class VLIWResourceModel

Declaration

class VLIWResourceModel { /* full declaration omitted */ };

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:31

Member Variables

protected const llvm::TargetInstrInfo* TII

protected llvm::DFAPacketizer* ResourcesModel

ResourcesModel - Represents VLIW state. Not limited to VLIW targets per se, but assumes definition of resource model by a target.

protected const llvm::TargetSchedModel* SchedModel

protected SmallVector<llvm::SUnit*> Packet

Local packet/bundle model. Purely internal to the MI scheduler at the time.

protected unsigned int TotalPackets = 0

Total packets created.

Method Overview

• public VLIWResourceModel(const llvm::TargetSubtargetInfo & STI, const llvm::TargetSchedModel * SM)
• protected virtual llvm::DFAPacketizer * createPacketizer(const llvm::TargetSubtargetInfo & STI) const
• public size_t getPacketInstCount() const
• public unsigned int getTotalPackets() const
• public virtual bool hasDependence(const llvm::SUnit * SUd, const llvm::SUnit * SUu)
• public bool isInPacket(llvm::SUnit * SU) const
• public virtual bool isResourceAvailable(llvm::SUnit * SU, bool IsTop)
• public virtual bool reserveResources(llvm::SUnit * SU, bool IsTop)
• public virtual void reset()
• public virtual ~VLIWResourceModel()

Methods

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

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:50

Parameters

const llvm::TargetSubtargetInfo& STI

const llvm::TargetSchedModel* SM

¶virtual llvm::DFAPacketizer* createPacketizer(
    const llvm::TargetSubtargetInfo& STI) const

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:64

Parameters

const llvm::TargetSubtargetInfo& STI

¶size_t getPacketInstCount() const

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:60

¶unsigned int getTotalPackets() const

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:59

¶virtual bool hasDependence(const llvm::SUnit* SUd,
                           const llvm::SUnit* SUu)

Description

Return true if there is a dependence between SUd and SUu.

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:56

Parameters

const llvm::SUnit* SUd

const llvm::SUnit* SUu

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

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:61

Parameters

llvm::SUnit* SU

¶virtual bool isResourceAvailable(llvm::SUnit* SU,
                                 bool IsTop)

Description

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.

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:57

Parameters

llvm::SUnit* SU

bool IsTop

¶virtual bool reserveResources(llvm::SUnit* SU,
                              bool IsTop)

Description

Keep track of available resources.

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:58

Parameters

llvm::SUnit* SU

bool IsTop

¶virtual void reset()

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:54

¶virtual ~VLIWResourceModel()

Declared at: llvm/include/llvm/CodeGen/VLIWMachineScheduler.h:52