A DependencyGraph Node that points to an Instruction and contains memory dependency edges. More...

#include "llvm/Transforms/Vectorize/SandboxVectorizer/DependencyGraph.h"

Inheritance diagram for llvm::sandboxir::DGNode:

Public Types
using	iterator = PredIterator
using	succ_iterator = SuccIterator

Public Member Functions
	DGNode (Instruction *I)
	DGNode (const DGNode &Other)=delete
virtual	~DGNode ()
unsigned	getNumUnscheduledDeps () const
	\Returns the number of unscheduled successors.
bool	validUnscheduledDeps () const
void	decrUnscheduledDeps ()
void	incrUnscheduledDeps ()
void	resetScheduleState ()
bool	ready () const
	\Returns true if all dependent successors (or predecessors during top-down scheduling) have been scheduled.
bool	scheduled () const
	\Returns true if this node has been scheduled.
void	setScheduled ()
SchedBundle *	getSchedBundle () const
	\Returns the scheduling bundle that this node belongs to, or nullptr.
bool	comesBefore (const DGNode *Other)
	\Returns true if this is before `Other` in program order.
virtual iterator	preds_begin (DependencyGraph &DAG)
virtual iterator	preds_end (DependencyGraph &DAG)
iterator	preds_begin (DependencyGraph &DAG) const
iterator	preds_end (DependencyGraph &DAG) const
iterator_range< iterator >	preds (DependencyGraph &DAG) const
	\Returns a range of DAG predecessors nodes.
virtual succ_iterator	succs_begin (DependencyGraph &DAG)
virtual succ_iterator	succs_end (DependencyGraph &DAG)
succ_iterator	succs_begin (DependencyGraph &DAG) const
succ_iterator	succs_end (DependencyGraph &DAG) const
iterator_range< succ_iterator >	succs (DependencyGraph &DAG) const
	\Returns a range of DAG successor nodes.
Instruction *	getInstruction () const
virtual void	print (raw_ostream &OS, bool PrintDeps=true) const
LLVM_DUMP_METHOD void	dump () const

Static Public Member Functions
static bool	isStackSaveOrRestoreIntrinsic (Instruction *I)
static bool	isMemIntrinsic (IntrinsicInst *I)
	\Returns true if intrinsic `I` touches memory.
static bool	isMemDepCandidate (Instruction *I)
	We consider `I` as a Memory Dependency Candidate instruction if it reads/write memory or if it has side-effects.
static bool	isFenceLike (Instruction *I)
	\Returns true if `I` is fence like. It excludes non-mem intrinsics.
static bool	isMemDepNodeCandidate (Instruction *I)
	\Returns true if `I` is a memory dependency candidate instruction.

Protected Member Functions
void	setSchedBundle (SchedBundle &SB)
void	clearSchedBundle ()
	DGNode (Instruction *I, DGNodeID ID)

Protected Attributes
Instruction *	I
DGNodeID	SubclassID
	For isa/dyn_cast etc.
std::optional< unsigned >	UnscheduledDeps = 0
	The number of unscheduled successors (predecessors) depending on the scheduling direction.
bool	Scheduled = false
	This is true if this node has been scheduled.
SchedBundle *	SB = nullptr
	The scheduler bundle that this node belongs to.

Friends
class	SchedBundle
class	MemDGNode
class	DependencyGraph
raw_ostream &	operator<< (raw_ostream &OS, DGNode &N)

Detailed Description

A DependencyGraph Node that points to an Instruction and contains memory dependency edges.

Definition at line 147 of file DependencyGraph.h.

Member Typedef Documentation

◆ iterator

using llvm::sandboxir::DGNode::iterator = PredIterator

Definition at line 211 of file DependencyGraph.h.

◆ succ_iterator

using llvm::sandboxir::DGNode::succ_iterator = SuccIterator

Definition at line 234 of file DependencyGraph.h.

Constructor & Destructor Documentation

◆ DGNode() [1/3]

llvm::sandboxir::DGNode::DGNode	(	Instruction *	I,
		DGNodeID	ID )

inlineprotected

Definition at line 166 of file DependencyGraph.h.

References I, and SubclassID.

Referenced by llvm::sandboxir::MemDGNode::classof(), comesBefore(), DGNode(), DGNode(), llvm::sandboxir::MemDGNode::hasMemPred(), llvm::sandboxir::MemDGNode::MemDGNode(), operator<<, preds_begin(), preds_end(), succs_begin(), and succs_end().

◆ DGNode() [2/3]

llvm::sandboxir::DGNode::DGNode ( Instruction * I )

inline

Definition at line 171 of file DependencyGraph.h.

References assert(), DGNode(), I, isMemDepNodeCandidate(), and SubclassID.

