TTAMachine::Guard Class Reference

#include <Guard.hh>

Inheritance diagram for TTAMachine::Guard:

Collaboration diagram for TTAMachine::Guard:

Public Member Functions
virtual	~Guard ()
virtual Bus *	parentBus () const
virtual void	setParentBus (Bus *parentBus)
virtual bool	isEqual (const Guard &guard) const =0
virtual bool	isInverted () const
virtual bool	isMoreRestrictive (const Guard &guard) const
virtual bool	isLessRestrictive (const Guard &guard) const
virtual bool	isOpposite (const Guard &guard) const =0
virtual bool	isDisjoint (const Guard &guard) const
virtual void	copyTo (Bus &parentBus) const =0
virtual ObjectState *	saveState () const
virtual void	loadState (const ObjectState *state)
Public Member Functions inherited from Serializable
virtual	~Serializable ()

Static Public Attributes
static const std::string	OSNAME_GUARD = "guard"
	ObjectState name for guard. More...
static const std::string	OSKEY_INVERTED = "inverted"
	ObjectState attribute key for inverted feature. More...

Protected Member Functions
	Guard (bool inverted, Bus *parentBus)
	Guard (const ObjectState *state, Bus &parentBus)
Protected Member Functions inherited from TTAMachine::SubComponent
	SubComponent ()
virtual	~SubComponent ()
Protected Member Functions inherited from TTAMachine::MachinePart
	MachinePart ()
virtual	~MachinePart ()

Private Attributes
bool	inverted_
	Indicated whether the condition term is inverted. More...
Bus *	parent_
	The parent bus of the guard. More...

Detailed Description

Guard expression representing an execution predicate.

Evaluates to true (execute) or false (don't execute). This is a base class for real Guards.

Definition at line 55 of file Guard.hh.

Constructor & Destructor Documentation

~Guard()

TTAMachine::Guard::~Guard ( )

virtual

Destructor.

Definition at line 90 of file Guard.cc.

              {
    Bus* parent = parent_;
    parent_ = NULL;
    if (parent) {
        parent->removeGuard(*this);
    }
}

References parent_, and TTAMachine::Bus::removeGuard().

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Guard() [1/2]

TTAMachine::Guard::Guard ( bool  inverted, Bus *  parentBus  )

protected

Constructor.

Parameters

inverted	Indicates whether the condition term is inverted.
parentBus	Parent bus component of the guard.

Definition at line 64 of file Guard.cc.

                                          :
    inverted_(inverted), parent_(parentBus) {
 
    // parentBus.addGuard() cannot be called here because isEqual method
    // does not work until the whole
    // (RegisterGuard/PortGuard/UnconditionalGuard) is instantiated
}

Guard() [2/2]

TTAMachine::Guard::Guard ( const ObjectState *  state, Bus &  parentBus  )

protected

Constructor.

Loads its state from the given ObjectState instance.

Parameters

state	The ObjectState instance from which the state is loaded.
parentBus	Parent bus of the guard.

Exceptions

ObjectStateLoadingException

If the given ObjectState instance is invalid.

Definition at line 83 of file Guard.cc.

                                                     : parent_(&parentBus) {
    loadState(state);
}

References loadState().

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Member Function Documentation

copyTo()

virtual void TTAMachine::Guard::copyTo ( Bus &  parentBus ) const

pure virtual

Implemented in TTAMachine::UnconditionalGuard, TTAMachine::RegisterGuard, and TTAMachine::PortGuard.

Referenced by TTAMachine::Bus::copyGuardsTo(), and PasteComponentCmd::Do().

isDisjoint()

bool TTAMachine::Guard::isDisjoint ( const Guard &  guard ) const

virtual

Checks whether this guard and given one are disjoint.

The guards are disjoint if neither is the exact subset of the other.

Parameters

guard

The guard to compare.

Returns

True if the guards are disjoint, otherwise false.

Definition at line 138 of file Guard.cc.

                                          {
    return !isEqual(guard);
}

References isEqual().

