Representation of the alloca slices. More...

Classes
class	partition_iterator
	An iterator over partitions of the alloca's slices. More...

class	SliceBuilder
	Builder for the alloca slices. More...

Public Member Functions
	AllocaSlices (const DataLayout &DL, AllocaInst &AI)
	Construct the slices of a particular alloca.

bool	isEscaped () const
	Test whether a pointer to the allocation escapes our analysis.

void	erase (iterator Start, iterator Stop)
	Erase a range of slices.

void	insert (ArrayRef< Slice > NewSlices)
	Insert new slices for this alloca.

iterator_range< partition_iterator >	partitions ()
	A forward range over the partitions of the alloca's slices.

ArrayRef< Instruction * >	getDeadUsers () const
	Access the dead users for this alloca.

ArrayRef< Use * >	getDeadUsesIfPromotable () const
	Access Uses that should be dropped if the alloca is promotable.

ArrayRef< Use * >	getDeadOperands () const
	Access the dead operands referring to this alloca.

void	print (raw_ostream &OS, const_iterator I, StringRef Indent=" ") const

void	printSlice (raw_ostream &OS, const_iterator I, StringRef Indent=" ") const

void	printUse (raw_ostream &OS, const_iterator I, StringRef Indent=" ") const

void	print (raw_ostream &OS) const

void	dump (const_iterator I) const

void	dump () const

Friends
class	AllocaSlices::SliceBuilder

using	iterator = SmallVectorImpl< Slice >::iterator
	Support for iterating over the slices.

using	range = iterator_range< iterator >

using	const_iterator = SmallVectorImpl< Slice >::const_iterator

using	const_range = iterator_range< const_iterator >

iterator	begin ()

iterator	end ()

const_iterator	begin () const

const_iterator	end () const

Detailed Description

Representation of the alloca slices.

This class represents the slices of an alloca which are formed by its various uses. If a pointer escapes, we can't fully build a representation for the slices used and we reflect that in this structure. The uses are stored, sorted by increasing beginning offset and with unsplittable slices starting at a particular offset before splittable slices.

Definition at line 442 of file SROA.cpp.

Member Typedef Documentation

◆ const_iterator

using llvm::sroa::AllocaSlices::const_iterator = SmallVectorImpl<Slice>::const_iterator

Definition at line 461 of file SROA.cpp.

◆ const_range

using llvm::sroa::AllocaSlices::const_range = iterator_range<const_iterator>

Definition at line 462 of file SROA.cpp.

◆ iterator

using llvm::sroa::AllocaSlices::iterator = SmallVectorImpl<Slice>::iterator

Support for iterating over the slices.

Definition at line 455 of file SROA.cpp.

◆ range

using llvm::sroa::AllocaSlices::range = iterator_range<iterator>

Definition at line 456 of file SROA.cpp.

Constructor & Destructor Documentation

◆ AllocaSlices()

AllocaSlices::AllocaSlices	(	const DataLayout &	DL,
		AllocaInst &	AI
	)

Construct the slices of a particular alloca.

Definition at line 1283 of file SROA.cpp.

References assert(), DL, llvm::erase_if(), llvm::detail::PtrUseVisitorBase::PtrInfo::getAbortingInst(), llvm::detail::PtrUseVisitorBase::PtrInfo::getEscapingInst(), llvm::detail::PtrUseVisitorBase::PtrInfo::isAborted(), llvm::detail::PtrUseVisitorBase::PtrInfo::isEscaped(), PB(), and llvm::stable_sort().

Member Function Documentation

◆ begin() [1/2]

iterator llvm::sroa::AllocaSlices::begin ( )

inline

Definition at line 458 of file SROA.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin().

Referenced by partitions(), print(), and printSlice().

◆ begin() [2/2]

const_iterator llvm::sroa::AllocaSlices::begin ( ) const

inline

Definition at line 464 of file SROA.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin().

◆ dump() [1/2]

LLVM_DUMP_METHOD void AllocaSlices::dump ( ) const

Definition at line 1344 of file SROA.cpp.

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

◆ dump() [2/2]

LLVM_DUMP_METHOD void AllocaSlices::dump ( const_iterator I ) const

Definition at line 1341 of file SROA.cpp.

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

◆ end() [1/2]

iterator llvm::sroa::AllocaSlices::end ( )

inline

Definition at line 459 of file SROA.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::end().

Referenced by partitions(), and print().

◆ end() [2/2]

const_iterator llvm::sroa::AllocaSlices::end ( ) const

inline

Definition at line 465 of file SROA.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::end().