◆ DGNode() [3/3]

llvm::sandboxir::DGNode::DGNode ( const DGNode & Other )

delete

References DGNode(), and llvm::Other.

◆ ~DGNode()

llvm::sandboxir::DGNode::~DGNode ( )

virtual

Definition at line 148 of file DependencyGraph.cpp.

References SB.

Member Function Documentation

◆ clearSchedBundle()

void llvm::sandboxir::DGNode::clearSchedBundle ( )

inlineprotected

Definition at line 163 of file DependencyGraph.h.

◆ comesBefore()

bool llvm::sandboxir::DGNode::comesBefore ( const DGNode * Other )

inline

\Returns true if this is before Other in program order.

Definition at line 210 of file DependencyGraph.h.

References DGNode(), I, and llvm::Other.

◆ decrUnscheduledDeps()

void llvm::sandboxir::DGNode::decrUnscheduledDeps ( )

inline

Definition at line 187 of file DependencyGraph.h.

References assert(), and UnscheduledDeps.

Referenced by llvm::sandboxir::MemDGNode::removeMemPred().

◆ dump()

void llvm::sandboxir::DGNode::dump ( ) const

Definition at line 163 of file DependencyGraph.cpp.

References llvm::dbgs(), and print().

◆ getInstruction()

Instruction * llvm::sandboxir::DGNode::getInstruction ( ) const

inline

Definition at line 297 of file DependencyGraph.h.

References I.

Referenced by llvm::sandboxir::SchedBundle::getBot(), llvm::sandboxir::SchedBundle::getTop(), llvm::sandboxir::PriorityCmp::operator()(), and llvm::sandboxir::DependencyGraph::print().

◆ getNumUnscheduledDeps()

unsigned llvm::sandboxir::DGNode::getNumUnscheduledDeps ( ) const

inline

\Returns the number of unscheduled successors.

Definition at line 177 of file DependencyGraph.h.

References assert(), and UnscheduledDeps.

◆ getSchedBundle()

SchedBundle * llvm::sandboxir::DGNode::getSchedBundle ( ) const

inline

\Returns the scheduling bundle that this node belongs to, or nullptr.

Definition at line 208 of file DependencyGraph.h.

References SB, and SchedBundle.

◆ incrUnscheduledDeps()

void llvm::sandboxir::DGNode::incrUnscheduledDeps ( )

inline

Definition at line 191 of file DependencyGraph.h.

References UnscheduledDeps.

Referenced by llvm::sandboxir::MemDGNode::addMemPred().

◆ isFenceLike()

bool llvm::sandboxir::DGNode::isFenceLike ( Instruction * I )

inlinestatic

\Returns true if I is fence like. It excludes non-mem intrinsics.

Definition at line 282 of file DependencyGraph.h.

References llvm::dyn_cast(), I, II, and isMemIntrinsic().

Referenced by isMemDepNodeCandidate(), and llvm::sandboxir::isOrdered().

◆ isMemDepCandidate()

bool llvm::sandboxir::DGNode::isMemDepCandidate ( Instruction * I )

inlinestatic

We consider I as a Memory Dependency Candidate instruction if it reads/write memory or if it has side-effects.

This is used by the dependency graph.

Definition at line 275 of file DependencyGraph.h.

References llvm::dyn_cast(), I, II, and isMemIntrinsic().

Referenced by isMemDepNodeCandidate(), and llvm::sandboxir::isOrdered().

◆ isMemDepNodeCandidate()

bool llvm::sandboxir::DGNode::isMemDepNodeCandidate ( Instruction * I )

inlinestatic

\Returns true if I is a memory dependency candidate instruction.

Definition at line 289 of file DependencyGraph.h.

References llvm::dyn_cast(), I, isFenceLike(), isMemDepCandidate(), isStackSaveOrRestoreIntrinsic(), and llvm::sandboxir::AllocaInst::isUsedWithInAlloca().

Referenced by DGNode(), llvm::sandboxir::MemDGNodeIntervalBuilder::getBotMemDGNode(), llvm::sandboxir::DependencyGraph::getOrCreateNode(), llvm::sandboxir::MemDGNodeIntervalBuilder::getTopMemDGNode(), and llvm::sandboxir::MemDGNode::MemDGNode().

◆ isMemIntrinsic()

bool llvm::sandboxir::DGNode::isMemIntrinsic ( IntrinsicInst * I )

inlinestatic

\Returns true if intrinsic I touches memory.

This is used by the dependency graph.

Definition at line 267 of file DependencyGraph.h.

References I.

Referenced by isFenceLike(), and isMemDepCandidate().

◆ isStackSaveOrRestoreIntrinsic()

bool llvm::sandboxir::DGNode::isStackSaveOrRestoreIntrinsic ( Instruction * I )

inlinestatic

Definition at line 257 of file DependencyGraph.h.