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isEqual()

virtual bool TTAMachine::Guard::isEqual ( const Guard &  guard ) const

pure virtual

Implemented in TTAMachine::UnconditionalGuard, TTAMachine::RegisterGuard, and TTAMachine::PortGuard.

Referenced by BusBroker::allAvailableResources(), BusBroker::assign(), BusBroker::canTransportImmediate(), DataDependenceGraph::guardsAllowBypass(), BusBroker::hasGuard(), TTAMachine::Bus::isArchitectureEqual(), BusBroker::isAvailable(), isDisjoint(), DataDependenceGraph::isNotAvoidable(), and PostpassOperandSharer::tryRemoveOperandWrite().

isInverted()

virtual bool TTAMachine::Guard::isInverted ( ) const

virtual

Referenced by CodeCompressorPlugin::addBitsForGuardField(), BEMGenerator::addEncodings(), BEMValidator::checkGuardField(), TTAMachine::PortGuard::copyTo(), TTAMachine::RegisterGuard::copyTo(), TTAMachine::UnconditionalGuard::copyTo(), TTAProgram::CodeGenerator::createBreakOperation(), TTAProgram::ProgramWriter::createCodeSection(), llvm::LLVMTCEBuilder::createGuard(), TTAProgram::CodeGenerator::createInverseGuard(), ProgramDependenceGraph::createJump(), findBooleanGuard(), TTAProgram::TPEFProgramFactory::findGuard(), DefaultDecoderGenerator::findGuard(), RegisterRenamer::findGuardRegisters(), CompiledSimCodeGenerator::generateGuardCondition(), MachineConnectivityCheck::hasBothGuards(), TTAMachine::PortGuard::isEqual(), TTAMachine::RegisterGuard::isEqual(), TTAMachine::UnconditionalGuard::isEqual(), TTAProgram::MoveGuard::isInverted(), TTAMachine::PortGuard::isOpposite(), TTAMachine::RegisterGuard::isOpposite(), ListCompareFunction(), RFGuardDialog::onOK(), BusDialog::onUnconditionalGuard(), BFLateBypassGuard::operator()(), BFEarlyGuardBypass::operator()(), SimProgramBuilder::processMove(), MachineResourceManager::registerFileIndexReference(), RegisterRenamer::renameLiveRange(), MachineResourceManager::rFPortOrFUIndexReference(), BFRenameLiveRange::setGuard(), SimpleIfConverter::successors(), MachineInfo::supportsPortGuardedJump(), BusDialog::updateGuardLists(), and DefaultDecoderGenerator::writeSquashSignalSubstitution().

isLessRestrictive()

bool TTAMachine::Guard::isLessRestrictive ( const Guard &  guard ) const

virtual

Checks whether this guard is less restrictive than the given one.

This method is meant for complex (two-term) guards but they are not supported yet, so returns always false.

Parameters

guard

The guard to compare.

Returns

False.

Definition at line 124 of file Guard.cc.

                                             {
    return false;
}

isMoreRestrictive()

bool TTAMachine::Guard::isMoreRestrictive ( const Guard &  guard ) const

virtual

Checks whether this guard is more restrictive than the given one.

This method is meant for complex (two-term) guards but they are not supported yet, so returns always false.

Parameters

guard

The guard to compare.

Returns

False.

Definition at line 109 of file Guard.cc.

                                             {
    return false;
}

isOpposite()

virtual bool TTAMachine::Guard::isOpposite ( const Guard &  guard ) const

pure virtual

Implemented in TTAMachine::RegisterGuard, TTAMachine::PortGuard, and TTAMachine::UnconditionalGuard.

Referenced by InputPSocketResource::canAssign(), PSocketResource::canAssign(), OutputPSocketResource::canAssign(), ExecutionPipelineResource::exclusiveMoves(), DataDependenceGraph::isNotAvoidable(), and PostpassOperandSharer::tryRemoveOperandWrite().

loadState()

void TTAMachine::Guard::loadState ( const ObjectState *  state )

virtual

Loads its state from the given ObjectState instance.

