LLVM  8.0.0svn
Public Member Functions | Static Public Member Functions | List of all members
llvm::VPRegionBlock Class Reference

VPRegionBlock represents a collection of VPBasicBlocks and VPRegionBlocks which form a Single-Entry-Single-Exit subgraph of the output IR CFG. More...

#include "Transforms/Vectorize/VPlan.h"

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Public Member Functions

 VPRegionBlock (VPBlockBase *Entry, VPBlockBase *Exit, const std::string &Name="", bool IsReplicator=false)
 
 VPRegionBlock (const std::string &Name="", bool IsReplicator=false)
 
 ~VPRegionBlock () override
 
const VPBlockBasegetEntry () const
 
VPBlockBasegetEntry ()
 
void setEntry (VPBlockBase *EntryBlock)
 Set EntryBlock as the entry VPBlockBase of this VPRegionBlock. More...
 
VPBlockBasefront () const
 
const VPBlockBasegetExit () const
 
VPBlockBasegetExit ()
 
void setExit (VPBlockBase *ExitBlock)
 Set ExitBlock as the exit VPBlockBase of this VPRegionBlock. More...
 
bool isReplicator () const
 An indicator whether this region is to generate multiple replicated instances of output IR corresponding to its VPBlockBases. More...
 
void execute (struct VPTransformState *State) override
 The method which generates the output IR instructions that correspond to this VPRegionBlock, thereby "executing" the VPlan. More...
 
- Public Member Functions inherited from llvm::VPBlockBase
virtual ~VPBlockBase ()=default
 
const std::string & getName () const
 
void setName (const Twine &newName)
 
unsigned getVPBlockID () const
 
VPRegionBlockgetParent ()
 
const VPRegionBlockgetParent () const
 
void setParent (VPRegionBlock *P)
 
const VPBasicBlockgetEntryBasicBlock () const
 
VPBasicBlockgetEntryBasicBlock ()
 
const VPBasicBlockgetExitBasicBlock () const
 
VPBasicBlockgetExitBasicBlock ()
 
const VPBlocksTygetSuccessors () const
 
VPBlocksTygetSuccessors ()
 
const VPBlocksTygetPredecessors () const
 
VPBlocksTygetPredecessors ()
 
VPBlockBasegetSingleSuccessor () const
 
VPBlockBasegetSinglePredecessor () const
 
size_t getNumSuccessors () const
 
size_t getNumPredecessors () const
 
VPBlockBasegetEnclosingBlockWithSuccessors ()
 An Enclosing Block of a block B is any block containing B, including B itself. More...
 
VPBlockBasegetEnclosingBlockWithPredecessors ()
 
const VPBlocksTygetHierarchicalSuccessors ()
 
VPBlockBasegetSingleHierarchicalSuccessor ()
 
const VPBlocksTygetHierarchicalPredecessors ()
 
VPBlockBasegetSingleHierarchicalPredecessor ()
 
VPValuegetCondBit ()
 
const VPValuegetCondBit () const
 
void setCondBit (VPValue *CV)
 
void setOneSuccessor (VPBlockBase *Successor)
 Set a given VPBlockBase Successor as the single successor of this VPBlockBase. More...
 
void setTwoSuccessors (VPBlockBase *IfTrue, VPBlockBase *IfFalse, VPValue *Condition)
 Set two given VPBlockBases IfTrue and IfFalse to be the two successors of this VPBlockBase. More...
 
void setPredecessors (ArrayRef< VPBlockBase *> NewPreds)
 Set each VPBasicBlock in NewPreds as predecessor of this VPBlockBase. More...
 
void printAsOperand (raw_ostream &OS, bool PrintType) const
 
void print (raw_ostream &OS) const
 
bool isLegalToHoistInto ()
 Return true if it is legal to hoist instructions into this block. More...
 

Static Public Member Functions

static bool classof (const VPBlockBase *V)
 Method to support type inquiry through isa, cast, and dyn_cast. More...
 
- Static Public Member Functions inherited from llvm::VPBlockBase
static void deleteCFG (VPBlockBase *Entry)
 Delete all blocks reachable from a given VPBlockBase, inclusive. More...
 