◆ erase()

void llvm::sroa::AllocaSlices::erase	(	iterator	Start,
		iterator	Stop
	)

inline

Erase a range of slices.

Definition at line 469 of file SROA.cpp.

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

◆ getDeadOperands()

ArrayRef< Use * > llvm::sroa::AllocaSlices::getDeadOperands ( ) const

inline

Access the dead operands referring to this alloca.

These are operands which have cannot actually be used to refer to the alloca as they are outside its range and the user doesn't correct for that. These mostly consist of PHI node inputs and the like which we just need to replace with undef.

Definition at line 503 of file SROA.cpp.

◆ getDeadUsers()

ArrayRef< Instruction * > llvm::sroa::AllocaSlices::getDeadUsers ( ) const

inline

Access the dead users for this alloca.

Definition at line 490 of file SROA.cpp.

◆ getDeadUsesIfPromotable()

ArrayRef< Use * > llvm::sroa::AllocaSlices::getDeadUsesIfPromotable ( ) const

inline

Access Uses that should be dropped if the alloca is promotable.

Definition at line 493 of file SROA.cpp.

◆ insert()

void llvm::sroa::AllocaSlices::insert ( ArrayRef< Slice > NewSlices )

inline

Insert new slices for this alloca.

This moves the slices into the alloca's slices collection, and re-sorts everything so that the usual ordering properties of the alloca's slices hold.

Definition at line 476 of file SROA.cpp.

References llvm::SmallVectorImpl< T >::append(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::ArrayRef< T >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::ArrayRef< T >::end(), llvm::SmallVectorBase< Size_T >::size(), and llvm::sort().

◆ isEscaped()

bool llvm::sroa::AllocaSlices::isEscaped ( ) const

inline

Test whether a pointer to the allocation escapes our analysis.

If this is true, the slices are never fully built and should be ignored.

Definition at line 451 of file SROA.cpp.

◆ partitions()

iterator_range< AllocaSlices::partition_iterator > AllocaSlices::partitions ( )

A forward range over the partitions of the alloca's slices.

This accesses an iterator range over the partitions of the alloca's slices. It computes these partitions on the fly based on the overlapping offsets of the slices and the ability to split them. It will visit "empty" partitions to cover regions of the alloca only accessed via split slices.

Definition at line 832 of file SROA.cpp.

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

◆ print() [1/2]

void AllocaSlices::print ( raw_ostream & OS ) const

Definition at line 1328 of file SROA.cpp.

References begin(), E, end(), I, OS, and print().

◆ print() [2/2]

void AllocaSlices::print	(	raw_ostream &	OS,
		const_iterator	I,
		StringRef	Indent = `" "`
	)		const

Definition at line 1309 of file SROA.cpp.

References I, OS, printSlice(), and printUse().

Referenced by dump(), and print().

◆ printSlice()

void AllocaSlices::printSlice	(	raw_ostream &	OS,
		const_iterator	I,
		StringRef	Indent = `" "`
	)		const

Definition at line 1316 of file SROA.cpp.

References begin(), I, and OS.

Referenced by print(), and llvm::sroa::AllocaSliceRewriter::visit().

◆ printUse()

void AllocaSlices::printUse	(	raw_ostream &	OS,
		const_iterator	I,
		StringRef	Indent = `" "`
	)		const

Definition at line 1323 of file SROA.cpp.

References I, and OS.

Referenced by print().

Friends And Related Function Documentation

◆ AllocaSlices::SliceBuilder

friend class AllocaSlices::SliceBuilder

friend

Definition at line 520 of file SROA.cpp.

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

lib/Transforms/Scalar/SROA.cpp

Classes

Public Member Functions

Friends

Detailed Description

Member Typedef Documentation

◆ const_iterator

◆ const_range

◆ iterator

◆ range

Constructor & Destructor Documentation

◆ AllocaSlices()

Member Function Documentation

◆ begin() [1/2]

◆ begin() [2/2]

◆ dump() [1/2]

◆ dump() [2/2]

◆ end() [1/2]

◆ end() [2/2]

◆ erase()

◆ getDeadOperands()

◆ getDeadUsers()

◆ getDeadUsesIfPromotable()

◆ insert()

◆ isEscaped()

◆ partitions()

◆ print() [1/2]

◆ print() [2/2]

◆ printSlice()

◆ printUse()

Friends And Related Function Documentation

◆ AllocaSlices::SliceBuilder