Parameters

state

The ObjectState instance.

Exceptions

ObjectStateLoadingException

If the given ObjectState is invalid.

Implements Serializable.

Reimplemented in TTAMachine::UnconditionalGuard, TTAMachine::RegisterGuard, and TTAMachine::PortGuard.

Definition at line 164 of file Guard.cc.

                                         {
    try {
        inverted_ = state->intAttribute(OSKEY_INVERTED);
    } catch (Exception& e) {
        string procName = "Guard::loadState";
        throw ObjectStateLoadingException(
            __FILE__, __LINE__, procName,
            e.errorMessage());
    }
}

References Exception::errorMessage(), ObjectState::intAttribute(), inverted_, and OSKEY_INVERTED.

Referenced by Guard(), TTAMachine::PortGuard::loadState(), TTAMachine::RegisterGuard::loadState(), and TTAMachine::UnconditionalGuard::loadState().

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parentBus()

virtual Bus* TTAMachine::Guard::parentBus ( ) const

virtual

Referenced by SimpleIfConverter::canConvert(), ProgrammabilityValidator::checkBooleanRegister(), TTAMachine::PortGuard::copyTo(), TTAMachine::RegisterGuard::copyTo(), TTAMachine::UnconditionalGuard::copyTo(), TTAProgram::CodeGenerator::createInverseGuard(), RegisterRenamer::findGuardRegisters(), ProgrammabilityValidator::findRegisterGuard(), TTAProgram::Move::guardLatency(), TTAMachine::PortGuard::loadState(), TTAMachine::RegisterGuard::loadState(), BFScheduleExact::operator()(), TTAMachine::PortGuard::PortGuard(), TTAMachine::RegisterGuard::RegisterGuard(), TTAMachine::Bus::removeGuard(), RegisterRenamer::renameLiveRange(), BFRenameLiveRange::setGuard(), setParentBus(), and TTAMachine::UnconditionalGuard::UnconditionalGuard().

saveState()

ObjectState * TTAMachine::Guard::saveState ( ) const

virtual

Saves the state of the object to an ObjectState object.

Returns

The newly created ObjectState object.

Implements Serializable.

Reimplemented in TTAMachine::UnconditionalGuard, TTAMachine::RegisterGuard, and TTAMachine::PortGuard.

Definition at line 149 of file Guard.cc.

                       {
    ObjectState* state = new ObjectState(OSNAME_GUARD);
    state->setAttribute(OSKEY_INVERTED, inverted_);
    return state;
}

References inverted_, OSKEY_INVERTED, OSNAME_GUARD, and ObjectState::setAttribute().

Referenced by TTAMachine::Bus::saveState(), TTAMachine::PortGuard::saveState(), TTAMachine::RegisterGuard::saveState(), and TTAMachine::UnconditionalGuard::saveState().

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setParentBus()

virtual void TTAMachine::Guard::setParentBus ( Bus *  parentBus )

inlinevirtual

Definition at line 60 of file Guard.hh.

                                              {
        parent_ = parentBus;
    }

References parent_, and parentBus().

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Member Data Documentation

inverted_

bool TTAMachine::Guard::inverted_

private

Indicated whether the condition term is inverted.

Definition at line 85 of file Guard.hh.

Referenced by loadState(), and saveState().

OSKEY_INVERTED

const string TTAMachine::Guard::OSKEY_INVERTED = "inverted"

static

ObjectState attribute key for inverted feature.

Definition at line 77 of file Guard.hh.

Referenced by loadState(), and saveState().

OSNAME_GUARD

const string TTAMachine::Guard::OSNAME_GUARD = "guard"

static

ObjectState name for guard.

Definition at line 75 of file Guard.hh.

Referenced by saveState().

parent_

Bus* TTAMachine::Guard::parent_

private

The parent bus of the guard.

Definition at line 87 of file Guard.hh.

Referenced by setParentBus(), and ~Guard().

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

• Guard.hh
• Guard.cc