LLVM  6.0.0svn
Public Member Functions | Public Attributes | List of all members
llvm::DomainValue Struct Reference

A DomainValue is a bit like LiveIntervals' ValNo, but it also keeps track of execution domains. More...

#include "llvm/CodeGen/ExecutionDepsFix.h"

Collaboration diagram for llvm::DomainValue:
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Public Member Functions

 DomainValue ()
bool isCollapsed () const
bool hasDomain (unsigned domain) const
void addDomain (unsigned domain)
void setSingleDomain (unsigned domain)
unsigned getCommonDomains (unsigned mask) const
unsigned getFirstDomain () const
void clear ()

Public Attributes

unsigned Refs = 0
unsigned AvailableDomains
SmallVector< MachineInstr *, 8 > Instrs

Detailed Description

A DomainValue is a bit like LiveIntervals' ValNo, but it also keeps track of execution domains.

An open DomainValue represents a set of instructions that can still switch execution domain. Multiple registers may refer to the same open DomainValue - they will eventually be collapsed to the same execution domain.

A collapsed DomainValue represents a single register that has been forced into one of more execution domains. There is a separate collapsed DomainValue for each register, but it may contain multiple execution domains. A register value is initially created in a single execution domain, but if we were forced to pay the penalty of a domain crossing, we keep track of the fact that the register is now available in multiple domains.

Definition at line 62 of file ExecutionDepsFix.h.

Constructor & Destructor Documentation

◆ DomainValue()

llvm::DomainValue::DomainValue ( )

Definition at line 79 of file ExecutionDepsFix.h.

References clear().

Member Function Documentation

◆ addDomain()

void llvm::DomainValue::addDomain ( unsigned  domain)

Definition at line 94 of file ExecutionDepsFix.h.

◆ clear()

void llvm::DomainValue::clear ( )

Definition at line 114 of file ExecutionDepsFix.h.

References llvm::SmallVectorImpl< T >::clear().

Referenced by DomainValue().

◆ getCommonDomains()

unsigned llvm::DomainValue::getCommonDomains ( unsigned  mask) const

Definition at line 104 of file ExecutionDepsFix.h.

◆ getFirstDomain()

unsigned llvm::DomainValue::getFirstDomain ( ) const

Definition at line 109 of file ExecutionDepsFix.h.

References llvm::countTrailingZeros().

◆ hasDomain()

bool llvm::DomainValue::hasDomain ( unsigned  domain) const

Definition at line 86 of file ExecutionDepsFix.h.

References assert().

◆ isCollapsed()

bool llvm::DomainValue::isCollapsed ( ) const

Definition at line 83 of file ExecutionDepsFix.h.

References llvm::SmallVectorBase::empty().

◆ setSingleDomain()

void llvm::DomainValue::setSingleDomain ( unsigned  domain)

Definition at line 99 of file ExecutionDepsFix.h.

Member Data Documentation

◆ AvailableDomains

unsigned llvm::DomainValue::AvailableDomains

Definition at line 69 of file ExecutionDepsFix.h.

◆ Instrs

SmallVector<MachineInstr*, 8> llvm::DomainValue::Instrs

Definition at line 77 of file ExecutionDepsFix.h.

◆ Next

DomainValue* llvm::DomainValue::Next

Definition at line 74 of file ExecutionDepsFix.h.

◆ Refs

unsigned llvm::DomainValue::Refs = 0

Definition at line 64 of file ExecutionDepsFix.h.

Referenced by llvm::ExecutionDepsFix::getRequiredProperties().

The documentation for this struct was generated from the following file: