#include <ResourcePriorityQueue.h>

Inheritance diagram for llvm::ResourcePriorityQueue:

Collaboration diagram for llvm::ResourcePriorityQueue:

Public Member Functions
	ResourcePriorityQueue (SelectionDAGISel *IS)
	~ResourcePriorityQueue ()
bool	isBottomUp () const override
void	initNodes (std::vector< SUnit > &sunits) override
void	addNode (const SUnit *SU) override
void	updateNode (const SUnit *SU) override
void	releaseState () override
unsigned	getLatency (unsigned NodeNum) const
unsigned	getNumSolelyBlockNodes (unsigned NodeNum) const
signed	SUSchedulingCost (SUnit *SU)
void	initNumRegDefsLeft (SUnit *SU)
void	updateNumRegDefsLeft (SUnit *SU)
signed	regPressureDelta (SUnit *SU, bool RawPressure=false)
signed	rawRegPressureDelta (SUnit *SU, unsigned RCId)
bool	empty () const override
void	push (SUnit *U) override
SUnit *	pop () override
void	remove (SUnit *SU) override
void	dump (ScheduleDAG *DAG) const override
void	scheduledNode (SUnit *Node) override
	scheduledNode - Main resource tracking point.
bool	isResourceAvailable (SUnit *SU)
void	reserveResources (SUnit *SU)
	Keep track of available resources.

Detailed Description

Definition at line 38 of file ResourcePriorityQueue.h.

Constructor & Destructor Documentation

ResourcePriorityQueue::ResourcePriorityQueue ( SelectionDAGISel * IS )

Definition at line 44 of file ResourcePriorityQueue.cpp.

References llvm::TargetInstrInfo::CreateTargetScheduleState(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::TargetRegisterInfo::getNumRegClasses(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetRegisterInfo::getRegPressureLimit(), llvm::TargetMachine::getSubtargetImpl(), llvm::SelectionDAGISel::getTargetLowering(), I, llvm::SelectionDAGISel::MF, llvm::TargetRegisterInfo::regclass_begin(), llvm::TargetRegisterInfo::regclass_end(), and llvm::SystemZISD::TM.

llvm::ResourcePriorityQueue::~ResourcePriorityQueue ( ) [inline]

Definition at line 80 of file ResourcePriorityQueue.h.

Member Function Documentation

void llvm::ResourcePriorityQueue::addNode ( const SUnit * SU ) [inline, override, virtual]

Implements llvm::SchedulingPriorityQueue.

Definition at line 88 of file ResourcePriorityQueue.h.

void ResourcePriorityQueue::dump ( ScheduleDAG * DAG ) const [override, virtual]

Reimplemented from llvm::SchedulingPriorityQueue.

Definition at line 648 of file ResourcePriorityQueue.cpp.

References llvm::dbgs(), llvm::SUnit::dump(), empty(), llvm::SUnit::getHeight(), and pop().

bool llvm::ResourcePriorityQueue::empty ( ) const [inline, override, virtual]

Implements llvm::SchedulingPriorityQueue.

Definition at line 119 of file ResourcePriorityQueue.h.

Referenced by dump(), and pop().

unsigned llvm::ResourcePriorityQueue::getLatency ( unsigned NodeNum ) const [inline]

Definition at line 98 of file ResourcePriorityQueue.h.

Referenced by llvm::resource_sort::operator()().

unsigned llvm::ResourcePriorityQueue::getNumSolelyBlockNodes ( unsigned NodeNum ) const [inline]

Definition at line 103 of file ResourcePriorityQueue.h.

Referenced by llvm::resource_sort::operator()().

void ResourcePriorityQueue::initNodes ( std::vector< SUnit > & sunits ) [override, virtual]

Initialize nodes.

Implements llvm::SchedulingPriorityQueue.

Definition at line 171 of file ResourcePriorityQueue.cpp.

References initNumRegDefsLeft(), and llvm::SUnit::NodeQueueId.

void ResourcePriorityQueue::initNumRegDefsLeft ( SUnit * SU )

InitNumRegDefsLeft - Determine the # of regs defined by this node.

