llvm::PressureDiff Class Reference

List of PressureChanges in order of increasing, unique PSetID. More...

#include "llvm/CodeGen/RegisterPressure.h"

Public Types
using	const_iterator = const PressureChange *

Public Member Functions
const_iterator	begin () const
const_iterator	end () const
void	addPressureChange (Register RegUnit, bool IsDec, const MachineRegisterInfo *MRI)
	Add a change in pressure to the pressure diff of a given instruction.
void	dump (const TargetRegisterInfo &TRI) const

Detailed Description

List of PressureChanges in order of increasing, unique PSetID.

Use a small fixed number, because we can fit more PressureChanges in an empty SmallVector than ever need to be tracked per register class. If more PSets are affected, then we only track the most constrained.

Definition at line 140 of file RegisterPressure.h.

Member Typedef Documentation

const_iterator

using llvm::PressureDiff::const_iterator = const PressureChange *

Definition at line 154 of file RegisterPressure.h.

Member Function Documentation

addPressureChange()

void PressureDiff::addPressureChange	(	Register	RegUnit,
		bool	IsDec,
		const MachineRegisterInfo *	MRI
	)

Add a change in pressure to the pressure diff of a given instruction.

Definition at line 663 of file RegisterPressure.cpp.

References E, llvm::PSetIterator::getWeight(), I, llvm::PSetIterator::isValid(), llvm::PressureChange::isValid(), MRI, and std::swap().

Referenced by llvm::PressureDiffs::addInstruction(), and llvm::ScheduleDAGMILive::updatePressureDiffs().

begin()

const_iterator llvm::PressureDiff::begin ( ) const

inline

Definition at line 156 of file RegisterPressure.h.

Referenced by llvm::PressureDiffs::addInstruction(), and llvm::RegPressureTracker::getUpwardPressureDelta().

dump()

LLVM_DUMP_METHOD void PressureDiff::dump

(

const TargetRegisterInfo &

TRI

)

const

Definition at line 126 of file RegisterPressure.cpp.

References llvm::dbgs(), llvm::PressureChange::getPSet(), llvm::PressureChange::getUnitInc(), llvm::PressureChange::isValid(), and TRI.

Referenced by llvm::ScheduleDAGMILive::dump(), llvm::RegPressureTracker::getMaxUpwardPressureDelta(), and llvm::ScheduleDAGMILive::updatePressureDiffs().

end()

const_iterator llvm::PressureDiff::end ( ) const

inline

Definition at line 157 of file RegisterPressure.h.

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

---

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

• include/llvm/CodeGen/RegisterPressure.h
• lib/CodeGen/RegisterPressure.cpp