References llvm::dyn_cast(), I, and II.

Referenced by isMemDepNodeCandidate().

◆ preds()

iterator_range< iterator > llvm::sandboxir::DGNode::preds ( DependencyGraph & DAG ) const

inline

\Returns a range of DAG predecessors nodes.

If this is a MemDGNode then this will also include the memory dependency predecessors. Please note that this can include the same node more than once, if for example it's both a use-def predecessor and a mem dep predecessor.

Definition at line 230 of file DependencyGraph.h.

References DependencyGraph, llvm::make_range(), preds_begin(), and preds_end().

◆ preds_begin() [1/2]

virtual iterator llvm::sandboxir::DGNode::preds_begin ( DependencyGraph & DAG )

inlinevirtual

Reimplemented in llvm::sandboxir::MemDGNode.

Definition at line 212 of file DependencyGraph.h.

References DependencyGraph, and I.

Referenced by preds(), and preds_begin().

◆ preds_begin() [2/2]

iterator llvm::sandboxir::DGNode::preds_begin ( DependencyGraph & DAG ) const

inline

Definition at line 220 of file DependencyGraph.h.

References DependencyGraph, DGNode(), and preds_begin().

◆ preds_end() [1/2]

virtual iterator llvm::sandboxir::DGNode::preds_end ( DependencyGraph & DAG )

inlinevirtual

Reimplemented in llvm::sandboxir::MemDGNode.

Definition at line 217 of file DependencyGraph.h.

References DependencyGraph, and I.

Referenced by preds(), and preds_end().

◆ preds_end() [2/2]

iterator llvm::sandboxir::DGNode::preds_end ( DependencyGraph & DAG ) const

inline

Definition at line 223 of file DependencyGraph.h.

References DependencyGraph, DGNode(), and preds_end().

◆ print()

void llvm::sandboxir::DGNode::print	(	raw_ostream &	OS,
		bool	PrintDeps = true ) const

virtual

Reimplemented in llvm::sandboxir::MemDGNode.

Definition at line 155 of file DependencyGraph.cpp.

References I, Scheduled, and UnscheduledDeps.

Referenced by dump(), and llvm::sandboxir::MemDGNode::print().

◆ ready()

bool llvm::sandboxir::DGNode::ready ( ) const

inline

\Returns true if all dependent successors (or predecessors during top-down scheduling) have been scheduled.

Definition at line 199 of file DependencyGraph.h.

References UnscheduledDeps.

◆ resetScheduleState()

void llvm::sandboxir::DGNode::resetScheduleState ( )

inline

Definition at line 193 of file DependencyGraph.h.

References Scheduled, and UnscheduledDeps.

◆ scheduled()

bool llvm::sandboxir::DGNode::scheduled ( ) const

inline

\Returns true if this node has been scheduled.

Definition at line 201 of file DependencyGraph.h.

References Scheduled.

◆ setSchedBundle()

void llvm::sandboxir::DGNode::setSchedBundle ( SchedBundle & SB )

protected

Definition at line 142 of file DependencyGraph.cpp.

References SB, and SchedBundle.

◆ setScheduled()

void llvm::sandboxir::DGNode::setScheduled ( )

inline

Definition at line 202 of file DependencyGraph.h.

References Scheduled, and UnscheduledDeps.

◆ succs()

iterator_range< succ_iterator > llvm::sandboxir::DGNode::succs ( DependencyGraph & DAG ) const

inline

\Returns a range of DAG successor nodes.

If this is a MemDGNode then this will also include the memory dependency successors. Please note that this can include the same node more than once, if for example it's both a use-def predecessor and a mem dep successor.

Definition at line 253 of file DependencyGraph.h.

References DependencyGraph, llvm::make_range(), succs_begin(), and succs_end().

◆ succs_begin() [1/2]

virtual succ_iterator llvm::sandboxir::DGNode::succs_begin ( DependencyGraph & DAG )

inlinevirtual

Reimplemented in llvm::sandboxir::MemDGNode.

Definition at line 235 of file DependencyGraph.h.

References DependencyGraph, and I.

Referenced by succs(), and succs_begin().

◆ succs_begin() [2/2]

succ_iterator llvm::sandboxir::DGNode::succs_begin ( DependencyGraph & DAG ) const

inline

Definition at line 243 of file DependencyGraph.h.

References DependencyGraph, DGNode(), and succs_begin().

◆ succs_end() [1/2]

virtual succ_iterator llvm::sandboxir::DGNode::succs_end ( DependencyGraph & DAG )

inlinevirtual

Reimplemented in llvm::sandboxir::MemDGNode.

