llvm::VLIWResourceModel Class Reference

#include "Target/Hexagon/HexagonMachineScheduler.h"

Public Member Functions
	VLIWResourceModel (const TargetSubtargetInfo &STI, const TargetSchedModel *SM)
	~VLIWResourceModel ()
void	resetPacketState ()
void	resetDFA ()
void	reset ()
bool	isResourceAvailable (SUnit *SU, bool IsTop)
	Check if scheduling of this SU is possible in the current packet. More...
bool	reserveResources (SUnit *SU, bool IsTop)
	Keep track of available resources. More...
unsigned	getTotalPackets () const
bool	isInPacket (SUnit *SU) const

Detailed Description

Definition at line 36 of file HexagonMachineScheduler.h.

Constructor & Destructor Documentation

VLIWResourceModel()

llvm::VLIWResourceModel::VLIWResourceModel ( const TargetSubtargetInfo &  STI, const TargetSchedModel *  SM  )

inline

Definition at line 52 of file HexagonMachineScheduler.h.

References assert(), llvm::DFAPacketizer::clearResources(), llvm::TargetInstrInfo::CreateTargetScheduleState(), llvm::TargetSubtargetInfo::getInstrInfo(), and llvm::TargetSchedModel::getIssueWidth().

Referenced by llvm::ConvergingVLIWScheduler::initialize().

~VLIWResourceModel()

llvm::VLIWResourceModel::~VLIWResourceModel ( )

inline

Definition at line 65 of file HexagonMachineScheduler.h.

Member Function Documentation

getTotalPackets()

unsigned llvm::VLIWResourceModel::getTotalPackets ( ) const

inline

Definition at line 84 of file HexagonMachineScheduler.h.

isInPacket()

bool llvm::VLIWResourceModel::isInPacket ( SUnit *  SU ) const

inline

Definition at line 85 of file HexagonMachineScheduler.h.

References llvm::is_contained().

isResourceAvailable()

bool VLIWResourceModel::isResourceAvailable	(	SUnit *	SU,
		bool	IsTop
	)

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

It is not precise (statefull), it is more like another heuristic. Many corner cases are figured empirically.

Definition at line 98 of file HexagonMachineScheduler.cpp.

References llvm::DFAPacketizer::canReserveResources(), llvm::SUnit::getInstr(), llvm::HexagonSubtarget::getInstrInfo(), llvm::MachineInstr::getOpcode(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineFunction::getSubtarget(), hasDependence(), and llvm::ISD::INLINEASM.

Referenced by reserveResources(), and reset().

reserveResources()

bool VLIWResourceModel::reserveResources	(	SUnit *	SU,
		bool	IsTop
	)

Keep track of available resources.

Definition at line 138 of file HexagonMachineScheduler.cpp.

References llvm::DFAPacketizer::clearResources(), llvm::dbgs(), llvm::dump(), llvm::ISD::EH_LABEL, llvm::SUnit::getInstr(), llvm::TargetSchedModel::getIssueWidth(), llvm::MachineInstr::getOpcode(), llvm::ISD::INLINEASM, isResourceAvailable(), llvm::AMDGPUISD::KILL, LLVM_DEBUG, and llvm::DFAPacketizer::reserveResources().

Referenced by reset().

reset()

void llvm::VLIWResourceModel::reset ( )

inline

Definition at line 77 of file HexagonMachineScheduler.h.

References llvm::DFAPacketizer::clearResources(), isResourceAvailable(), and reserveResources().

resetDFA()

void llvm::VLIWResourceModel::resetDFA ( )

inline

Definition at line 73 of file HexagonMachineScheduler.h.

References llvm::DFAPacketizer::clearResources().

resetPacketState()

void llvm::VLIWResourceModel::resetPacketState ( )

inline

Definition at line 69 of file HexagonMachineScheduler.h.

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

• lib/Target/Hexagon/HexagonMachineScheduler.h
• lib/Target/Hexagon/HexagonMachineScheduler.cpp