llvm::sandboxir::Region Class Reference

The main job of the Region is to point to new instructions generated by vectorization passes. More...

#include "llvm/SandboxIR/Region.h"

Public Types
using	iterator = decltype(Insts.begin())

Public Member Functions
	Region (Context &Ctx, TargetTransformInfo &TTI)
	~Region ()
Context &	getContext () const
void	add (Instruction *I)
	Adds I to the set.
void	remove (Instruction *I)
	Removes I from the set.
bool	contains (Instruction *I) const
	Returns true if I is in the Region.
bool	empty () const
	Returns true if the Region has no instructions.
iterator	begin ()
iterator	end ()
iterator_range< iterator >	insts ()
const ScoreBoard &	getScoreboard () const
	\Returns the ScoreBoard data structure that keeps track of instr costs.
bool	operator== (const Region &Other) const
	This is an expensive check, meant for testing.
bool	operator!= (const Region &other) const
void	dump (raw_ostream &OS) const
void	dump () const

Static Public Member Functions
static SmallVector< std::unique_ptr< Region > >	createRegionsFromMD (Function &F, TargetTransformInfo &TTI)

Friends
raw_ostream &	operator<< (raw_ostream &OS, const Region &Rgn)

Detailed Description

The main job of the Region is to point to new instructions generated by vectorization passes.

It is the unit that RegionPasses operate on with their runOnRegion() function.

The region allows us to stack transformations horizontally, meaning that each transformation operates on a single region and the resulting region is the input to the next transformation, as opposed to vertically, which is the common way of applying a transformation across the whole function. This enables us to check for profitability and decide whether we accept or rollback at a region granularity, which is much better than doing this at the function level.

Definition at line 91 of file Region.h.

Member Typedef Documentation

iterator

using llvm::sandboxir::Region::iterator = decltype(Insts.begin())

Definition at line 128 of file Region.h.

Constructor & Destructor Documentation

Region()

llvm::sandboxir::Region::Region	(	Context &	Ctx,
		TargetTransformInfo &	TTI
	)

Definition at line 35 of file Region.cpp.

References add(), llvm::MDString::get(), llvm::MDNode::getDistinct(), llvm::sandboxir::Context::LLVMCtx, llvm::sandboxir::Context::registerCreateInstrCallback(), llvm::sandboxir::Context::registerEraseInstrCallback(), and remove().

~Region()

llvm::sandboxir::Region::~Region

(

)

Definition at line 47 of file Region.cpp.

References llvm::sandboxir::Context::unregisterCreateInstrCallback(), and llvm::sandboxir::Context::unregisterEraseInstrCallback().

Member Function Documentation

add()

void llvm::sandboxir::Region::add

(

Instruction *

I

)

Adds I to the set.

Definition at line 52 of file Region.cpp.

References llvm::sandboxir::ScoreBoard::add(), and I.

Referenced by Region().

begin()

iterator llvm::sandboxir::Region::begin ( )

inline

Definition at line 129 of file Region.h.

References llvm::SetVector< T, Vector, Set, N >::begin().

Referenced by insts().

contains()

bool llvm::sandboxir::Region::contains ( Instruction *  I ) const

inline

Returns true if I is in the Region.

Definition at line 124 of file Region.h.

References llvm::SetVector< T, Vector, Set, N >::contains(), and I.

Referenced by llvm::sandboxir::ScoreBoard::remove().

createRegionsFromMD()

SmallVector< std::unique_ptr< Region > > llvm::sandboxir::Region::createRegionsFromMD ( Function &  F, TargetTransformInfo &  TTI  )

static

Definition at line 90 of file Region.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), F, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::sandboxir::RegionsFromMetadata::runOnFunction().

dump() [1/2]

void llvm::sandboxir::Region::dump

(

)

const

Definition at line 83 of file Region.cpp.

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

Referenced by dump().

dump() [2/2]

void llvm::sandboxir::Region::dump

(

raw_ostream &

OS

)

const

Definition at line 78 of file Region.cpp.

References I, and OS.

empty()

bool llvm::sandboxir::Region::empty ( ) const

inline

Returns true if the Region has no instructions.

Definition at line 126 of file Region.h.

References llvm::SetVector< T, Vector, Set, N >::empty().

end()

iterator llvm::sandboxir::Region::end ( )

inline

Definition at line 130 of file Region.h.

References llvm::SetVector< T, Vector, Set, N >::end().

Referenced by insts().

getContext()

Context & llvm::sandboxir::Region::getContext ( ) const

inline

Definition at line 117 of file Region.h.

getScoreboard()

const ScoreBoard & llvm::sandboxir::Region::getScoreboard ( ) const

inline

\Returns the ScoreBoard data structure that keeps track of instr costs.

Definition at line 136 of file Region.h.

insts()

iterator_range< iterator > llvm::sandboxir::Region::insts ( )

inline

Definition at line 131 of file Region.h.

References begin(), end(), and llvm::make_range().

operator!=()

bool llvm::sandboxir::Region::operator!= ( const Region &  other ) const

inline

Definition at line 141 of file Region.h.

operator==()

bool llvm::sandboxir::Region::operator==

(

const Region &

Other

)

const

This is an expensive check, meant for testing.

Definition at line 70 of file Region.cpp.

References llvm::Other.

remove()

void llvm::sandboxir::Region::remove

(

Instruction *

I

)

Removes I from the set.

Definition at line 60 of file Region.cpp.

References I, and llvm::sandboxir::ScoreBoard::remove().

Referenced by Region().

Friends And Related Function Documentation

operator<<

raw_ostream & operator<< ( raw_ostream &  OS, const Region &  Rgn  )

friend

Definition at line 145 of file Region.h.

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

• include/llvm/SandboxIR/Region.h
• lib/SandboxIR/Region.cpp