Definition at line 550 of file ResourcePriorityQueue.cpp.

References llvm::ISD::CopyFromReg, llvm::MCInstrInfo::get(), llvm::SUnit::getNode(), llvm::MCInstrDesc::getNumDefs(), llvm::TargetOpcode::IMPLICIT_DEF, llvm::ISD::INLINEASM, N, and llvm::SUnit::NumRegDefsLeft.

Referenced by initNodes().

bool llvm::ResourcePriorityQueue::isBottomUp ( ) const [inline, override, virtual]

Implements llvm::SchedulingPriorityQueue.

Definition at line 84 of file ResourcePriorityQueue.h.

bool ResourcePriorityQueue::isResourceAvailable ( SUnit * SU )

Check if scheduling of this SU is possible in the current packet.

Definition at line 249 of file ResourcePriorityQueue.cpp.

References llvm::DFAPacketizer::canReserveResources(), llvm::TargetOpcode::EXTRACT_SUBREG, llvm::MCInstrInfo::get(), llvm::SDNode::getGluedNode(), llvm::SDNode::getMachineOpcode(), llvm::SUnit::getNode(), I, llvm::TargetOpcode::IMPLICIT_DEF, llvm::TargetOpcode::INSERT_SUBREG, llvm::SDNode::isMachineOpcode(), llvm::TargetOpcode::REG_SEQUENCE, and llvm::TargetOpcode::SUBREG_TO_REG.

Referenced by reserveResources(), and SUSchedulingCost().

SUnit * ResourcePriorityQueue::pop ( ) [override, virtual]

Main access point - returns next instructions to be placed in scheduling sequence.

Implements llvm::SchedulingPriorityQueue.

Definition at line 601 of file ResourcePriorityQueue.cpp.

References DisableDFASched, empty(), I, SUSchedulingCost(), and std::swap().

Referenced by dump().

void ResourcePriorityQueue::push ( SUnit * U ) [override, virtual]

Implements llvm::SchedulingPriorityQueue.

Definition at line 234 of file ResourcePriorityQueue.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), I, llvm::SUnit::NodeNum, and llvm::SUnit::Succs.

signed ResourcePriorityQueue::rawRegPressureDelta	(	SUnit *	SU,
		unsigned	RCId
	)

Definition at line 329 of file ResourcePriorityQueue.cpp.

References llvm::TargetRegisterClass::getID(), llvm::SDValue::getNode(), llvm::SUnit::getNode(), llvm::SDNode::getNumOperands(), llvm::SDNode::getNumValues(), llvm::SDNode::getOperand(), llvm::TargetLoweringBase::getRegClassFor(), llvm::SDValue::getResNo(), llvm::SDNode::getSimpleValueType(), llvm::SDNode::isMachineOpcode(), and llvm::TargetLoweringBase::isTypeLegal().

Referenced by regPressureDelta().

signed ResourcePriorityQueue::regPressureDelta	(	SUnit *	SU,
		bool	RawPressure = `false`
	)

Estimates change in reg pressure from this SU. It is achieved by trivial tracking of defined and used vregs in dependent instructions. The RawPressure flag makes this function to ignore existing reg file sizes, and report raw def/use balance.

Definition at line 363 of file ResourcePriorityQueue.cpp.

References llvm::TargetRegisterClass::getID(), llvm::SUnit::getNode(), I, llvm::SDNode::isMachineOpcode(), rawRegPressureDelta(), llvm::TargetRegisterInfo::regclass_begin(), and llvm::TargetRegisterInfo::regclass_end().

Referenced by SUSchedulingCost().

void llvm::ResourcePriorityQueue::releaseState ( ) [inline, override, virtual]

Implements llvm::SchedulingPriorityQueue.

Definition at line 94 of file ResourcePriorityQueue.h.

void ResourcePriorityQueue::remove ( SUnit * SU ) [override, virtual]

Implements llvm::SchedulingPriorityQueue.

Definition at line 635 of file ResourcePriorityQueue.cpp.

References I, and std::swap().

void ResourcePriorityQueue::reserveResources ( SUnit * SU )

Keep track of available resources.