class ReadState

Declaration

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

Description

Tracks register operand latency in cycles. A read may be dependent on more than one write. This occurs when some writes only partially update the register associated to this read.

Declared at: llvm/include/llvm/MCA/Instruction.h:227

Method Overview

• public ReadState(const llvm::mca::ReadDescriptor & Desc, llvm::MCPhysReg RegID)
• public void cycleEvent()
• public const llvm::mca::CriticalDependency & getCriticalRegDep() const
• public const llvm::mca::ReadDescriptor & getDescriptor() const
• public unsigned int getRegisterFileID() const
• public llvm::MCPhysReg getRegisterID() const
• public unsigned int getSchedClass() const
• public bool isImplicitRead() const
• public bool isIndependentFromDef() const
• public bool isPending() const
• public bool isReadZero() const
• public bool isReady() const
• public void setDependentWrites(unsigned int Writes)
• public void setIndependentFromDef()
• public void setPRF(unsigned int ID)
• public void setReadZero()
• public void writeStartEvent(unsigned int IID, llvm::MCPhysReg RegID, unsigned int Cycles)

Methods

¶ReadState(const llvm::mca::ReadDescriptor& Desc,
          llvm::MCPhysReg RegID)

Declared at: llvm/include/llvm/MCA/Instruction.h:257

Parameters

const llvm::mca::ReadDescriptor& Desc

llvm::MCPhysReg RegID

¶void cycleEvent()

Declared at: llvm/include/llvm/MCA/Instruction.h:275

¶const llvm::mca::CriticalDependency&
getCriticalRegDep() const

Declared at: llvm/include/llvm/MCA/Instruction.h:266

¶const llvm::mca::ReadDescriptor& getDescriptor()
    const

Declared at: llvm/include/llvm/MCA/Instruction.h:262

¶unsigned int getRegisterFileID() const

Declared at: llvm/include/llvm/MCA/Instruction.h:265

¶llvm::MCPhysReg getRegisterID() const

Declared at: llvm/include/llvm/MCA/Instruction.h:264

¶unsigned int getSchedClass() const

Declared at: llvm/include/llvm/MCA/Instruction.h:263

¶bool isImplicitRead() const

Declared at: llvm/include/llvm/MCA/Instruction.h:270

¶bool isIndependentFromDef() const

Declared at: llvm/include/llvm/MCA/Instruction.h:272

¶bool isPending() const

Declared at: llvm/include/llvm/MCA/Instruction.h:268

¶bool isReadZero() const

Declared at: llvm/include/llvm/MCA/Instruction.h:282

¶bool isReady() const

Declared at: llvm/include/llvm/MCA/Instruction.h:269

¶void setDependentWrites(unsigned int Writes)

Declared at: llvm/include/llvm/MCA/Instruction.h:277

Parameters

unsigned int Writes

¶void setIndependentFromDef()

Declared at: llvm/include/llvm/MCA/Instruction.h:273

¶void setPRF(unsigned int ID)

Declared at: llvm/include/llvm/MCA/Instruction.h:284

Parameters

unsigned int ID

¶void setReadZero()

Declared at: llvm/include/llvm/MCA/Instruction.h:283

¶void writeStartEvent(unsigned int IID,
                     llvm::MCPhysReg RegID,
                     unsigned int Cycles)

Declared at: llvm/include/llvm/MCA/Instruction.h:276

Parameters

unsigned int IID

llvm::MCPhysReg RegID

unsigned int Cycles