Definition at line 240 of file DependencyGraph.h.

References DependencyGraph, and I.

Referenced by succs(), and succs_end().

◆ succs_end() [2/2]

succ_iterator llvm::sandboxir::DGNode::succs_end ( DependencyGraph & DAG ) const

inline

Definition at line 246 of file DependencyGraph.h.

References DependencyGraph, DGNode(), and succs_end().

◆ validUnscheduledDeps()

bool llvm::sandboxir::DGNode::validUnscheduledDeps ( ) const

inline

Returns: true if unscheduled successors(predecessors) contains valid data (for testing).

Definition at line 184 of file DependencyGraph.h.

References UnscheduledDeps.

◆ DependencyGraph

friend class DependencyGraph

friend

Definition at line 168 of file DependencyGraph.h.

References DependencyGraph.

Referenced by DependencyGraph, preds(), preds_begin(), preds_begin(), preds_end(), preds_end(), succs(), succs_begin(), succs_begin(), succs_end(), and succs_end().

◆ MemDGNode

friend class MemDGNode

friend

Definition at line 167 of file DependencyGraph.h.

References MemDGNode.

Referenced by MemDGNode.

◆ operator<<

raw_ostream & operator<<	(	raw_ostream &	OS,
		DGNode &	N )

friend

Definition at line 301 of file DependencyGraph.h.

References DGNode(), and N.

◆ SchedBundle

friend class SchedBundle

friend

Definition at line 164 of file DependencyGraph.h.

References SchedBundle.

Referenced by getSchedBundle(), SchedBundle, and setSchedBundle().

Member Data Documentation

◆ I

Instruction* llvm::sandboxir::DGNode::I

protected

◆ SB

SchedBundle* llvm::sandboxir::DGNode::SB = nullptr

protected

The scheduler bundle that this node belongs to.

Definition at line 160 of file DependencyGraph.h.

Referenced by getSchedBundle(), setSchedBundle(), and ~DGNode().

◆ Scheduled

bool llvm::sandboxir::DGNode::Scheduled = false

protected

This is true if this node has been scheduled.

Definition at line 158 of file DependencyGraph.h.

Referenced by llvm::sandboxir::MemDGNode::addMemPred(), print(), llvm::sandboxir::MemDGNode::removeMemPred(), resetScheduleState(), scheduled(), and setScheduled().

◆ SubclassID

DGNodeID llvm::sandboxir::DGNode::SubclassID

protected

For isa/dyn_cast etc.

Definition at line 152 of file DependencyGraph.h.

Referenced by DGNode(), and DGNode().

◆ UnscheduledDeps

std::optional<unsigned> llvm::sandboxir::DGNode::UnscheduledDeps = 0

protected

The number of unscheduled successors (predecessors) depending on the scheduling direction.

Optional represents whether the value is meaningless, e.g., after a node gets scheduled.

Definition at line 156 of file DependencyGraph.h.

Referenced by decrUnscheduledDeps(), getNumUnscheduledDeps(), incrUnscheduledDeps(), print(), ready(), resetScheduleState(), setScheduled(), and validUnscheduledDeps().

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

include/llvm/Transforms/Vectorize/SandboxVectorizer/DependencyGraph.h
lib/Transforms/Vectorize/SandboxVectorizer/DependencyGraph.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ iterator

◆ succ_iterator

Constructor & Destructor Documentation

◆ DGNode() [1/3]

◆ DGNode() [2/3]

◆ DGNode() [3/3]

◆ ~DGNode()

Member Function Documentation

◆ clearSchedBundle()

◆ comesBefore()

◆ decrUnscheduledDeps()

◆ dump()

◆ getInstruction()

◆ getNumUnscheduledDeps()

◆ getSchedBundle()

◆ incrUnscheduledDeps()

◆ isFenceLike()

◆ isMemDepCandidate()

◆ isMemDepNodeCandidate()

◆ isMemIntrinsic()

◆ isStackSaveOrRestoreIntrinsic()

◆ preds()

◆ preds_begin() [1/2]

◆ preds_begin() [2/2]

◆ preds_end() [1/2]

◆ preds_end() [2/2]

◆ print()

◆ ready()

◆ resetScheduleState()

◆ scheduled()

◆ setSchedBundle()

◆ setScheduled()

◆ succs()

◆ succs_begin() [1/2]

◆ succs_begin() [2/2]

◆ succs_end() [1/2]

◆ succs_end() [2/2]

◆ validUnscheduledDeps()

Friends And Related Symbol Documentation

◆ DependencyGraph

◆ MemDGNode

◆ operator<<

◆ SchedBundle

Member Data Documentation

◆ I

◆ SB

◆ Scheduled

◆ SubclassID

◆ UnscheduledDeps