Additional Inherited Members

- Public Types inherited from llvm::VPBlockBase
using VPBlockTy = enum { VPBasicBlockSC, VPRegionBlockSC }
 An enumeration for keeping track of the concrete subclass of VPBlockBase that are actually instantiated. More...
 
using VPBlocksTy = SmallVectorImpl< VPBlockBase * >
 
- Protected Member Functions inherited from llvm::VPBlockBase
 VPBlockBase (const unsigned char SC, const std::string &N)
 

Detailed Description

VPRegionBlock represents a collection of VPBasicBlocks and VPRegionBlocks which form a Single-Entry-Single-Exit subgraph of the output IR CFG.

A VPRegionBlock may indicate that its contents are to be replicated several times. This is designed to support predicated scalarization, in which a scalar if-then code structure needs to be generated VF * UF times. Having this replication indicator helps to keep a single model for multiple candidate VF's. The actual replication takes place only once the desired VF and UF have been determined.

Definition at line 1014 of file VPlan.h.

Constructor & Destructor Documentation

◆ VPRegionBlock() [1/2]

llvm::VPRegionBlock::VPRegionBlock ( VPBlockBase Entry,
VPBlockBase Exit,
const std::string &  Name = "",
bool  IsReplicator = false 
)
inline

◆ VPRegionBlock() [2/2]

llvm::VPRegionBlock::VPRegionBlock ( const std::string &  Name = "",
bool  IsReplicator = false 
)
inline

Definition at line 1036 of file VPlan.h.

◆ ~VPRegionBlock()

llvm::VPRegionBlock::~VPRegionBlock ( )
inlineoverride

Definition at line 1040 of file VPlan.h.

Member Function Documentation

◆ classof()

static bool llvm::VPRegionBlock::classof ( const VPBlockBase V)
inlinestatic

Method to support type inquiry through isa, cast, and dyn_cast.

Definition at line 1046 of file VPlan.h.

References llvm::VPBlockBase::getVPBlockID().

◆ execute()

void VPRegionBlock::execute ( struct VPTransformState State)
overridevirtual

The method which generates the output IR instructions that correspond to this VPRegionBlock, thereby "executing" the VPlan.

Implements llvm::VPBlockBase.

Definition at line 231 of file VPlan.cpp.

References assert(), llvm::dbgs(), llvm::VPTransformState::Instance, LLVM_DEBUG, llvm::VPTransformState::UF, and llvm::VPTransformState::VF.

◆ front()

VPBlockBase& llvm::VPRegionBlock::front ( ) const
inline

Definition at line 1066 of file VPlan.h.

◆ getEntry() [1/2]

const VPBlockBase* llvm::VPRegionBlock::getEntry ( ) const
inline

◆ getEntry() [2/2]

VPBlockBase* llvm::VPRegionBlock::getEntry ( )
inline

Definition at line 1051 of file VPlan.h.

◆ getExit() [1/2]

const VPBlockBase* llvm::VPRegionBlock::getExit ( ) const
inline

◆ getExit() [2/2]

VPBlockBase* llvm::VPRegionBlock::getExit ( )
inline

Definition at line 1069 of file VPlan.h.

◆ isReplicator()

bool llvm::VPRegionBlock::isReplicator ( ) const
inline

An indicator whether this region is to generate multiple replicated instances of output IR corresponding to its VPBlockBases.

Definition at line 1082 of file VPlan.h.

Referenced by llvm::VPlan::execute().

◆ setEntry()

void llvm::VPRegionBlock::setEntry ( VPBlockBase EntryBlock)
inline

Set EntryBlock as the entry VPBlockBase of this VPRegionBlock.

EntryBlock must have no predecessors.

Definition at line 1055 of file VPlan.h.

References assert(), llvm::SmallVectorBase::empty(), llvm::VPBlockBase::getPredecessors(), and llvm::VPBlockBase::setParent().

◆ setExit()

void llvm::VPRegionBlock::setExit ( VPBlockBase ExitBlock)
inline

Set ExitBlock as the exit VPBlockBase of this VPRegionBlock.

ExitBlock must have no successors.

Definition at line 1073 of file VPlan.h.

References assert(), llvm::SmallVectorBase::empty(), llvm::VPBlockBase::getSuccessors(), and llvm::VPBlockBase::setParent().


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