llvm::sroa::Partition Class Reference

A partition of the slices. More...

Public Member Functions
uint64_t	beginOffset () const
	The start offset of this partition. More...
uint64_t	endOffset () const
	The end offset of this partition. More...
uint64_t	size () const
	The size of the partition. More...
bool	empty () const
	Test whether this partition contains no slices, and merely spans a region occupied by split slices. More...
ArrayRef< Slice * >	splitSliceTails () const
	Get the sequence of split slice tails. More...
Iterate slices that start within the partition.
These may be splittable or unsplittable. They have a begin offset >= the partition begin offset.
iterator	begin () const
iterator	end () const

Friends
class	AllocaSlices
class	AllocaSlices::partition_iterator

Detailed Description

A partition of the slices.

An ephemeral representation for a range of slices which can be viewed as a partition of the alloca. This range represents a span of the alloca's memory which cannot be split, and provides access to all of the slices overlapping some part of the partition.

Objects of this type are produced by traversing the alloca's slices, but are only ephemeral and not persistent.

Definition at line 363 of file SROA.cpp.

Member Function Documentation

begin()

iterator llvm::sroa::Partition::begin ( ) const

inline

Definition at line 416 of file SROA.cpp.

References SI.

Referenced by getTypePartition(), and isIntegerWideningViable().

beginOffset()

uint64_t llvm::sroa::Partition::beginOffset ( ) const

inline

The start offset of this partition.

All of the contained slices start at or after this offset.

Definition at line 388 of file SROA.cpp.

Referenced by getTypePartition(), and isVectorPromotionViableForSlice().

empty()

bool llvm::sroa::Partition::empty ( ) const

inline

Test whether this partition contains no slices, and merely spans a region occupied by split slices.

Definition at line 405 of file SROA.cpp.

end()

iterator llvm::sroa::Partition::end ( ) const

inline

Definition at line 417 of file SROA.cpp.

Referenced by getTypePartition(), and isIntegerWideningViable().

endOffset()

uint64_t llvm::sroa::Partition::endOffset ( ) const

inline

The end offset of this partition.

All of the contained slices end at or before this offset.

Definition at line 393 of file SROA.cpp.

Referenced by getTypePartition(), and isVectorPromotionViableForSlice().

size()

uint64_t llvm::sroa::Partition::size ( ) const

inline

The size of the partition.

Note that this can never be zero.

Definition at line 398 of file SROA.cpp.

References assert().

Referenced by getTypePartition().

splitSliceTails()

ArrayRef<Slice *> llvm::sroa::Partition::splitSliceTails ( ) const

inline

Get the sequence of split slice tails.

These tails are of slices which start before this partition but are split and overlap into the partition. We accumulate these while forming partitions.

Definition at line 425 of file SROA.cpp.

Referenced by getTypePartition().

Friends And Related Function Documentation

AllocaSlices

friend class AllocaSlices

friend

Definition at line 365 of file SROA.cpp.

AllocaSlices::partition_iterator

friend class AllocaSlices::partition_iterator

friend

Definition at line 366 of file SROA.cpp.

---

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

• lib/Transforms/Scalar/SROA.cpp