpwardRPTracker (const LiveIntervals &LIS_)

void	reset (const MachineRegisterInfo &MRI, SlotIndex SI)
	reset tracker at the specified slot index `SI`.

void	reset (const MachineBasicBlock &MBB)
	reset tracker to the end of the `MBB`.

void	reset (const MachineInstr &MI)
	reset tracker to the point just after `MI` (in program order).

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.

const GCNRegPressure &	getMaxPressure () const

void	resetMaxPressure ()

GCNRegPressure	getMaxPressureAndReset ()

void	reset (const MachineInstr &MI, const LiveRegSet *LiveRegsCopy, bool After)

void	reset (const MachineRegisterInfo &MRI_, const LiveRegSet &LiveRegs_)

Public Member Functions inherited from llvm::GCNRPTracker
void	reset (const MachineRegisterInfo &MRI_, const LiveRegSet &LiveRegs_)

const decltype(LiveRegs) &	getLiveRegs () const

const MachineInstr *	getLastTrackedMI () const

void	clearMaxPressure ()

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 (const LiveIntervals &LIS_)

void	reset (const MachineInstr &MI, const LiveRegSet *LiveRegsCopy, bool After)

void	bumpDeadDefs (ArrayRef< RegisterMaskPair > DeadDefs)
	Mostly copy/paste from CodeGen/RegisterPressure.cpp.

LaneBitmask	getLastUsedLanes (Register RegUnit, SlotIndex Pos) const
	Mostly copy/paste from CodeGen/RegisterPressure.cpp.

Protected Attributes inherited from llvm::GCNRPTracker
const LiveIntervals &	LIS

LiveRegSet	LiveRegs

GCNRegPressure	CurPressure

GCNRegPressure	MaxPressure

const MachineInstr *	LastTrackedMI = nullptr

const MachineRegisterInfo *	MRI = nullptr

Detailed Description

Definition at line 199 of file GCNRegPressure.h.

Constructor & Destructor Documentation

◆ GCNUpwardRPTracker()

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

inline

Definition at line 201 of file GCNRegPressure.h.

Member Function Documentation

◆ getMaxPressure()

const GCNRegPressure & llvm::GCNUpwardRPTracker::getMaxPressure ( ) const

inline

Definition at line 230 of file GCNRegPressure.h.

References llvm::GCNRPTracker::MaxPressure.

Referenced by llvm::GCNRegPressurePrinter::runOnMachineFunction().

◆ getMaxPressureAndReset()

GCNRegPressure llvm::GCNUpwardRPTracker::getMaxPressureAndReset ( )

inline

Definition at line 234 of file GCNRegPressure.h.

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

Referenced by llvm::GCNIterativeScheduler::getRegionPressure().

◆ isValid()

bool GCNUpwardRPTracker::isValid ( ) const

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

Definition at line 715 of file GCNRegPressure.cpp.

References llvm::GCNRPTracker::CurPressure, llvm::dbgs(), llvm::SlotIndex::getBaseIndex(), llvm::LiveIntervals::getInstructionIndex(), llvm::getLiveRegs(), llvm::getRegPressure(), llvm::MachineRegisterInfo::getTargetRegisterInfo(), llvm::isEqual(), llvm::GCNRPTracker::LIS, llvm::GCNRPTracker::LiveRegs, llvm::GCNRPTracker::MRI, llvm::print(), and llvm::reportMismatch().

Referenced by llvm::GCNIterativeScheduler::getRegionPressure().

◆ 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 436 of file GCNRegPressure.cpp.

References assert(), collectVirtualRegUses(), llvm::GCNRPTracker::CurPressure, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::erase(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), 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().