llvm::RegisterPressure Struct Reference

Base class for register pressure results. More...

#include <RegisterPressure.h>

Inheritance diagram for llvm::RegisterPressure:

Collaboration diagram for llvm::RegisterPressure:

List of all members.

Public Member Functions
void	increase (unsigned Reg, const TargetRegisterInfo *TRI, const MachineRegisterInfo *MRI)
void	decrease (unsigned Reg, const TargetRegisterInfo *TRI, const MachineRegisterInfo *MRI)
void	dump (const TargetRegisterInfo *TRI) const
Public Attributes
std::vector< unsigned >	MaxSetPressure
	Map of max reg pressure indexed by pressure set ID, not class ID.
SmallVector< unsigned, 8 >	LiveInRegs
	List of live in virtual registers or physical register units.
SmallVector< unsigned, 8 >	LiveOutRegs

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Detailed Description

Base class for register pressure results.

Definition at line 30 of file RegisterPressure.h.

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Member Function Documentation

void llvm::RegisterPressure::decrease	(	unsigned	Reg,
		const TargetRegisterInfo *	TRI,
		const MachineRegisterInfo *	MRI
	)

Decrease register pressure for each pressure set impacted by this register class. This is only useful to account for spilling or rematerialization.

Parameters:

Reg	is either a virtual register number or register unit number.

LLVM_DUMP_METHOD void RegisterPressure::dump

(

const TargetRegisterInfo *

TRI

)

const

Definition at line 59 of file RegisterPressure.cpp.

References llvm::dbgs(), llvm::dumpRegSetPressure(), LiveInRegs, LiveOutRegs, MaxSetPressure, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::RegPressureTracker::dump().

void llvm::RegisterPressure::increase	(	unsigned	Reg,
		const TargetRegisterInfo *	TRI,
		const MachineRegisterInfo *	MRI
	)

Increase register pressure for each pressure set impacted by this register class. Normally called by RegPressureTracker, but may be called manually to account for live through (global liveness).

Parameters:

Reg	is either a virtual register number or register unit number.

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Member Data Documentation

SmallVector<unsigned,8> llvm::RegisterPressure::LiveInRegs

List of live in virtual registers or physical register units.

Definition at line 35 of file RegisterPressure.h.

Referenced by llvm::RegPressureTracker::closeTop(), llvm::RegPressureTracker::discoverLiveIn(), dump(), llvm::ScheduleDAGMILive::initRegPressure(), llvm::IntervalPressure::openBottom(), llvm::RegionPressure::openBottom(), llvm::IntervalPressure::openTop(), llvm::RegionPressure::openTop(), llvm::IntervalPressure::reset(), and llvm::RegionPressure::reset().

SmallVector<unsigned,8> llvm::RegisterPressure::LiveOutRegs

Definition at line 36 of file RegisterPressure.h.

Referenced by llvm::RegPressureTracker::closeBottom(), llvm::ScheduleDAGMILive::computeCyclicCriticalPath(), llvm::RegPressureTracker::discoverLiveOut(), dump(), llvm::RegPressureTracker::initLiveThru(), llvm::ScheduleDAGMILive::initRegPressure(), llvm::IntervalPressure::reset(), and llvm::RegionPressure::reset().

std::vector<unsigned> llvm::RegisterPressure::MaxSetPressure

Map of max reg pressure indexed by pressure set ID, not class ID.

Definition at line 32 of file RegisterPressure.h.

Referenced by llvm::RegPressureTracker::discoverLiveIn(), llvm::RegPressureTracker::discoverLiveOut(), dump(), llvm::RegPressureTracker::getDownwardPressure(), llvm::RegPressureTracker::getMaxDownwardPressureDelta(), llvm::RegPressureTracker::getMaxUpwardPressureDelta(), llvm::RegPressureTracker::getUpwardPressure(), llvm::RegPressureTracker::getUpwardPressureDelta(), llvm::RegPressureTracker::increaseRegPressure(), llvm::RegPressureTracker::init(), llvm::ScheduleDAGMILive::initRegPressure(), llvm::ConvergingVLIWScheduler::pickNodeFromQueue(), llvm::IntervalPressure::reset(), llvm::RegionPressure::reset(), llvm::RegPressureTracker::reset(), and llvm::ScheduleDAGMILive::scheduleMI().

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

• RegisterPressure.h
• RegisterPressure.cpp